Home

Owners - Walker Mowers

1. 41 42 Maintenance Instructions IMPORTANT TIPS FOR CARE OF THE YANMAR ENGINE Fuel System e Fuel must be clean free from water dirt and or ganic material Fuel contamination will greatly short en the life of the fuel injector pump and injectors e Use of B5 Bio Diesel fuel is approved when pur chased from recognized and authorized diesel fuel supplier e Engine is equipped with a mechanical fuel pump and the fuel system will need to be primed in certain conditions after running out of fuel or after fuel sys tem maintenance Move priming lever on fuel pump until the clear cup on the fuel filter water separator shows filled with fuel before attempting to crank the engine e DONOT crank the engine to prime the fuel system as this may damage the starter from prolonged cranking e DO NOT open the air vent valve or loosen fuel lines on the injector pump to bleed the fuel system The fuel filter has an internal air bleed port connected to the fuel return line to the fuel tank Starting Stopping e DONOT use ether or any starting fluid in the air intake This will damage the engine e Toaid starting in cold weather below 40 F 4 C release the hydrostatic transmission drive belt to re duce the engine starter cranking load Reinstall belt after the engine has been warmed up e Start the engine with the throttle advanced off idle to a mid point 1 4 to 1 2 throttle setting This will aid starti
2. Deck Caster Wheels Installation Deck Discharge Shield Installation PTO Shaft Guard Installation Tilt Up Roller Wheel Installation Mower Deck Installation on Tractor Deck Installation Deck Leveling PREOPERATING CHECKLIST Operating Instructions CONTROL IDENTIFICATION LOCATION AND FUNCTION Ignition Switch Engine Throttle Body Latch Forward Speed Control FSC Fuel Pump Priming Steering Levers Blade Clutch PTO Parking Brake Circuit Breakers Glow Plug Warning Light Battery Charge Light Oil Pressure Warning Light Water Temperature Warning Light Transaxle Lockout Rods Hourmeter Optional Roll Over Protection System ROPS Operating Controls STARTING THE ENGINE ADJUSTING GROUND SPEED AND STEERING ENGAGING THE MOWER STOPPING THE MACHINE FUEL SELECTOR VALVE ADJUSTING CUTTING HEIGHT Transport Position TRANSAXLE LOCKOUTS RECOMMENDATIONS FOR MOWING RECOMMENDATIONS FOR TILT UP DECK OPERATION TRANSPORT Maintenance Instructions MAINTENANCE SCHEDULE CHART IMPORTANT TIPS FOR CARE OF THE YANMAR ENGINE Fuel System Starting Stopping Cooling System Air Cleaner System Cil LUBRICATION Engine Oil Engine Break In Oil Checking Engine Crankcase Oil Level Changing Engine Crankcase Oil Oil Filter __ Mower Deck Spindle Lubrication DRD52 DSD60 Mower Deck Lubrication _ Transaxle Lubrication Grease Fi
3. Discharge Shield Side Discharge Shield in Lowest Position e When operating on a slope reduce speed and use caution to start stop and maneuver Avoid sharp turns or sudden changes in direction The maximum recommended side slope operating angle is 15 degrees or 26 grade Maximum Recommended A Side Slope Do Not Operate on Steep Slopes Maximum Recommended Side Slope 39 Operating Instructions RECOMMENDATIONS FOR TILT UP DECK OPERATION TRANSPORT To avoid potential deck and or tractor damage while Do not mow or drive the tractor within using the tilt up deck the following recommenda 5 feet 1 5 meters of an embankment or tions are offered retaining wall with drop off e Donotmove the tractor with the deckin the tilt up position since both the roller wheels on the back of the deck may be damaged by moving the tractor The tilt up configuration should only be used when the tractor is parked e Thetractor body should never be tilted forward with the deck in the tilt up position This can cause the deck to unhook from the tractor and fall with con siderable force potentially causing deck or tractor damage and or bodily injury e When transporting a tractor with the deck in the tilt up position on a truck ortrailer the deck should be secured to the vehicle with a strap or rope stop vertical movement This will prevent the deck from bouncing on the rear roller wheels causing break age This
4. Clutch Link Ball Joint 1 4 in to 5 16 in 6 35 mm to 7 94 mm Compressed Front of Mower gt Clutch Arm ADJUSTMENTS Adjust the length of the clutch link to achieve a bolt head clearance of 1 4 in to 5 16 in 6 35 mm to 7 94 mm with the clutch engaged To adjust length remove ball joint from clutch arm shorten the clutch link to increase this measurement or lengthen the clutch link to decrease this measurement If adjust ments are needed more frequently than every 100 hours to maintain dimensions it may suggest prob lems with pulley wear or belt misalignment Blade Clutch Engaged Clutch Engagement Blade Clutch Idler Pulley PTO Clutch Engaged Maintenance Instructions Clutch Disengagement Brake Action Itis important to check and maintain blade brake action for safe operation of the ma chine The declutched or disengaged position of the blade clutch idler pulley is adjustable and is set to give belt release without excessive slack and to apply the blade brake The blade brake is activated by the brake band connected to the clutch engage ment arm The brake is designed to stop the blades within five 5 seconds after disengaging the clutch Knuckle Joint 2 5 16 in 58 74 mm PE 5 7 8 in 149 23 mm _ Spring Uncompressed Clutch Engagement Arm NOTE These measurements are the pres
5. amp Aig 5 THROTTLE Engaged Engaged Position Position Disengaged Position PARKING BRAKE BLADE CLUTCH PTO Disengaged Position Operating Controls Top View from Drivers Point of View Operating Instructions STARTING THE ENGINE Before operating the mower read and un derstand all Safety Instructions and Operat ing Instructions NEVER run the engine in an enclosed or poorly ventilated area Engine exhaust contains carbon monoxide an odorless and deadly gas Before attempting to start the engine make sure the operator is in the seat the Forward Speed Control is in NEUTRAL PARK position and the blade clutch and parking brake are DISEN GAGED NOTE Release parking brake to prevent extra load on the starter if the transmission neutral is slightly out of adjustment A safety interlock switch system PRE VENTS CRANKING the engine with either the Forward Speed Control or the blade clutch PTO out of neutral If the engine cranks otherwise the safety system is not working and should be repaired or adjust ed before operating the mower DO NOT disconnect safety switches they are for the operator s protection Turn and hold the ignition key in the PREHEAT position to preheat the engine glow plugs For temperatures below 35 F 2 C the time r
6. Remember for an emergency stop the forward motion of the tractor can always be stopped by pulling the Forward Speed Control FSC into the NEUTRAL PARK position In case the transmission drive belt breaks during operation and if the machine is on a slope the machine will freewheel down the slope To main tain control immediately 1 Release the steer ing levers and simultaneously 2 Move the FSC tothe NEUTRAL PARK position When the ma chine is stopped or moving slowly engage the parking brake NOTE This is exactly the same procedure used to normally stop and park the machine Disengage the blade clutch and put the FSC in the NEUTRAL PARK position before starting the engine an ignition interlock switch normally prevents starting ofthe machine if these controls are in the OPERATING position Do not operate machine if the operator pres ence safety switch system is not working Verify proper operation by having the operator lift off the seat with the engine running and moving two controls one at a time 1 Move the FSC lever out of the NEUTRAL PARK position and 2 Engage the PTO Clutch Moving either con trol should stop the engine after a 1 2 second delay Do not run the engine in a confined area with out adequate ventilation Exhaust fumes are hazardous and can be deadly Do not carry passengers maximum seating capacity is one 1 person Watch for holes rocks and roots in the terrain andfor other
7. Safety Instructions Maintenance Topreventaccidental starting ofthe engine when servicing or adjusting the machine remove the key from the ignition switch To reduce fire hazards keep the engine free of grass leaves excessive grease and dirt Keep all nuts bolts and screws tight to ensure the machine is in a safe working condition Check the blade mounting bolts frequently mak ing sure they are tight Perform only maintenance instructions de scribed in this manual Unauthorized mainte nance operations or machine modifications may result in unsafe operating conditions If the engine must be running to perform a main tenance adjustment keep hands feet and cloth ing away from moving parts Do not wear jew elry or loose clothing Always use the proper engine service manual when working on the engine Unauthorized maintenance operations or modifications to the engine may resultin unsafe operating conditions The fuel oil injection system operates under high pressure and can penetrate the skin and result in serious injury Unqualified persons should not remove or attempt to adjust a pump injector nozzle or any part of the fuel injection system Altering the equipment or engine in any manner which adversely affects its operation perfor mance durability or use will VOID the warranty and may cause hazardous conditions Never attempt to disconnect any safety devices or defeat the purpose of these safety devi
8. rotating mower blades are a cutting dismemberment hazard to hands and feet Keep all body parts away from rotating mow er blades Donot step on end of deck Warning thrown object hazard Keep bystanders away from the machine when operating Clear lawn of debris before operating e Keep any discharge deflector in place and in the lowest position A 8600 14 Location Deck Carrier Frame Part Number 8600 14 1 Warning do not operate the machine with the deck tilted up Location Chassis Member Behind Transaxles Part Number 9804 1 1 Neutral Lock Lift and move into slot to unlock transmis sion and allow machine to freewheel Location Engine Part Number 8600 12 1 Warning carbon monoxide CO poisoning hazard CO emitted by a running engine can be deadly Donotoperate indoors or in other enclosed areas Location Deck Carrier Frame Part Number 8600 15 1 Warning lock deck tilt up hinge before operat ing the machine Location PTO Guard on Deck Part Number 8746 2 1 Grease PTO shaft joints every 8 hours Location Rear Body Near Muffler Part Number 8600 5 1 Warning hot surface do not touch Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the
9. 30 Operating Instructions Transaxle Lockout Rods The transaxle lockout rods disengage the transax les By lifting the rods up and locking them into place with the shoulder on the rod in the chassis notch the transaxles are released to permit free wheeling By releasing the rods and recessing them back toward the chassis the transaxles are engaged for normal operation The transaxle rods in the LOCKOUT position are used to enable moving the machine without the engine running e g for service Referto TRANSAXLE LOCKOUTS in this section for operating instructions NOTE The transaxle lockout rods ends should be completely retracted against the chassis otherwise operation of the transaxle may be erratic Hydro Lockout Rod Location Hourmeter The hourmeter which is located on the right front of the body displays operating time accumulated while the ignition switch is in the ON position The hourmeter provides maintenance reminders af ter certain hours of operation The hourmeter screen will start flashing the reminder one hour prior to the recommended interval and will continue until one hour after the recommended interval two hours The hourmeter does not have a manual reset function Procedure Interval Reminder Oil Change Break In Lubricate and Check 24 26 Hours LUBE Levels Oil Change 49 51 Hours nu These intervals reflect the actual time that the reminder will flash one hour prior to and one
10. 69 70 Maintenance Instructions 6 T With the FSC in NEUTRAL PARK start the en gine Operate first at idle and then normal op erating speed and check for movement of drive wheels NOTE If the engine will not start check and adjust the neutral safety switch refer to Step 6 FSC Switch Neutral Adjustment With the FSC in the NEUTRAL PARK position and the engine running the wheels should not move If a drive tire is moving the Control Rod on that side is out of adjustment Adjust that side to achieve neutral Now both transaxles are in the neutral window Control Rods Neutral Window Front Body Hidden for Clarity One at a time adjust the left and right Control Rods to find the center of the neutral window Shorten the rods until the drive tire turns forward then lengthen it until the drive tire turns in reverse approximately 1 turn Position the rods halfway between forward and reverse Lower drive tires onto ground Step 4 Full Forward Speed Adjustment 1 Move the FSC to the full FORWARD speed posi tion Raise the body The set screws in the left and right Transmission Control Arms should not be contacting the locating stud in the transaxle If they are backthe set screws out until they do not touch ADJUSTMENTS Maximum Speed Tracking Adjustment T Handle _ Hex Wrench Transmission Control Arm Maximum Speed Tracking Adjustment Shown with Parts Removed for Clarity S
11. NM PY PB Grease every eight 8 hours Refer to Engine Oil located on page 43 LUBRICATION Maintenance Instructions n iR iss inn TWAS NAY 9 7 SS Ay Chassis and Deck Lubrication Points 47 48 Maintenance Instructions Transaxle Oil and Filter Change Change the transaxle oil after the initial break in pe riod of 75 100 hours Thereafter chan
12. Secure wire above tab PTO Guard PTO Belt Belt Guards Closed Engine Hidden for Clarity 61 62 Maintenance Instructions REPLACING REPAIRING Ground Drive Belt 1 To remove the ground drive belt Raisethe spring loaded idler to relax belt a Remove belt tensioner stop wing nut Slide belt off pulleys then release the idler Tension Remove Belt Tensioner Ground Drive Spring Stop Wing Nut Belt RH Transaxle D LH Transaxle Drive Pulley Idler Pulley Hydro Idler Arm Raise Idler Pulley to Relax Belt Ground Drive Belt Assembly Disengaged 2 a Reverse the procedure to install the ground b Make sure the belt tensioner stop bolt and drive belt assembly is in place as shown Adjust Belt Tensioner Stop by tightening wing nut until it touches the washer then back off one 1 turn Ground Drive Adjust Belt LH Transaxle Belt Tensioner Stop RH Transaxle e 9 b 3 e Drive Pulley Idler Pulley Hydro Idler Arm Ground Drive Belt Assembly Engaged Maintenance Instructions REPLACING REPAIRING Alternator Belt Remove the flex coupling center section 1 Toremove the engine alternator belt P N 2351 4 by removing the six 6 rubber iso couplers 12 bolts flat washers star a Remove the flex coupling guard 5 bolts lock washers Flex Coupling Guard Flex Coupling Center Section Engine Alternator Belt Lock Washer Rubber Iso Coupler Star Lock Washe
13. to 3 4 in 16 mm to 19 mm from engaged to disengaged NOTE As blade brake band drum wears pul ley travel will increase and it will be necessary to adjust the blade brake band nut to maintain these dimensions TCH DISENGAGED TCH ENGAGED P ie et CE Clutch Idler Pulley Travel Adjustment ADJUSTMENTS Blade Brake Band Adjustment Nut Chassis Mount Ref Blade Brake Band Adjustment After adjustments are complete check blade brake action as described in CHECKING SER VICING the Blade Brake Action in this section If blades do not stop within five 5 seconds check the following a Make sure clutch and brake linkage are working freely no binding Check the brake band lining for wear Check the brake drum on the pulley If ex cessive wear is present it will be necessary to replace worn parts LIMITED WARRANTY FOR WALKER MODEL MBSY RIDER MOWER WHAT THIS WARRANTY COVERS AND FOR HOW LONG Walker Manufacturing company will at its option repair or replace without charge any part covered by this warranty which is found to be defective in material and or workmanship within one 1 year after date of sale to the original retail purchaser unless the product is used for rental purposes in which case this warranty is limited to ninety 90 days At Walker s req
14. 2 in 6 to 13 mm above the plates Tire Pressure Inflate tires to pressures shown below Deck Caster Wheel 20 PSI 137 kPa Drive 15PSI 103 kPa Rear 20PSI 137 kPa Wheel Nuts Torque Check the eight 8 Drive Tire mounting nuts Every 100 hours they should each be torqued to 75 to 85 ft lbs 102 to 115 N m Maintenance Instructions Sharpen Mower Blades Check mower blade s for straightness sharp ness condition ofthe cutting edge and balance every 10 hours of operation or more often when mowing abrasive type grass or operating on sandy soils Replace blades if worn bent cracked or otherwise damaged refer to REPLACING RE PAIRING the Mower Blades in this section Usethe following procedure to check and sharpen blades NOTE Keep blades sharp cutting with dull blades not only yields a poor mowing job but slows the cut ting speed of the mower and causes extra wear on the engine and blade drive by pulling hard 1 Stop the engine remove ignition key and dis connectthe electrical plug on the fuel shut off solenoid before raising the mower deck to ser vice blades Raise the deck and secure it in the TILT UP position refer to Deck Secured in Tilt Up Posi tion photo in CLEANING of Grass Buildup in Mower Housing in this section NEVER operate cutter blades with the deck in the raised position NOTE shaft must be disconnected before checking blades for straightness Check the bla
15. Alternator Belt Tension 55 56 Maintenance Instructions Security of Air Filtration Components NOTE The following inspection is only an external inspection and should be done without disturb ing the filtration components On a daily basis visually inspect the external condi tion ofthe complete air cleaner system Thefollowing items should be inspected 1 Check the Enginaire air cleaner canister for damage Make sure the cover is in place and the cover latch is secure do not run the engine with out the air cleaner cover in place and secure Inspectthe air intake hose for cracks nicks cuts etc and check the hose clamps for tightness Checkto make sure the airfilter restriction gauge is in place and tight Battery NOTE For initial battery service during setup refer to Battery Service in Assembly Instructions IMPORTANT Make sure battery is securely mount ed in the frame Aloose battery may cause damage to the case resulting in acid leakage and severe dam age to the machine A hazard may be created by damage to critical working parts and safety systems Electrolyte Level The battery electrolyte level should be checked after every 25 hours of operation To check electrolyte level 1 Remove battery cell filler caps 2 Checkthe electrolyte level If the level is below the bottom ofthe vent well fill with drinking water to the bottom of the vent wells 1 4 to 1 2 in 6 to 13 mm above the
16. Dipstick View from Above Right Side of Tractor LUBRICATION Oil Drain Plug Oil Drain Plug Location View from Underneath Mower Apply a thin coating of new oil to the rubber gas ket on the replacement oil filter IMPORTANT Use ONLY oil filters from the engine manufacturer Aftermarket oil filters may notseal properly and or may not have the correct pressure relief valve for proper lubrication Install the new oil filter on the engine Turn the oil filter clockwise until the rubber gasketcontacts the sealing surface then tighten the filter an ad ditional 1 2 to 3 4 turn Reinstall the drain plug Fill the crankcase with new clean oil Use only crankcase lubricants recommended by the engine manufacturer Refer to Specifications in this manual or the engine owner s manual Use the recommended oil viscosity for the expected ambient temperature Oil with the correct viscosity will aid starting in cold weather and assure proper lubrication in hot weather Fill to FULL mark on the dipstick crankcase capacity is 3 1 quarts 2 9 liters when changing oil and filter IMPORTANT Checkthe dipstick reading before pouring in the last 1 2 pint of oil and fill only to the FULL mark The oil level should never be over the FULL mark on the dipstick overfilling can result in engine overheating and loss of power Start the engine and check for oil leaks around the oil filter Stop the engine recheck the oil lev el and a
17. THERE IS NO OTHER EXPRESS WARRANTY ANY WARRANTY THAT MAY BE IMPLIED FROM THIS PURCHASE INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE DURATION OF THIS WARRANTY AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you WALKER WILL NOT BE LIABLE FOR ANY INCIDENTAL CONSEQUENTIAL OR SPECIAL DAMAGES AND OR EXPENSES IN CONNECTION WITH THE PURCHASE OR USE OF THE MOWER Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation s or exclusion s may not apply to you Only the warranty expressed in this limited warranty shall apply and no dealer distributor or individual is authorized to amend modify or extend this warranty in any way Accordingly additional statements such as dealer advertising or presentations whether oral or written do not constitute warranties by Walker and should not be relied upon This warranty gives you specific legal rights and you may also have other rights which vary from state to state 75 WALKERT Z2MOWERS WALKER MFG CO e 5925 E HARMONY ROAD FORT COLLINS CO 80528 e 970 221 5614 FORM NO 052311 PRINTED IN USA www walkermowers com 2012 WALKER MFG CO
18. be 200 to 250 Ib 90 7 to 113 4 kg this adjustment is preset at the factory If required the spring tension can be adjusted by tightening or loosen ing the elastic stop nuts located underneath the lower spring hook or contact your local dealer if additional help is required Refer to Deck Coun terweight Spring Installation photo el Lynch Pins Counterweight Springs Clip Support Arms Onto Body With Not Visible Body Tilted Up lt y Spring Tension Adjustment Nut Located Under Lower 4 Spring Hook Not Visible Deck Counterweight Spring Installation Assembly Instructions Deck Leveling 1 Position mower on a smooth level surface Set the cutting height to the highest position 5 in 127 mm for easy access under the deck to measure blade height Refer to ADJUSTING CUTTING HEIGHT in Operating Instructions NOTE Ablock of wood cut 5 in 127 mm high is a convenient gauge to measure blade height above ground during the leveling process The machine must be shut off during this procedure Height Adjustment Should not vary more than 1 8 in 3 mm side to side Front Rod End Use front clevis to raise or lower for front to rear level 5 in 127 mm Wood Block Deck Leveling Checkthe side to side level Rotate the outside blades sideways and measure the distance from blade tip to ground on each side If measurements vary more than 1 8 in 3 mm adjust the height adjustment rod on the
19. caster wheel e Charge the battery in a well ventilated Install wheel on fork using bolts and washers area so that gases produced while charg ing can dissipate NOTE Valve stem and grease zerk should face to the inside of machine e Keepsparks flames and smoking mate rials away from the battery at all times Tighten the bolts and washers e Make surethe battery cap vents are open after the battery is filled with acid check manifold vent on each cap e Make sure the battery charger is un plugged before connecting or disconnect ing cables to the battery Charge the battery at 15 amps for 10 minutes DO NOT exceed 20 amps maximum recom mended charging rate Charge until specific gravity is at least 1 250 Total charging time should not exceed one 1 hour Deck Caster Wheel Installation After charging the battery adjust the electrolyte hield Installation DSD level to the bottom of the vent wells 1 4 to 1 2 in 6to 13 mm above the plates Attach the deck side discharge shield by positioning IMPORTANT DO NOT overfill the battery the shield hinge lug in front of the deck mount and Electrolyte will overflow through the vented fastening with two 2 3 8 16 x 1 1 4 in bolts 3 8 16 ESNA nuts 3 8 in wave spring washers The caps onto parts of the machine and WILL result S in severe corrosion wave washers fit between the two hinging surfaces Tighten the nuts until the shield moves
20. high side to level the deck Check the front to rear level Rotate the center blade to point forward Measure the distance from blade tip to ground on the front and rear The rear of the blade should be 1 16 to 1 8 in 2 to 3 mm higher than the front of the blade remove the chain from the deck height adjuster clevis and adjust equally to achieve at least 1 16 in 2 mm difference Reinstall chains NOTE The mower deck and support frame are jig welded within normal tolerances very little if any adjustments should be required to level the deck Tire pressure will influence the level ness of the deck Check the tire pressure as a possible cause of the deck not being level Should be 1 16 in 2 mm to 1 8 in 3 mm higher atthe rear of the blade Rear Rod End 5 in 127 mm Wood Block Use front clevis to raise or lower for front to rear level 23 24 Assembly Instructions PREOPERATING CHECKLIST Before operating the mower for the first time and as a routine before daily operations it is important to make sure the mower is properly prepared and ready for operation The following is a list of items to be checked For a mower with frequent operation some ofthese items will notneedto be checked every day butthe operator should be aware ofthe condition of each For proper fuel and lubricants refer to Specifications FILL FUEL TANK Fill the fuel tank with clean fresh fuel Clean diesel fuel is part
21. important to find a local authorized servicing agent of the com ponent manufacturer Any unauthorized work done on these components during the warranty pe riod may void the warranty If you have any difficulty finding an authorized outlet or obtaining warranty service please contact our Service Department for assistance Walker Manufacturing Company 5925 E Harmony Road Fort Collins CO 80528 1 970 221 5614 Service manuals are available for each ofthese com ponents from their respective manufacturers as fol lows Yanmar Engines Yanmar America Corporation 101 International Parkway Adairsville GA 30103 770 877 9894 www yanmar com Mower Deck Serial Number Location Transaxles Hydro Gear 1411 South Hamilton St ENGINE SERIAL NUMBER LOCATION Sullivan IL 61951 Refer to the engine manual that accompanies this manual or the diagram below for the location of the engine serial number Serial Number Engine Serial Number Location Specifications MODEL ENGINE Manufacturer Model Displacement Max Power HP kW Governed RPM Max Torque ft lb N m Idle RPM Crankcase Capacity Crankcase Lubricant Oil Filter Fuel Tank Capacity Fuel Cooling System Capacity Cooling Fan Coolant Air Cleaner ELECTRICAL SYSTEM Battery Charging System Charging Output System Polarity Ignition Starter Interlock Switches Circuit Breaker s TRANSMISSION Manufacturer Model Steering Forward Speed Control Service Bra
22. installation Maintenance Instructions CLEANING Engine Cooling System Radial Sealing Radiator Screen and Cooling Fins Surface To prevent the engine from overheating and possible engine damage clean grass clippings chaff and dirt from the fine mesh radiator intake screen daily In certain mowing conditions dry grass leaves tree cotton etc it may be necessary to check and clean the screen several times during use to prevent engine overheating Enginaire Slide screen out from underside of radiator To Filter Element Safety Filter clean the screen wash with soapy water or blow 1 out with compressed air Air Filter Element Replacement 10 Install the Enginaire air cleaner cover Latch the two 2 cover latches Radiator Screen Inspect the radiator cooling fins for material lodged in this area which would restrict cooling airflow Use pressurized air or water to clean DO NOT use any tool like a screwdriver or knife to clean material out of the fins as this may damage the cooling fins DO NOT use cold water on a hot radiator Proper Orientation of Air Cleaner Cover NOTE Directing pressurized air or water from the fan side of the radiator outward is recom Checkthe air intake hose for cuts nicks cracks mended to dislodge material packed on the out Pie cade Nose ctampsstoptghmpes side of the cooling fins DO NOT use cold water Reset the air filter restriction gauge press button on a
23. km h Reverse m p h km h BLADE DRIVE PTO Shaft Blade Spindle Blade Drive Clutch and Brake TIRE SIZE Deck Caster Wheel Drive Rear TIRE PRESSURE Deck Caster Wheel Drive Rear DIMENSIONS Tractor and Mower Length Tractor Only Wheel Base Tractor With DRD52 With DSD60 Tractor w Tilted Deck Width With DRD52 With DSD60 Deflector Up Tread Width Height Standard Tractor With ROPS Optional With ROPS Optional Lowered 20W 50 Multi Viscosity Motor Oil Minimum SL Grade Oil 79 fl oz 2336 ml Cooling Fan Mounted on Drive Pulley P N 52114 Walker 2026 6 0 10 0 16 Infinitely Variable 0 5 0 8 Infinitely Variable Sliding Spline Shaft with Two 2 High Speed U Joints Each Blade 3 Mounts Directly on Belt Driven Spindles Manual Belt Tightener Clutch and Band Brake Stops Blades within Five 5 Seconds of Disengagement 13 x 5 00 6 Pneumatic 4 Ply 22 x 10 50 12 4 Ply Low Profile 13 x 5 00 6 4 Ply 20 PSI 137 kPa 15 PSI 103 kPa 20 PSI 137 kPa 68 1 2 in 174 cm 44 7 8 in 114 cm 105 1 2 in 267 cm 107 in 272 cm 83 1 2 in 212 cm 54 1 4 in 138 cm 64 in 163 cm 36 1 2 in 93 cm 46 3 4 in 119 cm 66 5 8 in 169 cm 51 1 2 in 131 cm Specifications MODEL CURB WEIGHT No Fuel Tractor Only Tractor with DRD52 Deck Tractor with DSD60 Deck DRIVE BELTS Engine PTO Ground Drive SEAT FRAME BODY CONSTRUCTION Frame Body Deck DECK T
24. lock needs to be ad justed Refer to ADJUSTMENTS for Step 7 Forward Speed Control Friction Adjustment in the Maintenance Instructions Asafety interlock switch seat switch will cause the engine to stop if the FSC is out of the NEUTRAL PARK position and the operator is not in the seat The function of this switch should be checked by the op erator raising off the seat with the tractor moving forward allow a 1 2 second off the seatfor the time delay function the engine should stop If the safety system is not working it should be repaired or replaced before operating the mower DO NOT disconnect the safety switches they are for the operator s protection Steer by pulling the lever on the side of desired direction of turn e g pull the LH lever to turn left To minimize the possibility of overcontrol use only one hand on both steering levers Operating Instructions Pull Steering Levers with Left Hand Keep Feet on Footrest when Moving Forward Speed Control FSC Correct Operator Hand Position on the Controls 3 Reverse direction of the mower by pulling both levers backward NOTE Smooth action on the steering levers will produce smooth mower operation Rememberto keep the engine and ground speed slow until learning the control response The FSC may be adjusted forward for faster ground speed and backward for slower ground speed When mowing ground speed should be adjusted to match the load
25. machine into operation The Decal Part Number is listed below and in the Parts Manual BELT ROUTING DRD52 BELT P N 2731 2 DSD60 BELT P N 2731 3 Location Deck Housing Under Footrest Part Number 2749 3 1 Deck drive belt routing Location Deck Discharge Shield DSD60 Part Number 5848 2 1 Warning thrown object hazard Always keep the discharge shield in the low est position when operating Donotremove the discharge shield Location Adjacent to Right Fuel Tank Part Number 2010 17 1 Fueltank selector fuel shut off valve GLOW PLUGS NOT CHARGING OIL PRESSURE WATER TEMP Location Front of Body on Right Side Part Number 2807 4 1 Glow plugs activation indicator light Battery charging system malfunction indicator light Low engine oil pressure warning light High engine coolant temperature warning light BELT GROUND DRIVE BELT WALKER P N 2248 YO ENGINE PTO BELT WALKER P N 2230 OJO Location Underside of Rear Body Part Number 2107 4 1 Ground drive belt routing 2 PTO clutch belt routing 15 16 Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Manual A WARNING N mi J STRAP LOCATION
26. or adjusting the ma chine remove the key from the ignition switch and disconnect the electrical plug on the fuel shut off solenoid Engine Cooling System Coolant Level NEVER remove the radiator pressure cap when the engine is hot hot water could spray and cause a burn if the cap is taken off too soon Overflow Tank Check the coolant level in the coolant recovery tank and maintain the coolant level between the FULL and LOW marks on the recovery tank When the engine is cold the coolant level should be at or slight ly above the LOW mark on the recovery tank If the coolant level is low remove the radiator cap and fill to the overflow port level and then fill the recovery tank above the LOW mark Use a pre mixed 50 50 solution of antifreeze ethylene glycol and distilled water to fill the cooling system CHECKING SERVICING IMPORTANT The coolant solution of antifreeze and distilled water must be thoroughly pre mixed before putting it in the engine adding pure antifreeze into the radiator may cause damage to the engine by causing overheating Alternator Belt Tension Check and adjust the belt tension to avoid engine overheating and insufficient battery charging Push on the belt in the middle of the span between the alternator and crankshaft If properly tensioned it should deflect about 0 4 in 10 mm Also check the belt for cracks or deterioration Alternator Belt NS g 0 4 in 10 mm Deflection
27. specifically instructed to do so The electrical system battery contains sulfuric acid Avoid any contact with skin eyes and clothing Keep the battery and acid out of reach of children The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Safety Instructions Operating If equipped with optional ROPS e Always keep the ROPS roll bar in the up right and locked position when operating e Alwaysusethe seat belt when the roll bar is upright e Only lower the roll bar when absolutely necessary for overhead clearance e Never use the seat belt when the roll bar is lowered Operate the mower only in daylight or in good artificial light with good visibility of the area being mowed Siton the seat when starting the engine and op erating the machine Keep feet on the deck foot rests at all times when the tractor is moving and or mower blades are operating Never operate the tractor without a deck or implement in stalled For a beginning operator learn to steer ma neuver the tractor with a slow engine speed before attempting any mowing operation Be aware that with the front mounted mower con figuration the back of the tractor swings to the outside during turns Do not mow around overhanging tree branches or bushes at the same height as the operator s torso and head where inad vertent contact may cause injury
28. the air cleaner is not required Use the air filter restriction gauge on the air cleaner outlet to determine when the air filter needs servicing a yellow indicator will show when the filter is overly restricting airflow into the engine IMPORTANT Use only Enginaire air filter elements for replacement Walker 5090 1 or 5090 3 Aftermar ket filters may not seal properly or filter efficiently Air Cleaner Components Shown with Cover Removed IMPORTANT The Enginaire air cleaner uses a dry paper type air filter element NEVER apply oil to the paper element Enginaire Air Cleaner Cover Air Cleaner Cartridge Safety Filter Enginaire Air Cleaner Air Cleaner Band Dust Ejection Valve Turbine Precleaner Air Intake Air Filter Hose Restriction W Engine Air Cleaner System Components 49 50 Maintenance Instructions Air Filter Restriction Gauge Push Button to Reset Indicator After Service Air Filter Restriction Gauge Location Inspect the paper element after every 100 hours of service and replace the element and safety filter ev ery 400 hours or when dirty or damaged More frequent replacement may be required when operat ing in extremely dusty conditions as indicated by the air filter restriction gauge Service the air cleaner as follows 1 Unlatch and remove Enginaire air cleaner cover Wash the cover and dust ejection valve Check that these components are in good
29. the paper media Replace element if necessary Check the condition and resilience of the radial sealing surface inside of the open end of the filter Replace the filter if any cracks tears or other damage to the sealing surface are noted Without removing visually inspect the condition ofthe safety filter for damage or holes The safe ty filter should only be removed for replacement every 400 hours or when dirty or damaged IMPORTANT Prior to removing the safety filter make sure the inside surface of the air cleaner canisteris clean This will minimize the risk of dirt entering the outlet tube which can cause prema ture engine wear After removingthe safety filter use a clean damp cloth and wipe the interior of the air cleaner can ister clean Use special care to clean both the inside and outside surfaces of the outlet tube IMPORTANT Any dust left on the inside of the outlettube will go into the engine and cause wear Check the outside surface of the outlet tube for smoothness and cleanness this is the sealing surface Insert and seat the safety filter and primary filter element carefully into the canister applying pressure at the outer rim of the filter not at the flexible center Make sure the filter element is completely in place before installing the cover NOTE DO NOT usepetroleum based lubricants on the sealing surfaces of the filter use talcum powder or dry silicone lubricants if required for filter
30. will also prevent the deck from unhooking from the tractor and falling potentially causing deck ortractor damage Damage to other items parked in front of the deck may also occur N NANANA x CM CU SR 5 X gt lt J fh 5 FT X dh Te rh Hi 6 E ilk NN eS No Driving Zone Maintenance Instructions CAUTION Maintenance procedures requiring special training or tools should be performed by a trained technician MAINTENANCE SCHEDULE CHART RECOMMENDED SERVICE INTERVALS MODEL MBSY YANMAR ENGINE Air cleaner is remote mounted Enginaire unit replace filter s every 400 hours and dust ejection valve every two years or when worn or damaged Change engine oil and filter after first 35 hours of operation of a new engine break in period See Authorized Yanmar Engine Dealer for this service Service Item Daily Hou rs Hours Hours Hours Yearly 2 Yeas Pade Check Engine Crankcase Oil Level X 43 Check Coolant Level in Radiator and Overflow Tank 55 Clean Radiator Screen and Cooling Fins X 51 Check Security of Air Filtration Components X 56 Check Air Filter Restriction Gauge x 49 Clean Grass Buildup Under Deck x 52 Check Transaxle Cooling Fan Condition
31. 3 mm using 20W 50 API Service Class SL or higher oil Start and drive the unit for 1 2 minutes Ifthe transaxle sounds noisy or has poor steering response there may be air trapped in the trans axle Follow purge instructions below To purge air from transaxle raise unit and block with tires off the ground With engine running slowly move Forward Speed Control forward and backward 5 to6 times Turn off engine and check oil level and add if needed Repeat procedure until transaxle operate at normal noise levels and move smoothly in forward and reverse Maintenance Instructions CLEANING If a pressure washer is used on the ex posed working parts avoid water on the electrical parts and the engine cooling system Engine Air Cleaner System Turbine Precleaner Do frequently check the Turbine Precleaner locat edin the end capofthe air cleaner assembly for free movement ofthe internal fan Shine lightinto end cap to verify movement of fan with engine running Enginaire Air Cleaner A remote mounted Enginaire air cleaner pro vides the air filtering function The paper filter ele ment slides over an outlet tube inside the air clean er canister with radial sealing action eliminating the possibility of dust leaks due to improper filter installation Intake design internal baffling anda dust ejection valve provide dust separation and automatic precleaning action Daily or frequent CLEANING servicing of
32. ANING the Engine Air Cleaner System in Maintenance Instructions CHECK ENGINE COOLING SYSTEM Check the radiator air intake screen to make sure the screen is clean and free of obstruction Also the radiator cooling fins should be inspected and cleaned if there is any buildup of dirt or debris Remove the intake screen assembly to inspect and clean Check the coolant levels in the radiator and overflow tank If additional coolant is needed refer to CHECKING SERVICING the Engine Cooling System in Maintenance Instructions DO NOT remove the radiator pressure cap when engine is hot CHECK HYDROSTATIC TRANSAXLE OIL LEVEL Refer to LUBRICATION for Transaxle Lubrication in Maintenance Instructions CHECK SECURITY OF DRIVE TIRE MOUNT ING NUTS The eight 8 Drive Tire mounting nuts should each be torqued to 75 to 85 ft lbs 102 to 115 N m INSPECT FIVE 5 DRIVE BELTS Engine Alternator PTO 3 and Ground Drive C CHECK TIRE PRESSURE Deck Caster Wheel 20 PSI 137 kPa Drive 15 PSI 103 kPa Rear 20 PSI 137 kPa Assembly Instructions 5 CHECK FUNCTIONS OF WARNING LIGHTS AND WARNING HORN Turnthe ignition key to the RUN position Low Engine Oil Pressure Warning Light Battery Charging Sys tem Malfunction Indicator Light and Warning Horn should all operate indicating normal function CHECK FUNCTION OF SAFETY INTERLOCK SWITCHES Refer to Operating Instructions to check for proper operation of
33. Before adjusting cutting height or servicing move the Forward Speed Control FSC into the NEUTRAL PARK position engage the parking brake and disengage the blade clutch PTO Tractor should not be moving while adjusting cutting height Cutting height is adjusted from operators seat using the height pedal to assist in raising the deck while positioning the height adjustment lever and hitch pin Disengage PTO and stop tractor Push down on height pedal until it latches in the full up position Select desired height by moving the hitch pin to the desired height Push down on the height pedal and lift up on the height adjustment lever Slowly release the height pedal while lifting the lever until there is no pressure on the pedal Cutting Height Adjustment Transport Position 1 Disengage the PTO 2 Push down height pedal until it latches in the full up position Height Adjustment Lever Hitch Pin Cutting Height Adjustment Components 37 38 Operating Instructions TRANSAXLE LOCKOUTS IMPORTANT DO NOT TOW this mower faster than 2 mph 3 2 km h with the transmission lockout en gaged Towing can produce excessive internal pressure and damage the transaxle s To move the mower with the engine NOT running dead battery maintenance etc the transaxles should be unlocked released Raise the body Pull up the transaxle lockout rods on both the RH and LH transaxles and secure into place by
34. FOR TRANSPORT DO NOT TRANSPORT OR TRAILER IN THE TILT UP POSITION WITHOUT TIE DOWN STRAPS AND SETTING THE PARKING BRAKE 8653 1 Location Top of Deck Housing Part Number 8653 1 1 Warning secure deck with straps and engage parking brake before transporting or trailering with deck tilted up 4 75 4 25 3 75 3 25 2 75 2 25 1 75 1 25 Location Deck Height Adjuster Part Number 2748 1 1 Move pin to desired height of cut Location Flex Coupler Guard in Front of Engine Part Number 8600 2 Warning entanglement and cutting dismem berment hazards Keep away from rotating shafts belts and other components Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Manual Location Right Fender Part Number 2802 4 Warning do not operate the machine without a deck or other implement attached Forward Speed Control Move lever forward to increase speed back to stop Body Tilt Latch Raise lever to release e Lift at back of body to raise Warning do not engage PTO clutch with PTO shaft disconnected PTO Clutch Lever Move lever forward to engage PTO clutch back to disengage Location ROPS Roll Bar Optional P
35. FSC lever is moved backward to the NEUTRAL PARK position Fuel Pump Priming Engine is equipped with a mechanical fuel pump and the fuel system will need to be primed in certain conditions after running out of fuel or after fuel sys tem maintenance Move priming lever on fuel pump until the clear cup on the fuel filter water separator shows filled with fuel before attempting to crank the engine NOTE DO NOT crank the engine to prime the fuel system as this may damage the starter from pro longed cranking Fuel Pump Primer Fuel Pump Primer 27 28 Operating Instructions Steering Levers Each drive wheel is controlled by its own indepen dent steering lever for both steering function and FORWARD REVERSE motion The FSC lever sets the maximum forward speed and also sets the for ward position of the steering levers The steering levers operate only with a backward pulling move ment of the lever which causes the drive wheel for that lever to first slow down stop and then reverse with a full backward lever stroke The levers are re leased to the FORWARD position for straight ahead ground travel NOTE Pushing forward on the steering levers will not cause any change in tractor motion there will be no steering lever reaction and there will be no machine damage Blade Clutch PTO The blade clutch lever has two positions Pulling the lever FORWARD engages the PTO that drives the mower blades Pullin
36. OW mark and the FULL mark LUBRICATION IMPORTANT DO NOT operate engine without sufficient oil supply in the crankcase DO NOT operate with oil level below the LOW mark or above the FULL mark on the dipstick Full Mark Operating Range Low Mark Dipstick Operating Range If additional oil is needed refer to Specifications for proper crankcase lubricant Fill to the FULL mark IMPORTANT DO NOT overfill crankcase oil above FULL level as this CAN result in engine overheating loss of power and possible engine damage 43 44 Maintenance Instructions Changing Engine Crankcase Oil Oil Filter Change the engine crankcase oil after every 100 hours of operation and the oil filter after every 200 hours of operation as follows 1 Park the mower on a level surface with the en gine stopped The engine oil should be warm before draining If notwarm from operation start the engine and run a few minutes to warm the oil Before removing the dipstick clean the area around it to keep any dirt or debris out of the engine Remove the dipstick and oil drain plug and drain oil into a suitable container Be sure to allow ample time for complete drainage Before removing the oil filter clean the area around the filter to keep dirt and debris out of the engine Remove the old oil filter and wipe off the filter mounting surface on the engine Cil Fill View from Above Right Side of Tractor Oil
37. WALKERTzZMONWTERS OPERATOR S MANUAL Safety Assembly Operating and Maintenance Instructions Model MBSY Please Read and Save These Instructions Beginning S N 112057 For Safety Read All Safety and Operation P N 2000 4 Instructions Prior to Operating Machine Effective Date 05 23 11 Foreword Thank you for purchasing a Walker mower Every effort has been made to provide you with the most reliable mower on the market and we are sure you will be among our many satisfied customers If for any reason this product does not perform to your expectations please contact your local dealer Every customer is important to us Your satisfaction is our goal Please read this manual thoroughly This manual is to be used in conjunction with the engine manufacturer s manual for the specific engine on the mower model you have purchased Before you operate your new mower please read this entire manual Some ofthe information is crucial for prop er operation and maintenance of this mower it will help protect your investment and ensure that the mower performs to your satisfaction Some of the information is important to your safety and must be read and understood to help prevent possible injury to the operator or others If anything in this manual is confusing or hard to understand please contact your local authorized dealer or call our service department at 970 221 5614 for clarification before operating or servicing this mower Thi
38. an equal amount of material from each end of the blade when sharpening 57 58 Maintenance Instructions Blade Balancer Blade Balanced on Magnetic Wall Mounted Balancer 7 Mount the blade with wing tips pointing up into the housing Reinstall the blade washer and bolt Tighten the bolt to 64 ft Ib 87 N m Drive Belts Raise the body and inspect the condition of the five 5 drive belts after every 25 hours of operation engine alternator 1 PTO drive 3 ground drive 1 If the belts show signs of cracking or deteriorat ing the belts should be replaced Refer to REPLAC ING REPAIRING the Drive Belts in this section Fuel Lines and Clamps Every year inspect the fuel lines from the tanks to engine for deterioration or damage Also inspect the fuel line clamps for tightness Good preventive maintenance calls for complete replacement of fuel lines and clamps every two 2 years NOTE This procedure is of special importance for the diesel engine due to poor performance when air is injected with the fuel Radiator Hoses and Clamps Inspect the radiator hoses every 200 hours for dete rioration or damage Also check the tightness of the hose clamps Good preventive maintenance calls for complete replacement of the radiator hoses and clamps every two 2 years CHECKING SERVICING PTO U Joints The PTO U joints should be inspected yearly for looseness and wear If either is noticed the respec tive shaf
39. art Number 5685 3 1 Warning roll over crushing hazard Donot operate the machine on steep slopes or near drop offs e Avoid quick and or sharp turns when operat ing on slopes During normal operation always keep the ROPS locked fully upright and use the seat belt Never use the seat belt if the ROPS is not locked fully upright Do not operate the machine on slopes if the ROPS is not locked fully upright Do not remove the ROPS 17 18 Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Manual DESIGNED AND BUILT BY WALKER MFG COMPANY FORT COLLINS CO 80528 USA i Ie Location Left Fender Part Number 2802 5 Throttle Warning read Operator s Manual before oper ating the machine Warning wear eye and ear protection when op erating the machine Warning read Operator s Manual before servic ing or performing maintenance Engage parking brake e Remove ignition key Warning roll over hazard Do not operate on slopes greater than 15 degrees Warning thrown object hazard Keep bystanders away from the machine when operating Warning entanglement hazard e Keep all guards in pla
40. ce Instructions 25 Operating Instructions CONTROL IDENTIFICATION LOCATION AND Prolonged cranking can damage the starter motor FUNCTION and shorten battery life Release the key when the engine starts and it will return to the RUN position A To stop the engine rotate the key counterclockwise CAUTION to the O position NOTE When starting the engine turn and hold the ignition key in the glow plug preheat position The time required is approximately 5 to 15 seconds de pending on engine temperature Refer to START ING THE ENGINE in this section Before operating the mower become fa miliar with the location and function of all operator controls Knowing the location function and operation of these controls is important for safe and efficient opera tion of the mower Glow Plug Preheat OFF Ignition Switch The ignition switch is used to start and stop the en gine and preheat the diesel engine The switch has four positions 3 is the glow plug preheat posi tion O is the OFF position RUN is the position the key returns to after starting S is the START posi tion When starting the engine turn the key clock wise to the S position Do not hold the key in the S position longer than 10 seconds If the engine START does not start return the key to the O position for at least 60 seconds before making a restart attempt Ignition Switch Forward Speed Control FSC Rear Bod
41. ce while engine is run ning Parking brake e Move lever forward to engage Parking Brake back to disengage Assembly Instructions SETUP INSTRUCTIONS Walker Mowers are shipped partially assembled to our distribution network and are typically assembled by the selling dealer For any additional assembly besides the following contact your Walker dealer Battery Service Raise mower body up for battery access Check the battery for electrolyte level and charge The electro lyte level should be at the bottom of the vent wells 1 4 to 1 2 in 6 to 13 mm above plates If the spe cific gravity is less than 1 225 the battery needs charging If the battery has been shipped dry or is wet but needs service refer to the following instruc tions IMPORTANT Makesure battery is securely mounted in the frame Aloose battery may cause damage to the case resulting in acid leakage and severe damage to the machine Ahazard may be created by damage to critical working parts and safety systems Wet Battery Service If the battery has been shipped wet but the electro lyte level is low or the battery needs to be charged then 1 Fill each battery cell with drinking water to the bottom of the vent wells Charge battery Referto Battery Chargingin this section Dry Battery Service Activating a battery can be dangerous The battery should be taken to a reliable service station battery store or power equipment dealer where a t
42. ces Do not change the engine governor settings or overspeed the engine The governor has been factory set for maximum safe engine operating speed Use genuine factory replacement parts Sub stitute parts may result in product malfunction and possible injury to the operator and or others 12 Use care when charging the battery or per forming maintenance on the battery and electri cal system a Makesure the battery charger is unplugged before connecting or disconnecting cables to the battery Charge the battery in a well ventilated space so gases produced while charging can dissipate Make sure the battery vents in the caps are open Keep sparks flames and smoking materi als away from the battery at all times To avoid sparks use care when removing bat tery cables from posts Disconnect both battery cables before unplugging any wiring connectors or making repairs on the electrical system IMPORTANT Keep all applicable manuals im mediately accessible to anyone who may oper ate or service this machine 13 14 Safety Instructions SAFETY CONTROL AND INSTRUCTION DECALS Safety Control and Instruction Decals are installed on the machine if any are missing illegible or damaged a replacement should be ordered and installed before putting the machine into operation The Decal Part Number is listed below and in the Parts Manual Location Each End of Mower Deck Part Number 8600 8 1 Warning
43. condition The dust ejection valve is subject to wear and deterioration and should be inspected carefully and replaced every 2 years or when damaged Thelips ofthe valve should close and fit together any cracks deformation or wear in the valve is cause for replacement Remove the filter element by pulling it out of the canister There will be some initial resistance as the filter seal breaks loose and slides off of the outlet tube Gently move the end of the filter up and down and side to side or twist to loosen the seal Use gentle action to minimize the amount of dust dislodged as the filter is removed Discard the filter element if excessive air flow restriction has been indicated by the air filter re striction gauge and proceed to Step 6 Clean the filter element by gently tapping on a flat hard surface If excessive restriction still exists after cleaning the element it should be replaced CLEANING NOTE Use care when cleaning the filter ele ment The filter element and or seal surface may be damaged by tapping too hard or hitting on an uneven surface or sharp edge Washing the ele ment in water or cleaning solution is not recom mended Do not try to clean the element with compressed air Remember replacing a filter is less expensive than replacing a dusted engine Use a bright light inside the elementto inspect for damage Check the element very carefully for pin holes or other damage that will allow dirt to leak through
44. dd oil if necessary When the engine is first operated with a new oil filter the oil level will drop slightly as the filter is filled with oil Maintenance Instructions Mower Deck Spindle Lubrication Lubricate each deck spindle grease fitting every 25 hours Use SAE general purpose lithium or molybdenum base grease for grease fittings DRD52 or DSD60 Mower Deck Lubrication Lubricate the U Joint in the drive shaft every 8 hours with SAE general purpose lithium or molybdenum base grease Transaxle Lubrication e The transaxle oil lubrication is SAE 20W 50 API Service Class SL or higher engine oil e Inspect both transaxle cases and hoses after every 100 hours of operation for visible leaks e Thefluidlevels foreach transaxle can be checked visually by looking atthe fluid levels in each expansion reservoir When the transaxles are cold the fluid level in the expansion reservoirs should be between 1 4 and 1 2 in 0 64 cm and 1 27 cm Y r Y Y 4 Expansion Reservoir Location LUBRICATION Grease Fitting and Oil Point Lubrication Lubricate the grease fittings and oil points after every 25 hours of operation Lubricate more often when operating in dusty or dirty conditions Use SAE general purpose lithium or molybdenum base grease for grease fittings and light machine oil SAE 10 to lubricate oil points Lubricate the locations shown in the Chassis and Deck Lubricati
45. de of the tractor when the operator is seated facing forward in the tractor seat SIDE DISCHARGE SD discharges mowed material from the right side of the mower deck STEERING LEVERS steer the tractor by con trolling the two transaxles TRACTOR is the prime mover including the en gine drive train operator seat and controls to operate the mower TRANSAXLE transmits and controls power from the ground drive belt to the main drive wheel TRANSAXLE LOCKOUT RODS release the transaxles to permit freewheeling the tractor IDENTIFYING NUMBER LOCATIONS The tractor serial number plate is affixed to the tractor body just below the left rear corner of the seat The mower deck serial number plate is affixed alongside the angle iron framing on the LH side ofthe LH mower blade drive Model and serial numbers are helpful when obtaining replacement parts and maintenance assistance Forready reference please record these numbers in the space provided Tractor Model No Tractor Serial No Deck Serial No Engine Model No Engine Serial No Date of Purchase Fill In By Purchaser General Information SERVICING OF ENGINE AND DRIVETRAIN Serial Number COMPONENTS The detailed servicing and repair of the engine and transaxle are not covered in this manual Only rou tine maintenance and general service instructions are provided For the service of these components during the limited warranty period it is
46. des for straightness by marking the blade tip position inside the deck housing and then rotating the opposite end ofthe blade to the same position and comparing If the dif ference in blade tip track is more than 1 8 in 3 mm the blade is bent and should be re placed DO NOT try to straighten a blade that is bent NEVER weld a broken or cracked blade ALWAYS replace with a new blade to assure safety CHECKING SERVICING If the blade cutting edge is dull or nicked it should be sharpened Remove blades forsharp ening by grasping the end of the blade using a ragorathick padded glove while loosening and removing the bolt and washer that mounts the blade Grind cutting edge atthe same bevel as the orig inal Sharpen only the top of the cutting edge to maintain sharpness NOTE Blades can be sharpened with an electric blade sharpener conventional electric grinder or a hand file ALWAYS wear eye protection and gloves when sharpening a blade Intersection Wear Area Sharpen at Original Wing Tip XA Do Not Grind or Sharpen on Underside Mower Blade Profile for Sharpening Check blade balance by positioning the blade horizontally on a blade balancer or use a nail or shaft through the center hole If either end ofthe blade rotates downward grind remove metal on that end until the blade will balance The blade is properly balanced when neither end drops Balance of a blade is generally main tained by removing
47. e quired is approximately 10 to 15 seconds For temperatures 35 F 2 C or higher the time re quired is approximately 5 to 10 seconds Move the throttle 1 4 to 1 2 open toward FAST Turn the ignition switch to the START position to start the engine Release the key to RUN posi tion as soon as the engine starts IMPORTANT DO NOT crank the engine con tinuously for more than 10 seconds at a time If the engine does not start turn the key to the OFF position and allow a 60 second cool down period between starting attempts Failure to follow these guidelines can damage the starter motor and shorten battery life Contact your Walker dealer or authorized Yanmar dealer for addition al help TROUBLESHOOTING NOTE If the engine cranks but does not start check the following e Engine is equipped with a mechanical fuel pump and the fuel system will need to be primed in certain conditions after running out of fuel or after fuel system maintenance Move priming lever on fuel pump until the clear cup on the fuel filter water separator shows filled with fuel before attempting to crank the engine e sthefuel valve solenoid operating Look at the exhaust pipe when cranking the engine no smoke indicates no fuel is reaching the cylinder If the solenoid is not operating contact your Walker dealer e Are the glow plugs operating Look at the exhaust pipe when cranking the engine white smoke indicates improper glow plug operation a
48. e use of two hands on the steering levers tends to cause overcontrol Learn to operate the steering levers with smooth action Jerky movements are hard on the transmission and lawn For sharp turns do not allow the inside wheel to stop andtwiston the grass Pullthesteering lever controlling the inside wheel into reverse for a smooth rolling turn one wheel rolling forward while the other rolls backward Practice maneuvering the mower until you can make it go exactly where you are aiming Remember for an emergency stop or in case of loss of control machine movement can always be stopped quickly by pulling the Forward Speed Control into the NEUTRAL PARK position Move the FSC out of NEUTRAL PARK position to the desired forward speed DO NOT hold for ward on steering levers It is not necessary to hold the FSC leverin position since a friction lock maintains the selected lever position and for ward travel speed In case the transmission drive belt breaks during operation and if the machine is on a slope the machine will freewheel down the slope To maintain control immedi ately 1 Release the steering levers and simultaneously 2 Move the FSC to the NEUTRAL PARK position When the ma chineis stopped or moving slowly engage the parking brake NOTE This is exactly the same procedure used to normally stop and park the machine NOTE If the FSC lever will not stay the se lected position the friction
49. ection 59 60 Maintenance Instructions REPLACING REPAIRING To prevent accidental starting of the engine when replacing parts or repairing the machine remove the key from the ignition switch and disconnect the electrical plug on the fuel shut off solenoid IMPORTANT ALWAYS use genuine factory re placement parts Substitute parts CAN result in prod uct malfunction and possible injury to the operator and or others Ground Drive Belt REPLACING REPAIRING Drive Belts There are five 5 individual drive belts on the ma chine e Engine PTO Belt Matched Set of 3 e Ground Drive Belt e Alternator Belt Engine The belts may be removed and replaced using the procedures described on the following pages Engine PTO Belt Matched Set Belt Locations Engine Hidden for Clarity Maintenance Instructions REPLACING REPAIRING PTO Belt 1 Toremove the PTO belt b the belt off the pulley and remove the elt a Remove wire lock pins 4 open belt guards Idler Arm Wire Lock Pins Upper LH Right Hand Guard Wire Lock Pin PTO Belt Matched Set Wire Lock Pin Pulley PTO Guard PTO Belt Belt Guards Open Engine Hidden for Clarity 2 Toreplace the PTO belt a Reverse the removal procedure to replace b Secure wire on lock pin above tab on lower the engine belt PTO guard and right hand guard Right Hand Guard Upper LH d Guard Lower LH An Secure wire in SA front of tab A
50. ement blades offered by other manufacturers cannot be guar anteed they could be dangerous ALWAYS use genuine factory replace ment parts Substitute parts CAN result in product malfunction and possible inju ry to the operator REPLACING REPAIRING Maintenance Instructions Replacing Deck Drive Belt 1 Toremove the deck drive belt a Remove deck footrest and two 2 covers over the RH and LH blade spindles Loosen belt tensioner stop bolt and turn in ward until retracted 1 in 2 5 cm from the operating position Lock drive pulley so that it can not rotate f deck is installed on tractor the PTO blade brake will prevent the drive pulley from rotating If deck is detached from tractor use pry bar or large screwdriver positioned through the drive shaft U joint to hold shaft and prevent rotation Spindle Cover Pulley moves inward to allow belt to slip off LH blade spindle Belt Tensioner Stop Bolt REPLACING REPAIRING From a position on the LH side of the deck grasp belt midsection and pull to compress the belt tensioner springs and move the tensioning pulley inward The belt will then slip off the LH spindle pulley and can be completely removed 2 Install the deck drive belt by reversing the re moval procedure a Route the belt as shown on the belt routing decal located on the deck housing Leave the belt loose at the LH spindle and then install the belt by compressing the belt t
51. en sioner as noted above After the belt is in place reset the belt ten sioner stop bolt by turning outward until contacting the pulley bracket and then making one 1 additional turn Reinstall spindle covers and footrest Footrest Spindle Cover Use pry bar or screwdriver through U joint to prevent rotation Grasp belt here and pull from LH side to compress springs on belt tensioner Deck Drive Belt Replacement 67 Maintenance Instructions ADJUSTMENTS Transmission Control IMPORTANT The proper adjustment of the tran saxle control stops is essential for efficient opera tion and life of the transaxle These stops are prop erly adjusted at the factory and should only require readjustment if the transaxle or related control link age is removed or changed NOTE It would not be unusual for a new machine after initial 5 or 10 hours of operation to begin to not travel straight this is due to the break in of the tran saxles Step 1 Steering Lever Position Adjustment NOTE For proper operation the steering levers should be adjusted to sit evenly using the following procedure 1 Examine the steering levers to make sure they are parallel front to back in relation to one an other If they are not equal adjust accordingly The handles may or may not be even at this point NOTE The LH steering lever is non adjust able This procedure will require adjustment of the RH lever to make it even wi
52. ended This will prevent children and inexperienced operators from starting the engine Engage the parking brake Also engaging the parking brake is recommended when stopping or parking the machine in a confined space with little tolerance for movement IMPORTANT Thetransaxles lock to prevent the mowerfrom rolling freely with the engine stopped However if the mower is parked on a slope it is necessary to ENGAGE the parking BRAKE to prevent the mower from creeping This is due to asmall amount of slippage in the transaxles es pecially when transmission fluid is warm In case the transmission drive belt breaks during operation and if the machine is on a slope the machine will freewheel down theslope To maintain control immediately 1 Release the steering levers and simultaneously 2 Move the FSC to the NEUTRAL PARK position When the machine is stopped or moving slowly engage the parking brake NOTE The emergency stop procedure is exactly the same procedure as used to normally stop and park the machine Operating Instructions FUEL SELECTOR VALVE The tractor is equipped with dual fuel tanks A fuel selector valve regulates which tank is being utilized The valve is located on the right hand side of the en gine The valve switches between the LH and RH fuel tanks DO NOT run tank dry before switching tanks Fuel Selector Valve ADJUSTING CUTTING HEIGHT Never adjust cutting height while the moweris moving
53. er frame Reinstall footrest by inserting locking fingers under deck plate and reattaching hood latch assembly CLEANING Footrest Locking Deck Plate Hood Latch Assembly Footrest Installation Do not operate machine with deck locking arms disengaged 53 54 Maintenance Instructions Transaxle Housing Keeping the housing on the transaxles clean and free of obstruction is essential to avoid overheat ing the transmission fluid and shortening transmis sion life The housing should be checked every 100 hours and cleaned if necessary To clean the housing use compressed air and or a pressure washer Pay close attention to any oily dirt build up on the transaxle housings This may be the result of an oil leak If an oil leak is noticed contact your local Walker dealer Cooling Transaxle Housing and Cooling Fins CLEANING IMPORTANT In case an oil leak develops on the input shaft the cooling fan blowing dusty air and oil on the transmission will quickly pack the cooling fins with oily dirt If this condition occurs contact your dealer immediately to avoid overheating and dam aging the transaxle An additional procedure in maintaining transaxle cooling is to inspect the cooling fans Replace the fan s if blades are missing or damaged 23 E UE n Transaxle Cooling Fans Maintenance Instructions CHECKING SERVICING To prevent accidental starting of the en gine when servicing
54. erated at full speed e When mowing in adverse conditions tall and or wet grass mow the grass twice Raise the mower to the highest setting 5 in 127 mm for the first pass and then make a second pass cutting to the desired height e Use a slow setting on the FSC for trimming op erations e Make sure the mower is leveled properly for a smooth cut Refer to Deck Leveling in Assembly In structions e Use an alternating stripe mowing pattern for best appearance and vary the direction of the stripe each time the grass is mowed to avoid wear patterns in the grass e Avoid damage to the grass by slipping and skid ding of the drive tires Use smooth control move ments ofthe steering levers since the transaxles are power boosted controls and jerking the levers can easily slip the tires For sharp turns do not allow the inside wheel to stop and twist on grass pull inside steering lever into reverse for a smooth rolling turn one wheel rolling forward while the other rolls back ward e When using the DSD60 deck or other side dis charge decks the side discharge shield must not be removed and must be kept in the lowest possible position to deflect grass clippings and thrown objects downward Orient the side discharge away from sidewalks or streets to minimize cleanup of clippings When mowing close to obstacles orient the side dis charge away from obstacles to reduce the chance of damage to property by thrown objects
55. ets used at factory settings to be used for reference PTO Clutch Disengaged ADJUSTMENTS Use the following procedures to check and adjust clutch disengagement and brake action Step 1 dler Pulley Maximum Travel Adjustment Loosen the brake band adjustment nut allowing clutch pivot stop arm and stop bolt to make contact refer to Blade Brake Band Adjustment illustra tion 1 Adjust the pivot stop bolt to give 1 5 8 in to 1 3 4 in 41 mm to 44 mm pulley travel from clutch en gaged to clutch disengaged Check and adjust the pulley travel first engage the clutch then measure the distance the pulley travels as the clutch is disengaged and the stop arm contacts the stop bolt NOTE This adjustment will prevent excessive pulley travel that can cause belts to develop too much slack causing possible belt derailment upon disengagement 1 5 8 in to 1 3 4 in 41 mm to 44 mm CLUTCH DISENGAGED CLUTCH ENGAGED Idler Pulley Clutch Pivot Stop Bolt Brake Engagement Arm Clutch Idler Pulley Travel 73 74 Maintenance Instructions Step 2 Blade Brake Band Adjustment After the maximum pulley travel is set adjust the working travel of the clutch idler pulley by adjusting the brake band nut and make the following adjust ment as needed 1 Adjust the blade brake band using the adjust ment nut until pulley travel is approximately 5 8 in
56. facturing Company at 970 221 5614 BEFORE OPERATING 1 Readandunderstand the contents of this Op erator s Manual before starting and operat ing the machine Become thoroughly familiar with all machine controls and how to stop the machine and disengage the controls quickly Re placement Operator s Manuals are available by sending the Model and Serial Number to Walker Manufacturing Company 5925 East Harmony Road Fort Collins CO 80528 Never allow children to operate rider mower Do not allow adults to operate without proper instruction Clear the area to be mowed of any foreign objects which may be picked up and thrown by cutter blades Pick up all sticks stones wire and any other debris Keep everyone especially children and pets a safe distance away from the area being mowed Do not mow with bystanders in the area Do not operate the machine barefoot or wearing sandals sneakers tennis shoes or similar light weight footwear Wear substantial protective footwear 10 Safety Instructions Before Operating Do not wear loose fitting clothing that could get caught in moving parts Do not operate this ma chine while wearing shorts always wear ade quate protective clothing including long pants Wearing safety glasses safety shoes and a hel met is advisable and required by some local or dinances and insurance regulations Prolonged exposure to loud noise can cause im pairment or loss of hearing O
57. flector inthe lowest possible position When using the tilt up deck observe the fol lowing recommendations a Do not move tractor with deck in tilt up position b Never tilt body forward with deck in tilt up position Incase of a clogged or plugged mower deck a Disengage the blade clutch PTO set the parking brake and turn the engine off be fore leaving the seat LOOK to make sure blade drive shaft move ment has stopped before trying to unclog the system Never place hands under the deck use a stick or similar tool to remove clogged material 18 If the cutting blades strike a solid object or the machine begins to vibrate abnormally immedi ately disengage the blade clutch PTO stop the engine and wait for all moving parts to stop Thoroughly inspect the mower and repair any damage before restarting the engine and operating the mower Make sure cutter blades are in good condition and blade bolts are torqued to 64 ft lb 87 N m Do not touch the engine or muffler while the engineis running or immediately after stopping the engine These areas may be hot enough to cause serious burns Neverremovethe radiator pressure cap when the engine is hot hot water may spray and cause burns Do not use ether or any starting fluid to assist starting the engine in cold weather When leaving the machine unattended disen gage the blade clutch PTO stop the engine and remove the key
58. freely but is Install battery not loose Battery Cable Connection A WARNING DO NOT operate the machine without the grass deflector chute attached and in the lowest possible position Battery Clamp SN Secured by Wing Nut s Battery Installation Assembly Instructions Deck Discharge Shield Installation PTO Shaft Guard Installation Position the shaft guard as shown and mount with two 2 1 4 20 x 1 2 in bolts Carrier Frame 4 Tube Sockets W 4 PTO Shaft Guard Installation Tilt Up Roller Wheel Installation Mount the two 2 tilt up roller wheels on the brackets on the rear skirt of the deck housing using the P N 8490 axle bolt 3 8 in wave spring washer and 3 8 16 in Whiz locknut Tighten the axle bolt until the wheel rolls freely but is not loose Roller Wheel Installation DSD60 Shown Mower Deck Installation on Tractor Deck Installation 1 Lightly grease each deck support arm 2 on the tractor Refer to Mower Deck Installation pho to for location of deck support arm e eTe _ E Deck Support Arms Mower Deck Installation Engage the LH deck carrier frame tube socket first on the tractor support arms and then the RH tube socket Slide the deck onto the support arms and install lynch pins to secure deck Retract Coupler Ring Retract spring loaded coupler ring on the PTO Tube provided in Owner s Packet and insert coupler tool Refer to Quick Coupler Installa ti
59. g the lever BACKWARD disengages the PTO and engages the blade brake Parking Brake The parking brake functions by locking a detent arm internally into the transaxle Moving the lever FOR WARD engages the parking brake moving the le ver BACKWARD releases the brake IMPORTANT Stop the tractor completely before engaging the parking brake The parking brake uses a positive mechanical lock similar to the PARK position on an automotive automatic transmission If the tractor is moving when the brake is engaged it will result in sudden stoppage and possible internal damage to the transaxle NOTE lf pressure on the parking brake e g parked on a hill makes it impossible to release the parking brake with the parking brake lever move the mower gently forward or backward to allow the brake detent to release Parking Brake Disengaged Operating Instructions Circuit Breakers Two manual reset circuit breakers are located on the front body Each has a button that pops out if the circuit breaker trips The 10 amp circuit breaker pro tects the safety and ignition circuits The 7 amp pro tects the indicator lamps and hourmeter Glow Plug Warning Light The glow plug warning light indicates the glow plug function is in use Battery Charge Light The charge light indicates the electric system is not being charged Oil Pressure Warning Light The oil pressure warning light indicates that engine oil pressure is below the safe
60. ge oil every 400 hours of operation as follows 1 Thoroughly cleanthe exteriorofthe transmission housing before servicing Remove expansion tank cap to allow venting Using a 1 4 in hex wrench remove the plug on the lower inside of each transaxle allowing the oil to drain Remove the oil filter guard remove and replace the oil filter using an oil filter wrench Tighten filter by turning filter 3 4 to 1 turn after gasket contacts the filter base surface Reinstall the oil filter guard Referto Transaxle Oil Drain Plug Filter and Guard Location illustration Oil Filter Oil Filter Oil Drain Guard Plug Transaxle Oil Drain Plug Filter and Guard Location Shown with Deck Support Arms Removed for Clarity Reinstall drain plug Remove the oil reservoir hose attached to the elbow on top of the transaxle Remove the elbow to access the oil fill opening Fill the transaxles with 20W 50 API Service Class SLor higher oil through the opening where the elbows were Fill up to the opening LUBRICATION Before reinstalling the elbows screw the locking nut on the elbows down until they are snug the o ring on the elbow will be to the bottom of the o ring groove Screw Locking Nut Down Reinstall Transaxle Elbows Reinstall the elbows When the elbow begins to be snug position the elbow as it was when re moved and tighten the locknut Reinstall reser voir hoses to elbows Fill both reservoirs 1 4 1 2 in 6 1
61. he machine with the engine running Disengage the PTO clutch shut off the machine and re move the ignition key Proper lubrication is an important maintenance pro cedure It reduces wear and makes the machine qui eter and easier to operate Engine Oil Engine Break In Oil No special break in oil is required The engine is ser viced with 10W 30 Service Class SG oil from the factory The oil should be changed after the initial engine break in period of 35 hours Thereafter change oil after every 100 hours of operation Checking Engine Crankcase Oil Level Check the engine crankcase oil level before use and after each 8 hours of continuous operation IMPORTANT The importance of checking and maintaining the proper crankcase oil level cannot be overemphasized Check the oil level BEFORE EACH USE 1 Parkthe mowerona level surface with the en gine stopped Also make surethe engineis cool and oil has had time to drain into the sump allow at least five 5 minutes after stopping the en gine IMPORTANT NEVER check or add oil with the engine running Before removing the dipstick clean the area around the dipstick to keep any dirt or debris out of the engine Remove the dipstick wipe off with a clean rag then reinsert the dipstick into the tube and tighten Remove the dipstick again and check the oil level on the dipstick The oil level should be within the Operating Range on the dipstick be tween the L
62. hidden hazards When mowing tall grass mow higher than desired to expose any hidden obstacles Then cleanthe area and mow to the desired height Avoid sudden starts or stops Before backing the machine up lookto the rearto be sure no one is behind the machine Watch carefully for traffic when crossing or working near roadways Disengage the blade drive when transporting the machine across drives sidewalks etc Never raise the mower deck while blades are rotat ing 12 Safety Instructions Operating Do not mow or drive the tractor within 5 feet 1 5 meters of an embankment or re taining wall with drop off The maximum recommended side slope op erating angle is 15 degrees or 26 grade When operating the machine on a slope reduce speedanduse caution to start stop and maneu ver To prevent tipping or loss of control of the machine avoid sharp turns or sudden changes in direction Never adjust cutting height while the mower is moving Before adjusting cutting height or servicing move the Forward Speed Control FSC into the NEUTRAL PARK position en gage the parking brake and disengage the blade clutch PTO Tractor should not be moving while adjusting cutting height NOTE The clutch brake should normally stop drive line rotation within five 5 seconds of dis engaging the PTO clutch For side discharge mower decks do not oper ate with the grass deflector chute removed Keepthe de
63. hot radiator on the end of the indicator WARNING Radiator and engine parts can become ex tremely hot during operation Wear gloves and avoid touching hot parts while clean ing the radiator screen and cleaning debris away from the engine and cooling system 52 Maintenance Instructions Flushing Radiator and Changing Coolant Change engine coolant every year Drain the cool ant from the engine and radiator 1 Remove the radiator cap 2 Open the drain cocks on the engine block and radiator see the Yanmar Owner s Manual for location of the drain cocks Also drain the cool ant recovery tank If there is any indication of deposits or scaling inside the radiator use a commercial scale re mover and flush the cooling system thorough ly before adding fresh coolant Use a pre mixed 50 50 solution of antifreeze ethyl ene glycol and distilled water to refill the cooling system IMPORTANT The solution of antifreeze and water must be thoroughly pre mixed before putting it in the engine Adding pure antifreeze into the radiator may cause damage to the engine from overheating IMPORTANT Maintain proper coolant level in the radiator and coolant recovery tank The coolant level should be maintained between FULL and LOW marks on the coolant recovery tank Recheck the coolant level after the first time the engine has been operated after filling the coolant system it would be normal to add a little coolant afte
64. hour after the recommended interval 4 6 Hours DIL This reminder is only used one time In normal operating conditions oil changes in 100 hour intervals are acceptable Walker and the engine manufacturers recommend engine oil changes every 50 hours in extremely dirty or dusty conditions or for units with less than 100 hours annual use NOTE The blinking hour glass on the display means that the meter is operating properly Hourmeter Operating Instructions Optional Roll Over Protection System ROPS The ROPS may offer enhanced operator protection in the event of a roll over type accident but only if used correctly Fail ure to comply with the following ROPS instructions can result in serious injury or death if a roll over occurs Read and understand the following ROPS instruc tions before operating the machine e Keep the ROPS roll bar in the upright and locked position when operating the machine o Always use the seat belt when the ROPS roll bar is in the upright position o Make sure that the seat belt can be released quickly in the event of an emergency o Make sure that the mower body hold down latch is engaged e Lower the ROPS roll bar only when absolutely necessary for overhead clearance reasons o Never use the seat belt if the ROPS roll bar is not in the fully upright and locked position o Never lower the ROPS roll bar when operat ing in areas where there are slopes drop offs or other roll o
65. icularly important since contaminated fuel will damage the fuel injectors and injection pump NOTE It may be necessary to use the fuel pump primer to bleed purge out air bubbles the diesel fuel injector system when initially filling an empty tank Refer to Fuel Pump Priming instructions in the Op erating Instructions Handle diesel fuel with care Use safe refueling procedures e DO NOT fill fuel tanks with the engine running e If the engine is hot allow to cool before refueling e Useanapproved fuel container e Fuel the mower outdoors e DO NOT smoke while refueling e Avoid spilling fuel use a funnel or spout e DO NOT overfill the fuel tanks fill up to about 1 in 25 mm below the top of tank IMPORTANT DO NOT permit dirt or other foreign matter to enter the fuel tanks Wipe dirt from around the filler cap s before removing Use a clean fuel storage container and funnel CHECK ENGINE CRANKCASE OIL LEVEL Check the engine crankcase oil level before use and after each 8 hours of continuous operation Referto LUBRICATION for Checking Engine Crankcase Oil Level in Maintenance Instructions CHECK AND SERVICE ENGINE AIR CLEAN ER SYSTEM Check airfilter restriction gauge to make sure the yellow indicator disk is in the safe operating green range Check condition cleanliness and security of the complete air cleaner system inspect air filter ev ery 100 hours For detailed procedures refer to CLE
66. ke Parking Brake Neutral Final Drive MBSY Yanmar 3TNM72 Cyl Diesel Liquid Cooled 55 1 cu in 904 cc 23 6 17 4 3600 RPM 3600 40 9 55 5 2600 RPM 1100 25 3 1 qts 2 9 liters API CD or Higher Grade Oil with 10W 30 Viscosity or 15W 40 Above 86 F 30 C P N 119305 35151 9 4 Gallons 35 6 liters Two Independent 4 7 Gallon Tanks with Selector Valve Diesel Fuel 2 D 7 0 qts 6 6 liters Electric radiator cooling fan with reversible self cleaning action 50 50 Pre Mix Antifreeze Water Remote mounted Enginaire VLR Walker P N 5090 1 Primary 5090 3 Safety Filter 12 Volt 41AH 340 CCA Interstate U1 SP40 Automotive Type Alternator 40 Amp DC Regulated Negative Ground Diesel with Glow Plugs 12 Volt Electric Ring Gear Type Solenoid Shift Ignition Lockout by Seat Switch Transmission Neutral and Blade Clutch Auto Reset One 40A Two 30A Dual Hydrostatic Hydro Gear ZT3400 Integrated Transaxles Hand Lever Control Individual Drive Wheel Precision Friction Lock Lever Cruise Control with Neutral Park Position Dynamic Braking through Transaxles Internal Mechanical Cog Lock for each Transaxle Single Lever Control Transmission Release by Manual Dump Valve Transaxle Direct to Drive Wheel Specifications MODEL TRANSMISSION continued Transmission Fluid Factory Service Transmission Capacity Transmission Cooling Oil Filter Ground Travel Speed Forward m p h
67. m Not Visible Deck Height Adjustment Trigger Deck Height Lift Chai Tilt Bar Deck Due Deck Handle Caster Wheels Front View and Right Side View Component Identification Tailpipe Footrests Spread Axle Tail Wheel Left Hand Fuel Tank Fuel Pickup Drive Wheel and Cap Line Muffler Rear View and Left Side View Component Identification LH Transmission Steering Levers RH Transmission Control Arm Dampeners Control Arm LH Transaxle RH Transaxle LH Transaxle pm RH Transaxle Lockout Rod 3 Lockout Rod Parking Brake Clutch Battery Lever Clutch Overflow Hose Linkage O Fuel Tank Cap p Radiator Cap M Transaxle Oil GINS 2 Expansion Fuel Return Line 7 Reservoirs Fuel Pickup Line 65 I e Radiator and t Fan Fuel Tank 0 u i Enginaire Air Cleaner Air Filter af H 1 777 Cover Muffler Muffler Rubber Bumpers Cover Body Support Top View Body Raised Pay particular attention to any information labeled DANGER WARNING CAUTION IMPORTANT and NOTE in this manual When you see the Safety Alert Symbol A read understand and follow the instructions Failure to comply with safety instructions may result in person al injury The seriousness or degree of importance of each type of information is defined as follows An IMMEDIATE hazard that WILL result in severe personal injury or DEATH if wa
68. ment Step 7 Forward Speed Control Friction Adjustment 1 Place the FSC in NEUTRAL PARK position Loosen mounting screws and adjust switch up or down accordingly FSC Position with Levers Place the FSC in the full FORWARD position and pull both steering levers back the FSC lever should not move If the FSC lever moves back the friction needs to be increased Switch Closed FSC Switch in Neutral Actuator Arm With the steering levers held back move the FSC lever back from the FORWARD position With a proper amount of friction adjusted the FSC lever should move back with a slight amount f resistance friction If the FSC lever move Deck rt ment is stiff the friction needs to be de creased The FSC friction is increased or decreased by tightening or loosening the friction adjust ment nut Loosen or tighten the nut and check the control function until the conditions of both FSC Switch Adjustment steps 1 and 2 above are met Side View Through Chassis dig NS FSC Friction Adjustment Nut FSC Adjustment Friction Nut 72 Maintenance Instructions Blade Clutch PTO Clutch Engagement Belt Tension The clutch engagement and PTO belt tension are adjusted using the clutch link Initially after install ing new PTO belts after 10 hours and every 100 hours thereafter check and adjust for the dimen sions as shown in the PTO Clutch Engaged and PTO Clutch Disengaged illustrations
69. n remains at the blade tip e Examine ends of the blade carefully especially the intersection where the flat section of the blade turns up to form the wing tip refer to Mower Blade Pro file for Sharpening illustration in Sharpen Mower Blades instructions Since sand and abrasive ma terial can wear metal away in this area the blade should be replaced when metal thickness has worn to 1 16 in 1 6 mm or less When blades are operated over sandy soil and if blades are allowed to wear a slot may be worn into the wing tip of blade Eventually a piece of the blade may break off creating a serious potential for injury or damage e Check the blades for straightness by marking blade tip position inside the deck housing and then rotating the opposite end of the blade to the same position and comparing If the difference in blade tip track is more than 1 8 in 3 mm the blade is bent and should be replaced e Inspect the blade surface especially in formed areas for cracks Replace the blade if any cracks are found 65 66 Maintenance Instructions DO NOT try to straighten a blade that is bent NEVER weld a broken or cracked blade ALWAYS replace with a new blade to assure safety Reinstall the blades following procedure from Sharp en Mower Blades instructions If blades are re placed always use Walker original equipment blades to ensure safety and optimum performance The quality and performance of replac
70. nd inadequate preheat Consult the Yanmar Manual to check glow plug function After the engine starts make sure the oil pres sure light goes off If not stop the engine imme diately and find the cause of the problem Make sure the oil pressure light is off prior to engaging the mower blades and beginning operation ADJUSTING GROUND SPEED AND STEERING Learn to START STOP and MANEUVER the mower in a large open area If the operator has not operated a machine with LEVER STEERING OR DUAL TRAN SAXLES steering and ground operation should be learned and practiced until the operator is completely comfortable han dling the machine BEFORE ATTEMPTING TO MOW 34 Operating Instructions Keep feet on footrest at all times when the machine is moving Never operate the tractor without a deck or implement in stalled Beginning Recommendations are Learn operation of the mower in an open area away from buildings fences and ob structions Learn operation on flat ground BEFORE operating on slopes Start maneuvering the mower with SLOW engine speed and SLOW Forward Speed Control setting until familiar with all operat ing characteristics Remember it is not necessary to hold the steering levers forward a unique Walker feature always PULL on the levers for steering or for reverse motion of the mower Learn to operate the mower with your left handonthe steering levers and right hand on Forward Speed Control Th
71. ng especially in cold weather e Keep the battery fully charged e Match crankcase oil viscosity to the ambient tem perature allowing the engine to crank faster and start easier e For maximum engine life allow the engine to run at idle and cool down for one or two minutes before stopping the engine Cooling System e Fillthe cooling system with a pre mixed solution of 50 50 antifreeze ethylene glycol and distilled water IMPORTANT Solution must be pre mixed before putting itin the engine adding pure antifreeze into the radiator may cause damage to the engine by causing overheating YANMAR TIPS e Never mix different types colors of coolants e Maintain proper fluid levels in the radiator and overflow tank Air Cleaner System e Use only Enginaire air cleaner elements Aftermarket elements may not seal in the air cleaner housing allowing dirt to enter the engine Also aftermarket filters often skimp on the filtration media andrequire more frequent cleaning and replacement see following instructions e Use the air filter restriction gauge to indicate the need to service the air filter e DO NOT overservice or frequently disturb the air filter A dirty air filter actually cleans better than a new one Changing and cleaning the air filter too often can actually reduce filter efficiency and in crease the opportunity for traces of dust to enter the engine Waituntil the element really needs servicing a
72. on Points illus tration NOTE PTO universaljoints on the deck and tractor require routine lubrication after every 8 hours of run ning time NOTE The best way to lubricate the PTO tube half of the universal joint assembly is to remove it from the tractor See instructions for removing and installing PTO quick coupler refer to Deck Installation in Mow er Deck Installation on Tractor in the Assembly In structions 45 Maintenance Instructions LUBRICATION Lubrication No Lubrication No Location Type Places Location Type Places Clutch Arm Pivot Grease Transaxle Oil Reservoir Oil Throttle Control Cable Ends Oil Engine Dipstick oil Tail Wheel Caster Fork Pivot Grease Rear Wheel Pivot Grease Deck Caster Wheel Fork Pivot Grease Deck Caster Wheel Bearing Grease Front Deck Lift Pivot Grease Rear Deck Lift Pivot Grease Pivot Assembly Tilt Up Deck Grease Deck Support Arm Socket Grease Steering Lever Pivot Grease Rear Wheel Bearing Grease Deck to PTO Coupling Grease Engine Oil Filler oil Grease Spline Slide Area Rear Flanged Bearing Grease Deck Support Arm Pivot Grease PTO Belt Tightener Pivot Grease Universal Joint Tube Assembly Grease Parking Brake Pivot Grease FSC Lever Pivot Grease Throttle Control Pivot Oil Hydro Idler Arm Pivot Grease Universal Joint ShaftAssembly Grease Clutch Actuator Push Rod Grease Blade Spindle Grease Body Latch Pivot Oil PTO Clutch Lever Pivot Grease M2
73. on Tool photo 21 Assembly Instructions Quick Coupler Installation Tool PTO Tube Pull Back Spring Loaded Coupler Ring Quick Coupler Installation Tool Reaching under the tractor join the PTO tube to the PTO shaft align arrow decals Slide the PTO tube onto the spline shaft on the tractor PTO drive shaft JJ v Arrows on Shaft and Tube used to align when sliding together GTF 1 Grease Deck Support Arms Connection Mower Deck Installation PTO Shaft Connection Remove Installation Tool from coupler ring and make sure the ring has snapped securely on the spline shaft IMPORTANT DO NOT operate tractor with Quick Coupler Installation Tool installed IMPORTANT To prevent damage to the mow er make sure the PTO shaft assembly is se curely locked on the tractor with the locking balls fully seated in the groove and the ring in the full forward position refer to the Coupler Ring Locked Position photo After installa tion pull on the shaft to check for security Lock Deck On Spring Loaded Coupler Ring In Fully Forward Position Coupler Ring Locked Position Raise the mower body instead of lifting the front of deck and clip the counterweight springs to the receptacle on front of body Lower the body to tension the springs Refer to Deck Counter weight Spring Installation photo With the counterweight springs connected the weight on the deck caster wheels should
74. on the cutter blades i e as the engine pulls down in heavy cutting pull back on the FSC lever to reduce ground speed Adjusting ground speed helps maintain a balance between engine power and blade speed for high quality cutting action Stop ground travel by pulling both steering le vers backward to the NEUTRAL PARK position tractor not moving and then moving the FSC lever to the NEUTRAL PARK position NOTE Ifthe tractor creeps forward or backward with the FSC lever in the NEUTRAL PARK posi tion the transmission control needs to be adjust ed Referto ADJUSTMENTS for Step 3 Neutral Position Adjustment in the Maintenance Instruc tions ENGAGING THE MOWER 1 Setthe engine throttle at about 1 3 speed Do not attempt to engage the blade clutch at high engine speeds This will drastically short en drive belt life Use only moderate engine speed when engaging the blade clutch Engage the blade clutch by moving the blade clutch lever forward SLOWLY For disengage ment move the blade clutch lever backward SLOWLY Asafety interlock switch seat switch will cause the engine to stop ifthe blade clutch is engaged and the operator is not in the seat Thefunction ofthis switch should be checked by the operator raising off the seat and engaging the blade clutch the engine should stop If the switch is not working it should be repaired or replaced before operating the mower DO NOT disconnect the safety switches they are for
75. operating level below 7 PSI 48 kPa This light and warning horn will come on when the ignition is turned ON but should go off after the engine is started If the light fails to come on when the ignition switch is turned ON it would indicate a burned out bulb or the inline 7 amp circuit breaker could also be tripped If the light comes on during engine operation stop the engine immediately and correct the source of the problem before further engine operation Glow Plug Warning Light Circuit Breakers Oil Pressure Warning Light IMPORTANT Continued operation of the engine with an illuminated oil pressure warning light MAY cause severe engine damage if a low oil pressure condition exists Water Temperature Warning Light The water temperature warning light indicates that engine coolant temperature is above the safe oper ating limit and the engine is overheating If this light comes on there may be a problem with e Radiator cooling air flow material packed into radiator cooling fins clogged air intake screen e Low coolant quantity in cooling system e Engine alternator belt e Thermostat function Stop the engine and correct the problem before fur ther operation IMPORTANT Continued operation of the engine with an illuminated water temperature warning light MAY result in severe engine damage Battery Charge WS y Water Temperature Warning Light Mv Engine Warning Lights 29
76. perator hearing protection is recommended Wear a suitable hearing protective device such as earmuffs or earplugs Keep all protective shields and safety de vices in place lf a protective shield safety de vice or decal is damaged unusable or missing repairorreplaceitbefore operating the machine Be sure interlock switches are functioning correctly so the engine cannot be started un less the Forward Speed Control lever is in the NEUTRAL PARK position and the PTO clutch is the DISENGAGED position Also the engine should stop if the operator lifts off the seat with either the Forward Speed Control FSC out of the NEUTRAL PARK position or the PTO clutch in the ENGAGED position NOTE There is a 1 2 second time delay func tion on the seat switch to avoid engine power interruption when driving over bumps Handle diesel with care a Usean approved fuel container b Never add fuel to a running engine or hot engine allow hot engine to cool several minutes Keep matches cigarettes cigars pipes open flames or sparks away from the fuel tanks and fuel container Always fill the fuel tank s outdoors using care Fill to about one inch from the top of the tank Use a funnel or spout to prevent spilling Replace the machine fuel cap s and con tainer cap securely and clean up any spilled fuel before starting the engine Never attempt to make any adjustments while the engine is running except where
77. plates 3 Replace filler caps IMPORTANT DO NOT overfill the battery Electro lyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion Cleaning the Terminals If battery terminals are corroded remove battery from the mower Using a wire brush remove corro sion with a solution of one part baking soda and four parts water Rinse with clean water Coat the terminals with petroleum jelly or terminal protector spray to retard further corrosion CHECKING SERVICING Charging the Battery BATTERIES PRODUCE EXPLOSIVE GASES e Charge the battery in a well ventilated area so that gases produced while charg ing can dissipate e Keep sparks flames and smoking ma terials away from the battery at all times e Make surethe battery cap vents are open check manifold vent on each cap e Make sure the battery charger is un plugged before connecting or disconnect ing cables to the battery Check the battery charge by measuring the specific gravity of electrolyte if specific gravity is less than 1 225 the battery will need to be charged as follows 1 Charge the battery at 15 amps for 10 minutes DO NOT exceed 20 amps maximum recom mended charging rate Charge until specific gravity is at least 1 250 Total charging time should not exceed one 1 hour After charging the battery use distilled water to adjust the electrolyte level to the bottom of the vent wells 1 4 to 1
78. r Flex Coupling Removal 63 64 Maintenance Instructions Loosen the alternator mounting pivot bolt and the alternator bracket tensioner bolt Pivot the alternator as shown to relax and remove belt Alternator Bracket Tensioner Bolt Pivot Bolt Alternator Belt Alternator Belt Loose 2 Reverse the procedure to install the belt a Adjust and check the belt tension by refer ring to CHECKING SERVICING the Alter nator Belt Tension in this section Reinstall the flex coupling center section and rubber iso mounts Alternator Bracket Pivot Bolt Alternator Belt Alternator Belt Tight REPLACING REPAIRING NOTES e Inspect the rubber iso mounts P N 2351 1 for cracking or signs of deterioration and replace as needed Good preventative maintenance would recommend replacing the rubber mounts at the same time as the alternator belt When installing the bolts into the rubber iso mounts make sure the flat washer and star lock washer are in place on each bolt Use Loctite 242 Blue Threadlocker compound or equivalent on each bolt Install all twelve 12 ofthe rubberiso mount bolts and tighten only finger tight before tightening any bolts with a wrench Torque bolts to 22 ft lb 30 N m Inspect for cracks or deterioration Use Loctite 242 Blue compound or equivalent Torque bolts to 22 ft lb 30 N m Flex Coupling Maintenance c Reinstall the flex coupler guard The flex co
79. r initial operation Grass Buildup in Mower Housing Before raising or removing the mower deck for cleaning stop the engine remove the ignition key and disconnect the electrical plug on the fuel shut off solenoid Release hood latch assembly 2 and remove footrest Rotate locking arms upward on each side of the carrier frame to release carrier frame for tilting action 3 4 CLEANING Locking Arm Rotation Install tilt bar into front of deck Tilt Bar Installed Using the tilt bar raise deck to the TILT UP posi tion and insertthe deck hook into the tilt up latch on the tractor body Maintenance Instructions n Tilt Up Hook and Latch Connected Deck Secured in Tilt Up Position Clean grass buildup underneath the deck using a pressure washer and scraper if required NOTE If the buildup is severe it may be easier to clean the deck by removing the deck assembly from the tractor and standing the deck assembly on its nose NOTE While some degree of material buildup in the mower deck housing can be tolerated a point is finally reached where cutting quality deterio rates and clogging begins to occur because of too much buildup on the baffling and housing Do not operate the mower with deck in tilt up position Do not move the tractor with the deck in the tilt up position Lower the deck to the normal operating position and rotate locking arms downward Remove tilt bar and store on carri
80. rained techni cian can activate the battery safely DO NOT attempt to activate the battery unless you are experienced in battery service work The following activation and charg ing instructions are provided for use by a trained battery technician Battery electrolyte is a poisonous and cor rosive sulfuric acid solution e Avoid spillage and contact with skin eyes and clothing causes severe burns e To prevent accidents wear safety gog gles and rubber gloves when working with electrolyte e Neutralize acid spills with baking soda and water solution To fill activate battery with electrolyte if battery has been shipped dry 1 Remove the battery hold down bar disconnect the battery cables and lift the battery out of the tray IMPORTANT Battery must be removed from the mower before filling with electrolyte IMPORTANT Obtain and use only battery grade sulfuric acid electrolyte with a 1 265 spe cific gravity to activate the battery DO NOT use water or any other liquid during initial activation Remove the filler caps and carefully fill each cell until the electrolyte is just above the plates After the battery is filled with electrolyte replace the filler caps and charge the battery Refer to Battery Charging 19 Assembly Instructions Battery Charging Mower Deck Assembly Deck Caster Wheels Installation AX DANGER 1 Remove the bolts and washers from each deck BATTERIES PRODUCE EXPLOSIVE GASES
81. rning is ignored and proper safety precautions are not taken A POTENTIAL hazard that COULD result in severe personal injury or DEATH if warning is ignored and proper safety precautions are not taken Possible hazards or unsafe practices that MAY result in MODERATE personal injury or property damage or machine damage if warning is ignored and proper safety pre cautions are not taken IMPORTANT Identifies mechanical information demanding special attention since it deals with the possibility of damaging a part or parts of the machine NOTE Identifies information worthy of special attention Safety Instructions Before Operating Walker Manufacturing cannot predict every poten tially dangerous situation Therefore items labeled as such in this manual do not cover all conceivable situations Any person using procedures tools or control techniques not recommended by Walker Manufacturing must take full responsibility for safety The Walker Rider Lawnmower has been designed with many safety features to protect the operator from personal harm or injury However it is necessary for the operator to use safe operating procedures at all times Failure to follow safety instructions con tained in this manual may result in personal in jury or damage to equipment or property If you have any questions concerning setup opera tion maintenance or safety please contact your au thorized Walker Mower dealer or call Walker Manu
82. s indicated by the air filter restriction gauge e Do frequently check the Turbine Precleaner located in the end cap of the air cleaner assembly for free movement ofthe internal fan Shine light into end cap to verify movement of fan with engine running e Whentheairfilter element is removed or replaced make sure all dustis cleaned out ofthe air cleaner housing and hose Use a damp cloth and wipe the interior of the canister and hose clean a little dirt left here will be sucked into the engine and reduce en gine life When the filter is reinstalled make sure the elementis held tight and straight in the canister for proper seating and sealing e Periodically check the air intake hose for cuts nicks etc and the hose clamps for tightness Cil e Useany top quality oil with an API classification of CD or greater DO NOT use oil that is rated for gaso line engines only API SE SF as this will cause prob lems with a diesel engine e Single viscosity or multi viscosity oils may be used as specified by the Yanmar Operation Manual using the viscosity recommended to match ambient tem perature range for the engine operation This will aid starting in cold weather and assure proper lubrica tion in hot weather e Use only Yanmar oil filters Aftermarket filters may not seal properly and or have the incorrect pressure relief valve for proper lubrication Maintenance Instructions LUBRICATION DO NOT attempt to lubricate t
83. s manual covers Model MBSY with the Yanmar 23 6 HP diesel engine All shields and guards must be in place for the proper and safe operation of this machine Where they are shown removed in this manual it is for illustration purposes only Do not operate this machine unless all shields and guards are in place Specifications given are based on the latest information available at the time this manual was pro duced fora tractor with standard equipment Some optional equipmentsuch as headlights and ROPS are shown in photos and diagrams in this manual and may affect the standard specifications listed Walker Mfg Co is continually striving to improve the design and performance of its products We reserve the right to make changes in specifications and design without thereby incurring any obli gation relative to previously manufactured products Sincerely WALKER MANUFACTURING COMPANY Bob Walker President Table of Contents General Information HIGHLIGHTED INFORMATION GLOSSARY IDENTIFYING NUMBER LOCATIONS ENGINE SERIAL NUMBER LOCATION SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS Specifications Component Identification Safety Instructions BEFORE OPERATING OPERATING MAINTENANCE SAFETY CONTROL AND INSTRUCTION DECALS Assembly Instructions SETUP INSTRUCTIONS Battery Service Wet Battery Service Dry Battery Service Battery Charging Mower Deck Assembly
84. safety switches both during engine starting and with the operator leaving the seat with tractor moving forward or with mower blades en gaged CHECK AND CLEAN GRASS BUILDUP UNDERNEATH MOWER DECK Refer to CLEANING the Grass Buildup in Mower Housing in Maintenance Instructions for deck tilt up and deck cleaning information Never operate cutter blades with deck in raised position because it is hazardous The tilt up deck can be secured in the raised position by disengaging the locking arms on each side of the carrier frame and inserting the deck hook into the tilt up latch on the tractor body Before operating the tractor make sure to re engage the locking arms after lowering the deck to the normal operating position B Tilt Up Hook and Latch Connected Deck Secured in Tilt Up Position Do not operate machine with locking arms disengaged Do not operate the mower with deck in tilt up position Do not move the tractor with the deck in the tilt up position CHECK MOWER BLADE CONDITION SHARPNESS BALANCE AND SECURITY OF MOUNTING The blade mounting bolt should be tightened to 64 ft Ib 87 N m If blade sharpening is required refer to CHECKING SERVICING for Sharpen Mower Blades in Maintenance Instructions ADJUST MOWER CUTTING HEIGHT IF REQUIRED Refer to ADJUSTING CUTTING HEIGHT in Oper ating Instructions PERFORM ANY ADDITIONAL PROCEDURES called for on the MAINTENANCE SCHEDULE CHART in Maintenan
85. shouldering both rods in the chassis notch area The mower will freewheel with the rods in the LOCKOUT position The levers must be in the highest position to completely unlock the trans missions Hydro Lockout Rod Freewheel Position After moving the mower release the rods plac ing them in the normal OPERATING position The transmission rod ends should be completely retracted against the chassis otherwise opera tion of the transmission maybe erratic RECOMMENDATIONS FOR MOWING Do not mow around overhanging tree branches or bushes at the same height as the operator s torso and head where inad vertent contact may cause injury Avoid Low Hanging Branches IMPORTANT Operate the engine at full throttle when mowing to allow the engine to produce full horsepower and to increase efficiency of the engine cooling system e Keep the mower deck clean e Mow with sharp blades A dull blade tears the grass resulting in poor lawn appearance and uses extra power slowing the mowing speed e t is preferable to cut grass when it is dry and not too tall Mow frequently and do not cut grass too short For best appearance cut off 1 3 or less of existing grass height Operating Instructions e When mowing operate the engine at full throttle for the best cutting action Mowing with a lower en gine RPM causes the mowing blade to not cut clean and tear the grass The engine is designed to be op
86. t or tube should be replaced A worn U joint can cause vibration and extensive damage to the PTO and the whole machine Blade Brake Action It is important to check and maintain blade brake action for safe operation of the ma chine Check the function of the cutter blade brake by en gaging the blade clutch PTO operating the engine at full throttle then disengaging the clutch and mea suring how quickly the blades stop Watch the rota tion of the blade drive shaft as a visual indication that movement has stopped If the brake is working properly all rotation will stop five 5 seconds af ter disengagement ofthe clutch Ifthe brake system malfunctions blades do not stop in five 5 seconds adjust or repair the brake before operating the mower Contact your Walker dealer for this service or refer to the Walker Service Manual Maintenance Instructions Safety Switch System It is important to check and maintain the safety switch system for safe operation of the machine There are three 3 safety interlock switches on the tractor Seat Switch FSC Neutral Park Switch and PTO Switch NOTE There is a 1 2 second time delay function on the seat switch to avoid engine power interruption when driving over bumps If any ofthe following conditions occur during starting or operating a safety interlock switch may be mal functioning Contact your Walker dealer for trouble shooting and or replacement e With an opera
87. tep 5 Straight Tracking Adjustment 1 Sit in the seat start the engine set throttle at full speed and with the FSC in the NEUTRAL PARK position check for movement of either drive wheel if either wheel moves backward or forward refer to the Step 3 Neutral Position Adjustment and readjust Check for straight ground tracking on a level sur face with hands off the steering levers Setthe FSC at several different speeds and observe if the mower moves in a straight line use cement joint or other line on ground for reference If travel is not straight shorten the control rod on the slow side by turning the adjuster nut clock wise If straight tracking and neutral can not be achieved turn the adjuster nut counterclockwise until neutral can be achieved Lengthen the control rod of the faster side by turning the adjuster nut counterclockwise to match the slower side while maintaining the neu tral position If the forward travel is straight throughout the speed range except at maximum speed place the FSC in full FORWARD turn the set screw in the Transmission Control Arm of the faster side in until it contacts the hydro stud Turning the set screw in slows the wheel Turn the set screw in an additional 1 8 turn Recheck for equal full forward speed Adjust this set screw until equal full forward speed is achieved Tight en the jam nut Maintenance Instructions ADJUSTMENTS Step 6 FSC Switch Neutral Adjust
88. th the LH lever Levers should sit parallel to each other Lever Alignment ADJUSTMENTS Adjustthe position of the RH lever by turning the stop bolt in the Speed Control Actuator in or out Turning the stop bolt in will make the RH lever move back and turning it out will make it move forward Tighten the locknut Stop Bolt Location Step 2 Steering Handles Adjustment 1 An adjustment range of approximately 3 in 76 2 mm is available on the steering handles the handles can be adjusted forward or aft depending on the arm length of the operator The handles can be adjusted by loosening the locknut at the pivot point and the locknut holding the handle in position in the adjustment slide Adjust the handles into the most comfortable position and tighten both locknuts Steering Handles Adjustment Maintenance Instructions Step 3 Neutral Position Adjustment 1 With the Forward Speed Control FSC in NEU TRAL PARK the lever should be straight up Adjust by loosening the jam nuts on the FSC Rod and turn the rod to attain the straight up position Tighten the jam nuts FSC Position ADJUSTMENTS FSC Lever Adjust 2 Theinitial adjustment for neutral is to loosen the jam nuts on each end ofthe Control Rod and turn the rod to achieve a measurement of 5 in 127 mm between the jam nuts Be sureto tight en jam nuts before making the measurement Block the tractor up so the drive tires are off the ground
89. the operator s protection IMPORTANT DO NOT engage the blade clutch when transporting the mower across drives side walks loose materials etc DO NOT engage the blade clutch with the PTO shaft disconnected the mower deck removed from tractor Blade Clutch Engaged 35 Operating Instructions Blade Clutch Disengaged If the cutting blades strike a stationary ob ject while mowing stop the mower im mediately disconnect the electrical plug on the fuel shut off solenoid lift the deck and inspect the deck and blades thor oughly for damage Also make sure the blade retaining bolts are torqued to 64 ft lb 87 Nem STOPPING THE MACHINE 1 Pull the steering levers to the NEUTRAL PARK position and then move the FSC lever backward to the NEUTRAL PARK position Slow the engine to idle put the throttle in the IDLE position Disengage the blade clutch IMPORTANT DO NOT disengage the blade clutch with high engine speed above 1 2throttle since the brake action on the blade drive will cause increased wear of the brake band A brake stops the cutter blades from free wheeling within five 5 seconds after dis engaging the clutch If the brake system malfunctions and the blades do not stop within five 5 seconds the brake should be repaired or replaced before operating the mower Contact your Walker dealer 4 Turn the ignition switch OFF Remove the key from the ignition switch when leaving the mower unatt
90. tor in the seat the engine starts with the Forward Speed Control FSC and or the PTO engaged e With an operator in the seat the engine starts but dies soon after the Forward Speed Control FSC or PTO is engaged e Without an operator on the seat the engine starts and continues to run with the Forward Speed Control FSC and or PTO engaged e With an operator in the seat the Forward Speed Control FSC and PTO disengaged and horn works but the starter is not engaging CHECKING SERVICING Forward Speed Control Friction Lock The FSC friction lock is designed to hold the select ed forward travel speed when the steering levers are moved and yet the friction is not too heavy to make moving the FSC control difficult too much friction The procedure for checking the FSC friction lock is as follows 1 Place the FSC in the full FORWARD position and pull both steering levers back the FSC lever should not move If the FSC lever moves back when the steering levers are pulled back the friction needs to be increased With the steering levers held back move the FSC lever back from the FORWARD position With a proper amount of friction adjusted the FSC lever should move back with a slight amount of resistance friction If the FSC lever move ment is stiff the friction needs to be de creased If the FSC friction lock needs to be adjusted refer to ADJUSTMENTS for Step 7 Forward Speed Control Friction Adjustment in this s
91. tting and Oil Point Lubrication __ Transaxle Oil and Filter Change CLEANING Engine Air Cleaner System Turbine Precleaner Enginaire Air Cleaner Engine Cooling System Radiator Screen and Cooling Fins Flushing Radiator and Changing Coolant Grass Buildup in Mower Housing Transaxle Housing Table of Contents CHECKING SERVICING Engine Cooling System Coolant Level Alternator Belt Tension Security of Air Filtration Components Battery Electrolyte Level Cleaning the Terminals Charging the Battery Tire Pressure Wheel Nuts Torque Sharpen Mower Blades Drive Belts Fuel Lines and Clamps Radiator Hoses and Clamps PTO U Joints Blade Brake Action Safety Switch System Forward Speed Control Friction Lock REPLACING REPAIRING Drive Belts PTO Belt Ground Drive Belt Alternator Belt FuelFilter Mower Blades Replacing Deck Drive Belt ADJUSTMENTS Transmission Control Steering Lever Position Adjustment Steering Handles Adjustment Neutral Position Adjustment Full Forward Speed Adjustment Straight Tracking Adjustment FSC Switch Neutral Adjustment Forward Speed Control Friction Adjustment Blade Clutch PTO Clutch Engagement Belt Tension Clutch Disengagement Brake Action Idler Pulley Maximum Travel Adjustment Blade Brake Band Adjustment Warranty General Information HIGHLIGHTED INFORMATION Walker Manufac
92. turing recommends that any service requiring special training or tools be performed by an authorized Walker Mower dealer There are several general practices to be aware of in the area of safety Most accidents associated with the operation or maintenance of a Walker Mower are caused by disregarding basic safety precautions or specific warnings Such accidents in most cases can be prevented by being aware of the dangers present Information of special importance has been high lighted in bold type in this manual Refer to Safety Instructions for the meanings of DANGER WARN ING CAUTION IMPORTANT and NOTE GLOSSARY There are many terms that are either unique to this equipment or that are used as acronyms The fol lowing terms and their definitions will help while using this manual e DECKisthe mowing attachment mounted onthe front of the tractor which includes the carrier frame deck housing blade spindles and cutter blades FORWARD SPEED CONTROL FSC controls the maximum forward speed of the tractor functioning as a cruise control GROUND DRIVE refers to the dual transaxles which drive the main wheels LEFT HAND LH refers to the left hand side of the tractor when the operator is seated facing forward in the tractor seat POWER TAKE OFF PTO transmits engine power to run the cutter blades REAR DISCHARGE RD discharges mowed material from the back of the mower deck RIGHT HAND RH refers to the right hand si
93. uest customer will make the defective part available for inspection by Walker and or return the defective part to Walker transportation charges prepaid All parts and compo nents of the Walker Mower are covered by this warranty except the following components which are warranted separately by their re spective manufacturers Yanmar Engine Hydro Gear Transaxles Battery Tires The available warranties covering these items are furnished with each mower Walker does not assume any warranty obligation liability or modification for these items which are covered exclusively by the stated warranty of the respective manufacturers noted above WHAT THIS WARRANTY DOES NOT COVER A This warranty does not cover defects caused by depreciation or damage caused by normal wear accidents improper maintenance improper use or abuse of the product alterations or failure to follow the instructions contained in the Operator s Manual for operation and maintenance The customer shall pay any charges for making service calls and or for transporting the mower to and from the place where the inspection and or warranty work is performed HOW TO OBTAIN SERVICE UNDER THIS WARRANTY Warranty service can be arranged by contacting the dealer where you purchased the mower or by contacting Walker Manufacturing Company 5925 East Harmony Road Ft Collins CO 80528 Proof of the date of purchase may be required to verify warranty coverage WARRANTY LIMITATION A
94. upler guard must be in place before running the engine Maintenance Instructions Fuel Filter Model MBSY has two 2 fuel filters Replace both the in line filter and the Yanmar filter element every 400 hours of operation Fuel Filter Water Separator Fuel Filter Fuel Filter Location IMPORTANT Replace the fuel filters only in a clean area where the fuel line and connections will not be contaminated by dust and dirt 1 Close the Yanmar fuel filter cock 2 Removeandreplacethein line filter expand and slide clamps on either side of the filter away from filter and pull fuel lines off filter Loosen the ring screw on the Yanmar filter assembly remove the filter pot and filter element Clean the filter pot and reassemble the filter assembly with a new filter element use only a Yanmar replacement filter Open the fuel filter cock REPLACING REPAIRING Mower Blades Mower blades are removed and remounted as de scribed in the Sharpen Mower Blades instructions refer to CHECKING SERVICING to Sharpen Mow er Blades in this section During the course of sharpening and inspecting mower blades if there are any of the following conditions of wear or dam age blades should be replaced for reasons of safe ty and performance of the machine e An excessive amount of the flat section of the blade has been ground away removed when the blade is sharpened Replace the blade when less than a 3 4 in 19 mm flat sectio
95. ver hazards o Be aware there is no roll over protection when the roll bar is lowered o Raise and lock the ROPS roll bar as soon as overhead clearance permits e Check for overhead clearance i e branches doorways electrical wires before driving under any objects and be careful to avoid contact To Lower the ROPS Roll Bar Loosen the two 2 tension knobs Remove the two 2 hitch pins Remove the two 2 locking pins Lower the roll bar Replace the locking pins and secure them with the hitch pins To Raise and Lock the ROPS Roll Bar Remove the two 2 hitch pins Remove the two 2 locking pins Raise the roll bar to the upright position Install the two 2 locking pins and secure them with the two 2 hitch pins Tighten the two 2 tension knobs to prevent the roll bar from rattling Locking Pin Locking Pin Tension Knobs Roll Over Protection System ROPS 31 32 Operating Instructions The Forward Speed Control also Establishes the Neutral Park Position of the Steering Levers LEFT WHEEL RIGHT WHEEL FORWARD SPEED STEERING LEVER CONTROL LEVER FSC 2 Full Forward Forward Position No Control Change m 3 Ground Speed Position Neutral Park Position Intermediate Ground Speed Position Reverse Drive Wheel Motion Position Neutral Park Position Fast Throttle Position D i EL EE 2
96. x 54 Service Mower Blades X 57 Check Function of Warning Lights and Horn x 25 Lubricate Grease Fittings and Oil Points x 45 Check Battery Electrolyte Level X 56 Check Transaxle Oil Level in Reservoir x 45 Check Tire Pressure X 56 Check Drive Belts Engine Alternator 58 Engine PTO Ground Drive Check Operation of Safety Interlock Switches x 59 Check Operation of Turbine Precleaner Fan x 49 Check Air Filter Element X 50 Change Engine Crankcase Oil x 44 Check Engine Alternator Belt Tension x 55 Check Blade Brake Action X 58 Check Security of Drive Tire x 24 Mounting Nuts 75 to 85 ft Ibs Check FSC Friction Lock X 59 Change Engine Oil Filter X 44 Check Radiator Hoses and Clamps x 58 Change Transaxle Oil and Filter x 48 Replace Fuel Filters 2 Clean Water Separator x 65 Replace Air Filter Element x 50 and Dust Ejection Valve Check Fuel Lines and Clamps x 58 Flush Radiator and Change Coolant x 52 Service Battery x 56 Check PTO U Joints for Wear Looseness X 58 Adjust Engine Intake Exhaust Valve Clearance x A Replace Radiator Hoses and Clamps X 58 Replace Fuel Lines and Clamps X 58 Lap Engine Intake Exhaust Valve x Seats if required More often in extremely dusty or dirty conditions PORTANT TES FOR CARE CAUTION When performing maintenance with the tractor body raised a safety prop should be installed from back of body to chassis frame fail safe protection in case of failure of body lift support
97. y Latch Steering Levers Blade Clutch PTO 4 Wag Front Body Ignition Latch Switch _ Operating Controls Operating Instructions Engine Throttle The throttle control lever red knob is located on the left side of the seat and is used to control engine speed Moving the lever forward toward the FAST position increases engine speed moving it back ward toward the IDLE position decreases engine speed Throttle Location Body Latch The tractor body hinges forward for maintenance access and is latched down in the OPERATING position To raise the body pull back on body latch and lift body from the rear of the machine Rear Body Latch Forward Speed Control FSC Forward Speed Control FSC has two functions One is to set forward travel speed and the other is to establish the NEUTRAL PARK position When the FSC lever is moved into the FORWARD position a friction lock holds any forward speed setting from 0 to 10 mph 0 to 16 km h The ground speed is pro portional to the lever position the further the lever is advanced forward the faster the tractor moves It is not necessary to hold the FSC in position since the friction lock maintains the selected lever position Pulling back on the steering levers overrides the FSC setting and slows or stops forward travel Re leasing the steering levers allows the tractor to re sume forward travel at the speed set by the FSC le ver To stop and park the machine the
98. ype Width of Cut Cutting Height Height Adjustment Blade Size Number of Blades Direction of Rotation Viewed from top of deck Deck Suspension Maximum Blade RPM Maximum Blade Tip Speed MBSY 927 Ib 420 kg 1317 Ib 597 kg 1372 Ib 622 kg Walker P N 2230 Matched Set of 3 Walker P N 2248 Contour Molded with Nylon Backed Vinyl Cover and Integral Foam Cushion Suspension 3 16 Plate Steel 14 Gauge Sheet Steel 11 Gauge Steel DRD52 Belt Driven Rear Discharge 52 in 132 cm DSD60 Belt Driven Side Discharge 60 in 152 cm 1 to 5 in 3 to 13 cm 17 Positions 1 4 in 0 6 cm Increments 18 4 in 47 cm 20 5 in 52 cm 3 Clockwise Torsion Flex Frame with Caster Wheels and Counterweight Springs 3840 3330 18500 ft min 5640 m min 17870 ft min 5460 m min NOTE The manufacturer reserves the right to make changes in specifications shown herein at any time without notice or obligation The specifications listed are for a standard configuration tractor and may change with the addition of optional equipment Component Identification NOTE Control Identification shown in Operating Instructions section Body Tilt Up Latch Counterweight Springs and Protective Covers Friction Adjustment tw Not Visible gt Deck Support J 1 Arm Forward Speed C gt Footrests Control FSC d Tilt Up Hook xs oe KO Height Adjustment Arm Cutting Height Adjustment Deck Support Ar

Owners - Walker Mowers

Contents

Download Pdf Manuals

Related Search

Related Contents