National Mower HYDRO HY70OM-8/992 User's Manual
Contents
1. 12 Dropil dihNeedlevakve 12 Interlock Switches 12 uuu 13 0 13 Traction Pedal 13 Reel Control Clutch 13 14 14 14 10 El UE 15 Feel inte GA NEE 15 Backlapping Procedure 15 16 Ginding Procedure 7777 7 ore A NEUES 16 17 17 Assembly and Disassembly 880 17 17 18 Charging a Battery 18 Bed Knife Replacement n nn0nnnannnannnennnnnnennnnnnnenrnnnnnnrnnrrsrrrsnrnnrrnnrnne 18 alg M 18 uu u E 18 zie NEE 18 ele 19 Hydraul Oll m 19 eiiean 20 Handle Bar Removal 20 Jumper Cables MEER ERREUR 20 4 HY700M 8 99 NATIONALE HYDRO 70 TRIPLEX M 20 xin yop 20 Belt Re2. No Description Qty Item No Description Qty 1 302076 ARM Lift 1 15 03630 PULLEY 3 2 07458 CHAIN Three Wheel Drive 5 Links 1 16 04012 KEY Woodruff 3 2 302325 SUPPORT Bearing 6 17 302172 ARM Push includes 21 1 4 06127 BLOCK Bearing 12 18 302227 SHAFT 1 5 302161 STRAP Lift 1 19 05073 SHAFT Push Arm 1 6 04540 SPRING Beltldler 1 20 06125 BEARING Pillow Block 2 T 302070 FRAME 1 21 06032 BUSHING 4 8 302082 ARM Idler 1 06124 BEARING Flange 1 9 07365 CHAIN 4 23 302360 SCRAPER Pulley 3 10 03631 PULLEY Idler 1 24 302114 BRACKET 1 11 06038 BEARING Thrust 3 25 04073 CLEVIS AND PIN 2 12 302169 ARM Push Includes 21 1 26 302702 ROD Lift Link 1 19 03629 PULLEY 1 27 07265 CHAIN 6 Links 1 14 302455 BAR Lift 1 28 302611 SPACER 2 Three Wheel Drive OHGAH 02 6 FRONT CUTTING UNIT ASSEMBLY Item PartNo Description Qty 1 302840 SIDEPLATE L H 1 302841 SIDEPLATE R H 1 2 03606 PULLEY 1 2 302827 BRACKET Rear Roller L H 1 302826 BRACKET Rear Roller 1 4 302336 SHAFT 1 5 302360 SCRAPER Pulley 1 6 302601 SLEEVE Rubber 1 7 04521 SPRING 1 8 04077 END Rod 2 9 04071 RING Snap 1 10 02644 WASHER 3 11 302639 CROSSLINK 1 12 302171 PULL ARM includes 13 1 13 06035 BUSHING 1 14 302185 PLATE Side R H 1 302186 PLATE Side L H 1 19 05072 SPACER 1 16 05080 SHAFT Front Roller 1 17 302846 ADJUSTER Roller Shown 2 302847 ADJUSTER
3. 5 Declaration Of Conformity 2 Safe Operating Practices 6 5 Receipt of Shipment a TT 5 ONS 6 9 Engine Specifications 6 Ree Ee Te uuu 6 Vehicle Specifications 6 211 saya 6 5 6 Weight and Dimensions 6 6 Disposal T Noise Emission and Vibration T Be 7 8 Assembly Instructions E 9 10 General Information 11 12 ipe ww 11 Traction Drive Trall RR UU TT 11 piclR ge 11 Je gite ge D 11 11 11 ailes 11 olo uu n au 12 Throttle Lever 12 Traction Pedal MESE 12 WOW and Lift Treadle 12 Free Wheeling Valve
4. w 1 eet 2 m A Z a ae NATIONAL HYDRO 70 TRIPLEX OWNER S MANUAL Includes Assembly Maintenance amp Parts Lists For Serial Numbers 1586 amp Up NATIONAL MOWER CO 700 Raymond Ave P O Box 14299 St Paul Minnesota 55114 0299 U S A Phone 651 646 4079 Fax 651 646 2887 HYD700M 8 99 DECLARATION OF CONFORMITY according to Directive 89 392 EEC We NATIONAL MOWER COMPANY Name of supplier 700 Raymond Avenue St Paul Minnesota 55114 U S A Full address of the manufacturer authorized representative in the community must also give the business name and address of the manufacturer declare under our sole responsibility that the product NATIONAL HYDRO 70 TRIPLEX MOWER Make and model to which this declaration relates corresponds to the relevant basic safety and health requirements of the Directive 89 392 EEC if applicable and to the requirements of other relevant Directives 292 162 294 349 Title and or number date of issue of the other Directives If applicable For the relevant implementation of the safety and health requirements mentioned in the directives the following standard s and or technical specification s has have been respected ANSI 71 4 Title and or number and date of issue of standard s and or technical specification s 8 1 99 Do filo Ib Place and date of issue Name function a
5. The HYDRO 70 has a safety switch mounted directly to the seat bottom The switch requires no adjustment Ire If wires should become disconnected from the seat switch it prohibits other safety features from working properly avoid possible serious bodily injury before performing any adjustments maintenance or lubrication place all controls in Neutral lower the mowers to the ground engage parking brake turn ignition switch off and remove key 7 5 HEIGHT OF CUT ADJUSTMENT The height of cut is variable and adjusted by moving the front and rear roller brackets to the desired height It is important to get all rollers adjusted to the same height keeping the bed knife parallel to the ground so that there will be uniform cutting on the entire width of the mower Do not adjust rollers by sight After loosening adjusting nuts on each side of the reel assembly place a gauge plate under the bedknife and roller measuring the distance between bedknife cutting edge and the rollers Adjust front and rear rollers equally and insure that the bottom of the bedknife is parallel with the ground After height of cut setting is determined re tighten roller adjustment nuts A height of cut tool Part 070009 shown below complete with instructions is available through the National Mower Parts Department ROLLERADJUSTERS BED BAR ROUND HEAD SCREW HEX HEAD CAPSCREW INSTRUCTIONS 1
6. Item Part No Description Qty 1 302719 VALVE Needle 1 5 302723 CARTRIDGE Valve 3 WD 1 2 302720 SEAL KIT 1 6 302724 COIL Valve 3 WD 1 3 N A BLOCK Valve 1 302721 SPOOL Valve 3WD 1 4 302722 SEAL KIT 3 WD 1 50 HY700M 8 99 NATIONALE HYDRO 70 TRIPLEX ONE YEAR LIMITED WARRANTY For the period of one year from the date of purchase 45 days if the product is used for rental purposes National Mower Company will repair or replace free of charge for the original purchaser any part or parts found by inspection to be defective by our Factory Authorized Service Station or by the Factory at St Paul Minnesota to be defective in material or workmanship or both All transportation charges on parts submitted for repair or replacement under this warranty shall be paid for by the purchaser This warranty does not include engines engine parts or tires which are covered under separate warranties furnished by their manufacture or supplier All service under this warranty will be furnished and performed by our Factory Authorized Service Stations THERE IS NO OTHER EXPRESS WARRANTY IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FORA PARTICULAR PURPOSE ARE LIMITED TO ONE YEAR FROM PURCHASE OR 45 DAYS IF THE PRODUCT IS RENTED AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED THE ABOVE REMEDY OF REPAIR AND REPLACEMENT OF DEFECTIVE PARTS IS THE EXCLUSIVE REMEDY FOR
7. Preparation of bar Position round head capscrew to desired height of cut Measure from flat surface of bar to the underside of round head screw Lock round head screw in position with wing nut Position hex head capscrew 1 8 less than desired height of cut Measure from flat surface of bar to the top of the hex head capscrew Lock hex head capscrew in position with wing nut 2 Setting height of cut Hook round head screw on top edge of bedknife and rest hex head capscrew against bedbar Adjust front and rear roller adjusters so that the rollers contact bar Check roller placement for the full length of the cutting unit by moving the bar side to side while still located on the bedknife bedbar to achieve consistent height of cut the full width of the cutting unit Lock roller adjusters in place HY70OM 8 99 7 6 REEL TO BEDKNIFE ADJUSTMENT The reel is adjusted to a fixed position bedknife This makes a more rugged and stable frame retaining adjustmentlonger To adjust the reel to bedknife contact turn the hex adjuster on each side of the reel down Proceed slowly and do not over adjust about 1 8th of a turn on each side Do not over tighten A too tight reel will wear much faster The reel should wipe or lightly touch the bedknife By using paper strips held between reel and bedknife check to see that blades are cutting the paper all the way across DANGER Use heavy gloves and be careful blades are sharp
8. 1 35 302706 GUIDE Hose 1 36 ENGINE AND PARTS 1 Order Through Briggs amp Stratton OHGAH 02 HY70OM 8 99 G TRACTIONPEDAL AND PUMP ASSEMBLY No Description Qty Item No Description Qty 1 09128 PEDAL Traction 1 21 302479 ARM 1 2 07263 NON SKID Pedal 1 22 06129 BEARING Ball 1 3 302533 SWITCHASSEMBLY 1 29 04075 END 2 4 07248 1 24 08068 1 5 07275 CYLINDER Lift 1 25 04539 SPRING 1 6 07272 PUMP 1 26 302480 CONTROL Pump 1 7 302156 PEDAL Lift 1 2 04069 KEY 1 8 07264 NON SKID Pedal Left 2 28 06126 BLOCK Bearing 6 9 07240 LINK 1 29 302150 PIVOT Pedal 1 10 07274 VALVE Lift 1 30 302703 BRACKET Switch 1 11 302070 FRAME 1 31 07360 CLAMP Cable 1 12 07276 OIL FILTERASSEMBLY 1 32 07364 CLAMP Cable 1 07277 HEAD Oil Filter 1 39 07394 BLOCK 2WD 1 07278 ELEMENT OilFilter 1 34 302624 SPACER 4 13 07388 MOTOR Wheel 2 35 07410 TIRE Front Tire Onl 1 14 07350 CALIPER R H 1 36 07425 RIM 1 15 07351 CALIPER L H 1 07427 STEM Valve 1 16 07352 ROTOR 2 38 302791 KIT Brake Pad 2 17 07269 BOLT Wheel 10 39 302855 HEX ADJUSTER Pump 1 18 07243 TIRE amp WHEEL ASSEMBLY 2 40 302884 WASHER Plated 1 19 06036 BUSHING 1 41 07395 1 20 06037 BEARING Thrust 1 Three Wheel Drive OHGAH 02 26 HY700M 8 99 5
9. 807104 en STARTER SOLENOID GROUND SOLENOID NOTE VALVE WIRE WIRE THIRD WHEEL ASSIST 07395 07385 07383 MODEL ONLY 26 HY700M 8 99 NATIONALE HYDRO 70 TRIPLEX PARTS LIST Note For your records and future ordering fill in the following information DATE PURCHASED MODEL NO SERIAL NO ORDERING INFORMATION When ordering replacement parts always furnish 1 Your complete name address and phone number 2 Model Number and Serial Number plate located on the main frame between the oil tank and the fuel tank 3 Part Number it is recommended that the correct number be verified with a current Master Price List 4 The full Description of the part 5 Quantity desired quantity shown is the total number of parts con tained in the particular view shown Ifthe Part Number and the Description of your order do not agree the Part Number will be used to fill your order 27 6c Item Part No Description Qty 1 07333 SEAT 2 07258 CAP Bearing 6 04512 SPRING Seat A 302228 SUPPORT Seat Spring 5 302133 BASE Seat includes 6 6 06029 BUSHING 07260 CAP Gas 8 302607 TANK Gas includes 27 9 302638 SPRING 10 302552 STRAP Rubber 11 302551 STRAP Tank 12 302162 BASE Spring 13 06130 06131 14 302070 15 302043 16 302068 17 07318 18 302067 19 302069 Three Wheel Drive CONE Bearing CUP Bearing FRAME FORK SPACER Rear Wheel HUB Rear Wheel SPACER
10. ANY DEFECT MALFUNCTION ORBREACH OF WARRANTY LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES UNDER ANY AND ALL WARRANTIES IS EXCLUDED TO THE EXTENT PERMITTED BY LAW NATIONAL MOWER COMPANY 700 Raymond Avenue St Paul Minnesota 55414 U S A 51
11. Steering 1 24 04074 END Rod 2 25 07372 1 26 04544 SPRING 1 2 302659 SPACER Spring 1 28 07242 CONTROL Choke 1 29 07407 DECAL Dash 1 30 07353 COVER Switch 1 21 07404 DECAL Noise LWA 1 32 07405 DECAL LPA 1 33 07406 DECAL Slope 1 34 07403 DECAL Parking Brake 1 35 07457 GRIP Handle Bar 2 36 07386 SWITCH 3 WD 1 07490 DECAL Dash 1 OHGAH 02 5 2 M 2 LA NO HY 700M 8 99 No Description Qty 1 09158 COVER 1 2 302070 FRAME 1 3 202436 KEY 1 4 302745 COUPLER Pump 1 5 591181 DISK Coupler 1 6 302744 COUPLER Engine 1 7 302437 1 8 302093 FRONT PLATE Air Duct 1 9 302359 AIRBOX 1 10 302301 HEATSHIELD 1 11 08061 GUIDE Belt 2 12 302699 1 13 302435 1 14 03628 1 15 03928 BELT Gates 6840 2 16 302128 PIPE Exhaust 1 17 494664 MUFFLER 1 18 07256 DECAL Down 1 19 302065 FOOTREST L H 1 ENGINE AND FOOTREST ASSEMBLY Item PartNo Description Qty 20 07262 NON SKID L H 1 2 07257 DECAL 1 22 302092 PLATE Mounting 1 23 302096 SHROUD L H 1 24 302095 SHROUD 1 25 07252 DECAL National Mower Company 1 26 302064 FOOTREST R H 1 27 07261 NON SKID 1 28 07270 1 29 302557 GUARD Muffler 1 30 07360 CLAMP 1 31 07399 KNOB 2 32 302623 STOP Pedal 1 33 07430 CLAMP Muffler 1 1 8 1 34 07433 CLAMP Muffler 1 1 4
12. company that delivers the shipment 3 SPECIFICATIONS 3 1 ENGINE SPECIFICATIONS TYPE Twin Cylinder Air Cooled ENGINE MODEL Briggs amp Stratton Vanguard HORSEPOWER 11 9 kw 16 hp COOLING Ducted air flow 3 2 TRANSMISSION TRACTION DRIVE Direct coupled variable displacement hydraulic pump with high torque wheel motors OIL TANKS 18 9 L 5 gallon capacity 3 3 VEHICLE SPECIFICATIONS FUEL TANK 18 9 L 5 gallon capacity WHEELS AND TIRES Front 20 10 x 8 00 Tubeless Turfmate Rear 18 8 50 x 8 00 Tubeless Turfmate TIRE PRESSURE 10 12 PSI FRAME Welded steel construction MOWING SPEED 0 12 K H 0 7 5 MPH TRANSPORT SPEED 12 K H 7 5 MPH REVERSE SPEED 3 K H 2 MPH CONTROLS Foot operated traction pedal for forward and reverse Hand operated choke and throttle levers Foot operated hydraulic lift with auto start stop feature Hand operated reel engagementlever Free wheeling valve 3 4 BATTERY TYPE Group U1 Type GT NOMINAL VOLTAGE 12V DIMENSIONS L 7 3 4 19 68 cm x W 5 3 16 13 17 cm H 7 5 16 18 5 3 5 MOWER SPECIFICATIONS NUMBER AND SIZE 3 25 Reels REEL DIAMETER 7 17 8 cm BEARINGS Timken Tapered Roller BLADES Six Alloy Steel Blades HEIGHT OF CUT Adjustable 1 2 to 2 1 3 cm to 5 08 cm OVERALL CUTTING WIDTH 70 177 8 cm HEIGHT ADJUSTMENT Roller Screw Adjustment BEDKNIFE ADJUSTMENT Screw adjustment
13. complete attachment of alllinkages 10 3 REEL NOT TURNING Check for debris jammed between reel and bedknife Check for proper belt tension Tensioning on belts for countershaft to reel is non adjustable Check the condition of the slider shaft under spring of the push and pull arms for free movement if necessary clean shaft and apply grease to mating surfaces If slippage still occurs as a result of belt wear and belt stretch replace the belt Check drive belts between engine and countershaft pulley If adjustment is necessary this can be accomplished by adjusting the clevis on the reel engagement lever for more tension on the belts If clevis needs to be adjusted beyond the thread length available replace the belt 10 4 REEL WILL NOT CUT Check reel to bedknife clearance with paper common newspaper the reel should cut the entire length of the bedknife If adjustment is necessary adjust clearance by turning equal turns on each side of the reel hex reel adjusters located on each side of the reel Turn a 1 8 turn at time periodically checking with paper Inspect condition of the reel and bedknife and service as necessary DANGER To avoid possible serious injury before making any adjustments or performing maintenance place all controls in neutral fully lower cutting units to the ground turn ignition switch OFF and remove key 23 11 LUBRICATION Grease Items 1 through 9 use pressure g
14. danger from carbon monoxide gas in the exhaust Start the engine but do not operate at high speed immediately after starting Allow time for it to become properly warmed and lubricated HY70OM 8 99 NATIONALE HYDRO 70 TRIPLEX 10 TROUBLE SHOOTING GUIDE 10 1 ENGINE WILL NOT START Check fuel in tank Check if fuel is at end of fuel line at carburetor not clean filter on fuel shutoff on bottom of tank not replace fuel filter Check spark plugs Check for spark at spark plug Check for foul condition Replace spark plug if necessary refer to Briggs and Stratton engine manual for recommended spark plug number and gap Check position of reel engagement lever and traction pedal both must be in disengaged lever and neutral pedal position Check electrical wiring and switch operation Check positioning of reel control safety switch and traction pedal neutral safety switch Both must be adjusted to allow current flow from the s terminal to the starter solenoid Refer to Page 26 for circuit diagram Check for continuity of each safety switch Replace switch as required Check battery for charge level Replace or charge if necessary Check for corrosion on battery terminals clean as necessary 10 2 TRACTOR WILL NOT MOVE Disengage parking brake Check towing valve assuring that the valve is totally closed Check linkage from traction pedal to the pump control mechanism to assure
15. 7 REEL END PLAY ADJUSTMENT As the reel is used normal wear of the reel bearings will cause end play This condition could cause uneven wear to moving parts and uneven cutting of turf Test for end play periodically by trying to move the reel from side to side in the frame If there is any movement adjust by loosening the locknut on the adjustment body which 15 located on the inside right end of the reels and turn adjustment bolt in a half turn or less Do not overtighten as it would cause excessive bearing wear Test again for end play if reel is rotating freely and end play can not be detected retighten the locking nut on adjustment bolt LOCKNUT amp SCREW NATIONALE HYDRO 70 TRIPLEX 7 8 BACKLAPPING PROCEDURE Back lapping is a very important step in maintaining sharp reel blades on the rear and wing mowers Many types of compounds are available for lapping However we recommend a good pre mixed water soluble compound such as Pinhigh Prices grit ranges and ordering information are available by calling a toll free phone number 1 800 422 4748 Pre mixed compound saves the time required to mix eliminates the waste of abrasive rinses off easily with water and is available in all grit ranges from coarse to extra fine This procedure should be performed when the reel blades and bed knife become slightly rounded and the grass is not cut cleanly with only a slight bed knife adjustment After grinding the bedknife a
16. 8 39 Front Cutting UDILASSOIDIVJ Rear Cutting Unit Assembly 40 41 Hydraulic Hose and Line Assembly 42 43 45 44 Hydraulic Fitting Assembly e 46 POE e EU 46 TE 47 FI 47 VVheel le e EE 48 48 0 49 Fil Front Roller Scraper 49 Rear Roller Scraper 50 50 6 51 VV 1 INTRODUCTION This manual has been prepared by National Mower Please furnish us with the Model Number Serial Company as an aid to users for assembly maintenance Number and Date of Purchase when contacting us about adjustment and ordering replacement parts Additional your machine Designations of right left frontand rear are information will gladly be furnished by calling or writing used as if the operator was sitting in the mower seat National Mower Company 2 RECEIPT OF SHIPMENT Carefully inspect your machine and crate for damage that could have occured during shipment If damages Claims for shipping damages must be noted by the shortages are noted have the transportation company s consignee at the point of destination and filed with the representative note this on the bill of lading transportation
17. AINTENANCE The long trouble free life of your machine depends on the maintenance it receives Set up a maintenance program for your Hydro 70 to cover the following points 1 Keep tractor and mowers clean Keep all moving parts properly lubricated Keep all parts properly adjusted Inspect for loose worn or damaged parts Fittings and hoses Keep shields in place at all times Keep tires properly inflated If your inspection reveals worn or damaged parts replace these parts before operating machine or before actual breakdown occurs DANGER avoid injury from hot high pressure oil never disconnect hydraulic hoses with attachments in up position Never run hands across tubes hoses or fittings to check for leaks Hydraulic fluid escaping under pressure can have sufficient force to penetrate skin NATIONALE HYDRO 70 TRIPLEX 8 2 ASSEMBLY amp DISASSEMBLY Use the illustrations in the Parts Section as reference for the disassembly and assembly of components Always maintain relative position of parts when disassembling Clean and lubricate individual parts and components as required 8 3 1 certain the ignition switch is in the Off position and the keys have been removed 2 Refer to Section 3 4 in this manual for battery specifications CAUTION Always wear protective glasses or goggles and protective clothing when working with batteries You must follow th
18. Lift 2 6 07272 PUMP Hydraulic 1 22 07277 HEAD Filter 1 7 07287 FITTING 90 1 23 07278 CARTRIDGE Filter 1 8 07288 FITTING Straight 1 24 07298 FITTING Tee 2 9 07369 FITTING 45 2 25 07295 FITTING 90 1 10 07356 FITTING 90 1 26 07282 FITTING Tee 1 11 07290 FITTING 90 1 2 07357 FITTING 90 1 12 07291 FITTING Straight 1 28 07391 FITTING Straight 4 13 07341 FITTING Plug 1 29 07393 FITTING Straight Bulkhead 3 14 07317 GAUGE Sight 1 30 07392 FITTING 90 Bulkhead 1 15 07316 SCREEN Tank 1 31 07412 FITTING Straight 2 16 07279 VALVE Needle 1 22 07390 MOTOR Wheel 1 Three Wheel Drive OHGAH 02 46 o NIO N gt 25 N O BASKET ASSEMBLY No 070001 Part No Description 07337 BASKET Rear 302526 HANGER 302562 SHIELD Rear Cutting Unit 302527 BRACKET Basket 302528 BRACKET Basket 302390 SHIELD Front Throw 302529 BRACKET Basket 07338 BASKET Front 302383 BRACKET Basket 302525 HANGER 07499 BUSHING 04080 COTTER Hairpin Qty N a aja a HY 700M 8 99 Part 1 02129 2 02128 3 302214 NATIONALE HYDRO 70 TRIPLEX HEIGHT OF CUT BAR Kit No 070009 Item Part No 1 302760 2 302761 3 202765 Description Qty Part No Description Qty SCREW Machine 1 4 302654 DECAL 1 CAPSCREW Hex Head 1 5 02282 NUT Wing 2 CHANNEL 1 PUMP Part 07272 Descriptio
19. National Mower s parts department This tool will simplify the assembly of the cutting units 3 Remove the tie wrap holding the pull arm and spring to the cutting unit Assemble the pull arm to the tractor using the sleeve and fastener provided ASSEMBLY REAR CUTTING UNIT Con t 4 Remove the two top fasteners holding the pivot bracket to the cutting unit and loosen the bottom fastener so the bracket is free to rotate 5 Align and assemble the spring and pull arm previously attached to the tractor to the pull arm shaft on the cutting unit Place the belt on the cutting unit pulley With the pull arm assembled rotate the pivot bracket into place using it as a lever arm to compress the spring and reattach with previously removed fasteners 6 Assemble the pull rod on the left side of the cutting unit to the tractor using fasteners provided 7 Acounterbalance spring has been assembled to the tractor located under the steering tower Remove the spring bushing from the cutting unit making note of its location Insert the spring bushing into the spring loop pull directly down on the spring and reinsert the fastener provided thru the bushing into the hole on the cutting unit 8 Remove the tie wraps securing the lift chains and attach the chains to the lift arm under the tractor One chain per side PIVOT PULL BRACKET ROD CC PUSH PUSHARM SPRING ARM amp SLEEVE SHAFT 10 9 Remove the tie wra
20. PER Pulley 1 4 302738 REEL 8 Blade 1 21 201383 CAPSCREW 1 5 06120 CONE Bearing 2 32 302836 BRACKET Rear Roller 1 06121 CUP Bearing 2 33 03606 PULLEY 1 6 201437 WASHER Backup 1 34 302847 ADJUSTER Roller 2 7 302838 1 35 06119 BEARING 1 8 302245 BRACKET Pull Arm 1 36 200236 ADJUSTER Reel 1 9 04077 END Rod 2 37 04542 SPRING Reel Adjuster 2 10 302639 ROD Pull 1 38 05075 ADJUSTER Hex Reel 2 11 05072 SPACER 1 39 302507 ROLLER Rear includes 40 2 12 302830 FRAME Cutting Unit 1 40 05078 PIN Roller 1 13 302311 BEDBAR amp KNIFE ASSEMBLY 1 41 302181 SHIELD 1 14 302846 ADJUSTER Roller 2 42 302842 PLATE Side R H 1 15 05080 SHAFT Roller 1 43 302401 GUARD Rear 1 16 201802 NUT Bedbar 8 44 302658 SLEEVE 1 17 02109 SCREW Bedbar 8 45 04544 SPRING 1 18 302310 BEDKNIFE 1 46 302273 CARRIER Reel R H 1 19 302504 SPACER 17 302272 CARRIER Reel L H 1 20 02641 WASHER 16 47 06035 BUSHING 2 21 02272 NUT Roller Shaft 2 48 03930 BELT BX 38 1 22 04541 SPRING 1 49 302653 CAP End 2 23 302252 PULL ARM includes 25 1 50 302513 ROLLER includes 15 19 21 49 2 24 302255 SLEEVE 1 51 302680 REEL GUARD ASSEMBLY 1 25 06031 BUSHING 1 52 302681 REEL GUARD ASSEMBLY L H 1 26 04071 RING Snap 1 53 200256 SCREWANDNUT 1 27 02644 WASHER 3 X31Tdl311 02 OHGAH CV 66 8 INOO0Z AH Bur CYLINDER 1 NEEDLE _ VALVE VALVE WHEEL MOTOR ain TANK 2 e
21. Rear Wheel AXLE Rear Wheel TANK AND REAR FORK ASSEMBLY 4 Item No Description Qty 20 07244 TIREAND WHEEL ASSEMBLY 2 21 302669 OIL TANK ASSEMBLY with Fittings 1 22 07339 OIL CAP 1 23 07355 TANK BASE Rubber 2 24 07101 SLIDE Seat 1 25 07175 CLAMP FuelLine 2 26 302678 FUELLINE 1 27 07068 VALVE Fuel Shutoff 1 28 07349 SCREEN Oil Tank 1 29 07424 TIRE Rear Tire Only 1 30 07425 RIM 1 31 07427 STEM Valve 1 2 302560 FORK 1 33 07389 AND WHEEL ASSEMBLY 1 34 07387 HUB 1 199 07390 MOTOR Wheel 1 96 302620 BRACKET Fitting 1 302687 1 38 07426 1 39 07269 BOLT Wheel 1 OHGAH 02 e HY70OM 8 99 LE Item Part No Description STEERING TOWER ASSEMBLY Qty 1 09114 COVER Tower 1 2 302566 HANDLE BAR 1 6 1 CONTROL Throttle 1 4 04012 KEY Woodruff 2 5 06030 BUSHING 2 6 04073 CLEVIS AND PIN 1 7 07364 CLAMP Cable 1 8 302205 LEVER 1 9 07007 GRIP 1 10 200676 SPACER 1 11 07325 SWITCH 1 12 302208 ROD Lever 1 13 07065 SWITCH Ignition 1 14 302041 TOWER includes 5 1 15 07249 GROMMET 1 16 302070 FRAME 1 17 07346 LEVER Brake 1 18 07347 CABLE Brake R H 1 19 07348 CABLE Brake L H 1 Three Wheel Drive Item Part No Description Qty 20 07408 DECAL Instruction 1 21 302051 ARM Steering 1 22 04011 RING Snap 1 23 302743 TUBE
22. Roller 2 18 201802 NUT 8 19 302310 BEDKNIFE 1 20 02109 SCREW Bedknife 8 21 302504 SPACER 17 22 02641 WASHER 16 23 02272 NUT Roller 2 24 302311 BEDBAR amp KNIFE ASSEMBLY 1 25 302904 SKIDBAR R H Shown 1 Item Part No Description 302905 SKIDBAR L H 26 302829 FRAME Cutting Unit R H 302828 FRAME Cutting Unit L H 27 302491 REEL 6 Blade 28 302738 REEL 8 Blade 29 201437 WASHER Backup 30 06120 CUP Bearing 06121 CONE Bearing 31 302836 BRACKET Rear Roller R H 302838 BRACKET Rear Roller L H 32 200236 ADJUSTER Reel 33 04542 SPRING Reel Adjuster 34 302549 REEL CARRIER R H 302550 REEL CARRIER L H 35 05075 ADJUSTER Hex Reel 36 06119 BEARING Roller 97 302507 ROLLER Rear includes 38 38 05078 PIN Roller 39 06119 BEARING 40 302181 SHIELD 41 302659 SLEEVE 42 04543 SPRING 43 302179 CROSSBAR 44 03929 BELT 58 45 302513 ROLLER includes No s 16 21 23 46 46 302653 CAP End 47 09173 GUARD Reel 48 200256 SCREW and NUT 49 07437 DECAL Hydro 70 Qty N 41 AIN a AIN N aja N N sch OHGAH 02 HY70OM 8 99 LV CENTER REAR CUTTING UNIT ASSEMBLY Item Part No Description Qty Part No Description Qty 1 302820 CROSSBAR 1 28 302248 ARM Pull includes 47 1 2 302840 SIDE PLATE LH 1 29 302511 PLATE Side 1 3 302491 REEL 6 Blade 1 30 302360 SCRA
23. der the traction control pedal 2 Thereel control lever switch is located on the side of the console and is activated by the reel lever 3 The seat switch is located under the seat and is activated by the weight of the operator HY70OM 8 99 6 See Section 4 0 in National Mower Hydro 70 Operators Manual for unit operation 7 ADJUSTMENTS 7 1 ADJUSTMENTS CAUTION Read each instruction completely and make sure you understand it before making any adjustment Follow all the safety precautions DANGER avoid possible serious bodily injury before making any adjustments or performing maintenance place all tractor controls in Neutral engage parking brake fully lower cutting units to the ground turn ignition switch Off and remove key 7 2 TRACTION PEDAL ADJUSTMENT The Traction pedal is equipped with two safety switches and a neutral centering device The switches prevent the engine from starting when the pedal is positioned in reverse or forward The centering device locates neutral positioning of the pump Prior to adjusting for creep elevate the wheels off the ground and support the vehicle securely Any adjustments should be done while the hydraulic oil is warm To adjust the creep of the drive wheels loosen the fastener attaching the ball bearing to the control arm and move the bearing within the slot to achieve neutral Once the traction pedal has been adjusted th
24. e switches may have to be re adjusted by moving the switches in the range of the slots provided in the switch bracket Adjust switches so that unit cannot be started unless pedal is in the neutral position NATIONALE HYDRO 70 TRIPLEX TRACTION PEDAL TRACTION PEDAL SAFETY SWITCHES THREADED ROD amp ROD END 74 BEARING 7 3 REEL CONTROL CLUTCH ADJUSTMENT The reel control clutch idler is preset at the factory However if adjustment is necessary the position of the idler can be adjusted with the clevis on the clutch rod Loosen the jam nut that locks the clevis to the clutch rod and turn the clevis further onto the rod until proper tension is achieved and re tighten nut against clevis If clevis bottoms out on the threaded rod replace the belts CLEVIS CLUTCH ROD CLUTCHIDLER LIFT STRAP 13 REEL CONTROL CLUTCH ADJUSTMENT Continued clutch idler is restricted from its proper function engaging and disengaging reel belt drive follow these steps Refer to figure on the previous page 1 Make sure clutch rod is free from any restriction by moving lever arm back and forth 2 Loosen mounting bolts for the clutch idler If the mounting bolts are torqued too tight it restricts idler movement 3 Loosen the pivot bolt between the idler arm and lift strap Any restriction at this point will cause restriction with the idler arm 7 4 SEAT SWITCH ADJUSTMENT
25. e battery manufacturer s instructions on safety maintenance and installation procedures 3 When the battery is being installed or removed make sure that the positive and negative terminals do not come in contact with metal tractor parts at the same time or severe damage will result Always connect the ground black cable last and remove it first whenever performing any maintenance 4 Battery connections must be kept clean and tight at all times Loose cables will cause eventual battery failure Keep terminal covers in place 5 Use soap and water to clean the battery as required Care must be taken to prevent soap and water from getting inside the battery 6 Brighten the terminal contact surfaces with steel wool 7 Apply alight coat of petroleum jelly or chassis lubricant to terminals and cable ends to prevent corrosion 8 Tighten cables securely to battery terminals DANGER Batteries contain sulfuric acid and generate explosive mixtures of hydrogen and oxygen gases Keep any device which may cause sparks or flames away from the battery to prevent explosion 17 8 4 CHARGING A BATTERY 1 Remove the battery from the tractor before charging 2 Be sure charger is Off 3 Connect charger leads to battery Connect the positive connector from the charger to the positive battery terminal Connect the negative connector of the charger to the negative battery terminal DANGER To avoid po
26. e is transmitted to the variable displacement pump through a drive coupling The pump supplies hydraulic fluid to wheel motors The wheel motors provide the differential action required in turns 5 3 DRIVE Power to the reels is transmitted from the engine to a jackshaft mounted under the engine through a spring loaded belt drive Three separate belts trans mit the power from the jackshaft to the mowers 5 4 IGNITION SWITCH The reel control lever must be in the disengage position and the traction control pedal is in the neutral position before starting engine Insert key in switch turn clockwise as far as it will go to start engine then release a Do not hold key in ON position more than 30 seconds at a time NATIONALE HYDRO 70 TRIPLEX b Key should be removed when tractor is not in use to prevent unauthorized operation c Refer to section 4 2 in the Hydro 70 Operator s Manual for complete starting information 5 5 HOUR METER The hour meter indicates the number of hours the tractor has been operated It can be used to keep track of maintenance intervals and the amount of time required to perform various tasks The hour meter operates whenever the ignition key is in the ON position 5 6 ammeter indicates the condition of the charging circuit If the ammeter indicates a negative reading refer to the Briggs and Stratton engine manual 5 REEL CONTROL The reel contr
27. e removed 4 Removal of the right wing and rear cutting unit belts can be done by removing the two capscrews holding the bearing mounting bracket in place With capscrews removed rotate the bearing and bracket creating space to remove both belts For reinstallation of new belts reverse these steps Taking care to tighten all mounting fasteners and making sure all belts pulleys and pulley scrapers are all in alignment ROTATE BEARING AND BRACKET REMOVE FORBELT REMOVAL FASTENERS NATIONALE HYDRO 70 TRIPLEX 8 17 COUPLING ALIGNMENT To prevent coupling failures proper shaft alignment between the pump shaft and engine shaft is required Following these steps will ensure proper alignment 1 Remove flex coupling disk 591181 from in between coupling halves 2 Rotate both coupling halves to a vertical position to check up and down alignment 3 Loosen the four fasteners mounting the hydraulic motor to the frame 4 Rotate the hex adjuster counter clockwise to raise clockwise to lower to achieve the proper height of the hydraulic motor pump shaft It is recommended to check alignment on the rounded surfaces of the couplings 5 Tighten hydraulic pump mounting fasteners Recheck alignment 6 To adjust forward and back alignment rotate couplings 907 to a horizontal position and loosen the four fasteners mounting the engine to the frame 7 Slide engine forward and back until proper alignment is achi
28. er all cutting units 3 Oil should be at 60 F to 90 F 16 32 C when checking level Do not check oil level when oil is hot 4 Drain and replace the hydraulic oil every 500 hours Use Hydraulic oil as listed in 3 7 of the Specifications section of this manual a The oil should be changed after a major component failure or if you notice the presence of water noted by a cloudy or milky appearance air noted by foam or a rancid odor indicating excessive heat b Once a year check the breather element in the tank cap and replace if necessary 5 To drain hydraulic oil tank remove drain plug from bottom of tank and loosen to remove fill cap on top of tank 6 Reinstall drain plug and fill hydraulic tank to full level on sight gauge use only filtered hydraulic oil The total hydraulic system oil capacity is approximately 5 gallons 7 Jack up front tires so they spin freely 8 Start engine operate the traction pedal and cycle lift cylinder for a minimum of three minutes Recheck oil level in sight glass gauge 19 MAINTENANCE Continued 8 11 HYDRAULIC OIL FILTER To prevent damage to the hydraulic system the hydraulic oil filter should be changed after the first 25 hours of operation and every 250 hours thereafter Remove the old filter and fill new filter with clean fluid Install new filter Hand tighten only Run engine at idle speed with hydrostatic pump in neutral for five minutes Check h
29. ers are raised When operating the mow or lift pedal keep the pedal depressed until the mowers have been completely lowered or raised and then release the pedal 5 12 FREE WHEELING VALVE To permit moving the Hydro 70 without starting the engine a freewheeling device or tow valve has been provided 12 The valve is located under the left shield on the front side of the vehicle With the engine OFF turn knob to open valve and permit free wheeling Free wheeling valve must be closed during normal operation or tractive effort will be severely reduced 5 13 DROP LIFT NEEDLE VALVE A needle valve is located under the left shield on the front side of the vehicle By turning the needle valve knob the speed of drop and raising of the cutting units can be adjusted as desired CAUTION Familiarize yourself with the instrument panel and the controls Study the instructions and learn to use the controls correctly Keep hands and feet away from controls unless you intend to use them 3 13 INTERLOCK SWITCHES There are four interlock switches on your Hydro 70 They a safety precaution which will allow you to start your mower only when the traction pedal is in neutral the reel control lever is in the disengaged position and operator is seated on the tractor If you are able to start your mower with these levers in any other position adjustment of the switches is required 1 Theneutral start switches are located un
30. eved Retighten fasteners 8 Remount coupling disk Use of a thread locking formula is recommended COUPLING HALVES HEX ADJUSTER 21 9 5 9 1 GENERALINSTRUCTIONS When you do not plan to use your vehicle for some time it should be stored in a dry and protected place Unnecessary exposure to the elements may deteriorate its appearance and shorten the usual service life 9 2 ENGINE 1 Drain the fuel from the fuel tank and carburetor 2 Operate the engine until the gasoline in the carburetor is completely consumed IMPORTANT Gum will eventually form in the tank fuel line and carburetor if the fuel is not drained Gum in the carburetor jets and passage affects engine starting 3 While the engine is still warm drain the oil from the crankcase and refill with fresh oil Refer to the engine manual for specific instructions 4 After engine has cooled remove the spark plugs and put about one tablespoon of SAE 30 oil into the cylinder 5 Clean exterior of engine Paint the exposed metal or coat it with a light coating of rust preventative oil 9 3 BATTERY 1 Remove battery and clean it refer to Manufacturer s manual for specific instructions Also refer to 8 3 and 8 4 in the Maintenance Section of this manual 2 Maintenance free batteries should be stored in an upright position in a cool dry place Storage above 80 F 26 7 C greatly increases self discharge If wet batter
31. garage doors to allow ventilation if engine is run inside exhaust fumes are dangerous Do not run engine in any enclosed area 13 Keepthe mower in good operating condition Make sure that all safety switches are operating properly and all safety guards are in place at all times except during servicing 14 Keep all nuts bolts and screws tight to be sure that the mower is in a safe working condition 15 Neverstore the mower with gasoline in the tank inside a building where the fumes could reach an open flame or spark Allow the engine to cool before storing in any enclosure 16 Keep the engine free of grass leaves or excessive grease to reduce a fire hazard 17 The mower and reels should be stopped and inspected for damage after striking a foreign object The damage should be repaired before restarting and operating the mower 18 Do not change the engine governor settings or over speed the engine 19 Proceed as follows when mowing a Mow only in the daylight or in good artificial light b Never make a cutting height adjustment while the engine motor is running c Shut the engine motor off when removing grass or unclogging reels WARNING California USA residents are required by law CA PRC 4442 8 CAH amp SC 13005 to equip their engines with spark arresters when operating in flammable vegitation Arresters must be obtained from your engine dealer and are not available from National Mower Company
32. ies are discharged the electrolyte will freeze when stored below 20 F 7 C IMPORTANT The battery should be checked every 60 to 90 days while in storage and should be recharged if necessary 22 9 4 TRACTOR Wash clean and completely lubricate the tractor Paint exposed metal with National Mower paint 9 5 TIRES 1 Before storing the vehicle clean the tires thoroughly 2 Jack up the vehicle so that the load is off the tires If it is not jacked up check the tires at regular intervals and re inflate as necessary to keep them at the recommended pressure 3 Store the vehicle so that tires are protected from the sunlight 9 6 STARTING THE ENGINE AFTER STORAGE 1 Check and recharge the battery according to recommendations given by battery manufacturer a Refer to Section 8 3 in this manual b Reinstall the battery 2 Check oil level in crankcase and hydraulic oil tank 3 Fil the fuel tank with fresh gasoline Check fuel filter 4 Remove the spark plug and wipe dry Crank the engine with spark plug removed using starter until excess oil has been expelled through the spark plug hole Replace the plug and connect the ignition lead wires 5 Before driving the vehicle check to make certain that the tires are properly inflated to the proper pressure 6 Eithermove the vehicle outside before starting engine or keep doors and or windows wide open to provide sufficient ventilation to prevent
33. in Neutral and shut off engine before inspecting hydraulic lines or hoses Never run hands across tubes hoses or fittings to check for leaks Be sure tubes and hoses do not come in contact with other frame parts which could cause abrasive wear Always replace worn hoses or tubes before operating machine a Assemble nut sleeves and tube to fitting body with minimum torque finger tight until flare contacts seat on fitting body b For tightening reference mark a line lengthwise on both the nut and adapter fitting with a marker c Using a wrench rotate the nut to tighten Turn the nut the amount shown in the chart following The line will show which fittings have been tightened and how much 0 On hoses with ring fittings make sure rings are clean and hose fittings are properly seated before tightening Hold the fixed portion of the hose coupling with one wrench use a second wrench to tighten or loosen the hose nut This will prevent damage to the fitting seal When tightening a hose do not allow it to twist hold it in a normal straight portion Tube O D or Hose Rotate No of Hex Flats 3 8 2 1 2 2 5 8 1 1 2 102 1 3 4 101 NATIONALE HYDRO 70 TRIPLEX 8 10 HYDRAULIC OIL 1 The reservoir should be checked daily for proper level in the sight glass gauge on rear of the oil tank Oil level should be seen in the sight glass 2 Park the tractor on a flat or level surface Fully low
34. n Qty Part No Description Qty SNAP RING 2 4 302762 SEAL 1 RING Retaining 1 5 302759 SHAFT Input 1 BEARING input 1 47 WHEEL MOTOR No s 07273 07388 07390 Part Description Qty Item Part No 1 302718 KEY 1 4 302717 2 302715 BEARINGHOUSING 1 5 302714 3 302716 SHAFT amp BEARING KIT 1 Description NUT Hex SEAL KIT LIFT VALVE Part No 07274 Item Part No Description Qty Item Part No 1 302725 SHIM Mylar AR 4 302728 2 302726 O RING KIT 1 5 302729 3 302727 BALL 2 6 302730 48 Description RETAINER O RING O RING HY70OM 8 99 NATIONALE HYDRO 70 TRIPLEX LIFT CYLINDER Part No 07275 Item No Description Qty Item Part Description Qty 1 302709 SHAFT WELDMENT 1 4 302712 PISTON 1 2 302711 SEAL KIT 1 5 302713 LOCK NUT 1 2 13UNC 1 3 302710 GLAND End 1 6 NA TUBE WELDMENT 1 FRONT ROLLER SCRAPER KIT Part No 070005 Item Part No Description Qty Item Part No Description Qty 1 302693 HANGER 6 4 02302 WASHER Lock 12 2 02012 CAPSCREW Hex Head 12 5 302692 SCRAPER Roller 3 3 02402 WASHER Flat 12 6 02205 NUT Full 6 49 REAR ROLLER SCRAPER KIT 070013 Item Part Description Qty Item Part No Description Qty 1 302864 ADJUSTER Rear Roller 3 3 09169 CABLE Roller Scraper 3 2 02228 12 4 302865 ADJUSTER Rear Roller 2 VALVE BLOCK Part 07395 Description Qty
35. nd reels backlapping should be done to establish a perfect match between the bedknife and reel blades 1 Clean cutting units of any foreign debris and disengage reel clutch 2 Make sure to adjust the bedknife to the reel so that the bedknife is level with the reel and light contact is maintained 3 Reels must be run in a reverse direction to be lapped Remove exterior guards as needed Attach a back lapping machine not supplied by National Mower to one of the outside reel stub shafts of the front two cutting units following the instructions furnished by the backlapping machine manufacturer Some back lapping machines may not rotate all three cutting units simultaneously If this occurs back the reel adjustment off or disconnect the remaining two cutting units and concentrate on one cutting unit at a time 4 With reels running and concentrating on one reel apply the lapping compound using a 2 or 3 wide brush Apply the compound evenly to the mowing blades Adjustment of the reel to bedknife may be required relap as necessary DANGER Be extremely careful not to let the brush your fingers or your clothing get caught in the reels Use approved safety glasses to protect eyes from flying particles and abrasives 15 BACKLAPPING PROCEDURE Continued 5 Stop the reel and examine both bed knife and reel blades to see that the cutting edges are uniformly sharp If not gradually tighten hex adjuster and repeat S
36. nd signature of the authorized person HY 700M 8 99 NATIONALE HYDRO 70 TRIPLEX IMPORTANT National Mower Safe Operation Practices For Riding Mowers Know control functions and how to stop quickly READ THE OWNER S MANUAL 2 Donotallow children to operate the mower Do not allow adults to operate the mower without proper instruction Do not carry passengers Keep children and pets at a safe distance from an operating mower Clear the work place of objects which might be picked up by the blades and thrown To start engine operator must be seated reel control must be disengaged and foot control must be in neutral 6 Takeallpossible precautions when leaving the mowerunattended such as shifting into neutral stopping the engine and removing the ignition key Do notstoporstartsuddenly when going uphill or downhill Use extreme caution when mowing on slopes Reduce travel speed on slopes and in sharp turns to preventtipping orloss of control Use extreme caution when changing direction on slopes 9 Watch for holes in the terrain and other hidden hazards 10 Watch for dangerous traffic when crossing or near roadways 11 Neverdirectthe discharge of material from operating reels toward bystanders nor allow anyone nearthe mower during operation 12 Handle gasoline with CAUTION it is highly flammable a Usean approved gasoline container b Never fill the fuel tank indoors Wipe spilled gas immediately Open
37. of reel to bedknife REEL FLOATATION Front and Rear Roller with Cutting Unit Center line Pivot 3 6 WEIGHT amp DIMENSIONS OVERALL LENGTH 86 3 8 219 4 cm OVERALL HEIGHT 44 3 4 113 6 cm WHEEL BASE 50 3 4 128 9 cm WHEEL TREAD WIDTH 45 114 3 cm center of tires OVERALL WHEEL WIDTH 55 139 7 cm OVERALL WIDTH 75 190 5 cm WORKING WEIGHT 1 085 Ibs 492 kg 3 LUBRICANTS ENGINE OIL Use high quality detergent oil API American Petroleum Institute service class SF Select the viscosity based on the air temperature at the time of operation as shown in the table Recommended SAE Oil Viscosity Grades SAE Viscosity Grades 2222 1553 5 30 10 30 STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE HYDRAULIC SYSTEM OIL Use ISO GRADE 100 SAE 30W Hydraulic Oil HY 700M 8 99 3 9 DISPOSAL NUMBERS Petrol Lead Free 54104 Engine oil 54112 Fiberglass parts 9 103 Ee EE 57502 Gear oil 54112 54202 Plastic tanks 57127 3 10 TRANSFERS NATIONALE HYDRO 70 TRIPLEX 3 9 NOISE EMISSION amp VIBRATION Sound Operator Position 88 dBA Sound Power Level LWA 106 dBA Vibration Max Vibration 57 7 m s2 RMS Location Left Hand Operating Condition Engine
38. ol lever must be in the disengaged or back position to start the engine Placing lever in engaged position will allow reels to run when mowers are lowered Never operate the mowers when they are not cutting grass as excessive friction and heat will develop between the bedknife and reel and damage the cutting edge 11 5 8 When starting cold engine pull the choke control out to close the choke plate and allow a richer fuel mixture to enter the engine After the engine starts push the choke control about half way in to keep the partially closed Push the choke control all the way in to open the choke plate for normal operation after the choke plate engine is properly warmed A warm engine usually requires less choke to start 5 9 LEVER Push forward to increase engine speed pull back to decrease 5 10 TRACTION PEDAL The traction pedal operates the forward and reverse direction and speed of the machine By pushing the toe of the pedal down the forward speed is increased By pushing the heel of the pedal down the reverse speed is increased When the traction pedal is released the machine will slow down and stop 5 11 AND LIFT TREADLE Depress and hold the down pedal with left foot to lower mowers Reels will rotate if reel control lever is in ENGAGED position Depress and hold the up pedal to raise mowers Reels will stop if control lever is in ENGAGED position when mow
39. ouch scratched or worn painted surfaces National Mower green and white spray paint cans in 12 3 4 ounces are available at your National Mower Equipment Distributor 8 16 BELT REPLACEMENT To make belt changes easier a belt tool kitis available through National Mowers parts department Refer to section 4 3 Belts should be inspected regularly worn or damaged belts may cause poor mowing results or disrupt operation If a belt change is necessary follow these steps 1 Remove the mounting bolts securing the pivot bracket on the two front cutting units CAUTION This bracket is spring loaded Slowly rotate the pivot bracket HY70OM 8 99 BELT REPLACEMENT Continued 1 Gently roll the pivot bracket off of the cutting unit Now the belts can easily be removed from the reel pulleys 2 Remove the top two bolts on the rear cutting unit right side only pivot bracket Noting this bracket is under spring pressure Loosen the bottom bolt and use it as a pivot point Roll back the pivot bracket allowing the spring pressure and belt tension to be released Use of a crescent wrench to get extra leverage is very helpful Remove belt from rear cutting unit pulley 3 To remove belts from the tractor you must remove the left front cover to access the main engine drive belts Remove the front belt guide on the engine drive pulley with clutch disengaged the two main drive belts and the left wing cutting unit belt can now b
40. p attaching the cutting unit belts to the tractor Position the cutting unit in front of the tractor with the pulleys to the inside Remove the two top fasteners holding the pivot bracket to the cutting Place the belt on the cutting unit pulley Assemble the push arm to the pivot bracket using the washers and snap ring provided Rotate pivot bracket into place using it as a lever arm to compress the spring and reattach with previously remove fasteners 10 Attach counterbalance spring and chains to lift bar 11 Connect link bar between cutting units with fasteners provided PUSHARM LINKBAR PIVOT BRACKET Belt tool complete with instructions below available through National Mowers Parts Department HY 700M 8 99 5 INFORMATION 5 1 Your vehicle is powered by twin cylinder 4 cycle Briggs amp Stratton Vanguard engine which uses unleaded gasoline 85 octane minimum DO NOT MIX OIL WITH GASOLINE Engine speed is controlled by means of a throttle lever mounted on the left side of console panel A separate Engine Manual prepared by the engine manufacturer is supplied Study the manual carefully until you are familiar with the maintenance operation adjustment and repair of your equipment Proper attention to the engine manufacturer s directions will assure maximum service life of the engine and highest operating efficiency 5 2 DRIVE TRAIN Power from the engin
41. placement 20 21 21 Coupling Alignment 22 General Instructions 22 22 tee 22 22 22 Starting After Storage 22 Trouble Shooting Guide 25 niit rrr et nn t 23 Engine Will Not Start 23 Tractor Will Not Move 23 FXG CHINOL BIRI IILI emm 23 Reel Will Not Cut 9 23 len 24 25 Electrical Schematic annnannnennnannennnnnnennnnrnnnnrnrrnrrrsrrrnnrserrsnernrrnnrrnne 26 Parts List and Ordering Information 27 Tank and Rear Fork Assembly 28 29 Steering Tower Assembly AA 30 31 Engine and Footrest Assembly 32 33 Traction Pedal and Pump Assembly 34 35 Lift Arm and Drive Assembly 36 37 aga 3
42. rpm 3200 Unit stationary NATIONAL MOWER CO 700 RAYMOND AVE ST PAUL MINNESOTA 55114 USA 651 646 4079 FAX 651 646 2887 C POWER RATING 9 7 kW at 3200 rpm WEIGHT 528 kg TRANSFERS Continued 07408 NATIONAL MOWER CO NATIONAL MOWER CO ST PAUL MN 55114 0299 ST PAUL MN 55114 0299 651 646 4079 651 646 4079 07409 07407 3 11 TRANSFER DESCRIPTION 07406 Donot exceed 25 degree slope Located on main chassis 07403 Parking brake on off Located on main chassis 07372 Manufacture s identification and specifications Located on main chassis 07257 Mowers up reels off Located on main chassis 07256 Mowers down reels on Located on main chassis 07405 Sound level at operators position Located on main chassis 07404 Sound power level Located on main chasis 07408 Mow pedal operation and vehicle motion pedal operation Located on main chassis 07409 Main instrument panel Three wheel drive unit Located on main chassis 07407 Main instrument panel Two wheel drive unit Located on main chassis 8 HY70OM 8 99 4 ASSEMBLY INSTRUCTIONS 4 1 ASSEMBLY The Hydro 70 is shipped in two separate crates one for the tractor and one for the cutting units 4 2 TRACTOR ASSEMBLY 1 Disassemble crating for the tractor carefully to prevent damage to components 2 Remove the tape holding the keys in the steering shaft Position the handlebar assembly over the shaft and key securing it with set screws pro
43. ssible injury stand away from battery when charger is turned on damaged battery or a battery with an internal short could explode 4 Charge the battery using one of the methods shown below Follow the manufacturer s instructions on the charger 5 Ifwhen charging the battery violent gassing or spewing of electrolyte occurs or the battery case feels hot 125 F 52 C reduce or temporarily halt charging to avoid damaging the battery 6 Always turn charger to Off before removing a the battery MAINTENANCE Slow Charge Fast Charge 10 hours 5 amps 2 1 2 hours 20 amps 1 1 2 hours 69 30 amps 1 hour 45 amps 5 hours 10 amps 8 5 BED KNIFE REPLACEMENT When the bed knife becomes damaged or too worn to keep sharp it must be replaced Design improvements have made bed knife replacement easier with bolt on construction Follow the procedure below 1 The backbar 1 bed knife 2 and fasteners have been assembled at the factory under tension To ease replacement and prevent misalignment of components the leading edge of the backbar must be tack welded two or three places before the old fasteners are removed 2 Remove shoulder nuts 3 and flat head screws 4 If shoulder nuts are badly rusted or corroded they may have to be cut off and screws driven out to be removed 3 Clean the bottom surface of the backbar for maximum metal contact with the new bed bar 4 Fasten the new bed knife to the bottom of
44. tep 4 on previous page until the proper sharpness results 6 Rinse off the compound thoroughly with water to remove all abrasive Check for sharpness and readjust the bed knife if necessary 7 Check reel adjustment on each mower and adjust if necessary so that they will cut paper cleanly across the full length of the bed knife when paper is held 90 to the bedknife and pinched when held horizontally 7 9 GRINDING PROCEDURE DANGER Be extremely careful not to let brush your fingers or your clothing get caught in the reels Use approved safety glasses to protect tour eyes from flying particles and abrasives BACK GRIND IN THE DIRECTION OF THE ARROW AT 25 Note centerline POSITION OF REEL TO THE BLADE Reels must be ground at 25 in the direction shown by the arrow Back grind until reel blades are free from roundness dents and nicks Spin grind to remove all burrs All blades must be on the same diameter For maximum cutting efficiency grind bed knife top and front edges at 5 as shown GRIND BED KNIFE AT ANGLES SHOWN gt 11 ds ZZZ2 2 22 DOV r NNN 59 HY70OM 8 99 8 DANGER To avoid possible serious bodily injury before performing any adjustments maintenance or lubrication place all controls in Neutral lower the mowers to the ground engage parking brake turn ignition switch off and remove key 8 1 GENERAL M
45. the backbar in the position shown bent edge up Shoulder of shoulder nuts must be seated firmly in the backbar and screws must be flush with the bottom of the bed knife 5 Torque shoulder nuts 35 to 40 ft Ibs 18 8 6 FUEL FILTER Before servicing the fuel filter thoroughly clean outside of filter housing and fuel hoses dirt must not be allowed to enter into fuel or fuel system Refer to the engine manual for specific instructions 8 7 ENGINE Refer to Engine Manual for manufacturer s maintenance recommendations Change oil and oil filter after the first 25 hours of operation and every 150 hours thereafter Engine replacement parts should be ordered through your local Briggs amp Stratton dealer 8 85 ELECTRICAL SYSTEM Make certain all terminals and connections are kept clean and properly secured 1 Check switches regularly to be sure they kept clean and operating correctly See 7 2 7 3 and 7 4 in the Adjustments section 2 Keep wire harness and all individual wires away from moving parts to prevent abrasive wear or potential short circuits 3 Exercise extreme care when working with the electrical system Tack weld this edge HY70OM 8 99 8 9 HYDRAULIC HOSES 1 2 Hydraulic hose and tube lines should be inspected every week to check for cuts loose connections kinks and wear DANGER To avoid serious bodily injury always lower mowers to the ground place all controls
46. un every 40 hours Clean fittings and slowly fill until grease begins to seep out Apply several drops of SAE 30 oil to all linkage friction points 24 O NIO oO AJO N gt Description Fork pivot bearing Rear wheel hub bearing Handle bar shaft pivot Pivot bearings Push arm brackets Reel engagement Neutral control bearing Countershaft bearing Countershaft bearing No of Fittings 1 1 2 9 4 HY70OM 8 99 NATIONALE HYDRO 70 TRIPLEX E T Ok S sj 3 Description No of Fittings Reel shaft bearing Grease Items 1 through 7 use pressure gun every 40 hours Reel to bed knife adjuster Roller bearing per cutting unit Clean fittings and slowly fill until grease begins to Roller adj bracket per cutting unit seep out Pull arm rear Pull arm front NIO BIW N gt AIA N N N Pull arm bracket 25 12 ELECTRICAL SCHEMATIC SEAT GROUND WIRE REEL CONTROL SWITCH HOUR METER 07104 SWITCH 07325 07332 07063 Blue Red 0 A U 1 GRD IGNITION SWITCH 807065 E AMMETER x 07064 Bat 2 6 STARTER 5 SOLENOID 5 gt TRACTION SOLENOID WIRE PEDAL oN 2 30 AMP FUSE IY TOGGLE SWITCH gt 07386 5 lt 1 7 77 REGUATOR ANTIAFTER STOP FIRE SWITCH SOLENOID EN uem 5 STARTER WIRE
47. v HYDRAULIC HOSE AND LINE ASSEMBLY Item No Description Qty Item No Description Qty 1 07303 HOSE Motor 3 12 07304 HOSE Lift Cylinder 1 2 07309 LINE Pump to 1 13 07308 LINE Case Drain 1 3 07310 LINE Pump to 1 14 07302 HOSE Case Drain L H 1 4 07299 HOSE Case Drain R H 1 15 07377 LINE Tee to Block 1 5 07306 LINE Case Drain 1 16 07378 LINE Tee to Block 1 6 07311 LINE Pump to Filter 1 17 07305 HOSE Motor 1 7 07307 LINE Tank to Pump 1 18 07380 LINE Block to Bulkhead 1 8 07300 HOSE Suction 1 19 07379 LINE Block to Bulkhead 1 9 07375 LINE Pump to Valve 1 20 07382 HOSE Bulkhead to Bulkhead 2 10 07376 LINE Filterto Valve 1 521 07381 HOSE Rear Motor 2 11 07301 HOSE Lift Cylinder 1 22 302688 SLEEVE Hoses 1 Three Wheel Drive OHGAH 02 G b D C 4 pn 216 8 MON o V G NI NEEDLE VALVE 15 eS SN VALVE 8 a WHEEL MOTOR e WHEEL 2 G HYDRAULIC FITTING ASSEMBLY Item Part No Description Qty Item Part No Description Qty 1 07283 FITTING Reducer 2 17 07293 NIPPLE 1 2 07284 FITTING Straight 2 18 07292 FITTING 90 2 3 07297 FITTING 45 2 19 07281 ADAPTER Straight 2 4 07285 FITTING Straight 4 20 07388 MOTOR Wheel 2 5 07286 FITTING 90 2 21 07275 CYLINDER
48. vided it the handle bar 3 For removal of handle bar see Section 8 12 4 Remove the tower cover Refer to section 3 4 for battery specifications Install the battery on the base inside the tower Attach the red wire to the positive terminal of the battery and attach the black ground wire to the negative terminal of the battery Replace and secure the tower cover HANDLE BAR KEY COVER 5 The seat base is temporally held together for shipment Remove and discard the fastener securing the seat base to the spring plate Position the seat slider which is assembled to the seat onto the seat base plate and secure with locknuts provided Attach the safety switch wires to the switch located under the seat Wires can be connected to either terminal NATIONALE HYDRO 70 TRIPLEX SEAT SUPPORT 6 Tires should be checked and if necessary adjusted for proper inflation Refer to Section 3 3 7 Check the oil level in the oil tank Refer to Section 8 10 8 Check the oil level in the engine Refer to 3 7 and 5 1 4 3 ASSEMBLY OF REAR CUTTING UNIT TO TRACTOR 1 Disassemble crating for the cutting units carefully to prevent damage to components 2 Position the rear cutting unit under the tractor The rear cutting unit can be identified by the reel guard attached the rear of the cutting unit Position the cutting unit with the reel pulley on the right side of the tractor Belt tool kit Part 070008 is available thru
49. ydraulic oil level and add if necessary CAUTION Frequent checks must be made on the oil level in the hydraulic system Should the pump run short of oil immediate and permanent damage will result 8 12 HANDLE BAR REMOVAL For easy removal of handle bars follow this procedure 1 20 Cut away rubber coating above steering hub Shown in diagram Clean internal threads as necessary Insert 3 8 24 X 2 hex head capscrew Fully threaded if possible Loosen set screws attaching handle bars to the steering shaft Screw capscrew in until handle bars are removed Reinstall handle bars and replace the 2 long capscrew with a 3 8 24 x 3 8 long capscrew to prevent future rusting of steering hub to shaft 8 13 JUMPER CABLES Before attempting to jump the battery check the condition of the battery check the water level and refer to the battery manufacturer s instructions 1 Stop the engine on vehicle with good battery 2 Connect one jumper cable to positive terminal on good battery Connect other end of the jumper cable to the positive terminal on the dead battery 3 Connect one jumper cable to negative terminal good battery Connect other end of negative jumper to ground frame of vehicle with dead battery 8 14 LUBRICATION Refer to Lubrication Section Pages 24 and 25 of this Maintenance Manual 8 15 PAINTING For protection and appearance clean and ret
Download Pdf Manuals
Related Search