National Mower IM25 User's Manual
Contents
1. Use heavy gloves and be careful blades are sharp 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 move ment adjust by loosening the lock nut 23 Fig B on the adjustment bolt located inside the right end of the reel Turn adjustment bolt in one half turn or less Do not over tighten as this will cause excessive bearing wear Test again for end play If reel is rotating freely and no end play can be detected retighten the lock nut on the adjusting bolt IM250M 1 2000 250 NATIONAL IM25 Infield Mower o G Ng a 7 Poa l FIGURE A 4 FIGURE B 20 FIGURE C Backlapping Backlapping is a very important step in maintaining sharp reel blades on the mower This procedure should be performed when the reel blades and bed knife become slightly rounded and the turf is not cut cleanly after a slight bed knife adjustment Also after grinding the bed knife and reel backlapping should be done to establish a perfect match between the be knife and the reel blades The reel must run In a reverse direction to be backlapped 1 Make sure to adjust the reel to the bed knife so that the reel is level with the bed knife and light contact is maintained 2 Remove the2. ECIS IM25 NATIONAL INFIELD MOWER GEI OWNER S MANUAL 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 www nationalmower com JANUARY 2000 Specifications 3 5 hp Briggs amp Stratton I C 4 cycle w gear reduction of 6 1 Width of cut 25 Height of cut 1 2 to 2 Engine Weight 270 Ibs without fuel Dimensions 65 length w basket x 32 width x 39 1 2 height Gas tank 4 guart capacity Fuel Unleaded regular gasoline Safety Precautions e Allow only responsible persons that are familiar with the controls to operate this eguipment e Always operate with all guards and front throw basket in place e Never attempt to remove or replace the basket whenreelis engaged e Inspectrollers reel and drive for debris or foreign objectand remove before starting to mow e Followengine manufacturers recommendations for proper gas oil and maintenance procedures e Bealertwhen mowing for objects in the mowing path e Never attempt to adjust cables or cutting height when engine is running e Use protective eyewear when mowing e Use extreme caution when handling gasoline it is highly flammable Introduction This machine has been designed with professional quality components to specifically mow baseball infield turf Other uses include golf courses and turf contractors National welcomes your comments Additi
3. 1 9 09199 CONTROL Drive 1 10 08085 ROD Brake 1 11 07024 KNOB Brake Lever 1 12 04520 SPRING Brake Rod 1 13 400069 RETAINER Clutch Cable 1 14 400040 COUNTERSHAFT See Figure 2 1 15 07503 CHAIN Roller 1 16 400041 COUNTERSHAFT See Figure 3 1 17 07502 CHAIN Reel 1 18 400205 GUARD Clutch 1 19 400024 PIVOT Brake 1 20 400017 BRAKE 1 21 200676 BUSHING 4 22 400100 CLUTCH See Figure 5 1 23 400102 PLATE Top 1 24 05002 PIN Handle Bar 2 25 400117 BRACKET Handle Bar Pin 2 26 400319 GUARD Left Inside 1 27 400093 GEAR Roller 36 Tooth 1 28 400092 SPROCKET Roller 28 Tooth 1 29 400038 ROLLER ASSEMBLY Rear See Figure 4 1 30 400070 GUARD Left Side 1 31 201802 NUT Bed Bar 8 32 02109 SCREW Bed Bar 8 33 302311 BED BAR with Bedknife 1 302310 BEDKNIFE Only 1 34 03114 SPROCKET Reel 11 Tooth 1 35 400029 BRACKET Basket Left Side 1 36 302846 ADJUSTER Roller Left 1 37 400061 SIDE PLATE Left 1 38 400035 CARRIER Reel Left 1 39 400008 ADJUSTER Reel 2 40 06102 BEARING Tapered Roller 2 41 06121 RACE Tapered Roller 2 42 03508 SEAL Reel Carrier 2 43 201437 TAKE UP Reel Bearing 2 44 400094 SHIELD Front Throw 1 45 302491 REEL 6 Blade 1 302738 REEL 8 Blade 1 46 400322 ROLLER Shallow Groove 1 400442 ROLLER Deep Groove 1 47 400460 PIN Basket 2 48 07338 BASKET 1 49 302847 ADJUSTER Roller Right 1 50 400034 CARRIER Reel Right 1 51 400075 SIDE PLATE Right 1 52 400030 BRACKET Baske
4. Right Side Guard 24 Fig A 3 Raise the mower up off the ground until the rear roller clears the ground as shown in Figure D 4 Loosen Hex Nut 25 Fig C on the back lap assembly pivot assembly rearward and tighten hex nut as shown in Figure D o Start engine and run at half throttle Engage drive clutch 6 With reel running apply lapping compound to the reel with a 2 or 3 brush Apply compound evenly to the moving blades Backlapping gears are shown engaged The gears mustbe in this position when backlapping FIGURE D Raise mower up until drive roller clears the ground M 11111111111 Backlapping gears are shown disengaged The gears must be in this position when mowing DANGER Be extremely careful not to let the brush your fingers or your clothing get caught in the reel Use approved safety glasses and gloves to protect you from flying particles and abrasives Many types of compounds are available for lapping We recommend a good pre mixed water soluble com pound Pre mixed compound saves time reguired to mix eliminates abrasive waste rinses off with water and is available In all grit ranges from course to fine 7 Stop the reel and examine both the bed knife and reel blades to see that the cutting edges uniformly sharp If not gradually tighten reel adjuster bolts see Reel To Bed Knife Adjustment and then repeat Step 6 above until achieving the proper sharpness 8 Rinse off th
5. are two positions available for the Rear Roller Assembly 19 Fig A The bearings for the rear roller shaft must be located in the lower position if the cutting height is over 1 and the upper position if the cutting height is 1 or less Disassembly of the rear roller assembly is necessary to change the bearing location See Figure 4 for reference DANGER Reel blades are sharp Never attempt to adjust cutting height of reel to bed knife while the engine is running 2 Adjust cutting height by loosening the top and bottom Adjusting Nuts 20 Fig C which hold roller adjusters for the Front Roller 21 Fig B It is important to get roller adjusted the same height on each end so that there will be uniform cutting the entire width of the mower Do not adjust by sight 3 After loosening adjusting nuts on each side place a board or gauge plate of the desired height under bed knife back bar and then tighten nuts REEL TO BED KNIFE The Reel Adjustment Bolt 22 Fig C regulates the distance from the bed knife To reduce the distance turn the locking hex nut on each side of the reel up Proceed slowly and do not over adjust Turn about 1 8 of a turn to start with Do not get the reel so tight that it is hard to turn by hand A too tight reel will cause excessive wear The reel should wipe or lightly touch the bed knife Check to see that the blades are cutting the paper all the way across Tighten lock nuts DANGER
6. desired mowing speed 4 Engage Reel Drive Lever 16 Fig A and B to start mowing 5 Release drive bail slightly from handle to disengage reel 6 Release drive bail completely to stop the mower forward movement 7 To shut off mower pull throttle control all the way back to slow push ignition switch to off and engage parking brake Maintenance GENERAL 1 Empty basket of clippings periodically to prevent spilling 2 After each mowing session clean clippings out of basket off reel and all other surfaces to prevent corrosion 3 Inspect reel and bearing surfaces for foreign material that might prevent reel from rotating freely and clean as necessary 4 Follow engine manufacturer s recommendations carefully to prolong engine life LUBRICATION There are Zerk Grease fittings 17 Fig B on each end of the reel and on each Roller Adjuster 18 Fig C Use a lithium base type grease at these locations every 8 hours of operation Use a light machine oil at all pivot points every 30 hours of operation Adjustments CONTROLS Adjustment of control cables have been made at the factory before shipment If additional adjustment is needed move adjusting nuts at the machine end of the cables HEIGHT OF CUT Cutting height should be preset by the dealer according to ordering instructions prior to delivery If a change in cutting height is required the following proce dure must be followed 1 There
7. e compound thoroughly with water to remove all abrasive 9 Loosen the hex nut on the backlap assembly and pivot assembly forward to disengage rear roller Tighten nut in the position shown in Figure E 10 Lower machine to the ground and replace right side guard 111 FIGURE E IM250M 1 2000 250 NATIONAL IM25 Infield Mower 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 located on the rear side of the top plate 3 Part Number itis 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 If the Part Number and the Description of your order do not agree the Part Number will be used to fill your order FIGURE 1 8 IM250M 1 2000 250 NATIONAL IM25 Infield Mower FIGURE 1 MAIN ASSEMBLY Item Part No Description Gty 1 400115 HANDLE BAR Upper 1 09201 CONTROL Reel 1 3 09200 CONTROL CABLE Reel 1 4 200509 LEVER Brake 1 5 400114 HANDLE BAR Lower 1 6 08083 ADJUSTMENT ROD Handle Bar 2 F 400201 BAIL 1 8 09198 CONTROL Throttle
8. eir 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 PURCHASER S EXCLUSIVE REMEDY FORANY DEFECT MALFUNCTION OR BREACH 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 15
9. lt A NIN NM NIN DY IM250M 1 2000 250 NATIONAL IM25 Infield Mower FIGURE 5 CLUTCH ASSEMBLY 400100 Part No Description Gty 400044 BRACKET Mowing Clutch 1 400099 BRACKET Clutch Mount 1 400080 BRACKET Transport Clutch 1 03608 PULLEY 2 200676 BUSHING 2 g 3 OO O NO O B W N gt SAA V FIGURE 6 BACKLAP GEAR ASSEMBLY 400104 Part No 400106 400105 02502 04020 400109 02148 200676 02034 02403 02303 Description BRACKET GEAR with Bushing 24 Tooth WASHER LOCKRING 3 4 PIN Gear SCREW Flat Head Slotted 5 167 18 X 3 4 BUSHING CAPSCREW 3 8 16X 3 4 WASHER Flat 3 8 LOCKWASHER 3 8 Gty ala a alo N NIAN gt IM250M 1 2000 250 NATIONAL IM25 Infield Mower NATIONAL MOWER COMPA 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 th
10. onal information will gladly be furnished by calling writing or e mailing the company Please furnish us with the model number serial number and date of purchase when contacting us about your machine Designations of right left front and rear are used in the position of the operator when mowing Assembly Instructions Carefully inspect your machine and crate for damage that could have occurred during shipment If damages or shortages are noted have the transportation company representative indicate this on the bill of lading Claims for shipping damages must be noted by the consignee at the point of designation and filed with the transportation company NATIONAL IM25 Infield Mower Carefully uncrate the machine 2 Attach the lower Handle Bar Assembly 1 Fig B to the Handle Bar Brackets 2 Fig A with pivot pins flatwashers and cotter pins from the loose parts bag 3 Insert Handle Adjustment Rods 3 Fig A into Lower Handle Bar Assembly and Adjustment Brackets 4 Fig A on countershaft assembly and secure with flatwashers and cotter pins from the loose parts bag Use the front holes in the adjustment brackets for the highest handle position and the rear holes for the lowest position 4 Pivot Upper Handle Bar Assembly 5 Fig A 6 B to align with holes in the lower handle bar assembly and fasten with four 5 16 24 x 1 1 2 cap screws and hex nuts o Hook Brake Rod Spring 6 Fig B to attaching tab on
11. t Right 1 53 400078 GEAR Reel 24 Tooth 1 54 400071 GUARD Right 1 55 400104 BACKLAP GEARS See Figure 6 1 56 400471 ADJUSTING PLATE Engine 1 5r 03638 PULLEY Engine Inside 1 58 03939 BELT Gates 6832 2 59 400320 GUARD Right Inside 1 60 07513 ENGINE Briggs amp Stratton 3 5 H P 1 61 200256 ADJUSTING SCREW amp NUT 1 62 06136 BEARING 6 O SID OI Alo a D 3 O D FIGURE 2 GROUND DRIVE COUNTERSHAFT ASSEMBLY 400040 Part No 03117 03634 06136 400020 400063 400069 400095 202436 Description SPROCKET 14 Tooth PULLEY BEARING PLATE Bearing Carrier Short PLATE Bearing Carrier Long RETAINER Clutch Cable COUNTERSHAFT Roller Drive Key 9 Woodruff 2 a ad SIN IM250M 1 2000 250 NATIONAL IM25 Infield Mower S O N G FIGURE 3 REEL DRIVE COUNTERSHAFT 400041 Item Part No Description Gty 1 202839 SPROCKET 24 Tooth 1 2 03634 PULLEY 1 3 06136 BEARING 2 4 400020 PLATE Bearing Carrier Short 1 5 400063 PLATE Bearing Carrier Long 1 6 400069 RETAINER Clutch Cable 1 T 400096 COUNTERSHAFT Reel Drive 1 8 202436 KEY 9 Woodruff 1 11 Item O O NO OF AION gt NO FIGURE 4 REAR ROLLER ASSEMBLY 400038 Part No 400037 400097 400013 400014 04531 09077 202436 06140 02502 Description TUBE Roller SHAFT Roller RING Pinion RETAINER Pinion SPRING Pinion Pawl PAWL Pinion KEY 9 Woodruff BEARING WASHER Q
12. the mower top plate 6 Set attachment pins of Grass Basket 7 Fig A in grooves of Basket Brackets 8 Fig A Initial Starting Procedure 1 Engine crankcase oil has been installed at the factory However it is recommended that the engine be inspected for presence of oil at the proper level see engine manual before starting 2 Fill engine gas tank with unleaded regular gasoline 3 Engage Parking Brake 9 Fig A by pulling lever backand over center to lock Starting Instructions 1 Turn the red Fuel Valve 10 Fig A located on the right side of the engine 1 4 turn clockwise to switch fuel supply to On 2 Press Ignition Switch 11 Fig B located on the front of the engine to the On position 3 Slide Choke 12 Fig A which is the white lever at the back of the engine to the right or On position 4 Set Throttle Control 13 Fig A half way between fast full forward and slow full back 5 Pull Rope Start Handle 14 Fig A sharply and start engine EMON Do not pull back Drive Bail Handle 15 Fig A or move Clutch Handle 16 Fig A forward when starting engine 6 Move choke lever left to the Off position as soon as the engine starts Operating Instructions 1 Unlock Parking Brake 9 Fig A by moving lever forward 2 Pull Drive Bail 15 Fig A slowly back to handle to move forward CAUTION Make sure your path is clear before moving forward 3 Adjust Throttle Control to
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