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IM25OM-1/2000-250

4

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 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 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.

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.

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.

Summary of Contents for IM25

Page 1: ...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 IM25 INFIELD MOWER OWNER S MANUAL ...

Page 2: ...st be noted by the consignee at the point of designation and filed with the transportationcompany 1 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 flat washers and cotter pins from the loose partsbag 3 Insert Handle Adjustment Rods 3 Fig A into Lower Handle Bar Assembly and Adjustment Brackets 4 Fig A on countershaft ...

Page 3: ...n 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 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 Nu...

Page 4: ...NATIONAL IM25 Infield Mower 5 FIGURE A FIGURE B FIGURE C ...

Page 5: ...lap assembly pivot assembly rearward and tighten hex nut as shown in Figure D 5 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 themovingblades 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 y...

Page 6: ...ress and phone number 2 Model Number and Serial Number located on the rear side of the top plate 3 PartNumber itisrecommendedthatthecorrectnumberbeverified 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 Par...

Page 7: ...IM25OM 1 2000 250 8 FIGURE 1 ...

Page 8: ...________________________________________________________________________________ ___________________________________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________________________________ _______________________________________...

Page 9: ..._______________________________________________________________________________________________ FIGURE 2 GROUND DRIVE COUNTERSHAFT ASSEMBLY 400040 Item Description Part No Qty 1 03117 SPROCKET 14Tooth 1 2 03634 PULLEY 1 3 06136 BEARING 2 4 400020 PLATE Bearing Carrier Short 1 5 400063 PLATE BearingCarrier Long 1 6 400069 RETAINER ClutchCable 1 7 400095 COUNTERSHAFT RollerDrive 1 8 202436 Key 9 Woo...

Page 10: ...__________________________________________________________________________________________________________ FIGURE 3 REEL DRIVE COUNTERSHAFT 400041 Item Description Part No Qty 1 202839 SPROCKET 24Tooth 1 2 03634 PULLEY 1 3 06136 BEARING 2 4 400020 PLATE Bearing Carrier Short 1 5 400063 PLATE BearingCarrier Long 1 6 400069 RETAINER ClutchCable 1 7 400096 COUNTERSHAFT ReelDrive 1 8 202436 KEY 9 Wood...

Page 11: ..._______________________________________________________________________________________________________________ FIGURE 4 REAR ROLLER ASSEMBLY 400038 Item Description Part No Qty 1 400037 TUBE Roller 2 2 400097 SHAFT Roller 1 3 400013 RING Pinion 2 4 400014 RETAINER Pinion 2 5 04531 SPRING Pinion Pawl 2 6 09077 PAWL Pinion 2 7 202436 KEY 9 Woodruff 2 8 06140 BEARING 4 9 02502 WASHER 1 ...

Page 12: ...________________________________________________________________________________________ FIGURE 5 CLUTCH ASSEMBLY 400100 Item Description Part No Qty 1 400044 BRACKET MowingClutch 1 2 400099 BRACKET Clutch Mount 1 3 400080 BRACKET TransportClutch 1 4 03608 PULLEY 2 5 200676 BUSHING 2 ...

Page 13: ...______________ ___________________________________________________________________________________________________________________________________________ FIGURE 6 BACKLAP GEAR ASSEMBLY 400104 Item Description Part No Qty 1 400106 BRACKET 1 2 400105 GEAR with Bushing 24 Tooth 2 3 02502 WASHER 4 4 04020 LOCKRING 3 4 2 5 400109 PIN Gear 2 6 02148 SCREW Flat Head Slotted 5 16 18 X 3 4 2 7 200676 BUSH...

Page 14: ...engines enginepartsortireswhicharecovered 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 IMPLIEDWARRANTIES INCLUDINGTHOSEOFMERCHANTABILITYAND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO ONE YEAR FROM PURCHASE OR 45 DAYS IF THE PRODU...

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