4.Install new traction drive belt onto attachment pulley and engine sheaves.

5.Pull the drive plate assembly toward the friction disc and tighten the stop bolt.

NOTE: Make sure the drive plate assembly return spring remains connected to the frame.

6.Replace attachment drive belts (Attachment Drive Belts Replacement on page 27.

FRICTION DISC REPLACEMENT

1.Place unit into service position.

2.Remove bottom cover by removing six hex bolts.

3.With axle locked, hold one wheel so friction disc will not rotate and remove three cap screws holding friction disc to carrier.

4.Remove both wheels.

5.Remove right and left bearing flanges from frame.

6.Slide hex shaft to the left enough to remove pinion sprocket from hex shaft.

7.Slide hex shaft to the right enough to remove friction disc.

8.Slide new friction disc onto hex shaft.

9.Install pinion sprocket and chain on hex shaft, then replace bearing flanges.

10.Hold wheel so friction disc will not rotate and secure new friction disc to carrier with three hex screws removed in step 2.

11.Replace wheels.

12.Replace bottom cover.

13.Adjust traction drive clutch (see Traction Drive Clutch Adjustment on page 27).

1

2

3

1

4

 

 

1

5

8

 

 

1

7

6

 

1. Cap Screw

 

5. Bearing Cap

2. Hex Screw

 

6. Idler Hex Shaft

3. Friction Disc

 

7. Drive Plate Assembly

4. Pinion Sprocket

 

8. Stop Bolt

Figure 40

OS7225

 

BATTERY (926023, 500, 501)

Charging

1.Place unit on a level surface and shut off engine.

2.Disconnect negative (–) cable first, then positive

(+)cable.

3.Loosen wing nut and remove battery. Place battery on bench or other well-ventilated place.

4.Connect positive (+) lead of charger to positive

(+)terminal, and negative (–) lead to negative (–) terminal.

5.Charge the battery at two and a half amps for ten hours.

6.Reinstall battery into unit and connect positive (+) cable first, then negative (–) cable.

Replacing

Use U1R or U1L; 240 CCA minimum @ 0°F type batteries.

TRACK TENSION ADJUSTMENT (926021, 022, 023)

Check the track tension by applying pressure on the track midway between the upper and rear track rollers. Deflection should be approximately 3/8 in. (9.6 mm). See Figure 41.

If deflection is excessive, tighten the track tension.

3/8 in.

(9.6 mm)

Figure 41

OS7226

If unit pulls to the left or right when a straight path is desired adjust the track tension. If the unit is pulling to the left, tighten the left track adjuster. If the unit is pulling to the right, tighten the right track adjuster.

To adjust (Figure 42):

1.Loosen the outer jam nut.

2.Tighten the adjuster nut to tighten the track tension.

Loosen the adjuster nut to reduce track tension.

3.Tighten the jam nut.

4.Check that unit tracks straight with no pulling to either side.

GB - 29