5. Adjust spring extension.

a.With the traction drive clutch lever disengaged, loosen the jam nut on the cable adjuster.

b.Turn the adjuster body up the cable for more spring extension.

c.Turn the adjuster body down the cable for less spring extension.

d.Finger tighten the jam nut, and then hold the adjuster body with pliers and tighten the jam nut with wrench.

6.Measure the extension of the traction drive clutch spring.

7.Repeat step 5 until traction drive clutch spring lengthens 1/2 -11/16 in.(12.7-17.5 mm) when the traction drive clutch lever is engaged.

8.With the clutch disengaged, check that there is more than 1/32 in. (0.8 mm) clearance between friction disc and drive plate assembly.

IMPORTANT: If spring length cannot be adjusted within specified range, see your Dealer for repairs.

ATTACHMENT DRIVE BELT REPLACEMENT

Remove old attachment drive belt:

1.Shut off engine and allow to cool completely.

2.Remove belt cover (Figure 33).

3.Remove hair pin under the control panel connecting the discharge chute rod from the chute rotation lever and slide the discharge chute rod forward.

IMPORTANT: Disconnect chute lock cable and deflector cable, if equipped.

4. Remove belt finger (Figure 34).

IMPORTANT: Use care when rotating the belt fingers. DO NOT bend belt fingers out of shape.

5.Remove attachment drive belt from engine sheave (it may be necessary to turn engine sheave using recoil starter handle).

IMPORTANT: To avoid bending bottom cover when tipping unit apart, support handlebars firmly or tip unit up on housing and remove bottom cover by removing six cap screws before separating unit.

6. Support Sno-Thro frame and housing.

1

3

2

1.Pivot Pin

2.Housing Cap Screws

3.Belt Cover

OS7215

Figure 33

 

2

1

3

 

4

9

8

7

 

5

6

1. Traction Drive Belt

6. Attachment Pulley

2. Engine Sheave

7. Attachment Idler

3. Attachment Drive Belt

Adjustment Nut

4. Belt Finger

8. Traction Belt Idler

5. Attachment Belt Idler

9. Traction Drive Pulley

CAUTION: Always support Sno-Thro frame and blower housing when loosening the cap screws holding them together. Never loosen cap screws while unit is in service position.

7.Remove hex bolts securing housing to frame (three on each side). Tip housing and frame apart on pivot pins (Figure 33).

8.Remove attachment drive belt from attachment pulley (hold brake away from belt).

Figure 34

OS7220

GB - 27