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 39).

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

5.Remove attachment drive belts 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.

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. Tip

housing and frame apart on pivot pins (Figure

1

 

4

8

2

 

3

 

9

5

 

7

 

6

1. Traction Drive Belt

6. Attachment Pulley

2. Engine Sheave

7. Attachment Idler

3. Attachment Drive Belts

Adjustment Nut

4. Belt Finger

8. Traction Belt Idler

5. Attachment Belts Idler

9. Traction Drive Pulley

38).

8. Remove attachment drive belts from attachment

Figure 39

OS7221

pulley (hold brake away from belts).

1

3

2

1.Pivot Pin

2.Housing Cap Screws

3.Belt Cover

OS7215

Figure 38

Install new attachment drive belts:

1.Place new attachment belts onto attachment pulley.

NOTE: Holding down the attachment clutch lever will make it easier to reconnect the housing and frame.

2.Tip housing and frame back together and secure with hex bolts.

3.Place belts onto engine sheave.

4.Reposition and secure belt fingers.

IMPORTANT: With clutch lever engaged, belt finger on the side opposite the belt idler should be less than 1/8 in. (3 mm) from belts, but not touching the belts. Adjust belt finger as necessary.

5.Check adjustment. See Check Belt Finger Clearance on page 26

WARNING: AUGER / IMPELLER MUST STOP within 5 seconds when attachment clutch lever is released or unit damage or serious injury may result.

6.Reconnect chute crank and secure with spring clip. Reconnect chute lock cable and deflector cable.

7.Replace belt cover.

TRACTION DRIVE BELT REPLACEMENT

NOTE: Replacement will be easier with housing and frame tipped apart and bottom cover off.

1.Remove attachment drive belts (see Attachment Drive Belts Replacement on page 27).

2.To gain belt clearance, back out the stop bolt from the frame until the drive plate assembly can swing past it (Figure 40).

3.Pull idler away from traction drive belt and remove belt from idler pulley, engine sheave and driven pulley (it may be necessary to turn engine pulley using recoil handle).

GB - 28