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GB - 22
ATTACHMENT DRIVE BELT
REPLACEMENT
Remove Attachment Drive Belt
(Figures 16 and 17)
1. Shut off engine, remove key, disconnect
spark plug wire and allow unit to cool
completely.
2. Remove two screws securing belt cover
to unit and remove belt cover.
3. Remove spring pin from chute crank rod
assembly and separate.
4. Remove hardware holding chute strap to
engine and lift discharge chute off
housing.
5. Remove belt finger by removing cap
screws mounting belt finger to engine
(Figure 17).
6. 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 four cap screws
before separating unit.
7. Support Sno-Thro frame and housing.
8. Remove top two cap screws and loosen
lower cap screws holding blower housing
to frame (one on each side).
9. Separate housing from unit. Lower
handlebar on floor.
10. Remove attachment drive belt from lower
pulley (hold brake away from belt).
Replace Attachment Drive Belt
1. Place new belt onto lower pulley and
while holding brake out of way, tip unit
together.
2. Secure blower housing to frame with cap
screws.
3. Place belt onto engine sheave.
4. Make sure engine sheave and
attachment pulley align. If alignment is
necessary, loosen engine sheave set
screws, reposition sheave and retighten
set screws.
5. Replace belt finger.
IMPORTANT: BELT FINGER MUST BE
between 1/16 to 1/8 in. (1.6–3 mm) from belt
with attachment clutch engaged or belt
grabbing may occur causing impeller to rotate
while attachment clutch is disengaged
(Figure 17).
6. Adjust clutch per Attachment Clutch/
Impeller Brake Adjustment below.
7. Reinstall chute strap and mounting
hardware onto engine.
8. Replace chute crank and secure with
spring pin.
9. Replace belt cover and secure with cap
screws.
CAUTION: Always support
Sno-Thro frame and housing when
loosening the cap screws holding
them together. Never loosen cap
screws while unit is in service
position.
Figure 16
1. Housing Bolt
Holes
2. Belt Cover
3. Pinion and Gear
4. Spring Clip Pin
5. Chute Crank
6. Chute Strap
7. Chute Strap
Mounting
Hardware
8. Bottom Cover
1
2
3
4
5
6
7
8
OS0803