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GB - 21
TRACTION DRIVE BELT REPLACEMENT
NOTE: Housing and frame must be tipped apart and
attachment drive belt removed from engine sheave in
order to change traction drive belt (Figures 21, 22, 23
and 24).
1. Remove attachment drive belt (See Remove
Attachment Drive Belt on page 19).
2. Pull idler away from traction drive belt and
remove belt from idler, camshaft pulley and
driven pulley (it may be necessary to turn
camshaft pulley using recoil starter handle).
NOTE: To gain clearance, engage traction clutch and if
necessary pull back attachment idler arm.
3. Replace traction drive belt.
4. Replace attachment drive belt (See Replace
Attachment Drive Belt on page 20).
ATTACHMENT CLUTCH/BRAKE
ADJUSTMENT
1. Check attachment clutch lever measurement.
a. Start engine and run at full throttle.
b. Slowly squeeze the attachment clutch lever
until auger shaft begins to rotate.
c. Measure the distance from the end of the
clutch lever to the handlebar as shown in
Figure 25. The distance between the clutch
lever and the handlebar should be 6 in. - 7 in.
(15,2 cm - 17,8 cm).
d. Shut off engine.
e. If clutch lever measurement is within
specified range, no adjustment is necessary.
If clutch lever measurement is outside the
specified range, follow steps 2 - 7.
Figure 23
1.Attachment Drive Belt
2.Engine Sheave
3.Traction Drive Belt
4.Camshaft Pulley
5.Traction Belt Idler
6.Attachment Pulley
7.Attachment Idler Nut
8.Attachment Belt Idler
9. Belt Finger
OS7245
1
2
3
4
5
6
78
9
932045
Figure 24
1/16 to 1/8 in.
(1.6–3 mm)
1/16 to 1/8 in.
(1.6–3 mm)
1. Belt Finger
2. Belt
1
2
2
1
OS7250
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.
WARNING: IMPROPER ADJUSTMENT
could result in unexpected movement of
auger and impeller causing death or serious
injury. AUGER / IMPELLER MUST STOP
within 3 seconds when Attachment
Clutch/Impeller Brake Lever is released.
WARNING: Adjustment procedure requires
the engine to be run with the belt cover off.
AVOID INJURY. Read and understand the
entire Safety section before proceeding.