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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 19 and 20).
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. Remove belt cover.
IMPORTANT: The clutch cable must be slack when
clutch lever is disengaged.
2. Adjust cable slack.
a. Position the upper cable adjuster on the
mounting bracket, if necessary, so the cable
adjuster and seal do not contact the pulley
(Figure 22).
b. With the clutch lever disengaged, loosen the
control cable mounting nuts on the
attachment clutch arm (Figure 22).
c. Pull up on the cable body to remove cable
slack.
d. Finger tighten mounting nuts and then loosen
the top nut five turns.
e. Tighten the bottom nut with a wrench.
3. 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 23. 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.
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.
1
Figure 22
OS2460
3
1.Upper Cable Adjuster
2.Right Hand Handlebar
3.Attachment Clutch Arm
4.Attachment Clutch Cable
5.Cable Mounting Nuts
5
2
4