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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 BELTS
REPLACEMENT
Remove old attachment drive belts:
1. Shut off engine, remove key, disconnect
spark plug wire and allow unit to cool
completely.
2. Remove belt cover (Figure 40).
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 38).
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.
7. Remove hex bolts securing housing to
frame (three on each side). Tip housing
and frame apart on pivot pins
(Figure 40).
8. Remove attachment drive belts from
attachment pulley (hold brake away from
belts).
Figure 39
1/2 – 11/16 in.
(12.7 – 17.5 mm)
1. Traction Drive Clutch Spring
2. Jam Nut
3. Adjuster Body
1
2
3
OS7205
OS7210
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.