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Also, new drive belts have a break-in
period of approximately 40 km (25 miles).
After installing a new drive belt, drive the
snowmobile for 40 km (25 miles) at 3/4
throttle or less. By revving the engine up
and down (but not exceeding 97 km/h [60
mph]), the exposed cord on the side of a
new belt will be worn down. This allows
the drive belt to gain its optimum flexibil-
ity and will extend drive belt life.
CAUTION
Never run the engine with the drive
belt removed. Excessive revving of
the engine could result in serious
engine damage and drive clutch fail-
ure.
Removing Drive Belt
NOTE: Changing a drive belt can
be done by the snowmobile owner if
qualified to do so. If the owner does
not feel qualified, take the snowmo-
bile to an authorized Yamaha Snow-
mobile dealer for this service. This
service is at the discretion and
expense of the snowmobile owner.
1. Place the snowmobile on a level sur-
face and engage the brake lever
lock.
2. Open the left-side access panel and
remove the belt guard assembly.
3. Rotate the driven clutch sliding
sheave clockwise (1); then push
towards the engine (2) so it will sep-
arate from the fixed sheave.
4. Remove the drive belt by pulling it
up and over the fixed sheave.
2
Installing Drive Belt
2
1
SNO-336
NOTE: Before installing the drive
belt, use a suitable cleaning sol-
vent
to
thoroughly
sheaves.
1. Open the left-side access panel.
2. Rotate the driven clutch sliding
sheave clockwise (1); then push
towards the engine (2) so it will sep-
arate from the fixed sheave.
3. Install the drive belt (3) between the
sheaves.
2
4. Install the left-side access panel.
WARNING
Never operate the snowmobile without
the access panel secured in place.
clean
the
2
1
SNO-326
3
SNO-327
32
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