Drive Belt - Yamaha SXV4NP Operator's Manual

2. Accelerate to 48-64 km/h (30-40
mph); then compress brake lever to
decelerate to a stop.

NOTE: Lightly apply the brake lever
to come to an easy stop; do not over-
apply brakes or "lock up" the track.
3. Repeat procedure 10-15 times allow-
ing some cooling between stops.

NOTE: Do not repeat too soon or
too aggressively as to get the brake
disc "red hot."
! WARNING
Do not attempt sudden stops or put
yourself into a situation where a sud-
den stop will be required until the
brake pads are properly burnished.

NOTE: This procedure stabilizes
the pad material and extends the life
of the pads.

Drive Belt

The drive belt transfers power from the
drive clutch to the driven clutch. If the
belt is worn, cracked, or stretched, maxi-
mum power will not be transmitted and
the belt could also fail and therefore must
be replaced. Periodic checks (at least
once a month under normal usage) of two
drive belt specifications are essential.

NOTE: Drive belts should be pur-
chased from an authorized Yamaha
Snowmobile dealer, as Yamaha drive
belts are made to exact specifica-
tions and of quality material. Belts
made by other manufacturers may
not be of the same specifications or
quality and, therefore, usage could
result in poor performance and pre-
mature belt failure.

NOTE: Before starting the snowmo-
bile in extremely cold temperatures,
the drive belt should be removed and
warmed up to room temperature.
Once the drive belt is at room tem-
perature, install the drive belt.
36
Also, new drive belts have a break-in
period of 40 km (25 miles). After install-
ing a new drive belt, drive the snowmo-
bile for 40 km (25 miles) at 3/4 throttle or
less. By revving the engine up and down
(but not exceeding 100 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 flexibility 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 failure.

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.
Removing (800)
1. Set the brake lever lock; then
remove the left-side access panel.
2. Thread Removal/Installation Tool
clockwise into the driven clutch
until the movable sheave opens far
enough to remove the drive belt.

NOTE: Verify the driven clutch
movable sheave is not in the reverse
notch by rotating the sheave coun-
terclockwise.
3. When the sheaves are fully apart,
pull up on drive belt and roll belt
over stationary sheave until it is free
of the driven clutch.
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