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Also, if the snowmobile is to remain on a
trailer after filling the gas tank, the bed of
the trailer must be maintained level to
prevent gasoline from draining out
through the gas tank vent hose.
! WARNING
Always fill the gas tank in a well-venti-
lated area. Never add gasoline to the
snowmobile gas tank near any open
flames or with the engine running. DO
NOT SMOKE while filling the gas tank.
Do not sit on the snowmobile without
first installing the gas tank cap.
Engine Break-In
The engine (when new or rebuilt)
requires a short break-in period before
the engine is subjected to heavy load con-
ditions.
This engine does not require any pre-
mixed fuel during the break-in period.
There is never a more important period in
the life of the engine than the first 500
km (300 miles).
Since the engine is brand new, do not put
an excessive load on it for the first 500
km (300 miles). The various parts in the
engine wear and polish themselves to the
correct operating clearances. During this
period, prolonged full throttle operation
or any condition that might result in
engine overheating must be avoided.
Operating your snowmobile for the first
time: Start the engine and let it idle for 15
minutes.
0-160 km (0–100 miles): Avoid pro-
longed operation above 6000 RPM.
160-500 km (100–300 miles): Avoid pro-
longed operation above 8000 RPM.
500 km (300 miles) and beyond: The
snowmobile can now be operated nor-
mally.
NOTE: After 800 km (500 miles) of
operation, the engine oil must be
changed and the oil filter replaced. If
any engine trouble should occur dur-
ing the engine break-in period,
immediately have a Yamaha dealer
check the snowmobile.
4
Drive Belt Break-In
Drive belts require a break-in period of
approximately 40 km (25 miles). Drive
the snowmobile 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
will allow the drive belt to gain its opti-
mum flexibility and will extend drive belt
life.
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 temper-
ature, install the drive belt.
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.
Cold Drive-Away
Function
There is a "cold drive-away" function
incorporated within the engine.
NOTE: When cold-starting the
engine,
the
coolant
warning icon will illuminate and the
LOW TEMP display on the readout
screen will begin to flash. With the
engine in this temperature range, the
RPM "limit" of the engine will be
below drive system engagement
speed. As the engine warms, the
coolant temperature warning icon
will begin to flash, the TEMP display
will continue to flash, and the RPM
"limit" of the engine will increase
allowing the snowmobile to move
without full-throttle operation. When
the engine reaches proper operating
temperature, the coolant tempera-
ture warning icon and the LOW
TEMP display will go out.
temperature
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