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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
during the engine break-in period,
immediately have a Yamaha dealer
check the snowmobile.
Drive Belt Break-In
Drive belts require a break-in period of 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 optimum 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 tem-
perature, 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.
Speedometer/
Tachometer/Digital
Gauge
A. Coolant Temperature
Indicator
The indicator and LOW TEMP display
will cease to flash when the engine
reaches proper operating temperature.
If the coolant temperature rises too far
above proper operating temperature, the
indicator will flash a warning (alert) and
the engine will "surge" to alert the opera-
tor. If the coolant temperature rises to a
critical point above proper operating tem-
perature, the indicator will cease flashing
and will remain constantly illuminated.
temperature
CWI-050A
5
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