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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
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.
5
NOTE: Before starting the snow-
mobile in extremely cold tempera-
tures, the drive belt should be
removed and warmed up to room
temperature. Once the drive belt is
at room temperature, 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
failure.
Cold Drive-Away Function
There is a "cold drive-away" function
incorporated within the engine.
NOTE: When cold-starting the
engine, the coolant temperature
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 dis-
play will continue to flash, and the
RPM "limit" of the engine will
increase allowing the snowmobile
to move without full-throttle opera-
tion. When the engine reaches
proper operating temperature, the
coolant temperature warning icon
and the LOW TEMP display will go
out.
Speedometer/Tachometer/
Digital Gauge
A
B
Upper Left
G
Button
Lower Left
Button
E
C
D
Upper Right
Button
G
H
Lower Right
Button
F
CWI-050A
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