104
OPERATING INSTRUCTIONS
Principle of Operation
Propulsion
Depressing throttle lever increases engine RPM causing the drive
pulley to engage. Depending on models engine RPM must be be-
tween 2500 and 4200 before drive pulley engagement will occur.
Outer sheave of drive pulley moves toward inner sheave, forcing
drive belt to move upward on the drive pulley and simultaneously
forcing the sheaves apart on the driven pulley.
The driven pulley senses the load on the track and limits the belt
movement. The result is a continuous change in the ratio of the two
pulleys which maximizes acceleration and forward movement of the
vehicle.
Power is transferred to the track through the chaincase and drive axle.
WARNING
Proceed with pre-operation check list before riding.
WARNING
Operator and passenger (if applicable) must be properly seated
before riding.
WARNING
Do not operate engine with hood open or belt guard removed.
WARNING
Always use a wide-base snowmobile mechanical stand to
properly support vehicle during any track verification. Slowly
accelerate engine in order to rotate track at very low speed
when it is not on ground.
Mmo2003-003a.book Page 104 Tuesday, March 19, 2002 2:22 PM
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