mmo2005-002b_1.book Page 88 Monday, February 2, 2004 4:07 PM
OPERATING INSTRUCTIONS
WARNING Proceed with pre-operation check list before riding.
Principle of Operation Propulsion Depressing throttle lever increases engine RPM causing the drive pulley to engage. Depending on models engine RPM must be between 2500 and 4200 before drive pulley engagement will occur. The outer sheave of the drive pulley moves toward the inner sheave, forcing the 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 an optimized speed ratio between engine RPM and the speed of the vehicle at any time.
WARNING Never operate engine without belt guard securely installed or, with hood or access/side panels open or removed. Power is transferred to the track through the chaincase or gearbox and drive axle.
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. Turning As the handlebar is rotated to right or left, the skis are turned right or left to steer the snowmobile.
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