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KINROAD 150 SERVICE MANUAL
VERSION 1, DEC., 2005
BELT DRIVEN CVT MECHANISM INSPECTION AND SERVICING GENERAL INTRODUCTION
The belt driven CVT mechanism is made up of two belt pulleys (the drive belt pulley and the driven belt
pulley) whose diameter can be changed, and a notched driven belt. The driving belt pulley is mounted on
the engine crankshaft, and the driven belt pulley connects with the rear driven mechanism.
Its basic operational principle is to realize automatic CVT by the diameter
changes (the transmission ratio changes) of the driving and driven belt
pulley.
When the diameter of the driving belt pulley changes form small to big,
proportionally the diameter of the driven belt pulley changes from big to
small (because the perimeter of the driven belt is constant). AT this time
the speed increases. On the contrary, the speed decreases.
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