Snowmobile clutches have a difficult life. At the flip of a throttle lever, they go from idling to transmitting full power from the engine’s crankshaft to the chassis’ jackshaft. They must perform shifting duties under harsh conditions and rider styles from mild to wild.
Poorly maintained or worn out clutches can steal torque and horsepower from the powertrain. Issues often include misalignment of the clutches, worn bushings or rollers, or worn or incorrect drive belts. The basic flyweight-style drive clutch dates back to the early 1970s. The principles of operation apply to most any flyweight-style drive clutch used by Arctic, Polaris and Yamaha, plus the Comet series of clutches from the vintage 1972 model 100-C to the modern 108-EXPs.