ski doo primary clutch

A Ski-Doo primary clutch is a key component of a Ski-Doo snowmobile's drivetrain. The primary clutch is responsible for transferring power from the engine to the drive belt, which then turns the secondary clutch and propels the sled forward.

The primary clutch consists of two main parts: the stationary sheave and the movable sheave. The stationary sheave is bolted to the engine's crankshaft, while the movable sheave is connected to the drive belt. As the engine RPMs increase, the movable sheave is forced outward by centrifugal force, causing the drive belt to engage and transfer power to the secondary clutch.

Ski-Doo primary clutches are designed to be adjustable, allowing riders to fine-tune the engagement and overall performance of their sled. Common adjustments include changing the weight of the clutch arms or adding or removing shims to adjust the spring tension.

Regular maintenance of the primary clutch is important to ensure proper operation and longevity. This includes cleaning and lubricating the clutch, inspecting the belt for wear, and replacing any worn or damaged parts.