Where are semi-centrifugal clutch weights typically found?

Semi-centrifugal clutch weights are typically found on the release levers. The function of these weights is to provide additional clamping force to the clutch as engine speed increases. As the engine speed rises, the centrifugal force causes the weights to move outward, which in turn affects the release levers to apply more pressure to the clutch diaphragm spring. This design helps to enhance engagement and disengagement characteristics of the clutch during various operating conditions, particularly in situations where more power delivery is required from the engine.

In the context of clutch operation, this adjustment is crucial for improved performance and smooth engagement, making it important for maintaining the balance between power transmission and drivability. The other components mentioned do not typically have semi-centrifugal weights. For example, the flywheel serves as a mounting surface for the clutch assembly, the pressure plate springs provide the initial clamping force, and the clutch shaft serves as the axis for the entire assembly, but none are responsible for the additional clamping force provided by the semi-centrifugal weights during higher RPMs.