The clutch's internal cam allows the connection between the engine and the wheels to be interrupted when necessary. Squeezing the clutch lever activates the internal mechanism that releases the clutch plates, making it possible to shift gears without damaging the system. It's also important for maintaining control of the motorcycle during deceleration or when you need to stop without turning off the engine. Be sure to periodically check and lubricate the moving components of the clutch system, including the cam, to reduce wear caused by friction. A smooth clutch is a reflection of a well-maintained cam.