The figure reveals the vacuum clutch mechanism. Such a clutch employs the prevailing vacuum while in the motor manifold to function the clutch. The vacuum clutch is made of a reservoir, non-return valve, vacuum cylinder with piston, and solenoid valve.  Their reason is to connect or disconnect the engine to https://claytonvxvtq.win-blog.com/13465556/rumored-buzz-on-clutch-plate