The determine demonstrates the vacuum clutch mechanism. This type of clutch uses the present vacuum in the engine manifold to operate the clutch. The vacuum clutch contains a reservoir, non-return valve, vacuum cylinder with piston, and solenoid valve.  The springs maintain the flywheel moving ahead or backward through the frictional https://clutchkereta97418.ampblogs.com/clutch-kereta-no-further-a-mystery-69729879