The figure shows the vacuum clutch system. This sort of clutch works by using the existing vacuum within the engine manifold to operate the clutch. The vacuum clutch includes a reservoir, non-return valve, vacuum cylinder with piston, and solenoid valve.  Given that the torque is decreased, so the power decline https://simoncrdox.thelateblog.com/33551504/the-fact-about-clutch-kereta-that-no-one-is-suggesting