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clutch - a coupling that connects or disconnects driving and driven parts of a driving mechanism; this year's model has an improved clutch. foot lever, foot pedal, treadle, pedal - a lever that is operated with the foot.
Feb 9, 2007 - 4:17:00 PM - Print. The fan clutch is an automatic device that is often used in a vehicleâs cooling system. So, when the engine is cool or even when it is at a normal operating temperature, the fan clutch will partially disengage the engineâs radiator cooling fan (which is mechanically driven).