In a manual transmission, the responsibility of the clutch is to engage and disengage the transmission from the engine.
When a vehicle is running, the engine is always turning. The transmission connects to the engine and supplies power to the wheels, but this linkage cannot be constant, since a vehicle is not always moving.
Manual transmissions allow drivers to shift between gears manually while simultaneously regulating power and speed. Manual transmissions have a clutch, flywheel, gear selector fork, collars, gears, and shafts.
A transmission is responsible for transferring power from the engine to the drive wheels and helping the engine accommodate a range of speeds.
Whether your vehicle has an automatic or manual transmission, the responsibility of the transmission remains the same: route power from the engine to the drive wheels.