An electromagnetic clutch selectively transferring engine power for a manual transmission includes a stator fixedly connected to an engine crankshaft via a flywheel, having an electromagnet and a lining drum, a clutch rotor for transmitting the engine power to a transmission power shaft by means of the magnetic force of the stator, a lining selectively contacting or releasing the lining drum of the stator, and a lining arm being rotated so that an end portion thereof presses the lining to the lining drum for physical contact between the lining and the lining drum.