A starter for an engine of a motorcycle is provided. Wherein, a sensing part controls through wireless communication an on/off sensor, and a main switch lock for switch-over; and by the switch-over of the main switch lock, the engine is started; and the main switch lock can be switched ON without making the sensing part and sensor to sense when an engine cut-off location of the main switch lock is changed to ON so that the engine goes again to ON state from OFF and hence the engine is started.