A mower includes an engine which is a power source for a drive wheel and a mowing mechanism. A drive system for the mower includes: a first control unit that controls operation and stop of the engine； a first power transmitting mechanism that performs transmission of power between the engine and the drive wheel； a second power transmitting mechanism that performs transmission of power between the engine and the mowing mechanism； and a second control unit that controls the second power transmitting mechanism. The first control unit also controls the first power transmitting mechanism. A signal transmitter is provided which transmits a control signal between the first control unit and the second control unit.
