A system includes a fuel tank, an internal combustion engine, a generator, a recoil starter, a control unit, an injector, a fuel pump, an igniter, and a detection unit that detects the crank angle of the internal combustion engine. The control unit, in a starting period of the internal combustion engine, which is started using the recoil starter, supplies electric power to the igniter, the injector, and the fuel pump such that a power supply period of the igniter will not overlap a power supply period of the injector and the fuel pump, using the crank angle as a reference.