Abstract: An ignition resumption control unit (40) is disposed that resumes control of an ignition plug (14) if a first predetermined time has elapsed or if engine rotation number has fallen below a threshold value, after receiving an engine stop signal. The ignition resumption control unit (40) executes the control of the ignition plug (14), based on resumption ignition timings (Tg(R-on)) that are timing deviating from an entire ignition timing range set in a normal working area of an engine body (2).

Abstract: A blower (1) comprises a blast fan (20) provided within a casing (10), a driving unit (30) for rotationally driving the blast fan (20), a dust-proof cover (60) provided so as to cover an air intake (11) of the casing (10) and a drive stop mechanism (70) for stopping the driving unit (30). The drive stop mechanism (70) comprises a depressing lever (72) that depresses a pressure sensor (71) when it is pressed by a projection (65b) of the dust-proof cover (60) that is inserted into an attachment hole (12) of the casing (10) and a control section (73) for stopping the driving unit (30) when the pressure acting on the pressure sensor (71) from the depressing lever (72) decreases. This structure allows safety of the blower to be improved when the dust-proof cover (60) is removed from the air intake (11) and the air intake (11) is exposed to the outside because the rotation of the blast fan (20) automatically stops.