Patent ID: 8803400

Claim:
An electric motor equipped with a yoke which accommodates a rotor, and a bracket with a rear end coupled to the yoke and a front end coupled to an external surface of an engine case accommodating an engine operation unit, in which an output shaft of the rotor penetrates the bracket and extends into the engine case, comprising: a commutator provided on an outer periphery of the output shaft of the rotor for applying voltage to the rotor; a pair of columnar brushes which abuts against the commutator at one end thereof; a pair of tubular brush holders provided at a rear side of the bracket for storing the brush; and a pair of biasing elements which bias the brush stored in the brush holder to the commutator side; wherein the brush holder, in a state where the bracket is fixed to an assembling tool with an edge-shaped jig descending to a position positioned preliminarily, with a rear side of the bracket being the upper surface, has a slit-shaped notch unit formed at a position corresponding to the position to which the jig descends at an upper side surface of the brush holder, and the brush has a concave groove which is formed so as to overlap the notch unit at a position in which the brush stored in the brush holder does not abut against the commutator, and to which the jig is fitted.