| 摘要 |
[PROBLEMS] To provide a starter motor enabling the easy and accurate aligning of holes when an idle shaft is mounted. [MEANS FOR SOLVING THE PROBLEMS] The screw mounting hole (106) and a female screw part (105) are formed in the bearing part (98) of a gear cover (24) and the screw insertion hole (104) is formed in the idle shaft (89). The idle shaft (89) is fixed to the gear cover (24) by inserting a fixing screw (107) through the screw mounting hole (106) and screwing it into the female screw part (105) through the screw insertion hole (104). A positioning groove (108) in a predetermined position relation with the screw insertion hole (104) is formed in the end face of the idle shaft (89). When the positioning groove (108) is disposed perpendicularly to an engine mounting surface (111) and the idle shaft (89) is fitted to the gear cover (24), the screw mounting hole (106) is opposed to the screw insertion hole (104) and, when the fixing screw (107) is fitted, the confirmation of hole positions and the aligning of holes can be eliminated.
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