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1-M6×90 bolt×2 2-O ring×2 3-O ring 4-starter motor front cover 5-gasket 6-rectangular sealing ring 7-starter motor
outer shell 8-rectangular sealing ring 9-electric pole 10-screw ×2 11-Negative brush×2 12-Volute spring×4 13-Positive
brush×2 14-Brush frame 15-Brush holder insulation gasket 16-Starter motor back cover 17-Insulation gasket 18-Nut×2
19- Gasket
Examination
Starter motor front cover
：
Check whether the oil seal of the front cover is worn and
damaged;
Also check whether the outer ring fits tightly with the front
cover.
Motor back cover
：
Check whether the bushing of the back cover is worn
or damaged;
Check whether the brush is damaged, measure the
length of the brush, and use the limit11.5mm（0.45in）.
Check the connectivity of the back cover as follows：
The positive brush is connected to the end of the
cable; the cable end is not connected to the back cover;
the negative brush is connected to the back cover.
Denki
：
Clean the metal scraps on the electric screw, and check
whether the commutator bar is discolored;
Check that there should be a gap between the
commutator and the crankshaft.
Positive brush Negative brush
Bushing
Oil seal
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