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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.