A closer look at the starter motor 31200-449-008 – Honda CX500, GL500, CX650, GL650, CX400, GL400

This is the starter motor with the black body, found on many of the CX/GL variants. Looks like this:

The thick cable carrying power to the unit is connected under a rubber sheath:

Pull it back to reveal a nut:

A 10mm spanner or socket should undo this:

Other items of interest around the body are the end cap with manufacturer markings:

Mitsuba SM-228, 12V, 0.6KW (600W). On the side of the end cap appears to be a faint inscription:

No idea about the significance of that (34S?). There are four flush screws/bolts around the body:

There’s an O-ring around the shaft which goes into the motor, part number 91309-300-000:

An 11mm circlip sits around the end, part number 94510-11000:

Therese two long bolts that run the length of the body:

Note the two dots – meaning they’re JIS, I think – any correction welcome:

Undoing the two long bolts can sometimes be a little tough – we cheat and use a 12v impact wrench:

The bolts are part number 31205-413-780, the 5mm spring washer part number 94111-05000:

Once those bolts are out, the end cap simply pulls off:

Carbon residue:

Closer:

There’s a washer in the end:

Inside the body looks like this:

The other end cap also simply pulls off now:

Inside the end cap:

Springs in front here, brushes behind:

This piece is held in by a single little bolt:

Removed:

Incidentally, the four screws around the body hold these in:

Removed:

We’ll come back with some more photos of the brushes and some part numbers in an update.

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