CMS-Japanese Motorcycle Supply Parts

A closer look at the starter motor (31200-449-008)

Before using this site please read the site disclaimer. Also please note that any links provided may be part of an affiliate programme (viz. eBay, Amazon) which helps support the site as I will earn a commission when visitors make a qualifying purchase.

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:


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:


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


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

Search MotoFaction:

Follow us on Facebook!

Follow us on Instagram!

CMS-Japanese Motorcycle Supply Parts

Search MotoFaction:

In 2019 the server has had to double in capacity to support the growing site... please consider dropping the site a donation to help cover the costs! Check out our Patreon for support options, buy a shirt, buy our apps, use my NordVPN affiliate link to sign up to their service or donate via Paypal:

Paypal $5 link ->>
Paypal $10 link ->>