Honda TRX450R Service Manual page 488

ELECTRIC STARTER (TRX450ER)
Check the bushing in the rear cover for wear or
damage.
BUSHING
Check for continuity between the insulated brush
and cable terminal.
There should be continuity.
CONTINUITY:
Check for continuity between the cable terminal and
rear cover.
There should be no continuity.
INSULATED BRUSH
NO CONTINUITY:
Do not use emery
or sand paper on
the commutator.
Check the commutator bars of the armature for dis-
coloration.
COMMUTATOR
BARS
23-8