Checking The Brush Holder And Brush; Assembling The Starter Motor - Yamaha F30A Service Manual

– +
ELEC
3. Measure the commutator undercut a.
Replace the armature if below specifica-
tion.
a
Starter motor commutator undercut
wear limit a: 0.8 mm (0.03 in)
4. Check the armature
Replace the armature if out of specifica-
tion.
b
Armature continuity
Checking points
Commutator segments b
Segment – Armature core c
Segment – Armature shaft d
Checking the brush holder and
brush
1. Check the brush holder assembly for
continuity. Replace if out of specification.
8-11
Electrical system
S67C8021
for continuity.
d
c
S67C8022
Continuity
Yes
No
No
4
1
1
5
2
Brush holder assembly continuity
Checking points
Brush 1 – Brush 2
Brush 1 – Terminal 5
Brush 2 – Terminal 5
Brush 3 – Brush 4
Brush 3 – Terminal 5
Brush 4 – Terminal 5
2. Measure the length of each brush.
Replace if below specification.
Brush length wear limit a:
6.4 mm (0.25 in)

Assembling the starter motor

CAUTION:
Do not allow grease or oil to contact the
commutator of the armature.
2
5
3
3
4
S67C8023
Continuity
Yes
No
a
S67C8024
67C3K11