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ELEC
Electrical system
Checking the armature (starter
motor)
1. Check the commutator. Clean using 600-
grit sandpaper and compressed air if
dirty.
2. Measure the commutator diameter a.
Replace the armature if below specifica-
tion.
3. Measure the commutator undercut b.
4. Check the armature for continuity.
Replace if out of specification.
Checking the brush holder and
brush
1. Check the brush holder assembly for
continuity. Replace if out of specification.
2. Measure the length of each brush.
Replace the brush assembly if below
specification.
Commutator standard diameter a:
29.0 mm (1.14 in)
Wear limit: 28.0 mm (1.10 in)
Commutator standard undercut b:
0.5–0.8 mm (0.02–0.03 in)
Wear limit: 0.2 mm (0.01 in)
a
b
Armature continuity:
c d ef
C
CC
CC
CC
C
Brush holder assembly continuity:
a b cde
C
CC
CC
CC
C
C
CC
CC
CC
C
C
CC
CC
CC
C
C
CC
CC
CC
C
c
d
e
f
c
b
d
a
a
b
c
d
e
e
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