Checking The Armature (Starter Motor); Checking The Brush Holder And Brush - Yamaha F200B Service Manual

ELEC
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.
a
Commutator standard diameter a:
29.0 mm (1.14 in)
Wear limit: 28.0 mm (1.10 in)
3. Measure the commutator undercut b.
Commutator standard undercut b:
0.5–0.8 mm (0.02–0.03 in)
Wear limit: 0.2 mm (0.01 in)
4. Check the armature
Replace if out of specification.
5-71
Electrical system
b
for continuity.
c
d
Armature continuity:
c d
Checking the brush holder and
brush
1. Check the brush holder assembly for
continuity. Replace if out of specification.
a
c
c
d
Brush holder assembly continuity:
a b
2. Measure the length of each brush.
Replace the brush assembly if below
specification.
f
e
e f
e
b
d
a
e
b
c d e