Yamaha F200B Service Manual page 521

Bearing splitter 7:
(commercially available)
TIP:
Before removing the bearing, measure and
write down the bearing depth a.
5. Remove the bearing 8.
9
8
7
Bearing splitter 7:
(commercially available)
Bolt 9 (commercially available):
M8 × 15 mm
TIP:
Before removing the bearing, measure and
write down the bearing depth b.
Checking the armature (PTT 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.
9
8
7 7
8
b
a
Motor commutator standard diameter a:
23.0 mm (0.91 in)
Wear limit: 22.0 mm (0.87 in)
3. Check the armature
Replace if out of specifications.
b
c
Digital circuit tester: 90890-03174
Armature continuity:
b c
Checking the brush
1. Measure the length of each brush.
Replace the brushes if below specifica-
tion.
a
b
Motor brush standard length a:
11.5 mm (0.45 in)
Wear limit b: 4.5 mm (0.18 in)
PTT motor
for continuity.
d e
d e
9-46
9