Yamaha F80B Service Manual page 183

Commutator diameter wear limit:
21.0 mm (0.83 in)
3. Measure the commutator undercut a.
Replace the armature if below specifica-
tion.
Commutator undercut wear limit a:
1.0 mm (0.04 in)
4. Check the armature
Replace if out of specifications.
Armature continuity
Commutator segments b
Segment – Armature core c No continuity
Segment – Armature shaft d No continuity
6D93G11
for continuity.
Continuity
Power trim and tilt motor
5. Check the circuit breaker for continuity.
Replace if there is no continuity.
6. Measure the brush length. Replace if
below specification.
Brush length wear limit e:
3.5 mm (0.14 in)
7. Check the base for cracks or damage.
Replace if necessary.
8. Check the bushing 1 and oil seal for
damage or wear. Replace if necessary.
1
2
3
4
5
6
7
8
9
7-28