Measuring The Brushes - Yamaha F40BMHD Manuel D'entretien

– +
ELEC
a
a
STARTER MOTOR
c
b
2. Check:
• Commutator undercut
Dirt/foreign matter → Clean.
(with compressed air)
3. Measure:
• Commutator undercut
Out of specification → Replace the
armature.
Commutator undercut limit
0.8 mm (0.03 in)
4. Check:
• Armature continuity
Out of specification → Replace.
Armature continuity
Commutator
a
segments
Segment -
Armature core
Segment -
Armature shaft

MEASURING THE BRUSHES

1. Measure:
• Brush length
Out of specification → Replace the
brush assembly.
Brush length limit
6.4 mm (0.25 in)
8-27
a
Continuity
No continuity
b
No continuity
c
a
E