ELEC
6. Measure:
• brush spring force
Out of specification
-->
Replace the brush
springs as a set.
STARTER MOTOR
a. Measure the resistances with the pocket tester.
b. If any resistance is out of specification, replace
the starter motor.
5. Measure:
• brush length
a
.
Out of specification
-->
Replace the brushes
as a set.
Pocket tester
90890-03174
Armature coil
Commutator resistance
0.0012 ~ 0.0022
Ω
Ω
Ω
Ω
Ω
at 20 °C (68°C)
Insulation resistance
above 1M
Ω
Ω
Ω
Ω
Ω
at 20 °C (68°F)
TTTTTTTTTTTTTTTTTTTTTTTTTTTT
T
T
TTTTTT
T
T
T
T
T TT
T TT
T TT
T TT
T TT
T TT
T TT
T TT
T TT
T
T
T
T TT
T TT
T
T
T
T
Wear limit
4.0 mm (0.16 in)
Brush spring force
7.65~10.01 N (780~1021 gf, 28~36 oz)
7. Check:
• inducted shaft grooves
Damage/wear
-->
Replace the starter motor
8. Check:
• bearing
• oil seal
Damage/Wear
-->
Replace defective parts.
a
7-21
Summary of Contents for YBR250 2007
Page 1: ...YBR250 SERVICE MANUAL 5D1 F8197 E0 2007 ...
Page 2: ......
Page 359: ...YAMAHA MOTOR DA AMAZÔNIA LTDA ...
