Yamaha MX775 - CHECKING THE BRUSH; CHECKING THE STARTER RELAY

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ELECTRICAL
ELECTRIC STARTING SYSTEM
CHECKING THE BRUSH
1. Measure:
• Brush length (of each brush) “1”
Out of specification  Replace.
2. Check:
• Brush spring “2”
Fatigue/damage  Replace.
CHECKING THE STARTER RELAY
1. Measure:
• Magnetic switch coil resistance
Connect the digital circuit tester () to the magnetic
switch.
Out of specification  Replace.
ASSEMBLING THE STARTER MOTOR
1. Install:
• Starter drive lever “1”
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Brush wear limit length:
6.0 mm (0.2362 in)
Model 88 Multimeter with tachometer:
YU-A1927
A
B
C
Holding coil resistance A–B:
0.88–1.32 
Pull-in coil resistance A–C:
0.4–0.6 
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