Yamaha MX775 - CHECKING THE STATOR COIL ASSEMBLY

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ELECTRICAL
ELECTRICAL COMPONENTS
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a. Remove the spark plug cap from the high tension
cord.
b. Connect the digital circuit tester () to the spark
plug cap as shown.
c. Measure the spark plug cap resistance.
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CHECKING THE STATOR COIL ASSEMBLY
1. Disconnect:
• Stator coil connector
(from the wire harness)
2. Check:
• Stator coil resistance
Out of specification  Replace the stator coil
assembly.
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a. Connect the digital circuit tester to the stator coil
connector as shown.
b. Measure the stator coil resistance.
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Model 88 Multimeter with tachometer:
YU-A1927
• Positive tester probe 
Spark plug side “1”
• Negative tester probe 
High tension cord side “2”
Stator coil resistance:
18 A: 0.16–0.24  at 23 C (73.4 F)
20 A: 0.112–0.168  at 23 C (73.4 F)
25 A: 0.096–0.144  at 23 C (73.4 F)
Model 88 Multimeter with tachometer:
YU-A1927
• Positive tester probe 
White
• Negative tester probe 
White