Yamaha WR250FM Bicycle User Manual


 
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ELEC
IGNITION SYSTEM
AC MAGNETO INSPECTION
1. Inspect:
Pickup coil resistance
Out of specification Replace.
Tester (+) lead
Red lead
1
Tester () lead
White lead
2
Pickup coil
resistance
Tester selector
position
248 ~ 372
at
20 °C (68 °F)
×
100
RW
1
2
NEUTRAL SWITCH INSPECTION
1. Inspect:
Neutral switch conduct
No continuity while in neutral Replace.
Continuity while in gear Replace.
Tester (+) lead
Sky blue lead
1
Tester () lead
Ground
2
Sb
1
Ground
2
Tester selector
position
NEUTRAL
×
1
IN GEAR
+
Ω×1
1
2
L/WSb
EC628000
CDI UNIT INSPECTION
Check all electrical components. If no fault is
found, replace the CDI unit. Then check the
electrical components again.