Yamaha YZ250(W)/W1 Owner's Service Manual page 520

IGNITION SYSTEM
3. Inspect:
9 Source coil 2 resistance
Out of specification ¡ Replace.
Tester (+) lead ¡Green/ Blue lead 1
Tester (–) lead ¡Green/ White lead 2
Source coil 2
resistance
44~66Ω at
20°C (68°F)
NEUTRAL SWITCH INSPECTION
1. Inspect:
9 Neutral switch conduct
Tester (+) lead ¡ Sky blue lead 1
Tester (–) lead ¡ Ground 2
NEUTRAL
IN GEAR
No continuous while in neutral¡Replace.
Continuous while in gear¡Replace.
EC628000
CDI UNIT INSPECTION
Check all electrical components. If no fault is
found, replace the CDI unit. Then check the
electrical components again.
6-6
ELEC
Tester selector
position
Ω × 10
Sb Ground Tester selec-
1 2
tor position
Ω × 1