Yamaha YZ250F(S) Owner's Service Manual page 596

2
2
1
1
1
W Br P
R G B
2
1
1
W Br P
R G B
2
2
6 - 6
IGNITION SYSTEM
2. Inspect:
Charging coil 1 resistance
G
Out of specification → Replace.
Tester (+) lead → Brown lead 1
Tester (–) lead → Green lead 2
Charging coil 1
resistance
720 ~ 1,080 Ω
at 20 ˚C (68 ˚F)
3. Inspect:
Charging coil 2 resistance
G
Out of specification → Replace.
Tester (+) lead → Pink lead 1
Tester (–) lead → Black lead 2
Charging coil 2
resistance
44 ~ 66 Ω at
20 ˚C (68 ˚F)
NEUTRAL SWITCH INSPECTION
1. Inspect:
Neutral switch conduct
G
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.
–
ELEC
Tester selector
position
Ω × 100
Tester selector
position
Ω × 10
Tester selec-
Sb
Ground
2 tor position
1
Ω × 1
+