![Yamaha YZ250(W)/W1 Owner'S Service Manual Download Page 516](http://html1.mh-extra.com/html/yamaha/yz250-w-w1/yz250-w-w1_owners-service-manual_4770909516.webp)
6-4
IGNITION SYSTEM
ELEC
EC626003
IGNITION COIL INSPECTION
1. Inspect:
9
Primary coil resistance
Out of specification
→
Replace.
2. Inspect:
9
Secondary coil resistance
Out of specification
→
Replace.
NOTE:
9
Remove the spark plug cap by turning it coun-
terclockwise and inspect.
9
Install the spark plug cap by turning it clock-
wise until it is tight.
Tester (+) lead
→
Yellow lead
1
Tester (–) lead
→
Black lead
2
Tester (+) lead
→
Spark plug lead
1
Tester (–) lead
→
Yellow lead
2
Primary coil
Tester selector
resistance
position
0.20~0.30
Ω
at
Ω ×
1
20°C (68°F)
Secondary coil
Tester selector
resistance
position
9.5~14.3k
Ω
at
k
Ω ×
1
20°C (68°F)
1P8-9-32-6 4/6/06 3:00 PM Page 10
Summary of Contents for YZ250(W)/W1
Page 78: ...2 11 MAINTENANCE SPECIFICATIONS SPEC MEMO...
Page 594: ...TUN MEMO...