Yamaha YZ125(P)/LC Owner's Service Manual page 498

IGNITION SYSTEM
EC626002
IGNITION COIL INSPECTION
1. Inspect:
9
Primary coil resistance
Out of specification ¡ Replace.
Tester (+) lead ¡ Orange lead 1
Tester (–) lead ¡ Black lead 2
Primary coil
resistance
0.14~0.20Ω at
20°C (68°F)
2. Inspect:
9
Secondary coil resistance
Out of specification ¡ Replace.
Tester (+) lead ¡ Spark plug lead 1
Tester (–) lead ¡ Orange lead 2
Secondary coil
resistance
6.7~10.1kΩ at
20°C (68°F)
NOTE:
When inspecting the secondary coil resistance,
remove the spark plug cap.
6-4
ELEC
Tester selector
position
Ω × 1
Tester selector
position
kΩ × 1