Yamaha YZ250 Owner's Service Manual page 514

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)
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