Yamaha YZ125 2019 Owner's Service Manual page 219

3. Inspect:
• Charging coil 2 resistance
Out of specification → Replace.
Tester (+) lead → Green/Blue lead "1"
Tester (-) lead → Black lead "2"
Charging coil 2
resistance
44.0–66.0 Ω at
20 °C (68 °F)
CHECKING THE CDI UNIT
Check all electrical components. If no fault is
found, replace the CDI unit. Then check the
electrical components again.
Tester selector
position
Ω × 10
6-6
IGNITION SYSTEM