Yamaha YQ50 Service Manual page 165

4.Charging coil resistance
• Disconnect the CDI magneto coupler from
the wire harness.
• Connect the pocket tester (Ω x 1) to the
charging coil.
• Check the charging coil resistance
Tester (+) lead © White Q
Tester (–) lead © Ground W
Charging coil resistance :
0.48 ~ 0.72
5.Connections
Check all connections in the charging system.
Refer to "WIRING DIAGRAM".
Replace the rectifier/regulator.
Ω ° °
at 20 C (68 F)
MEETS
SPECIFICATION
MEETS
SPECIFICATION
CHARGING SYSTEM
OUT OF SPECIFICATION
Charging coil defect © Replace.
POOR CONNECTIONS
Repair.
8-15
ELEC
CDI
MAGNETO
w
-
Y/R W/R B/R