Yamaha 2004 Rhino 660 YXR660FAS Service Manual page 377

• Start the engine and accelerate to about
1,000 r/min.
Charging voltage
14 V at 1,000 r/min
NOTE:
Use a fully charged battery.
EB804012
4. Charging coil resistance
• Disconnect the A.C. magneto coupler from
the wire harness.
• Connect the pocket tester (Ω × 1) to the
charging coils.
Tester (+) lead → White terminal 1
Tester (–) lead → White terminal 2
Tester (+) lead → White terminal 1
Tester (–) lead → White terminal 3
• Measure the charging coil resistance.
Charging coil resistance
0.32 ~ 0.43 Ω at 20 °C (68 °F)
EB804015
5. Wiring connections
• Check the connections of the entire charg-
ing system.
Refer to "CIRCUIT DIAGRAM".
Replace the rectifier/regulator.
CHARGING SYSTEM
OUT OF
SPECIFICATION
MEETS
SPECIFICATION
CORRECT
9 - 25
MEETS SPECIFICATION
The charging circuit is not faulty.
OUT OF SPECIFICATION
Replace the pickup coil/stator assembly.
POOR CONNECTION
Properly connect the charging system.
– +
ELEC