Yamaha FX Nytro FX10X, Service Manual

Page: 692 / 859

8-18
– +
ELEC
CHARGING SYSTEM
TROUBLESHOOTING
1. Connect:
• Pocket tester
(to the battery terminals)
2. Measure:
• Battery voltage
OK
BATTERY IS NOT CHARGED.
Battery voltage:
More than 12 V at 20 °C (68 °F)
OUT OF SPECIFICATION
• Check the battery.
• Replace or charge the battery.
Refer to “BATTERY INSPECTION” in CHAP-
TER 2.
3. Start the engine and accelerate to 5,000 r/min.
NOTE:
Place the snowmobile onto a suitable stand to raise
the track off of the ground.
4. Measure:
• Charging voltage
CAUTION:
Never disconnect the battery leads while the
generator is operating; otherwise, the rectifier/
regulator will be damaged.
OK
Charging voltage:
14 V/5,000 r/min
OUT OF SPECIFICATION
• Check the main fuse.
Refer to “FUSE INSPECTION” in CHAPTER 2.
• Check the stator coil.
OK FAULTY
Replace the main fuse and/or the sta-
tor coil.
Replace the rectifier/regulator.
OK
Check the charging system wiring.
Refer to “CIRCUIT DIAGRAM”.
Correct the connector.
FAULTY
Properly connect or repair the charging system
wiring.