1985-1986 Honda Fourtrax 125 TRX125 Shop Manual, Page 216Get this manual
BATTERYCHARGING SYSTEM
TROUBLESHOOTING
No powerkey urned on :
1Dead battery
Low fluid levelLow specific grav ityCharging system failure
Intermittent powe r: 1l oose battery connection 2Loose charging system connection 3Loose starting system connection
Cha rging system failure1Loose, broken, or shorted wire or connection Faulty voltage regulator 3Faulty alternator
2Disconnected battery cable