KTM Supermoto 640LC4 Owner's Manual page 36

TROUBLE
High oil consumption
All switched on lamps blown
out
Headlight and parking light
fail
Flasher lights, brake light,
fan and horn fail
The NEUTRAL lamp is not
on even though the gear is
in NEUTRAL
The battery is discharged
CAUSE
Buckling gear ventilation hose
Engine oil level too high
Engine oil too thin (viscosity)
Voltage regulator faulty
Blown fuse
Blown fuse
Defect indicator lamp.
Defect neutral switch.
Loose connections, defect cable.
The ignition (power consumer)
hasn't been switched off
The battery isn't charged by the
generator because
REMEDY
Readjust or replace ventilation hose
Check engine oil level when the engine is warm; correct if
necessary
Use thicker engine oil; see chapter „Engine oil"
Remove seat and check connections. Have voltage regulator
checked
Replace fuse (below the headlight mask).
Replace fuse (below the headlight mask).
Replace indicator lamp
Connect cable to ground; neutral switch must be replaced if
indicator lamp lights up.
Check connections and cables.
Recharge the battery according to the relevant instructions.
Remove seat and check voltage regulator connections; voltage
regulator and generator should be checked by a KTM dealer.
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