Gilera Runner RST 50 SP, Service Station Manual, Page: 54 / 183

1 . The lighting system bulbs burn out.
2 . The lighting system bulbs stop working.
3 . The battery overcharges (the main fuse blows).
4 . Non-recharging of the battery.
5 . Non functioning of the turn indicators.
Interventions
BREAKDOWN 1
Replace the regulator due to inefficiency.
BREAKDOWN 2
Check the efficiency of the lamps.
With the vehicle in gear, check the presence of
voltage to the battery on the yellow-black cable of
the light deviator. If there is voltage present, check
the correct voltage distribution of the stator: with-
out disconnecting the connector of the regulator
and with the vehicle in gear, use an alternating
voltage tester to check that the voltage distributed
at the connection between the grey cable and the
black cable is included in the values indicated. If
there are abnormalities, replace the stator.
If the checks made do not show abnormalities, re-
place the regulator.
If replacing the regulator still does not restore prop-
er functioning, make the controls on the connec-
tions of the electrics.
Specific tooling
020331Y Digital multimeter
Characteristic
Voltage distributed at 3000 rpms
25 to 30V
FAULT 3
After checking that there are no short circuits in the system towards the earth, replace the regulator
because it is certainly inefficient and replace it with a protective fuse.
Following the replacement, measure the current and the recharging voltage on the battery end.
Electrical system
Runner RST 50 SP
ELE SYS - 54