APRILIA Pegaso 650 Service And Repair Manual page 292

REPAIRS
8.1.4 ELECTRIC SYSTEM
DEFECT
Spark plug becomes
dirty immediately with
carbon deposits.
Spark plug gets dirty too
quickly.
Spark plug electrodes
overheated or burnt.
Alternator does not
charge.
The alternator does
charge but the current
intensity is lower than
the prescribed value.
Alternator charges too
much.
Charge not constant.
8.1.5 BATTERY
DEFECT
Battery runs down too
quickly.
Battery polarity inverted. 1) Battery has been incorrectly connected to the system.
Battery runs down too
quickly.
8 - 20
SYMPTOM AND POSSIBLE CAUSE
1) Carburation too rich.
2) Idling rpm too high.
3) Unsuitable fuel.
4) Dirty air cleaner.
5) Spark plug too cold.
1) Piston segments worn.
2) Piston or cylinder worn.
3) Carburation too rich.
1) Spark plug too hot.
2) Engine overheats.
3) Spark plug loose.
4) Carburation too poor.
1) Connection terminals interrupted, in short circuit or loose.
2) Alternator coils in short circuit, earthed or interrupted.
3) Regulator/rectifier in short circuit or defective.
1) The terminals are subject to short circuit, interruption or ex-
cessive separation.
2) Alternator stator coils earthed or interrupted.
3) Regulator/rectifier defective.
4) Battery faulty.
1) Short circuit inside battery.
2) Regulator/rectifier damaged or defective.
3) Unstable earth of regulator/rectifier.
1) Terminal insulation worn due to vibrations, with consequent
temporary short circuits.
2) Internal generator short circuits.
3) Regulator/rectifier defective.
SYMPTOM AND POSSIBLE CAUSE
1) Recharging system defective.
2) Battery elements have lost much active material conse-
quent on excessive charge.
3) Presence of short circuits inside battery owing to excessive
accumulation of sediments due to unsuitable electrolyte.
4) Old battery.
1) Dirt on top and sides of battery box.
2) Old battery.
REMEDY
Adjust carburettor.
Adjust carburettor.
Change carburettor.
Clean.
Replace with "hot" spark
plug.
Change.
Change.
Adjust.
Replace with "cold" spark
plug.
Adjust.
Tighten.
Adjust carburettor.
Repair, change or tighten.
Change.
Change.
Repair or tighten.
Change.
Change.
Change.
Repair or change.
Change.
Change.
Repair or change.
Change.
Change.
REMEDY
Check the alternator, the
regulator/rectifier, the cir-
cuit connections and carry
out operations necessary
t o r e s t o r e c o r r e c t r e -
charge.
Change the battery and
repair charging system.
Change the battery.
Change the battery.
Change the battery and
make sure new one is
connected properly.
Clean.
Change the battery.