HYOSUNG Prima Service Manual page 126

7-3 SERVICING INFORMATION
ELECTRICAL
Complaint
1. Defective CDI & Ignition coil unit.
No sparking or
2. Defective spark plug.
poor sparking.
3. Defective magneto stator coil.
4. Loose connection of lead wire.
1. Mixture too rich.
Spark plug soon
2. Idling speed set too high.
becomes fouled
3. Incorrect gasoline.
with carbon.
4. Dirty element in air cleaner.
5. Spark plug too cold.
6. Incorrect engine oil.
1. Spark plug too hot.
Spark plug
2. The engine overheats.
electrodes overheat
3. Spark plug loose.
or burn.
4. Mixture too lean.
5. Not enough engine oil.
1. Open or short in lead wires, or loose lead connections.
Magneto does not
2. Shorted, grounded or open magneto coil.
charge.
3. Shorted or open regulator/rectifier.
1. Lead wires tend to get shorted or open-circuited or
Magneto charge,
but charging rate is
2. Grounded or open-circuited stator coils of magneto.
below the specific-
3. Defective regulator/rectifier.
ations.
4. Defective cell plates in the batttery.
Magneto
1. Internal short-circuit in the battery.
overcharges
2. Resistor element in the regulator/rectifier damaged or defective.
3. Regulator.rectifier unit poorly grounded.
Ustable charging.
1. Lead wire insulation frayed due to vibration,
2. Magneto coil internally shorted.
3. Defective regulator/rectifier.
Starter button is
1. Battery run down.
not effective.
2. Defective switch contacts.
3. Brushes not seating properly on commutator in starter motor.
4. Defective starter relay.
5. Defective starter pinion gears.
6. Defective front or rear brake light switch circuit.
BATTERY
Complaint
Battery runs down
1. The charging method is not correct.
quickly.
2. Cell plates have lost much of their active material as a result
3. A short-circuit condition exists within the battery due to
4. Battery is too old.
Reversed battery
1. The battery has been connected the wrong way round in the
polarity.
Battery discharges
1. Dirty container top and sides.
too rapidly.
2. Battery is too old.
Symptom and possible causes
loosely connected at terminal.
resulting in intermittent shorting.
Symptom and possible causes
of over-charging.
excessive accumulation of sediments caused by the incorrect
electrolyte.
system, so that it is being charged in the reverse direction.
Remedy
Replace.
Replace.
Replace.
Connect/tighten.
Adjust carburetor.
Adjust carburetor.
Change.
Clean.
Replace by hot type plug.
Replace.
Replace by hot type plug.
Turn up.
Retighten.
Adjust carburetor.
Check oil pump.
Repair, replace or retighten.
Replace.
Replace.
Repair, or retighten.
Replace.
Replace.
Replace the battery.
Replace the battery.
Replace.
Clean and tighten groun connection.
Repair or replace.
Replace.
Replace.
Recharge or replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace or repair.
Remedy
Check the magneto and regulator/rec-
tifier circuit connections, and make
necessary adjustments to obtain spe-
cified charging operation.
Replace the battery, and correct
the charging system.
Replace the battery.
Replace the battery.
Replace the battery and be sure to
connect the battery properly.
Clean.
Replace.