VENTO MOTORCYCLES
Rev no.01/ page 85of 84
Complaint
Symptom and possible causes Remedy
Unstable
charging.
1. Defective regulator/rectifier.
2. Lead wire insulation frayed due to
vibration, resulting in intermittent
shorting.
3. Magneto coil internally shorted.
Replace.
Replace.
Replace.
Starter button
is not
effective.
1. Run down Battery.
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 lights
switch circuit.
Repair or replace.
Replace.
Repair or replace.
Replace.
Replace.
Repair or replace.
BATTERY
Complaint
Symptom and possible causes
Remedy
Battery runs
down quickly.
1. The charging system is not correct.
2. Cell plates have lost much of their
active material as a result of over-
charging.
3. A short-circuit condition exists within the
battery due to excessive accumulation
of sediments caused by the incorrect
electrolyte.
4. Battery is too old.
Check the magneto and regulator/rectifier
circuit connections, and make necessary
adjustments to obtain specified charging
operation.
Replace the battery, and correct the charging
system.
Replace the battery.
Replace the battery.
Reversed
battery polarity.
1. The battery has been connected the
wrong way round in the system, so that it
is being charged in the reverse direction.
Replace the battery and be sure to connect the
battery properly.
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