Vento Phantom R4i Service Maintenance Manual page 85

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