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4-5 SERVlClNG INFORMATION
ELECTRICAL
Complaint
No sparking
or
poor sparking.
Spark plugs
soon
become fouled
with
carbn.
Spark
plugs
become fouled
too soon.
Spark plug el-
trodes overheat
or burn.
Generator
does
not charge.
Generator charge,
but
charging rate
is below the
specification.
Generator
overcharges.
Unstable
charging.
Starter button
is not effective.
Symptom
and possible
causes
1. Defective ignition coil.
2. Defective spark plugs.
3. Defective signal generator or igniter unit.
1. Mixture too rich.
2. Idling speed set t o o high.
3. Incorrect gasoline.
4. Dirty element in air cleaner.
5. Spark plugs t o o cold.
1. Worn
piston rings.
2. Pistons or cylinders worn.
3. Excessive clearance of valve stems in valve guides.
4. Worn stem oil seal.
-
1. Spark plugs too hot.
2. The engine overheats.
3. Defective signal generator or igniter unit.
4. Spark
plugs
loose.
5. Mixture
too lean.
1. Open or short in lead wires, or loose lead
connections.
2. Shorted, grounded or open generator coils.
3. Shorted or panctured regulator/rectifier.
-
1. Lead wires tend t o
get
shorted or open-circuited
or loosely connected at terminals.
2. Grounded or open-circuited stator coils of
generator.
3. Defective regulatorlrectif ier.
4. N o t enough electrolyte i n the battery.
5. Defective cell plates i n
the
battery.
1. Internal short-circuit in the battery.
2. Resistor element in the regulatorlrectifier
damaged
or defective.
3.
Regulator/rectif ier poorly grounded.
1.
Lead wire insulation frayed due to vibration,
Remedy
Replace.
Replace.
Replace.
Adjust carburetors.
Adjust carburetors.
Change.
Clean.
Replace by hot type plugs.
Replace.
Replace.
Replace.
Replace.
Replace by cold type plugs.
Tune up.
Adjust.
RMighten.
Adjust carburetors.
Repair or replace or
retighten.
Replace.
Replace.
Repair, or retighten.
Replace.
Replace.
Add distilled water
between
the level lines.
Replace the battery.
Replace the battery.
Replace.
Clean
and tighten ground
connection.
:
Repair or replace.
resulting in intermittent shorting.
2. Generator internally shorted.
Replace.
3. Defective regutatorlrectif ier.
1. Battery run down.
2. Defective switch contacts.
3. Brushes not seating properly
on
commutator in
starter motor.
4. Defective starter
relay.
Replace.
Recharge
or
replace.
Replace.
I
Repair or replace.
Replace.
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