85
Problem: Spark plug electrodes overheat or burn
Condition
Remedy
1.
Spark plug
incorrect (too hot)
2.
Engine
overheats
3.
Spark plug
loose
4.
Mixture
too lean
1. Replace plug
2. Service cooling system
3. Tighten plug
4. Adjust carburetor
Problem: Magneto does not charge
Condition
Remedy
1.
Lead wires/connections
shorted - loose - open
2.
Magneto coils
shorted - grounded - open
3.
Regulator/rectifier
defective
1. Repair - replace - tighten lead wires
2. Replace magneto coils
3. Replace regulator/rectifier
Problem: Magneto charges, but charging rate is below the specification
Condition
Remedy
1.
Lead wires
shorted - open - loose (at terminals)
2.
Stator coils (magneto)
grounded - open
3.
Regulator/rectifier
defective
4.
Electrolyte
low
5.
Cell plates (battery)
defective
1. Repair - tighten lead wires
2. Replace stator coils
3. Replace regulator/rectifier
4. Add distilled water
5. Replace battery
Problem: Magneto overcharges
Condition
Remedy
1.
Internal battery
short circuited
2.
Regulator/rectifier resistor
damaged - defective
3.
Regulator/rectifier
poorly grounded
1. Replace battery
2. Replace resistor
3. Clean - tighten ground connection
Problem: Charging unstable
Condition
Remedy
1.
Lead wire
intermittently shorting
2.
Magneto
internally shorted
3.
Regulator/rectifier
defective
1. Replace lead wire
2. Replace magneto
3. Replace regulator/rectifier
Problem: Starter button not effective
Condition
Remedy
1.
Battery charge
low
2.
Switch contacts
defective
3.
Starter motor brushes
not seating
4.
Starter relay
defective
5.
Emergency stop - ignition switch
off
6.
Wiring connections
loose - disconnected
1. Charge - replace battery
2. Replace switch
3. Replace starter motor
4. Replace relay
5. Turn on switches
6. Connect - tighten - repair connections
Problem: Battery “sulfation” (Acidic white powdery substance or spots on surfaces of cell plates)
Condition
Remedy
1.
Charging rate
too low - too high
2.
Battery electrolyte
insufficient
3.
Specific gravity
too low
4.
Battery
run-down - damaged
5.
Electrolyte
contaminated
1. Replace battery
2. Keep electrolyte to prescribed level
3. Charge battery - add distilled water
4. Replace battery
5. Replace battery
Problem: Battery discharges too rapidly
Condition
Remedy
1.
Electrolyte
contaminated
2.
Specific gravity
too low
3.
Charging system
not charging
4.
Cell plates
overcharged - damaged
5.
Battery
short-circuited
6.
Specific gravity
too low
1. Replace battery
2. Charge battery - add distilled water
3. Check magneto - regulator/rectifier - circuit connections
4. Replace battery - correct charging system
5. Replace battery
6. Charge battery
Problem: Battery polarity reversed
Condition
Remedy
1.
Battery
incorrectly connected
1. Reverse connections - replace battery - repair damage
Manual
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