11-7
11
Electrical
Problem: Spark absent or weak
Condition Remedy
1. Ignition coil defective 1. Replace ignition coil
2. Spark plug defective 2. Replace plug
3. Magneto defective 3. Replace magneto
4. CDI unit defective 4. Replace CDI unit
5. Pick-up coil defective 5. Replace pick-up coil
Problem: Spark plug fouled with carbon
Condition Remedy
1. Mixture too rich 1. Adjust carburetor
2. Idling RPM too high 2. Adjust carburetor
3. Gasoline incorrect 3. Change to correct gasoline
4. Air cleaner element dirty 4. Clean element
5. Spark plug incorrect (too cold) 5. Replace plug
6. Valve seals cracked - missing 6. Replace seals
7. Oil rings worn - broken 7. Replace rings
Problem: Spark plug electrodes overheat or burn
Condition Remedy
1. Spark plug incorrect (too hot) 1. Replace plug
2. Engine overheats 2. Service cooling system
3. Spark plug loose 3. Tighten plug
4. Mixture too lean 4. Adjust carburetor
Problem: Battery does not charge
Condition Remedy
1. Lead wires/connections shorted - loose - open 1. Repair - replace - tighten lead wires
2. Magneto coils shorted - grounded - open 2. Replace magneto coils
3. Regulator/rectifier shorted - punctured 3. Replace regulator/rectifier
Problem: Battery charges, but charging rate is below the specification
Condition Remedy
1. Lead wires shorted - open - loose (at terminals) 1. Repair - tighten lead wires
2. Stator coils (magneto) grounded - open 2. Replace stator coils
3. Regulator/rectifier defective 3. Replace regulator/rectifier
4. Electrolyte low 4. Add distilled water
5. Cell plates (battery) defective 5. Replace battery
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