c. Connection between C.D.I and the high-tension coil.
Engine not running smoothly:
1. Defective ignition first circuit:
a. Bad contact in circuitry or cable.
b. Defective of flywheel magneto.
2. Bad ignition secondary circuit.
a. The ignition coil insulation defect causing electric leakage.
b. Defective magneto coil.
I. Short circuit between coil layers.
II. Defective coil.
c. Defective spark plug.
I. Spark plug covered by carbon.
II. Electric leakage in ceramic part of spark plug.
d. d. Electric leakage from spark plug rubber screen.
3. Defective ignition timing.
a. Defective flywheel magneto.
b. Defective C.D.I .
c. Too large gap of spark plug.
d. Too high electric resistance of spark plug.
6.1.1 Starter System
Starter motor not operating.
1. Damaged battery.
2. Battery circuit broken, bad contact or too large resistance at connections.
3. Fuse blown.
4. Defective ignition switch.
5. Defective front and/or rear brake switches.
6. Defective starter motor switch.
7. Defective starter motor relay.
8. Defective starter motor.
9. Electric cables defective or broken.
10. Starter motor drive pinion locked with the over speed clutch gear.
Starter motor power insufficient:
1. Insufficient battery charge.
2. Bad contact on starter electric cables.
3. Binding in the starter motor pinion.
4. Armature shaft bent.
5. Commutator unclean or worn.
6. Motor brush worn or spring too weak.
7. Starter motor or relay defective.
6.2 Battery
Inspection:
Use specific gravity gauge to measure the electrolyte.
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