15. ELECTRICAL EQUIPMENT SUPER 9 50 IGNITION SYSTEM No spark at plug Engine starts but turns poorly · Faulty spark plug · Ignition primary circuit · Poorly connected, broken or shorted wire --Faulty ignition coil --Between A.C. generator and CDI unit --Poorly connected wire or connector --Between CDI unit and ignition coil · Ignition secondary circuit --Between CDI unit and ignition switch --Faulty ignition coil --Between ignition coil and spark plug --Faulty spark plug · Faulty ignition switch --Poorly insulated plug cap · Faulty ignition coil · Improper ignition timing · Faulty CDI unit --Battery voltage too low (6V max.) · Faulty A.C. generator --Faulty CDI unit STARTING SYSTEM Starter motor won`t turn Lack of power · Fuse burned out · Weak battery · Weak battery · Loose wire or connection · Faulty ignition switch · Foreign matter stuck in starter motor · Faulty starter switch or pinion · Faulty front or rear stop switch Starter motor rotates but engine does · Faulty starter relay not start · Poorly connected, broken or shorted wire · Faulty starter pinion · Faulty starter motor · Starter motor rotates reversely · Faulty starter clutch · Weak battery 15-2