TROUBLE SHOOTING FOR PEAK VOLTAGETRBLANLS9-4ETROUBLE SHOOTING FOR PEAK VOLTAGEItems Symptoms1. Poor starting • No firing. The starter motor cranks the engine, but no firing takesplace in the cylinder.• Firing takes place in the cylinder, but the engine stops soon.• Start-up time is too long. The engine will not start up easily.2. Unstable idlespeed• The engine speed is not stable at idle.• The engine stalls when the throttle lever is opened.• The engine stalls after it is warmed up.3. Unstable enginespeed• The engine does not run smoothly.• The engine speed drops during acceleration.Check the ignition system.1) Check the lead to ignition coil, CDI unit, pulser coil and charge coil.NGOKContamination, Loose connectionCorrosionCleanCorrect2) Check the spark gap.NGOKAbove specification Replace the spark plug.3) Check the plug cap (resistance).NGOKOut of specification Replace.4) Check the ignition coils (resistance).NGOKOut of specification Replace.5) Check the CDI unit resistance and output peak voltage.OKNGAbove specification Replace the ignition coil.6) Check the charge coil resistance and output peak voltage.NGOKBelow specification Replace the charge coil.7) Check the pulser coil resistance and output peak voltage.NGOKBelow specification Replace the pulser coil.Replace the CDI unit.
