2007-2009 Kawasaki KFX50 service manual, Page 41Get this manual
1GENERAL INFORMATION NO SPARK AT SPARK PLUG InspectionAdjustment Symptom Probable Cause
Replace with new spark plug and inspect again Weak or no spark Check spark plug cap and high-tension wire for looseness Not loose Check CDI unit coupler for looseness Not loose Measure resistance between terminals of CDI unit coupler Normal Check related parts Faulty ignition switch Weak battery Faulty pulser coil Faulty ignition coil Faulty charging system Broken wire harness Poorly connected coupler Check CDI unit with CDI unit tester Normal Check ignition coil with CDI unit tester Abnormal Faulty ignition coil Abnormal Faulty CDI unit Abnormal Loose Poorly connected coupler Loose Loose spark plug cap Good spark Faulty spark plug