kxr maxxer 250 300 Werkstatthandbuch : Seite 227

          17. IGNITION SYSTEM                                                                     ATV 300/250

 SPECIFICATIONS
                                 Item                                        Standard
 Spark plug                                  Standard type             DPR7EA-9
                                                                       0.60.7 mm
 Spark plug gap
                                                                       (0.0240.028 in)
                                 "F" mark
 Ignition timing                                                       51BTDC/2000RPM
                                 Full advance
                                  Primary coil                         3.44.1 
 Ignition coil resistance (20) Secondary without plug cap              14.45 K
                                  coil         with plug cap           19.8 K
 Pulser coil resistance (20)                                           105110 
 Ignition coil primary side max. voltage                               14 V
 Pulser coil max. voltage                                              1.6 V
 Exciter coil max. voltage                                             14 V


 TESTING INSTRUMENT
 Commercially available electric tester with resistance over 10 M/CDV.




 TROUBLESHOOTING
 High voltage too low                                  No high voltage
 · Weak battery or low engine speed                    · Faulty ignition switch
 · Loose ignition system connection                    · Faulty ignition unit
 · Faulty ignition unit                                · Poorly connected or broken ignition unit
                                                          ground wire
 · Faulty ignition coil                                ·Dead battery or faulty regulator/rectifier
 · Faulty pulser coil                                  · Faulty ignition coil connector
 Normal high voltage but no spark at plug              · Faulty pulser coil
 · Faulty spark plug
 · Electric leakage in ignition secondary circuit
 · Faulty ignition coil
 Good spark at plug but engine won`t start
 · Faulty ignition unit or incorrect ignition timing
 · Faulty change gear control unit
 · Improperly tightened A.C. generator flywheel




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