mxu 50 Manuel atelier : Page 242

          16. IGNITION SYSTEM                                                                       ATV 50

 SPECIFICATIONS
                                  Item                                        Standard
                                              Standard type             BR8HAS
 Spark plug                                     Hot type
                                                Cold type
 Spark plug gap                                                         0.60.7 mm (0.024
                                 "F" mark Full MXU 50/MX'ER 50          22BTDC/2000100rpm
 Ignition timing
                                 advance         MXU 50 REVERSE         13.5BTDC/1500100rpm
                                  Primary coil                          0.20.3
 Ignition coil resistance (20°C) Secondary with plug cap                8.09.3K
                                  coil         without plug cap         3.04.2K




 TROUBLESHOOTING
 High voltage too low                               No high voltage
 · Weak battery or low engine speed                 · Faulty ignition switch
 · Loose ignition system connection                 · Faulty CDI unit
 · Faulty CDI unit                                  · Poorly connected or broken CDI 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 CDI or incorrect ignition timing
 · Faulty change gear control unit
 · Improperly tightened A.C. generator flywheel




                                                                                        16-4