mxu 50 Manuel atelier : Page 39

          1. GENERAL INFORMATION                                                  ATV 50


 CLUTCH, DRIVE AND DRIVEN PULLEYS

                  Symptom              Probable Cause


                                       Worn or slipping drive belt
                                       Broken ramp plate
          Engine starts but motor-     Broken driven face spring
          cycle does not move          Separated clutch lining
                                       Damaged driven pulley shaft splines
                                       Damaged final gear
                                       Seized final gear


           Motorcycle creeps or
           engine starts but soon      Broken shoe spring
           stops or seems to rush      Clutch outer and clutch weight stuck
           out (Rear wheel rotates     Seized pivot
           when engine idles)


                                       Worn or slipping drive belt
           Engine lacks power at       Worn weight rollers
           start of a grade (poor      Seized drive pulley bearings
           slope performance)          Weak driven face spring
                                       Worn or seized driven pulley bearings


           Engine lacks power at       Worn or slipping drive belt
           high speed                  Worn weight rollers
                                       Worn or seized driven pulley bearings

                                       Oil or grease fouled drive belt
           There is abnormal noise     Worn drive belt
           or smell while running      Weak driven face spring
                                       Worn or seized driven pulley bearings

 STEERING HANDLEBAR DOES NOT TRACK STRAIGHT

                  Symptom              Probable Cause

                                     (Front and rear tire pressures are normal)

           Steering is heavy           Steering stem nut too tight
                                       Broken steering steel balls


           Front or rear wheel is      Excessive wheel bearing play
           wobbling                    Bent rim
                                       Loose axle nut

          Steering handlebar pulls     Misaligned front and rear wheels
          to one side                  Bent front fork


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