kpw 50 Workshop-manual : Page 21

          1. GENERAL INFORMATION                                                                    K-PIPE 50



 POOR PERFORMANCE (AT HIGH SPEED)



 Inspection/Adjustment                    Symptom                      Probable Cause

 Check ignition timing



                                                                     Faulty CDI unit
                              Correct                Incorrect
                                                                     Faulty pulser coil

 Check valve clearance


                                                                     Improperly adjusted valve clearance
                              Correct                Incorrect
                                                                     Worn valve seat

  Check fuel filter for
 fuel supply

                                                                     Empty fuel tank
                          Fuel flows freely   Fuel flow restricted   Clogged fuel filter or tube
                                                                     Clogged fuel tank cap breather
                                                                     hole
  Check carburetor for                                               Cracked fuel pump vacuum tube
     clogged jets


                            Not clogged              Clogged         Clean and unclog


  Check valve timing


                               Correct               Incorrect       Cam timing gear aligning marks
                                                                     not aligned

   Check valve spring
        tension


                           Not weakened             Weak spring      Faulty spring




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