kpw 50 Workshop-manual : Page 19

          1. GENERAL INFORMATION                                                                         K-PIPE 50



 POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)



  Inspection/Adjustment                        Symptom                       Probable Cause


  Check ignition timing



                                                                          Faulty CDI unit
                                   Correct                Incorrect
                                                                          Faulty pulser coil

  Check carburetor air
   screw adjustment

                                                                          Mixture too lean (turn screw in)
                              Correctly adjusted   Incorrectly adjusted   Mixture too rich (turn screw
                                                                          out)

 Check carburetor gasket
      for air leaks
                                                                          Faulty intake manifold gasket
                                                                          Carburetor not securely
                                 No air leak              Air leaks       tightened
                                                                          Damaged insulator rubber
                                                                          Broken vacuum tube
 Remove spark plug and
 install it into spark plug
    cap to test spark by
  connecting it to engine
           ground
                                                                          Faulty or fouled spark plug
                                                         Weak or inter-   Faulty CDI unit
                                 Good spark                               Faulty A.C. generator
                                                         mittent spark    Faulty ignition coil
                                                                          Faulty ignition switch

  Check A.C. generator


                                                                          Faulty A.C. generator
                                    Good                   Faulty         Damaged vacuum tube
                                                                          Clogged air vent hole




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