kpw 125 Manuale-dofficina : Pagina 19

          1. GENERAL INFORMATION                                                                     K-PIPE 125


 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
 making it contact the
 engine
                                                                          Faulty or fouled spark plug
                                                     Weak or inter-       Faulty CDI unit
                                 Good spark          mittent spark        Faulty A.C. generator
                                                                          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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