agility city 125 Workshop-manual : Page 24

          1. GENERAL INFORMATION                                                     AGILITY CITY 125


 POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)



 Inspection/Adjustment                          Symptom                      Probable Cause

 Check ignition timing



                                                                           Faulty CDI unit
                               Correct timing        Incorrect timing
                                                                           Faulty pulser coil

 Check carburetor pilot
 screw adjustment

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

 Check carburetor gasket
 for air leaks
                                                                           Deteriorated O-ring
                                                                           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
                                                                           Faulty CDI unit
                                                      Weak or inter-       Faulty A.C. generator
                                 Good spark           mittent spark        Faulty ignition coil
                                                                           Broken or shorted spark plug
                                                                           wire
                                                                           Faulty ignition switch
 Check air cut-off valve


                                                                           Faulty air cut-off valve
                                    Good                   Faulty          Damaged vacuum tube
                                                                           Clogged or damaged air vent
                                                                           hole




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