stryker 125 Workshop-manual : Page 27

          2. GENERAL INFORMATION                                                            STRYKER 125/150

 ENGINE STOPS IMMEDIATELY AFTER IT STARTS

 Inspection/Adjustment                        Symptom                       Probable Cause

 Check if fuel reaches
 carburetor by loosening
 drain screw

                                 Fuel reaches       Fuel does not         Empty fuel tank
                                 carburetor         reach carburetor      Clogged float valve
                                                                          Clogged fuel filter


 Remove spark plug


                              Plug not fouled or    Plug fouled or        Fouled spark plug
                              discolored            discolored            Incorrect heat range plug
 Remove spark plug and
 install it into spark plug
 cap to test spark by
 making it contact the                                                    Fouled spark plug
 engine                                                                   Faulty CDI unit
                                                     Weak or inter-       Faulty A.C. generator
                                 Good spark          mittent spark        Faulty ignition coil
                                                                          Broken or shorted high tension
                                                                          wire
 Test cylinder                                                            Faulty ignition switch
 compression (using a
 compression gauge)
                                                                          Worn cylinder and piston rings
                                 Normal                 Abnormal          Blown cylinder head gasket
                                 compression            compression       Flaws in cylinder head
                                                                          Worn valve seat
                                                                          Seized piston
 Check carburetor for
 clogging


                                 Not Clogged             Clogged          Clogged carburetor jets


 Check ignition timing

                                                                          Faulty CDI unit or A.C.
                                Correct timing      Incorrect timing      generator
                                                                          A.C.G. flywheel not aligned

 Check carburetor pilot
 screw adjustment

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




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