myroad700 Workshop-manual : Page 15

          1. GENERAL INFORMATION                                                                    MYROAD 700i


 TROUBLESHOOTING

 ENGINE WILL NOT START OR IS HARD TO START


 Inspection/Adjustment                        Symptom                    Probable Cause

 Check if fuel reaches
 carburetor by loosening
 drain screw                                                             Empty fuel tank
                                                                         Clogged carburetor fuel inlet
                                                                         tube, vacuum tube or fuel tube
                                                                         Clogged auto fuel valve
                 Fuel reaches                 Fuel does not reach        Clogged float oil passage
                 carburetor/fuel injector     carburetor/fuel injector   Clogged fuel tank cap
                                                                         breather hole
                                                                         Clogged fuel strainer
 Remove spark plug and                                                   Clogged fuel filter
 install it into spark plug                                              Faulty fuel pump
 cap to test spark by
 connecting it to engine                                                 Faulty spark plug
 ground                                                                  Fouled spark plug
                                                                         Faulty ignition unit
                                Spark jumps          Weak or no spark    Faulty A.C. generator
                                                                         Broken or shorted ignition coil
                                                                         Broken or shorted exciter coil
                                                                         Faulty ignition switch

 Test cylinder                                                           Starter motor idles but
 compression                                                             crankshaft does not rotate
                                                                         Valve clearance too small
                                                                         Improper valve and seat contact
                                Normal                   Low or no       Worn cylinder and piston rings
                                compression              compression     Blown cylinder head gasket
                                                                         Flaws in cylinder head
                                                                         Seized valve
                                                                         Improper valve timing
 Start engine by
 follow-ing normal
 starting procedure
                                                                         Faulty auto bystarter
                              Engine does not         Engine fires but   Air leaking through intake
                              fire                    does not start     pipe
                                                                         Incorrect ignition timing
                                                                         Incorrectly adjusted pilot screw


 Remove spark plug and
 inspect again

                                                                         Flooded carburetor
                               Dry spark plug          Wet spark plug    Faulty auto bystarter
                                                                         Throttle valve excessively
                                                                         open




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