grand dink 125 mmc 2 Manuale-dofficina : Pagina 151

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          13-1. FUEL SYSTEM/CARBURETOR/
   FUEL PUMP/ FUEL TANK                                                     GRAND DINK 125/150



 FUEL PUMP
 CONSTRUCTION:
 The fuel pump adopted for this model is a vacuum-type fuel pump which utilizes the positive and
 negative pulsating pressures produced by the engine crankcase to control the oil pump diaphragms
 and deliver fuel from the fuel tank to the carburetor through the suction valve and outlet valve.


 FUEL PUMP CONSTRUCTION




                                                          Outlet Valve
             Outlet




     Diaphragms




                   Suction Valve


                                     Pulsating Pressure
                                     from Crankcase
                                                          Inlet




                                                                                          13-4