grand dink 125 mmc 1 Manuel atelier : Page 150

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



 OPERATION OF CARBURETOR JETS
 1.LOW SPEED
                     Venturi (slightly opened throttle valve)
     Air                                                          Air Bleed Holes      Mixture.......
                     Low Speed Air Inlet
     Fuel in Float Chamber Slow Jet
    -------------------- Low Speed Small Jet Holes
 2.MIDDLE SPEED
                     Venturi (halfway opened throttle valve)       Air Bleed Holes      Mixture.......
     Air
                     High Speed Air Jet
     Fuel in Float Chamber Main Jet
         Main Jet (The slow jet also works.)

 Low & Middle Speed Supplementary Device:




                                         Vacuum Tube            Low Speed Air Jet


                             ACV
                                                                                  Vacuum Diaphragm

                                                            Throttle
                                                            Valve


                                                                                                   Air




       Pilot Screw


                                                                       Main Jet
                                   Bypass Jet    Slow Jet
    Low & Middle Speed Supplementary Fuel Inlets


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