Engine: 300-750cc, 4 stroke Application: Motorcycles Venturi diam.: 38 - 40 - 41mm Features: Piston-type throttle valve Indipendent starting circuit or with a flooding switch Idle system with jet and mixture adjusting screw Main circuit with mechanical mixture adjustment by a conical needle Versions with idle adjusting screws on the left and/or on the right Versions with mechanically-operated diaphragm acceleration pump Bowl with the possibility to assemble independent floats Sleeve connection with insulating reducing socket from Ø 48 to Ø 45 and Ø 46 elastic fitting connection Air intake connection Ø 52 and Ø 83 or Ø M52 x 1.25 for trumpet or joint assembly