Engine: 150-500cc, 4 stroke Application: Motorcycles Venturi diam.: 30 - 32 - 34 - 36mm Features: Valvola gas cilindrica Piston-type throttle valve Indipendent starting circuit 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 Mechanically-operated diaphragm acceleration pump Ø 44 and Ø 40 elastic fitting connection Air intake connection Ø 48 or Ø M48 x 1.25 for trumpet or joint assembly