Main Technical Features  Choke: Ø 15 - 16 - 17 - 17,5 - 18 - 19 - 19,5 - 20 - 21
  2-4 stroke Piston-type throttle valve
  Independent starting circuit Idling system with jet and mixture adjusting screw
  Main circuit with mechanical mixture adjustment by means of a conical needle
  connection by an insulated sleeve from Ø 26 to Ø 24-23 for PHBG A-C types
  and Ø 25 elastic fitting connection for PHBG B and D types Air inlet connection
  Ø 32 and Ø M32 x 1.25 for bellmouth or union assembly