Dellorto PHVA 17.5 ED as a replacement part for a defective carburettor. The PHVA 17.5 shares the carb set up with the other listed vehicles. No tuning required if the vehicle is in original condition. Simply replace and ride. Fits the original air box and intake manifold. Choke: manual lever choke the carburettor vacuum port oil terminal connection engine: 24mm connection Air filter side: 35mm main jet: M6 # 083 Pilot jet: M4 # 034 choke jet: M5 # 050 floats: 13700.1 carburettor slide: 40 (plastic version) needle choice: A7