Dell Orto CD carburetor PHVA 17,5 for Gummiansaugstutzen This carburetor is used on all scooters whose assumption have a 20 mm connector, in which the gasifier is inserted. The factory prepared alluded to with an E-choke, but also the use of a manually operated Chokezuges is possible. A conversion kit for this is included. nozzle equipment: As supplied: HD 65 M6 thread Addition: HD 72 M6 thread. This Vergaserset replaces the Dellorto reference numbers: DH1012 Piaggio 50cc all and DH3067 all Minarellimotoren with manual starter and DH1389 all Minarellimotoren with electric starter. The adjusting screws are located on the right side of the carburetor. Please notice!