Parts such as the Carburetor: Nut, Wire Adjusting, Jet, Main (no.140), Throttle Screw Set, Jet, Main #150 are included in the Rd250 1974 Rd0 Europe 24rd0-300e1 Carburetor parts fiche.
This schematic depicts all components used in the Rd250 1974 Rd0 Europe 24rd0-300e1 Carburetor partslist.
With a quantity of eight pieces, the 98517-04016-00 is the most used part in the CARBURETOR diagram.