Parts such as the Carburetor: Valve Set,throttl, Screw Set, Top.gasket, Screw-washer,4x14 are included in the Sfx50mm 1998 (w) Switzerland Carburetor parts fiche.
The Screw-wash.,4x8 is the cheapest item from this partsfiche.
The Carburetor is made up of components including this Carburetor Assy which is the most expensive.