The most expensive part in this assembly is the Carburetor (38).
The most reasonably priced component used on the Cr250m Elsinore 1976 Usa Carburetor Components is the Screw,cross 3x6.
Some items from this specific schematic: Jet, Slow (#45), Jet,main,#162, Bulk Tube,f 35x3m, Screw Set.