The most expensive part in this assembly is the Carburetor Assy 1.
Parts such as the Carburetor: Starter Set, Cover, Carburetor 1, Cable Adjust Screw Set, Nozzle, Main are included in the Cg50w 1989 Jog Usa Carburetor parts fiche.
On this parts fiche the Screw, Panhead (796) is the most specified component.