The carburetor float can be made of which two materials?

The carburetor float is an essential component that helps regulate the fuel level in the carburetor bowl. It operates on the principle of buoyancy, where the float rises and falls with the fuel level, controlling the opening and closing of the fuel inlet valve.

Plastic and brass are commonly used materials for the float because of their favorable properties. Plastic is lightweight, resistant to corrosion, and can be molded into the desired shape easily, making it a popular choice in many modern small engines. Brass, on the other hand, is durable and has a good resistance to wear and corrosion, providing longevity in the float's operation.

Other materials, such as wood or metal, do not typically offer the same benefits in this application. Wood can absorb fuel and swell, while certain metals may corrode over time, compromising the float's performance. Ceramic or glass, although potentially viable, are less practical because they are more fragile and not conducive to the repetitive motion and impact experienced in the engine environment. Thus, plastic and brass are the most suitable materials for carburetor floats in small engines.