BRIGGS & STRATTON 841545 Engine Carburetor Float

The Briggs & Stratton 841545 Carburetor Float regulates the fuel level within the cylinder head bowl of small-displacement engines. Situated inside the internal reservoir, this lightweight part rises and falls alongside the liquid fuel level, manipulating an attached needle valve to open or close the inlet orifice. This mechanism maintains an exact volume of gasoline required for proper air-fuel mixture generation, preventing engine flooding or lean running conditions. By ensuring a consistent fuel supply during operation, the part stabilizes combustion and supports consistent engine performance under varying loads.