The Homelite 309375010 Trimmer Carburetor helps restore reliable fuel delivery and dependable engine performance for compatible Homelite trimmers. It works by mixing the proper ratio of air and fuel before delivering it to the engine, supporting smooth starting, steady idling, responsive throttle control, and efficient combustion. Made to replace a clogged, worn, or damaged carburetor... https://www.wholetoolbox.com/homelite-309375010-trimmer-carburetor/309375010.html