The Poulan 578982101 Carburetor W/Bulb helps maintain proper fuel and air delivery for reliable engine starting and operation on compatible Poulan outdoor power equipment. The carburetor regulates the air-fuel mixture supplied to the engine, while the primer bulb helps move fuel through the system during startup. This assembly is a practical replacement for a worn, clogged, or damaged... https://www.wholetoolbox.com/poulan-578982101-carburetor-w-bulb/578982101.html