Trimmer Flywheel Assembly 576423301

This authentic part is supplied by the original equipment manufacturer for use with Poulan and Husqvarna handheld lawn and garden equipment. The flywheel has magnets on its side that create an electric charge as the magnets pass the ignition module. The electric charge is sent to the spark plug to fire the air-fuel mix in the cylinder. The flywheel fits on the crankshaft by a key that aligns with a keyway on the crankshaft, this allows for proper firing timing. If the key on the flywheel is broken it can cause misfires or will not start at all. Please make sure to refer to the appropriate diagrams of your model for the correct location and application of this component. Keep in mind this high-quality flywheel assembly is made of durable metal and is sold individually.