The Briggs & Stratton 84002146 Engine Regulator helps maintain consistent engine speed by controlling fuel or airflow according to operating demand. This replacement regulator works with the engine control system to help keep rotational speed within the required range as load conditions change. Proper regulation supports steady performance, smooth operation, and consistent power deliv... https://www.wholetoolbox.com/briggs-stratton-84002146-engine-regulator/84002146.html