The Briggs & Stratton 791230 Carburetor helps maintain smooth engine operation by mixing air and fuel in the proper proportions for combustion. It delivers the mixture to the engine to support starting and consistent performance in compatible equipment. Replacing a worn or faulty carburetor can help address starting difficulties, rough running, and fuel delivery issues. Check your eng... https://www.wholetoolbox.com/briggs-stratton-791230-carburetor/791230.html