Note: We assume the engine and emission control system is operating properly before troubleshooting the carburetor.

Make sure these things are done properly:

• carburetor to manifold nuts should be tight
• intake manifold to cylinder head mounting nuts should be tight
• air horn to main body mounting screws should be tight. Loose screws may permit air leaks
• fuel lines free of clogs, crimps, or fittings loose or damaged
• fuel strainger free of clogs
• carburetor float level properly adjusted
• idle speed and mixture adjusted properly