Fuel tanks are designed to keep your engine's fuel clean, vented and secure on all lawn mowers, snow blowers and outdoor power products. If you spot debris in the gas tank or leaking gasoline, it's time for fuel tank maintenance. Never attempt to repair a damaged tank. It poses a risk of leakage, fire or fuel contamination. If you're replacing a fuel tank, use only parts recommended by the engine manufacturer. These parts will attach securely to your engine in the space provided.
Many fuel tanks are designed to use a vented gas cap to prevent a vacuum or pressure from forming in the fuel system. If fuel is leaking from the cap, a properly fitted replacement cap can solve the problem.
The main purposes of a fuel tank are to securely store and deliver enough fuel to get a job done and to make sure that the fuel stays clean. Because of very small passages in the carburetor, it is very important that the fuel be very clean.
Fuel tanks must be constructed of a non corrosive material or coated with a corrosion-resistant layer to protect against the damaging effects of water, alcohol and salt. If the tank is corroded or damaged, it should be replaced.
Some engines, like those used on walk behind mowers, use a fuel filter located inside the tank at the fuel outlet. These cannot be replaced - consult your local Briggs dealers on how to service in-tank filters. A filter can also be located outside the tank, midway along the fuel line.