For Murray riding mowers, it's time to replace the fuel filter during any seasonal tune-up or if the fuel flow has been compromised, with symptoms including a sputtering engine or one that balks as it is throttled up. These fuel filters look similar to a barrel-shaped spinning top, and can be found by tracing the fuel line from the fuel tank to the carburetor. Since all Murray engines are made by Briggs and Stratton, fuel filters are easy to find and are available at any hardware and most department stores.
Locate the fuel filter, which will be attached to the fuel line. Follow the fuel line beginning from the bottom of the gas tank, and roughly halfway between the tank and the carburetor; there, the fuel filter will be found. Using either a hand clamp or a locking pliers, clamp off the line leading to the filter from the fuel tank.
Unscrew the hose clamps holding the filter on with your flat blade screwdriver. Remove the hose from the filter on the clamped side first by pulling it off the fuel filter nipple. It may need to be twisted and wiggled a bit before it comes loose, then catch any leaking gasoline in your small container.
Remove the unscrewed fuel line from the opposite end of the fuel filter by also pulling it off the nipple of the fuel filter. Again, twist and wiggle the hose while pulling, then once pulled off, allow all the excess gasoline to drain into your container.
Push your new filter ends into the fuel hoses. Position the hose clamps to tighten around the protruding ends of the fuel filter, making for a positive and leak-proof seal, then screw them securely down in a clockwise direction.
Squeeze the hand clamp or release the lever on the locking pliers from the fuel feed line to allow the gasoline to flow into the fuel filter and then into the carburetor. Check the hose clamped connections and tighten them down if any leakage occurs. Leaking of any sort is not acceptable, and if a leaking connection continues even after the clamps have been tightened securely, the clamps, hoses or both must be replaced before the engine can be run.