Riding Mower and Tractor: Leaking oil or gas

Check the oil level when the engine leaks oil. Drain oil to the full mark on the dipstick if you find the engine overfilled. A leaking head gasket or sump gasket can also cause oil leaks. Replace any damaged engine gaskets. If you notice gasoline stains on the pavement or garage floor, investigate the source of the leaking fuel. Rebuild or replace the carburetor if it leaks gas. Check the fuel pump for leaks and replace the pump if it’s damaged.

These repairs may help solve your Riding Mower and Tractor problem:

Replace the riding mower carburetor assembly

Carburetor

If the engine on your riding mower or lawn tractor is running roughly or only runs when the choke is partly on, you might need to replace the carburetor. The carburetor mixes gas with air before the fuel goes into the cylinder. If the gas/air mix isn't balanced, the engine won't have peak performance.

For manuals, repair guides, and specific part recommendations, enter your model number.

Rebuild the riding mower engine carburetor

Carburetor rebuild kit

The carburetor mixes fuel with air to create a combustible mixture that enters the engine cylinder and ignites to drive the piston. Impurities in gasoline can clog the carburetor. Seals and gaskets in the carburetor eventually wear out. Use a carburetor rebuild kit to refurbish a clogged or leaking carburetor.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the riding mower head gasket

Head gasket

Replacing the head gasket, which requires a torque wrench, involves removing the cylinder head and cleaning the mating surfaces. A symptom of a defective head gasket is low compression.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the riding mower fuel pump

Fuel pump

The fuel pump moves fuel to the engine from the fuel tank on the riding mower or lawn tractor fuel tank. If the engine won't start or quits after starting, the fuel pump might not be working.

For manuals, repair guides, and specific part recommendations, enter your model number.