A Honda Lawn Mower With a Gas Leak in the Front

Gas that leaks from a mower is a fire hazard.

Gas that leaks from a mower is a fire hazard.

If you see fluid leaking from the front of your Honda lawn mower, stop the machine immediately and don't use it again until you've properly diagnosed and repaired the problem. One simple way to know if the liquid is gasoline is to smell it, but not too closely. If you have gas leaking from your mower, the problem may originate at one of several points.

Gas Cap Malfunctions

When you notice your Honda mower leaking gasoline, the first and simplest thing to check is the gas cap. The gas cap isn't located on the front of the machine, but the vibration of the mower during operation may slosh fuel from the tank so it runs down the front of the machine, particularly when the fuel tank is full. Check the rubber ring on the inside of the cap to make sure it isn't missing or wearing out, and check that the cap fits securely on the tank.

Gas Tank Perforations

A more serious problem that can result in a gas leak is a perforation in the front or bottom of the Honda mower's gas tank. A sharp object like a rock or piece of metal can cause a hole if it gets caught in the blades and flung against the fuel tank. The gas tank of an older mower that's been stored improperly and exposed to the elements may rust through. Turn the mower on its side and examine the fuel tank to check for holes or perforations.

Carburetor Dysfunction

The carburetor can be a source of a gasoline leak at the front of a lawn mower. Over time, the carburetor's gaskets may dry out, harden and crack, leaving vulnerable space where gasoline can leak from the unit. The float mechanism in the carburetor may be another source of a leak. If the float becomes stuck in the open position, gas will leak from the opening, particularly during operation, resulting in dripping or flowing gas that attracts your attention.

Primer Bulb and Fuel Line Deterioration

When you push the primer bulb on a Honda mower, it forces air from the gas lines and carburetor, and replaces the space with the fuel and oil mixture that powers the machine. A dry, cracked or perforated primer bulb can easily leak fuel that runs down the machine and drips from the front. The lines that connect the primer bulb to the fuel tank and to the carburetor may also be the problem. Examine the bulb and the lines to ensure that they're in good shape, and replace them if necessary.

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