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HomeRepair HelpHonda Mower RepairHonda Lawn mower leaking gas Repair
Honda Lawn mower leaking gas
If your Honda lawn mower is leaking gas, start at the carburetor. On these mowers, the most common cause is a dried out or missing carburetor bowl gasket, especially when gas is leaking from the bottom of the lawn mower or the bottom of the carburetor. Next, check the float needle, which should shut off fuel flow into the float bowl. If it is worn or damaged, fuel can keep flowing until the carburetor overflows. A bad carburetor gasket is another likely source of a lawn mower gas leak, followed by a cracked primer bulb that seeps fuel when you press it. If the leak is not coming directly from the carburetor body, inspect the fuel shut-off solenoid and connected fuel lines for cracks or loose fits. A stuck carburetor float can also cause a mower leaking fuel condition and may require a thorough carburetor cleaning, rebuild, or replacement. Enter your Honda model number on RepairClinic.com to find the exact carburetor bowl gasket, float needle, primer bulb, carburetor gasket, fuel shut-off solenoid, or other replacement part that fits your specific lawn mower.
01 - Honda Lawn Mower Carburetor Bowl Gasket
If the lawn mower leaks gas the carburetor bowl gasket on the bottom of the carburetor might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor bowl gasket.
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02 - Honda Lawn Mower Float Needle
The float needle might not be shutting off the fuel. The float needle opens and closes the float valve to allow fuel to enter the float bowl. If the float needle is damaged, the carburetor will continue to fill with fuel until it overflows. If the float needle is defective, replace it.
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03 - Honda Lawn Mower Carburetor Gasket
If fuel is leaking from the bottom of the carburetor, the carburetor gasket might be dried out or missing.
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04 - Honda Lawn Mower Primer Bulb
Over time, the rubber of the primer bulb can become brittle and cracked. If the primer bulb is leaking, replace it. Don't try to patch or repair it.
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05 - Honda Lawn Mower Fuel Shut-Off Solenoid
Check the fuel shut-off valve for leaks, and ensure that the fuel lines fit tightly on the valve. If the fuel shut-off solenoid is leaking, replace it. In addition, inspect the fuel shut off lines for cracks or tiny holes. If a fuel shut-off line is leaking, replace it.
Highly Likely
06 - Honda Lawn Mower Float
The float might be stuck open. If the float is stuck open, remove the carburetor assembly from the engine and clean it thoroughly. If the cleaning the carburetor is not effective, either rebuild or replace the carburetor.
Highly Likely
Frequently Asked Questions
Why is my Honda lawn mower leaking gas from the bottom of the carburetor?
Can a bad float needle cause a Honda mower leaking fuel problem?
What should I check first if my Honda lawn mower has a gas leak?
Should I repair or replace the carburetor if my Honda mower is leaking gas?
How do I find the right carburetor gasket, primer bulb, or float needle for my Honda lawn mower?
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