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HomeRepair HelpLawn Boy Mower RepairLawn Boy Lawn mower leaking gas Repair
Lawn Boy Lawn mower leaking gas
If your Lawn Boy lawn mower is leaking gas, start at the carburetor. The most common cause of a lawn mower gas leak 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, since a worn or damaged needle can fail to shut off fuel and let the carburetor overflow. A bad carburetor gasket is another likely cause of mower leaking fuel, followed by a cracked or brittle primer bulb that seeps gas when pressed. If those parts look good, inspect the fuel shut-off solenoid and fuel lines for leaks, then check whether the carburetor float is stuck open. In many cases, cleaning the carburetor can free a sticking float, but if that does not work, you may need a carburetor rebuild or full replacement. Whether you are dealing with a Lawn Boy lawn mower leaking gas, a carburetor leaking gas, or gas leaking from the bottom of the lawn mower, enter your model number on RepairClinic.com to find the exact replacement part that fits your mower.
01 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 - Lawn Boy 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 Lawn Boy lawn mower leaking gas from the bottom?
What causes a Lawn Boy carburetor to leak gas?
Can a cracked primer bulb cause a Lawn Boy mower gas leak?
How do I know if the fuel shut-off solenoid or fuel line is leaking on my Lawn Boy mower?
How do I find the right Lawn Boy gas leak part for my mower?
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