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Lawn Mower Leaks Gas

The lawn mower small engine often has a separate model number. Use the small engine model number for a complete list of symptoms and parts. Watch our model # lookup video for help finding the model number.

The 17 most common part(s) or condition(s) which cause the symptom Lawn mower leaks gas are listed below starting with the most likely. Check or test each item and watch any available videos.


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To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your 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.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Float Needle

If the carburetor assembly leaks gas the float needle inside the float bowl might not be sealing properly. If this happens, remove the carburetor assembly from the engine and either clean it thoroughly or replace it.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Carburetor Gasket

If the lawn mower leaks gas the carburetor 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 gasket.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Primer Bulb

If the lawn mower engine leaks gas check the 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.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Shut-Off Solenoid

If the lawn mower leaks gas, check the fuel shut off solenoid valve. Be certain the fuel lines fit tightly on the fuel shut off solenoid valve. Also, check for cracks or pinholes in the fuel shut off lines.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Float

If the carburetor assembly leaks gas the float mechanism inside the float bowl might be sticking open. If this happens remove the carburetor assembly from the engine and either clean it thoroughly or replace it.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Float Bowl

If the lawn mower leaks gas the carburetor float 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 float bowl gasket.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Carburetor Kit

If the engine carburetor leaks gas, rebuild the carburetor with this carburetor kit. Carburetor leaks can be caused by bad gaskets, an sticking float and other defects.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Float Bowl Gasket

If the lawn mower leaks gas the carburetor float 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 float bowl gasket.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Filter

If the lawn mower leaks gas, check the connections to the fuel filter and the filter housing itself. If it has a crack, replace it, don't try to repair it. If any of the fuel lines are dry or cracked replace them completely, don't try to cut off a piece and reattach it because the rest of the tubing might also have cracks or defects.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Line

If the lawn mower leaks gas, check the fuel lines. If any of them has a crack, replace it, don't try to repair it. If any of the fuel lines are dry or cracked replace them completely, don't try to cut off a piece and reattach it because the rest of the tubing might also have cracks or defects.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Bowl Nut

If the lawn mower leaks gas the bowl nut on the bottom of the carburetor might be loose, or the bowl nut gasket might be cracked or missing. If the leak is coming from the bottom of the carburetor, try tightening the bowl nut slightly.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Tank Kit

If the lawn mower leaks gas check the gas tank for cracks, pinholes, separated seams, or areas that might be worn out. If the tank is leaking do not try to patch it, replace the gas tank.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Pump Kit

If the lawn mower leaks gas, check the fuel pump kit. Be certain the fuel lines and vacuum line fit tightly on the fuel pump. Also, check for cracks or pinholes in the fuel pump body.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Pump

If the lawn mower engine leaks gas, check the fuel pump. Be certain the fuel lines and vacuum line fit tightly on the fuel pump. Also, check for cracks or pinholes in the fuel pump body.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Shut Off

If the lawn mower leaks gas, check the fuel shut off valve. Be certain the fuel lines fit tightly on the fuel shut off. Also, check for cracks or pinholes in the fuel shut off lines.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

Fuel Pump Body

If the lawn mower engine leaks gas, check the fuel pump body. Be certain the fuel lines and vacuum line fit tightly on the fuel pump. Also, check for cracks or pinholes in the fuel pump body.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

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