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Small Engine Leaks Gas

The 7 most common part(s) or condition(s) which cause the symptom Small engine 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Carburetor Gasket

If the small engine 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.

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

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

Float Bowl Gasket

If the small engine 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Carburetor Bowl Gasket

If the small engine 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Gas Tank

If the small engine leaks gas check the gas tank for any cracks or pin hole leaks. If the gas tank can't be accessed, remove it from the engine and check it for leaks on a work surface. If the tank leaks, do not attempt a repair, 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Fuel Line

If the small engine 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Primer Bulb

If the small 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 small engine, you need to enter your model number on the right. The system will then display parts that are associated with your small engine.

Carburetor

If the lawn mower does not start, the carburetor might be clogged or have bad fuel in the float bowl. If old fuel was left in the lawn mower for a long time some of the volatile ingredients may have evaporated, leaving a thicker, stickier product that is more like varnish or shellac. This sticky fuel can clog up the small jets and ports in the carburetor and it can be difficult to burn making it hard to start the engine. The only solution is to drain the old fuel from the float bowl and thoroughly clean the carburetor with carburetor cleaner. If that isn't effective, the entire carburetor may need to be replaced.

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

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