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HomeRepair HelpCraftsman RepairCraftsman Small engine leaks gas Repair
Craftsman Small engine leaks gas
If your Craftsman small engine is leaking gas, shut off the fuel supply and keep the engine away from sparks or open flames before inspecting it. The most likely cause is a dried-out or missing carburetor gasket, especially when gas is leaking from the bottom of the carburetor. Next, check the carburetor float bowl gasket and carburetor bowl gasket for damage or shrinkage. Seasonal equipment can also develop fuel leaks after stale or ethanol-blended fuel sits in the carburetor, so inspect the carburetor and replace damaged sealing parts as needed. If the leak is not at the carburetor, inspect the fuel tank for cracks, then check the fuel line for dry, brittle, or split sections. A cracked primer bulb is another common source of a small engine fuel leak and should be replaced rather than patched. These checks apply whether you are troubleshooting a lawn mower leaking gas, snowblower leaking gas, or another Craftsman small engine. Enter your model number to find the exact replacement carburetor gasket, float bowl gasket, fuel tank, fuel line, or primer bulb for your specific engine.
01 - Craftsman Carburetor Gasket
The carburetor gasket 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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02 - Craftsman Float Bowl Gasket
The carburetor float bowl gasket might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor float bowl gasket.
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03 - Craftsman Carburetor Bowl Gasket
The carburetor bowl gasket 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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04 - Craftsman Fuel Tank
The fuel tank might be cracked or have a small leak. Inspect the fuel tank for leaks. If there is a leak, replace the fuel tank—do not attempt to repair it.
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05 - Craftsman Fuel Line
One or more of the fuel lines may have a leak. Inspect the fuel lines for cracks. If any of the fuel lines are cracked or dry, replace them. Do not attempt to repair a fuel line—if a fuel line is cracked, you must replace it.
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06 - Craftsman Primer Bulb
The primer bulb may be leaking. Over time, the rubber of the primer bulb can become brittle and cracked, causing the bulb to leak gas. If the primer bulb is leaking, replace it. Do not attempt to patch or repair the primer bulb.
Highly Likely
07 - Craftsman Carburetor
Over time, the carburetor may develop cracks due to the vibration and heat of the engine. If the carburetor is cracked, it will leak fuel. Inspect the carburetor for cracks or corrosion. If the main body of the carburetor is leaking, you will most likely need to replace the carburetor.
Common
Frequently Asked Questions
Why is my Craftsman small engine leaking gas from the carburetor?
What should I check if my Craftsman small engine is leaking fuel from the tank, fuel line, or primer bulb?
Can old gas cause a Craftsman small engine to leak gas?
How do I find the correct replacement part for a Craftsman small engine fuel leak?
Is it safe to run a Craftsman small engine that is leaking gas?
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