Is your Toro small engine leaking gas? Shut off the fuel supply and inspect the carburetor first. A dried-out or missing carburetor gasket is the most likely cause, especially when gas is coming from the bottom of the carburetor. The carburetor float bowl gasket or carburetor bowl gasket may also be worn, allowing gas to leak around the bowl. Stale or ethanol-blended fuel left in the carburetor is one of the most common root causes on seasonal equipment because it can damage gaskets and other fuel-system parts. If the carburetor is dry, inspect the fuel tank for cracks, then check the fuel line for splits, brittleness, or loose connections. A cracked fuel tank or fuel line must be replaced, not patched. Finally, examine the primer bulb for brittle rubber or cracks that cause a small engine leaking gas condition. These problems can appear as gas leaking from the carburetor, an engine fuel leak, or gas pooling beneath the engine. Enter your Toro model number to find the exact replacement carburetor gasket, float bowl gasket, fuel tank, fuel line, or primer bulb for your specific engine.
01 - Toro 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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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.
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.
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.
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.
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.