Move the leaf blower to a well-ventilated area and check the fuel lines for cracks if your leaf blower leaks gas. Replace the fuel lines if they're cracked and leaking fuel.
If fuel leaks from the carburetor, rebuild or replace the carburetor to prevent gas from leaking. Replace the fuel tank cap if its seal is damaged and leaking. Check the fuel tank and replace if it's damaged.
These repairs may help solve your gas leaf blower problem
Replace the leaf blower fuel lines
A leaf blower's fuel lines carry fuel from the tank to the carburetor and from the primer bulb to the fuel system. Fuel lines become brittle over time and can crack or break. Replace a fuel line that's brittle or damaged. Be careful to install new fuel lines on the engine the same way the original fuel lines were configured.
The leaf blower's carburetor mixes air and gasoline in the proper proportions to create a combustible gas. If the engine starts and then sputters, or doesn't start at all due to lack of fuel, you might need to replace carburetor. It's often more cost effective and practical to replace the carburetor rather than rebuild it.
Is your leaf blower not starting even though there's gas in the tank? It could be a problem with the carburetor. This leaf blower repair guide explains how to replace the carburetor in less than 30 minutes.
The leaf blower carburetor mixes air and gasoline in the proper proportions to create a combustible gas. If the engine starts and then sputters, or doesn't start at all due to lack of fuel, you can rebuild the carburetor. Rebuild kits are available for most carburetors and contain essential components for rebuilding a leaf blower carburetor, such as diaphragms, seals and gaskets. You can sometimes fix a fuel supply problem by dismantling and cleaning a carburetor. Use the kit to rebuild the carburetor after cleaning it.