Gas Chainsaw: Leaking gas
Move the chainsaw to a well-ventilated area and check the fuel lines for cracks. Replace the fuel lines if they're leaking.
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 the tank if it's damaged.
Replace the chainsaw fuel lines
Fuel lines become brittle over time and can crack or tear. 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.
Replace the chainsaw carburetor
The 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.
Rebuild the chainsaw carburetor
Rebuild kits are available for most carburetors. The kit contains essential components for rebuilding a 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.
If your chainsaw isn't running well, a dirty carburetor could be the problem. You can take it apart, clean it and rebuild it, using a carburetor rebuild kit. This repair guide takes you through the process.
15 minutes or less
If the engine won't start even though there's fuel in the chainsaw, the carburetor could be the problem. Sometimes, it's easier to replace the carburetor than to clean it and rebuild it. Follow these steps to do the job yourself in about half an hour.
15 minutes or less
June 1, 2016
By Sears PartsDirect staff
Learn the basics of taking care of your chainsaw and solving common problems.