Leaf Blower: Won't start
The leaf blower engine needs gas, compression and spark to start. If your leaf flower is not starting, first, make sure there's fresh gas in the tank—old gas accumulates water and burns poorly. If the fuel is fresh and the leaf blower still doesn't start, disconnect the spark plug wire and then remove and examine the spark plug. If you see deposits or corrosion on the electrodes, replace the spark plug. Finally, to check for compression, remove the spark plug, cover the spark plug opening on the mower with your thumb and pull the starter cord. If you don’t feel air pushing from the cylinder, it’s likely that the piston rings need to be replaced (for an accurate compression reading, use a compression gauge).
These repairs may help solve your Leaf Blower problem:
Replace the leaf blower carburetor
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.
Rebuild the leaf blower carburetor
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.
Replace the leaf blower fuel line
A leaf blower's fuel line is a flexible tube that carries 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.
Replace the leaf blower fuel filter
The fuel filter is located at the end of the fuel line inside the gas tank. It filters dirt and other particles from the fuel as gasoline moves from the fuel tank to the carburetor. Replace the filter when it becomes dirty and clogged.
Do leaf blower preventive maintenance
Proper maintenance ensures that your leaf blower runs smoothly and works properly. Refer to your owner's manual for guidance in maintaining the leaf blower. Replace parts such as the air filter, fuel filter and spark plug.
Replace the leaf blower recoil starter
The leaf blower's recoil starter consists of a rope and spring-loaded pulley system. If the pull rope doesn't retract, it's likely that the spring inside the recoil starter is broken. The recoil starter can also fail to engage the engine when the rope is pulled. Replace the recoil starter if the spring breaks or if the recoil starter won’t engage the engine.