Why is my mower sputtering How can I fix it

A sputtering mower can be frustrating, but it's usually not a difficult problem to fix. Here are some of the most common causes and solutions:

Dirty carburetor: This is one of the most common causes of sputtering. The carburetor mixes air and fuel, and if it's dirty, it won't be able to do its job properly. Clean the carburetor with carburetor cleaner and a brush.
Clogged fuel filter: The fuel filter prevents dirt and debris from getting into the carburetor. If it's clogged, it can restrict the flow of fuel to the carburetor. Replace the fuel filter.
Bad spark plug: The spark plug ignites the air/fuel mixture in the combustion chamber. If it's bad, it won't be able to create a spark and the engine won't run. Replace the spark plug.
Loose spark plug wire: The spark plug wire connects the spark plug to the ignition coil. If it's loose, it can prevent the spark plug from getting the electrical current it needs to create a spark. Tighten the spark plug wire.
Dirty air filter: The air filter prevents dirt and debris from getting into the engine. If it's dirty, it can restrict the flow of air to the engine and cause it to sputter. Clean or replace the air filter.

Can I use a lawn mower with a sputtering engine? No, it's not safe to use a lawn mower with a sputtering engine. The engine could overheat and cause a fire.
How often should I clean my carburetor? You should clean your carburetor every 50 to 100 hours of use.
How do I know if my fuel filter is clogged? If your mower is sputtering and the carburetor is clean, the fuel filter may be clogged.
How do I test the spark plug? Remove the spark plug and connect it to the spark plug wire. Hold the spark plug against the engine block and pull the starter cord. You should see a spark between the spark plug and the engine block.
How do I tighten the spark plug wire? Use a spark plug wrench to tighten the spark plug wire.

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Why is My Mower Sputtering and How Can I Fix It?