Why Is My Lawn Mower Sputtering? Troubleshoot Tips.

A lawn mower can sputter due to various reasons, such as a dirty air filter, clogged fuel line, or spark plug issues. In order to troubleshoot the issue, it’s best to start with the simplest solution first – checking the spark plug.

Having a well-maintained lawn is an essential part of a beautiful home. However, it can be frustrating when your lawn mower starts sputtering and stalling in the middle of mowing. Luckily, this common problem can usually be resolved with a little bit of troubleshooting.

In this article, we will discuss the possible reasons for why your lawn mower may be sputtering, and how to fix the issue to ensure your lawn is perfectly manicured every time. Whether you’re a homeowner or a professional landscaper, these tips will help keep your lawn mower running smoothly.

Why Is My Lawn Mower Sputtering? Troubleshoot Tips.

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Causes Of Lawn Mower Sputtering

Lawn mower sputtering is a common issue that can be caused by a few factors. One of the main causes is a faulty spark plug or wires that need to be replaced. A dirty air filter can also cause sputtering and should be cleaned or replaced regularly.

Old or contaminated fuel can also contribute to the problem and should be drained and replaced with fresh fuel. Carburetor issues may also lead to sputtering, and it’s important to make sure it’s clean and working properly. Lastly, problems with the ignition system can cause sputtering and should be checked by a professional.

By troubleshooting these common issues, you can keep your lawn mower running smoothly and enjoy a perfectly cut lawn.

Prevention Of Lawn Mower Sputtering

Regular maintenance checks are essential to prevent lawn mower sputtering. It is important to clean the air filter, change the oil and check spark plugs regularly. Proper use and handling of the lawn mower is also important. Refueling the machine while it’s hot can cause sputtering.

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Mowing wet grass can clog the mower’s cutting deck and cause the engine to sputter. Avoid running over large sticks and debris in the yard to prevent damage and sputtering. With these tips, you can easily troubleshoot lawn mower sputtering issues and enjoy a well-kept lawn.


After doing some thorough investigation, we now have a clearer understanding of why lawn mowers might start sputtering. Simple issues like old gas or dirty air filters could easily be the culprit; however, if these common fixes don’t solve the problem, it may be time to take a closer look at your carburetor or fuel pump.

To prevent sputtering in the future, it’s always best to stay on top of maintenance by regularly cleaning filters and replacing gas. Don’t forget to check the spark plug as well, as a faulty spark plug can lead to all sorts of problems.

By maintaining your lawn mower regularly, you’ll keep your lawn looking great and your mower running efficiently. A properly maintained lawn mower means you’ll be able to spend more time doing the things you love and less time tinkering with your machine.