Briggs and Stratton lawn mower running rough. If your Briggs and Stratton lawn mower is not running smoothly, there are a few simple checks that you can do before deciding it needs service from a lawn mower repair shop.
First of all, check to make sure there is gas in the tank and that the gas cap is on securely. Next, inspect the spark plug wire to make sure it’s connected properly.
Check your air filter (typically located under the hood) for dirt or wear and replace if necessary according to manufacturer specifications. Finally, run through this checklist of common problems:
Briggs and Stratton lawnmower running rough
In this article, we will give you some great tips on how to troubleshoot your lawnmower when it’s running rough.
In our opinion, the most common cause for a lawnmower to be running rough is its plug or air filter.
So, at the end of our guide, we’ll teach you what to do if your lawnmower is running rough and you think it might be an issue with either of these two components on your Briggs & Stratton engine.
Clogged Carburetor
It is possible that the carburetor is clogged. In most cases, a clogged carburetor is caused by leaving fuel in the lawnmower for a long time.
Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance that can build up in the carburetor, eventually resulting in harder starts as well as rough running.
If you suspect your carburetor is clogged, first try cleaning it with a cleaner designed to remove all residue and get rid of any clogs. If this doesn’t resolve the issue take it to an authorized dealer for diagnosis and repairs
Replace the Fuel Filter
The fuel filter might be clogged because the fuel may have evaporated from the lawnmower over time. The fuel in old tanks can thicken and clog up a filter, causing engine malfunction and shorter run times.
If you’ve noticed that your lawnmower is running poorly or hesitating a lot, you’ll want to see if there’s any old fluid in the tank or if the oil foam.
Clogging protection systems will break up these lumps and keep your mower running smoothly while fending off any unnecessary expense on replacement filters.
Faulty Spark Plug
Inspect the plug for cracks in the porcelain insulator, or debris that might be caught between any of its parts.
If there are any problems with the plugs, replace them with a brand new one to avoid damaging the engine further.
To determine if this is the case, use a spark tester. Your engine should have a strong spark when testing between the terminals attached to it.
If there’s no spark, this could indicate that there’s a problem with the plug you’re using and it should be changed straight away.
A Dirty Air Filter
When there’s a ton of debris on your lawnmower’s air filter, you have to make sure it gets cleaned up quickly.
If your lawnmower seems to be running much slower than normal and harder for you to control, chances are there’s a lot of debris on the air filter.
We highly recommend checking over it and having it substituted for one that is functional. This will likely make all the difference in making sure that your engine runs smoothly and allows you to cut grass with ease!
Gasoline problems
A small engine creates a problem when you run it with 10% ethanol-based gasoline. It doesn’t react well to it and will cause the engine itself to literally start burning up and create problems for the person who’s mowing their lawn.
In order to prevent this from happening, always try to use gas that is 100% ethanol-free because that kind of gasoline will never have an adverse effect on even an extremely delicate machine like some lawn equipment.
Even something as small as a premium fuel stabilizer can help extend fuel economy and make sure there aren’t any problems while using your lawnmower.
Additionally, you need to realize that the opposite of running your own gasoline through your lawnmower is using nothing but regular gasoline in the first place.
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