How to clean a riding lawn mower carburetor Briggs and Stratton

How to clean a riding lawn mower carburetor Briggs and Stratton

Are you facing a problem while operating a riding lawn mower and tensed about the issue? Well, one of the reasons for creating such a problem might be your dirty carburetor. The lawnmower carburetors guarantee that the appropriate fuel and air combination will enter the engine cylinder to allow combustion.

When ignited by the fuel, spark plug, and air blend will combust, compelling the engine piston downward, which rotates the crankshaft causing the lawnmower blade to spin and, if appropriate, the lawnmower wheels or riding mower wheels to turn.

Old or lousy fuel can leave a gummy residue inside the carburetor. This residue can make a clog, preventing the appropriate ratio of fuel and air from entering the engine cylinder. At the point when this occurs, we frequently refer to the carburetor as being “dirty.”

6 Symptoms of Dirty Carburetor

Carburetor issues can arise from numerous points of view. A portion of the indications of carburetor issues include:

  • The idling of the engine is excessively low 
  • The engine starts and suddenly dies
  • Unusually high idling of the engine
  • Lawnmower produces exhaust that shows up as dark smoke
  • Engine sputters
  • The engine will not start quickly.

While a portion of these issues might be identified with stale fuel, an awful spark plug, or oil decayed, a dirty carburetor is frequently the guilty party. If you keep your mower’s carburetor clean, you can prevent a great deal of these issues.

When should you inspect and clean a lawn mower carburetor?

While the specific suggestion for this differs from one household to another, most experts say you should check and clean a lawnmower carburetor several times each year. The justification for this is straightforward: as you utilize your lawnmower, the grass, twigs, and debris, the blade kicks up advance into the little engine. A portion of that debris ends up within the carburetor – clogging fuel and air sections and diminishing the performance of the mower’s engine.

To clean your riding lawn mower carburetor briggs and stratton, you need to follow some simple and relatively easy steps. Let’s have a look at them-

Carburetor airflow ought to be checked out

First and foremost, eliminate the air filter cover and afterward continue to destroy the air filter itself. Search for whatever might be clogging your filter like oil, twigs, grass, earth, and grime, or debris. You likewise need to control the connection between the air filter and the carburetor to learn if there are noticeable blockages or development of the earth. If you notice unfamiliar articles or substances, eliminate them.

Replace or clean the air filter

After thoroughly inspecting the air filter, you can either replace it with a shiny new one or clean the filter with a vacuum. Metal parts inside the carburetor ought to be sprayed with a carburetor cleaner bought explicitly for this reason. These carburetor cleaners are accessible in spray cans that make cleaning advantageous. Both the throttle and the choke plate should move openly. They likewise ought to be sprayed with cleaner. There ought not to be any sticking going on.

Eliminating the fuel line

You will think that it is associated with your fuel tank. Take the fuel line and search for a deterrent or blockage present. You can softly blow into the tube to help free it of blockages. Next, take care to not incidentally swallow any fuel and abstain from inhaling any fuel fumes during work if you observe that the fuel moves openly, your due line is doubtlessly liberated from a blockage. When it is essential to utilize power when blowing, at that point, you most likely have an obstruction in your fuel line. If blowing doesn’t free or eliminate the blockage, you should substitute the fuel line.

Continue to check out the spark plug

It would be best to eliminate the plug to check whether there is any dampness or scorching noticeable. You may discover dampness close to the spark plug if the air-fuel combination contains a lot of fuel. Charring, then again, may show that the air-fuel combination has an abundance amount of air.

Change the combination of air and fuel

If the plug is warranted, you can change the combination of air and fuel by adjusting the idle screw. You should reassemble the parts you have taken out. Set up the fuel line, the spark plug, and in the long run, the air filter if it doesn’t obstruct your arriving at the idle screw. Turn your idle screw the clockwise way to the point that the needle comes into contact with the seat. Presently the screw should be pivoted counterclockwise a turn or two. Please turn on the lawn mower and leave it idle for at least up to five minutes.

Turn the idle screw

A short time later, turn the idle screw both in the clockwise and counterclockwise directions till the engine idling starts to back off one or the other way. Whenever this has been done, return the screw to its position in the middle.

Is cleaning the carburetor enough?

As well as cleaning a carburetor, you ought to consider buying a carburetor repair kit to replace a portion of the significant carburetor parts like the float and float needle, gaskets, and diaphragms. If the carburetor performs ineffectively, you may have to replace the old carburetor with another one. Know that a dirty air filter or a clogged fuel filter can likewise cause a lawnmower engine to slow down or run unpleasantly. As a feature of your yearly lawn mower maintenance, you should consistently replace the air filter and fuel filter with new ones.


Your lawnmower’s carburetor is an essential element for usefulness and will be the thing that decides if your lawnmower works for quite a long time or conks out early. Keeping this on your priority list, figuring out how to clean your lawn mower carburetor is an essential piece of precaution maintenance. We hope that you have got a considerable amount of knowledge about the procedure. Thank you for your patience.

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