How to Clean a Carburetor on a Lawn Mower Yourself

how to clean a carburetor on a lawn mower

If you ever have to make a list for home maintenance equipment pieces, will you count the lawnmower in it? Perhaps yes, because it’s surely one very important vehicle tool that leads tumble life to keep your lawn looking neat and tidy.

The rough and tough situation handler lawn mower also needs some occasional care and attention. And so, knowing some good tactics on handling the many parts including carburetor for clean-up is necessary.

You already have guessed, today we will focus on how to clean a carburetor on a lawn mower. It could be done with or without removing the part from a lawnmower. We’ll discuss both.

How to Clean a Carburetor on a Lawn Mower Without Removing It?

So first you need to turn off the lawn tractor or mower and let the engine cool down. Then simply get rid of the air filter cover using some screwdrivers. The carburetor should be exposed for you to clean down.

Now use an aerosol cleaner to spray on the center of carburetor. You want to keep the carburetor running while doing so. So that the cleaner can go deep inside and clean throat part as well. This will also help in getting rid of unnecessary deposits that might be existing in the throttle plate.

You should also not forget the carburetor throat’s base area where the choke shaft is existing. So that any extra grime is not present. Do this after shutting the engine. Change the cover and linkage of carburetor. Let the air filter get back in place and screw it securely.

How to Deep Clean a Carburetor on a Lawn Mower: The Better Way…

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Of course, you can try cleaning the carburetor without removing it from lawnmower. But a more effective cleaning is possible if you to decide to work separate. That will allow better observation and access to the part. And so, I’ll surely discuss the better way in more detail… It’s nothing complicated so you can do it easily, chill!

Also, remember that this method is for those gas-powered lawnmowers. Enjoy the Step by Step Guide Below.

An Important Tip: In case this is your first time trying to clean a lawnmower’s carburetor, removing it might be a little confusing. You may forget the order of putting things back after cleanup process ends. So, to make such dilemmas and difficulties fade away, simply try taking some pictures when you are dissembling parts. Later when you are done, simply have a look at your taken pictures to know exactly where the detached parts should be placed. It’s the quickest & simplest way to handle the confusion related to reassembling.

Start with Safety Arrangements…

Safety should be a primary concern for everyone when dealing with parts of equipment and vehicles. The old fuel can be pretty noxious. So, you want to work within a good ventilation supported area. Working with carburetor demands you to do this.

Most of us will use the garage to do such cleanup tasks. So, you want to open all the windows and doors of that garage or any area you’ll be working in. Using a ventilation fan can also help a lot. Of course, you can’t work inside a garage that does not include windows or doors.

Apart from Cleaning What Else Needs to Be Done?

You will be taking apart parts from the lawnmower. It’s a good chance to observe and check whether there is any problem inside the machinery. Don’t jump into conclusions while diagnosing a problem. It could be a simple one and you’re stressing over for no reason thinking it in a complicated way.

Start by checking if there’s fuel in it. Make sure the ignition is working right as well. You also want to have a look at the spark plug for whether it is dirty and needs cleaning.

Finally, focus on air filter and figure out if it’s messed up with debris. Once you sort out all these check-ups in order, get some carburetor cleaner and jump into the next step.

Detach the Air Filter By Removing Outer Casing…

You need to have access to the lawn mower’s inward parts. To make this happen you need to get rid of the outer casing using screwdrivers. Next, simply take the air filter outside. You should be able to see the carburetor now.

Unscrewing Carburetor to Remove It…

The carburetor should be in its place bolted securely. You need to unbolt it and then the thing should come out from fuel line easily. There’s a good chance of fuel spilling out from both carburetor and fuel line. So, you better be ready with a rag to catch all those spilled liquid without messing the entire area.

Sometimes you may notice that there’s no fuel spilling out when you’re trying to detach the carburetor. More than being good news it actually indicates damage to the fuel line, possibly blockage. You may need to clear that yourself or take it to a repairing shop.

Bowl Unscrewing & Nut Cleaning…

A single nut should be present to hold the carburetor bowl. Use some carburetor cleaner to clean the bowl ‘s surrounding first. Then go for unscrewing nut for detaching bowl. The nut should look like a hole included jet. This hole needs to be free from any sort of obstacle.

Using a wire piece or paper clip, you can simply clean the hole. Spray carburetor cleaner on the nut to finish it off. If you notice that the bowl is too dirty to clean or damaged, go for replacing it.

Replacing Needle & Gasket …

There should be a pin included float attached to the carburetor. You need to get rid of the pin and replace needle. A tiny gasket should be holding the needle in place. Make sure you fit new one in exact manner of the previous needle. Do this for the gasket as well, if it requires modification.

Reassemble Everything Back Together…

You should put the cleaned carburetor back in place. Reattach it in the original spot and make sure to bolt securely. You can use the pictures taken while dissembling to make it simple. Once everything is back in its place, pour some fuel in the tank. Try to start it up and the lawnmower should work just like before.

The Time Interval for Carburetor Cleaning.

There’s no exact recommendation for this, but experts do suggest having a check more than a few times every year. Since you’ll be using the lawnmower through twigs, debris and grass, there could be troubled caused internally that you won’t be able to notice before machine stops working.

So, it’s always good to take precautions rather than repairs. Make sure there’s no debris winding up your lawnmower’s carburetor and clogging fuel to disturb its performance.


And that’s all for how to clean a carburetor on a lawn mower whether you want to remove it or not. I’ve tried to keep both process clear. Just make sure to have a look at the equipment’s manual before trying anything at all.

It should not damage or invalid the warranty coming along, you want to make sure of that before trying any repair or internal cleanup. If you feel confused about handling internal parts, there’s always an option of getting help from a professional. After all, expert touch is always a step ahead from DIY styles.

About Jeremy

Hello! My name is Jeremy Bloomberg. I have been passionate about carpentry and DIY. Over the years, my passion slowly turned into expertise and wider knowledge about electronics. I’ve been involved in numerous projects, both professional and personal. I want to share all I have learned with you. Welcome!

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