How to Clean a Lawn Mower Carburetor Without Removing it?

Are you trying to figure out why your lawnmower is less efficient than it was before? It might be the right time to clean your lawnmower’s carburetor.

The carburetor is an essential part of the engine. This device allows the passage of air into the fuel to create internal combustion. To put it in simpler words, it acts as a power source for the blades.

So, as you mow your lawn, twigs, grass, and debris get into the engine’s carburetor and results in slow performance. So, keeping your engine’s carburetor in check is a MUST.

The safest option is to clean the carburetor without removing it. Because it may seem like an easy task to remove the carburetor and clean it. But the main problem arises when you try to put it back again. So, if you are a beginner, do not remove the carburetor for cleaning it. Here are some easy steps to clean a lawnmower’s carburetor without removing it.

How to clean a lawn mower carburetor

There are different methods of cleaning a carburetor without removing it. Here we have specified two methods.


Through this method, you can clean the external part of your carburetor thoroughly. This method will work out for engines that are regularly maintained.


Firstly turn off the lawnmower. Get a good look at it to understand whether it needs a clean-up or not.

Access the situation carefully. Because unless you are sure it needs a clean-up, do not do it. Because it will do more damage than good.


After you’re sure that it needs cleaning, get an aerosol spray. It is highly recommended to get a spray that is designed for carburetor cleaning.

Then after applying the lubricant, start your mower. It will get rid of the dirt and debris accumulated on the exterior side. However, if the mower still doesn’t start, then it is a sign that it needs a deep cleaning.


If the above method does not work out, then try this method. It exposes the carburetor’s internal part and gives it a deep cleaning.

First, you need to check the air filters out. You should clean it thoroughly if it has any debris or dirt accumulated. Open the cover of the air filter to get a good look at the interior. After opening the cover, remove the exterior cover and linkage of the carburetor as well.

After exposing it, spray some cleaner on it and clean it thoroughly. There’s an effective way of spraying aerosol. Here’s how you should do it.

The tip of the spray should be placed at the center of the carburetor while spraying. When you are doing this, make sure the engine is turned on. This method will effectively clean the carburetor.

After you’re done, turn the engine off. You will notice that there are oils and debris accumulated at the base of the carburetor. Respray some aerosol onto that region and clean the deposits.

How to clean a lawn mower filter?

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The air filters are an integral component of lawnmowers. It would be best if you always kept it in check for maintenance purposes.

While mowing the lawn, it is very common to get grass, dirt, or debris stuck into the air filter. If the air filters are worn out, dirt and debris will enter the carburetor resulting in poor performance. A worn-out air filter can also eventually damage the engine of the lawnmower.

So, you can understand why it is highly recommended to keep the air filters clean. Replacing the air filters will not only improve the performance but can also increase the lawnmower’s durability.

Cleaning air filters is the easiest task out of all during a full clean-up on a lawnmower. More frequent cleaning is necessary during dusty conditions. Typically, it would be best if you replaced or cleaned air filters every 300 hours. Enough chit-chat; let’s find out how to clean them.

At first, turn off the lawnmower and wait for it to cool down. Then, unplug the spark plug wire and remove the air filter cover. You will notice foam from the pre-cleaner that you need to rinse with water and wait for it to dry. What comes next is pretty simple, remove the filter paper and replace it with a new one. After you are done replacing it, get a new air filter cover and put it on top. Lastly, reconnect the spark plug and you are done!

It was pretty easy, right? As easy as it sounds, do not underestimate the safety precautions because it is still risky. Moreover, do not turn on the engine without any air filter because it will damage the engine.    

How to clean a push mower carburetor?

Just like a self-propelled lawnmower, a push mower also has a carburetor to help the engine run. A dirty carburetor will always hamper its performance no matter what type of lawnmower it is. So, maintenance is essential.

Firstly, remove the engine cover, air filter cover and air filter housing so that you can get a better look at the carburetor. Then shut off the fuel valve and detach it from the carburetor. Things might get a little messy from here onwards. Afterward, you need to detach the choke and throttle linkages and slide the carburetor off the mounting bolts.

Secondly, unthread the screw of the carburetor bowl and carefully disassemble the carburetor. After dissembling, as the ports are exposed, spray a small carburetor cleaner and clean it thoroughly. In addition to this, you can also clean the carburetor bowl. Lastly, wait for the parts to dry. And put the clean carburetor back onto the mounting bolts. Reassemble the things you have dismantled, and there you go! You have a squeaky clean carburetor now.

Related Article:

Why is oil coming out of my lawn mower exhaust?

How to Remove a Lawn Mower Spark Plug without a Socket


To wrap it all up, we hope you understand how important it is to keep your carburetor clean. The improved performance will amaze you.

A dirty carburetor can eventually damage the engine and lower the lawnmower’s durability. So, always keeping an eye on its maintenance is a must. There are various ways of cleaning a lawnmower’s carburetor. You can either clean it by removing the carburetor or by not removing it. Whichever is preferable to you. However, you should remember that you will always need to keep the carburetor clean no matter what type of lawnmower it is.

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