Where to spray a carb cleaner on a lawnmower? Use these 7 steps


If you use a lawnmower, you might have heard many questions regarding cleaning the carburetor on it. Well, the carburetor is one of the essential parts of the lawnmower’s engine. It should be adequately maintained so that the lawnmower works perfectly. Cleaning the carburetor is essential and should be a part of the lawnmower’s annual maintenance schedule to improve fuel efficiency and the engine’s performance. However, there are two ways of cleaning the carburetor. One is by pulling it out and cleaning its parts one by one. The other method is by using a carburetor cleaner. People prefer the second method over the first one as it is straightforward and involved removing fewer parts. But some people may not be accustomed to using a carb cleaner. That’s what we shall elaborate on in this blog post.

Where to spray a carb cleaner on a lawnmower? Use these 7 steps:

  • Step 1:  Prepare the lawnmower
  • Step 2:  Remove the air filter
  • Step 3: Expose carburetor’s interior
  • Step 4: Spray with the carb cleaner
  • Step 5: Remove the deposits
  • Step 6: Replace cover and linkage
  • Step 7: Check the carburetor

Carburetor cleaners can effectively dislodge the debris inside the carburetor jets and improve the flow of air and fuel to the engine. Due to this, the engine’s performance improves. Generally, if your fuel quality has declined, there’s a high possibility of developing deposits inside the carburetor jets. Such deposits can cause the engine to start poorly or may cause it to stall during operation. Hence, it is inevitable to check and clean the carburetor. A standard carb cleaner may help you perform this job better.

The above steps will be further elaborated in this article.

Spraying carb cleaner on a lawnmower, Step by Step:

Before starting with the carburetor cleaner, there are some preliminary steps you should look at:

Step 1: Prepare the lawnmower

Before you begin repairing any mechanical or electrical machinery, you need to turn off its engine. In this case, turn off your mower’s engine if you were already mowing and allow it to cool down. Wait for a few minutes before attempting to clean the carburetor.

Step 2: Removing the air filter

After shutting off your mower’s engine, you need to remove the air filter on the engine. Air filters are used in lawnmowers to remove dirt and debris from the air supplied to the engine for combustion. It prevents the dirt from entering the carburetor.

Before removing it, clean the area around the air filter housing. It shall remove the dust and debris and prevent them from going inside the engine. A protective housing covers the air filter. Remove the housing from the air filter assembly by using a screwdriver. Now remove the air filter.

Check the following video for some hands-on demo:

Step 3: Exposing carburetor’s interior

After you have removed the air filter cover and the air filter, the carburetor shall be exposed to you. You shall see the carburetor’s connections and the linkage. Without removing these components, we cannot expose the carburetor’s interior parts. So, remove the fuel line connections and carburetor’s linkage.

Step 4: Spraying with carb cleaner

To clean the carburetor without removing it, you need the right kind of carburetor cleaner. There are many different types and qualities of carburetor cleaner. Purchase some commercial lawn mower carburetor cleaner. Make sure it is of the best quality. The steps below can be followed for efficient spraying:

  • Step 1: Spray the carb cleaner directly on the carburetor to clean it. Make sure the spray reaches the interior jets of the carburetor.
  • Step 2: The direction of spraying should be appropriately followed. Place the tip of your carb cleaner in the center of your carburetor. Start spraying on it thoroughly.
  • Step 3: Start from the center and then move your hands around and over the carburetor.
  • Step 4: Always keep in mind that your carburetor and engine should be running while spraying so that the deposits can be dislodged more efficiently.
  • Step 5: Only spray the carburetor. Don’t use the carb cleaner on any other part of the engine.
  • Step 6: For effective cleanliness, it should be penetrating the carburetor’s throat.

While cleaning, if you encounter any problem in following the steps, you can check the following video for further guidance:

Step 5: Removing the deposits

While cleaning, some dirt and fuel deposits get stuck at the lower throttle of your mower’s carburetor. These dirt and fuel deposits should be removed properly. After that, spray the carb cleaner on the choke shaft and the base of the carburetor’s throat to remove any debris. Now shut off the engine and keep on spraying on the carburetor center to remove extra buildup.

Step 6: Reattach the cover and linkage

After cleaning the carburetor, you now need to reassemble its parts properly. Reattach the cover and the linkage. Place the air filter in its original place. Use a screwdriver to tighten the parts of the air filter assembly properly.

Step 7: Inspecting the carburetor

It is better to inspect the carburetor after cleaning to see the improvements. While cleaning, you might have opened some linkages that may be crucial for the engine’s working. Take a flashlight and inspect all the components that were removed thoroughly. Check whether they are adequately attached or not. If not, you should fix them. Now start the mower and check its sound. Your engine should have a smoother start than before.

Following the steps mentioned above shall help you clean your mower’s carburetor more efficiently. Typically, one should clean the carburetor once per season. It enables the lawnmower to function without developing issues.

Some precautionary measures:

Safety is essential for every person. While repairing any mechanical or electrical machine, you need to take care of some safety measures. While cleaning the carburetor, you should also keep in mind the following safety measures:

  • Use Gloves: Your hands must be covered with gloves so that you do not get them all oily or greasy. Also, you do not want to get burns if some parts are hot.
  • Remove the plug: Make sure to unplug the spark plug wire because you do not want to get an electric shock while fixing your lawnmowers.
  • Careful Handling: Be careful with the types of equipment you use. You should get help from a professional if you do not know the use of some equipment types.
  • Check the guards: Make sure guards are in place and secured. By doing this, you can fix the carburetor without damaging other parts of your machine.
  • Use first aid box: You should keep the first aid box with you to treat any injury timely instead of rushing here and there at the moment of need.

Frequently asked questions:

1. Which lawnmower carb cleaner is best?

Carb cleaner is a spray that is used to clean the carburetor without removing it from the engine. A good quality carb cleaner should be used to clean the carburetor. This ensures that it does not cause any further issues and work effectively for a longer time. Choke cleaner is known for its best quality as one of the best carburetor cleaners. Therefore, you should prefer to use choke cleaner to clean your carburetor.

2. Lawnmower carburetor still not working well after cleaning, what to do?

If you have cleaned your mower’s carburetor thoroughly by completely following the steps mentioned above, the machine is still not working correctly. Then you have no other option other than calling a professional. The specialists have a wide range of experience in managing these small vehicles, and they have complete knowledge of how to handle such extreme cases. A lawn’s carburetor is an essential component in the operation of a lawnmower, and it is essential to maintain a regular check on it. It would be good if you spent some time on its regular maintenance so that it could work effectively for a more extended period without causing any issues.

3. Is it harmful if the carb cleaner is accidentally sprayed on other parts of the lawnmower engine?

Carb cleaner is used to clean the carburetor. It removes dirt and oil deposits from the carburetor. If you have accidentally sprayed the carb cleaner on other parts of the engine, there is no need to worry. It is not harmful to your engine as it is built to dislodge any form of sludge on metal parts.

Final Remarks:

To conclude, we can say carburetor cleaning is essential for an engine. If the carburetor is not maintained well from season to season, it may develop further problems. And your lawnmower performance may decrease. You can clean the carburetor of our mower without removing it with the help of a carb cleaner. This article has given a step-by-step process about cleaning the carburetor with a carb cleaner’s help. Keeping in view the given instructions and safety measures, we can easily clean a carburetor with a carb cleaner’s help. Don’t forget to perform maintenance of other lawnmower parts such as filters, spindles, blades.

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