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How To Start Lawn Mower Without Primer Bulb

How To Start Lawn Mower Without Primer BulbMowing a lawn with a lawnmower is a facile and pleasant process. A lawnmower can make your lawn look fresh and fascinating. But it is possible only when your lawnmower works properly.

As a regular lawn mower user, you know that the primer bulb is an inseparable part to start a lawnmower. And most lawnmower uses a primer bulb because they do not have enough space to accommodate a carburetor.

Now come to the point. Is it possible to start a lawnmower without a primer bulb? Of course, it is possible and you can do it yourself.

How To Start Lawn Mower Without Primer Bulb

So, how can you do it? Do you have any idea how to start a lawnmower without a primer bulb?

If even don’t, nothing to hesitate. We are here to remove all the obstacles that you face to starting a lawnmower without a primer bulb.

So why late? Let’s see what’s new is waiting for you!

What is a Primer Bulb?

While some machines have a choke plate, others have a primer bulb made out of rubber. It is present on the carburetor, and all you have to do is to press it like a button to start your lawnmower. It works by squirting fuel into your engine. It is the easiest way to use a lawnmower, and many users swear by it.

However, in some unfortunate cases, the primer bulb gets damaged or stops working. The good news is that you don’t have to panic or run to buy a new lawnmower. The better news is that you can employ alternative methods to start your mower!

Why Do Lawn Mowers Need A Primer Bulb?

A lawnmower has a primer bulb because the carburetor is quite small. A carburetor mixes air and gas in the right quantity before injecting it into the combustion chamber on your engine. A small reservoir of fuel collects in the carburetor bowl. The action of the engine naturally draws fuel from the fuel tank.

But when the engine hasn’t started, the only fuel in the carburetor bowl is what’s left from the previous time you used the mower. If some time has passed since the last time the mower was running, the gas in the carburetor can have evaporated. So, for the engine to start, you need to pump new gas into the carburetor from the fuel tank. And that is what you are doing when you pump the primer bulb.

Without the primer bulb, you need an alternative method to get fuel into the carburetor to start the engine.

How to Prime a Lawn Mower Without Primer Bulb?

Here is one of the easiest and the most reliable alternatives. Read on:

We know that a primer bulb transmits gas in the carburetor bowl to turn the mower on.  But on the other times, the carburetor bowl remains empty and there is no gas remaining in the bowl.

A primer bulb is generally made of rubber or plastic. And starting a lawn mower without a primer bulb is an easy process. It approximately takes 5-6 minutes to complete the task.

First things first. You know some equipment that is required for this type of work. Let’s have a look at what we will require to start a lawn mower without a primer bulb.

Tools Required:

  • A screwdriver
  • A starter fluid
  • Hand gloves
  • Googles

Steps to Follow:

Step #1: Prepare The Lawn Mower

Take the lawnmower into a flat surface. It will make your task easier and comfortable.

Step #2: Activate Parking Mode

Take the lawnmower to the parking mode. This will prevent the lawn mower from being suddenly turned on.

Step #3: Find Out Air Filter

Now, find out the air cleaner. Most of the time, the air cleaner is on the engine side. Note that if you look inside the air cleaner chamber of the lawnmower, you will find the air cleaner.

The air cleaner is covered with a lid on top. And the cover is attached to the lawn mower body tightened with screws.

Step #4: Remove Screws

Take the screwdriver and unscrew the screws by rotating them anticlockwise. Carefully store the screws for repositioning.

Step #5: Bring Out Air Cleaner

Bring out the air cleaner from the air cleaner chamber. Make sure the air cleaner is not damaged in any way. When you withdraw the air cleaner, you will see the air cleaner chamber completely.

Step #6: Spray Starter Fluid

This time, take the starter fluid and spray it in the hole of the air cleaner chamber.

Step #7: Reinstall The Air Cleaner

Immediately reinstall the air cleaner into the air cleaning housing and place the cover. The reason for doing so is because the spray is volatile and it goes away very quickly.

However, make sure that the air cleaner is properly installed. If you place the air cleaner into an inverted position, it will prevent the flow of air.

Step #8: Start The Lawn Mower

Now turn on the power of your lawnmower. The lawn mower will be launched shortly.

Step #9: Set The Air Cleaner Cover

Tight the air cleaner’s cover screws using a screwdriver by rotating them clockwise.

Done. Now you can use the lawn mower without a primer bulb.

Cautions :

Wear hand gloves and goggles for safety purposes.

Go through the user manual before starting work. It will help you to avoid any kind of unforeseen incidents.

Be very careful in operating the screwdrivers.

Keep your children away from the lawnmower when you are repairing anything.

Final Verdict:

Starting a lawn mower without a primer bulb is an easy task. But always try to be quick when you work with the starter fluid. Since starter fluid is a volatile substance, rapidity is very important here.

If you follow all the steps described above, it will make your task easy and error-free. If you are unable to start the lawnmower after following the process, you may have to replace the primer bulb or take help from an expert technician.

Now, it is your turn. Hopefully, this article has given you all the necessary information on how to start a lawnmower without a primer bulb.

So, that’s how you can start a lawnmower without a primer – in under 5 minutes.

As you can see, it’s a straightforward fix that doesn’t require lots of tools or technical know-how. If you can use a lawnmower you should be able to follow these instructions and get your mower started without a primer.


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Tom Hanks

Tom Hanks is a DIY lover and an expert of tools to give you detailed unbiased reviews and guides on using and buying great tools for your DIY projects.

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