a carburetor on a lawnmower is very small compared to the larger ones commonly found in older cars. For this reason, carburetors used in small engines usually have a rubber or plastic primer bulb that pushes fresh gas into the carburetor bowl. This makes it easier to start the engine as fuel usually leaks out of the container during infrequent use. If you have a lawnmower with a missing or broken primer bulb, you can still run the lawnmower using another carburetor priming method.
Devoid of priming, there would be no flicker and the mower would not begin. The primer bulb on some lawn mowers tends to stop working after some deterioration. In this case, it is useful to know how to switch on the machine without it.
Here we will teach you exactly that. Whether the primer is broken, missing, or clogged, you will learn how to start the mower without it. Do you want to know more? Then take a look below!
What is a primer bulb?
While some machines have a choke plate, others have a rubber primer bulb. It is present in the carburetor and you just need to press it like a button to start your lawnmower. Primer works by spraying fuel into your engine. this is the easiest way to use a lawnmower, and it is trusted by many users.
However, in some unfortunate cases, the primer bulb becomes damaged or stops working. The good news is, you don’t have to panic or rush to buy a new lawnmower. The best news is that you can use alternative methods to start your mower!
How do primers work?
It is important to know that there are two types of primers: push bulbs and automatic primers. One of the primers works from the outside (bulb) and the other from the inside (automatic). Although they serve the same purpose, they work a little differently.
A bulb primer, for example, is a small piece of rubber on the outside that pushes gas inside. It pulls the fuel from the tank when pushed, sending fuel directly to the carburetor and combustion chamber.
The additional type of primer is automatic. It works more like a vacuum cleaner, pulling fuel as it goes through the carburetor when the machine is running. When the mower is turned off, the primer holds the fuel, so the next time the user starts the engine; they can release that fuel into the combustion chamber.
In any case, the main objective is to push the fuel through the carburetor into the combustion chamber. If fuel does not flow when attempting to start the machine, the primer is probably defective.
Things to consider:
While this is a relatively easy endeavor, you still need to be prepared for it. Here are some things to think about:
Priming the mower will take between 5 and 20 minutes, depending on your skill level. If you have experience with mowers, you may not need to spend more than 5 minutes.
For this process, you will need to look for starter fluid. It is a combination of fuel-related chemicals that replace fuel when the machine is not prime.
This fluid may be a little thick which could cause blockages and restriction of air flow. So use it with care without spraying too much when the time comes.
organize the Lawn Mower
Place the mower on a height exterior. It will make your task easier and more comfortable.
activate park mode
Put the mower in park mode. This will prevent the mower from suddenly starting.
Discover the air filter
Now find the air filter. Most of the time, the air filter is on the side of the engine. Note that if you look inside the mower’s air filter chamber, you will find the air filter. The air filter is covered with a cap on the top. And the cover is attached to the lower body tight with screws.
Remove the screws
Take the screwdriver and unscrew the screws by turning them counterclockwise. Carefully save the screws to replace them.
Remove the air filter
Remove the air filter from the air filter chamber. Make sure the air filter is not damaged in any way. When you remove the air filter, you will see the entire air filter chamber.
Spray the starting fluid
This time, take the starter fluid and spray it into the hole in the air filter chamber.
reinstall the air filter
Immediately reinstall the air filter into the air filter housing and replace the cover. The reason is that the spray is volatile and wears off very quickly. However, make sure the air filter is installed correctly. Placing the air filter in an inverted position will prevent airflow.
Start the mower
Now switch on your lawnmower. The mower will start shortly.
Attach the air filter cover
Tighten the air filter cover screws with a screwdriver by turning them clockwise. Made. You can now use the trimmer without a primer bulb.
So here’s how to start a primer-free lawnmower in less than 5 minutes. As you can see, it’s a simple solution that doesn’t require a lot of tools or technical knowledge. In fact, if you can use a lawnmower, you should be able to follow these instructions and start your mower without a primer.
Now is the time to grab a can of starter fluid and have the mower shut off again. Good luck and a good start!