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Why Should I Keep Your Lawn Mower Blades Sharp?

Having a sharp lawn mower is not only necessary to cut through the grass, but also essential to keep your work area safe.

A dull blade will drag on the ground or cause you to slip when you have to pull it back quickly. The blade may also become stuck in the grass, making it difficult for you.

Keeping blades sharp prevents them from getting stuck in the grass and damaging your property. But there are other benefits of keeping these blades sharp as well; they are easier to maneuver and safer for you and others.

It helps if you pick up a can of blade oil when buying a new blade so that your blades stay sharp enough for cutting through tough grasses without having any trouble.

In this article we’ll discuss why you should use sharp blades in your lawn mower. Read ahead to learn.

A man is sharping lawn mower blade
Sharping lawn mower blade

Benefits of sharp blade in your lawn

Mowing your lawn with a sharp blade has its benefits. No matter the size of your lawn, you can benefit from using sharp blades. Mowing with sharp blades is a great way to save time and effort. 

These include a cleaner cut and faster recovery time for the grasses. The grasses will also gain the potential to fight off any disease on your lawn. 

The most popular types of blades are mulching blades because they produce less noise and collect more clippings than other types of blades.

Dull blades can cause a lot of harm to the grass. If you have noticed your lawn has become brown or yellow in some areas, it could be due to dull blades. It makes the lawn appear yellow and raggedy. 

Dull blade of lawn mower
Dull blade of lawn mower

Dull blades also pull up portions of the grass and pulls on the entire plant because it can’t slice the grass properly.  By cutting grass with a sharp blade, you can save yourself a lot of effort and stress. 

The sharp blade of the lawn mower is a simple yet effective way to save your engine. Without it, grass will be harder to cut and will put additional stress on the motor. 

The sharp blade will cut the grass quickly and efficiently without putting much stress on the motor. The sharp blade will also ensure that you don’t have to work hard to cut the grass and put added stress on your motor.

In order to get the best results out of your lawn, you need to make sure that you maintain your blades. To keep your lawn lush and green, you should change your blade regularly with a sharp one that is suitable for cutting through tough turf. 

You also need to make sure that when you do mow that you’re not putting unnecessary stress on the engine.

Mowing is easier

When using a lawn mower, it is important to know how to use the sharp blade properly in order for it to operate more efficiently. Using a sharp blade for mowing is not only going to save effort, but also to prevent the engine from wearing out quickly. 

The sharp blades can cut through grass more easily, resulting in less engine drag which will cause your mower to last longer. It also helps in cutting faster and more evenly.

Your lawn will look cleaner

A dull blade will tear off the top portion of the grass, causing it to look uneven. It also creates ripping action. It can lead to unnecessary stress on the grasses.

It’ll also make the lawn mower dull, dry and will die quickly. It’ll causes the engine to lose power under load.

Ripped grasses in a lawn
Ripped grasses

The first step in owning a sharp blade is to make sure that the blades are cleaned before use. You can get a nice, clean shave and make your lawn look a whole lot better by using a sharp blade in your lawn mower. 

While a sharp blade is an easy-to-use tool that can help you get the job done quickly, it is essential to know what these blades can do to your lawn before using them.

Prevents turf disease

Turf disease is a common problem that occurs in many lawns. It stems from the accumulation of bacteria and fungi on the turf, which can be caused by any number of issues that come with extreme weather conditions. 

a person is pointing Lawn disease in a lawn
Lawn disease

It is a problem that can be prevented by using sharp blades in your lawn mower during hot, steamy conditions. Sharp blades provide a clean cut and promote photosynthesis, helping grass regrowth to happen faster in your lawn.

A dull blade may not cut through the ground, causing roots to be pushed back up and leading to a longer wait before your grass grows back. The Grasses require a clean cut for photosynthesis to take place. 

A sharp blade will also promote faster grass regrowth because it can slice through the soil and allow the roots to push through. 

Frequently Asked Questions

What does a dull mower blade do?

When the blade of your lawn mower starts to get dull, it will not only lead to an uneven cut and a mess, but also cause dirt and grime to build up on the blades. Eventually, this will lead to a lawn disease. 

When a dull mower blade is used, it can lead to lawn discoloration, which in turn can result in lawn disease. The sharp cutting edge of a dull blade may also cause the grass to be pulled up during mowing.

How often should mower blades be sharpened?

Mower blades need regular sharpening to ensure they are providing the best possible performance and that they are safe to use. However, the frequency of which blades should be sharpened can vary depending on your mower, cutting height and frequency.

Mower blades need to be sharpened after every 20-25 hours of use time, keeping your mower in good shape and maintaining a healthy lawn.


The blades of your mower are likely the most important component that is used for lawn mowing. If these blades are dull, there is a higher risk of injury to you or someone else when cutting grass. It can also cause damage to your lawn mower if it’s not properly sharpened.

To make sure that you do not have to worry about this situation, keep your blades sharp. This will allow you to have a safer and more efficient mowing experience and prevent injury from happening in the long run.

Sharpening your lawn mower blades may be more difficult than it sounds. There are many different tools available on the market that claim they will sharpen them, but they often don’t work as well as expected. One of these tools is a metal file with.

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