When Do You Change Lawn Mower Blade? Our Guide Here

Written By James
Updated July 26, 2021 by James

When Do You Change Lawn Mower Blade? Our Guide Here

If you cut the grass on a regular basis, you will eventually have to change the blades on your lawn mower.

Dull blades will tear the grass, leaving your lawn looking patchy, and burning your engine out. Changing the blades is quick and easy but it is important to know when to change them.

Mower blade life spans vary depending on the size of the blade, the type of grass you are cutting, and the terrain you are mowing.

Mower blades are either made of steel or carbide, and replacement time is determined by how much wear and tear they undergo. If you notice your lawn is not looking as healthy as it used to, or the grass is growing taller and thicker, it is time to replace your blade.

It is also worth mentioning that mower blades are also prone to rust. When mower blades are exposed to moisture, they become more susceptible to rusting. Rusting is a form of corrosion and is the rusting of steel. Rust causes the blade to become more brittle.

Know the Types of Blades

There are many tools that you can buy for your lawn and garden. The right one will help you get the job done. 

Keep in mind that all blades wear out. Even if you have the best lawn mower in the world, the blades will become dull after a while. When that happens, you can either buy a new lawn mower or buy new blades.

As we all know that is lawn mower blades are an important part of lawn mowers, they are responsible for cutting grass and keeping the lawn tidy.

Normal lawn mower blades are made of steel and are usually sold in sets of three, four or five blades.  Though the actual part of a blade that cuts grass and weeds may only be a small part of the blade, it is still the most important part, and it is the part that will wear out first.

Signs you need a new lawn mower blade

When it comes to maintaining a beautiful lawn, most homeowners take their mower blades for granted. They're easy to forget about, until one day you realize that you've been walking around on a lawn full of holes.

A mower blade is an essential tool for a healthy, professional-looking lawn.

Like most tools, however, it will eventually wear out. When that time comes, you'll need to replace it.

Here are signs that it's time to do just that.

It's more than two years old

If you've used your favorite lawn mower blade for two or more years, you may be wondering if it is time to replace it. Most blades last only a year or two before they need to be replaced.

It's bent

When it comes to working on your grass, you need to make sure that you have the right tools for the job. The right lawn mower blade will save you a lot of money and a lot of headache.

If you don’t get the right blade for the job, you may find yourself struggling to get through the thick grass on your lawn. If you can’t get through the grass, that means you need a new blade.

Having a mower blade that is bent is a serious problem for any lawn mower user. A bent blade can cause a lack of power that can stall your lawn mower engine, as well as potentially nicking the lawn itself.

Not to mention, a bent blade can also be dangerous for your mower or you. Fortunately, it is easy to check for a bent blade and to replace it if it is damaged.

It's dull and you've already sharpened it twice

A dull lawn mower blade will make your mower harder to start and will make your lawn feel rougher to walk on, but it's easy to overlook these symptoms when you're focused on more visible parts of your mower.

A dull blade will also let you overheat your engine more easily, which then causes thicker black smoke to come out of your exhaust pipe. To avoid these problems, a good rule of thumb is to replace your blade once a year.

You may be a true gardening professional, but even the most well-versed home gardeners can suffer from a bit of an identity crisis. For instance, if your lawnmower blade loses its edge, it is undoubtedly an indicator that you need to purchase a new blade.

But how do you know when it is time to buy a new blade? The answer is you need to pay attention to your blade's condition. If you sharpen your blade too much, you're going to damage it and make it too dull to cut grass any longer.

There are dents, gouges, and/or pieces missing.

Mower blades, no matter how well made, will eventually get damaged. But most mower blades do not need to be replaced because they are damaged beyond repair.

Instead, they need to be replaced when they are no longer sharp or are unevenly shaped, two conditions that make them ineffective at cutting grass and can actually damage your lawn. Mower blades come in two basic shapes—flat and curved. Flat mower blades are ideal for cutting grass in places like pastures or yards that are flat or bumpy.

Curved blades work best on lawns with many curves. They can also be used to cut grass over hills. Flat blades are usually thicker, wider, and have fewer teeth than curved blades.

Tune-up your lawn mower before summer: Clean, change the oil, sharpen its blades

If you’re thinking of keeping your lawn looking fresh and green during the hot summer months, you might want to check your lawn mower before you start.

Unless you’ve recently serviced your mower, there’s a good chance there’s dust, dead grass, and even bugs stuck in the blades. Not only is this unsightly, but it can damage the mower. To keep the blades sharp, it's a good idea to sharpen them once every three months.

It's also a good idea to check to see if the blade is dull at the beginning of spring or after heavy use. If you notice the blades look dull and rough, sharpening will be necessary.

Last Words

A lawn mower blade is the second most important component on a lawn mower. It is the part of the mower that does the actual cutting of the grass. You can say if the blade is sharp, your lawn will look nice and if the blade is dull your lawn will look ugly.

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My father, and his father before him, and his father; for the past 3 generations, my family have always been into gardening. The green fingers is a gift passed down to me and I thoroughly enjoy it! I also have worked in the manufacturing department for Bosch and DeWalt so I like to think I know a thing or two about tools and such!
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