Using blades with a fine edge when mowing your grass is one of the most effective ways to maintain a healthy lawn. The grass will be ripped out of the ground, which will weaken it and make it more susceptible to illnesses. Therefore, sharpening the blades is the best strategy for reducing the amount of time it takes you to mow and ensuring that you do not become too exhausted. However, prior to purchasing new mower blades, it is important to do an inspection of the old ones to determine whether or not they require replacement.

When to Replace a Lawn Mower Blade?

  • If the lawnmower is cutting grass unevenly

  • When the blade is bent or damaged

  • When the blade is dull after sharpening

  • If it is more than a few years old

  • When the the condition of the blades is bad

  • Torn grass

So, when should you consider replacing your mower blades? Read to know some of the signs that the blades are not working as they should, and when the replacement should happen.



Signs You Should Replace Your Mower Blades

If you have sharpened your blades on multiple occasions, but they still appear to have too much damage, it would be in your best interest to get a new set of blades. The following are some of the signs that it is time to replace these blades:

● Cutting Grass Unevenly

If your grass seems uneven after mowing, that is an indication of dull or damaged blades. Normally, your lawn mower should cut the grass at a similar height if the blades are sharp. However, when these blades are damaged or dull, you will be forced to mow the same area a couple of times before getting the desired results.

● Bent or damaged

It is common for the blades to bend or damage if you accidentally mow over the rock and debris. A bent blade is often off-balance and poses a safety threat to you and the mower. Replacing it on time could save you lots of money, and ensure mowing happens without any complications. So, how do you know that the blade is bent?

  • Bumpy when mowing.

  • Strange noise when you start the machine

  • If your mower stalls.

● Dull After Sharpening

If you sharpen the blades and they still don't cut the way you want them to, you realize you're dealing with something more sophisticated than you thought. A dull blade makes it difficult to achieve even cuts, which can contribute to the unhealthy state of a lawn by ripping the grass out of the ground. Sharpening the blade over and over again does nothing but make it weaker and more prone to serious damage; therefore, you should work toward replacing the blades. If you want to extend the life of your blades and get more use out of them, make sure they are always sharpened and go through a thorough inspection after each time you mow. Additionally, ensure that the blades are cleaned after each session of mowing and that they are dried thoroughly to prevent rust.

● If It Is More Than A few Years Old

Generally, manufactururs recommended to have the blades replaced every few years. Of course this greatly depends on how loing you use your lawnmower. If you have a large lawn and use if often it can even mean you have to change your blades yearly. But if you use if less often, maintain it well, and do not damage it, the blade can be used for many years.

● Look At The Condition of the Blades

Check to see if the blades are dented or chipped since they will not cut the grass evenly. That might be as a result of corrosion caused by moisture in the lawn or dirt. If you constantly sharpen the blades, it could lead to weakened metal, and you will be forced to replace the blades.

● Torn Grass

Inspect your grass to see if the tips are cut and if they look torn out. That indicates the blades are damaged since that is the only time your grass will have a nasty cut. If that is the situation, have the blades replaced immediately since that could be harmful to the grass as it inhibits healthy grass growth.



Common Errors People Make When Replacing the Blades


During the blade replacement, people are prone to make mistakes such as:

  • Direction: Placing the blade in the wrong direction.

  • Replacing it too soon: Replacing a blade that can still be sharpened and perform the tasks well.

  • Replace it wrongly: Trying to replace the blade without any experience or without asking for help from an expert.



Different types of Mower Blades


Since there are different types of mower blades, look at the manufacturer’s data to ensure it is suitable for your lawnmower. Here are a few great choices to consider:

  • Gator Blade: It is a 3-in-1 blade with medium, low, and high lift, allowing you to use different cutting techniques. The blades are easily spotted in stores as they have serrated sections at the end.

  • Basic Mulching Blade : It is enough to cut grass and fits in a range of mowers. The blades have distinctive and curvy edges, enabling you to cut the grass finely.

  • High-Lift Blades: The blade produces airflow useful in pushing grass clippings into the discharge chute. It helps give your yard a perfect trim and cut it to the utmost precision. These blades range from 1-20 inches, hence suited for a yard with long grass.



When Should You Replace The Lawn Mower Blades?


If you're like the typical homeowner, you should change your mower blade at the beginning of each season. It is important to replace the blades before the season begins if they become damaged. Inspect the blades to check how they are holding up and follow the instructions in the manual before replacing them. If you need to replace something while the warranty is still active, the manual should tell you how to do it safely. Put on some sturdy gloves to safeguard your hands while you're working with these blades.

Depending on how often and how hard you mow, the average lawnmower blade might last anywhere from 200 to 400 hours. It's possible that more frequent than once yearly blade replacement will be required if your yard has large quantities of sticks and stones. Make sure you've sharpened it a few times before you throw it away, but if it's worn out or continually dulling, it's time to acquire a new one. Mowing using sharp blades is the best technique to get a precise cut. A simple way to make mowing less of a chore is to keep a spare blade on hand and switch it out between cuts.

To keep your lawn free of pests and diseases while still looking its best, you'll need high-quality tools for your lawnmower. Even the healthiest lawns could be harmed by using the improper blades, so it's important to keep an eye out for worn or broken ones to prevent discoloration. If you see damage to the blades that can't be fixed by sharpening, it's in your best interest to replace them immediately so you may continue mowing without interruption.




 Should You Sharpen Or Replace Your Mower Blade?

There are things to look out for as they determine whether your blade needs sharpening or a replacement. Pay attention to how it is cutting the grass, and if there are dents on the blades. Sharpening should be done if your blades are dull and have not been in constant use, meaning that there is still metal that you can sharpen. If the blades appear thin, then you should replace it. Also, you have to put into consideration how long you have used the blades to know if it is suitable.

How Often Should You Sharpen Your Blades?

It is recommended that you sharpen your blades at least twice per season, but this is not always necessary. Especially if you mow over rocks or sticks, it should be done at the beginning of the season and someplace else in the middle of the season. The way the blades feel after each round of mowing should serve as a guide for determining how often they need to be sharpened.

Are New Mower Blades Sharpened?

Some brands have a small amount of coat paint, and you will need to sharpen the blades before using them. However, most brands do not require sharpening since they are in good condition, so do not waste your time sharpening them. New blades are ready to be used, so install the blades once you get them.

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Final thoughts


It doesn't matter how often you mow, your blades should constantly be sharp and in good condition. Blades should be replaced when they show signs of wear and tear, such as dents, cracks, or dullness. Check your lawnmower's blades carefully for any signs of damage. It's important to repair a damaged blade as quickly as possible, both for your safety and the machine's longevity.

Your lawn will suffer from dull blades since it will be pulled apart each each mowing. Because of the constant effort required to maintain the lawn's appearance, the life of your mower is shortened as a result. After each cutting, inspect the blades to make sure they aren't ragged. You may learn when it's time to replace your lawnmower blades, what options you have, and how to prevent frequent mistakes by keeping an eye out for the warning signs provided here.

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