How To Sharpen Lawn Mower Blades

Well, it’s that time of year again when everyone’s getting their lawnmower out ready to cut the grass. So let’s check if the lawn mower’s blade needs to be sharpened or not and if it does let’s sharpen it.

How To Sharpen Lawn Mower Blades (Step by Step)

How To Sharpen Lawn Mower Blades

Step 1. Disconnect the spark plug lead of the Lawnmower.

So the first thing you need to do is disconnect the spark plug. For safety purposes, you must remove the spark plug wire.

Step 2. Lay the lawnmower straight Up.

The next step is to tip the lawnmower straight up. Remember do not tip your lawnmower side to side. Because most of the time it leads to oil/gas leaking.

Step 3. Take the wrench to undo the bolt in the center of the blade.

The next step is to undo the bolt in the center of the blade. Just put on a glove, or hold the blade with a cloth wrapped. Now use the right size socket to undo the bolts. Because if you don’t use the right size socket for the bolt. Then you can round them off very easily.

Step 4. Remove the rust and grass from lawn mower’s Blade.

Now you can just take a paint scraper and take off as much of the junk as you can. After removing all the rust and grass from the blade. Let’s move onto the next step.

Step 5. Take a metal file and sharpen the blade.

Now you must be wondering why I didn’t choose an angle grinder or the lawnmower blade grinding tool. I’ll discuss that in detail in a few minutes. Personally speaking, I have used all types of tools to sharpen the blade. But my most favorite method is from metal files. Frankly speaking, I like the old school techniques much better. Although they are a bit time-consuming.

So now let’s talk about how to sharpen the blade. So first put your blade on the vice and then take the metal file and follow the same angle that the blade was originally sharpened at, And just draw your file along there until you’ve got a nice sharp edge. Just make strokes in one direction. To avoid any disbalance in the blade.

Step 6. Check the balance of the blade before putting the blade back.

After we’re finished sharpening it. We want to check it for balance to make sure that the lawnmower isn’t going to shake all over the place. So just take a nail and hammer it into the side of your workbench and then hang the lawnmower blade on the nail and it should balance out pretty evenly. In case it doesn’t balance out evenly than just grind off the extra metal from that side of the blade.

Step 7. Put the blade back on the lawnmower.

Now let’s put the blade back on and just make sure to put it back nice and tight. And lastly don’t forget to put your spark plug boot back.

Q & A

Is It Worth Buying a Lawnmower blade sharpener?

Lawnmower blade sharpeners are becoming very popular nowadays. You can buy one for under $10-$15. You just need to attach the sharpener to the power drill. And just put it onto the blade and start grinding. It’s easy, simple, and effective. You don’t have to detach the blade from the mower for sharpening.

But honestly speaking I don’t find it much helpful. I purchased one from Amazon for $11. And it takes around 10-12 minutes to grind the blade and with lower psi drills it performs the worst. It is better to just use the grinder. If you wanna give it a shot then it’s not that much expensive. You can go for it.

How often should you sharpen the lawn mower’s blade?

On average for a lawn of a quarter acre size, you should sharpen the blade 2-3 times per season. If the lawn is bigger than a quarter acre then you should sharpen it every 8 hours of use.

When to Change your Lawn mowers blade?

If the blade of your lawnmower is too thin and starts chipping at the edges and you are seeing mild cracks in the blade. Then it’s time to change the blade.

Lawnmower blade sharpening cost

On average the cost of sharpening a lawn mower’s blade is around $8-$10. If you sharpen it on your own then it’ll only cost time and nothing else. Don’t try to weld it because it can cause more harm than good

5 Best Lawn Mower Blade Reviews In 2022

1. Toro Mower Blade 

Toro Mower Blade

The 22" Recycler Mower Replacement Blade from Toro is perfect for lawns and parks with tall grass. The blade retains its sharp edge for efficient mulching. This blade can be used on even two Toro mowers! The blades for Toro mowers can be difficult to find and many customers must buy them separately.

In this model, you will have the advantage of the increased cutting area and blade sharpness from the 21 or 23 inch large blade mowers as well as the ease of mounting it onto the Toro. The blades have been designed by experts who have experience handling high workloads in commercial lawn mowers to create a blade that is reliable and durable.

Due to the blade's wide diameter, you will be able to cover more ground in less time with a high level of precision. The blade is strong enough to endure frequent use, yet light enough to be handled easily.

With this blade, you can cut with ease and enjoy the cutting experience without any negative side effects.

2. Honda Lawn Mower Blade

Honda Lawn Mower Blade

For those who are tired of manually mulching leaves and grass, Honda has the 08720-VH7-000 Mulch Blade Set. This tool allows you to mulch leaves and grass quickly and easily. The blade has been designed by experts who know how to handle high workloads in commercial lawn mowers. They have used their experience to create a blade that is reliable and durable.

The Honda blade is a set of two blades that are also intended for a single model type of the Honda HRX217 lawnmower. If you purchase this blade, it will only work with that particular model and cannot be used with any other variations or models.

Honda's HRX217 lawnmower has very few blade options, so this blade set is a great option in general. It has a great fit and an incredible cutting action thanks to its flat edge and thick metal edges. This is an excellent blade set for the Honda HRX217 model lawnmower, especially since this type of blade doesn't have a lot of options.

3. Ego Power+ Lawn Mower Blade 

EGO Power+ AB2101 21-Inch Lawn Mower High Lift Blade

The Ego Power+ AB2101 is a 21-inch blade that could cut-through grass easily. It has an interesting design that allows it to reach high obstructions. Built specifically for EGO mowers, this blade attaches to your 21-inch mower, giving you a cleaner cut because it lifts from the ground.

To make your lawn mower easier to use, the blades have been pre-sharpened. The blades will give a clean cut with this model -- perfect for smaller yards. Using this trimmer is effortless, as it doesn't require you to sharpen it first, and you'll be mowing and cutting through grass in no time.

With high-lift blades, you can cut the funnel and the clippings will be pushed into bagged bags. They've proven popular with homeowners who don't want to tangle or lose time cleaning up garden clippings with other tools.

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