How to Sharpen Lawn Mower Blades Without Removing

How to Sharpen Lawn Mower Blades

How to Sharpen Lawn Mower Blades: After using a mower blade, there is always a needing for a lawn mower to do. It is none other than sharpening the blades of a mower, an operation that despite popular belief, should be performed by a specialized professional. Well, although it is a task to be carried out by an official service workshop, you may be interested in knowing what the procedure of doing it is. You may want to see how the cutting equipment is disassembled or what to do when it is damaged. If so, we recommend that you continue reading.

How to Sharpen Lawn Mower Blades Without Removing

Lawnmower blades are widely used nowadays. It is becoming more and more popular day by day. Hence, as the usage of this product is increasing, it is necessary to know the essential things about it. Hence, In this new chapter, we will try to answer one of the most recurring questions from users or owners of a mower: How to Sharpen Lawn Mower Blades?

Maintaining a Lawn Mower: The Cutting Equipment

Before starting to analyze the steps and aspects that must be carried out in the maintenance of the mower’s cutting blades, it is essential to mention that the sharpening of the leaves.

As mentioned in the introductory paragraph of this article, It must be carried out by a specialized professional from one of the official workshops. The reasons? They can be summed up in two: user safety and the necessary tools.

Although you should not do the sharpening, you can disassemble the equipment to take it to the workshop. So, you will not have to transport the whole mower and reassemble it.

But, if you decided that you will do this work and sharpen your lawn mower blade on your own, then we are here to help you out. It is an astringent procedure, but a straight forward one. You have to concentrate on learning this procedure.

Therefore, we will explain how to do this process without posing a risk to you. So, let’s start:

Dismantling of the blades

When you notice that your mower blades are in bad condition, damaged or cut poorly, perhaps it is time to go to an official workshop. Carrying the machine can cause a headache or space problems in the car. For this reason, we will explain step by step how to disassemble them.

The first thing to do is to prevent the mower from starting accidentally, so it is best to remove the ignition cable and, if applicable, the safety/battery start switch. Another recommendation is that you block the blade with, for example, a wooden block.

Then loosen the blade bolt and remove it. Do the same with the washers. Remove the blade screw by turning it counterclockwise.

In this procedure, you will be able to do it entirely. But, most importantly, you have to make sure that you are doing it in the right way. Therefore, before starting to do it, concentrate on it hard and then step onto it. Remember, one single wrong step can ruin everything.

Moreover, you can also use some safety guards for your safety purpose. What it will do is, it will ensure your concentration is on that specific work and you are not hesitating to do it.

Sharpening the blades: The process performed by a professional

It is the turn of the professionals. When you take the cutting blade to the official workshop, it is the operators who carry out the replacement and sharpening of this cutting equipment.

To do this, you need to capture some essential steps into your mind. You have to learn those things correctly before trying to do this. We will explain some necessary things to know to do this correctly. Learn them perfectly and then jump into your work.

The blade of a mower can be sharpened in two different ways:

  1. Sharpening the blade by hand:

In this case, you need a worktable with a built-in clamp. Professionals use these clamps to hold the blade and sharpen its edges with a metal file. Both the inner and outer edges are sharpened until the corner has a clean, shiny appearance. The angle of the slope is followed while grinding the cutting equipment (the aspect is usually 40º or 45º).

Remember, you have to be very careful in trying to do that. Place your hands entirely into it; don’t try to do anything silly and try to follow the guide as stated.

  1. Sharpening the blade with a machine:

The operation becomes more complicated. Adequate safety protection is required for work (gloves, glasses, etc.). For grinding the blades use for example grinders or belt sanders.

Sharpening a blade by a machine can be a hard procedure. It can take a lot of time too. Firstly, you have to ensure that you are using those safety protectors for your safety concerns. Then, try to follow the guide to do it.

Cutting equipment assembly

Once sharpened, the blades must be reassembled. Assembling the cutting equipment of a mower is different from disassembling.

The blades must first be mounted with the ends at an angle, that is, facing the cover. Then place the cutter with the friction washer against the cutter holder. You must make sure that it is correctly centred with the axis.

Again, block the cutting equipment with a wooden block. Assemble the washer and tighten the bolt by turning it clockwise (tighten it to a torque of 70Nm).

Finally, you have to check that the blade moves in different directions and that it rotates freely. If you find anything wrong, then try to check it from top to bottom to recheck it and the procedure of doing it.

You have to make sure that you are wearing those safety guards ion every step. Because safety comes first. And then, if you see everything is alright, simply rectify the blade and again and complete the sharpening.


Lawnmower blades are widely used nowadays. As a user, if you use it for a long time, then you may need to sharpen the blade of it. For that, you need to learn the perfect way to do it, and this guide can help you in this aspect.

So, that’s all on How to Sharpen Lawn Mower Blade. Hopefully, it will help you in your cause if you follow the guide in order.

Add a Comment

Your email address will not be published. Required fields are marked *