How To Change Circular Saw Blade [Step By Step Guide) Updated 2021

A circular saw is an excellent power saw until its blade gets dull. A dull circular saw blade would result in somewhat rough cuts and cause wood splinters. Also, it is not safe to work with a dull blade since it may cause you injuries.

With all these being said, you must know how to change a circular saw blade when it needs replacement. It will help you achieve smooth cuts with proper safety requirements.

So, without delaying the circular saw blade change further, let’s dive deep into the tutorial.

Circular Saw

How to Change Circular Saw Blade

You will see the use of a circular saw, mostly in the construction industry. Although its blade is made with highly durable materials, it eventually wears out due to continuous working pressure with hard materials.

Hence, the following technique for changing the circular saw blade will be beneficial for you.

[1] When you work with any power tool, you must be aware of the safety requirements of it. Hence, we recommend you to unplug the circular saw from the power outlet. It will help you work with safety and comfort.

[2]When you want to remove the circular saw blade, always position the saw on a flat surface. When you work on a flat surface, it prevents wobbling and makes your saw blade changing a brisk task.

[3] The saw will lock the blade with the arbor-lock system. Press the red button-down and ensure the arbor-lock system is turned on. It will stop the circular saw blade’s rotation and ensure you don’t get cuts or scratches from the blade movement while working with it for replacement. Also, a steady edge with a locked system is easy to remove.

[4] Now, you will need a wrench set to remove the nut from the arbor at first. When you have removed the arbor nut, carefully remove the safety guard of the circular saw. The safety guard bar is nothing except a plastic sheath. It covers the blade when not at work to prevent accidental cuts.

[5] Life the sheath or blade guard and slide it out from the circular saw. It will expose the blade for quick removal or replacement. You may use a socket wrench and use it in the clockwise direction to remove the arbor nut to remove the blade guard.

[6] After you have removed the upper blade guard too, remove the old blade from the circular saw. Inspect it if you can sharpen it with a Dremel or so worn out that it isn’t usable for further cuts.

[7] If you really find the old blade too much damaged, it is time to replace it with a new one.

[8] Slide in the new circular saw blade into the arbor section. Make sure that the teeth direction of the blade faces the rotation. However, if you are unsure about the blade teeth direction, follow the arrow sign on the blade guard.

[9] Since the blade will operate in a clockwise direction, you need to ensure that the newly installed saw blade cuts downwards with the direction. So, install the edge in such a way that its teeth face an angled downwards direction.

[10] Alternatively, you can check the saw casing label to know where the teeth should face for the circular saw blade.

[11] When the blade is in the right position in the arbor system, you need to lock it. Use the socket wrench again to screw the nut tightly, so it closes the blade safely. You should fasten the arbor nut until it fits snugly into the locking position.

[12] Once you feel the circular saw blade is adequately tightened, slide in the blade guard into its position.

[13] Some circular saw may have a diamond-shaped arbor system. If it is the case, straddle the blade using two woodblocks. Then use a hammer to remove the blade from the arbor securely.

When you have changed the circular saw blade, you may press the arbor button to release the lock system and allow the blade to rotate.

Why Should You Change the Circular Saw Blade

A circular saw blade is designed to work with hard materials to provide you smooth cuts. When its edges wear out, the cuts will become rough. Also, a blade with dull edges will result in a lot of wood or metal splinters, which makes the entire workplace messy.

Furthermore, working with a dull circular saw blade is like inviting injuries to hurt you. When you replace a flat blade with a new one, you can avoid all of these unwanted happenings and enjoy better, quicker, and smoother cuts.


The process of how to change a circular saw blade isn’t rocket science. You will require only a couple of minutes to get the replacement done. However, always wear gloves when you change the blade.  It will protect your hands from minor scratches and cuts.

Also, first, check if you can sharpen the blade somehow, which is cost-effective too.

Leave a Comment

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

Scroll to Top