When and How to Change a Circular Saw Blade?

If your job revolves around the frequent use of a Circular Saw then it wouldn’t come as a surprise if the saw blade is all worn out. No doubt, Circular Saws are one of the vital tools in today’s construction industry. With that said, this tool mainly assists in measuring and cutting lumber or timber.

Circular Saw Blades are heavy-duty and durable, however, with time and constant use, the blades become subject to wear and tear. Therefore, it becomes essential that you ensure your Saw Blades are sharp enough to deliver the quality of work you opt to deliver.

Now speaking of Circular Saw Blades, changing them may seem like one heck of a task, but it isn’t really that difficult. That said, one of the best things about the Circular Saw Blade is that it’s super easy to install.

It only takes a few minutes to replace the Circular Blade with a new one and almost anyone can change it. Ease of maintenance is yet another factor that makes this tool an absolute favourite within workspaces and industry.

Although Circular Blades are made to deliver clear cuts, however, they tend to get dull with the passage of time. Therefore, the maintenance of the Circular Saw becomes of utmost importance, followed by the replacement of the Blade when the need arises.

Failing to replace the Circular Blade not only creates wood splinters but

So, with that said, this article will answer “How to Change a Circular Saw Blade”. And if that not all, we will also help you understand “when” and “How to know if your circular blade needs a change?”.

also diminishes the efficiency and quality of work. If that’s not all, it can also potentially damage or burn the motor of your equipment.

How to Change the Circular Saw Blade?

Initially, the manual instruction that came along with your Circular Saw will prove to be your best guide. However, in case if you’ve lost it or still have trouble installing the blade, then this step by step guide will surely help you.

Step 1: Remove the Plug from Its Power Source

Before you get started, make sure that you’ve unplugged the cord of your Circular Saw from its power source. In case, if your Circular saw is powered by a battery, make sure to remove it before you proceed further.

Always remember to not make any kind of adjustment with the power source still intact. If not careful, it could extremely dangerous and can potentially lead to serious injuries.

After removing the battery or unplugging the cord, allow the remaining power to drain by letting your machine cool off for 10 minutes.

Step 2: Wear Your Protective Gear

Whenever coming in contact with your equipment, always remember to wear your safety gear. Wear your gloves and goggles even if you’ve unplugged the cord.

Protective gear helps you protect from the sharp edges and all the debris and dirt that may enter your eyes.

Step 3: Conduct a Visual Inspection

A detailed inspection helps you determine the root cause that’s affecting the performance of your blade. At times, it’s the built-up dirt that affects the efficiency of your circular blade. While in other cases, it helps pinpoint where the damage has occurred.

If your blade is worn out, missing a tooth, broken, or chipped, then it means the blade is damaged beyond repair. The only solution left is to replace it.

Step 4: Know the Structure and Make of The Saw

Having the knowledge and information about the structure, make, and the kind of your Circular Saw is of utmost importance.

There are many kinds of Circular Saw available out there. So, it’s always best that you know the kind of Saw you’re dealing with. Most Circular Saws have a wrench that is either an Allen type (based on a hole on the arbor nut) or a blade wrench.

Most manufacturers place the wrench on the handle of the Circular Saw. While others place it somewhere within the body of the Saw.

Another piece of crucial information that you should remember is if the structure of your saw is right-handed or left-handed. Also, before you begin the process of removing the blade, remember the direction of the teeth.

Step 5: Remove the Circular Blade

Now, this is the step where you carefully lift the safety guard. Make use of the blade wrench to remove the arbor nut. This will release the blade from its place.

In case, if you can not spot the safety guard, then it’s usually a sheath made of plastic. Lifting the safety guard will expose the blade, letting it easily slide out of its place, letting you replace or remove it.

While removing the blade, always remember to hold it firmly to avoid any accidents.

Step 6: Install the New Blade

Once you’ve successfully removed the old Saw Blade, all there’s left to do is install the new one. Adjust the new blade over the arbor. While doing so, make sure that the teeth of your Saw Blade are facing the right direction.

Remember to place the teeth at a downward angle as the blade would rotate clockwise or refer to the user manual. To assist you with the installation process, most Circular Saws come with an arrow guiding where the teeth should face.

While you install the new Saw Blade, ensure that you don’t overtighten the arbor nut. In case if you overtighten the nut, it will become troublesome for you to loosen it in the future.

Once you’ve slipped in the new blade and tightened it in its place, place the safety guard back in its position. Release the safety lock and check if the blade rotates properly.

When Should You Change the Circular Saw Blade?

If most of your work depends on the Circular Blade, then knowing when to change the Saw Blade becomes no less than crucial.

Your observation is the key that helps indicate if it’s finally the time to replace the old Saw Blade. In case, if you observe chipping, increased kerf tear out, binding, and excessive burning, then these signs should be taken into serious consideration.

The following signs are no less than red flags and should never be ignored. If these signs aren’t addressed on time then it can potentially damage or burn the motor of your Circular Saw.

In case, if you aren’t so sure if you need to replace your old saw with a new one, then we recommend that you conduct a detailed visual inspection. At times, it is just the built-up on the Saw that needs to be cleaned up.

How to Know If It’s Time to Change the Circular Saw Blade?

Here are a few pointers that will help you determine if you need to replace the Saw Blade with a new one.

1. Examine the teeth of the blade carefully. Carefully inspect to see if there’s any pitch built-up on the sides or on the teeth of the blade. If so, then this probably can be the reason for the poor cutting performance of the blade.
2. With the help of a magnifying glass carefully examine the carbide edges. In case, a magnifying glass isn’t available, you can make use of a bright torch. If you have a tipped-carbide then all you need to do is re-tip or sharpen the Saw Blade.


Changing the Circular Saw Blade may initially seem like an intimidating task, especially when you’ve never replaced a Circular blade before. However, it’s definitely not as difficult if you follow our step by step guide that we’ve carefully assembled for you.

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