How to Change Blades on a Circular Saw?

How to Change Blades on a Circular Saw?

Changing the blade on a circular saw is a relatively simple process, but it’s important to follow the manufacturer’s instructions and safety precautions to ensure that you do it safely. Here’s a general guide on how to change the blade on a circular saw:

Materials and Tools Needed:

  1. • New circular saw blade
  2. • Wrench or blade-changing tool (usually provided with the saw) 
  3. • Safety gloves 
  4. • Safety goggles
  5. • Work bench or stable surface
how to change blades on a circular saw


1. Safety First:

• Put on safety goggles and safety gloves to protect your eyes and hands.

2. Disconnect the Power:

•Make sure the circular saw is unplugged or the battery is removed if it’s a cordless model. This prevents accidental activation while you’re working on the blade.

3. Secure the Saw:

•Place the circular saw on a stable workbench or surface with the blade facing up.

4. Locate the Blade Lock:

•Many circular saws have a blade lock feature that helps you secure the blade while changing it. Look for a button or lever near the blade guard that’s labeled as the “blade lock.”

5. Engage the Blade Lock:

•Depress the blade lock button or lever to engage the lock. This will hold the blade in place and prevent it from moving when you loosen the blade nut.

6. Loosen the Blade Nut:

•While holding the blade lock, use a wrench or the provided blade-changing tool to loosen the blade nut in the center of the blade. Turn the nut counterclockwise (opposite to the direction the blade spins) to loosen it.

7. Remove the Blade Nut and Outer Washer:

•Once the nut is loose, carefully remove it along with the outer washer from the arbor (the shaft that holds the blade).

8. Remove the Old Blade:

•Slide the old blade off the arbor, taking note of its orientation so you can install the new blade the same way.

how to change blades on a circular saw1

9. Install the New Blade:

•Slide the new blade onto the arbor, aligning it with the same orientation as the old blade. 

10. Replace the Outer Washer and Blade Nut:

•Place the outer washer back onto the arbor, followed by the blade nut.

11. Tighten the Blade Nut:

•Hold the blade lock again and use the wrench or blade-changing tool to tighten the blade nut. Turn the nut clockwise this time to secure it. Make sure it’s tightened securely, but be careful not to overtighten.

12. Disengage the Blade Lock:

•Release the blade lock button or lever.

13. Double-Check Everything:

•Ensure that the blade is properly installed, the nut is tightened, and the blade guard is in its correct position.

14. Test the Saw:

•Plug in the saw or insert the battery, and turn it on briefly to ensure that the blade spins smoothly and there’s no unusual noise or vibration.

15. Final Safety Check:

•Make sure the area is clear of any tools or obstructions before you make your first cut with the new blade.

Changing the blade of the circular saw is a basic work, and it can be used in different kind of woodworking machines,like sliding table saw/panel saw, band saw …… And if you have any questions abou ‘How do you change the blade on a circular saw?’ or’How to change a saw blade on a circular saw?’ just feel free to contact us.