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How to Fit A blade onto A Ryobi Left-side Circular Saw

13/02/2026, 13:59
How to Fit a Blade on a Left-Hand Circular Saw 

Safety First 

1. Disconnect the power source 

  • For corded saws: unplug from the mains.
  • For cordless saws: remove the battery pack.

This prevents accidental activation. 

2. Wear eye protection and gloves to avoid injury.
 

Circ saw infographic


 

Step-by-Step Instructions
 

1. Engage the spindle lock

  • Press and hold the spindle lock button (or use the locking mechanism provided) to stop the spindle from turning. 


2. Loosen the blade bolt

  • Use the Allen key supplied with the saw to turn the bolt clockwise to loosen it.


3. Move the lower blade guard out of the way

  • Lift or retract the guard using the retracting handle so you can access the spindle and fit the blade.
  • Keep fingers clear of the blade area at all times. 


4. Remove the outer flange and old blade

  • Take off the outer flange and carefully remove the blade from the spindle. 


5. Fit the new blade

  • Follow the direction-of-cut arrow on the blade housing to ensure the blade teeth point the correct way (towards the front of the saw).
  • Make sure the arbour on the NEW blade is the same size as the spindle (16mm)
  • Place the blade onto the inner flange. CARE: The inner flange must be in-place before the blade. 


6. Replace the outer flange and tighten the bolt 

  • Put the outer flange back in position.
  • Tighten the bolt anti - clockwise using the Allen key while holding the spindle lock. 


7. Release the blade guard 

  • Ensure the guard moves freely and automatically covers the blade. 


Final Checks 

  • Confirm the blade is secure and spins freely without wobble.
  • Reconnect the power only when you are ready to cut.
     Circ saw steps



     

    Circ saw steps


 

 

Applicable Models

R18CS-0, RCS18C, R18CSP0