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PRODUCT SUPPORT

RYOBI Circular Saw not cutting straight

10/06/2026, 16:55

What to Do if Your Circular Saw Is Not Cutting Straight 
 

Safety First 

  • Disconnect the battery/disconnect power cord before making any adjustments. 
  • Wear eye protection and gloves to avoid injury. 
     

Step-by-Step Checks 

  1. Check the blade condition 
    • A dull, damaged, or warped blade can cause wandering cuts. Replace the blade if teeth are worn or the plate is bent. 
       
  2. Verify the blade is fitted correctly 
    • Ensure the blade is seated flat against the inner flange and tightened securely with the supplied Allen key. 
    • Confirm the teeth face the correct direction (follow the arrow on the blade housing). 
       
  3. Inspect the base plate alignment 
    • Make sure the base plate is square to the blade. 
    • Use a carpenter’s square against the blade and base plate. Adjust the bevel setting if necessary. 
       
  4. Check the cutting depth and bevel lock 
    • Loose depth or bevel locks can allow movement during cutting. Tighten both securely before starting. 
       
  5. Use a guide for straight cuts 
    • For long rip cuts, use the edge guide supplied with the saw or clamp a straight edge to the workpiece. 
       
  6. Support the workpiece properly 
    • Sagging panels or uneven support can cause the saw to twist. Ensure the material is clamped and supported on both sides of the cut. 
       
  7. Check your technique 
    • Apply steady forward pressure without forcing the saw. 
    • Keep both hands on the saw and maintain a consistent speed. 
       
  8. Confirm the application is within the saw’s specifications 
    • Cutting material thicker than the maximum depth or using the wrong blade type can cause deflection. Refer to the manual for correct specs.
       
Applicable Models

R18CS-0, RCS18X, RCS1500-G, R18CSP0, RCS18X1, RCS18C, RPLS18X