How to change cutting bit on the Ryobi Dry wall cutter?

• Remove the battery before making any adjustments or installing accessories to prevent accidental start-up.

The tool supports two collet sizes:

• 3.2 mm (1/8") (this is installed in the tool by default)
• 6.35 mm (1/4")

1. Locate the Collet Wrench
   The wrench is located on the back of the depth guide.
   • Lift the tool‑free depth adjustment lever, slide the depth guide out, and remove the wrench from the back of the guide. 
2. Opening the Spindle Lock
   • Press the spindle lock (the light grey button on the side of the tool) and use the wrench to loosen the collet nut by turning it anti‑clockwise. 
   • Once the collet nut is loosened (full removal is not required), insert the appropriate rotary cutting bit.
   • Tighten the collet nut securely by turning it clockwise with the wrench while holding the spindle lock.
3. Reinstall the Depth Guide & Set the Cutting Depth
   • Open the tool‑free depth adjustment lever and reinstall the depth guide.
   • Adjust the guide so the tip of the cutting bit protrudes slightly beyond the thickness of the plasterboard (or plywood).
   • Lock the tool‑free depth lever firmly.