Changing Bits: 1. Unplug the tool. 2. Turn the knobs on either side of the tool to loosen the base. 3. Remove the base. 4. Press the spindle guide to lock down the shaft. 5. Use a wrench to loosen the collet. 6. Remove the bit and collet. You may have to tap on the collet to loosen; careful not to tap on the cutting edges of the bit. 7. Insert the new bit and collet. 8. Use a wrench to tighten the collet into place. 9. Replace the base.
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Changing Bits: 1. Unplug the tool. 2. Turn the knobs on either side of the tool to loosen the base. 3. Remove the base. 4. Press the spindle guide to lock down the shaft. 5. Use a wrench to loosen the collet. 6. Remove the bit and collet. You may have to tap on the collet to loosen; careful not to tap on the cutting edges of the bit. 7. Insert the new bit and collet. 8. Use a wrench to tighten the collet into place. 9. Replace the base.