Before changing bits and blades on a power tool, make sure to follow these steps:
1. Turn off the power tool and unplug it from the power source.
2. Release any safety locks or mechanisms on the tool.
3. Carefully remove the old bit or blade by following the manufacturer's instructions.
4. Install the new bit or blade securely, ensuring it is properly aligned and tightened.
Remember to always prioritize safety when working with power tools.