Using the Makita WT05Z Impact Wrench is easy. First, make sure you have a compatible 12V max CXT Lithium - Ion battery (sold separately) and insert it into the tool. Select the appropriate speed setting based on your fastening task. For normal jobs, the lower speed might be enough, but for tougher ones, switch to the higher speed. When loosening a fastener, the reverse rotation auto - stop mode will help you. Just turn it on and it'll stop when the fastener is loose. The built - in LED light can be used to illuminate dark work areas. Remember to wear safety goggles and gloves when using the tool. When not in use, store it in a dry place. To keep the tool in good condition, clean it regularly with a dry cloth. Don't use harsh chemicals. Check the battery regularly for signs of damage or over - heating. If you notice any issues with the tool, stop using it and contact Makita customer service.