Using the Milwaukee 2552 - 22 M12 FUEL Stubby 1/4 Impact Wrench is easy. First, charge the included M12 batteries using the provided charger. Once charged, insert a battery into the impact wrench. To use it, select the appropriate mode on the 4 - Mode Drive Control according to your task. For precise work, choose the 1 - 3 RPM setting. When reassembling, the Auto - Shut Off Mode in the 4th setting will help you avoid over - tightening bolts. When using it in tight spaces, take advantage of its compact 5.1 - inch length. As for maintenance, keep the tool clean and dry. After use, store it in a cool, dry place. Regularly check the batteries for any signs of damage or wear. If you notice any issues with the tool's performance, stop using it and have it inspected by a professional.