Using the DeWalt DCN650B is a breeze. First, make sure your DEWALT 20V MAX* lithium - ion battery is fully charged. Load the 15 - gauge angled finish nails into the magazine, ensuring they're properly aligned. You can choose between sequential or contact actuation modes using the tool - free selectable trigger. Adjust the depth of the nails easily with the tool - free depth adjustment feature for a precise finish. When you're ready to work, just aim at the target area and press the trigger. If you encounter a nail jam, use the tool - free jam release to quickly clear it. As for maintenance, keep the nailer clean after each use. Wipe it down with a dry cloth to remove dust and debris. Check the battery regularly and store it in a cool, dry place. Don't forget to check the chain break for kick - back protection to make sure it's working properly. And always follow safety instructions when using this tool.