Using the Milwaukee 2746 - 21CT M18 Fuel 18 Gauge Brad Nailer Kit is a breeze. First, charge the REDLITHIUM™ CP 2.0 battery pack with the M18™ & M12™ Multi - Voltage Charger. Once charged, insert the battery into the nailer. You can adjust the drive depth without using any tools, depending on your project needs. There are two firing modes: sequential and contact actuation. Use sequential for more precise nailing and contact actuation for faster work. When you run out of nails, the dry fire lockout will prevent the tool from firing. If a nail gets jammed, use the tool - free jam clearing latch to fix it quickly. Remember, this nailer doesn't need a gas cartridge, which makes it more convenient. Also, make sure to turn off the nailer using the on/off power button when not in use. For maintenance, keep the tool clean and store it in the contractor bag. Check the battery regularly and replace it if it doesn't hold a charge well. And don't forget to check the three interchangeable tips and replace them if they get worn out.