Using the Milwaukee M12 AIRSNAKE is easy. First, make sure the REDLITHIUM Battery Pack is fully charged. Then, place the machine near the clogged drain. Connect the 10 - foot extension if needed. Adjust the variable pressure dial according to the type of pipe system you're working on. Press the start button, and let the powered air do its job. It'll flush out the water and remove grease and sludge. When you're done, turn off the machine and disconnect the extension. As for maintenance, keep the machine clean and dry. Check the battery regularly and charge it when needed. Avoid using the machine in extreme conditions, and don't subject it to rough handling. If you have any problems, refer to the user manual or contact customer support.