Using the Milwaukee 48 - 53 - 2773 drain cable is easy. First, make sure your drain machine is compatible with this cable. Attach the cable to the machine securely. Then, slowly feed the cable into the drain until you reach the blockage. Use the machine to rotate the cable and break up the clog. When you're done, retract the cable carefully. As for maintenance, after each use, clean the cable with a brush to remove any debris. Store it in a dry place to prevent rust. If you notice any signs of damage, check the 2 - year warranty and contact customer service if needed. Also, be careful not to exceed the cable's torque limit to avoid breaking or kinking it.