Steps For How to Clear A Main Sewer Line Clog:
1.Loosen the Drain Pipe Cap (Cleanout Pipe) The first step is to find your main drain cleanout location.
2.Remove Cap, Allow Build-Up to Drain. Once you remove the cleanout cap, step away quickly.
3.Insert the Snake into Pipe.
4.Run the Tool Until Clog Is Gone.
5.Clean Up.