How do I sew cylindrical pieces or use the free-arm on the XH2177-001?

Slide the flat bed attachment to the left to release it, then slide the cylindrical part you wish to sew onto the arm and sew from the top. When you are finished with free-arm sewing, install the flat bed attachment back in its original position. The accessories are stored in the accessory compartment inside the flat bed attachment. (Page 1)