What should I do before washing my very first load of laundry in this machine?

Before your first load of laundry, run a Drum Clean cycle with no laundry to clean the system, as the washer was tested at the factory and may have residual water in the tub and drainage system. First add 1 to 2 tablespoons of detergent to the main-wash chamber II, then run the Drum Clean cycle and wait for it to finish. (Page 24)