Put the seat (A) on a smooth flat surface, attached one front leg (B) to the seat (A) use bolt (G}, lock washer (E) and flat washer (F} on both of hole of seat. Tums the Allen wrench (H} in bolt (G). But not too tight. Attached left back leg (C) and right back leg (D) to the seat (A) use bolt (G), lock washer (E) and flat washer (F) on both of hole of seat. Turn the Allen wrench (H) in bolt (G). But not too tight. Stand chair up on an even surface and check that it is balanced.