Attach the Leg (B) to the bottom of Cushion (A), put Washer (E) on the Leg (B) and tighten with Bolts (D). Turn the L-Allen Key (F) to tighten all Bolts tighten Adjustable Feet Pad (C). Remark: please make sure that the metal leg with arrow sticker should be kept in the front side. Take the Allen Key, and turn the bolts until the legs are secure. DO NOT TIGHTEN COMPLETELY. Stop when you feel you are adding force to tighten the bolts. Stand chair up on an even surface and check that iris balanced.