1. Prepare 4 bolt assemblies by first inserting a lock washer (#B) onto the bolt (#D) then a flat washer (#C) onto that same bolt (#D). 2. Insert the front legs (#2) into the slots along the front of the seat cushion (#1), then insert the bolt assemblies from within and secure. 2. Insert the rear legs (#3,4) into the slots along the back of the seat cushion (#1), then insert the bolt assemblies from within and secure.