I. Place the backrest with legs on a protected surface. II. Align the seat (#2) to the pre-drilled holes on the back rest with legs (#1). III. Prepare 2 bolt assemblies by FIRST inserting the lock washer (#D) onto the bolt (#C) then the flat washer (#E) onto that SAME bolt (#C), in that order. Secure using the Allen wrench (#F). I. Prepare 4 bolt assemblies by FIRST inserting the lock washer (#D) onto the bolt (#A) then the flat washer (#E) onto that SAME bolt (#A), in that order. II.