1. Prepare 2 bolt assemblies by first inserting a lock washer (#D) onto the bolt (#B) then a flat washer (#E) onto that same bolt (#B). 2. Place the backrest (#1) onto a protected surface, then align the seat (#2). Insert the bolt assemblies into the center holes and secure using the Allen wrench (#F). 1. Prepare 4 bolt assemblies by first inserting a lock washer (#D) onto the bolt (#A) then a flat washer (#E) onto that same bolt (#A). 2.