Insert top frame (7) and part (8) into side frame (10), then use wrench (D) to secure side
frame (10) to top frame (7) and part (8) with screw (E).
Insert top frame (7) and part (8) into side frame (9), then use wrench (D) to secure side
frame (9) to top frame (7) and part (8) with screw (E).