Seven-Seuss Style: EC277 Assembly Instructions Carefully unpack all parts and identify them with parts list before attempting to assemble the chair. IMPORTANT: DO NOT TIGHTEN BOLTS AND SCREWS FULLY UNTIL YOU HAVE COMPLETED THE FINAL THE FINAL ASSEMBLY. 1. Put CASTERS (A) into the holes of 5 STAR BASE (B). 2. Insert GAS LIFT (C) to the center hale top of 5 STAR BASE (B). 3. Attach SEAT PLATE (F) to the Unit Seating(G) by using 4 SCREWS (D) with 4 FLAT WASHERS (E). 4.