ASSEMBLY STEP 4: Add foam pad to the hook foot tube with armrest. (Similar as Step 3)
Insert the protective foam pads (7) from the ends of hook-foot tube (5).
ASSEMBLY STEP 5: Assemble hook-foot tube and hook-foot frame
Attach the assembled (6) hook foot tube to (5) hook foot frame, and tighten with (A) circular spring pull pin.
ASSEMBLY STEP 6: Install hook-foot tube and armrest
Align the assembled (5) hook foot tube with the holes of the assembled (4) armrest, attach them with (C) Socket
Cap Screws M10*80, and put (E) Washer M10, then tighten with (F) Steel ball bolts. Lastly adjust the angels of the
(5) hook foot tube according to personal preference, and fix it with (F) Steel ball bolts.