Secure sofa back (B) to left arm (A1) with 2 washers
(D) and 2 screws (E) by using allen wrench (G). Do
not fully tighen now.
Secure right arm (A2) to assembled sofa back (B)
with 2 washers (D) and 2 screws(E) by using allen
wrench (G). Do not fully tighen now.
STEP 1
STEP 2