step 07:
13
(Part O)×8
M6*35mm screw
B2
B2
B2
C
C
O
(Part R)×1
allen wrench
Do not completely tighten screws until all screws are in place.
1. Attach 4 of the top bars (C) to both connector bar2 (B2),
secure with M6*35 mm screws (O) using the allen wrench (R).