1.
Lay down the left arm(4) on a soft surface, Attach the seat (5) to
the left arm(4) using M6X18 bolts (A) and M6 washers(C), Use the
hex wrench(E) to loosely tighten all the bolts.
Inserting the support tube (2) to the left arm(4) as shown bellow.
Do not fully tighten all the bolts!
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