HOMCOM A90-105 Assembly Instructions Manual page 10

Installation diagram
Step 8: install the horizontal bar
1) put the horizontal bar on the upper arm, hole
alignment with a semicircle head M8*90 screw from
bottom through, tighten with M8 nuts
step 9: install the vice pipe, adjust the height
suitable for their own
1) directly from the top of the main frame through the
vice pipe, adjust to the appropriate height, the hole
alignment
2) tighten M8*45 plastic handle screw through the
plastic handle nut of M8 in the main frame
and auxiliary pipe