Attaching the Upright Support Assembly
to the Base Frame
Because the two uprights are welded together at the factory, they are installed
together.
To attach the upright support assembly to the base frame:
1. Position the upright support assembly so that its screw holes line up with
the holes on the base frame.
Important: The movement arm stops should be on the same side as the flared
legs on the base frame, as shown in the following figure.
Figure 4: Upright support assembly positioning
2. Secure the upright support assembly using four M12 x 35 mm socket head
cap screws and four 13 mm flat washers. Partially tighten the screws.