CargoMaster 9040155 Manuel D'instructions page 12

For convenience,
the rack can also be folded vertically when no bicycles are on it. Remove the Hand Wheel Assembly (shown below)
and rotate the rack. Once vertical, re-insert the knob and screw it tightly to secure the position.
Remove the hand
wheel assembly for
rotary folding.
This part is the same as that in
the previous step, and it needs
to be tightened with straps.
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