Canon BJC-8500 - Manual (Page 149)

5 If the paper rest is up, push it down.
6 Remove the paper output receiver.
7 Remove the standard and optional paper cassettes.
8 On both sides of the printer, push the locks back to unlock them.
9
With two people on either side of the printer, raise the printer straight
up to separate it from the optional paper cassette base.
10 Set the printer down on a stable, flat surface.
11 If you are transporting the printer, pack the printer and cassettes in the
original packing you saved when you set up the printer.
144 Canon BJC-8500 User’s Manual