Epson 4500 - Manual (Page 29)

Assembling the Printer
After you’ve decided on the best place to set up your printer, the next
step is to install the platen knob.
WARNING:
Be sure to remove the locking clip as described in
Installing the Platen Knob
The platen knob is used to feed the paper manually in the event of a
paper jam or other paper feeding problem. The platen knob is packed
in an indentation in the printer’s white foam packing material.
1. Insert the knob into the hole on the printer’s side and rotate it
slowly until it slips onto the shaft.
Setting Up the Printer 1-7