Epson FX-2190 Reference Manual page 32

This section provides instructions on "Installing the tractor in the
rear push position" on page 26, "Loading paper with the rear push
tractor" on page 27, and "Removing the tractor from the rear push
position" on page 31.
Note:
Thick paper, such as continuous paper with labels or multipart forms
with five or six parts, requires a relatively straight paper path to avoid
paper jams. When printing on thick continuous paper, use the tractor in
the front push position or the pull position.
Installing the tractor in the rear push position
Before installing the tractor in the rear push position, remove it
from its current position. If the tractor is in the front push position,
remove it by pressing the tractor's lock tabs while lifting it out. If
the tractor is in the pull position, remove it as described in
"Removing the tractor from the pull position" on page 42.
1. Make sure the printer is turned off. Then open the paper guide
cover by pulling its back edge forward.
2. Lift the paper guide up and off the printer.
26 Paper Handling