Genicom 38 Serie Guide De Référence Rapide page 12

Move the home position tractor as necessary to align the paper.
Move the far tractor as necessary to fit your paper.
Put paper in the far tractor and close the door.
Quick Reference Guide
If necessary, position the home-position tractor so that the edge
of the paper aligns with the "0" on the paper scale. Pull the
home-position tractor locking lever forward and adjust the tractor
postion.
Locking
Home-Position
Lever
Tractor
Rear View
If necessary, pull the far tractor locking lever forward and adjust
the far tractor's position so that it matches the width of the paper.
Make sure the leading edge of the paper is parallel with the
tractor shafts. Sprocket-feed holes in the paper should engage
three to five of the pins of the tractor belt. Make sure that the
same number of pins are engaged on both tractors. For the rear
path, the side of the paper to be printed on faces down.
Feed Pins
Feed Holes
Rear View
Paper Scale
11
Paper Scale
GEK-89604