IBM 3 User Manual page 247

a. Grip both sides of the round tractor shaft while operating the tractor
release levers as shown. Lift the tractor out of the printer.
b. Place the tractor face down on a flat surface with the electrical connector
tab on the right side, pointing toward you.
c. Pull the bottom release levers toward you with your finger tips and pull
the movable edge of the tractor up away from the flat surface with your
thumbs (1) until the tractor locks in the angled position (2).
Continue with step 5 on page 239.
d. Open the front tractor cover to its locked position.
Chapter 17. Setting Up Forms Paths
237