Lexmark 4I3 - Manual (Page 49)

2. Align and put the left paper holes of the form over the left
tractor pins. Close the left blue tractor door.
B lu e Tr a c t o r D o o r
3. Move the right tractor until the right paper holes of the form fit
on the right tractor pins. Be sure that the forms are straight.
Tr a c to r P in s
Chapter 1. Setting Up the 4230 Printer 1-27