Star LC-4511 Instruction Manual page 22

14 Printer Setup
Close the tractor covers. At this point you can make final adjustments to the
paper position by releasing the gray levers and moving the tractors. The
paper should lie flat with no buckling or bulging (tractors too close) or no
stretching or elongation of the holes (tractors too far apart). After making
these adjustments, be sure that you re-lock the tractors by pushing the gray
levers back into their original positions.
Before printing, make sure that the leading edge of the fanfold paper
extends about 0.8 inch (two centimeters) past the front the paper chute, as
shown in the illustration below.
Close the rear cover and press down gently on it until it locks into place
with a click.
Caution!
Since printing with an open rear cover may cause paper feeding problems, be
sure to close the rear cover before printing.