Lexmark C910 - Page 107

General Information 1-91
5055-01X
If you previously lowered or raised the guide rail plate, the
thumbscrews are already loose.
2. Rotate the rear adjustment knobs to equally align the top and
bottom of the finisher with the printer.
To move the top of the finisher closer to the printer, rotate the
adjustment knobs clockwise.
To move the top of the finisher away from the printer, rotate the
adjustment knobs counterclockwise.