Lexmark MX511
Order an ADF separator roller when the ADF fails to pick paper or picks more than one sheet of paper at a time.
For information on replacing the ADF separator roller, see the instruction sheet that came with the part.
Separator roller
40X9108
280.13, 281.16, 282.03 Automatic Document Feeder (ADF) scanner jam
283.05 Paper Jam when Using ADF