Sides of copies are cut off, and are only 5.5 inches wide

adjust the paper size

The answer given does not explain enough. The paper feed tray, when inserted and in place and is set for 8 !/2 by 11 paper has an adjustment for paper size. You can slide it over for smaller width paper. That part that slides rests against a tab in the back that senses the position of the paper size adjustment slider. Pull the paper tray out and latch onto that tab and pull it up. You should hear a click. Put the paper tray back into place and you should get the full wide copied. I could find nothing on this in the owner's manual.