unknown

asked Aug 12, 2012 at 3:52pm
Hp HP LaserJet 4

HP Officejet Pro Printer L7555 4-in printer

While clearing a paper jam, I removed the top feeder cover and now I can not replace the blue part that supposedly helps feed the paper as it goes through the rollers. It is a very small part that appears to swivel as paper goes through, I replace it by snapping it into place but it falls off again. The part does not appear to be broken or cracked.

help anyone?