Oki 520 - Manual (Page 23)

E-16 Section 2
4. Lift the paper separator, open the tractors and remove
the paper.
5. Fold some continuous-feed paper over three times to
make a page four sheets thick and load it on the
tractors. Use the platen knob to draw the sheet around
the platen: this brings any jammed bits of paper out.
6. Back the sheet out.
7. Replace the roller assembly.
8. Reload regular paper.
9. Close the access cover.
10. Turn the printer on.
11. Press the FF/LOAD button.
Clearing Single Sheet Feed Jams
1. Turn the printer off.
2. Rotate the platen knob to back the jammed paper out
of the carriage.
3. If necessary, open the access cover and lift off the
pull-up roller assembly to provide access to remove
any ripped pieces from around the carriage.