Epson LX 300+II Reference Manual page 100

6. Pull the paper set levers all the way forward until the paper
guides retract and lock open to allow for paper loading.
7. Take a stack of paper and fan it. Then tap the side and
bottom of the paper on a flat surface to even up the stack.
Caution:
w
Do not use envelopes, multipart forms, carbon paper, or labels
in the cut-sheet feeder.
8. Insert up to 50 sheets of paper along the left paper guide.
9. Adjust the position of the right paper guide so that it
matches your paper's width. Make sure the position of the
guide allows the paper to move up and down freely.
10. Push the paper set levers back to clamp the paper against the
guide rollers.
11. Remove the paper supports from the edge guides. Insert the
two stacker supports supplied with the cut-sheet feeder into
the holes on the edge guides.
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