Kyocera Ecosys FS-C8650DN Operation Manual page 52

Paper Size Guide (B)
4
With the bottom of the cassette pressed all the way down, press the
hook on the side of the Paper Size Guide (B) to release it and pull out
the Paper Size Guide (B).
5
Adjust the Paper Size Guide (B) to the paper size.
A4
Insert the Paper Size Guide (B) into the slot marked A4 (on the
bottom of the cassette), and lock the hook (it will make a "click"
sound).
Gently try moving the Paper Size Guide (B) to verify that it is fixed.
B5
Open the Paper Size Guide (B) as shown, insert into the slot marked
B5 (on the bottom of the cassette), and lock the hook (it will make a
"click" sound).
Gently try moving the Paper Size Guide (B) to verify that it is fixed.
Letter
The Paper Size Guide (B) is not attached.
6
Insert the paper into the cassette.
After removing new paper from its packaging, fan the paper before
loading it in the cassette.
(Refer to Before Loading Paper on page 2-21)
2-26
Preparation before Use