Canon H12157 - Manual (Page 106)

4-12 Paper Handling Chapter 4
Changing a Paper Size from Letter- to A4-
Size Paper in the Paper Cassette
1. Lift the paper cassette slightly and pull it out.
2. Hold the center part of the front paper guide with your finger. Gently
move the front paper guide to the rear of the unit, then the tab of the
paper guide will come out of the slot of the paper cassette.
Place the front paper guide to the suitable area. N