Canon imageRUNNER ADVANCE C5560i III User Manual page 1197

7
Install the (two) staple cartridges to the saddle stitcher unit.
● Push them in as far as they will go.
8
Push in the saddle stitcher unit, and close the front cover of the finisher.
● If stapling dose not work after staples are replenished, perform staple repositioning manually.
Stitch Staple Repositioning>(P. 1072)
Maintenance
1183
<Saddle