Canon CLC5151 Reference Manual page 365

6
Gently push the staple case into the stapler unit, until it is securely in
place.
7
Close the front cover of the finisher.
The Optional Saddle Finisher-W2
CAUTION
When closing the front cover of the finisher, be careful not to get your fingers caught,
as this may result in personal injury.
NOTE
If there are no staples ready for stapling after the cover is closed, the stapler unit automatically
performs a "dry" stapling operation to reposition the staples.
The Optional Finisher-W1
Finisher-W1/Saddle Finisher-W2/Puncher Unit-AG1 (Optional)
7
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