Canon oce 31x5e Daily Maintenance page 85

Slide several sheets of paper into the stapling slot, as shown below.
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[57] Manual stapling
This causes the strip of staples to move a bit towards the mouth of the stapler.
Repeat the manual stapling 4 to 6 times, until a staple is inserted in the set of
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paper. The stapler is now ready for operation.
Maintenance 85