Canon Color imageCLASS MF8170c Basic Manual page 139

Remove the jammed paper.
IMPORTANT
If the paper completely winds around the fusing roller and is impossible to be removed,
contact your Canon dealer.
Hold the grip on the fuser unit and install it securely.
9
Lock the fuser unit by turning the two lock release levers in the
direction of the arrow.
Clearing Jams 9-17