Oki C3520 - Manual (Page 100)

Maintenance > 100
7. Remove the new fuser from its packaging and remove the
transit material.
8. Holding the new fuser by its handle, make sure that it is
the correct way round. The retaining levers (2) should be
fully upright, and the locating lugs (3) should be towards
you. There is one locating lug at each end of the fuser.
9. Holding the fuser by its handle, lower it into the printer,
locating the two lugs into their slots in the metal partition
which separates the fuser area from the image drums.
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