Oki C9300dn User Manual page 162

Press back the lock lever (1) and, using the handles (2 and 3),
3.
remove the old transfer belt from the printer.
Remove the new transfer belt unit from its packaging.
4.
Using the handles (2 and 3), align the pins (4) with the grooves
5.
(5) on the printer and insert the new transfer belt into the
printer.
Move the lock lever (1) forward and ensure it locks the transfer
6.
belt into place.
Install the four image drums and toner cartridges back into the
7.
printer.
Close the top cover.
8.
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