How do I install the oil bottle and fuser cleaner in the HL-3450CN?

Open the top cover, release the oil bottle lock levers and fuser cleaner lock levers, and move the fusing unit pressure release levers to the SET position. Install the oil bottle in the fusing unit with the label side facing you, lock both oil bottle lock levers, then insert the fuser cleaner into the fusing unit with the roller side facing you. Lock both fuser cleaner lock levers to complete the installation. (Page 1)