HP Color LaserJet 9500 Printer series - Manual (Page 202)

http://www.hp.com/support/lj9500
200 Chapter 7 – Supplies Rev. 1.0
7 Remove the new fuser from its packaging.
8 Align the fuser with the black guide-rails inside the printer. Pushing against
both ends of the fuser, slide it completely into the printer. Rotate the blue
levers outward until they click into place.
9 If one was previously installed, slide the optional duplexer into the printer
until it clicks into place.
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