Xerox 4050 Maintenance Manual page 32

Fuser lubricant and pressure roll wiper
4-4
7. Open a tube of fuser lubricant and cut the pointed spout
diagonally. Carefully squeeze the lubricant into the reservoir
until the orange float reaches the top (C), or until you see the
oil reach the top edge below the fuser cap. The reservoir may
require up to two tubes of lubricant if it was empty.
C
8. Replace the reservoir cap by turning it clockwise.
9. Close the fuser drawer by pressing down on the green latch
(A) and pushing the fuser drawer in until it latches in place.
Guide to Performing Routine Maintenance