Xerox Versant 4100 Press Manual page 34

To reduce the likelihood of more than one envelope discharging at once, increase the friction on the
Separator by turning the "DO NOT ADJUST" knob in the center of the feeder counterclockwise. This
will lower the O-rings on the bottom of the Separator Assembly.
Lowering the Separator (increase friction for better separation)
NOTE: If the threaded stud (blue arrow) no
longer turns due to the stop (red arrow), you can
lift the "do not adjust knob" over the stop and
continue turning the knob (see below).
A, B, AND C Models Only
4-14
If you do turn past the stop, be sure to double
check that the separator assembly did not jump
out of the J‐channels in the feeder (see below).
Xerox Customized Envelope Feeder – Problem Solving Guide