JRC JUE-87 Instruction Manual page 106

Dismounting method
A3.3.3 Printing Pressure Adjustment (Print Paper Thickness Adjustment)
The printing pressure can be adjusted with the head adjustment lever located on right side in the
printer.
For one ply plain paper the position  is most suited. When shipped, this lever is set to this position.
In case of 3 ply duplicating paper, either  or  becomes suitable position.
1) To change the ribbon, at first verify that the
power to printer is turned OFF.
2) In case of paper stand has been mounted,
loosen stand-holding screws, and slide the
paper stand backward.
3) Remove the printer cover.
4) Seize the ribbon cassette knob, rise up
vertically to remove.
A3-6