If you want to crease the paper of 351 g/m2 / 94 lb Bond or more using Trimmer Unit TU-510, reposition the adjustment bracket of Creaser Unit CR-102.
When removing, hold the black handles and lift the unit in the direction of the arrow as shown in the figure.
Put the removed Creaser Unit CR-102 on a stable table.
Move the adjustment brackets to the position at which you can see the "2*" and "2)" marks.
If the paper weight is below 350 g/m2 / 93 lb Bond, return the adjustment brackets to the position at which you can see the "1*" and "1)" marks.