Signode Little David LD16AE 2.0 Operator's Manual page 68

 Setting tape core drag:
The tape core drag setting is factory set to not allow a full roll of tape to
free wheel as tape is being pulled off it. The drag setting may need to be
adjusted if the tape cartridge is being operated at high speed or if the tape
adhesive is causing the roll to over rotate as the tape it is being pulled of
the roll. Refer to figure 6.
 Setting the knurled tension roller:
The knurled tension roller is factory set to its minimum resistance setting.
This setting works for all standard tape applications. The tension roller
setting may need to be adjusted if a thick mill tape is being used. By
increasing the tension it aids in cutting the tape. To increase the tension
turn the adjustment nut clockwise. To decrease the tension turn the
adjustment nut counterclockwise Refer to figure7.
Figure 7
 Setting main spring tension:
Setting the main spring tension is done by moving the end of the spring to
a different preset position. The main spring tension is factory set to a mid
position. The spring is set from lightest to stoutest dependant on the
strength of the corrugated box and the fill of the contents. Void filled,
weak corrugated boxes would be set to the lightest setting while strong
corrugated box with overfill would process better with the main spring set
Tension roller
adjustor nut