Great Plains 3S-5000HDF Assembly Instructions - Manual (Page 20)

20 Great Plains Manufacturing, Inc. Front Page Appendix 3S-5000/F/HD/HDF Markers
113-890M Front Page Appendix 2013-04-09
Adjust Marker Speed
Dual Marker Speed Adjustment
Refer to Figure 33
Adjust folding speed for dual markers with hex
adjustment screws on the sequence-valve body. There is
one adjustment screw for raising speed
and one for
lowering speed . You can identify adjustment screws
by markings stamped in valve body.
Turn adjustment screws clockwise to decrease folding
speed and counterclockwise to increase folding speed.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed. Excessive folding speed
could damage markers and void the warranty.
After adjusting the folding speed, tighten jam nuts on hex
adjustment screws to hold settings.
Close-Out
Re-fold drill as desired.
Figure 33
Dual Markers Speed Adjustment
14048
Hex Adjustment
Screws
1
2