Great Plains YP825A Operator Manual - Manual (Page 168)

164 YP425A, YP625A and YP825A Table of Contents Index Great Plains Manufacturing, Inc.
401-651M Table of Contents Index 2014-08-15
Initial Marker Setup (Option)
Marker Speed Adjustment
Overhead Sharp Object and Crushing Hazards:
Never allow anyone near the planter when folding or
unfolding the markers. You may be injured if hit by a folding or
unfolding marker. Markers may fall quickly and unexpectedly
if the hydraulics fail. Marker discs may be sharp.
Refer to Figure 149 and Figure 150
Adjust folding speed for dual markers with hex
adjustment screws on the sequence valve body. The
valve sequence body is top center of main tool bar.
Loosen jam nuts before making adjustments.
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 (S: slower) to
decrease folding speed and counterclockwise (F: faster)
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.
Figure 149
Marker Sequence Valve Location
31007
1
2
Figure 150
Marker Speed Adjustment
14048
F
S
S
1
2
U
D
B
F
R
L