Great Plains 1625AHL Operator Manual - Manual (Page 72)

68 1625AH Table of Contents Index Great Plains Manufacturing, Inc.
411-020M Table of Contents Index 2014-04-21
Marker Adjustments
See also:
“Marker Extension” on page 161 and,
“Marker Maintenance” on page 116.
Pinch, Crush and Sharp Object Hazards:
Never allow anyone near the planter when folding or
unfolding the markers. You may be injured if caught or struck
by a folding or unfolding marker. Markers may fall quickly and
unexpectedly if the hydraulics fail.
Dual Marker Speed Adjustment
Refer to Figure 53
Adjust folding speed for dual markers with hex
adjustment screws on sequence valve body. There is an
adjustment screw for raising speed
and one for
lowering speed . You can identify adjustment screws
by markings stamped in the valve body.
Turn adjustment screws clockwise to decrease folding
speed and counterclockwise to increase folding speed.
With tractor idling at normal operating speed, adjust
marker folding to a safe speed. Excessive folding speed
could damage markers and void the warranty.
After adjusting folding speed, tighten jam nuts on hex
adjustment screws to hold settings.
Marker Disk Adjustment
Sharp Object Hazard:
Use caution when making adjustments in this area. Marker
disks may be sharp.
Refer to Figure 54
To change angle of cut, and the width of the mark, loosen
1 ⁄
2
-inch bolts holding disk assembly.
For a wider mark (W), increase the angle of the marker
with respect to the tube
. For a narrower mark (N),
reduce the angle.
You can also invert the disk blade on the hub to change
the direction of throw.
Tighten bolts .
Note: The direction of travel (T) tends to drive the disk
angle to Wide. If bolts are not tight enough, or
loosen over time, the disk will slip into the Wide
mark configuration.
Figure 53
Marker Extension Adjustment
14048
F
S
S
1
2
1
2
Figure 54
Marker Disk Angle
11757
N
W
T 4
6
6
4
6