Great Plains YP3025 Operator Manual - Manual (Page 59)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 55
2013-09-09 Table of Contents Index 401-703M
Marker Adjustments
There are six adjustments for markers, only one of which
is routine:
• Disk Angle (covered in this section)
Even if your row spacing rarely changes, you may
need to adjust disk angle for soil conditions and plant-
ing speed.
• Shear Bolt Replacement (“Maintenance”, page 92)
If a marker hangs up on an obstruction, a bolt at the
fold is designed to fail.
• Marker Cylinder Bleed (“Maintenance”, page 91)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Extension (“Initial and Option Setup”,
page 167)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Speed (“Initial and Option Setup”,
page 165)
Once initially set by your dealer, this rarely needs modification.
Marker Disk Adjustment
Sharp Object Hazard:
Marker disks may be sharp. Use caution when making adjust-
ments in this area.
Refer to Figure 58
1.
To change angle of cut, and the width of the mark,
loosen
1 ⁄
2
-inch bolts holding the disk assembly.
For a wider mark , increase the angle of the
marker with respect to the tube . For a narrower
mark , reduce the angle.
Note: Do not set a marker angle wider than need to make
a useful mark. Excess angle increases wear on all
marker components.
2. Tighten bolts .
Note: The direction of travel tends to drive the disk an-
gle to Wide. If bolts are not tight enough, or loosen
over time, the disk will slip into the Wide mark con-
figuration.
Sharp Overhead Object Hazard:
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics
fail. Never allow anyone near the planter when folding or
unfolding the markers.
Figure 58
Marker Disk Angle
11757
T
2
1
N
W T
2
W
1
N
2
T