Great Plains 2025P Operator Manual - Manual (Page 31)

8/14/2006 118-928M
29 Adjustments
NOTE: The factory setting on the press wheel
is staggered to achieve optimum residue flow.
Refer to Figure 27
If you want to adjust press wheels from staggered
to even, remove 5/8 inch bolt (1), lock washer (2)
and nut (3). Reinstall spacer (4), press wheel (5)
and hardware to the other hole location.
25 Series Openers
IMPORTANT: Do not back up with openers in
the ground. To do so will cause severe dam-
age and opener plugging.
Opener Down Pressure
Refer to Figure 28
Opener springs provide the down pressure nec-
essary for opener disks to open a seed trench.
The springs allow the openers to float down into
depressions and up over obstructions.
You can adjust down pressure individually for
each opener. This is useful for penetrating hard
soil and planting in tire tracks. For best results al-
ways adjust tractor tires so they are not ahead of
30” rows.
Use only enough down pressure to cut the seed
trench and maintain proper soil-firming over seed.
Excessive opener down force will lead to prema-
ture wear opener components. Excessive down
force will also cause uneven seed depth.
Refer to Figure 29
To adjust down pressure, use adjustment wrench
stored under the walkboard or a 1 1/8” open end
wrench. Position wrench on the nut and pull down.
Move the adjustment cam to the new setting.
Figure 27
Press Wheel Stagger
18410
Hole
locations
Opener spring
Figure 29
Opener Down Pressure Adjustment
21948
Figure 28
25 Series Opener Springs
21947