Great Plains 3PYP Operator Manual - Manual (Page 80)

76 3PYP Table of Contents Index Great Plains Manufacturing, Inc.
401-312M Table of Contents Index 2014-09-09
Sprocket Indexing (Stagger)
(Applies to both ground and hydraulic drive)
If you are planting:
• finger-metered,
• twin-row crops,
• at seed interval spacings above 6
1 ⁄
2
inches,
you can synchronize each pair of adjacent meters in a
twin row so that you achieve the maximum seed-to-seed
spacing between the units of the pair.
Refer to the Seed Rate manual for details.
Seed Firmer Adjustments
25 Series row units include a standard seed flap, and
accept one of two optional seed firmers.
Keeton
®
Seed Firmer Adjustment
The optional Keeton
®
Seed Firmer is an engineered
polymer shape that slides down the seed furrow. It traps
seeds as they exit the seed tube and firms them into the
bottom of the “V”.
Refer to Figure 95
The firmer is provided with a preset tension which is
recommended for using the first year. The tension
screw
can be tightened in subsequent years
according to your needs. Firmers should provide just
enough tension to push seeds to the bottom of the
trench.
Measure the distance from the ground to the head of the
tension screw. This distance should be 4 to 4
1 ⁄
2
inches If
not, loosen the bolts in the mounting bracket and select
different holes until the proper measurement is attained.
Seed-Lok
®
Seed Firmer Lock-Up
Optional Seed-Lok
®
firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky
conditions the wheels may accumulate soil. To avoid
associated problems, you can lock-up the firmers.
28420
s
Sharp Object Hazard:
Row unit disk blades may be sharp. Use caution when making
adjustments in this area. To adjust the Keeton
®
seed firmer,
lower the planter until the disks of the row units are resting on
the ground.
Figure 95
Keeton
®
Seed Firmer
20327
s