Great Plains NTA2007 Operator Manual - Manual (Page 101)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 97
2012-01-05 Table of Contents Index 166-372M
Seed Firmer Adjustments
07 Series row units include a seed flap, and accept one
of two optional seed firmers.
The seed flap requires no adjustment, but may need to
be replaced if worn (page 135), and may need to be
shortened if an optional seed firmer is added after initial
delivery.
Row unit disc blades may be sharp. Use caution when making
adjustments in this area. To adjust the Keeton
®
Seed Firmer,
lower the drill until the discs of the row units are resting on the
ground.
Keeton
®
Seed Firmer Adjustment
The optional Keeton
®
Seed Firmer is an engineered
polymer shape that slides down the seed trench. It traps
seeds as they exit the seed tube and firms them into the
bottom of the “V”.
Refer to Figure 78
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.
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
problems associated with this, you can lock-up the
firmers.
Refer to Figure 79
To lock up Seed-Lock wheels:
1. Pull catch wire aside .
2. Pull up on Seed-Lok™ arm .
3. Engage wire.
Figure 78
Keeton
®
Seed Firmer
32444
1
1
Figure 79
Seed-Lok™ Lock-Up
27122
1
2
1
2