Great Plains YP1625 Operator Manual - Manual (Page 65)

Great Plains Manufacturing, Inc. Adjustments 61
07/09/2009 401-226M
Seed Firmer Adjustments
25 Series row units accept one of two optional firmers.
!
CAUTION
Row unit disk blades may be sharp. Use caution when making
adjustments. To adjust the Keeton Firmer, lower the planter
until the disks of the row units are resting on the ground.
Keeton Seed Firmer Adjustment
The optional Keeton Seed Firmer is an engineered poly-
mer shape that slides down the seed trench. It traps
seeds as they exit the seed tube and firms them into the
bottom of the furrow.
Refer to Figure 79
The Firmer is provided with a preset tension which is rec-
ommended 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
in. If not,
loosen the bolts in the mounting bracket and select differ-
ent 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 condi-
tions the wheels may accumulate soil. To avoid problems
associated with this, you can lock-up the firmers.
Refer to Figure 80
To lock up Seed-Lock wheels:
1. Raise planter. Insert lift assist cylinder locks.
2. Rotate Seed-Lok™ lock-up handle 90 degrees
down on top of row unit body.
3. Push up on Seed-Lok™ wheel until wheel arm
latches up.
Figure 79
Keeton Seed Firmer
20327
1
1
Figure 80
Seed-Lok™ Lock-Up
22909
1
2
1
2