Great Plains YP1220 Operator Manual - Manual (Page 52)

48 YP1220 Great Plains Manufacturing, Inc.
401-506M 03/14/2012
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 56
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.
4. To return to normal operation, turn release down.
Press Wheels
Attached to the rear of each row-unit is one of several
press wheel options.
To provide consistent seed firming, the press wheels are
free to move downward from their normal operating posi-
tion. This system maintains pressing action even if the
row-unit arm is lifted when the disks encounter obstruc-
tions.
Refer to Figure 57
Press wheels are attached to each row-unit body. The
press wheels close the seed trench and gently press soil
over seed.
An adjustable spring in the press wheel mechanism cre-
ates the down pressure needed to close the seed trench.
The amount of force needed will vary with field condi-
tions.
To adjust, move adjustment handle.
• For less down pressure, move handle forward toward
planter.
• For more down pressure, move handle back away
from planter.
Note: Increased press wheel spring force may require in-
creased row-unit down force to maintain depth.
Note: The factory setting on the press wheel is staggered
to achieve optimum residue flow.
Figure 56
Seed-Lok™ Lock-Up
27463
1
2
3
1
2
3
Figure 57
Press Wheel Adjustment
21948
More Down
Pressure
Less Down
Pressure