Great Plains YP4025F-1670 Operator Manual - Manual (Page 93)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 89
2014-09-08 Table of Contents Index 401-571M
Seed-Lok
®
Seed Firmer Lock-Up (older style)
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 117
To lock up Seed-Lok
®
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.
Press Wheel Adjustment
The press wheels close the furrow which gently presses
the soil over the seed to ensure good seed-to-soil
contact for even emergence. On 10HD Series openers,
the press wheel height also controls seed depth.
To provide consistent seed firming, the press wheels are
free to move downward from their normal operating
position. This system maintains closing/pressing action
even if the row unit arm is lifted when the disks encounter
obstructions.
Press wheel adjustments available depend on the row
unit Series:
10HDP Series: page 69
25P Series: page 89
Note: On 25P Series, higher press wheel down
pressures reduce the down force on the main row
unit shank components, such as the openers.
High press wheel settings may require an increase
in overall row unit down force. See page 71.
25P Series Press Wheel Adjustment
25 Series press wheels have three adjustments:
Refer to Figure 118
a. Down pressure (shown at maximum)
b. Wheel stagger (shown staggered)
c. Centering (see Figure 120 on page 90)
Press Wheel Down Pressure
Handle
sets down pressure, which may need
adjustment for different soil types and field conditions.
• Relax the handle forward (in the direction of travel) for
decreased down pressure.
• Pull the handle back for increased down pressure.
Figure 117
Seed-Lok
®
Lock-Up (older style)
22909
1
2
1
1
2
Figure 118
Press Wheel Adjustments
25118
a
c
b
a