Great Plains YP4425A Operator Manual - Manual (Page 84)

80 YP4425A Table of Contents Index Great Plains Manufacturing, Inc.
401-805M Table of Contents Index 2012-02-23
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.
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 discs encounter
obstructions.
There are three adjustments available on the press
wheel assembly:
Refer to Figure 103
1.
Down pressure (shown at maximum)
2. Wheel stagger (shown staggered)
3. Centering (see Figure 105 on page 81)
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.
Note: 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 67.
Press Wheel Stagger
The factory stagger setting has been found optimal for
residue flow. If your conditions appear to require even
press wheels, you might try one row before
re-configuring the entire planter. To change the stagger:
Refer to Figure 104
1.
Raise the planter and install the lift assist cylinder
locks. See “Lift Cylinder Lock-Up” on page 27.
2. Remove the bolt , nut and lock-washer for the
left press wheel .
3. Move the spacer and wheel to the forward of
the two mounting holes at .
4. Re-install the bolt, lock washer and nut. Tighten.
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 67.
Figure 103
Press Wheel Adjustments
25118
1
3
2
1
1
Figure 104
Press Wheel Force & Stagger
22907
1
8
7
6
5
3
4
2
4 5 6
8
7 8
2