GREAT PLAINS Yield-Pro YP4025A-48TR20, Operator'S Manual

Page: 82 / 190

2019-03-19 Table of Contents Index 411-198M
YP4025A-48TR20 Table of Contents Index Adjustments 78
25 Series Row Unit Adjustments
Refer to Figure 74
(which depicts a row unit populated with most
optional accessories supported for use with the
Product)
From front to back, a Great Plains 25 Series row unit can
include the following capabilities (some optional):
1.
Lock-Up Pin Storage Hole (Hole Standard)
See “ Row Unit Shut-Off ” on page 90.
2. Down-Pressure Cam (Standard)
Row units are mounted on parallel arms. This
parallel-action mounting allows the row-unit to move
up and down while staying horizontal. Springs add
an adjustable force, set by the cam, to the row
weight. See “ Row Unit Down Pressure ” on
page 79.
3. Air Inlet (Standard)
Pressure-regulated air enters the meter here and
holds seed in the disk pockets. See “ Fan and
Adjustment ” on page 72.
4. Seed Delivery Hose Inlet (Standard)
Air carrying the bulk seed is vented at the bottom of
the air release cone. Gravity then carries the seed
into the meter at the shutter . The hose is easily
removed for inspection. There are no adjustments.
5. Air-Pro
®
Seed Meter (Standard, Choice of Disks)
See “ Air-Pro
®
Meter Disk Installation ” on page 88.
6. Seed Inlet Shutter (Standard)
This controls the level of bulk seed at the disk. There
are four operating settings, plus fully open
(clean-out) and fully closed (shut-off or storage). See
“ Seed Inlet Shutter Adjustment ” on page 86.
7. Side Gauge Wheel Depth (Standard)
The T-handle sets planting depth by controlling the
height of the side gauge wheels relative to the
opener discs. See “ Side Gauge Wheel
Adjustment ” on page 84.
8. Press Wheel Force, Angle, Stagger (Standard)
The press wheels close the furrow, gently pressing
the soil over the seed to ensure good seed to soil
contact for even emergence. See “ Press Wheel
Adjustment ” on page 93.
9. Row Unit Lock-Up Hole (Hole Standard)
Pins are standard on some models. With the row unit
raised above level, the lock-up pin is inserted here.
See “ Row Unit Shut-Off ” on page 90.
10. Unit-Mount Coulter (Option)
Coulters cut remaining trash and begin opening the
seed furrow. Working depth is set by row depth and
a mounting hole selection. See “ Unit-Mount Coulter
Adjustments ” on page 81.
11. Opener Discs (Standard)
Row-unit double disc openers create the seedbed
furrow. They have adjustments for angle and
spacing. See “ Row-Unit Opener Disc
Adjustments ” on page 83.
12. Seed Tube with Sensor (Standard)
Requires no adjustment.
13. Scrapers (Optional, not shown)
Inside scrapers require no adjustment. For gauge
wheel scrapers, see “ Adjusting Gauge Wheel
Scrapers ” on page 85.
14. Seed Firmers (Seed Flap Standard, not shown)
An optional seed firmer (Keeton
®
shown) minimizes
seed bounce and improves soil contact. It may also
deliver fertilizer. See “ Seed Firmer Adjustments ” on
page 92.
15. Press Wheel Type (Choice)
A variety of single and dual press wheel assemblies
are available, some region-specific. Consult your
Great Plains dealer.
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 74
25 Series Row Unit
36439
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