Great Plains YP1625 Operator Manual - Manual (Page 57)

Great Plains Manufacturing, Inc. Adjustments 53
03/12/2012 401-226M-A
25 Series Row-Unit Adjustments
Refer to Figure 69, which depicts a 25 Series row unit fully
populated with all options supported on YP1225 and YP1625
(excepting Seed-Lok)
1.
See “Row-Unit Down Pressure” on page 54. Each
row-unit is mounted on the planter with parallel arms.
This parallel-action mounting allows the row-unit to
move up and down while staying horizontal. A cam
varies the down-force.
2. See “Row Unit Shut-Off” on page 56. A row unit
may be completely disengaged by locking it in the full
up position.
3. See “Unit-Mount Cleaner Adjustments” on
page 58. Optional row cleaners clear trash from the
row, to a depth set by an adjustment.
4. See “Unit-Mounted Coulter Adjustments” on
page 59. An optional disk coulter cuts remaining
trash and begins opening the seed groove. Its work-
ing depth is set by the side gauge wheels
➂
and a
mounting hole selection.
5. See “Row-Unit Planting Depth” on page 60. Row-
unit double disk openers widen the coulter groove,
making a seed bed. They have adjustments for angle
and scraper clearance.
6. See “Side Gauge Wheel Adjustments” on page 61.
Side gauge wheels are the primary control over seed
depth. They have adjustments for depth and angle.
An optional scraper also needs periodic adjustment.
7. See “Meter Exchange and Adjustments” on
page 63. A seed tube mounted between the disks
(not shown) delivers seed to the trench. It is fed by a
seed meter which may have adjustments or inter-
changeable wheels.
8. See “Seed Firmer Adjustments” on page 70.
An optional seed firmer (Keeton shown) minimizes
seed bounce and improves soil contact. It may also
deliver fertilizer.
9. See “Press Wheel Adjustments” on page 71.
The press wheels close the furrow, gently pressing
the soil over the seed to ensure good seed to soil
contact for even emergence. They have adjustments
for down-pressure, stagger and angles.
FigureSpacer:
Plugging and Machine Damage Risk:
Do not back up with row-units in the ground. This will cause
severe damage and row-unit plugging.
Figure 69
25 Series Row Unit
25193
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