Great Plains YP1625 Operator Manual - Manual (Page 51)

Great Plains Manufacturing, Inc. Adjustments 47
07/09/2009 401-226M
25 Series Row-Unit Adjustments
Refer to Figure 51, which depicts a 25 Series row unit fully
populated with all options supported on YP1225 and 1625 (ex-
cepting Seed-Lok)
1.
See “Row-Unit Down Pressure” on page 48. 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
2. See “Row Unit Lock-Up” on page 49. A row unit
may be completely disengaged by locking it in the full
up position.
3. See “Unit-Mount Cleaner Adjustments” on
page 50. Optional row cleaners clear trash from the
row, to a depth set by an adjustment.
4. See “Unit-Mounted Coulter Adjustments” on
page 51. 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 52. 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 52.
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 54. 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 61.
An optional seed firmer (Keeton shown) minimizes
seed bounce and improves soil contact. It may also
deliver fertilizer.
9. See “Press Wheels” on page 62.
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.
IMPORTANT !
Do not back up with row-units in the ground. This will
cause severe damage and row-unit plugging.
Figure 51
25 Series Row Unit
25193
➊
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