Great Plains 800 Operator Manual - Manual (Page 33)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 29
2011-10-25 Table of Contents Index 175-057M
Row Unit Adjustments
Refer to Figure 20 (which depicts a row unit fully populated
with all optional accessories [except scraper and Keeton
®
]
supported for use with the Model 800 drills)
From front to back, a Great Plains 00 Series row unit can
include the following capabilities (some optional):
1. Opener height adjustment: standard
If a few rows need to run deeper, such as in tire
tracks, the arm’s pivot point may be lowered.
See “Opener Height” on page 30.
2. Single Down Pressure Spring: standard
Each row unit is mounted on the drill as a pivoting
arm which allows the row unit to independently move
up and down. The adjustable spring provides the
force to get the row unit and attachments into the
soil. See “Row Unit Down Pressure (Spring)” on
page 30.
3. Disc Blades: standard, 2 per row unit
Double disc blades open a furrow, creating the seed
bed. Spacers adjust the blades for a clean furrow.
See “Disc Blade Adjustments” on page 31.
4. Seed delivery tube: standard
No adjustments are necessary.
5. Disc Scraper: standard (not shown)
In sticky soils, a scraper helps keep the opener discs
operating freely. A slotted scraper is standard.
A spring-loaded carbide scraper is optional.
See “Carbide Disc Scraper” on page 50.
6. Seed firmer:
seed flap (not shown) standard:
Seed-Lok
®
firming wheel (shown)
Improves seed-soil contact. See “Seed-Lok
®
Seed
Firmer Lock-Up” on page 32.
Keeton
®
seed firmer (not shown)
Improves seed-soil contact, and provides a stable
arm for a low-rate liquid fertilizer delivery tube.
See “Keeton
®
Seed Firmer Adjustment” on
page 32.
7. Press wheels: standard (choice of types)
These close the seed trench. The wheels also
support the free end of the row unit, and provide the
primary control over seeding depth. See “Opener
Depth (Press Wheel Height)” on page 33.
Equipment Damage Risk:
Do not back up with row units in the ground. To do so will
cause severe damage and row unit plugging.
Figure 20
00 Series Row Unit
26382
1
2
3
5
4
6
7
7