GREAT PLAINS 1007NT, Operator'S Manual, Page: 40 / 86

36 1007NT
Great Plains Manufacturing, Inc.
150-290M 03/18/2019
Opener Adjustments
Opener Down Pressure
Opener springs provide the down pressure necessary for
opener discs to open a seed trench. The springs allow
the openers to float down into depressions and up over
obstructions.
Each opener spring can be adjusted for down pressure.
This is useful when planting in tractor tire tracks.
Refer to Figure 26
To adjust the pressure, remove “W” clip at bottom of
spring. Place “W” clip in a higher hole in spring rod for
more pressure or in a lower hole for less pressure.
Use this adjustment only for a few rows, typically in tire tracks.
Do not set row force higher on all rows. Instead use coulter
adjustments (page 28) and frame weight adjustments
(page 32).
Re-check drill level (page 16) after adjusting row force.
Disc Scraper Adjustment
To keep opener discs turning freely, dirt scrapers are
mounted between discs to clean as the discs rotate. As
field conditions vary, scrapers may need to be adjusted.
In damp conditions, scrapers may need to be lowered. If
openers are not turning freely, scrapers may need to be
raised.
Refer to Figure 27
To adjust scrapers, loosen
3

8
inch bolt shown in and
move scraper as needed.
The standard scraper is shown. Optional spring-loaded
carbide scrapers are available (see page 56). They
require no adjustment.
“W” Clip Hole
Row Down Force Added
Pounds kg
Highest +60 +27
Middle +30 +14
Lowest Factory Setting
Maximum Pressure
12103
Minimum Pressure
12102
“W”
“W”
Figure 26
Opener Down Pressure Adjustment
Figure 27
Disc Scraper Adjustment
18647
1
1