Great Plains CTA4000 Operator Manual - Manual (Page 24)

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Section 3 Adjustments
CTA4000 Air Drill Implement 160-269M 2/1/06
Great Plains Mfg., Inc.
5. Raise openers fully and check that switch is com-
pressed as shown Figure 3-8.
Figure 3-8
Metering Off Position
Disk Scraper Adjustment
To keep opener disks turning freely, dirt scrapers are
mounted between disks to clean as disks rotate. As field
conditions vary, scrapers may need to be adjusted. In
damp conditions, lower scrapers. If openers are not turn-
ing freely, raise scrapers. To adjust, loosen 3/8-inch bolt
shown in Figure 3-9 and move scraper as needed.
Figure 3-9
Disk Scraper Adjustment
17197
16163
Seed-Lok
Optional Seed-Lok firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and do
not require adjusting. In some wet and sticky conditions
the wheels may accumulate soil.
To lock up firming wheels, hook one end of chain in open-
er-body hole just above wheel arm (1). Pull firming-wheel
arm (2) up as high as possible and wrap chain around
arm. Hook other end of chain in a link. Leave no slack in
chain; secure wheel arm in its highest position.
Figure 3-10
Seed-Lok Lock Up
1
2