Great Plains 3000 Operator Manual - Manual (Page 21)

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Section 3 Adjustments
9/9/10 2700 and 3000 Three-Point Drill 118-365M-A
Great Plains Mfg., Inc.
Speed Adjustment
The markers are equipped with hex-head screws for ad-
justing folding speed. The screws are on the sequence-
valve body as shown in Figure 3-17. There are two
screws–one for folding speed (1), the other for unfolding
speed (2). Turn the adjustment screws clockwise for slow-
er folding or counterclockwise for faster folding. Adjust to a
safe speed. Excessive speed could damage the markers
and void the warranty.
Figure 3-17
Folding Speed Adjustment
Disk Scraper Adjustment
To keep the double-disk openers turning freely, dirt scrap-
ers are mounted between the disks to clean as the disks
rotate. A scraper is shown in Figure 3-18. As field condi-
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tions vary, you may need to adjust the scrapers. In damp
conditions, the scrapers may need to be lowered. If open-
ers are not turning freely, the scrapers may need to be
raised. To adjust scrapers, loosen the 3/8-inch bolt and
move scraper as needed.
Figure 3-18
Disk Scraper
Seed-Lok
™
The 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. Remove or install the
wheels as field conditions warrant.
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