Great Plains 2N-3010 Material Rate - Manual (Page 4)

196-126B 12/17/2003
Great Plains Mfg., Inc.
4
Refer to Figure 2
2. Adjust Seed-Rate Handle
Position the handle to the setting indicated on the
seed-rate chart. To adjust, loosen the wing nut under
the handle and slide until indicator lines up with de-
sired setting. Retighten nut.
Refer to Figure 3
3. Set Seed-Cup Doors
For wheat and other small seeds, move the seed-cup-
door handles to the highest position. For soybeans
and other large seeds, lower the handles to the sec-
ond position. If excessive seed cracking occurs, lower
the handles to the third position. For seed-cup clean
out, move the handles to the fourth, wide-open posi-
tion. Make sure all handles are in the same position
before drilling.
Figure 3
Seed-Cup Door Handle
Figure 2
Seed-Rate Handle
12927
13867
4. Check Seeding Rate
a. Place several pounds of seed over the three seed
cups on the outside end of the drill box.
b. Disconnect the seed tubes from the three openers
fed by the covered cups.
c. Raise the drill off the ground.
d. Record the empty weight of a container large
enough to hold the seed metered for one acre.
e. Turn gauge wheels until seed drops to the ground
from each cup.
f. Place a container under the three seed tubes to
gather the seed as it is metered.
g. Rotate the gauge wheel until one acre has been
tallied on the acremeter. This will be about 225 ro-
tations on a 24-foot drill and about 181 rotations
on a 30-foot drill. Check that the seed cups have
plenty of seed coming into them.
h. Weigh the metered seed. Subtract the initial
weight of the container. Divide by three. Multiply
by the number of openers on your drill for the
pounds-per-acre seeding rate. If this figure is dif-
ferent than desired, re-adjust the seed-rate han-
dle and recheck the rate.
5. When satisfied with the seeding rate, repeat steps 1
through 3 for the other drill box, setting it to the same
rate.
Small Seeds Attachment
To set the seeding rate, refer to the small-seeds-rate chart
on page 9. Move the seed-rate handle on the attachment
to the setting indicated on the chart.
To calibrate the attachment to your material, follow the
steps listed under Check Seeding Rate, this page.