Great Plains 2510HDF Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 33
2013-11-11 Table of Contents Index 288-340M
Main Box Seed Rate Handle
There are identical seed rate handles for each half of the
drill. Generally, both need to be set identically. You can
stop seed flow to one half of the drill by setting a handle
to zero (for point-row planting, for example).
The seed rate handle controls the percent engagement
of the seed sprocket in each seed cup.
Refer to Figure 27
1.
Loosen wing nut under handle.
2. Set indicator to about 10 past value from Seed
Rate Chart, then move handle back to target value.
3. Tighten wing nut.
Seed Cup Door
Refer to Figure 28,
which depicts the seed cup door handle in position
.
At each seed box seed tube, adjust the seed cup door
handle
for the seed size.
The handle has three normal operating position detents:
Note: Handle position is used for cleanout, not plant-
ing. If set to this position with seed loaded, it may be
difficult to reset it to a normal operating position.
Main Box Calibration
Refer to sample data and formulas at right.
1.
As necessary, convert your target seed population to
pounds per acre.
2. Set Drive Type, rate handle and seed cup door per
the earlier instructions.
3. Record weight of an empty container large enough
to hold seed metered for one acre for three rows.
4. Place several pounds of seed over three seed cups
on an outside end of a drill box. Pull seed tubes off of
these three openers and route them to container.
Figure 27
Main Box Seed Rate Handle
17618
1
2
1
2
(top detent) is for the smallest seeds.
Use it for wheat and similar small seeds.
(middle detent) is for larger seeds.
Use it for soybeans and similar larger seeds.
(bottom detent) is for oversize or fragile seeds.
If you experience excessive cracking with
setting
, use setting .
Figure 28
Seed Cup Door Handle
26211
4
3
1
5
2
3
4
1
2
3
2 3
5
For example:
Drill: 2510HDF-2910
Seed: Soybeans, 80,000 seed bag weight: 35 pounds
Target population: 210,000 seeds per acre
80000 ÷ 35 = 2286 seeds per pound
210000 ÷ 2286 = 92 pounds per acre
Drive Type: 3
Rate Handle: between 50 and 55, approximately 51
Assume empty ContainerWeight of:
2.5 pounds