GREAT PLAINS 2SNG24, Original Instructions Manual

202-578B

Table of Contents

02/22/2019

22

Table of Contents

Great Plains Manufacturing, Inc.

2SNG24 & 2SNG30

Seeding Brome Grass
with Native Grass Box

When seeding Brome Grass, the calibration procedure 

differs from other native grasses.
To adjust seeding rate:
1. Find the desired pounds per acre on the Brome 

Grass Rate Chart on page 24.

2. Determine which Drive Type and Native Grass 

sprocket pair are required for brome grass. The 

sprockets are stored on the left-hand side of the drill. 

The Drive Type is set by ground drive sprockets.

a. To change Drive Type sprockets see page 3.

b. To change Native Grass sprocket pair see page 19 

To calibrate seed mix:
1. Record the weight of an empty container large 

enough to hold seed metered from the native grass 

box.

2. Raise drill to get drive wheel off the ground. To cali-

brate using calibration crank, attach crank to upper 

jackshaft.

3. Fill three or more compartments at least 

1



2

 full of 

seed in the native grass box. Pull seed hoses off 

openers under the compartments.

Refer to Figure 18

4. To calibrate using calibration crank, disengage 

gauge wheel lockout, and attach calibration crank to 

coupler on left-hand side of gauge wheel jackshaft 

using retaining pin.

5. Turn gauge wheel or crank several times to fill seed 

cups with seed. Continue to turn gauge wheel or 

crank until seed falls to the ground from each cup.

6. Place the empty container under three seed hoses to 

gather the seed as it is metered.

Rotate gauge wheel or calibration crank one acre, as tal-

lied on Acremeter, or as counted based on values from 

table at right.
Note: You can also rotate the gauge wheel jackshaft by 

means of a wrench or socket. If rotating gauge 

wheel jackshaft, disengage the lockout on the drive 

wheel and use same number of rotations as for ro-

tating drive wheel.

7. Check that the three seed cups have plenty of seed 

coming into them.

Figure 18

3PNG Calibration Crank

and Native Grass Sprockets

23467

Figure 19

Native Grass Drive Types

26293

Note: These settings are based on 9.5L-15 tires inflated 

to factory specifications.

Revolutions for One Acre

2SNG24

2SNG30

Crank: Drive Type 1

151

122.5

Crank: Drive Type 1A

310.5

251

Crank: Drive Type 2

44.5

40

Crank: Drive Type 2A

101.5

82

Gauge Wheel

225

182