Finger meter stagger adjustment – Great Plains YP2425F-2470 Material Rate User Manual
Page 26
24
YP2425 & YP2425F
Great Plains Manufacturing, Inc.
401-406B
2013-09-23
12-Finger Meter Stagger Adjustment
Before making any Indexing Adjustments, check actual
planted seed spacing. Seed Spacing is found by
measuring the distance between 25 correctly planted
seeds in one row and dividing by 24. (A visible skip or
double should be counted as one seed.) Make sure
current rear sprocket index number matches the number
in the indexing chart for actual seed spacing being
planted.
Find your current indexing value row in the charts on
page 21 or page 22.
Each (sprocket tooth) number directly above or below the
current rear meter sprocket setting in the right most
column of the seed indexing chart represents a small
movement of the rear row seed relative to the front row
seed.
For 12-finger meters, changing the rear sprocket to the
next tooth number down in the chart retards, moving
each rear row seed back a small amount.
Changing the rear sprocket to the next tooth number up
in the chart advances, moving each rear row seed ahead
a small amount.
Example 1: The 12 Finger (Twin Row 30 inch) planting
population is 37,400 or 12.1 inch seed spacing. The
chart setting for the rear sprocket is either T#19 or T#11.
Assume T#11 is used. Each rear row seed should fall
6 inches behind the front row seed.
If each rear row seed measures 7 inches behind the front
row seed, reset the rear meter sprocket to the next
number up in the chart (T#19). This moves the rear
seeds ahead and makes the stagger closer to 6 inches.
Example 2: The 12 Finger (Twin Row 30 inch) planting
population is 37,400 or 12.1 inch seed spacing. The
chart setting for the rear sprocket is either T#19 or T#11.
Assume T#11 is used. Each rear row seed should fall
6 inches behind the front row seed.
If each rear row seed measures 5 inches behind the front
row seed, reset the rear meter sprocket to the next
number down in the chart (T#3). This will move the rear
seeds back to make the stagger closer to 6 inches.
28422
g
p
g
30in (76.2cm) Twin Row
Population
Single Row
Seeds per
Seed
Front
Rear
Acre
Spacing (in)
Meter
Meter
26,600 to 28,300
14.8 to 15.7
1
13
28,300 to 29,900
14.0 to 14.8
1
5
29,900 to 31,500
13.3 to 14.0
1
16
31,500 to 33,000
12.7 to 13.3
1
8
33,000 to 34,700
12.1 to 12.7
1
19
34,700 to 36,200
11.6 to 12.1
1
11
36,200 to 37,800
11.1 to 11.6
1
3
37,800 to 39,300
10.6 to 11.1
1
14
39,300 to 40,800
10.3 to 10.6
1
6
40,800 to 42,500
9.8 to 10.3
1
17
42,500 to 44,000
9.5 to 9.8
1
9
44 000 to 45 400
9 2 to 9 5
1
1
Set Sprocket to
Tooth Number on ..
Advance
☞
Retard
☞
Current
☞
Figure 11: Portion of 12-Finger
Sprocket Indexing Chart
31457B