Great Plains 3N-4025P Operator Manual - Manual (Page 184)

180 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
Sprocket Indexing Charts (Metric)
1. For: your 6- or 12-finger meter, and your twin row
spacing (70cm on this page) find your seed rate in
the Population column, or your seed spacing in the
Seed Spacing column. Seed spacing is
seed-to-seed within a single row of a twin row pair.
2. At the front/forward row unit of a pair, set the driven
(final) sprocket of the meter drive so that tooth
stamped #1 is straight up (TDC, 12:00 position).
3. At the rear/trailing row unit of the pair, set the driven
sprocket so that the tooth number at “Rear Meter” is
in the straight up 12:00 position.
These charts are for 70cm metric spacing. See page 86
for U.S. customary units.
Not Rate or Spacing Charts:
These are NOT seed rate or seed spacing charts. These are for
staggering seed spacing between the rows of a twin row.
Note: For adjusting spacing between rows of the pair,
see “Indexing Fine Adjustment” on page 87.
Setting Error Risk:
Verify the 12:00 sprocket tooth position with the top length of
chain taut.
6 Finger Meter Twin Row Sprocket Indexing
70cm (27.6in) Twin Row
Population Single Row
Seeds per Seed Front Rear
Hectare Spacing (cm) Meter Meter
42 300 to 46 600 61.4 to 67.6 1 4
46 600 to 50 600 56.5 to 61.4 1 7
50 600 to 54 900 52.0 to 56.5 1 10
54 900 to 59 200 48.3 to 52.0 1 13
59 200 to 63 400 45.0 to 48.3 1 16
63 400 to 67 300 42.4 to 45.0 1 19
67 300 to 71 600 39.9 to 42.4 1 3
71 600 to 76 100 37.5 to 39.9 1 6
76 100 to 80 400 35.5 to 37.5 1 9
80 400 to 84 700 33.7 to 35.5 1 12
84 700 to 88 900 32.2 to 33.7 1 15
88 900 to 93 300 30.6 to 32.2 1 18
93 300 to 97 400 29.3 to 30.6 1 2
97 400 to 101 700 28.1 to 29.3 1 5
101 700 to 105 700 27.0 to 28.1 1 8
105 700 to 109 700 26.0 to 27.0 1 11
109 700 to 114 300 25.0 to 26.0 1 14
114 300 to 118 400 24.1 to 25.0 1 17
118 400 to 122 100 23.4 to 24.1 1 1
122 100 to 126 400 22.6 to 23.4 1 4
126 400 to 130 800 21.8 to 22.6 1 7
130 800 to 135 500 21.1 to 21.8 1 10
135 500 to 139 400 20.5 to 21.1 1 13
139 400 to 143 400 19.9 to 20.5 1 16
31456A
Set Sprocket to Tooth
Number on ..
12 Finger Meter Twin Row Sprocket Indexing
70cm (27.6in) Twin Row
Population Single Row
Seeds per Seed Front Rear
Hectare Spacing (cm) Meter Meter
71 600 to 76 100 37.5 to 39.9 1 13
76 100 to 80 400 35.5 to 37.5 1 5
80 400 to 84 700 33.7 to 35.5 1 16
84 700 to 88 900 32.2 to 33.7 1 8
88 900 to 93 300 30.6 to 32.2 1 19
93 300 to 97 400 29.3 to 30.6 1 11
97 400 to 101 700 28.1 to 29.3 1 3
101 700 to 105 700 27.0 to 28.1 1 14
105 700 to 109 700 26.0 to 27.0 1 6
109 700 to 114 300 25.0 to 26.0 1 17
114 300 to 118 400 24.1 to 25.0 1 9
118 400 to 122 100 23.4 to 24.1 1 1
122 100 to 126 400 22.6 to 23.4 1 12
126 400 to 130 800 21.8 to 22.6 1 4
130 800 to 135 500 21.1 to 21.8 1 15
135 500 to 139 400 20.5 to 21.1 1 7
139 400 to 143 300 19.9 to 20.5 1 18
143 300 to 148 000 19.3 to 19.9 1 10
148 000 to 152 200 18.8 to 19.3 1 2
152 200 to 156 400 18.3 to 18.8 1 13
156 400 to 160 700 17.8 to 18.3 1 5
160 700 to 164 900 17.3 to 17.8 1 16
164 900 to 169 200 16.9 to 17.3 1 8
169 200 to 173 300 16.5 to 16.9 1 19
31457A
Set Sprocket to
Tooth Number on ..