Great Plains CP1000 Operator Manual - Manual (Page 24)

22
Section 3 Adjustments
CP1000 Three-Meter Drill and Hitch 148-358M 7/5/2005
Great Plains Mfg., Inc.
Changing Drive Sprockets
For correct drive type, refer to seed-rate charts starting on
page 24. The charts lists drive types as 1, 2, 3 or 4. Refer
to the following table for correct-sized sprocket for each
drive type.
To change drive types, remove the chain guard (1) by loos-
ening wing nuts (2). See Figure 3-12.
Figure 3-12
Chain Guard
Loosen idler (1) and remove drive chain shown in Figure
3-13. Remove lynch pin from shaft (2) and re-arrange
sprockets on shaft.
Figure 3-13
Drive Sprockets
NOTE: Be sure chain is installed with the chain connector
link retainer towards the centerline and the clip opening
(split end) faces the opposite way of the chain travel.
Drive Type Sprocket Speed
Type 1 72-tooth Slowest
Type 2 34 tooth Two Times Faster Than Type 1
Type 3 23-tooth Three Times Faster Than Type 1
Type 4 14-tooth Five Times Faster Than Type 1
1
2
2
21502
17211
2
1
Setting Seed-Rate Handle
Position seed-rate handle shown in Figure 3-14 to setting
indicated on seed-rate charts.
To adjust, loosen wing nut under handle. Slide handle until
indicator is just past the correct setting, then move the
handle back until indicator lines up with correct setting.
Figure 3-14
Seed-Rate Handle
Positioning Seed-Cup Doors
For wheat and other small seeds, move seed-cup-door
handles to the highest position. For soybeans and other
large seeds, lower handles to second position. If exces-
sive seed cracking occurs, lower handles to third position.
For seed-cup clean out, move handles to the fourth, wide-
open position. Make sure all handles are in the same posi-
tion before drilling.
Figure 3-15
Seed-Cup-Door Handle
16653
16651