Great Plains YP1625 Operator Manual - Manual (Page 102)

1625
401-182M 7/12/2005
100
Seed Rate Charts
Seeding Rate
Adjusting the seeding rate requires the following:
1. adjusting drive speed range sprockets,
2. adjusting transmission sprockets,
3. preparing seed meters,
4. checking seeding rate.
Before setting the seeding rate, rotate the gauge
wheel. Check that seed meters, seed tubes and
drives are working properly and free from foreign
material.
Drive Speed Range Sprockets
Select the correct drive speed range sprockets for
your seed by referring to the “Seed Rater Charts,”
next page.
Refer to Figure 73
Loosen idler (1) and remove chain (2). Remove
retaining pins (3) from shafts and install speed
range sprockets as necessary.
NOTE: Make sure the correct sprockets have
been installed in the DRIVER and DRIVEN loca-
tions as shown.
Reroute chain over sprockets and idlers as
shown. Move idler into chain so chain has 1/4-
inch slack in its longest span. Tighten idler and in-
stall retaining pins.
Transmission Sprockets
To change the seeding rate, change the transmis-
sion sprocket combination. Refer to “Seed Rater
Charts,” next page.
Refer to Figure 74
Loosen idler (1) and remove drive chain (2). Re-
move lynch pins (3) from shafts and rearrange
drive and driven sprockets as necessary.
Reroute drive chain over sprockets and idlers as
shown. Move idlers into chain so chain has 1/4-
inch slack in its longest span. Tighten idlers and
install lynch pins.
Note: For seed rate calibration refer to “Check
Singulated Seeding Rate,” page 40
Figure 73
Drive Speed Range Sprockets Adjustment
21974
1
2
3
Driven
3
Driver
Figure 74
Transmission Sprockets Adjustment
21974
Driven
Driver
1
2
3
2