Great Plains V-300F Operator Manual - Manual (Page 39)

6/29/2006 148-057M
37 Adjustments
Fertilizer Rate Calibration
The fertilizer rates are controlled by a sprocket speed
change selection and by a slide gate which controls
the meter opening size. The charts shown are calcu-
lated with the openings at 100% open. Any
adjustments to the opening at less than 100% open
will have to be calibrated for the correct rate. (See cal-
ibration instructions below.)
Fertilizer application rates will vary with fertilizer type,
density and particle size. Relative humidity and field
conditions can also affect application rates. The
charts on page 40 are based on fertilizer with average
particle size and a density of 1.04 kilograms per liter
(65 pounds per cubic foot). Initially set rate according
to charts, then calibrate drill to your material as de-
scribed on this page.
1. Refer to fertilizer rate charts on page 40 for cor-
rect sprocket sizes for your drill and desired
meter rate.
IMPORTANT: The rate charts are for granular fer-
tilizer with a density of 1.04 kilograms per liter (65
pounds per cubic foot). If you are applying fertiliz-
er with a different density, use density conversion
chart on page 41.
Refer to Figure 38
2. Remove chain guard (1) by removing bolts (2). To
switch between high and low range, loosen and
slide idler sprocket (3) out of chain. Remove
lynch pin from end of shaft and install correct
sprocket.
• For high range, install 16-tooth sprocket.
• For low range, install 44-tooth sprocket.
• For special range, install 12-tooth sprocket.
• For special high range, install 12-tooth sprocket.
3. Tighten chain with idler.
NOTE: Special High Range Fertilizer Sprocket
Refer to Figure 39
In order to run special high rate fertilizer it will be nec-
essary to change the final drive sprocket from a 12
tooth to a 19 tooth sprocket.
a. Loosen the idler sprocket on the fertilizer final
drive chain.
b. Remove the lynch pin and remove the 12
tooth sprocket.
c. Install the 19 tooth sprocket and replace the
lynch pin.
16379
12/16/44T
3
19T
21896
Figure 38
Hi/Low Range Sprockets
Figure 39
Special High Range Sprocket
23201