John Deere 50 & 60 Series
Combine Calibration
This reference guide outlines the calibration process for the Harvest Doc yield monitoring system found in
John Deere 50 & 60 series combines and will not satisfy calibration requirement for 70 series or S-Series
combines.
The accuracy of the calibration and grain thrashing system settings will determine the accuracy of the yield
data. Please refer to combine pre-harvest recommendations and inspect equipment as recommended. Before
calibrating, ensure the combine grain tank and unload auger are empty.
NOTE: For specific procedures on yield monitor calibration, refer to the combines Operator’s Manual. This
document has been developed as a quick reference guide and may not include information that has been
updated since its development. Because there are various types of yield monitor systems, verify which is
installed and the required calibration procedures associated with that system.
Standard Calibration Procedure
1. Select the Original GreenStar Monitor
button if accessing through a GS2 or GS3
Display. If using and Original Display
begin at Step 2.
2. Select Setup, then the Harvest Monitor (A)
button.
3. Select the Yield Calibration (D) button.
4. Select the Standard Calibration Mode (B)
button.
Once you are ready to harvest, press Start ©
and begin harvesting
Best Practice: Operate your machine at full
capacity on reasonable level ground and in
uniform yield crop.
Example: 5 mph
5. After harvesting 3,000 – 5,000 pounds of
crop, stop the combine and allow all
harvested grain to enter the grain tank.
6. Select Stop (C) to stop the calibration.
Record the current calibration factor,
date/time, and harvested weight.
NOTE: Until calibration sample load is
weighed, the operator may continue to
harvest and then return to this screen to
enter the weight value.
7. Weigh the harvested grain and enter the
Scale Weight (E).
Record the scale measured weight and new
calibration factor.
Low Flow Calibration Process
NOTE: The Following steps should only be performed after a Standard Calibration procedure has been
successfully completed.
1. From the Setup menu, select the Low Flow
(B) calibration mode.
2. Once ready to harvest press Start (C) and
begin harvesting.
NOTE: Operate the machine at 1/2 to 2/3
the ground speed of your standard
calibration on reasonably level ground and
of uniform yield.
3. Adjust harvest speed until the indicator on
the Mass Flow is within the target change.
4. After harvesting 3,000 – 5,000 pounds of
crop, stop the combine and allow all
harvesting grain to enter the grain tank.
5. Select Stop (C) to stop calibration.
6. Weigh the harvested grain and enter the
Scale Weight (E).
The monitor will adjust the Flow Comp
Number for low flow harvesting.
Harvest Monitor Moisture Correction
High moisture crop requires a moisture calibration. The following steps should be followed to adjust your
combine’s moisture settings to match an elevator moisture reading. A moisture reading can be captured from
the home page load total.
1. From the Harvest Monitor setup page,
select Moisture (E).
2. Select Moisture Correction (A)
3. Enter the correct Moisture Correction (C)
+/_ to match the elevator reading.
4. Select the Home button.