MacDon FD75, Operator'S Manual

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Revision B
Calibrating Maximum Stubble Height
The height at which the combine
’
s harvested area counter stops or starts counting may need to be calibrated for the auto
header height control (AHHC) system to work correctly.
Set the maximum stubble height to a value that will never be reached while cutting. The area counter will stop counting
harvested area when the header is above the programmed height, and will begin counting when the header is below the
programmed height.
IMPORTANT:
•
If value is set too low, the harvested area may not be counted since the header can be raised above this threshold while
the combine is harvesting.
•
If value is set too high, the area counter may not stop counting even when the header is raised and the combine is no
longer harvesting because the header height is still below the set height threshold.
DANGER
Check to be sure all bystanders have cleared the area.
1003774
Figure 4.287: New Holland Calibration Dialog Box
1. Select the MAXIMUM STUBBLE HEIGHT calibration dialog
box. As you proceed through the calibration process, the
display will automatically update to show the next step.
1003775
Figure 4.288: New Holland Calibration Dialog Box
2. Move the header to the correct position using the header
up or down control switch on the multifunction handle.
3. Press ENTER to continue.
4. Press ENTER or ESC to close the calibration page.
AUTO HEADER HEIGHT CONTROL