MacDon FD75 OM - Manual (Page 115)

OPERATION
Calibrating Feeder House Speed (John Deere 70 Series)
Before calibrating the Auto Header Height system, you must calibrate the combine’s feeder house speed. See the
combine operator’s manual for instructions.
Calibrating the Auto Header Height System (John Deere 70 Series)
NOTE:
The feeder house speed must be calibrated before you calibrate the Auto Header Height system. Refer
to the combine operator’s manual for instructions.
NOTE:
Changes may have been made to the combine controls or display since this document was published.
Refer to the combine operator’s manual for updates.
To calibrate the Auto Header Height System, follow these steps:
1. Rest header on downstops, and unlock adaptor float.
2. Put wings in locked position.
3. Start the combine.
4. Press the fourth button on the top of the monitor (A) to
select the icon showing an open book with a wrench
on it (B).
5. Press the top button (A) a second time to enter
diagnostics and calibration mode.
Figure 4.120: Combine Display
6. Select the option HEADER in the box (A) by scrolling
down to the box using the scroll knob and check
mark button.
Figure 4.121: Combine Display
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