MacDon FFT FD75 Assembly Instructions Manual page 212

Flexdraper combine header with ca25 combine adapter
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2. Once HEADER HEIGHT RESUME and AUTO
HEADER CONTROL are turned ON, use buttons 2 (B)
and 3 (C) on your hydrostatic lever for active
header control.
NOTE:
Button 1 (A) is reserved for AUTO HEIGHT RESUME
which will return header to a certain height, but will not
automatically compensate for ground variation.
NOTE:
To use buttons, combine must be running, AUTO
HEADER HEIGHT SENSING must be ON, and header
switch and feeder house must be engaged.
3. Push button you would like to use, and header will
position itself at default height.
4. Adjust header to desired ground pressure by turning
your auto header control dial located at upper right
corner of console (A). Once you have set your desired
ground pressure, auto header height will now maintain
constant float at this ground pressure (it will lower or
raise feeder house to compensate for changes in
ground height).
NOTE:
Auto header height is designed to optimize your float
when cutting on ground. It does not function when
cutterbar is off ground.
NOTE:
The ideal ground pressure, in most cases, is one number
of separation on AHHC from having header fully
suspended off ground (B) to just resting on ground (A).
Operating with heavier pressures can wear cutterbar
wearplate prematurely.
5. The additional buttons (2 or 3) on hydrostatic lever are
used for two different ground pressure settings. The
header control dial on console will work for specific
button that was pushed to activate auto header height
control. Each time button is pushed, header will return
to that specific ground pressure.
214325
SETTING UP AUTO HEADER HEIGHT CONTROL
Figure 5.132: Hydrostatic Lever
Figure 5.133: Auto Header Control Dial
Figure 5.134: Float Indicator Box
202
Revision A

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