New Holland T4.75F Operator's Manual page 122

Draft Control
To work in draft control mode, set the position/draft sensi-
tivity knob (1) to an intermediate position, bearing in mind
that by turning it clockwise the frequency and extent of
corrective interventions caused by tractor draft variations
on the implement will increase.
With the knob (1) fig. 8 turned fully clockwise (completely
to the right, the decal shows two horizontal arrows point-
ing in opposite directions), a more sensitive adjustment
will be obtained, therefore variations in ground density
will result in more frequent interventions by the hydraulic
system and consequent corrections in height above the
ground of the lower lift arms and the connected imple-
ment.
Vice versa, by gradually turning the knob counter-clock-
wise (to the left, the decal shows two vertical arrows point-
ing towards each other) the extent and frequency of inter-
ventions will be progressively reduced
Now, turning the up/down control knob (1) fig. 9 anticlock-
wise, lower the implement to determine the working depth.
To lift and lower the implement, use the fast up/down
switch (2) fig. 9; when lifting, the implement will be posi-
tioned at the height previously set with the lift limit control,
whereas when lowering it will go into the previously set
work position.
Operation in float mode
To work in float mode, position the controls as described
below:
• Turn the control knob (1) fig. 9 completely anticlockwise
(greatest working depth);
• Turn the position/draft sensitivity control knob (1) fig. 8
fully clockwise (greatest sensitivity).
NOTE: In the event that the position selected with the
knob (1) fig. 9 requires a movement beyond the limits set
with the upper and lower travel limit knobs (1) and (3) fig.
1, lower arm travel will stop at the limits set.
Each time an implement setting operation is carried out,
the lift will automatically adjust the working depth of the
implement according to ground conditions.
6 - WORKING OPERATIONS
6-24
8
MOIL13TR00576AA
9
MOIL13TR00819AA