MacDon CA20 Operators Manual - Manual (Page 64)

OPERATION
Form 169009 62 Model Year - 2009
7.3.5.4 Adjusting Header Float – Cutterbar On
Ground
Set the header float as follows when working
with the cutterbar on the ground.
a. Set center link to mid-range position (B to C on
float/angle indicator (A) if installed).
b. Adjust float with the adjuster bolts (B) so that
the washer (C) behind the down-stop nut is
loose, then back off the adjuster bolts (B) two
turns.
c. Adjust feeder house height while watching float
indicator (D) to set cutterbar down force
(normally 2 on indicator). Lower feeder house
height to increase ground pressure (decrease
float). Indicator reading will increase.
NOTE
Installation of the auto header height
controller attachment is recommended for
cutting on the ground if the combine is
equipped to interface with it.
d. When cutting on ground, adjust header angle to
achieve desired stubble height. AHHC
indicates A for shallowest angle/higher stubble,
D for steepest angle/lower stubble.
e. In rocky fields, adjust skid shoes down to raise
guards when operating at flattest header angle
to minimize scooping rocks.
f. Increase header height or decrease header
angle to minimize pushing soil.
NOTE
Header angle and reel fore-aft position
changes do not significantly affect header
flotation (down force).
A
D
B
LEFT SIDE
B
RIGHT SIDE
C