MacDon CA20 Operators Manual - Manual (Page 63)

OPERATION
Form 169009 61 Model Year - 2009
f. If excessive force is required, or the header
does not return to its original position, the float
requires adjusting. Refer to following Section
7.3.5.3, Adjusting Header Float – Normal, or
7.3.5.4, Adjusting Header Float – Cutterbar On
Ground.
7.3.5.3 Adjusting Header Float - Normal
a. If adjusting FD70 FlexDraper header float,
ensure both wing float locks are engaged.
b. Ensure both header float lock levers are down
(UNLOCK).
c. Tighten bolts (D) at both sides of adapter to
increase float (lightens the header).
d. Loosen bolts to decrease float (increases
header weight).
IMPORTANT
Turn each bolt pair equal amounts.
e. The float is properly adjusted when:
• for 30, 35, and 40 ft single knife;
both sides of the header are adjusted to the
same weight (approx. 75 lbf (334 N).
• for 40 ft double knife;
RH side is slightly heavier (loosen RH side
adjuster bolts (D) by 2 turns).
IMPORTANT
Proper float adjustment in accordance
with the above is critical for maintaining
proper wing balance when cutting on the
ground.
LOCK
UNLOCK
LOCK
D
LEFT SIDE
D
RIGHT SIDE