MacDon CASE IH FlexDraper FD225, Manual

Page: 153 / 560

MAC215986
129
Revision A
1029211
A
Figure 3.154: Cutting on the Ground
1. Set the float for cutting on the ground as follows:
a. Ensure the header float locks are disengaged. For
instructions, refer to
Locking/Unlocking Header Float,
page 140 .
b. Lower the feeder house using the combine header
controls until float indicator (A) reaches the desired
float value (cutterbar ground force). Set the float
indicator initially to float value 2 and adjust as
necessary.
2. Set the float for cutting off the ground as follows:
a. Adjust the contour wheels. For instructions, refer to
3.9.1 Cutting off Ground, page 120 .
b. Note the float value on the float indicator and maintain
this value during operation (disregard minor
fluctuations on the indicator).
Checking and Adjusting Header Float
The header is equipped with a suspension system that floats the header over the ground to compensate for ridges,
trenches, and other variations in ground contour. If the header float is not set properly, the cutterbar may scoop dirt or
leave uncut crop. If the float setting is not satisfactory, the float will need to be inspected and adjusted.
IMPORTANT:
Do NOT use the float module springs to level the header.
Use the following guidelines when adjusting the float:
•
Set the header float as light as possible, but not so light that the header bounces when the combine is moving. This will
help prevent knife breakage, soil pushing, soil build-up at the cutterbar in wet conditions, and excessive wear to the
skid plates.
•
To prevent the header from bouncing excessively and cutting unevenly when the float is light, operate the combine at a
lower ground speed.
•
To cut crop while the header is above ground level, use the stabilizer wheels in conjunction with the header float. This
will minimize bouncing at the header ends and will help regulate the cut height. For instructions, refer to
Adjusting
Stabilizer Wheels, page 121 .
DANGER
To prevent injury or death from the unexpected start-up of the machine, always stop the engine and remove the key
from the ignition before leaving the operator
’
s seat for any reason.
NOTE:
If adequate header float cannot be achieved using all of the available adjustments, change the float spring configuration.
For instructions, refer to .
To check and adjust the float settings, do the following:
OPERATION