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Case IH MD72 - Page 24

Case IH MD72
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SECTION 00 -- GENERAL INFORMATION -- CHAPTER 2
00-2
DANGER
To prevent injury to bystanders, this mower is
not intended for roadside or municipal mowing.
This mower is intended for agricultural use only.
Failure to comply will result in death or serious
injury.
M1215
WARNING
A tractor with an enclosed cab is recommended
when operating a rotary disc cutting machine.
Failure to comply could result in death or serious
injury.
M1183
After the disc mower has been lubricated, attached to
the tractor, and adjusted correctly, it is ready for field
operation. Refer to the other sections of this manual
for the above information.
Lower the cutter bar onto the ground and position the
tractor hydraulic valve in the “Float” position. Ensure
that the up-stop channel is positioned over the lift
cylinder rod, and the cutter bar curtain is folded
forward over the cutter bar. Refer to the “General
Information” section of this manual for further
information.
WARNING
Never operate the mower with the curtain folded
rearward in the transport position. Failure to
comply could result in death or serious injury.
M1210
NOTICE: Do not engage the PTO with the tractor
running at high speed or the mower driveline may be
damaged.
Slowly engage the PTO before the unit is moved up
to the standing material. Be sure the tractor PTO is
running at 540 rpm before starting to cut.
NOTICE: Operating at excessive PTO speeds will
shorten the machine life and cause structural failure.
WARNING
Loose stones and foreign objects can be de-
flected toward the operator on machines with
rotary discs. Keep all curtains and shields in
place. Failure to comply could result in death or
serious injury.
M1211
OPENING FIELDS
Fields can be opened the same way with a disc
mower as with sickle bar-type mowers by cutting the
back swath first; cut backwards around the field,
running the cutter bar along the edge of the field.
After the backswath is cut, reverse direction and cut
around the field in a clockwise direction; reduce
ground speed to pick up most of the crop run down by
the tractor tires on the backswath.
FIELD CUTTING
1. To cut square corners:
Start turning the tractor as the rear wheels
approach the edge of the standing crop; turn the
tractor sharply in order to keep the cutter bar in the
crop. Using the right wheel brake on the tractor
may allow a sharper turn, but may also gouge the
ground.
It may be necessary to slow the ground speed to
turn corners, although it is almost impossible to
make clean square corners. Corners will tend to
stretch out as cutting continues. This operation
will not cause plugging as with other types of
mowers.
After the field is cut, the corners may be cut out by
cutting from the center of the field to the corners to
mow any standing crop; the cutter bar will not plug
when cutting through previously cut material.
2. To cut oversquare corners:
Continue cutting in forward direction until the
cutter bar approaches the end of the corner; turn
the tractor sharply to the right, leaving the cutter
bar on the ground to finish cutting the corner.
The cutter bar can be left on the ground while
traveling back to the standing crop; the cutter bar
will not plug when cutting through previously cut
material.
NOTICE: Maintain full PTO speed when crossing
previously cut material, even if the cutter bar is raised
off the ground. Failure to do so may cause cutter bar
wrappage and plugging.

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