909793/BP0805 18 Printed in U.S.A.
CHAPTER 6
OPERATION
FIRST TIME OPERATION
WARNING
If this is the first time you are using the ma-
chine, DO NOT start, operate or service it until
you have read and understand the contents of
this manual.
NORMAL OPERATION
CAUTION
BEFORE operating the disc mower, review
and comply with ALL SAFETY recommenda-
tions set forth in the SAFETY chapter of this
manual.
WARNING
DO NOT use the DM1162 or DM1165 mower for
roadside cutting. DO NOT operate near
people.
EMERGENCY SHUTDOWN
If crop material is clogging the cutterbar or a foreign
object enters the cutting area, STOP cutting material
IMMEDIATELY by disengaging the tractor PTO and
stopping forward movement. Then, exercise the MAN-
DATORY SAFETY SHUTDOWN PROCEDURE
(page 8) BEFORE leaving the tractor seat to remedy the
problem.
GROUND SPEED
The disc mower can be operated in a wide range of
ground speeds depending on crop conditions and
terrain. Any change in ground speed should be made by
changing tractor gears and NOT by increasing or
decreasing tractor engine RPM.
START- UP
WARNING
BE SURE ALL factory- installed guards and
shields are in place and properly secured BE-
FORE starting the tractor engine. DO NOT op-
erate near people. The protective cover will
contain most debris and foreign objects but
may NOT stop all such material.
When changing the cutterbar from the transport to the
normal operating position and BEFORE engaging the
PTO, ALWAYS allow several minutes for the oil in the
cutterbar to spread. To avoid unnecessary strain on the
disc mower components, ALWAYS engage the tractor
PTO slowly and with the tractor engine at less than half
throttle. Bring the unit to PTO speed BEFORE starting
to cut.
IMPORTANT: Always operate the mower at 540
rpm PTO speed! Operating above 540 rpm could
cause excessive vibration, wear and possible
component failure. Operating the unit below 540
rpm will increase the chances of plugging.
UNPLUGGING
In certain crop conditions, it is possible for the disc
mower to plug. When plugging occurs, the drive belts
will slip.
To clear a plugging condition in the area of the discs:
1. Disengage the PTO.
2. Raise the mower several inches.
3. Exercise the MANDATORY SAFETY SHUT-
DOWN PROCEDURE (page 8) and apply the
tractor parking brake.
4. Carefully clear the plug from the cutterbar area.
If the plugging occurs frequently, refer to the Trouble-
shooting chapter for additional directives.
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