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OPERATION
LJ60/72 02-02 Operation Section 4-24
OPERATION
© 2004 Alamo Group Inc.
10.4 PTO RPM and Ground Speed
Ground speed is achieved by transmission gear selection and not by the engine operating speed. The operator
may be required to experiment with several gear range combinations to determine the best gear and range which
provides the most ideal performance from the cutter and most efficient tractor operation. As the severity of cutting
conditions increase, the ground speed should be decreased by selecting a lower gear to maintain the proper
operating PTO speed.
10.3 Engaging the Power Take Off (PTO)
Before engaging the PTO, make certain that the area is clear of bystanders and passersby. Set the tractor engine
speed at approximately 1,000 rpm before engaging the PTO. Shift the PTO control to the on position, and slowly
increase the engine speed until the PTO is operating at 540 or 1000 rpm. If you hear unusual noises or see or feel
abnormal vibrations, disengage the PTO immediately. Inspect the cutter to determine the cause of the noise or
vibration and repair the abnormality.
Do not let the Blades turn when the Mower deck is raised for any
reason, including clearance or for turning. Raising the Mower deck
exposes the cutting blades which creates a potentially serious hazard
and could cause serious injury or even death from objects thrown
from the blades. (SRM-7)
DANGER!
Ground speed for cutting will depend upon the height, type, and density of vegetation to be cut. Recommended
speed for efficient cutter performance is between 1 and 3 mph. Operate the cutter at its rated 540 or 1000 rpm
PTO speed to maintain blade speed and produce a clean cut. Refer to the tractor operator’s manual or the tractor
instrument panel for the engine speed and gear to provide the required PTO and desired speed. Make sure that
the cutter is operating at its full rated speed before the blades make contact with vegetation. If it becomes
necessary to temporarily regulate engine speed, increase or decrease the throttle gradually.
Do not put hands or feet under Mower decks. Blade contact can result
in serious injury or even death. (SGM-9)
DANGER!
WARNING!
Do not exceed the rated PTO speed for the Implement. Excessive PTO speeds can
cause Implement driveline or blade failures resulting in serious injury or death. (SG-26)