Bush Hog HT419H, Operator'S Manual

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OPERATION
HT419H 05/22 Operation Section 4-19
© 2022 Alamo Group Inc.
OPERA
TION
10.3 PTO RPM and Ground Speed
Ground speed will depend upon the height, type, and density of vegetation. Recommended speed for efficient
performance is 5 mph. Operate the implement at its 350-450 PTO RPM (540 MAX) rated speed to maintain
good operation. 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 ground speed. Make sure that the implement is operating
at its full rated speed before entering into use. If it becomes necessary to temporarily regulate engine speed,
increase or decrease the throttle gradually.
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 implement and most efficient tractor operation. As
the severity of conditions increase, the ground speed should be decreased by selecting a lower gear to
maintain the proper operating PTO speed.
OPS-HT-0025
10.4 Engaging the Power Take Off (PTO)
Before engaging the PTO, make certain that the area is clear of bystanders and passersby. The implement
must be completely lowered and the deck positioned at a safe operating height. NEVER engage the PTO with
the implement in the raised position.
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 350-450 RPM (540 MAX).
If you hear unusual noises or see or feel abnormal vibrations, disengage the PTO immediately. Inspect the
implement to determine the cause of the noise or vibration and repair the abnormality. OPS-HT- 0017