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2.3 Tractor Horsepower
The power required to operate a mower is determined by the tractor PTO horsepower. For most mowing
conditions the SQ84T is 30 HP. Operating the mower with a tractor that does not have adequate power may
damage the tractor engine. Exceeding recommended HP may cause mower damage by overpowering the unit
in heavy cutting conditions.
2.4 3-Point Hitch
The tractor 3-point hitch must be rated to lift at least
720lbs (SQ84T). These models are designed to be
mounted on a tractor CAT I - 3 Point Hitch.
Refer to the tractor operator's manual for the
category of the tractor being used. If the hitch does
not conform to ASABE CAT I dimensions, the
mower may not fit or raise properly. Consult an
authorized dealer for possible modification proce-
dures to mount non-conforming hitches.
Depending on the hitch category, certain size pins
are used to attach the mower to the tractor. CAT I
hitches require 7/8" lower and 3/4" upper diameter
hitch pins.
2.5 Power Take Off (PTO)
This mower is designed to operate at a PTO speed of 540. Most tractors operate at either 540, or a
combination of 540 and 1000 RPM PTO speeds. The operating speed of the mower and tractor can be
determined by the number of splines on the driveline yoke and PTO output shaft. Those operating at 540
RPM will have a 6-spline shaft and those operating at 1000 RPM will have a 21-spline shaft. Note: The
mower will not operate on tractors equipped with a 1000 RPM 21-spline or 1000 RPM 20-spline, 1-3/4" shaft.
Refer to the tractor owner's manual for instructions to change PTO speeds on models that operate at more
than one speed.
If operating an older model tractor where the tractor's transmission and PTO utilize one master clutch, an
over-running clutch must be used between the PTO output shaft and the driveline of the mower.
authorized tractor dealer can provide the over-running clutch and its installation if needed. OPS-R- 0066
SQ84T
12/21
© 2021 Alamo Group Inc.
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