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3.3 Tractor Hydraulics
The cutter deck and wings are raised and lowered with hydraulic cylinders operated by the tractor hydraulic
pump. The tractor operating the cutter must have two double acting hydraulic circuits operating at 2500 PSI
(17.2 MPa). One circuit for the operation of the phasing system and one for the wing lift system.
3.4 Front End Weight
A minimum of 20% total tractor weight must be maintained on the tractor front end at all times. Front end
weight is critical to maintain steering control and to prevent the tractor from rearing up while driving. If the
front end is too light, add weight until a minimum of 20% total weight is reached on the front tires. Front
weights and weight carriers can be purchased through an authorized tractor dealership. OPS-U-0005
3.5 Power Take Off (PTO)
This mower is designed to operate at a PTO speed of 1000 RPM. 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 1000 RPM will have a 1-3/8" 21-spline shaft or a 1-3/4" 20 spline 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. An
authorized tractor dealer can provide the over-running clutch and its installation if needed. OPS-U- 0006_F
DO NOT use a PTO adapter to attach a non-matching Implement driveline to a Tractor PTO.
Use of an adapter can double the operating speed of the Implement resulting in excessive
vibration, thrown objects, and implement failure. Adapter use will also change the working
length of the driveline exposing unshielded driveline areas. Serious bodily injury and/or
equipment failure can result from using a PTO adapter. Consult an authorized dealer for
assistance if the Implement driveline does not match the Tractor PTO.
Never operate the Tractor and Mower if the Implement input driveline is directly connected
to the Tractor transmission. Tractor braking distances can be substantially increased by the
momentum of the rotating Mower blades driving the Tractor transmission even though the
Tractor clutch has been disengaged. Install an over running clutch between the Tractor
PTO and the Mower driveline to prevent this potentially dangerous situation.
3.6 Tire Spacing
Tractor tires should be set a minimum of 60" (1.5
m) apart measured from inside of tire to inside of
tire, or maximum width possible. Refer to the
tractor
Operator's
Manual
authorized dealer for instructions to change
tractor tire spacing. OPS-R-0062
FX-530 06/21
© 2021 Alamo Group Inc.
OPERATION
or
consult
an
Operation Section 4-6
(S3PT-14)
(S3PT-16)
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