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3.7 Power Take Off (PTO)
The implement is designed to operate at a PTO speed of 540 RPM. Most tractors operate at either 540, or a
combination of 540 and 1000 RPM PTO speeds. The operating speed of the implement 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 1-3/8" diameter 6-spline shaft and 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.
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 blade 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.
(S3PT-14)
Never operate the Tractor and unit if the implement main driveline is directly connected to
the Tractor transmission. Tractor braking distances can be substantially increased by the
momentum of the rotating implement driving the Tractor transmission even though the
Tractor clutch has been engaged.
and the implement driveline to prevent this potentially dangerous situation.
3.8 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 or consult an authorized
dealer for instructions to change tractor tire
spacing. OPS-R- 0062
4. GETTING ON AND OFF THE TRACTOR
Before getting onto the tractor, the operator must read and completely understand the implement and tractor
operator manuals. If any part of either manual is not completely understood, consult an authorized dealer for
a complete explanation. OPS-U- 0007
SRW1400 08/16
© 2016 Alamo Group Inc.
OPERATION
Install an over running clutch between the Tractor PTO
Operation Section 4-6
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