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3.8 Power Take Off (PTO)
The implement is shipped from the factory with either a 540 RPM gearbox or a 1000 RPM gearbox and
reducer set. Identify which option your snowblower is equipped with before proceeding. Most tractors operate
at either 540 RPM, 1000 RPM or a combination of the two 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 implement. An authorized
tractor dealer can provide the over-running clutch and its installation if needed.
DO NOT run a snowblower equipped with a 540 RPM gearbox on a 1000 RPM PTO.
Running the implement at the incorrect speed can result in excessive vibration, thrown
objects, and auger, fan and implement failure. Consult an authorized dealer for assistance if
the implement driveline does not match the tractor PTO.
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)
Always disconnect the main PTO Driveline from the Tractor before performing service on
the Snow Blower.
connected and running. The Fan, Auger or Drivelines could turn without warning and cause
immediate entanglement, injury or death.
3.9 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
SDX-102 05/19
© 2019 Alamo Group Inc.
OPERATION
Never work on the Snow Blower with the Tractor PTO driveline
(SSB-8)
Operation Section 4-7
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