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OPERATION
RHD 02/11 Operation Section 4-7
© 2011 Alamo Group Inc.
OPERATION
Before attaching mower to tractor, it will be
necessary that each tractor lower hitch arms have
freedom of movement that the mower is completely
independent of tractor movement. This will allow
the mower to pivot sideways as well as move
vertically.
Some tractors provide this “float” by means of an
optional slot in the lower end of each lift link, others
by lift check chains which can be made telescopic
by changing the position of the pins in the links.
Failure to provide “float” may result in failure of the
cutterhousing and bearings in the roller, thus
voiding the mower warranty. Should your tractor not
have a built “float” option, a flexible check chain
assembly (optional equipment) will be required. See
Figure ASMP-FL-0019.
On all centered mowers, two flexible check chain assemblies will be necessary to provide “float” to each lift
link.
On all offset mowers, one flexible check chain assembly will be necessary to provide “float” to the lift link on the
same side that the mower is offset. The other lift link should be the adjustable stiff link furnished with the tractor.
3.5 Front End Weight
Maintain a minimum of 20% total tractor weight on the tractor front end at all times. Front end weight is critical
to maintain steering ability and to prevent the front end from rearing up. Consult your authorized tractor dealer
for front weights and carriers.
3.6 Power Take Off (PTO)
Only operate the mower on a tractor equipped to operate at 540 rpm PTO speed. Tractors operating at 540
rpm will have a 1-3/8” diameter 6-spline PTO shaft stub. Refer to the tractor operator’s manual for operating
the PTO at the proper 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. Consult an
authorized tractor dealer to purchase and install an over-running clutch 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)