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OPERATION
TW120 01/11 Operation Section 4-5
© 2011 Alamo Group Inc.
OPERATION
2.3 Tractor Horsepower
The power required to operate a mower is determined by the tractor PTO horsepower. For most mowing
conditions, the TW120 lift mower requires a tractor with at least 60 HP and the semi-mount and pull type
mower require at least 50 HP. Operating the mower with a tractor that does not have adequate power may
damage the tractor engine. Exceeding 90 HP may cause mower damage by overpowering the unit in heavy
cutting conditions.
2.4 3-Point Hitch
Lift Type Mower-The tractor 3-point hitch must be
rated to lift at least 1818 lbs.
The Model TW120 is designed to be mounted on a
tractor with CATII or CATIII 3-point or CATII or
CATIII Quick Hitch.
Refer to the tractor operator’s manual for the
category of the tractor being used. If the hitch does
not conform to ASABE dimensions, the mower may
not fit or raise properly. Consult an authorized
dealer for possible modification procedures to
mount non-conforming hitches.
Depending on the hitch category, certain size pins
are used to attach the mower to the tractor. Quick
Hitch requires 1-7/16 diameter lower pin and 1-1/4
diameter upper pin. CATII hitches require 1-1/8
lower pins and 1 inch upper pins. CATIII hitches
require 1-7/16 lower pins and 1-1/4 upper pin
diameters.
Our 3-point Quick Hitch is designed to connect to a
Quick-Attach coupler making mounting and
dismounting your mower easier. The 3-Point Quick
Hitch is also designed to connect the mower to a
tractor’s 3-point linkage without the use of a Quick-
Attach Coupler.
2.2 Tractor Safety Devices
If transporting or operating the tractor and implement near a public roadway, the tractor must be equipped with
proper warning lighting and a Slow Moving Vehicle (SMV) emblem which are clearly visible from the rear of
the unit. Lights and a SMV emblem must be equipped directly on implements if the visibility of the tractor
warning signals are obscured.
Maintain all manufacturer equipped safety shields and guards. Always replace shields and guards that were
removed for access to connect, service, or repair the tractor or implement. Never operate the tractor PTO
with the PTO master shield missing or in the raised position. OPS-U- 0004