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OPERATION
Operation Section 4-6
OPERATION
© 2004 Alamo Group Inc.
SR10M/SR15M 10-01
The horsepower required to operate the mower depends on several operating factors including the vegetation to
be cut, terrain condition, operator experience, condition of the mower and tractor, and others. For most mowing
conditions, the SR10 mower requires a tractor with a minimum of 40 HP and the SR15 mower requires a tractor
with a minimum of 50 HP. Operating the mower with a tractor that does not have adequate power may damage
the tractor engine. Exceeding 100 HP for a 540 RPM drive and 140 HP for a 1000 RPM drive may cause mower
damage by overpowering the unit in heavy cutting conditions.
2.3 Tractor Horsepower
2. TRACTOR REQUIREMENTS
Tractor Requirements and Capabilities
ASAE approved Roll-Over Protective Structure (ROPS) or ROPS cab and seat belt.
Tractor Safety Devices...........................……… Slow Moving Vehicle (SMV) emblem, lighting,
PTO master shield
Tractor Horsepower -Minimum ......................... SR10 40 HP; SR15 50 HP
-Maximum…….................. 540 RPM Unit - 100 HP; 1000 RPM Unit 140 HP
Drawbar......................................................... Set length according to operating speed of the mower and
driveline type, rated to carry weight of the mower,
safety chain attachment point
Hydraulics...................................................... Minimum of 1 hydraulic port (extra 3-spool valve required).
Minimum 2 ports, 3 ports recommended if additional
3-spool control valve is not used.
Front End Weights..…………........................... As needed to maintain 20% weight on front axle
Power Take Off.....................…….................... Operating speed and shaft size depends on operating speed
and driveline type of the mower.
Tire Wheel Spacing..............…….................... Set tires minimum width of 60” from inside to inside of tires.
2.2 Tractor Safety Devices
2.1 ROPS and Seat Belt
A Roll-Over-Protective-Structure (ROPS) and seat belt are essential to protect the operator from falling off the
tractor, especially during a roll over where the driver could be crushed and killed. The ROPS and seat belt must
be used in conjunction with one another. Only operate the tractor with the ROPS in the raised position and seat
belt fastened. Tractor models not equipped with a ROPS and seat belt should have these life saving features
installed by an authorized tractor dealer.
Operate this Equipment only with a Tractor equipped with an approved roll-over-
protective system (ROPS). Always wear seat belts. Serious injury or even death
could result from falling off the Tractor--particularly during a turnover when the
operator could be pinned under the ROPS. (SG-7)
WARNING!
If transporting or operating the tractor and mower 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 mower. Never operate the tractor PTO with the
PTO master shield missing or in the raised position.
The tractor used to operate the mower must have the power capacity to lift, pull, and operate the Power Take Off
(PTO) at the mower’s rated speed while traveling at a ground speed between 2 and 5 MPH. Operating the
mower with a tractor that does not meet the following requirements may cause tractor or mower damage and be
a potential danger to the operator and passersby.