Published 05/05Effective Serial No. TW60-14790 through Current Part NO. 00759048
Effective Serial No. TW72-24620 through Current
OPERATOR’S MANUAL
This Operator's Manual is an integral part of the safe operation of this machine and must
be maintained with the unit at all times. READ,
and Operation Instructions contained in this manual before operating the equipment. C01-
Cover
UNDERSTAND, and FOLLOW the Safety
RHINO®
1020 S. Sangamon Ave.
Gibson City, IL 60936
800-446-5158
Email: parts@servis-rhino.com
All implements with moving parts are potentially hazardous. There is no substitute for a cautious, safe-minded
operator who recognizes the potential hazards and follows reasonable safety practices. The manufacturer has
designed this implement to be used with all its safety equipment properly attached to minimize the chance of accidents.
BEFORE YOU START!! Read the safety messages on the implement and shown in your manual. Observe the
rules of safety and common sense!
WARRANTY INFORMATION:
Read and understand the complete Warranty Statement found in this Manual. Fill out the Warranty Registration
Form in full and return it to within 30 Days. Make certain the Serial Number of the Machine is recorded on the Warranty Card and on the Warranty Form that you retain
Page 3
In order to reduce accidents and enhance the safe operation of mowers, Alamo Group Ag Division, in
cooperation with other industry manufacturers has developed the AEM/FEMA Industrial and Agricultural Mower Safety Practices video and guide book.
The video will familiarize and instruct mower-tractor operators in safe practices when using industrial
and agricultural mowing equipment. It is important that Every Mower Operator be educated in the operation of their mowing equipment and be able to recognize the potential hazards that can occur while operating a mower. This video, along with the mower operator’s manual and the warning messages on the
mower, will significantly assist in this important education.
Your Authorized Alamo Ag Dealer may have shown this video and presented you a DVD Video when you
purchased your mower. If you or any mower operator have not seen this video, Watch the Video,Read
this Operator’s Manual, and Complete the Video Guidebook before operating your new mower. If you
do not understand any of the instructions included in the video or operator’s manual or if you have any
questions concerning safety of operation, contact your supervisor, dealer or Alamo Group Ag.
If you would like a VHS video tape of the video, please email AEMVideo@alamo-group.com or Fax
AEM VHS Video at (830) 372-9529 or mail in a completed copy of the form on the back of this page to
AEM VHS Video 1502 E Walnut Street, Seguin, TX 78155. and request the VHS video version. Please
include your name, mailing address, mower model and serial number.
Every operator should be trained for each piece of equipment (Tractor and Mower), understand the
intended use, and the potential hazards before operating the equipment.
Page 4
Alamo Group Ag. Division is willing to provide
one (1) AEM Mower Safety Practices Video
Please Send Me:VHS Format – AEM/FEMA Mower Operator Safety Video
General Safety Instructions and Practices .......................................................................................................... 1-2
Operator Safety Instructions and Practices ........................................................................................................ 1-3
Equipment Operation Safety Instructions and Practices.....................................................................................1-5
Connecting or Disconnecting Implement Safety Instructions and Practices ..................................................... 1-11
Transporting Safety Instructions and Practices ................................................................................................ 1-12
Maintenance and Service Safety Instructions and Practices ............................................................................ 1-14
Storage and Parking Safety Instructions and Practices ....................................................................................1-16
Concluding Safety Instructions and Practices................................................................................................... 1-16
ROPS and SEAT BELT4-5
Tractor Safety Devices4-5
Tractor Horsepower4-6
3-Point Hitch4-6
Front End Weight4-6
Power Take Off (PTO)4-7
GETTING ON AND OFF THE TRACTOR .......................................................................................................... 4-7
Boarding the Tractor4-8
Dismounting the Tractor4-8
STARTING THE TRACTOR ............................................................................................................................... 4-9
CONNECTING THE MOWER TO THE TRACTOR ............................................................................................ 4-9
SETTING THE MOWER ................................................................................................................................... 4-10
DRIVING THE TRACTOR AND IMPLEMENT ..................................................................................................4-20
Starting the Tractor4-21
Brake and Differential Lock Setting4-21
Raising the Mower4-22
Driving the Tractor and Mower4-22
Crossing Ditches and Steep Inclines4-23
OPERATING THE TRACTOR AND IMPLEMENT............................................................................................ 4-24
Foreign Debris Hazards4-25
Bystanders/Passersby Precautions4-25
Engaging the Power Take Off (PTO)4-26
PTO RPM and Ground Speed4-27
Operating the Mower4-27
Shutting Down the Implement4-31
DISCONNECTING THE MOWER FROM THE TRACTOR .............................................................................. 4-31
A safe and careful operator is the best operator. Safety is of primary importance to the manufacturer and
should be to the owner/operator. Most accidents can be avoided by being aware of your equipment, your
surroundings, and observing certain precautions. The first section of this manual includes a list of Safety
Messages that, if followed, will help protect the operator and bystanders from injury or death. Read and
understand these Safety Messages before assembling, operating or servicing this Implement. This
equipment should only be operated by those persons who have read the Manual, who are responsible and
trained, and who know how to do so safely and responsibly.
The Safety Alert Symbol combined with a Signal Word, as seen below, is used throughout this manual and on
decals which are attached to the equipment. The Safety Alert Symbol means: “ATTENTION! BECOME
ALERT! YOUR SAFETY IS INVOLVED!” The Symbol and Signal Word are intended to warn the owner/
operator of impending hazards and the degree of possible injury faced when operating this equipment.
SAFETY
READ, UNDERSTAND, and FOLLOW the following Safety Messages. Serious injury or
death may occur unless care is taken to follow the warnings and instructions stated in the
Safety Messages. Always use good common sense to avoid hazards.
Practice all usual and customary safe working precautions and above all---remember safety is
up to YOU
. Only YOU can prevent serious injury or death from unsafe practices.
The lowest level of Safety Message; warns of possible injury. Decals located on the Equipment
with this Signal Word are Black and Yellow
Serious injury or possible death! Decals are Black and Orange.
Imminent death/critical injury. Decals are Red and White.
(SG-1)
(SG-2)
Si no lee ingles, pida ayuda a alguien que si lo lea para que le traduzca las
medidas de seguridad.
Engine Exhaust, some of its constituents, and certain vehicle components contain or emit
chemicals known to the state of California to cause cancer and birth defects or other reproductive
harm.
(SG-30)
Operator Safety Instructions and Practices
The rotating parts of this machine continue to rotate even after the PTO has been turned off. The
operator should remain in his seat for 60 seconds after the brake has been set, the PTO
disengaged, the tractor turned off, and all evidence of rotation has ceased.
“Wait a minute...Save a life!”
Never crawl under a raised Implement supported solely by the Tractor 3-Point hitch. Release of
the control lever or mechanical failure will result in the Implement falling and possible injury or
death. Always securely block up the Implement before crawling underneath to perform repairs
and service.
(S3PT-19)
(S3PT-10)
SAFETY
ever operate the Tractor or Implement un
you have read and completely
understand this Manual, the Tractor Operator’s Manual, and each of the Safety
Messages found in the Manual or on the Tractor and Implement. Learn how to
stop the tractor engine suddenly in an emergency. Never allow inexperienced
or untrained personnel too operate the Tractor and Implement without
supervision. Make sure the operator has fully read and understood the manuals
prior to operation.
(SG-4)
The operator and all support personnel should wear hard hats, safety shoes,
safety glasses, and proper hearing protection at all times for protection from
injury including injury from items thrown by the equipment.
(SG-16)
PROLONGED EXPOSURE TO LOUD NOISE MAY CAUSE PERMANENT
HEARING LOSS! Tractors with or without an Implement attached can often be
noisy enough to cause permanent hearing loss. We recommend that you
always wear hearing protection if the noise in the Operator’s position exceeds
80db. Noise over 85db over an extended period of time will cause severe
hearing loss. Noise over 90db adjacent to the Operator over an extended
period of time will cause permanent or total hearing loss. NOTE: Hearing loss
from loud noise [from tractors, chain saws, radios, and other such sources close
to the ear] is cumulative over a lifetime without hope of natural recovery.
handling oil, solvents, cleansers, and any other chemical agent.
e manufacturers instructions when
(SG-22)
KEEP AWAY FROM ROTATING ELEMENTS to prevent entanglement and
possible serious injury or death.
(SG-24)
Never allow children to play on or around Tractor or Implement. Children can slip or fall off the
Equipment and be injured or killed. Children can cause the Implement to shift or fall crushing
themselves or others.
(SG-25)
NEVER use drugs or alcohol immediately before or while operating the Tractor
and Implement. Drugs and alcohol will affect an operator’s alertness and
coordination and therefore affect the operator’s ability to operate the equipment
safely. Before operating the Tractor or Implement, an operator on prescription
or over-the-counter medication must consult a medical professional regarding
any side effects of the medication that would hinder their ability to operate the
Equipment safely. NEVER knowingly allow anyone to operate this equipment
when their alertness or coordination is impaired.
Serious injury or death to the
operator or others could result if the operator is under the influence of drugs or
alcohol.
(SG-27)
onged operation may cause operator boredom and fatigue affecting safe operation. Take
scheduled work breaks to help prevent these potentially impaired operating conditions. Never
operate the Implement and Tractor in a fatigued or bored mental state which impairs proper and
safe operation.
se extreme caution when ge
(SG-32)
ng onto the Implement to perform repairs, maintenance and when
removing accumulated material. Only stand on solid flat surfaces to ensure good footing. Use a
ladder or raised stand to access high spots which cannot be reached from gound level. Slipping
and falling can cause serious injury or death.
Avoid contact with hot surfaces including hydraulic oil tanks, pumps, motors, valves and hose
connections. Relieve hydraulic pressure before performing maintenance or repairs. Use gloves
and eye protection when servicing hot components. Contact with a hot surface or fluid can cause
serious injury from burns or scalding.
DO NOT operate this Implement on a Tractor that is not properly maintained. Should a
mechanical or Tractor control failure occur while operating, immediately shut down the Tractor and
perform repairs before resuming operation. Serious injury and possible death could occur from
not maintaining this Implement and Tractor in good operating condition.
Avoid contact with hot surfaces of the engine or muffler. Use gloves and eye protection when
servicing hot components. Contact with a hot surface or fluid can cause serious injury from burns
or scalding.
(SG-38)
(SG-36)
Do not put hands or feet under mower decks. Blade Contact can result serious
injury or even death. Stay away until all motion has stopped and the decks are
securely blocked up.
(SGM-9)
Always keep a careful lookout and use extreme care when working around utility and municipal
obstructions. Never allow the Mower to contact any utility, municipal, or other type structure.
Clearly mark all mowing obstructions and consult local utility providers for a safe code of
operation.
(SPU-5)
Do not operate the implement while wearing loose fitting clothing. Entanglement of the clothin
with the rotating elements can result in serious injury or even death. Stay clear of all rotatin
elements at all times. (SSP-3)
Equipment Operation Safety Instructions and Practices
Never leave the Tractor and Implement unattended while the Implement is in the lifted position.
Accidental operation of lifting lever or a hydraulic failure may cause sudden drop of unit with injury
or death by crushing. To properly park the implement when disconnecting it from the tractor,
lower the stand and put the retaining pin securely in place, or put a secure support under the AFrame. Lower the implement carefully to the ground. Do not put hands or feet under lifted
components.
(S3PT-1)
SAFETY
se extreme care when lowering or unfo
are close by or underneath the wings. Allow ample clearance around the implement when folding
or unfolding the wings. Use extreme caution around buildings or overhead power lines.
This Implement is wider than the Tractor. Be careful when operating or transporting this
equipment to prevent the Implement from running into or striking sign posts, guard rails, concrete
abutments or other solid objects. Such an impact could cause the Implement and Tractor to pivot
violently resulting in loss of steering control, serious injury, or even death. Never allow the
Implement to contact obstacles.
(S3PT-12)
SAFETY
e sure you have adequate knowledge of the property you w
e working on. Take time to make
yourself aware of any area underground lines or cables. Contact with buried lines or cable could
result in serious injury or death.
(SBH-6)
Do not operate Mower if excessive vibration exists. Shut down PTO and the Tractor engine.
Inspect the Mower to determine the source of the vibration. If Mower blades are missing or
damaged replace them immediately. Do not operate the mower until the blades have been
replaced and the Mower operates smoothly. Operating the Mower with excessive vibration can
result in component failure and broken objects to be thrown outward at very high velocities. To
reduce the possibility of property damage, serious injury, or even death, never allow the Mower to
be operated with blades missing.
(SFL-4)
Operate this Equipment only with a Tractor equipped with an approved rollover-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)
BEFORE leaving the tractor seat, always engage the brake and/or set the
tractor transmission in parking gear, disengage the PTO, stop the engine,
remove the key, and wait for all moving parts to stop. Place the tractor shift
lever into a low range or parking gear to prevent the tractor from rolling. Never
dismount a Tractor that is moving or while the engine is running. Operate the
Tractor controls from the tractor seat only.
(SG-9)
Never allow children or other persons to ride on the Tractor or Implement.
Falling off can result in serious injury or death.
Never allow children to operate, ride on, or come close to the Tractor or
Implement. Usually, 16-17 year-old children who are mature and responsible
can operate the implement with adult supervision, if they have read and
understand the Operator’s Manuals, been trained in safe operation of the
tractor and Implement, and are physically large enough to reach and operate
the controls easily.
Do not mount the Tractor while the tractor is moving. Mount the Tractor only
when the Tractor and all moving parts are completely stopped.
Start tractor only when properly seated in the Tractor seat. Starting a tractor in
gear can result in injury or death. Read the Tractor operators manual for proper
starting instructions.
(SG-11)
(SG-12)
(SG-13)
SAFETY
Do not operate this Equipment with hydraulic oil or fuel leaking. Oil and fuel are
expensive and their presence could present a hazard. Do not check for leaks
with your hand! High-pressure oil streams from breaks in the line could
penetrate the skin and cause tissue damage including gangrene. To check for a
hose leak, SHUT the tractor ENGINE OFF and remove all hydraulic pressure.
Wear oil impenetrable gloves, safety glasses and use Cardboard to check for
evidence of oil leaks. If you suspect a leak, REMOVE the HOSE and have it
tested at a Dealer. If oil does penetrate the skin, have the injury treated
immediately by a physician knowledgeable and skilled in this procedure.
(SG-15)
Never run the Tractor engine in a closed building or without adequate ventilation. The exhaust
fumes can be hazardous to your health.
(SG-23)
Do not exceed the rated PTO speed for the Implement. Excessive PTO speeds can cause
Implement driveline or blade failures resulting in serious injury or death.
(SG-26)
Operate the Tractor and/or Implement controls only while properly seated in the Tractor seat with
the seat belt securely fastened around you. Inadvertent movement of the Tractor or Implement
may cause serious injury or death.
ng operation, place the transmission in the park pos
on, se
the parking brake, shut down all power, including the PTO and the engine and remove the key.
Wait until all rotating motion has stop before dismounting. (SG-39)
Do Not operate this equipment in areas where insects such as bees may attack you and/or cause
you to lose control of the equipment. If you must enter in such areas, use a tractor with an
enclosed Cab and close the windows to prevent insects from entering. If a tractor cab is not
available, wear suitable clothing including head, face, and hand protection to shield you from the
insects. Attacking insects can cause you to lose control of the tractor, which can result in serious
injury or death to you or bystanders. Never dismount a movingtractor.
(SG-40)
Mow only in conditions where you have clear visibility in daylight or with adequate artificial lighting.
Never mow in darkness or foggy conditions where you cannot clearly see at least 100 yards in
front and to the sides of the tractor and mower. Make sure that you can clearly see and identify
passersby, steep slopes, ditches, drop-offs, overhead obstructions, power lines, debris and
foreign objects. If you are unable to clearly see these type of items discontinue mowing.
(SGM-1)
There are obvious and hidden potential hazards in the operation of this Mower.
REMEMBER! This machine is often operated in heavy brush and in heavy
weeds. The Blades of this Mower can throw objects if shields are not properly
installed and maintained. Serious injury or even death may occur unless care
is taken to insure the safety of the operator, bystanders, or passersby in the
area. Do not operate this machine with anyone in the immediate area. Stop
mowing if anyone is within 100 yards of mower.
(SGM-2)
The rotating parts of this machine have been designed and tested for rugged use. However, the
blades could fail upon impact with heavy, solid objects such as metal guard rails and concrete
structures. Such impact could cause the broken objects to be thrown outward at very high
velocities. To reduce the possibility of property damage, serious injury, or even death, never allow
the cutting blades to contact such obstacles.
reme care should be taken when operating near loose objects such as
gravel, rocks, wire, and other debris. Inspect the area before mowing.
Foreign objects should be removed from the site to prevent machine damage
and/or bodily injury or even death. Any objects that cannot be removed must
be clearly marked and carefully avoided by the operator. Stop mowing
immediately if blades strike a foreign object. Repair all damage and make
certain rotor or blade carrier is balanced before resuming mowing.
any varied objects, such as wire, cable, rope, or chains, can become entangled in the operating
parts of the mower head. These items could then swing outside the housing at greater velocities
than the blades. Such a situation is extremely hazardous and could result in serious injury or
even death. Inspect the cutting area for such objects before mowing. Remove any like object
from the site. Never allow the cutting blades to contact such items.
ow at the speed that you can safely operate and control the tractor and mower. Safe mowing
speed depends on terrain condition and grass type, density, and height of cut. Normal ground
speed range is from 0 to 5 mph. Use slow mowing speeds when operating on or near steep
slopes, ditches, drop-offs, overhead obstructions, power lines, or when debris and foreign objects
are to be avoided.
(SGM-7)
Avoid mowing in reverse direction when possible. Check to make sure there are no persons
behind the mower and use extreme care when mowing in reverse. Mow only at a slow ground
speed where you can safely operate and control the tractor and mower. Never mow an area that
you have not inspected and removed debris or foreign material.
Do not mow with two machines in the same area except with Cab tractors with the windows
closed.
(SGM-11)
(SGM-6)
(SGM-8)
SAFETY
Follow these guidelines to reduce the risk of equipment and grass fires while
operating, servicing, and repairing the Mower and Tractor:
-Equip the Tractor with a fire extinguisher in an accesible location.
-Do Not operate the Mower on a Tractor with an underframe exhaust.
-Do Not smoke or have an open flame near the Mower and Tractor.
-Do Not drive into burning debris or freshly burnt areas.
-Ensure slip clutches are properly adjusted to prevent excessive slippage and
plate heating.
-Never allow clippings or debris to collect near drivelines, slip clutches, and
gearboxes. Periodically shut down the Tractor and Mower and clean clippings
and collected debris from the mower deck.
ower is designed for certain mowing applications and is rated to cut up to a spec
(SGM-12)
c size
vegetation (see Mower Standard Equipment and Specifications). DO NOT use this mower to cut
vegetation above the Mower’s rated capacity or to cut any type of non-vegetative material. Only
operate this Mower on a properly sized and equipped Tractor. Operating this Mower in an
application for which it is not designed and/or operating the Mower with the wrong size Tractor can
cause Mower component damage and equipment failure resulting in possible serious injury or
death.
Do not operator or pull the mower into standing water. When uplift or fan type mower blades
contact water they can be severely deflected downward causing possible failure of blade
resulting in serious boldly injury to the operator or bystanders.
Use extreme caution when raising the Mower above ground level. Stop the Blades from
turning when the Mower is raised and passersby are within 100 yards. Raising the Mower
exposes the Cutting Blades which creates a potentially serious hazard and can cause serious
injury by objects thrown from the Blades or by contact with the Blades.
(SGM-15)
(SPU-1)
SAFETY
Rotary Mowers are capable under adverse conditions of throwing objects for
great distances (100 yards or more) and causing serious injury or death.
Follow safety messages carefully.
STOP MOWING IF PASSERSBY ARE WITHIN 100 YARDS UNLESS:
-Front and Rear Deflectors, Chain Guards, or Bands are installed and in good,
workable condition;
-Mower sections or Wings are running close to and parallel to the ground
without exposed Blades;
-Passersby are outside the existing thrown-object zone;
-All areas have been thoroughly inspected and all foreign material such as
rocks, cans, glass, and general debris has been removed.
NOTE: Where there are grass and weeds high enough to hide debris that
could be struck by the blades, the area should be: inspected and large debris
removed, mowed at an intermediate height, inspected, closely with any
remaining debris being removed, and mowed again at desired final height.
(This will also reduce power required to mow, reduce wear and tear on the
Mower drivetrain, spread cut material better, eliminate streaking, and make the
final cut more uniform).
(SRM-1)
Do Not attempt to raise or lower the implement wing unless the Implement tongue is securely attached to
the Tractor drawbar. The Implement could tip over and cause equipment damage and possible serious
injury or death. Raise or Lower the mower wing only while seated in the Tractor operator’s seat with the
Do not turn so sharp or lift mower so high to produce a severe "knocking" of the Driveline which
will cause accelerated wear and breakage of drive train components and could result in possible
injury from the separated Driveline sections.
Do not let the Blades turn when the Mower Deck is raised for any reason,
including clearance or for turning. Raising the Mower deck exposes the Cutting
Blades which creates a potentially serious hazard and could cause serious
injury or even death from objects thrown from the Blades.
Connecting or Disconnecting Implement Safety Instructions and Practices
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 Mower resulting in excessive vibration,
thrown objects, and blade and mower 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.
(SRM-4)
(SRM-7)
(S3PT-14)
SAFETY
Always shut the Tractor completely down, place the transmission in park, and set the parking
brake before you or anyone else attempts to connect or disconnect the Implement and Tractor
hitches.
(S3PT-15)
Never operate the Tractor and Mower if the Implement input driveline is directly connected to the
Tractor transmission. Tractor braking distances can be substantially increased by the momentum
of the rotating Mower blades driving the Tractor transmission even though the Tractor clutch has
been disengaged. Install an over running clutch between the Tractor PTO and the Mower
driveline to prevent this potentially dangerous situation.
en attaching the Implement input driveline to the Tractor
(S3PT-16)
mportant that the
connecting yoke spring activated locking collar slides freely and the locking balls are seated
securely in the groove on the Tractor PTO shaft. A driveline not attached correctly to the Tractor
PTO shaft could come loose and result in personal injury and damage to the Implement.
(S3PT-17)
Before operating the Implement, check to make sure the Implement input driveline will not bottom
out or become disengaged. Bottoming out occurs when the inner shaft penetrates the outer
housing until the assembly becomes solid-it can shorten no more. Bottoming out can cause
serious damage to the Tractor PTO by pushing the PTO into the Tractor and through the support
bearings or downward onto the PTO shaft, breaking it off. A broken drive line can cause personal
injury.
Be particularly careful when transporting the Implement with the Tractor. Turn curves or go up hills
only at a low speed and using a gradual steering angle. Rear mounted implements move the
center of gravity to the rear and remove weight from the front wheels. Make certain, by adding
front ballast, that at least 20% of the tractor’s weight is on the front wheels to prevent rearing up,
loss of steering control or Tractor tip-over. Slow down on rough or uneven surfaces to preven
loss of steering control which could result in property damage or possible injury. Do not transpor
unless 3-Point lift lever is fully raised and in the latched transport position. Dropping implement in
transport can cause serious damage to the tractor and/or Implement and possibly cause the
SAFETY
operator or others to be injured or killed.
Allow sufficient clearance for the Implement to swing outward while turning. Implements carried
behind the Tractor will swing outside the tire path when making turns. Contacting a solid object
while turning will cause equipment damage and possible injury.
Make certain that the “Slow Moving Vehicle” (SMV) sign is installed in such a
way as to be clearly visible and legible. When transporting the Equipment use
the Tractor flashing warning lights and follow all local traffic regulations.
Transport only at safe speeds. Serious accidents and injuries can result from
operating this equipment at unsafe speeds. Understand the Tractor and
Implement and how it handles before transporting on streets and highways.
Make sure the Tractor steering and brakes are in good condition and operate
properly.
Before transporting the Tractor and Implement, determine the safe transport
speeds for you and the equipment. Make sure you abide by the following rules:
•Test the tractor at a slow speed and increase the speed slowly. Apply
the Brakes smoothly to determine the stopping characteristics of the
Tractor and Implement. As you increase the speed of the Tractor the
stopping distance increases. Determine the maximum safe transport
speed for you and this Equipment.
•Test the equipment at a slow speed in turns. Increase the speed
through the turn only after you determine that it is safe to operate at a
higher speed. Use extreme care and reduce your speed when turning
sharply to prevent the tractor and implement from turning over.
Determine the maximum safe turning speed for you and this equipment before operating on roads or uneven ground.
•Only transport the Tractor and Implement at the speeds that you have
determined are safe and which allow you to properly control the
equipment.
SAFETY
Be aware of the operating conditions. Do not operate the Tractor with weak or
faulty brakes. When operating down a hill or on wet or rain slick roads, the
braking distance increases: use extreme care and reduce your speed. When
operating in traffic always use the Tractor’s flashing warning lights and reduce
your speed. Be aware of traffic around you and watch out for the other guy.
(SG-19)
Be particularly careful when transporting the Implement using the tractor. Turn curves or go up or
down hills only at a low speed and at a gradual steering angle. Make certain that at least 20% of
the tractor’s weight is on the front wheels to maintain safe steerage. Slow down on rough or
uneven surfaces.
ow the Implement behind a properly sized and equipped Tractor whic
exceeds the weight of the Implement by at least 20%. DO NOT tow the
Implement behind a truck or other type of vehicle. Never tow the Implement
and another Implement connected in tandem. Never tow the Implement at
Your driving vision may be reduced or impaired by the tractor, cab, or implement. Before driving
on public roadways identify any limited vision areas, and make adjustments to your operating
position, mirrors, and the implement transport position so that you can clearly see the area where
you will be traveling, and any traffic that may approach you. Failure to maintain adequate vision o
the public roadway and traffic can result in serious injury or even death. (STI-10)
Maintenance and Service Safety Instructions and Practices
Make sure the PTO shield, integral driveline shields, and input shields are is
installed when using PTO-driven equipment. Always replace any shield if it is
SAFETY
damaged or missing.
Relieve hydraulic pressure prior to doing any maintenance or repair work on
the Implement. Place the Implement on the ground or securely blocked up,
disengage the PTO, and turn off the tractor engine. Push and pull the Remote
Cylinder lever in and out several times prior to starting any maintenance or
repair work.
(S3PT-9)
(S3PT-8)
Always disconnect the main PTO Driveline from the Tractor before performing service on the
Implement. Never work on the Implement with the tractor PTO driveline connected and running.
Rotating Parts, Blades or Drivelines could turn without warning and cause immediate
entanglement, injury or death.
ever interfere w
failure of the equipment and may result in injury.
(S3PT-11)
ory-set hydraulic ca
ons. Any change in ca
(SBH-13)
on could cause a
Always maintain the safety decals in good readable condition. If the decals are missing,
damaged, or unreadable, obtain and install replacement decals immediately.
o not mo
any of its components or any Implement function.
ever work under the Implement, the framework, or any
y or alter
ement. Do not permit anyone to mo
(SG-8)
componen
(SG-5)
y or alter
ement,
unless the Implement is securely supported or blocked up to prevent sudden or
inadvertent falling which could cause serious injury or even death.
Never attempt to lubricate, adjust, or remove material from the Implement while it is in motion or
while tractor engine is running. Make sure the tractor engine is off before working on the
Implement.
Periodically inspect all moving parts for wear and replace when necessary with
authorized service parts. Look for loose fasteners, worn or broken parts, and
leaky or loose fittings. Make sure all pins have cotter pins and washers.
Serious injury may occur from not maintaining this machine in good working
order.
Do Not fill gasoline tank while engine is running. Refuel only after engine has cooled down. If
gasoline is spilled, move machine away from the area of the spill and avoid creating any source of
ignition until the gasoline has evaporated.
(SG-20)
(SG-21)
(SG-28)
SAFETY
Perform service, repairs and lubrication according to the maintenance section. Ensure the unit is
properly lubricated as specified in the lubrication schedule and all bolts and nuts are properly
torqued. Failure to properly service, repair and maintain this Implement in good operating
condition could cause component failure and possible serious injury or even death.
se caution and wear protective gloves when han
ng sharp objects such as blades, knives, an
(SG-35)
other cutting edges. Be alert to worn component surfaces which have sharp edges. Sharp
surfaces can inflict severe laceration injuries if proper hand protection is not worn.
(SG-37)
All Safety Shields, Guards and Safety devices including (but not limited to)
- the Deflectors, Chain Guards, Steel Guards, Gearbox Shields, PTO
integral shields, and Retractable Door Shields should be used and
maintained in good working condition. All safety devices should be
inspected carefully at least daily for missing or broken components.
Missing, broken, or worn items must be replaced at once to reduce the
possibility of injury or death from thrown objects, entanglement, or blade
contact.
(SGM-3)
Replace bent or broken blade with new blades. NEVER ATTEMPT TO STRAIGHTEN OR WELD
ON BLADES SINCE THIS WILL LIKELY CRACK OR OTHERWISE DAMAGE THE BLADE
WITH SUBSEQUENT FAILURE AND POSSIBLE SERIOUS INJURY FROM THROWN BLADES.
PARTS INFORMAT I ON
Rhino mowers use balanced and matched system components for blade carriers, blades, cuttershafts, knives,
knife hangers, rollers, drivetrain components, and bearings. These parts are made and tested to Rhino
specifications. Non-genuine "will fit" parts do not consistently meet these specifications. The use of “will fit”
parts may reduce mower performance, void warranties, and present a safety hazard. Use genuine Rhino
mower parts for economy and safety.
(SPRM-1)
SEE YOUR RHINO DEALER
SAFETY
e sure you have adequate knowledge of the property you w
yourself aware of any area underground lines or cables. Contact with buried lines or cable could
result in serious injury or death.
n wet con
that this material is removed before travelling on public roadways.
ons where there is a
(STL-1)
material collecting on the Implement, make certain
e working on. Take time to make
(STL-7)
Storage and Parking Safety Instructions and Practices
To prevent tipping of Implement when stored in folded position, use carrying wheels or adequate
stands on center frame.
(S3PT-6)
Concluding Safety Instructions and Practices
In a
hazard control and accident prevention are dependent upon the awareness, concern, prudence, and proper
training of personnel involved in the operation, transport, maintenance, and storage of the machine. Refer
also to Safety Messages and operation instruction in each of the appropriate sections of the Tractor and
Equipment Manuals. Pay close attention to the Safety Signs affixed to the Tractor and Equipment.
on to the design and configuration of
ement, including Safety Signs and Safety Equipment,
NOTE: Rhino supplies safety decals on this product to promote safe operation. Damage to the decals may occur while in
shipping, use, or reconditioning. Rhino cares about the safety of its customers, operators, and bystanders, and will
replace the safety decals on this product in the field, free of charge (Some shipping and handling charges may apply).
Contact your Rhino dealer to order replacement decals.
This Rotary Mower is designed with care and built with quality materials by skilled workers. Proper assembly,
maintenance, and operating practices, as described in this manual, will help the owner/operator get years of
satisfactory service from the machine.
The purpose of this manual is to familiarize, instruct, and train. The Assembly Section instructs the owner/
operator in the correct assembly of the Mower using standard and optional equipment. The Parts Listing
section is designed to familiarize the owner/operator with replaceable parts on the Mower. This section
provides exploded assembly drawings of each mower component illustrating each piece and the
corresponding part number.
Careful use and timely service saves extensive repairs and costly downtime losses. The Operation and
Maintenance Sections of the manual train the owner/operator how to work the Mower correctly and attend to
appropriate maintenance. The Trouble Shooting Guide helps diagnose difficulties with mower and offers
solution to the problems.
Safety is of primary importance to the owner/operator and to the manufacturer. The first section of this manual
includes a list of Safety Messages, that, if followed, will help protect the operator and bystanders from injury or
death. Many of the Safety Messages will be repeated throughout the manual. The owner/operator/dealer
INTRODUCTION
should know these Safety Messages before assembly and be aware of the hazards of operating this mower
during assembly, use, and maintenance. The Safety Alert Symbol combined with a Signal Word, as seen
below, is intended to warn the owner/operator of impending hazards and the degree of possible injury faced
when operating this machine.
The lowest level of Safety Message; warns of possible minor injury. Decals located on the
Cutter with this Signal Word are Black and Yellow.
Serious injury or possible death! Decals are Black and Orange.
Imminent death/critical injury. Decals are Red and White.
These mowers are available in lift-type models only. These rugged Mowers are designed for medium-duty
work. They can mow pastures, cut brush up to 2" in diameter, and control grass and weeds on highways or
industrial sites.
For Non-Agricultural use, OSHA, ASAE, SAE, and ANSI standards require the use of Chain
Guards or Solid Skirts at all times. The Cutter manufacturer strongly recommends the use of
Chain Guards or Solid Skirts for Agricultural purposes as well, to reduce the risk of property
damage, serious bodily injury, or even death from objects thrown out by or from contact with the
Cutting Blades.
The TW60 requires a tractor with a minimum of 30 HP and the TW72 requires a minimum of 40 HP with
adequate front end weight.
At least 20% or the tractor’s weight must be on the front tires with the implement lifted to provide
adequate traction for safe steering under good conditions. Slow down on hills, rough terrain,
and curves.
Front and rear, and left and right are determined by the normal direction of travel (the same as on your
automobile).
1. Carefully read the Operator’s Manual, completely understand the Safety Messages and instructions, and
know how to operate correctly both the tractor and implement.
2. Fill out the Warranty Card in full. Be sure to answer all questions, including the Serial Number of the
implement. Mail within 30 days of delivery date of this implement.
NOTE: Warranties are honored only if completed “Owner Registration and Warranty” forms are received by
Alamo Group within thirty days of delivery of the implement.
3. Record the Blade Model and Serial Numbers on the Warranty page at the front of the Operator’s Manual.
Keep this as part of the permanent maintenance file for the implement..
To assemble the Mower’s A-Frame, follow the procedures listed below:
1. Place one rear brace (3) (end with smaller hole)
to the inside of each lift lug located in the mid
section of the mower on each side of the gearbox. Position the braces so when attached to
the lugs, the braces bend towards the center of
the mower. Align the holes of the lugs and
braces and insert a 5/8” x 1-1/2” bolt (6) and
retain with a 5/8” locknut (5). Do not completely
tighten at this time.
2. One side at a time, position an A-frame leg (2)
to the inside of a inner lift lug located in the front
of the mower. The leg must be positioned with
the smaller hole to the bottom and the bend of
the leg to the center of the mower. Align the leg
ASSEMBLY
hole and inner lug back hole and retain together
with a 5/8” x 2” bolt (7) and 5/8” flat washer (8)
and locknut (5). Repeat procedure for opposite
side.
3. Position bushing (13) within the toggle link (4)
back set of holes (holes closest to bend). Raise
rear braces (3) and position against each side
of toggle link and bushing. Raise A-frame legs
and position to the outside of each rear brace.
Insert a 3/4” x 6” bolt (10) through A-frame legs,
rear braces, toggle link, and bushing and retain
with a 3/4” locknut (9).
To assemble the Mower’s TailWheel, follow the procedures listed below. Note: Certain steps may have been
performed by the manufacturer before delivery.
1. Place a 1-1/2” flatwasher (3) on the shaft of the
caster fork & wheel assembly (5). Attach
assembly to tailwheel beam (1) by inserting
shaft through the large hole of the tailwheel
beam. The beam must be positioned with its
grease fitting on the opposite end of the
tailwheel. Note: A light coat of grease can be
placed on the shaft for easier installation. After
the shaft is completely inserted, place another
1-1/2” flat washer onto the shaft and retain by
inserting a cotter pin (4) through shaft above
the washer. Spread ends of cotter pin..
2. Slide tailweel positioning bracket (2) onto
tailwheel beam. Position the opposite end of
the tailwheel beam between the set of lugs in
the mid section of the mower deck behind the
gearbox. Align holes of the lugs and tailwheel
beam and retain with a 5/8” x 4” bolt (7) and 5/
8” locknut (6).
3. Place the mid section of the tailwheel beam
between the tailwheel beam support brackets at
the desired cutting height. Note: The rear deck
height is set by raising or lowering the tailwheel
beam. Raise the beam to reduce the height of
cut, lower the beam to increase the height of
cut. Retain the beam in this position by
securing the positioning braket to support
braces with two 1/2” x 1-1/2” bolts (8) and 1/2”
locknuts (9).
4. Tighten all bolts, lockwashers, and nuts to the
recommended torque and grease fitting on end
of tailwheel beam until grease is visible on
either end of shaft.
ASSEMBLY
Front and Rear Deflectors (Standard Equipment) and Chain Guards
(Optional Equipment at Extra Cost)
Front and Rear rubber-fabric Deflectors are Standard Equipment and Front and Rear
Chain Guards are optional . One type of guard must be installed (and maintained in good
repair) except for agricultural purposes only in areas where persons, vehicles, livestock, or
other property will not be endangered by thrown objects and where such safety equipment
would prevent the mower's reasonable performance of its assigned agricultural task.
Deflectors: Front and Rear Deflectors (Standard Equipment) are recommended for the average user and will
provide protection from thrown objects with proper operation under normal conditions. Deflectors must be
maintained in good repair or replaced after no more than two inches of wear off lower edge.
Front Rubber Fabric Deflectors (Standard Equipment)
Front Deflector (Figure Asm-R-0085)
1. Attach the Front Bracket (1) to the front of the
mower with 5/8" x 3" Bolts (3), Flatwashers (9)
and Locknuts (4).
2. Attach the Front Deflector (2) to the Bracket
with 3/8" x 1-1/2" Bolts (5), Woodwashers (8),
Flatwashers (6), and Locknuts (7), as shown in
1. Attach the Right and Left Deflector Weldment (1
& 2) to the mower deck using 1/2" x 1-1/4" bolts
(5) and locknuts. Attach the Right and Left
Deflector Weldments (1 & 2) together using 1/2"
x 4" bolts (6), flatwasher (7) and locknuts.
2. Attach the Right and Left Mount Plates (9 & 10)
to the mower deck and the Deflector
Weldments using 1/2" x 1-1/4" bolts, flatwasher
and locknuts.
3. Attach the Deflector Panels (3) to the Deflector
Weldments using Deflector Bar (4), 1/2 x 1-1/4"
bolts, and locknuts.
Front and Rear Chain Guards (Optional Equipment) are recommended for higher than normal usage (100
hours or more per year) and will provide protection from thrown objects with careful operation. Chain Guards
must be maintained in good repair by replacing missing or worn sections or by replacing completely when worn
or damaged.
Front Chain Guard - TW60 & TW72 Figure 5
1. Attach Chain Guard Plate (4) to deck using 5/8"
x 3-1/2" Bolts (8), Washers (6), and Locknut (7).
2. Insert the individual Chain Links (3) into slotted
holes in Chain Guard Plate (4) and secure in
place with Rod (9)
3. Attach the Side Deflectors (5) to the mower
deck using 1/2" x 1-1/2" bolts (2) and Locknuts
(1)
ASSEMBLY
Rear Chain Guards (Optional Equipment)
Rear Chain Guard - TW60 & TW72 Figure AsmR-0087
1. Attach the Right and Left Deflector Weldment (2
& 3) to the mower deck using 1/2" x 1-1/4" bolts
(6) and locknuts. Attach the Right and Left
Deflector Weldments (2 & 3) together using 1/2"
x 4" bolt (7), flatwasher (8) and locknuts.
2. Attach the Right and Left Mount Plates (4 & 5)
to the Mower Deck and the Deflector
Weldments using 1/2" x 1-1/4" bolts, flatwasher
and locknuts.
3. Place Chain Links (10) through slotted hole in
Guard Bracket (1) and secure in place with Rod
(11), bending end over to prevent rod from
falling out due to vibration.
4. Attach the assembled Chain Guards to the
Deflector weldments (1 & 2) using 3/8" x 1-1/4"
Bolts, Flatwashers (8), and Locknuts (9).
Before starting assembly, make certain that all paint, dirt, and grease are removed from gearbox shaft (1). To
ease assembly apply a light coat of grease to splines and assemble. Do not assemble a driveline without a
shield. Entanglement in rotating shafts can kill.
.
1. Attach the slip clutch end of the driveline to the
gearbox input shaft securely. Make certain that
the slip clutch is fully onto the input shaft
splines. Tighten the locknuts (2) alternately
until they have reached the proper torque.
Refer to Torque Chart in the Maintenance
Section.
ASSEMBLY
SLIP CLUTCH SHIELD ASSEMBLY (FIGURE
Asm-R-0091)
To attach the Slip Clutch Shield, follow the
procedures listed below.
1. Guide shield bracket (2) through weldment
shield (1) so that bracket stud screw potrudes
through weldment hole and retain in place with
wingnut (3).
2. Align holes of shield bracket with gearbox holes
positioned around input shaft. Retain bracket to
gearbox with three 3/8” x 3/4” bolts (6), 3/8”
washers (4), and 3/8” lockwashers (5).
Position hardware as follows: gearbox,
bracket, flatwasher, lockwasher, bolt. Tighten
bolts to recommended torque.
Check Chains - Extra Equipment - for Lift-Models (Figure Asm-0011)
Check Chains are available for attachment to front of Mower as an accessory. Check chains are used to
control cutting height and especially allow Mower to be lowered to the same preset cutting height effortlessly.
Install lower end of check chain (4) to hitch ears (6) through lower holes (7) using bolts, nuts and
lockwashers(8). Tighten securely.
Install chain lugs (3) on either side of tractor top link mounting (5) using bolt or pin of required diameter and
length. Cat I kit requires a 3/4" diameter bolt. Cat II kit requires a 1" diameter bolt. Install top end of check
chains in brackets (3).
Cutting height is then set by placing proper chain link in keyhole slot. Cutting height is easily adjustable by
hooking chain higher or lower in the keyholes in chain lug (3).
For additional safety in transport, raise mower as high as possible without having driveline hit deck
and shorten check chains as much as possible to prevent inadvertent falling in transport.
Offset Adapter Hitch - Extra Equipment (Figure Asm-0010)
1. Fasten the Offset Adapter Hitch weldment to
the lift lugs using the Hitch Pin holes. Fasten
the Adjustable Leg to the left side lug if the
Mower is to offset to the left. The Mower will
make a cleaner cut behind the wheel tracks if it
is offset to the left. Reverse the Assembly for
right offset.
2. Install the Brace Bars. Fasten the chain end to
the rear mounting hole in the Gearbox Base
Plate. Adjust the Brace Bar so the Hitch
Assembly is nearly perpendicular.
3. Attach the Mower to the tractor. Install stabilizer
bars or adjust sway chains to prevent side sway
of the mower.
Stabilizer Bars or Sway Chains must be installed and adjusted tightly. Without these bars or
ASSEMBLY
4. Raise the mower to check clearance between the Driveline and Mower Deck. Set the lift stop on the
tractor to ascertain that the Driveline does not strike the deck.
chains, serious damage to the Driveline can occur, and broken parts could cause bodily injury to
the operator or bystanders. Stabilizer Bars or Sway Chains are available at most tractor
dealerships.
For additional safety in transport, raise mower as high as possible without having driveline hit deck
and shorten check chains as much as possible to prevent inadvertent falling in transport.
Rhino Twister 60 and 72 (TW60/72) rotary mowers are manufactured with quality material by skilled workers.
These medium-duty mowers are engineered for mowing grass, shredding stalks, maintaining pastures, and
cutting other vegetation up to 2” in diameter. The mower is equipped with protective deflectors and/or chain
guards to prevent objects being thrown from the mower by the blades, however, no shielding is 100%
effective. All shields, guards, deflectors, and chains equipped on the unit must be maintained on the mower in
good operational condition.
It is the operator’s responsibility to be knowledgeable of all potential operating hazards and to take every
reasonable precaution to ensure oneself, others, animals, and property are not injured or damaged by the
mower, tractor, or a thrown object. Do not operate the mower if passersby, pets, livestock, or property are
directly in front or to the rear of the unit.
This section of the Operator’s Manual is designed to familiarize, instruct, and educate safe and proper mower
use to the operator. Pictures contained in this section are intended to be used as a visual aid to to assist in
OPERATION
explaining the operation of a rotary mower and and are not of a TW60/72 cutter. Some pictures may show
shields removed for purposes of clarity. NEVER OPERATE this implement without all shields in place and in
good operational condition. The operator must be familiar with the mower and tractor operation and all
associated safety practices before operating the mower and tractor. Proper operation of the TW60/72 mower,
as detailed in this manual, will help ensure years of safe and satisfactory use of the mower.
IMPORTANT: To avoid mower damage, retorque all bolts after the first 10 hours of operation. Retorque blade
carrier retaining nut on gearbox lower shaft to 450 ft. lbs.
READ AND UNDERSTAND THE ENTIRE OPERATING INSTRUCTIONS AND SAFETY SECTION OF THIS
MANUAL AND THE TRACTOR MANUAL BEFORE ATTEMPTING TO USE THE TRACTOR AND MOWER.
If you do not understand any of the instructions, contact your nearest authorized dealer for a full explanation.
Pay close attention to all safety signs and safety messages contained in this manual and those affixed to the
cutter and tractor. OPS-U- 0001
READ, UNDERSTAND, and FOLLOW
death may occur unless care is taken to follow the warnings and instructions stated in the
Safety Messages. Always use good common sense to avoid hazards.
Si no lee ingles, pida ayuda a alguien que si lo lea para que le traduzca las
medidas de seguridad.
ower is designed for certain mowing applications and is rated to cut up to a spec
vegetation (see Mower Standard Equipment and Specifications). DO NOT use this mower to cut
vegetation above the Mower’s rated capacity or to cut any type of non-vegetative material. Only
operate this Mower on a properly sized and equipped Tractor. Operating this Mower in an
application for which it is not designed and/or operating the Mower with the wrong size Tractor can
cause Mower component damage and equipment failure resulting in possible serious injury or
death.
Safe operation of the unit is the responsibility of a qualified operator. A qualified operator has read and
understands the implement and tractor Operator’s Manuals and is experienced in implement and tractor
operation and all associated safety practices. In addition to the safety messages contained in this manual,
safety decals are affixed to the implement and tractor. If any part of the operation and safe use of this
equipment is not completely understood, consult an authorized dealer for a complete explanation.
If the operator cannot read the manuals for themselves or does not completely understand the operation of the
equipment, it is the responsibility of the supervisor to read and explain the manuals, safety practices, and
operating instructions to the operator.
Safe operation of equipment requires that the operator wear approved Personal Protective Equipment (PPE)
for the job conditions when attaching, operating, servicing, and repairing the equipment. PPE is designed to
provide operator protection and includes the following safety wear:
PERSONAL PROTECTIVE EQUIPMENT (PPE)
OPERATION
•Protective Eye Glasses, Goggles, or Face
Shield
•Hard Hat
•Steel Toe Safety Footwear
•Gloves
•Hearing Protections
•Close Fitting Clothing
•Respirator or Filter Mask (depends on mowing
conditions) OPS-U- 0002
NEVER use drugs or alcohol immediately before or while operating the Tractor
and Implement. Drugs and alcohol will affect an operator’s alertness and
coordination and therefore affect the operator’s ability to operate the equipment
safely. Before operating the Tractor or Implement, an operator on prescription
or over-the-counter medication must consult a medical professional regarding
any side effects of the medication that would hinder their ability to operate the
Equipment safely. NEVER knowingly allow anyone to operate this equipment
when their alertness or coordination is impaired.
operator or others could result if the operator is under the influence of drugs or
alcohol.
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.
Tractor Requirements and Capabilities
•ASAE approved Roll-Over Protective Structure (ROPS) or ROPS cab and seat belt.
•Front End Weight ............................. As needed to maintain 20% weight on front axle
•Power Take Off................................. 540 RPM 6-spline shaft
OPERATION
2.1 ROPS and SEAT BELT
The tractor must be equipped with a Roll-Over-Protective-Structure (ROPS) (tractor cab or roll-bar) and seat
belt to protect the operator from falling off the tractor, especially during a roll over where the driver could be
crushed and killed. Only operate the tractor with the ROPS in the raised position and seat belt fastened.
Tractor model not equipped with a ROPS and seat belt should have these life saving features installed by an
authorized dealer. OPS-U- 0003
Operate this Equipment only with a Tractor equipped with an approved rollover-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)
2.2 Tractor Safety Devices
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. OPS-U- 0004
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 CY60 mower requires a tractor with a minimum of 30 HP and the CY72 mower requires
a tractor with a minimum of 40 HP. Operating the mower with a tractor that does not have adequate power may
damage the tractor engine. Exceeding 75 HP may cause mower damage by overpowering the unit in heavy
cutting conditions.
2.4 3-Point Hitch
The tractor 3-point hitch must be rated to lift at least
850 lbs. if attaching a TW60 and 1050 lbs. if
attaching a TW72 mower..
TW60/72 mowers can attach to tractor’s with either
a CAT I or II hitch. Refer to the tractor operator’s
manual for the category of the tractor used. If the
OPERATION
hitch does not conform to ASAE Cat I or II
dimensions, the mower may not fit or raise properly.
Consult an authorized dealer for possible
modification procedures to mount nonconforming
hitches.
Use the correct hitch pins for the hitch category
being used. For a Cat I hitch, 7/8” lower and 3/4”
upper diameter hitch pins are used and Cat II
hitches require 1-1/8” lower and 1” upper diameter
hitch pins.
CAT I Implement / Hitch Specification CAT II Implement/ Hitch Specification
Width from outside to outside A-frame.... 26 7/8”Width from outside to outside A-frame....32-3/8”
Quick Hitch width inside lug to lug ......... 27 1/8”Quick Hitch width inside lug to lug ..........33-5/8”
Height from bottom hitch pin to top pin... 18”Height from bottom hitch pin to top pin ...19”
A minimum of 20% total tractor weight must be maintained on the tractor front end at all times. Front end
weight is critical to maintain steering control and to prevent the tractor from rearing up while driving. If the
front end is too light, add weight until a minimum of 20% total weight is reached on the front tires. Front
weights and weight carriers can be purchased through an authorized tractor dealership. OPS-U- 0005
Depending on the unit, the mower is designed to operate at a PTO speed of 540 or 1000 RPM. Most tractors
operate at either 540, or a combination of 540 and 1000 RPM PTO speeds. The operating speed of the
mower 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 6-spline shaft and those operating at 1000 RPM will have a 21-spline
shaft. Note: The mower will not operate on tractors equipped with a 1000 RPM 20-spline, 1-3/4” 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. OPS-U- 0006
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 Mower resulting in excessive vibration,
thrown objects, and blade and mower 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)
OPERATION
Never operate the Tractor and Mower if the Implement input driveline is directly connected to the
Tractor transmission. Tractor braking distances can be substantially increased by the momentum
of the rotating Mower blades driving the Tractor transmission even though the Tractor clutch has
been disengaged. Install an over running clutch between the Tractor PTO and the Mower
driveline to prevent this potentially dangerous situation.
(S3PT-16)
3. 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
Do not mount the Tractor while the tractor is moving. Mount the Tractor only
when the Tractor and all moving parts are completely stopped.
Use both hands and equipped handrails and steps for support when boarding the tractor. Never use control
levers for support when mounting the tractor. Seat yourself in the operator’s seat and secure the seat belt
around you.
Never allow passengers to ride on the tractor or attached equipment. Riders can easily fall off and be
seriously injured or killed from falling off and being ran over. It is the operator’s responsibility to forbid all extra
riders at all times. OPS-U- 0008
Never allow children to operate, ride on, or come close to the Tractor or
Implement. Usually, 16-17 year-old children who are mature and responsible
can operate the implement with adult supervision, if they have read and
understand the Operator’s Manuals, been trained in safe operation of the
tractor and Implement, and are physically large enough to reach and operate
the controls easily.
(SG-11)
OPERATION
Never allow children or other persons to ride on the Tractor or Implement.
Falling off can result in serious injury or death.
(SG-10)
3.2 Dismounting the Tractor
Before dismounting, park the tractor and implement on a reasonably level surface, apply the parking brake,
idle the engine down, disengage the PTO, and lower the implement to the ground. Shut down the tractor
engine according to the operator’s manual, remove the key, and wait for all motion to completely stop. Never
leave the seat until the tractor, its engine and all moving parts have come to a complete stop.
Use hand rails and steps when exiting the tractor. Be careful of your step and use extra caution when mud,
ice, snow or other matter has accumulated on the steps or hand rails. Use all handrails and steps for support
and never rush or jump off the tractor. OPS-U- 0009
BEFORE leaving the tractor seat, always engage the brake and/or set the
tractor transmission in parking gear, disengage the PTO, stop the engine,
remove the key, and wait for all moving parts to stop. Place the tractor shift
lever into a low range or parking gear to prevent the tractor from rolling. Never
dismount a Tractor that is moving or while the engine is running. Operate the
Tractor controls from the tractor seat only.
The operator must have a complete understanding of the placement, function, and operational use of all
tractor controls before starting the tractor. Review the tractor operator’s manual and consult an authorized
dealer for tractor operation instructions if needed.
Essential Tractor Controls:
•Locate the light control lever.
•Locate the engine shut off control.
•Locate the brake pedals and the clutch.
•Locate the PTO control.
•Locate the 3-point hitch control lever.
•Locate the hydraulic remote control levers.
Before starting the tractor ensure the following:
•Conduct all pre-start operation inspection and service according to the tractor operator’s manual.
•Make sure all guards, shields, and other safety devices are securely in place.
•The parking brake is on.
•The PTO control lever is disengaged.
•The 3-point hitch control lever is in the lowered position.
•The hydraulic remote control levers are in the neutral position.
•The tractor transmission levers are in park or neutral.
Refer to the tractor owner’s manual for tractor starting procedures. Only start the tractor while seated and
belted in the tractor operator’s seat. Never bypass the ignition switch by short circuiting the starter solenoid.
OPERATION
After the tractor engine is running, avoid accidental contact with the tractor transmission to prevent sudden
and unexpected tractor movement. OPS-U-0028
Never run the Tractor engine in a closed building or without adequate ventilation. The exhaust
fumes can be hazardous to your health.
Start tractor only when properly seated in the Tractor seat. Starting a tractor in
gear can result in injury or death. Read the Tractor operators manual for proper
starting instructions.
(SG-13)
(SG-23)
5. CONNECTING THE MOWER TO THE TRACTOR
Use extreme caution when connecting the mower to the tractor. The mower should be securely resting at
ground level or setting on blocks. Keep hands and feet from under the mower deck and clear of pinch points
between the tractor hitch arms and mower pins. OPS-R-0001
Always shut the Tractor completely down, place the transmission in park, and set the parking
brake before you or anyone else attempts to connect or disconnect the Implement and Tractor
hitches.
1. Make sure the tractor is equipped with the
correct PTO shaft. Change shafts if needed.
2. Shorten or remove the tractor drawbar to
avoid interference when raising and lowering
the mower.
3. Board the tractor and start the engine. Position the tractor to the mower with the 3-point
lift arms positioned between the respective
set of mower A-frame lift lugs.
4. Turn off the tractor engine and dismount.
5. One lift arm at a time, align arm end hole
between the set of holes of A-frame lift lugs.
OPERATION
Insert hitch pin through the lug and arm
holes and insert retaining pin into hitch pin.
6. Walk around to opposite side and repeat procedure for remaining lift arm and lift lugs.
7. Extend or retract 3-point top link to align its
end hole with the holes of the mower’s top
link. Insert the top link hitch pin and insert
retaining pin into hitch pin.
8. Adjust any lower link check chains, guide
blocks, or sway blocks to prevent the mower
from swaying side to side and possible contact with tractor rear tires.
(S3PT-15)
Note: Offset Adaptor Hitches are available to position the mower to the left or right. Mowers with Offset
Adaptor hitches connect to the 3-Point hitch the same way as the mower A-frame. See Offset Adaptor Hitch in
the Assembly Section for details to equip the mower with this feature.
6. SETTING THE MOWER
Properly setting the cutting height is essential for efficient and safe operation. A properly set mower will make
a more uniform cut, distribute clippings more evenly, require minimal tractor work, and follow the contour of
uneven terrain. NOTE: Avoid very low cutting heights, striking the ground with the blades gives the most
damaging shock loads and will cause damage to the mower and drive. Blades contacting the ground may
cause objects to be thrown out from under the mower deck. Always avoid operating the mower at a height
which causes the blades to contact the ground. OPS-U- 0010
ever work under the Implement, the framework, or any
unless the Implement is securely supported or blocked up to prevent sudden or
inadvertent falling which could cause serious injury or even death.
6.1 Setting Mower Height
1.Park the tractor and mower on level ground.
2.Using the 3-point hitch control lever, position
the front of the mower with the side skids 1”
less off the ground than desired cut height.
For example, for a 3” cut, position the skids 2”
from the ground. Set the 3-point control lever
stop at this position to maintain this height
when raising and lowering the mower.
3.Shut down the tractor and remove the key.
4.Level the mower deck front to rear by
extending or retracting the 3-point top link.
5.Level the mower side to side by manipulating
one lower lift arm length. On most tractors, at
least one of the lift arms is designed to allow
for manipulation of its length. Shortening or
extending will allow for deck leveling from
side to side.
6.Securely block up the mower at this height.
7.Remove the bolts securing the tailwheel
beam in position and allow the tailwheel to
rest at ground level. Align tailwheel beam
between nearest sets of holes in beam
support brackets and reinstall support bolts
on each side of beam. Tighten all bolts and
nuts.
8.Extend the tractor’s top 3-point link so that
when lifting the mower, the front of the deck
will raise 2 to 2½" before the tail wheel leaves
the ground. This will allow the mower to
follow the contour of uneven terrain.
componen
(SG-14)
OPERATION
Note: Install optional check chains when there is a
problem with the hydraulic 3-Point lift maintaining a
set height or when a constant pre-adjusted cut
height is required. See Check Chains in the
Assembly Section for this accessory.
To facilitate safe and efficient operation, the mower
should be operated with the deck approximately
3/4” LOWER IN THE FRONT THAN THE REAR.
The correct deck pitch is obtained as follows:
1. Lower the mower until the rear of the mower is
resting securely on its tail wheel.
2. Then slowly lower the 3-point lift arms further
until the front of the mower is at least 3/4” lower
than the rear of the mower.
3. Place the tractor’s 3-point control lever stop at
this position so that each time the mower is raised
and lowered the deck pitch will be maintained.
Operating the mower with the front of the deck slightly lower than the rear allows the mower to cut the grass
OPERATION
only once and requires less work from the tractor. In addition, a more even distribution of the clippings from
the rear of the mower will be achieved with this angle. OPS-R-0002_B
7. DRIVELINE ATTACHMENT
The driveline yoke and tractor PTO shaft must be
dirt free and greased for attachment.
To connect the mower driveline to the tractor PTO
output shaft, pull the driveline yoke collar back and
align the grooves and splines of the yoke with those
of the PTO shaft. Push the driveline yoke onto the
PTO shaft, release the locking collar, and position
the yoke until the locking collar balls are seated
onto the PTO shaft. Push and pull the driveline
back and forth several times to ensure a secure
attachment. OPS-R-0003_A
en attaching the Implement input driveline to the Tractor
connecting yoke spring activated locking collar slides freely and the locking balls are seated
securely in the groove on the Tractor PTO shaft. A driveline not attached correctly to the Tractor
PTO shaft could come loose and result in personal injury and damage to the Implement.
Before operating the Implement, check to make sure the Implement input driveline will not bottom
out or become disengaged. Bottoming out occurs when the inner shaft penetrates the outer
housing until the assembly becomes solid-it can shorten no more. Bottoming out can cause
serious damage to the Tractor PTO by pushing the PTO into the Tractor and through the support
bearings or downward onto the PTO shaft, breaking it off. A broken drive line can cause personal
injury.
(S3PT-18)
OPERATION
When fitting the mower to the tractor, the telescoping driveline must be inspected to ensure that at its most
compressed position, the profiles do not “bottom out”, and when at its farthest extended position, there is
sufficient engagement between the profiles to operate safely. At its shortest length, there must be at least a 1”
clearance between each profile end and opposite profile universal joint. At its farthest operating extension, a
minimum profile engagement of 9” must be maintained.
ng Out” Check Procedure
•Disconnect driveline from the tractor and slide
the profiles together until fully compressed.
•Place a mark on the inner shield 1/8” from the
end of the outer shield.
•Reattach the driveline to the PTO Shaft.
•Raise the mower and watch the driveline as it
approaches the mark. If the distance between
the mark and the end of the outer shield tube
becomes less than 2” at any point, the driveline
must be shortened. OPS-R-0004_A
•Raise and lower the mower to find the position
with the shortest distance between the tractor
PTO shaft and cutter gearbox. Shut down the
tractor and securely block the mower in this
position.
•Pull driveline apart and reattach yoke to PTO
shaft.
•Hold driveline sections parallel to one another
and measure back 1” from yoke of each shaft
and place mark on opposite section. Cut this
length off with a saw.
•Round off all sharp edges and debur.
•Thoroughly grease then reinstall the driveline.
•Recheck for proper operation.
Engagement Check Procedure
OPERATION
•With the driveline attached, raise and lower the mower within its operating range. Position the mower to
the point where the telescoping driveline is at its maximum extension. Completely shut down the tractor
and secure in position.
•Mark the inner driveline shield 1/8” from the end of the outer shield.
•Disconnect the driveline from the tractor and separate the two driveline halves.
•Measure the distance from the mark to the end of the inner profile. This length is the amount the driveline
profiles were engaged.
•If the engaged length is less than 9”, the shaft is considered too short and should be replaced with a longer
shaft. Consult an authorized dealer to purchase the required driveline length.
NOTE: When raising the mower, at least 1” clearance must be maintained between the driveline and the
mower deck. If necessary, place an upper lift stop on the 3-point hitch control lever to limit the height the
mower can be raised. OPS-R-0005_E
8. PRE-OPERATION INSPECTION AND SERVICE
Before each use, a pre-operation inspection and service of the implement and tractor must be performed.
This includes routine maintenance and scheduled lubrication, inspecting that all safety devices are equipped
and functional, and performing needed repairs. DO NOT operate the unit if the pre-operation inspection
reveals any condition affecting safe operation. Perform repairs and replacement of damaged and missing
parts as soon as noticed. By performing a thorough pre-operation inspection and service, valuable down time
and repair cost can be avoided. OPS-U-0029