Alamo Bush Hog PA8 User manual

© 2021 Alamo Group Inc.
PASTURE-
AERATOR
Published 05/21 Part No. 50074308
OPERATOR’S MANUAL
BUSH HOG®
2501 Griffin Ave.
Selma, AL 36703
334-874-2700
www.bushhog.com
MODELS
PA8 & PA10
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, UNDERSTAND, and FOLLOW the Safety
and Operation Instructions contained in this manual before operating the equipment. C01-
Cover
$0.00

To the Owner/Operator/Dealer
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!
For future reference, record your Bush Hog product model number and serial number.
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.
Dealer Telephone Model Number
Owner Purchase Date Serial Number
SERIAL NUMBER PLATE
(On Frame)

TABLE OF CONTENTS
SAFETY SECTION .............................................................................................................. 1-1
General Safety Instructions and Practices .........................................................................................................1-2
Equipment Operation Safety Instructions and Practices ....................................................................................1-4
Connecting or Disconnecting Implement Safety Instructions and Practices ......................................................1-6
Maintenance and Service Safety Instructions and Practices .............................................................................1-7
Storage and Parking Safety Instructions and Practices .....................................................................................1-8
Transporting Safety Instructions and Practices .................................................................................................1-8
Concluding Safety Instructions and Practices ..................................................................................................1-10
PARTS INFORMATION ...................................................................................................................................1-10
Decal Location .................................................................................................................................................1-11
Decal Description .............................................................................................................................................1-13
FEDERAL LAWS AND REGULATIONS ..........................................................................................................1-15
INTRODUCTION SECTION ................................................................................................. 2-1
ASSEMBLY SECTION ........................................................................................................ 3-1
Dealer Set-up Instructions .................................................................................................................................3-2
HITCH ASSEMBLY ............................................................................................................................................3-2
TONGUE ASSEMBLY .......................................................................................................................................3-3
WHEEL ASSEMBLY ..........................................................................................................................................3-4
TRANSPORT WHEEL FRAME ASSEMBLY .....................................................................................................3-4
SLOW MOVING VEHICLE SIGN INSTALLATION ............................................................................................3-5
OPERATION SECTION ....................................................................................................... 4-1
Standard Equipment and Specifications ............................................................................................................4-3
OPERATOR REQUIREMENTS .........................................................................................................................4-4
TRACTOR REQUIREMENTS ............................................................................................................................4-5
ROPS and Seat Belt ..........................................................................................................................................4-5
Tractor Horsepower ...........................................................................................................................................4-5
Front End Weight ..............................................................................................................................................4-5
GETTING ON AND OFF THE TRACTOR .........................................................................................................4-5
Boarding the Tractor ..........................................................................................................................................4-6
Dismounting the Tractor ....................................................................................................................................4-6
STARTING THE TRACTOR ..............................................................................................................................4-7
CONNECTING THE IMPLEMENT TO THE TRACTOR ....................................................................................4-7
SETTING TINE GANG ANGLE .........................................................................................................................4-8
PRE-OPERATION INSPECTION AND SERVICE .............................................................................................4-9
Tractor Pre-Operation Inspection/Service ..........................................................................................................4-9
Aerator Pre-Operation Inspection/Service .......................................................................................................4-10
Starting the Tractor ..........................................................................................................................................4-13
Brake and Differential Lock Setting ..................................................................................................................4-13
DRIVING THE TRACTOR AND IMPLEMENT .................................................................................................4-14
OPERATING THE TRACTOR AND IMPLEMENT ...........................................................................................4-14
Set-Up for Field Work ......................................................................................................................................4-14
Operating the Aerator ......................................................................................................................................4-15
Shutting Down the Implement ..........................................................................................................................4-15
DISCONNECTING THE AERATOR FROM THE TRACTOR ..........................................................................4-15
STORAGE .......................................................................................................................................................4-16

TRANSPORTING THE TRACTOR AND IMPLEMENT ...................................................................................4-16
Tractor Hook-Up for Transporting ....................................................................................................................4-17
DRIVING THE TRACTOR AND IMPLEMENT .................................................................................................4-18
Transporting on Public Roadways ...................................................................................................................4-19
Hauling the Tractor and Implement ..................................................................................................................4-21
TROUBLESHOOTING GUIDE ........................................................................................................................4-22
MAINTENANCE SECTION .................................................................................................. 5-1
LUBRICATION INFORMATION .........................................................................................................................5-2
Lubrication Points ..............................................................................................................................................5-2
Hydraulic Fluid ...................................................................................................................................................5-3
TINE REPLACEMENT .......................................................................................................................................5-3
STORAGE .........................................................................................................................................................5-4
Proper Torque For Fasteners ............................................................................................................................5-5
AP54 WITH WATER TANK ................................................................................................................................6-4
AP54 WITH WEIGHT BOX .................................................................................................................................6-8
AP66 WITH WATER TANK ..............................................................................................................................6-12
AP66 WITH WEIGHT BOX ...............................................................................................................................6-16

Safety Section 1-1
SAFETY SECTION

SAFETY
PA8 & PA10 05/21 Safety Section 1-2
© 2021 Alamo Group Inc.
SAFETY
General Safety Instructions and Practices
Operator Safety Instructions and Practices
A 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
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.
Indicates an imminently hazardous situation that, if not avoided, WILL result in DEATH OR
VERY SERIOUS INJURY.
Indicates an imminently hazardous situation that, if not avoided, COULD result in DEATH
OR SERIOUS INJURY.
Indicates an imminently hazardous situation that, if not avoided, MAY result in MINOR
INJURY.
Identifies special instructions or procedures that, if not strictly observed, could result in
damage to, or destruction of the machine, attachments or the environment.
NOTE: Identifies points of particular interest for more efficient and convenient operation or repair.(SG-1)
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.
READ, UNDERSTAND, and FOLLOW the following Safety Messages. Death or serious
injury 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. (SG-2)
Si no lee ingles, pida ayuda a alguien que si lo lea para que le traduzca las
medidas de seguridad. (SG-3)

SAFETY
PA8 & PA10 05/21 Safety Section 1-3
© 2021 Alamo Group Inc.
SAFETY
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)
Never operate the Tractor or Implement until 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 to operate
the Tractor or 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 that may be 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. (SG-I7)
Always read carefully and comply fully with the manufacturer’s
instructions when handling oil, solvents, cleansers, and any other
chemical agent. (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. Inadvertent contact with controls can cause the
Implement to shift or fall crushing themselves or others. (SG-25)

SAFETY
PA8 & PA10 05/21 Safety Section 1-4
© 2021 Alamo Group Inc.
SAFETY
Equipment Operation Safety Instructions and Practices
DO NOT 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)
Prolonged 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. (SG-32)
Use extreme caution when getting 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
ground level. Slipping and falling can cause serious injury or death. (SG-33)
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.
(SG-36)
There are obvious and hidden potential hazards in the operation of this implement as in all
power-driven or pulled equipment. REMEMBER! This machine is often operated in rough
terrain conditions that include tall grass, weeds, gullies, holes, slopes, hidden obstructions
and the like. Serious injury or even death may occur unless care is taken to assure the
safety of the operator and bystanders in the area. Do not operate this machine with anyone
in the immediate area (S3PT-07)
This Implement may be 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
PA8 & PA10 05/21 Safety Section 1-5
© 2021 Alamo Group Inc.
SAFETY
Be sure you have adequate knowledge of the property you will be 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. If in doubt about buried utility lines call 811
before digging or 1-800-258-0808. (SBH-6)
Never leave the Implement and Power Unit unattended while the Implement is in the raised
position. Accidental operation of a lifting lever or a hydraulic failure may cause the
implement to suddenly fall causing serious injury or possible death to anyone who might
inadvertently be under the Implement. Lower the implement carefully to the ground. Do not
put hands or feet under lifted components. (SPU-3)
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)
BEFORE leaving the tractor seat, lower the implement, set the parking
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. (SG-10)
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
proper operation of the tractor and Implement, and are physically large
enough to reach and operate the controls easily. (SG-11)
Do not mount or dismount the Tractor while the tractor is moving. Mount
the Tractor only when the Tractor and all moving parts are completely
stopped. (SG-12)

SAFETY
PA8 & PA10 05/21 Safety Section 1-6
© 2021 Alamo Group Inc.
SAFETY
Connecting or Disconnecting Implement Safety Instructions and
Practices
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)
Never run the Tractor engine in a closed building or without adequate ventilation. The
exhaust fumes can be hazardous to your health. (SG-23)
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. (SG-29)
In case of mechanical difficulty during operation, place the transmission in the park
position, set the parking brake, shut down all power, including the PTO and the engine and
remove the key. Wait until all rotating motion has stopped 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 moving
tractor. (SG-40)
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)