Bush Hog DHP8 User manual

©2021 Alamo Group Inc.
Published 05/21 Part NO. 50072116
OPERATOR’S MANUAL
BUSH HOG®
2501 Griffin Ave.
Selma, AL 36703
334-874-2700
www.bushhog.com
MODELS DHP8, DHP10, DHP12
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
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HARROW

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!
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

TABLE OF CONTENTS
SAFETY SECTION ............................................................................................................... 1-1
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 .......................................................1-7
Maintenance and Service Safety Instructions and Practices ..............................................................................1-7
Transporting Safety Instructions and Practices ..................................................................................................1-9
Concluding Safety Instructions and Practices...................................................................................................1-11
Decal Location ..................................................................................................................................................1-12
Decals ............................................................................................................................................................... 1-13
FEDERAL LAWS AND REGULATIONS........................................................................................................... 1-14
INTRODUCTION SECTION..................................................................................................2-1
FEATURES.........................................................................................................................................................2-4
ASSEMBLY SECTION .........................................................................................................3-1
DEALER SET-UP INSTRUCTIONS....................................................................................................................3-2
AXLE ASSEMBLY .............................................................................................................................................. 3-2
SPINDLE/HUB/WHEEL ASSEMBLY .................................................................................................................. 3-2
THREADED ROD ASSEMBLY...........................................................................................................................3-3
HITCH ASSEMBLY.............................................................................................................................................3-3
HYDRAULIC CYLINDER ASSEMBLY................................................................................................................3-4
GANG ARM ASSEMBLY ....................................................................................................................................3-5
DISC GANG ASSEMBLY ...................................................................................................................................3-6
Disc Gang Positioning......................................................................................................................................... 3-7
OPTIONAL SCRAPER KITS ASSEMBLY ..........................................................................................................3-7
OPTIONAL CENTER SWEEP ASSEMBLY........................................................................................................ 3-8
PARKING BRAKE...............................................................................................................................................3-9
SLOW MOVING VEHICLE SIGN........................................................................................................................3-9
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 Safety Devices........................................................................................................................................4-5
Tractor Horsepower ............................................................................................................................................4-5
Front End Weight ...............................................................................................................................................4-5
GETTING ON AND OFF THE TRACTOR ..........................................................................................................4-6
Boarding the Tractor ...........................................................................................................................................4-6
Dismounting the Tractor......................................................................................................................................4-7
STARTING THE TRACTOR ...............................................................................................................................4-7
CONNECTING THE IMPLEMENT TO THE TRACTOR .....................................................................................4-8
Connecting the Disc Harrow ...............................................................................................................................4-8
Slow Moving Vehicle Sign...................................................................................................................................4-9
Bleeding Hydraulic Lines ....................................................................................................................................4-9
PRE-FIELD ADJUSTMENTS............................................................................................................................4-10
Side to Side Leveling ........................................................................................................................................4-10
Front to Rear Leveling ......................................................................................................................................4-10

Disc Gang Adjustment ......................................................................................................................................4-10
IN-FIELD ADJUSTMENTS ...............................................................................................................................4-11
Hydraulic Cylinder Depth Adjustment ...............................................................................................................4-12
Disc Gang Angle ...............................................................................................................................................4-12
Disc Leveling Front to Rear ..............................................................................................................................4-12
Disc Blade Replacement...................................................................................................................................4-12
PRE-OPERATION INSPECTION AND SERVICE............................................................................................4-12
Tractor Pre-Operation Inspection/Service......................................................................................................... 4-13
Implement Pre-Operation Inspection/Service ...................................................................................................4-13
DRIVING THE TRACTOR AND IMPLEMENT..................................................................................................4-17
Starting the Tractor ...........................................................................................................................................4-18
Brake and Differential Lock Setting...................................................................................................................4-18
Driving the Tractor and Implement....................................................................................................................4-19
OPERATING THE TRACTOR AND IMPLEMENT............................................................................................4-19
Field Operating Instructions ..............................................................................................................................4-19
DISCONNECTING THE IMPLEMENT FROM THE TRACTOR........................................................................4-20
IMPLEMENT STORAGE ..................................................................................................................................4-20
TRANSPORTING THE TRACTOR AND IMPLEMENT ....................................................................................4-21
Transporting on Public Roadways ....................................................................................................................4-21
Hauling the Tractor and Implement...................................................................................................................4-23
TROUBLESHOOTING......................................................................................................................................4-24
MAINTENANCE SECTION...................................................................................................5-1
LUBRICATION....................................................................................................................................................5-2
PROPER TORQUE CHART FOR FASTENERS ................................................................................................5-2

Safety Section 1-1
SAFETY SECTION

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General 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)

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Operator Safety Instructions and Practices
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 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. Stop operating if anyone comes within 25 feet of the equipment. (STL-4)
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)
P R O L O N G E D E X P OS U R E TO L OU D NOI S E M AY CA U S E
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)

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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)
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)
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. (SG-34)
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)
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)

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Equipment Operation Safety Instructions and Practices
Repeated or substantial breathing of hazardous dusts, including
crystalline silica, could cause fatal or serious respiratory disease including
silicosis. Concrete, masonry, many types of rock, and various other
materials contain silica sand. California lists respirable crystalline silica as
a substance known to cause cancer. Operation of this equipment under
certain conditions may generate airborne dust particles that could contain
crystalline silica. In those conditions, personal protective equipment
including an appropriate respirator must be used. If excessive dust is
generated, a dust collection or suppression system should also be used
during operation. (SG-41)
Be sure you have adequate knowledge of the property you will be working on. Take time to
make yourself aware of any area underwater or underground lines or cables. Contact with
buried lines or cable could result in serious injury or death. (STL-1)
In wet conditions where there is a likelihood of material collecting on the Implement, make
certain that this material is removed before traveling on public roadways. (STL-7)
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)
Operate this Implement only in conditions where you have clear visibility in daylight or with
adequate artificial lighting. Never operate in darkness or foggy conditions where you cannot
clearly see at least 100 yards in front and to the sides of the tractor and implement. 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 types of items discontinue operating this equipment.(S3PT-21)
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)

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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)
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)
Do not operate this Equipment with hydraulic oil or fuel leaking. Oil
and fuel are explosive 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 unit 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)

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Connecting or Disconnecting Implement Safety Instructions and
Practices
Maintenance and Service Safety Instructions and Practices
Cancer and Reproductive Harm www.P65Warnings.ca.gov
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)
Many varied objects, such as wire, cable, rope, or chains, can become entangled in the
rotating parts of the Implement. These objects could then swing outside the housing at
great velocity. Such a situation is extremely hazardous and could result in serious injury or
even death. Inspect the area for such objects before working in the area. Remove any such
objects from the site. Never allow the implement to contact such objects. (STL-6)
Never unhitch without using the Tongue Jack. The Tongue is very heavy. Attempting to lift
the Tongue without using the Tongue Jack could cause strains or other injury. Allowing the
tongue to fall suddenly and unexpectedly could result in crushing injury. Use the Tongue
Jack for lifting the Implement only. Overloading the Tongue Jack can cause failure with
possible serious bodily injury or even death. (STI-04)
Always maintain the safety signs in good readable condition. If the safety signs are missing,
damaged, or unreadable, obtain and install replacement safety signs immediately. (SG-5)
Do not modify or alter this Implement. Do not permit anyone to modify or alter this
Implement, any of its components or any Implement function. (SG-8)

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Ensure any remote starting system is inoperative before servicing or cleaning the machine.
Inadvertent engine start up could result in entanglement or runover causing serious injuries
or death. (SSB-17)
Use extreme care when climbing onto the Equipment to perform repairs, maintenance, and
cleaning. Use proper stands and ladders to access areas that cannot be reached from
ground level. Slipping and falling off the Equipment can cause serious injury or death. (SSB-
25)
Never work under the Implement, the framework, or any lifted
component unless the Implement is securely supported or blocked up
to prevent sudden or inadvertent falling which could cause serious
injury or even death. (SG-14)
Never attempt to lubricate, adjust, or remove material from the Implement while it is in
motion or while tractor engine is running. (SG-20)
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. (SG-21)
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. (SG-35)
Use caution and wear protective gloves when handling sharp objects such as blades,
knives, and 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)
Exercise care when handling the discs. Disc blades are SHARP and HEAVY. Wear gloves
at all time to protect your hands. (STL-10)
Do not use your hands or feet to clean the disc gangs. The discs are sharp and serious
injures could result from inadvertent contact with the discs. Never attempt to stand on the
discs, tires, or frame members of the implement. (STL-11)

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Transporting Safety Instructions and Practices
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. (STI-01)
Only tow the Implement behind a properly sized and equipped Tractor
which 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 speeds over 20 MPH. (STI-06)
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 of the public roadway and traffic can result in serious injury or
even death. (STI-10)
Lock the disc gangs in the raised position before transporting the Implement. Serious
Implement and/or road damage could result from unintentional dropping of the discs gangs.
Be sure to pin the tractor drawbar rigid in the center position and properly attach the
Implement safety tow chain. (STL-9)
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. (SG-6)

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Transport only at speeds where you can maintain control of the
equipment. Serious accidents and injuries can result from operating this
equipment at high 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 proper 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
transport speed not to exceed 20 mph (30 kph) for transporting this equipment.
Test the equipment at a slow speed in turns. Increase the speed through the turn only after
you determine that the equipment can be operated 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 turning speed for you and this equipment before
operating on roads or uneven ground.
Only transport the Tractor and Implement at the speeds which allow you to properly control
the equipment.
Be aware of the operating conditions. Do not operate the Tractor with weak or faulty brakes
or worn tires. 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)

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Concluding Safety Instructions and Practices
PARTS INFORMATION
Bush Hog products are designed utilizing specifically matched system components to ensure optimum
equipment performance. These parts are made and tested to Bush Hog specifications. Non-genuine "will fit"
parts do not consistently meet these specifications. The use of “will fit” parts may reduce equipment
performance, void warranties, and present a safety hazard. Use genuine Bush Hog parts for economy and
safety. (SPBH-2)
SEE YOUR BUSH HOG DEALER
In addition to the design and configuration of this Implement, including Safety Signs and Safety Equipment,
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. (SG-18)

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Decal Location
ITEM PART NO. QTY TYPE DESCRIPTION
1. 50072042 1 NAME Model Decal DHP8
50072040 1 NAME Model Decal DHP10
50072053 1 NAME Model Decal DHP12
2. 50057097 1 CAUTION Multi Hazard
3. 90960BH 1 WARNING Multi Hazard
4. 50031212 2 REFLECT Amber Reflector
5. 50031213 2 REFLECT Red Reflector
6. 50065309 3 LOGO Bush Hog Logo
7. 00725746 1 PELIGRO Spanish Translation
8. N/A 1 SERIAL PLT Serial Number Plate
9. 00789085C 1 ---------------- Canister (Operator’s Manual Inside)
10. 94359 1 REFLECT SMV Sign
11. D1064 1 IMPORTANT 20 MPH Speed
12. D960 1 WARNING Proposition 65 (Not Shown)
13. D1085 1 --------------- Park on Level Ground
Max 10% Ground Speed
Note: BUSH HOG supplies safety decals on this product to promote safe operation. Damage to the decals
may occur while in shipping, use or reconditioning. BUSH HOG 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 BUSH HOG dealer to order replacement decals.

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Decals

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FEDERAL LAWS AND REGULATIONS
This section is intended to explain in broad terms the concept and effect of federal laws and regulations
concerning employer and employee equipment operators. This section is not intended as a legal
interpretation of the law and should not be considered as such.
Employer-Employee Operator Regulations
U.S. Public Law 91-596 (The Williams-Steiger Occupational and Health Act of 1970) OSHA
This Act Seeks:
“...to assure so far as possible every working man and woman in the nation safe and healthful working
conditions and to preserve our human resources...”
DUTIES
Sec. 5 (a) Each employer-
(1) shall furnish to each of his employees employment and a place of employment which are free from
recognized hazards that are causing or are likely to cause death or serious physical harm to his employees;
(2) shall comply with occupational safety and health standards promulgated under this Act.
(b) Each employee shall comply with occupational safety and health standards and all rules, regulations and
orders issued pursuant to this Act which are applicable to his own actions and conduct.
OSHA Training Requirements
Title 29, Code of Federal Regulations Part 1928.57(a)(6). www.osha.gov
Operator instructions. At the time of initial assignment and at least annually thereafter, the employer shall
instruct every employee who operates an agricultural tractor and implements in the safe operating practices and
servicing of equipment with which they are or will be involved, and of any other practices dictated by the work
environment.
Keep all guards in place when the machine is in operation;
Permit no riders on equipment
Stop engine, disconnect the power source, and wait for all machine movement to stop before servicing,
adjusting, cleaning or unclogging the equipment, except where the machine must be running to be properly
serviced or maintained, in which case the employer shall instruct employees as to all steps and procedures
which are necessary to safely service or maintain the equipment.
Make sure everyone is clear of machinery before starting the engine, engaging power, or operating the
machine.
Employer Responsibilities:
To ensure employee safety during Tractor and Implement operation, it is the employer’s responsibility to:
1. Train the employee in the proper and safe operation of the Tractor and Implement.
2. Require that the employee read and fully understand the Tractor and Implement Operator’s manual.
3. Permit only qualified and properly trained employees to operate the Tractor and Implement.
4. Maintain the Tractor and Implement in a safe operational condition and maintain all shields and guards on the equip-
ment.
5. Ensure the Tractor is equipped with a functional ROPS and seat belt and require that the employee operator
securely fasten the safety belt and operate with the ROPS in the raised position at all times.
6. Forbid the employee operator to carry additional riders on the Tractor or Implement.
7. Provide the required tools to maintain the Tractor and Implement in a good safe working condition and provide the
necessary support devices to secure the equipment safely while performing repairs and service.
8. Require that the employee operator stop operation if bystanders or passersby come within 300 feet.
Child Labor Under 16 Years of Age
Some regulations specify that no one under the age of 16 may operate power machinery. It is your
responsibility to know what these regulations are in your own area or situation. (Refer to U.S. Dept. of Labor,
Employment Standard Administration, Wage & Home Division, Child Labor Bulletin #102.)

Introduction Section 2-1
© 2021 Alamo Group Inc.
INTRODUCTION SECTION

INTRODUCTION
DHP8, DHP10, DHP12 05/21 Introduction Section 2-2
© 2021 Alamo Group Inc.
INTRODUCTION
These Disc Harrows are 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 Implement using standard and optional equipment. The Parts Manual is
designed to familiarize the owner/operator with replaceable parts on the Implement. This manual provides
exploded assembly drawings of each implement component illustrating each piece and the corresponding part
number.
Careful use and timely service save extensive repairs and costly downtime losses. The Operation and
Maintenance Sections of the manual train the owner/operator how to work the Implement correctly and attend
to appropriate maintenance. The Trouble Shooting Guide helps diagnose difficulties with implement 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
should know these Safety Messages before assembly and be aware of the hazards of operating this
implement 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.
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.