Alamo BUSH HOG RMB 1660 User manual

© 2022 Alamo Group Inc.
RMB 1660
Published 01/22 Part No. 50068816
OPERATOR’S MANUAL
BUSH HOG®
2501 Griffin Ave.
Selma, AL 36703
334-874-2700
www.bushhog.com
REAR MOUNTED BOOM MOWER
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_B
Important Operating
and Safety
Instructions are
found in the Mower
Safety Video that can
be instantly
accessed on the
internet at:
www.algqr.com/bve
$0.00

In order to reduce accidents and enhance the safe operation of mowers, Bush Hog 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 Bush Hog 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 Bush Hog.
If you would like a VHS video tape of the video, please email AEMVi[email protected] or Fax AEM VHS
Video at [phone] 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.
The information and material listed above along with this Operator’s Manual can assist you in meeting the OSHA
requirement for Operator annual training.
OSHA TRAINING REQUIREMENTS
The following training requirements have been taken from 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 or implement 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.

Bush Hog will provide
one (1) AEM Mower Safety Practices Video
Please Send Me: VHS Format – AEM/FEMA Mower Operator Safety Video
DVD Format – AEM/FEMA Mower Operator Safety Video
Mower Operator’s Manual
AEM Mower Operator’s Safety Manual
Requester Name:_________________________________Phone:___________________________
Requester Address: ___________________________________________
City:_____________________________________
State: ____________________________________
Zip Code:_________________________________
Mower Model:___________________________Serial Number:_____________________________
Date Purchased:__________________________Dealer Salesperson:_________________________
Dealership Name:________________________ Dealership Location:________________________
Mail to:
AEM Video Services
1502 E. Walnut Street
Seguin, TX 78155
Or Fax to:
[phone]
Or Email to:
AEMV[email protected]

Bush Hog To the Owner/Operator/Dealer
This Operator's Manual is an integral part of the safe operation of this machine and must be maintained with the
implement at all times. A Manual canister is provided on the implement where this manual can be properly stored.
If you lose or damage this manual a free replacement manual can be obtained from an authorized Bush Hog dealer
or by down loading the manual from the Bush Hog website www.bushhog.com
BEFORE YOU START! READ, UNDERSTAND, and FOLLOW the information provided in this manual, the AEM
Mower Safety manual and the tractor operator's manual carefully to learn how to operate and service your machine
properly. Failure to do so could result in personal injury to you and bystanders. All implements with moving parts
are potentially hazardous. Every effort has been made to ensure that this machine is safe, but operators must
avoid engaging in unsafe practices and follow the written instructions provided. The manufacturer has designed
this implement to be used with all its safety equipment properly attached to minimize the chance of accidents.
SAFETY FIRST. Completely read and understand the safety section of this manual before operating this
equipment. Do not allow anyone to operate this equipment who has not fully read and understood this manual.
Contact your Dealer to explain any instructions that you do not fully understand.
The care you give your Bush Hog Implement will greatly determine your satisfaction with its performance and its
service life. Carefully read and follow the instructions in this manual to provide you with a thorough understanding
of your new implement and its intended use and service requirements.
All references made in this manual to right, left, front, rear, top or bottom are as viewed facing the direction of
forward travel with the implement properly attached to the tractor.
Replacement Parts information is located in a separate Parts Manual. Bush Hog 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 Bush Hog 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 Bush Hog mower parts for economy and safety.
For future reference, record your Bush Hog product model number and serial number.
Dealer Telephone Model Number
Owner Purchase Date Serial Number
SERIAL NUMBER PLATE

DEALER to CUSTOMER Pre-Delivery / Operation Instructions
Dealer should inform the Purchaser of this product of Warranty terms, provisions, and procedures that are
applicable. Dealer should also inform the Purchaser to review the contents of the Operator’s Manual including
safety equipment, safe operation and maintenance, to review the Safety Signs on the implement (and tractor if
possible) and of Purchaser’s responsibility to train his/her operators in safe operation procedures.
•IMPLEMENTS: I have explained that Deflectors, Chain Guards, or Solid Skirts must be installed and
maintained in good repair.
•DRIVELINES: I have made certain that all driveline, gearbox, and other shields are in good repair and fastened
securely in place to prevent injuries from entanglement or thrown objects.
•HYDRAULIC MACHINES: I have explained the necessity of using clean hydraulic oil, changing filters as
instructed, stopping leaks, damage caused by operating with over-heated oil, caring for hoses, using hoses of
proper rating, maintaining the specified operating pressure and the potential hazard of oil’s penetrating the
skin.
•FOLDING-TYPE IMPLEMENTS: I have explained that it is not possible to guard against thrown objects when
the head is lifted off ground and that operator is responsible to watch out for persons in the area. I have
explained that the lifted mower head or boom can contact overhead obstructions with damage to cables and
telephone lines and possible injury. I have explained that the extended head or boom or retracted boom can
contact power lines with resulting electrocution, injury or death and that operator is responsible for keeping
clear of such hazards.
PRE-DELIVERY SERVICE
CHECK AND ADJUST OR LUBRICATE AS REQUIRED
See Operator’s Manual for Details
Inspection Performed - Warranty and Safety Procedures Explained - Installation Complete
LUBRICATION & HYDRAULICS
Gearbox (Oil Levels)
Hydraulic Oil Level (External Tank)
Tractor Hydraulic Oil Level
Hydraulic Hoses (Not Kinked Tighten Connections)
Front Pump Drive (Assembly Is Tight And Shaft Properly
Aligned)
MOWER
Spindle And Motor Bolts Properly Torqued
Spindle Oil Level
Blade Carrier Bolts Properly Torqued/Retaining Pin In
Place
Mower Cutting Height And Level Adjusted
Cutting Shaft Bearings Lubricated
All Hardware Properly Torqued
Tire and Air Pressure/Lug Nuts (Correct Torque)
Wheel Bearings (Check, Grease, and Preload)
ATTACHMENTS & INSTALLATION
Deflectors Front And Rear
Shredding Attachments
Correct Blade Rotation Direction
Axle Arms And Beams
Tongue And Control Rods (Installed And Adjusted)
All Bolts - Pins And Nuts (Proper Torque)
MOWER TO TRACTOR CONNECTIONS
Draw Bar Length (Check And Set)
A-Frame Pivot & Links
Control Rods (Adjusted Equal)
Axle Height (Adjusted)
Cutting Height (Adjust)
Mount Kit-Pre-Operation Check Complete
Mower Wing (Adjust Level With The Center)
Mower Wing (Check For Proper Raising Operation)
C.V. Drivelines (Check Max Turn Radius)
Pull Type Hitch (Height Adjustment)
Mounting Hardware Properly Torqued
SAFETY ITEMS
Protective Shields (Operation And Installation)
Driveline Clutch (Torque Limiter) (Adjust And Run In)
Safety Decals (Installed)
Operator’s Manual (Supplied)
Tractor PTO Shield (Installed)
S.M.V. Emblem (Installed If Needed)
Tongue Jack (Installation and Operation)
Safety Tow Chain (Installed)
ADMA Driveline Safety Manual Supplied
AEM Mower Safety Manual (Supplied in Canister)
AEM Mower Safety Video has been shown to Purchaser

TABLE OF CONTENTS
SAFETY SECTION ..............................................................................................................1-1
GENERAL SAFETY INSTRUCTIONS AND PRACTICES .................................................................................1-2
Operator Safety ..................................................................................................................................................1-3
CRUSHING HAZARDS ......................................................................................................................................1-4
CONNECTING OR DISCONNECTING IMPLEMENT SAFETY ........................................................................1-5
THROWN OBJECTS HAZARDS .......................................................................................................................1-6
RUN OVER HAZARDS ......................................................................................................................................1-8
PTO ENTANGLEMENT HAZARDS ...................................................................................................................1-9
MOWER BLADE CONTACT HAZARDS .........................................................................................................1-10
HIGH PRESSURE OIL LEAK HAZARD ..........................................................................................................1-11
ELECTRICAL & FIRE HAZARDS ....................................................................................................................1-12
TRANSPORTING HAZARDS ..........................................................................................................................1-13
HAZARDS WITH MAINTENANCE OF IMPLEMENT ......................................................................................1-14
PARTS INFORMATION ...................................................................................................................................1-15
Decal Location .................................................................................................................................................1-16
ROTARY HEAD ...............................................................................................................................................1-20
Decal Description .............................................................................................................................................1-21
FEDERAL LAWS AND REGULATIONS ..........................................................................................................1-31
INTRODUCTION SECTION .................................................................................................2-1
Features .............................................................................................................................................................2-3
ASSEMBLY SECTION ........................................................................................................3-1
TRACTOR SELECTION ....................................................................................................................................3-2
TRACTOR PREPARATION ...............................................................................................................................3-3
Installation Instructions: Window and Door Protective Film ...............................................................................3-3
Preparation for Sealant Installation ....................................................................................................................3-5
Application of Sealant ........................................................................................................................................3-5
Wheel Width: ......................................................................................................................................................3-6
DEALER SETUP INSTRUCTIONS ....................................................................................................................3-7
STABILIZERS (3-POINT LINKAGE MODELS ONLY) .......................................................................................3-8
Standard Stabilizer Types Identification .............................................................................................................3-8
ATTACHMENT TO TRACTOR ..........................................................................................................................3-9
PTO DRIVESHAFT INSTALLATION ...............................................................................................................3-13
MACHINE ATTACHMENT ...............................................................................................................................3-14
FLAILHEAD ATTACHMENT ............................................................................................................................3-17
OIL REQUIREMENTS .....................................................................................................................................3-19
Tank .................................................................................................................................................................3-19
FITTING CONTROL UNIT IN CAB ..................................................................................................................3-19
RUNNING UP PROCEDURE ..........................................................................................................................3-20
STORAGE .......................................................................................................................................................3-21
SUBSEQUENT ATTACHMENT TO IDENTICAL TRACTOR ..........................................................................3-21
.........................................................................................................................................................................3-21
DECK STOP ....................................................................................................................................................3-22
OPERATION SECTION .......................................................................................................4-1
OPERATOR REQUIREMENTS .........................................................................................................................4-4
TRACTOR REQUIREMENTS ............................................................................................................................4-5

ROPS and Seat Belt ..........................................................................................................................................4-5
Operator Thrown Object Protection ...................................................................................................................4-5
Tractor Lighting and SMV Emblem ....................................................................................................................4-6
Tractor Ballast ....................................................................................................................................................4-6
Tractor Safety Devices .......................................................................................................................................4-7
Tractor Horsepower ...........................................................................................................................................4-7
3-Point Hitch ......................................................................................................................................................4-7
Hydraulics ..........................................................................................................................................................4-7
Front End Weight ..............................................................................................................................................4-8
Power Take Off (PTO) .......................................................................................................................................4-8
GETTING ON AND OFF THE TRACTOR .........................................................................................................4-8
Boarding the Tractor ..........................................................................................................................................4-9
Dismounting the Tractor ....................................................................................................................................4-9
STARTING THE TRACTOR ............................................................................................................................4-10
PRE-OPERATION INSPECTION AND SERVICE ...........................................................................................4-11
Tractor Pre-Operation Inspection/Service ........................................................................................................4-11
Boom Unit Pre-Operation Inspection and Service ...........................................................................................4-12
MACHINE CONTROLS ...................................................................................................................................4-20
Cable Controls - Identification & Function ........................................................................................................4-20
Lever Functions ...............................................................................................................................................4-21
Rotor Control ....................................................................................................................................................4-22
BREAKAWAY ..................................................................................................................................................4-23
Rotor Operating Speed ....................................................................................................................................4-24
Forward Speed ................................................................................................................................................4-24
High Voltage Cables ........................................................................................................................................4-25
Hedge Cutting Procedure ................................................................................................................................4-25
Working on Adverse Slopes .............................................................................................................................4-27
Lift Float Kit (Optional) .....................................................................................................................................4-27
DRIVING THE TRACTOR AND IMPLEMENT .................................................................................................4-28
Starting the Tractor ..........................................................................................................................................4-29
Brake and Differential Lock Setting ..................................................................................................................4-29
Driving the Tractor and Boom ..........................................................................................................................4-30
OPERATING THE TRACTOR AND IMPLEMENT ...........................................................................................4-31
Foreign Debris Hazards ...................................................................................................................................4-31
Bystanders/Passersby Precautions .................................................................................................................4-32
Engaging the Power Take Off (PTO) ...............................................................................................................4-32
Operating Speed and Ground Speed ..............................................................................................................4-33
Operating the Mower .......................................................................................................................................4-33
Operating the Attached Mower Heads .............................................................................................................4-35
Shutting Down the Attached Head ...................................................................................................................4-37
TRACTOR, BOOM, AND ATTACHED HEAD STORAGE ...............................................................................4-38
TRANSPORTING THE TRACTOR AND IMPLEMENT ...................................................................................4-38
Transport Position ............................................................................................................................................4-39
TRANSPORT POSITION-Head Attached ........................................................................................................4-40
TRANSPORT POSITION-Head Removal ........................................................................................................4-40
Transport Height ..............................................................................................................................................4-41
Transporting on Public Roadways ...................................................................................................................4-41
Hauling the Tractor and Implement ..................................................................................................................4-44
TROUBLESHOOTNG ......................................................................................................................................4-45
MAINTENANCE SECTION ..................................................................................................5-1
HAZARDS WITH MAINTENANCE OF IMPLEMENT ........................................................................................5-2
PARTS INFORMATION .....................................................................................................................................5-3
LUBRICATION INFORMATION .........................................................................................................................5-3
ROTARY HEAD LUBRICATION ........................................................................................................................5-4

PTO SHAFT INSPECTION ................................................................................................................................5-5
PTO SHAFT LUBRICATION ..............................................................................................................................5-5
PTO GEARBOX .................................................................................................................................................5-6
HYDRAULIC SYSTEM ......................................................................................................................................5-7
Oil Supply ...........................................................................................................................................................5-7
Filtration Maintenance ........................................................................................................................................5-7
HYDRAULIC HOSES .........................................................................................................................................5-8
Hose Replacement ............................................................................................................................................5-8
Hose Warranty ...................................................................................................................................................5-8
CABLES .............................................................................................................................................................5-9
CYLINDER ROD MAINTENANCE .....................................................................................................................5-9
Boom Cylinder Removal and Replacement Instructions ..................................................................................5-10
Hydraulic Component Maintenance Schedule .................................................................................................5-11
PROPER TORQUE FOR FASTENERS ..........................................................................................................5-11
FLAILHEAD .....................................................................................................................................................5-13
Flail Blades Inspection .....................................................................................................................................5-14
Blade Pins and D-Ring Inspection ...................................................................................................................5-15
Flail Axe Blades Inspection ..............................................................................................................................5-16
Flail Axe Blade Bolt Inspection ........................................................................................................................5-17
HARDWARE ....................................................................................................................................................5-18

Safety Section 1-1
© 2022 Alamo Group Inc.
SAFETY SECTION

SAFETY
RMB 1660 01/22 Safety Section 1-2
© 2022 Alamo Group Inc.
SAFETY
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.
Practice all usual and customary safe working precautions and above all---remember safety is up to YOU.
Only YOU can prevent death or serious injury from unsafe practices.
Indicates a hazardous situation that, if not avoided, WILL result in DEATH OR VERY
SERIOUS INJURY.
Indicates a hazardous situation that, if not avoided, COULD result in DEATH OR
SERIOUS INJURY.
Indicates a hazardous situation that, if not avoided, MAY result in MINOR OR
MODERATE INJURY.
Indicates information considered important, but not hazard-related (e.g. messages
relating to property damage).
NOTE: Identifies points of particular interest for more efficient and convenient operation or repair.
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 this Manual and in the Safety
Messages on the implement. Always follow the instruction in this manual
and use good common sense to avoid hazards.
Pictographs are used throughout this manual to help bring your visual
attention to safety issues.
NOTE: If you want a translation of this safety section in one of the following Languages, please contact:
Translations at 1502 E. Walnut Street Seguin, TX 78155; Fax: [phone]; Safety Section Translations
are available in Spanish, Portuguese, French, German, Russian. PN GS-01

SAFETY
RMB 1660 01/22 Safety Section 1-3
© 2022 Alamo Group Inc.
SAFETY
Operator Safety
TO AVOID DEATH OR SERIOUS INJURY DO THE FOLLOWING:
•READ, UNDERSTAND and FOLLOW Operator's Manual instructions, Warnings and Safety Messages.
•WEAR SAFETY GLASSES with side shields (marked with ANSI Z87), safety shoes, hard hat, hearing protection and gloves when
operating or repairing equipment
•WEAR appropriate breathing respirator when operating in dusty conditions to avoid respiratory diseases.
•DO NOT WEAR loose clothing or jewelry to avoid rotating parts entanglement injury.
•DO NOT USE DRUGS or ALCOHOL before or while operating equipment.
•DO NOT ALLOW anyone to operate equipment under the influence of drug or alcohol.
•CONSULT medical professional for medication impairment side effects.
•STAY CLEAR of hot surfaces such as Mufflers, hydraulic pumps, valves and tanks.
•STAY ALERT, prolonged operation can cause fatigue, STOP and REST.
GENERAL OPERATING SAFETY
VISIBILITY CONDITIONS WHEN MOWING:
•OPERATE IN DAYLIGHT or with lights that gives at least 100 yards clear vis bility.
•BE ABLE TO SEE and identify passersby, steep slopes, ditches, drop-offs, overhead obstructions, power lines, debris and foreign
objects.
• Avoid backing up while mowing, vision may be limited, severe damage or injury can occur.
• DO NOT run tractor in enclosed building without adequate exhaust ventilation.
GROUND SPEED WHEN MOWING:
•NORMAL SPEED range is between 1 to 2 mph (1-3 kph).
•ADJUST MOWING SPEED for terrain conditions and grass type, density and cut height.
•REDUCE MOWING SPEED when near steep slopes, ditches, drop-offs, overhead obstructions, power lines and to avoid debris
and foreign objects.
TRACTOR and MOWER
•DO NOT operate the tractor or mower unless the equipment is maintained and operating properly.
•DISCONTINUE OPERATION if tractor or mower electrical and hydraulic controls do no function properly.
•DISCONTINUE OPERATION of the tractor if the braking or steering systems do not function properly.
•DO NOT operate the tractor or mower if there are any hydraulic leaks.
INSECT INFESTATION
•DO NOT operate in areas where bees or insects may attack unless you WEAR PROTECTIVE CLOTHING or use enclosed tractor
cab.
PTO SPEED:
•DO NOT EXCEED IMPLEMENT RATED PTO SPEED
•AVOID exceeding rated PTO speeds that may result in broken drivelines or blade failures.
SAFETY SIGNS:
•REPLACE missing, damaged or unreadable safety signs immediately. PN OSBM-01

SAFETY
RMB 1660 01/22 Safety Section 1-4
© 2022 Alamo Group Inc.
SAFETY
CRUSHING HAZARDS
TO AVOID DEATH OR SERIOUS INJURY FROM FALLING OFF TRACTOR, EQUIPMENT RUN OVER,
ROLLOVER AND CRUSHING BY FALLING WING OR IMPLEMENT:
•USE ROPS and SEAT BELT equipped tractors for mowing operations.
•KEEP ROPS locked in up position.
•ALWAYS BUCKLE UP seat belt when operating tractor and equipment.
•ONLY OPERATE tractor and equipment while seated in tractor seat.
WHEN RAISING BOOM MOWER:
•RaiseorlowerONLY WHILE SEATED in tractor seat with seat belt buckled.
•KEEP BYSTANDERS CLEAR of area TO AVOID crushing.
•KEEP sufficient clearance around implement and wings TO AVOID contacting buildings or overhead power lines.
LIFTED Equipment can fall from mechanical or hydraulic failure or inadvertent Control Lever movement.
TO AVOID EQUIPMENT FALLING while working near or under lifted boom, components and
Mower Head:
• SECURELY SUPPORT or block up raised equipment, wings and components.
• BLOCK UP and securely support equipment before putting hands, feet or body under raised equipment or lifted compo-
nents.
• KEEP BYSTANDERS CLEAR of raised boom or mower head until securely blocked up.
WHEN PARKING Implement and Tractor:
•LOWER Mower Head to the ground or BLOCK lifted parts before leaving equipment.
•NEVER leave implement unattended in a raised position.
TO AVOID CHILDREN FALLING OFF OR BEING CRUSHED BY EQUIPMENT:
•NEVER ALLOW children to play on or around Tractor or Implement.
• DO NOT operate without operator CAB or OVERHEAD protection. Falling limbs and debris can cause injuries. PN CHBM-01

SAFETY
RMB 1660 01/22 Safety Section 1-5
© 2022 Alamo Group Inc.
SAFETY
CONNECTING OR DISCONNECTING IMPLEMENT SAFETY
TO AVOID DEATH OR SERIOUS INJURY FROM BEING CRUSHED BY TRACTOR OR
IMPLEMENT:
WHEN connecting mower head to the boom:
•KEEP BYSTANDERS AWAY from tractor and mower.
• Ensure there is enough room to lift and swing the boom without hitting objects
BEFORE connecting and disconnecting the mower head or boom:
•STOP TRACTOR ENGINE, place transmission into park, engage parking brake and remove key.
WHEN connecting and disconnecting the mower head or boom:
• DO NOT crawl or walk under raised mower head or boom. (Refer to Instructions in Operation Section)
WHEN CONNECTING IMPLEMENT DRIVELINE: (If equipped)
TO AVOID implement driveline coming loose during operation:
•LUBRICATE yoke spring locking collar to ensure it freely slides on PTO shaft.
•SECURELY seat yoke locking balls in PTO shaft groove.
•PUSH and PULL DRIVELINE on both the tractor and implement PTO SHAFTS to ensure it is SECURELY
ATTACHED.
TO AVOID broken driveline during operations:
•CHECK driveline for proper length between PTO shaft and implement gearbox shaft.(Refer to Instructions in Operation
Section)
• Drivelines too short can pull apart or disengage.
• Drivelines too long can bottom out.
• Bottoming driveline telescoping assembly will stop sliding and become solid.
• Driveline bottoming can push through support bearings and break off PTO shaft.
CONTACT DEALER if implement driveline does not match Tractor PTO shaft:
•DO NOT USE PTO ADAPTER.
Using a PTO adapter can cause:
• Excessive vibration, thrown objects, blade and implement failures by doubling operating speed.
• Increased working length exposing unshielded driveline areas and entanglement hazards. PN CDBM-01

SAFETY
RMB 1660 01/22 Safety Section 1-6
© 2022 Alamo Group Inc.
SAFETY
THROWN OBJECTS HAZARDS
ROTARY MOWERS CAN THROW OBJECTS 300 FEET OR MORE UNDER ADVERSE
CONDITIONS.
TO AVOID DEATH OR SERIOUS INJURY TO OPERATOR OR BYSTANDERS FROM THROWN OBJECTS:
• KEEP bystanders 300 feet away
STOP MOWING IF PASSERSBY ARE WITHIN 300 FEET UNLESS:
•All THROWN OBJECT SHIELDING including, Front and Rear Rubber Deflectors, Guarding, Steel Guards, Bands,
Side Skirts and Skid Shoes in place and in good condition when mowing.
• Mower is close and parallel to ground without exposing blades.
•MOWING AREA has been inspected and foreign materials and debris have been removed.
•DO NOT shred or mow loose or previously cut material if BYSTANDERS are within 300 feet.
•PASSERSBY are inside enclosed vehicle.
INSPECT AREA FOR POTENTIAL THROWN OBJECTS BEFORE MOWING:
•REMOVE debris, rocks, wire, cable, metal objects and other foreign material from area.
Wire, cable, rope, chains and metal objects can be thrown or swing outside deck with great velocity.
DO NOT allow the mower blades to contact decaying animal carcasses or other hazardous materials. The mower
blades could throw hazardous and biologic material out from under mower exposing the operator and bystanders to
health risks. Always wear required OSHA approved Personal Protective Equipment (PPE) when cleaning or
removing potentially hazardous material from equipment.
1. MARK objects that cannot be removed.
2. AVOID these objects when mowing.
HIGH GRASS and WEED AREA INSPECTION:
•INSPECT for and REMOVE any hidden large debris.
•MOW at Intermediate height.
•INSPECT and remove remaining debris.
•MOW at final height.
MOWER THROWN OBJECT SHIELDING:
•KEEP all thrown object shielding including, Front and Rear Rubber Deflectors, Guarding, Steel Guards, Bands, Side
Skirts and Skid Shoes in place and in good condition when mowing.
•DO NOT OPERATE with any thrown object shielding missing, damaged or removed.
RIGHT OF WAY (Highway) MOWING
• Stop mowing if any bystander comes within 300 feet of the mower.
• No shielding is 100% effective in preventing thrown objects. To Reduce Possibility of Injury:
1. MAINTAIN MOWER SHIELDING, side skirts, skid shoes, and blades in good operational condition,
2. RAISE CUTTING HEIGHT to 6 INCHES minimum,
3. INSPECT AREA thoroughly before mowing to REMOVE potential THROWN OBJECT HAZARDS.
4. NEVER ALLOW BLADES to CONTACT SOLID OBJECTS like wire, rocks, post, curbs, guardrails, or ground
while mowing. PN TOBM-01

SAFETY
RMB 1660 01/22 Safety Section 1-7
© 2022 Alamo Group Inc.
SAFETY
THROWN OBJECTS HAZARDS (Continued)
MOWER OPERATION:
•DO NOT exceed mower's rated Cutting Capacity or cut non-vegetative material.
•USE ENCLOSED TRACTOR CABS when two or more mowers are operating in mowing area.
• Do Not mow in areas where bees or insects may attack unless you WEAR PROTECTIVE CLOTHING or
use enclosed tractor cab.
•ADJUST mower head close and parallel to ground without exposing blades.
•ADJUST cutting HEIGHT to AVOID BLADE CONTACT with solid objects like wire, rocks, posts, curbs,
guard rails and fixed obstructions.
•CLOSE Mower door and stop operating if bystanders come within 300 feet of the mower.
• Keep mower door closed when cutting close to the ground.
• Open door only to cut large brush or tree limbs. Close door immediately after cutting limb.
•DO NOT push mower head down onto material to cut it, use the front tips of the mower blades to cut into
the material.
•DO NOT operate mower when mower is in transport position.
•STOP MOWING immediately if blades strike heavy objects, fixed structures, metal guard rails and
concrete structures:
1. BLADES CAN FAIL from impact and objects can be thrown with great velocity.
2. INSPECT and REPLACE any damaged blades.
3. CHECK blade carrier and REPLACE if damaged.
•DO NOT mow in standing water TO AVOID possible BLADE FAILURE.
•AVOID MOWING in reverse:
1. STOP PTO and back up mower.
2. LOWER mower, engage PTO and mow forward.
•DISENGAGE mower head and wait until BLADES stop rotating before raising mower to transport
position.
•DO NOT ENGAGE PTO with mower in transport position.
•STOP mowing when EXCESSIVE VIBRATION occurs:
1. STOP PTO and tractor ENGINE.
2. INSPECT mower for vibration source.
3. REPLACE any damaged parts and bent or damaged BLADES. PN TOBM-02

SAFETY
RMB 1660 01/22 Safety Section 1-8
© 2022 Alamo Group Inc.
SAFETY
RUN OVER HAZARDS
TO AVOID DEATH OR SERIOUS INJURY FROM FALLING OFF TRACTOR OR
EQUIPMENT RUN OVER:
•USE ROPS and SEAT BELT equipped tractors for mowing operations.
•KEEP ROPS locked in UP position.
•ONLY start tractor while seated in tractor seat.
•ALWAYS BUCKLE UP seat belt when operating tractor and equipment.
•ONLY OPERATE tractor and equipment while seated in tractor seat.
•NEVER ALLOW RIDERS on tractor or implement.
• When not mowing stow Boom and Mower head in transport location before moving.
WHEN MOUNTING AND DISMOUNTING TRACTOR:
•ONLY mount or dismount when tractor and moving parts are stopped.
•STOP ENGINE AND PTO, engage parking brake, lower implement, allow all moving parts to stop and
remove key before dismounting from tractor. PN ROBM-01

SAFETY
RMB 1660 01/22 Safety Section 1-9
© 2022 Alamo Group Inc.
SAFETY
PTO ENTANGLEMENT HAZARDS
KEEP AWAY FROM ROTATING DRIVELINES AND ELEMENTS TO AVOID DEATH OR SERIOUS
INJURY:
STAY AWAY and KEEP hands, feet and body AWAY from rotating blades, drivelines and parts until all moving
elements have stopped.
•STOP, LOOK and LISTEN before approaching the mower to make sure all rotating motion has stopped.
•ROTATING COMPONENTS CONTINUE to ROTATE after the PTO is shut off.
PTO SHIELDING:
TO AVOID DEATH OR SERIOUS INJURY FROM ENTANGLEMENT WHEN OPERATING IMPLEMENT:
•KEEP PTO shields, integral driveline shields and input shields installed
•DO NOT OPERATE mower without shields and guards in place or missing
•REPAIR OR REPLACE guards and shields if damaged, broken or missing
•ALWAYS REPLACE GUARDS that have been removed for service or maintenance.
• Do Not use PTO or PTO guard as a step.
TO AVOID broken driveline during operations:
•CHECK driveline for proper length between PTO shaft and implement gearbox shaft.(Refer to Instructions in
Operation Section)
• Drivelines too short can pull apart or disengage.
• Drivelines too long can bottom out.
Bottoming driveline telescoping assembly will stop sliding and become solid.
• Driveline bottoming can push through support bearings and break off PTO shaft
•AVOID sharp turns or lifting mower to heights that cause driveline "knocking".
• Lubricate driveshaft-telescoping components weekly.
CONTACT DEALER if implement driveline does not match Tractor PTO shaft:
•DO NOT USE PTO ADAPTER.
Using a PTO adapter can cause excessive vibration, thrown objects, blade and implement failures by
doubling operating speed. Increased working length exposes unshielded driveline areas. PN PE01

SAFETY
RMB 1660 01/22 Safety Section 1-10
© 2022 Alamo Group Inc.
SAFETY
MOWER BLADE CONTACT HAZARDS
KEEP AWAY FROM ROTATING BLADES TO AVOID DEATH OR SERIOUS INJURY FROM
BLADE CONTACT:
•STAY AWAY and KEEP HANDS, FEET and BODY AWAY from rotating blades, drivelines and parts until all moving
elements have stopped.
•DO NOT put hands or feet under mower decks
•STOP rotating BLADES, disengage mower switch and PTO and wait for blade to stop rotating before raising mower
head.
• DO NOT approach Sickle Bar head until Tractor Engine has been shut off.
•STOP LOOK and LISTEN before approaching the mower to make sure all rotating motion has stopped. PN MBBM-01