Bush Hog SM 60 User manual

OPERATION ll MAINTENANCE
1007 $4.00 97701
Model SM 60
Side Mount Rotary Cutter
Operator’s Manual
BUSH HOG®

CONGRATULATIONS!
You have invested in the best implement of its type on the market today.
The care you give your Bush og implement will greatly determine your satisfaction
with its performance and its service life. We urge a careful study of this manual to provide
you with a thorough understanding of your new implement before operating, as well as
suggestions for operation and maintenance.
If your manual should become lost or destroyed, Bush og will be glad to provide you with
a new copy. Order from Bush og, P. O. Box 1039, Selma, Alabama 36702-1039. Most of
our manuals can also be downloaded from our website at www.bushhog.com.
As an authorized Bush og dealer, we stock genuine Bush og parts which are
manufactured with the same precision and skill as our original equipment. Our trained
service personnel are well informed on methods required to service Bush og equipment,
and are ready and able to help you.
Should you require additional information or assistance, please contact us.
YOUR AUT ORIZED
BUS OG DEALER
BECAUSE BUS OG MAINTAINS AN ONGOING
PROGRAM OF PRODUCT IMPROVEMENT, WE
RESERVE T E RIG T TO MAKE IMPROVEMENTS IN
DESIGN OR C ANGES IN SPECIFICATIONS WIT -
OUT INCURRING ANY OBLIGATION TO INSTALL
T EM ON UNITS PREVIOUSLY SOLD.
BECAUSE OF T E POSSIBILITY T AT SOME
P OTOGRAP S IN T IS MANUAL WERE TAKEN OF
PROTOTYPE MODELS, PRODUCTION MODELS MAY
VARY IN SOME DETAIL. IN ADDITION, SOME
P OTOGRAP S MAY S OW S IELDS REMOVED
FOR PURPOSES OF CLARITY. NEVER OPERATE
T IS IMPLEMENT WIT OUT ALL S IELDS IN PLACE.

RETAIL CUSTOMER’S RESPONSIBILITY
UNDER THE BUSH HOG WARRANTY
It is the Retail Customer and/or Operator’s responsibility to read the Operator’s Manual, to operate, lubricate,
maintain and store the product in accordance with all instructions and safety procedures. Failure of the operator
to read the Operator’s Manual is a misuse of this equipment.
It is the Retail Customer and/or Operator’s responsibility to inspect the product and to have any part(s) repaired
or replaced when continued operation would cause damage or excessive wear to other parts or cause a safety
hazard.
It is the Retail Customer’s responsibility to deliver the product to the authorized Bush og Dealer, from whom
he purchased it, for service or replacement of defective parts which are covered by warranty. Repairs to be
submitted for warranty consideration must be made within forty-five (45) days of failure.
It is the Retail Customer’s responsibility for any cost incurred by the Dealer for traveling to or hauling of the
product for the purpose of performing a warranty obligation or inspection.
Side Mount Rotary Cutter
Models SM60R, SM160R
Operator’s Manual
1
TABLE OF CONTENTS
SECTION/PARA PAGE
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Dealer Preparation Check List . . . . . . . . . . . .3
Safety Precautions . . . . . . . . . . . . . . . . . . . . .4
Federal Laws and Regulations . . . . . . . . . . . .5
I INTRODUCTION & DESCRIPTION . . . . .6
1-1 Introduction . . . . . . . . . . . . . . . . . . . . .6
1-2 Description . . . . . . . . . . . . . . . . . . . . .6
II PREPARATION FOR USE . . . . . . . . . . . .7
2-1 Mounting Cutter On Tractor . . . . . . . . .7
2-2 Driveline Modification . . . . . . . . . . . . .8
III OPERATING PROCEDURES . . . . . . . . . .9
3-1 Tractor Requirements and
Recommendations . . . . . . . . . . . . . . .9
3-2 Operation . . . . . . . . . . . . . . . . . . . . . .9
3-3 Reversing Blade Rotation . . . . . . . . .10
3-4 Parking . . . . . . . . . . . . . . . . . . . . . . .10
3-5 Storage . . . . . . . . . . . . . . . . . . . . . . .11
IV MAINTENANCE . . . . . . . . . . . . . . . . . . . .11
4-1 Maintenance Check List . . . . . . . . . .11
4-2 Lubrication . . . . . . . . . . . . . . . . . . . .11
SECTION/PARA PAGE
4-3 Recommended ydraulic Oil . . . . . .12
4-4 Blade older Removal . . . . . . . . . . .13
4-5 Blade older Installation . . . . . . . . .13
4-6 Blade Replacement . . . . . . . . . . . . .13
4-7 Cable Adjustment . . . . . . . . . . . . . .13
4-8 Adjusting ydraulic Pressure . . . . . .13
4-9 Changing Blade Rotation . . . . . . . . .13
4-10Troubleshooting . . . . . . . . . . . . . . . .14
V DEALER ASSEMBLY . . . . . . . . . . . . . . .16
5-1 Basic Machine Assembly . . . . . . . . .17
5-2 Optional Safety Chain Installation . .18
5-3 Optional Belting Installation . . . . . . .18
5-4 Optional Sidehweel Installation . . . .18
5-5 Optional Tailwheel Installation . . . . .19
5-6 Optional Valve Mounting
Bracket Installation . . . . . . . . . . . . .19
5-7 itch Pin Orientation . . . . . . . . . . . .19
Safety Decal . . . . . . . . . . . . . . . . . . . . . . . . .20
Torque Specifications . . . . . . . . . . . . . . . . . .22

LIMITED WARRANTY
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
Bush og warrants to the original purchaser of any new Bush og equipment, purchased from an
authorized Bush og dealer, that the equipment be free from defects in material and workmanship for a period
of one (1) year for non-commercial, state, and municipalities’ use and ninety (90) days for commercial use from
date of retail sale. The obligation of Bush og to the purchaser under this warranty is limited to the repair or
replacement of defective parts.
Replacement or repair parts installed in the equipment covered by this limited warranty are warranted
for ninety (90) days from the date of purchase of such part or to the expiration of the applicable new equip-
ment warranty period, whichever occurs later. Warranted parts shall be provided at no cost to the user at an
authorized Bush og dealer during regular working hours. Bush og reserves the right to inspect any equip-
ment or parts which are claimed to have been defective in material or workmanship.
DISCLAIMER OF IMPLIED WARRANTIES & CONSEQUENTIAL DAMAGES
Bush og’s obligation under this limited warranty, to the extent allowed by law, is in lieu of all war-
ranties, implied or expressed, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE and any liability for incidental and consequential damages with respect to
the sale or use of the items warranted. Such incidental and consequential damages shall include but not be
limited to: transportation charges other than normal freight charges; cost of installation other than cost
approved by Bush og; duty; taxes; charges for normal service or adjustment; loss of crops or any other loss of
income; rental of substitute equipment, expenses due to loss, damage, detention or delay in the delivery of
equipment or parts resulting from acts beyond the control of Bush og.
THIS LIMITED WARRANTY SHALL NOT APPLY:
1. To vendor items which carry their own warranties, such as engines, tires, and tubes.
2. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident.
3. If parts not made or supplied by Bush og have been used in connection with the unit, if, in the sole judge-
ment of Bush og such use affects its performance, stability or reliability.
4. If the unit has been altered or repaired outside of an authorized Bush og dealership in a manner
which, in the sole judgement of Bush og, affects its performance, stability or reliability.
5. To normal maintenance service and normal replacement items such as gearbox lubricant, hydraulic fluid,
worn blades, or to normal deterioration of such things as belts and exterior finish due to use or
exposure.
6. To expendable or wear items such as teeth, chains, sprockets, belts, springs and any other items that in the
company’s sole judgement is a wear item.
NO EMPLOYEE OR REPRESENTATIVE OF BUS OG IS AUT ORIZED TO C ANGE T IS LIM-
ITED WARRANTY IN ANY WAY OR GRANT ANY OT ER WARRANTY UNLESS SUC C ANGE IS MADE
IN WRITING AND SIGNED BY BUS OG’S SERVICE MANAGER, POST OFFICE BOX 1039, SELMA,
ALABAMA 36702-1039.
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
Record the model number, serial number and date
purchased. This information will be helpful to your
dealer if parts or service are required.
MAKE CERTAIN T E WARRANTY REGISTRATION
CARD AS BEEN FILED WIT BUS OG/
SELMA, ALABAMA
MODEL NUMBER
SERIAL NUMBER
DATE OF RETAIL SALE
2

DEALER PREPARATION C ECK LIST
SM60 ROTARY CUTTER
BEFORE DELIVERING MAC INE — The following check list should be completed.
Use the Operator’s Manual as a guide.
r1. Assembled completed.
r2. Gearbox filled with oil.
r3. All fittings lubricated.
r4. All shields in place and in good condition.
r5. All fasteners torqued to specifications given in Torque Chart.
r6. Slip clutches have been checked for proper operation.
r7. All decals in place and readable. (See Decal Page)
r8. Overall condition good (i.e. paint, welds)
r9. Operators manual has been delivered to owner and he has been instructed
on the safe and proper use of the cutter.
r10. Purchaser or dealer elects to delete deflectors. (front belting, rear bands, front
and rear chains)
WARNING
For Non-Agricultural use, OS A, ASAE, SAE and ANSI
standards require the use of Chain Guards or other protective
guards at all times. Bush og strongly recommends the use
of such guards for Agricultural uses as well, to reduce the risk
of property damage, serious bodily injury or even death from
objects thrown out by or from contact with the cutting blades.
Dealer’s Signature
Purchaser’s Signature
T IS C ECKLIST TO REMAIN IN OWNER’S MANUAL
It is the responsibility of the dealer to complete the procedures listed
above before delivery of this implement to the customer.
3

IMPORTANT SAFETY PRECAUTIONS
This symbol is used to call attention to safe-
ty precautions that should be followed by
the operator to avoid accidents. When you
see this symbol, carefully read the message
that follows and heed its advice. Failure to
comply with safety precautions could result
in serious bodily injury.
In addition to the design and configuration of equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence and proper training of personnel in the operation,
transport, maintenance and storage of equipment. Lack of attention to safety can result in accident, per-
sonal injury, reduction of efficiency and worst of all—loss of life. Watch for safety hazards and correct defi-
ciencies promptly. Use the following safety precautions as a general guide to safe operations when using
this machine. Additional safety precautions are used throughout this manual for specific operating and
maintenance procedures. Read this manual and review the safety precautions often until you know the limitations.
1. Read the Operator’s Manual. Failure to read the Operator’s Manual is considered a misuse of this
equipment.
2. Become familiar with all the machine’s controls and all the caution, warning and danger decals affixed
to the machine before attempting to start or operate.
3. Before starting or operating the machine, make a walk around inspection and check for obvious
defects such as loose mounting bolts and damaged components. Correct any deficiency before starting.
4. Do not allow children to operate the cutter. Do not allow adults to operate it without proper instruction.
5. Do not carry passengers.
6. Keep the area of operation clear of all persons, particularly small children and pets. The operator
should cease mowing whenever anyone comes within the operating area.
7. Clear the work area of objects which might be picked up and thrown.
8. Wear eye protection and use a piece of cardboard or wood rather than hands to search for hydraulic
leaks. Escaping hydraulic oil under pressure can penetrate skin. If fluid is injected into the skin, it must
be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may
result.
9. Do not operate without all guards and shields in place and in good condition.
10. Stop PTO, lower implement to ground, place tractor transmission in neutral or park, set parking brake,
stop tractor engine, remove ignition key and wait for all motion to completely stop before leaving the
tractor.
11. Keep hands and feet away from blades.
12. This cutter is not to be operated along highways or in any area where people may be present unless
all sides of the unit are enclosed by permanent bands, safety chains or other factory approved safety
shields that are in good repair.
13. Wear personal protective equipment such as, but not limited to, protection for eyes, ears, feet, hands
and head when operating or repairing the equipment. Do not wear loose clothing or jewelry that may
catch on equipment moving parts.
14. When performing adjustments or maintenance on the cutter, first lower it to the ground or block it
securely at a workable height.
15. Never stand between tractor and cutter while tractor is being backed to the cutter hitch.
16. Reduce speed when transporting cutter to avoid bouncing and momentary loss of steering.
17. Use tractor flashing warning lights, day or night, when transporting cutter on road or highways unless
prohibited by law.
18. In the event that someone other than yourself will operate this equipment we firmly suggest that all
SAFETY references be discussed prior to operation.
19. It is recommended that tractor be equipped with Rollover Protective System (ROPS) or ROPS enclosed
cab and seat belt.
4

IMPORTANT SAFETY PRECAUTIONS
This symbol is used to call attention to safe-
ty precautions that should be followed by
the operator to avoid accidents. When you
see this symbol, carefully read the message
that follows and heed its advice. Failure to
comply with safety precautions could result
in serious bodily injury.
In addition to the design and configuration of equipment, hazard control and accident prevention are
dependent upon the awareness, concern, prudence and proper training of personnel in the operation,
transport, maintenance and storage of equipment. Lack of attention to safety can result in accident, person-
al injury, reduction of efficiency and worst of all—loss of life. Watch for safety hazards and correct deficien-
cies promptly. Use the following safety precautions as a general guide to safe operations when using this
machine. Additional safety precautions are used throughout this manual for specific operating and mainte
nance procedures. Read this manual and review the safety precautions often until you know the limitations.
1. Read the Operator’s Manual. Failure to read the Operator’s Manual is considered a misuse of this
equipment.
2. Become familiar with all the machine’s controls and all the caution, warning and danger decals affixed
to the machine before attempting to start or operate.
3. Before starting or operating the machine, make a walk around inspection and check for obvious
defects such as loose mounting bolts and damaged components. Correct any deficiency before starting.
4. Do not allow children to operate the cutter. Do not allow adults to operate it without proper instruction.
5. Do not carry passengers.
6. Keep the area of operation clear of all persons, particularly small children and pets. The operator
should cease mowing whenever anyone comes within the operating area.
7. Clear the work area of objects which might be picked up and thrown.
8. Wear eye protection and use a piece of cardboard or wood rather than hands to search for hydraulic
leaks. Escaping hydraulic oil under pressure can penetrate skin. If fluid is injected into the skin, it must
be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may
result.
9. Do not operate without all guards and shields in place and in good condition.
10. Stop PTO, lower implement to ground, place tractor transmission in neutral or park, set parking brake,
stop tractor engine, remove ignition key and wait for all motion to completely stop before leaving the
tractor.
11. Keep hands and feet away from blades.
12. This cutter is not to be operated along highways or in any area where people may be present unless
all sides of the unit are enclosed by permanent bands, safety chains or other factory approved safety
shields that are in good repair.
13. Wear personal protective equipment such as, but not limited to, protection for eyes, ears, feet, hands
and head when operating or repairing the equipment. Do not wear loose clothing or jewelry that may
catch on equipment moving parts.
14. When performing adjustments or maintenance on the cutter, first lower it to the ground or block it
securely at a workable height.
15. Never stand between tractor and cutter while tractor is being backed to the cutter hitch.
16. Reduce speed when transporting cutter to avoid bouncing and momentary loss of steering.
17. Use tractor flashing warning lights, day or night, when transporting cutter on road or highways unless
prohibited by law.
18. In the event that someone other than yourself will operate this equipment we firmly suggest that all
SAFETY references be discussed prior to operation.
19. It is recommended that tractor be equipped with Rollover Protective System (ROPS) or ROPS enclosed
cab and seat belt.
4

IMPORTANT FEDERAL LAWS AND REGULATIONS* CONCERNING
EMPLOYERS, EMPLOYEES AND OPERATIONS.
*(This section is intended to explain in broad terms the concept and effect of the following federal laws and
regulations. It is not intended as a legal interpretation of the laws and should not be considered as such).
U.S. Public Law 91-596 (The Williams-Steiger Occupational and ealth Act of 1970) OS A
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 Regulations
Current OS A regulations state in part: “At the time of initial assignment and at least annually thereafter,
the employer shall instruct every employee in the safe operation and servicing of all equipment with which
the employee is, or will be involved.” These will include (but are not limited to) instructions to:
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.
Child Labor Under 16 Years Old
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 & ome Division, Child Labor Bulletin #102.)
EMPLOYEE TRACTOR OPERATING INSTRUCTIONS:
1. Securely fasten your seat belt if the tractor has a
ROPS.
2. Where possible, avoid operating the tractor near
ditches, embankments, and holes.
3. Reduce speed when turning, crossing slopes, and
on rough, slick, or muddy surfaces.
4. Stay off slopes too steep for safe operation.
5. Watch where you are going, especially at row
ends, on roads, and around trees.
6. Do not permit others to ride.
7. Operate the tractor smoothly - no jerky turns,
starts, or stops.
8. itch only to the drawbar and hitch points recom-
mended by tractor manufacturers.
9. When tractor is stopped, set brakes securely and
use park lock if available.
5

SECTION I
INTRODUCTION AND DESCRIPTION
1-1 INTRODUCTION
We are pleased to have you as a Bush og cus-
tomer. Your Side Mount Rotary Cutter, Model
SM60,has been carefully designed to assure maxi-
mum service with minimum down time. This manual
is provided to give you the necessary operating and
maintenance instructions for keeping your rotary cut-
ter in top operating condition. Please read this man-
ual thoroughly. Understand what each control is for
and how to use it. Observe all safety precautions
decaled on the machine and noted throughout the
manual to insure safe operation of the equipment. If
any assistance or additional information is needed,
contact your local authorized Bush og dealer.
1-2 DESCRIPTION
The Side Mount Rotary Cutter (Fig. 1-1) is an agri-
cultural implement designed primarily for cutting
brush up to 1 inch (2.5cm) in diameter along ditches
and banks. It is to be used on tractors weighing
a minimum of 6000 lbs. (2722 kg) not including
ballast and having a minimum of 50 PTO horse-
power. Two models are available; the model
SM60R, requiring 540 rpm PTO speed and the
model SM160R, requiring a 1000 rpm PTO speed.
Front and rear discharge shields are standard on
each.
The cutter is all hydraulically powered as shown in
Fig. 1-2. A hydraulic gear pump is driven by the
tractor PTO. The 35 gallons of oil are delivered to
the motor at a maximum of 3200 PSI on a cast
iron pump and motor. The hydraulic oil is filtered
by a suction strainer mounted inside the tank and a
canister type return line filter. Each filter is equipped
with a bypass to prevent pumpt cavitation, should it
become clogged. Slide cylinder and deck pivot
cylinders are controlled by the tractor auxiliary
hydraulic system.
6
Return Line Filter
ydraulic Tank
Counterweight
Box
ydraulic Pump
Parking Stand
Figure 1-1 Major Components
ead Pivot Cylinder
Safety Chains
ydraulic Motor
Spindle ousing
Cutter Deck

TABLE 1-1 SPECIFICATIONS
(For Cast Iron Pump & Motor Only)
MODEL NUMBER
SM60R SM160R
Required PTO Speed 540 rpm 1000 rpm
Pump Output 21.4 gpm 19.1 gpm
Motor Speed 1101 rpm 1182 rpm
Blade Tip Speed 17,300 18,570
ft./min. ft./min.
Blade Type 1/2” x 3” 1/2” x 3”
Dble. Edge Dble. Edge
Cutting Width 60” 60”
Max. Reach from
Center of Tractor 145” 145”
Transport Width 120-1/2” 120-1/2”
Weight 1580 lbs. 1580 lbs.
ydraulic Oil Capacity 35 gal. 35 gal.
Maximum ydraulic 3200 psi 3200 psi
System Pressure
itch Size Cat. II Std. Cat. II Std.
Cat. II & III Cat. II & III
Quick itch Quick itch
7
Motor
1102 RPM at
540 RPM
Relief Valve
3200 PSI
Pump 21.4 GPM
at 540 PTO RPM
Suction Strainer
Filter
10 Micron
with 15 PSI Bypass
SECTION II
PREPARATION FOR USE
2-1 MOUNTING CUTTER ON TRACTOR
A. Check air pressure in tractor tires.
IT IS CRITICAL FOR STABILITY THAT
TRACTOR TIRES CARRY PROPER PRES-
SURE. REFER TO TRACTOR OPERATOR’S
MANUAL.
B. Connect cutter to tractor 3-point hitch. Adjust
stabilizer bars, sway blocks, or chains. Refer to
tractor operator’s manual.
USE OF THIS MACHINE ON TOO SMALL A
TRACTOR CAN CAUSE TRACTOR UPSET.
DO NOT USE THIS MACHINE ON A TRAC-
TOR WEIGHING LESS THAN 6000 LBS.
(2722 KG) NOT INCLUDING BALLAST. IT IS
RECOMMENDED THAT FRONT BALLAST
BE USED FOR ADDED STEERING STABILI-
TY. THIS MACHINE REQUIRES 50 PTO
HORSEPOWER.
C. If valve kit is used, mount valves on tractor as
desired. If optional valve mounting brackets are
used, attach brackets and valve to tractor as
described in paragraph 5-6. Make certain all hoses
are free of sharp bends, creases, or moving parts. It
is recommended that valves be mounted on right
side of tractor.
D. Connect hoses to hydraulic quick disconnects
on rear of tractor.
E. Raise and lower implement to determine the
shortest distance between the tractor PTO shaft and
pump input shaft. Stop tractor leaving implement in
position of shortest distance. Block implement in
position.
CAUTON
CAUTON
Fig. 1-2 ydraulic Circuit (Cast Iron Pump & Motor)