®
BUSH HOG
Model SM 60
Side Mount Rotary Cutter
Operator’s Manual
l
OPERATION MAINTENANCE
1007
$4.00
97701
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Side Mount Rotary Cutter
Models SM60R, SM160R
Operator’s Manual
TABLE OF CONTENTS
SECTION/PARA
PAGE
SECTION/PARA
PAGE
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Dealer Preparation Check List . . . . . . . . . . . .3
Safety Precautions . . . . . . . . . . . . . . . . . . . . .4
4-3 Recommended Hydraulic Oil . . . . . .12
4-4 Blade Holder Removal . . . . . . . . . . .13
4-5 Blade Holder Installation . . . . . . . . .13
4-6 Blade Replacement . . . . . . . . . . . . .13
4-7 Cable Adjustment . . . . . . . . . . . . . .13
4-8 Adjusting Hydraulic Pressure . . . . . .13
4-9 Changing Blade Rotation . . . . . . . . .13
4-10 Troubleshooting . . . . . . . . . . . . . . . .14
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
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
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
5-6 Optional Valve Mounting
Bracket Installation . . . . . . . . . . . . .19
5-7 Hitch Pin Orientation . . . . . . . . . . . .19
Safety Decal . . . . . . . . . . . . . . . . . . . . . . . . .20
Torque Specifications . . . . . . . . . . . . . . . . . .22
IV MAINTENANCE . . . . . . . . . . . . . . . . . . . .11
4-1 Maintenance Check List . . . . . . . . . .11
4-2 Lubrication . . . . . . . . . . . . . . . . . . . .11
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 Hog 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.
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LIMITED WARRANTY
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
Bush Hog warrants to the original purchaser of any new Bush Hog equipment, purchased from an
authorized Bush Hog 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 Hog 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 Hog dealer during regular working hours. Bush Hog 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 Hog’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 Hog; 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 Hog.
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 Hog have been used in connection with the unit, if, in the sole judge-
ment of Bush Hog such use affects its performance, stability or reliability.
4. If the unit has been altered or repaired outside of an authorized Bush Hog dealership in a manner
which, in the sole judgement of Bush Hog, 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 BUSH HOG IS AUTHORIZED TO CHANGE THIS LIM-
ITED WARRANTY IN ANY WAY OR GRANT ANY OTHER WARRANTY UNLESS SUCH CHANGE IS MADE
IN WRITING AND SIGNED BY BUSH HOG’S SERVICE MANAGER, POST OFFICE BOX 1039, SELMA,
ALABAMA 36702-1039.
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
Record the model number, serial number and date
MODEL NUMBER
purchased. This information will be helpful to your
dealer if parts or service are required.
SERIAL NUMBER
MAKE CERTAIN THE WARRANTY REGISTRATION
CARD HAS BEEN FILED WITH BUSH HOG/
SELMA, ALABAMA
DATE OF RETAIL SALE
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DEALER PREPARATION CHECK LIST
SM60 ROTARY CUTTER
BEFORE DELIVERING MACHINE — The following check list should be completed.
Use the Operator’s Manual as a guide.
r 1. Assembled completed.
r 2. Gearbox filled with oil.
r 3. All fittings lubricated.
r 4. All shields in place and in good condition.
r 5. All fasteners torqued to specifications given in Torque Chart.
r 6. Slip clutches have been checked for proper operation.
r 7. All decals in place and readable. (See Decal Page)
r 8. Overall condition good (i.e. paint, welds)
r 9. Operators manual has been delivered to owner and he has been instructed
on the safe and proper use of the cutter.
r 10. Purchaser or dealer elects to delete deflectors. (front belting, rear bands, front
and rear chains)
WARNING
For Non-Agricultural use, OSHA, ASAE, SAE and ANSI
standards require the use of Chain Guards or other protective
guards at all times. Bush Hog 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
THIS CHECKLIST 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
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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
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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
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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 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 Regulations
Current OSHA 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.
EMPLOYEE TRACTOR OPERATING INSTRUCTIONS:
5. Watch where you are going, especially at row
ends, on roads, and around trees.
1. Securely fasten your seat belt if the tractor has a
ROPS.
6. Do not permit others to ride.
2. Where possible, avoid operating the tractor near
ditches, embankments, and holes.
7. Operate the tractor smoothly - no jerky turns,
starts, or stops.
3. Reduce speed when turning, crossing slopes, and
on rough, slick, or muddy surfaces.
8. Hitch only to the drawbar and hitch points recom-
mended by tractor manufacturers.
4. Stay off slopes too steep for safe operation.
9. When tractor is stopped, set brakes securely and
use park lock if available.
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 & Home Division, Child Labor Bulletin #102.)
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SECTION I
INTRODUCTION AND DESCRIPTION
and banks. It is to be used on tractors weighing
1-1 INTRODUCTION
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.
We are pleased to have you as a Bush Hog 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 Hog dealer.
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.
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
Figure 1-1 Major Components
Return Line Filter
Hydraulic Tank
Counterweight
Box
Hydraulic Motor
Spindle Housing
Cutter Deck
Parking Stand
Hydraulic Pump
Head Pivot Cylinder
Safety Chains
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Fig. 1-2 Hydraulic Circuit (Cast Iron Pump & Motor)
Motor
1102 RPM at
540 RPM
Filter
10 Micron
with 15 PSI Bypass
Relief Valve
3200 PSI
Suction Strainer
SECTION II
PREPARATION FOR USE
2-1 MOUNTING CUTTER ON TRACTOR
A. Check air pressure in tractor tires.
Pump 21.4 GPM
at 540 PTO RPM
CAUTON
IT IS CRITICAL FOR STABILITY THAT
TRACTOR TIRES CARRY PROPER PRES-
SURE. REFER TO TRACTOR OPERATOR’S
MANUAL.
TABLE 1-1 SPECIFICATIONS
(For Cast Iron Pump & Motor Only)
B. Connect cutter to tractor 3-point hitch. Adjust
stabilizer bars, sway blocks, or chains. Refer to
tractor operator’s manual.
MODEL NUMBER
SM60R
SM160R
1000 rpm
19.1 gpm
1182 rpm
Required PTO Speed 540 rpm
CAUTON
Pump Output
Motor Speed
21.4 gpm
1101 rpm
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.
Blade Tip Speed
17,300
ft./min.
18,570
ft./min.
Blade Type
1/2” x 3”
Dble. Edge
1/2” x 3”
Dble. Edge
Cutting Width
60”
60”
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.
Max. Reach from
Center of Tractor
145”
145”
Transport Width
Weight
120-1/2”
1580 lbs.
120-1/2”
1580 lbs.
35 gal.
Hydraulic Oil Capacity 35 gal.
Maximum Hydraulic
System Pressure
3200 psi
3200 psi
D. Connect hoses to hydraulic quick disconnects
on rear of tractor.
Hitch Size
Cat. II Std.
Cat. II & III
Quick Hitch
Cat. II Std.
Cat. II & III
Quick Hitch
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.
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Fig. 2-3
Pivot Linkage
F. Pull driveline apart. Attach the outer (female)
section to the tractor PTO shaft and the inner (male)
section to the pump input shaft. Pull on each drive-
line section to make sure yokes lock into place.
G. Hold driveline sections parallel to each other to
determine if driveline is too long. (Fig. 2-4) If drive-
line must be shortened, perform steps “D”
through “H” in paragraph 2-2.
H. Position implement at point with greatest dis-
tance between pump input shaft and PTO shaft.
I. Hold driveline halves parallel to each other
and check for minimum of 6 inches (15 cm) over-
lap. (Fig. 2-1)
Pin Storage Hole
Transport Lock Pin
Figure 2-1
Overlap Minimum
Q. If equipped with optional valve stand, adjust to
desired working position.
R. Raise cutter deck and install transport lock pin
before traveling. (Fig. 2-3)
NOTE
It is recommended that front end ballast
(weights) be added to tractor for stabilization. In
some uses, added stabilization may be gained
by weighting left rear wheel heavier than right
rear wheel. Do not exceed tractor ballast rating.
Consult your tractor dealer.
J. Apply multi-purpose grease to inside of outer
(female) driveline section. Assemble driveline and
install on machine and implement. Pull on each driv-
eline section to make sure yokes lock into place.
K. Raise implement off ground. Pin parking stand
in the up position. (Fig. 2-2)
2-2 DRIVELINE MODIFICATION
Figure 2-2 Parking Stand In Up Position
IMPORTANT
IT IS EXTREMELY IMPORTANT THAT DRIVELINE
MATCH THE TRACTOR BEING USED. IF UNIT IS
ATTACHED ON ANOTHER TRACTOR, DRIVELINE
MUST BE CHECKED FOR CORRECT LENGTH.
FAILURE TO MATCH DRIVELINE TO TRACTOR
WILL CAUSE FAILURE TO THE PUMP.
Due to the many variations in tractor/implement
hitch points and corresponding differences in dis-
tances between tractor PTO shafts and implement
input shafts, drivelines may need to be shortened as
follows:
A. Attach implement to tractor 3-point hitch.
B. Raise and lower implement to determine the
shortest distance between the tractor PTO shaft and
the pump input shaft. Stop tractor leaving imple-
ment in position of shortest distance. Block imple-
ment in position.
C. Pull driveline apart. Attach the outer (female)
section to the tractor PTO shaft and the inner (male)
section to the pump input shaft. Pull on each drive-
line section to make sure yokes lock into place.
D. Hold driveline halves parallel to each other to
determine amount to be removed. Measure approxi-
mately 3 in. (76 mm) back from the opposite univer-
sal joint shield and mark the free end of the shield.
Do this for each section. (Fig. 2-4)
L. Remove transport lock pin located at deck pivot
linkage and insert into storage holes. (Fig. 2-3)
WARNING
STAY CLEAR OF DECK DURING AND AFTER
REMOVAL OF LOCK PIN. AIR INHYDRAULIC
LINES COULD ALLOW CUTTER DECK TO
FALL, CAUSING POSSIBLE INJURY.
M. Position cutter deck straight out (parallel to
ground) and approximately 2 inches (51 mm) from
ground.
N. Adjust cutter deck front to rear using top link of
3-point hitch. Rear of cutter deck should be 1-2
inches (25-51 mm) higher than front.
O. Adjust lower 3-point hitch arms to level cutter
deck sliding beam right to left.
E. Clamp the end of driveline in a vice. Cut off
shield at point it was marked.
F. Using the cut off section of shield as a guide,
cut the shaft the same amount. (Fig. 2-6)
P. Adjust 3-point hitch position control to stop at
present height. This will prevent accidental dragging
of sliding beam.
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G. Repeat steps “E” and “F” to other driveline sec-
tion.
H. De-burr the ends of the drivelines and clean
away all chips and filings. (Fig. 2-7)
I. Apply grease to inside of outer (female) driveline
section. Reassemble driveline and attach to tractor
and implement. Pull on driveline section to make
sure yokes lock into place.
J. Raise and lower implement to check for proper
operation.
Figure 2-4
Figure 2-5
Figure 2-6
Figure 2-7
SECTION III
OPERATING PROCEDURES
3-1 TRACTOR REQUIREMENTS AND
RECOMMENDATIONS
WARNING
WHEN CUTTING WITH ANY SIDE MOUNT
ROTARY CUTTER, IT IS LIKELY THAT SOME
DEBRIS WILL BE THROWN TOWARD OPER-
ATION. IT IS HIGHLY RECOMMENDED THAT
OPERATOR BE PROTECTED BY ROLLOVER
PROTECTIVE SYSTEM (ROPS) ENCLOSED
CAB AND CUTTER DECK BE ENCLOSED BY
FACTORY APPROVED PERMANENT BANDS
OR SAFETY CHAINS. THE OPERATOR
SHOULD WEAR SAFETY GLASSES AND
SAFETY (HARD) HAT FOR PERSONAL PRO-
TECTION.
3-1.1 Requirements
The tractor shall weigh a minimum of 6000 lbs.
(2722 kg) not including ballast to prevent tractor
upset. A PTO rating of not less than 50 horsepower
is required. The 3-point hitch shall have stabilizer
bars, sway blocks, chains or equivalent to prevent
mower swaying. Tractor rear wheel base (outside of
tire to outside of tire) shall not exceed 92 inches
(233.7 cm).
3-1.2 Recommendations
3-2 OPERATION
Tractor should have front end ballast (weights) to
help prevent front end skidding. Tractor should be
equipped with Rollover Protective System (ROPS)
and a seat belt used. Check chains for 3-point hitch
are recommended on tractors without position con-
trol stop adjustment to prevent accidental dragging
of slide assembly on ground.
A. Perform BEFORE EACH USE maintenance
listed in Table 4-1.
B. Make certain parking stand is pinned in the
up position. (Fig. 2-2)
C. Remove deck transport lock pin and place in
storage holes. (Fig. 2-3)
9
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WARNING
WARNING
ALL ROTARY CUTTERS HAVE THE ABILITY TO
DISCHARGE OBJECTS AT HIGH SPEEDS,
WHICH COULD RESULT IN SERIOUS INJURY TO
BYSTANDERS OR PASSERS-BY.
KEEP CLEAR OF MACHINE WHEN RAISING
AND LOWERING THE CUTTER HEAD.
D. Place cutter deck in desired working position.
E. Engage PTO drive with tractor at idle speed.
Allow 2-3 minutes for hydraulic fluid to warm up.
THEREFORE, 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, SAFE-
TY CHAINS, OR OTHER FACTORY APPROVED
SAFETY SHIELDS THAT ARE IN GOOD REPAIR.
DANGER
KEEP HANDS AND FEET FROM UNDER CUT-
TER AT ALL TIMES TO AVOID SERIOUS
INJURY.
3-3 REVERSING BLADE ROTATION
Some cutting operations may require a counter-
clockwise blade rotation. This may be achieved by
replumbing the reversible motor. Replumbing pro-
cedures are given in paragraph 4-9.
F. Set tractor throttle for tractor/implement PTO
speed rating (540 or 1000 rpm).
WARNING
WARNING
IT IS RECOMMENDED THAT TRACTOR BE
EQUIPPED WITH ROLLOVER PROTECTIVE
SYSTEM (ROPS) AND THAT A SEAT BELT
BE USED BY THE OPERATOR FOR ALL
MOWING OPERATIONS.
DO NOT OPERATE CUTTER WITH COUNTER-
CLOCKWISE BLADE ROTATION UNLESS CUT-
TER DECK IS EQUIPPED WITH SAFETY CHAINS
AND THE OPERATOR WEAR SAFETY GLASSES
AND SAFETY (HARD) HAT. SAFETY CHAINS
WILL REDUCE AMOUNT OF DEBRIS THROWN
TOWARD OPERATOR. IT IS HIGHLY RECOM-
MENDED THAT OPERATOR BE PROTECTED
WITH ROLLOVER PROTECTIVE SYSTEM (ROPS)
ENCLOSED CAB AND THAT SEAT BELT BE
USED FOR ALL MOWING OPERATIONS.
G. Place tractor in gear and begin cutting. Do not
exceed 3 mph forward speed. Use caution when
working along a ditch. If cutter contacts ground,
encounters thick brush, or hits an obstacle, it may
cause tractor front wheels to slide into ditch. For this
reason it is recommended, when cutting in a ditch
where obstacles (i.e. stumps, rocks) cannot be seen,
that the cutter deck be adjusted 2-3 inches above
normal cutting height. Do not stall cutter repeated-
ly or operate in stalled position as overheating
will occur.
3-4 PARKING
A. Apply tractor parking brake.
B. Disengage PTO drive.
C. Slide cutter deck in.
D. After all blade motion has stopped, raise and
pin cutter deck in the travel position. (Fig. 2-3)
IMPORTANT
WHEN USED ON TRACTORS WEIGHING MORE
THAN 10,000 LBS. (4536 KG), CARE MUST BE
USED TO PREVENT BENDING THE SLIDE
ASSEMBLY IF CUTTER DECK STRIKES AN
IMMOVABLE OBJECT.
WARNING
KEEP CLEAR OF MACHINE WHEN RAISING
AND LOWERING THE CUTTER HEAD.
E. Pin stand in the down position. (Fig. 3-1)
F. Lower implement to rest on ground.
G. Shut down tractor.
The cutter deck pivot cylinder is a single-acting
cylinder having hydraulic pressure only for rais-
ing the cutter deck. When working on steep banks
with the cutter on the uphill side of tractor, the cutter
deck can be raised high enough to go over the cen-
ter of gravity. If this happens, the tractor will have to
be driven to more level ground to lower deck. This
condition should be avoided if possible.
Figure 3-1 Parking Stand
Always be aware that cutter deck and counter-
weight box may extend beyond tractor. This is
especially important when working along roads and
traveling through gates and around buildings. A
slow moving vehicle (SMV) sign and tractor warning
lights are recommended for working along highways.
A bracket is provided on weight box for SMV sign.
Stand In Down (Parked) Position
10
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neutral position before disconnecting lines.
E. Remove valve kit from tractor (if used).
F. Disconnect implement from 3-point hitch and
driveline from PTO shaft.
G. Clean debris from cutter deck to prevent corro-
sion.
H. Oil all pivot points and cable sheaves.
I. Wearing gloves and using an oil soaked rag,
wipe down all hoses and cables.
3-5 STORAGE
A. Apply light coat of multi-purpose grease to slid-
ing assemblies.
B. Perform steps “A” through “G” in paragraph 3-4.
C. Relieve hydraulic pressure by shifting imple-
ment control valve levers back and forth.
D. Disconnect implement hydraulic lines connect-
ed to tractor. Make certain tractor auxiliary valves
SECTION IV
MAINTENANCE
7. Check that cables are tight. Tighten per para-
4-1 MAINTENANCE CHECK LIST
graph 4-7.
Perform scheduled maintenance as outlined in Table
4-1. Secure machine as outlined in paragraph 3-3
before doing maintenance inspections or work. All
bolts should be torqued as recommended in Table 4-
2 unless otherwise indicated.
8. Inspect blades for wear. Replace if necessary
per paragraph 4-6. Always replace both blades
with a match pair. Use only genuine Bush Hog
replacement parts.
9. Make certain chains and/or side bands are in
good repair to minimize potential thrown debris or
objects from cutter.
Table 4-1 Maintenance Check List
1. Check hydraulic oil level in tank. Add as neces-
sary to bring oil level to bottom of strainer. (See
paragraph 4-2 for more details.)
2. Inspect hydraulic lines and fittings for wear or
leaks. Replace only with genuine Bush Hog replace-
ment parts.
10.During operation, listen for abnormal sounds
which might indicate loose parts, damaged bear-
ings or other damage.
11.Perform BEFORE EACH USE lubrication per
paragraph 4-2.
WARNING
4-2 LUBRICATION (Refer to Fig. 4-1)
WEAR EYE PROTECTION AND USE A
PIECE OF CARDBOARD OR WOOD
RATHER THAN HANDS TO SEARCH FOR
BEFORE EACH USE
HYDRAULIC
LEAKS.
ESCAPING
1. Hydraulic Tank - Check hydraulic oil level. Fill as
necessary to bring oil level to bottom of filler
strainer or to side fill plug. Filter oil to 10 microns
before adding. See paragraph 4-3 for recom-
mended hydraulic oils.
2. PTO Driveline Universal Joints - Apply multi-
purpose grease, with grease gun.
HYDRAULIC OIL UNDER PRESSURE CAN
PENETRATE THE SKIN. IF FLUID IS
INJECTED INTO THE SKIN IT MUST BE
SURGICALLY REMOVED BY A DOCTOR
FAMILIAR WITH THIS FORM OF INJURY OR
GANGRENE MAY RESULT.
3. PTO Driveline Guard - Apply 2-3 shots of multi-
purpose grease, with a grease gun, to plastic
fitting. (1 fitting each end)
EVERY 40 HOURS
1. PTO Driveline - Disconnect PTO driveline,
separate the two sections, wipe inner (male)
section clean, and apply multi-purpose grease to
inside of outer (female) driveline section.
Reassemble and install. Pull on each driveline
section to make sure yokes lock into place.
3. Check tractor tire air pressure. It is critical for
stability that tractor tires carry proper air pres-
sure. Refer to tractor operator’s manual.
2. Slide Assemblies - Wearing gloves, clean sliding
surfaces of dirt and grease. Apply thin coat of
graphite based lubricant (preferred) or multi-
purpose grease.
4. Check blades and spindle to be sure that no
foreign objects such as wire or steel strapping
bands are wrapped around them.
3. Spindle Assembly - With cutter deck in horizontal
position, remove check plug at top of housing
and check oil level. Add EP80W-90 gear oil as
necessary to fill to check plug.
5. Check blade bolts for tightness. Tighten to 450
ft./lbs. (609.7 Nm)
6. Clean all debris from machine, especially under-
side of deck.
11
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Figure 4-1 Lubrication
Replace Yearly
Check Before Each Use
40 Hours
40 Hours
150 Hours
40 Hours
Figure 4-2 Driveline Universal Joint
Before Each Use
20 Hours
To Remove Yoke Shield:
Press all three tabs with
screwdriver and slide
cover back.
Before Each Use
EVERY 150 HOURS
1. Cables - Wearing gloves, wipe cables with an oil
soaked rag.
removing the tank lid secured by eight self-tapping
screws. A gasket is required for reassembly.
2. Spindle Assembly - Drain spindle housing. Refill
YEARLY
with EP80W-90 gear oil. Capacity is 26 fl. oz.
1. Hydraulic Tank - Drain hydraulic tank while oil is
warm.Clean suction strainer and filler
strainer with compressed air. Replace return line
filter. Refill tank with hydraulic oil. Filter oil to 10
microns before filling tank. See paragraph 4-3
for recommended hydraulic oils. Tank capacity is
35 gal. (132.5l.).
4-3 RECOMMENDED HYDRAULIC OILS
Recommended hydraulic oils are listed in Table 4-3
(page 13). Other brands may be used provided they
are equivalent. Approved hydraulic oils may be
mixed provided that anti-wear oils are mixed with
anti-wear oils. All hydraulic oils listed in Table 4-3
are anti-wear oils. Do not use motor oil or trans-
mission oil.
NOTE
The suction strainer and filler strainer are located
inside the hydraulic tank. They are accessible by
12
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D. Check to be sure that blades will swing freely.
If blades will not swing freely, remove, locate prob-
lem, and repair. Operating cutter when blades will
not swing freely will cause excessive stress and
vibration causing damage to implement.
4-4 BLADE HOLDER REMOVAL (Fig. 4-3)
WARNING
THE CUTTER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
CUTTER BEFORE WORKING UNDERNEATH.
4-7 CABLE ADJUSTMENT
A. Extend slide cylinder completely. Assure full
extension by measuring from center of mounting pin
to center of opposite mounting pin. Measurement
should be 72-3/4 in. (1847.8 mm).
B. Put slack into cables by loosening eye bolts (if
necessary).
C. Position counterweight box 1 inch (25.4 mm)
from hydraulic tank.
D. Tighten eye bolts until slack is taken out of
cables.
NOTE
The spindle is a straight splined shaft, not a
tapered shaft. Do not hit on end of spindle shaft
as this will damage spindle assembly.
A. Remove cotter pin and castle nut.
B. Pull blade holder off shaft. It may be necessary
to remove blades and pan, then remove blade hold-
er with gear puller.
Figure 4-3 Blade Holder Skid Filler Skid Shoe
4-8 ADJUSTING HYDRAULIC PRESSURE
The hydraulic pressure for the cast iron system
is preset from the factory at 3200 psi. If a
hydraulic pressure adjustment is necessary, contact
your authorized Bush Hog dealer.
WARNING
DO NOT ATTEMPT TO ADJUST HYDRAULIC
SYSTEM PRESSURE. AN INCORRECT
ADJUSTMENT COULD CREATE EXTREMELY
HIGH PRESSURES RESULTING IN PERSON-
AL INJURY AND EQUIPMENT DAMAGE.
Chain
Guard
Assembly
4-9 CHANGING BLADE ROTATION
Lower Shaft Nut
(Fig. 4-4)
To change the direction of blade rotation perform the
following procedures:
4-5 BLADE HOLDER INSTALLATION
A. If blades were removed, perform steps “C”
and “D” in paragraph 4-6 to reinstall blades and pan.
B. Assemble blade holder and castle nut onto
spindle shaft. Tighten nut to 300 ft./lbs. (406 Nm).
C. Insert cotter pin.
WARNING
DO NOT OPERATE CUTTER WITH
COUNTERCLOCKWISE BLADE ROTATION
UNLESS CUTTER DECK IS EQUIPPED WITH
SAFETY CHAINS AND THE OPERATOR
WEARS SAFETY GLASSES AND SAFETY
(HARD) HAT. SAFETY CHAINS WILL
REDUCE AMOUNT OF DEBRIS THROWN
TOWARD OPERATOR. IT IS HIGHLY
RECOMMENDED THAT OPERATOR BE PRO-
TECTED WITH ROLLOVER PROTECTIVE
SYSTEM (ROPS) ENCLOSED CAB AND THAT
SEAT BELT BE USED FOR ALL MOWING
OPERATIONS.
4-6 BLADE REPLACEMENT
WARNING
THE CUTTER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
CUTTER BEFORE WORKING UNDERNEATH.
It is not necessary to remove the complete blade
holder assembly to replace the blades. Blade bolts
are accessible through a hole in the top of the cutter
deck. Blades should only be replaced in matched
pairs. Use only genuine Bush Hog replacements
parts.
A. Remove hydraulic pressure and return lines
from connections on motor.
B. Remove hydraulic fittings from both sides of
motor.
A. Remove nuts from blade bolts.
C. Remove bolts retaining motor to spindle hous-
ing.
B. Inspect blade bolt shoulder for wear. Replace if
necessary.
C. Assemble new blades and pan to blade holder
using blade bolts, nuts and lockwashers. Tighten
nuts to 450 ft./lbs. (610 Nm).
13
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Figure 4-4 Hydraulic Motor
Return Line Hose
Pressure LIne
Hydraulic Fittings
Spindle Housing
Motor
contamination such as pump failure. This requires
removal and individual flushing and cleaning of all
components and lines that were exposed to the
contaminated oil flow. Flushing of the system
components should be done with a suitable sol-
vent or diesel fuel. Clean the suction strainer,
replace the return line filter, and refill tank with new
hydraulic oil.
D. Turn motor 180º. Reinstall bolts retaining motor
to spindle housing.
E. Reinstall hydraulic fittings, and hoses. Replace
fitting O-rings as necessary.
4-10 TROUBLESHOOTING
Cleanliness is of primary importance for obtaining
satisfactory life of hydraulic components. The life of
hydraulic components is dependent upon the
degree of contamination in the hydraulic oil.
During usage, proper oil filling and servicing of fil-
ters, breather, tank, etc., cannot be over empha-
sized.
Troubleshooting procedures are listed in Table 4-4.
If the problem cannot be solved or replacement
parts are necessary, contact your authorized Bush
Hog dealer. Please have ready your machine
name, serial number, model number, purchase
date, and exact cause or description of problem.
The hydraulic system must be cleaned after a major
Table 4-3 List of Recommended Hydraulic Oils
Hydraulic Oil Manufacturer
AW46 Mobil
Manufacturer
Chevron
Gulf
Hydraulic Oil
DTE-25
Harmony 46AW
Rando HD46
AW46
Union 76
Exxon
Hyd. Oil AW215
Magnas A15
Nutoh 46
Texaco
Citgo
Exxon
Shell
Tellus 46 HY Oil 46
Standard
EP Hyd. Oil #1
14
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Table 4-4 General Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
1. Hydraulic Pump Noisy
Cavitation
Check condition of suction strainer and return
line filter. Clean or replace as necessary.
Check for clogged or restricted inlet line to
pump.
Check for loose fittings on suction line.
Clean hydraulic tank breather cap.
Areation
Check all connections on inlet side of pump.
Pour hydraulic fluid over suspected leak. If
noise stops, the leak has been found.
Fill hydraulic tank to bottom of filler strainer.
Check condition of pump shaft seal.
Overhaul or replace.
Pump worn or damaged
Pressure too high
2. Hydraulic fluid
overheated
Contact authorized Bush Hog dealer.
Fluid dirty or fluid level low
Clean or replace filter and strainer. Add fluid
bring up to bottom of filler strainer.
(above 200º F [93ºC])
Hydraulic fluid incorrect
viscosity.
Check fluid. Should a change of hydraulic
fluid be required, flush entire system and
change filters before adding new fluid.
Continuously stalling cutter
See Item 3
Hydraulic fluid bypassing
internally due to worn pump,
motor, or relieve valve.
Overhaul or replace faulty component.
3. Cutter stalls
continuously
Low hydraulic pressure
Cutting height too low.
PTO speed too slow
Contact authorized Bush Hog dealer
Increase cutting height.
Increase to implement PTO speed rating.
Use lower gear.
Tractor forward speed too
fast.
4. Cutter deck will not
pivot down.
Tractor on incline.
Move tractor to level position
15
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SECTION V
ASSEMBLY
CAUTON
THE FOLLOWING SAFETY PRECAUTIONS SHOULD BE THOROUGHLY UNDERSTOOD BEFORE
ATTEMPTING MACHINE ASSEMBLY.
1. Wear personal protective equipment such as, but not limited to protection for eyes, ears, feet, hands, lungs and
head when assembling the equipment. Do not wear loose clothing or jewelry that may catch on equipment
moving parts.
2. Do not lift heavy parts or assemblies. Use crane, jack, tackle, fork trucks or other mechanical devices.
3. Select an area for assembly that is clean and free of any debris which might cause persons working on
the assembly to trip.
4. Arrange parts to be assembled neatly in the work area and have tools or other mechanical assisting
devices in easy reach.
5. Inspect all parts and assemblies thoroughly and remove any sharp edges, grease, oil or dirt which might
cause pieces to slip when handling.
6. Preview the assembly instructions in your operator’s manual before proceeding further.
7. If the assembly instructions call for parts or assemblies to be blocked up, use only blocking material that is
in good condition and is capable of handling the weight of the assembly to be blocked. Also, insure that
the blocking material is on a clean, dry surface.
8. Never put hands or any other part of body under blocked up assemblies if at all possible.
9. Always wear goggles or safety glasses when hammering, grinding, or drilling metal parts.
10. If the assembly calls for welding or cutting, be sure that there are no flammable materials close at hand
and that bystanders have taken necessary precautions.
AFTER COMPLETING ANY ASSEMBLY STEP, THOROUGHLY READ THE NEXT STEP IN THE ASSEMBLY
INSTRUCTIONS BEFORE PROCEEDING WITH THAT STEP.
11. After completing assembly, thoroughly inspect the machine to be sure that all nuts, bolts, hydraulic fittings
or any other fastened assemblies have been thoroughly tightened.
12. After completing assembly, be sure that all safety locking devices or guards are in place.
13. Before operating the machine, thoroughly read the operation section of this manual.
14. Before operating the machine, read the maintenance section of this manual to be sure that any parts
requiring lubrication such as gearboxes are full to avoid any possible damage.
BEFORE OPERATING THE EQUIPMENT, IF YOU HAVE ANY QUESTIONS REGARDING THE PROPER
ASSEMBLY OR OPERATION, CONTACT YOUR AUTHORIZED BUSH HOG DEALER OR REPRESENTATIVE.
16
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roll pins. It may be necessary to remove cylinder
port caps to extend cylinder. With port caps
removed, watch out for oil spraying out of cylinder
ports.
E. Remove cover plate and gasket from spindle
housing on cutter deck. Remove O-ring gasket
packed inside spindle housing and retain for motor
installation.
F. Fill spindle housing with 26 fl. oz. of EP80W-
90 gear oil or until oil reaches check plug.
G. Mount hydraulic motor to spindle housing using
O-ring gasket to seal. Fasten with nuts, bolts and
lockwashers removed from cover plate.
H. Assemble hydraulic valve kit (Fig. 5-1) or tractor
kit (Fig. 5-2). Use pipe joint compound on pipe fit-
tings only. Do not use thread tape. Do not over-
tighten fittings.
5-1 BASIC MACHINE ASSEMBLY
CAUTON
BASE UNIT IS EXTREMELY TOP
HEAVY WHEN DISCONNECTED
FROM CUTTER DECK AND SHOULD
BE MOVED ONLY BY CONNECTING
TO TRACTOR 3-POINT HITCH. DO
NOT REMOVE WOODEN SUPPORT
UNLESS UNIT IS CONNECTED TO
TRACTOR 3-POINT HITCH OR OVER-
TURNING WILL RESULT.
A. Connect base unit to tractor 3-point hitch.
B. Remove wooden support.
C. With cutter deck flat on ground, connect it to
base unit using pivot pin, two washers and roll pins.
D. Connect lift linkage to cutter deck with pin and
I. Check hydraulic oil level. Fill as needed to bring
oil level to bottom of filler strainer. See paragraph 4-
3 for compatible hydraulic oils.
90° Elbow Adaptor 3/4” JIC to 3/4” ORB (Not Shown)
or
90° Elbow Adaptor 3/4” JIC to 1/2” NPT
Figure 5-1 Hydraulic Valve Kit
Hyd. Hose 120”
Hyd. Valve
90° Elbow
90° Elbow
7/8” ORB to 3/4” JIC
1-1/16” ORB to 3/4” JIC
Straight Adaptor
7/8” ORB to 9/16” JIC
Hyd. Hose 108”
90° Elbows
Hyd. Fitting
90° Elbow
9/16” JIC Male to Female
Hyd. Hose 144”
Hyd. Hose 96”
90° Elbow
Breather Plug
Slide Cyl.
(Shipped in Cylinder, not Part of Hyd. KIt
Fold Cyl.
Figure 5-2 Tractor Hydraulic Kit
Straight Adaptor 1/2” NPT to 9/16” JIC
or
Straight Adaptor 3/4” ORB to 9/16” JIC
Hyd. Hose 108”
Hyd. Hose 108”
90° Elbows
Hyd. Hose 48”
90° Elbow
Slide Cyl.
Breather Plug
(Sjipped in Cylinder, not Part of Hyd. Kit)
Fold Cyl.
17
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CAUTON
Figure 5-3
Side Band
USE OF THIS MACHINE ON TOO SMALL A
TRACTOR CAN CAUSE TRACTOR UPSET.
DO NOT USE THIS MACHINE ON A TRACTOR
WEIGHING LESS THAN 6000 LBS. (2722 kg),
NOT INCLUDING BALLAST. IT IS RECOM-
MENDED THAT FRONT BALLAST BE USED
FOR ADDED STEERING STABILITY. THIS
MACHINE REQUIRES 50 PTO HORSEPOWER.
5-2 OPTIONAL SAFETY CHAIN
INSTALLATION
A. Place cutter deck in the travel (stored) position.
Insert transport lock pin.
B. Remove the skid shoes from the side bands.
C. Position chain guard assembly so that mount-
ing holes align with holes in deck.
Chain Guard Assy.
Skid Shoe
D. Fasten using 3/8 x 1-1/4” bolts, flatwashers,
lockwashers, and nuts. (Fig. 5-3)
E. Align skid shoes with holes in chain guard
assembly and side bands.
F. Fasten skids into position with 3/8 x 1-1/4”
clipped share bolts, flatwasher, lockwashers and
nuts.
Figure 5-4
G. If chain assemblies are used on the front and
rear of the cutter deck, skid fillers should be installed
between the front and rear skid shoes. (Fig. 4-3)
Cutter Deck Lip
5-3 BELTING INSTALLATION
A. Align belting with holes in lip of cutter deck.
B. Fasten with 3/8 x 1-1/4” bolts, flatwashers and
locknuts. (Fig. 5-4)
Belting
5-4 OPTIONAL SIDEWHEEL
INSTALLATION
A. Position sidewheel on cutter deck as shown
(Fig. 5-5)
B. Fasten sidewheel assembly to cutter deck using
3/8 x 3” bolts and locknuts through deck braces and
3/8 x 1-1/4” bolts and locknuts through side band.
Figure 5-5
Mounting
Bracket
Deck Brace
The sidewheel is adjustable in one inch increments
for a cutting height of 1-6 inches. To adjust, remove
bolts securing wheel assembly to mounting brackets.
Reassemble installing bolts in holes corresponding
to desired cutting height.
When cutter is equipped with both sidewheel and
tailwheel, the adjustment of one can affect adjust-
ment of the other. When cutting a ditch or bank,
sidewheel and tailwheel can be adjusted indepen-
dently as needed.
Side Band
Side wheel Assembly
18
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5-5 OPTIONAL TAILWHEEL
INSTALLATION
A. Position mounting bracket against underside of
frame as shown. (Fig. 5-6)
Figure 5-6 Tailwheel Assembly
Apply Decal
B. Position mounting plate on top side of frame
and fasten with four 5/8 x 7-1/2” bolts and locknuts.
C. Apply warning decal to top of tailwheel beam.
ADJUSTMENT
Spacer Collars
The tailwheel is adjustable in one inch increments
using collars on tailwheel spindle. To adjust, raise
cutter and securely block in position. While holding
wheel, remove pin from spindle. Remove wheel
assembly from mounting bracket. Stack spacers on
spindle as necessary to achieve desired height.
Large spacers are two inches, small spacers are one
inch.
Mounting Bracket
Tailwheel
Slide spindle back into bracket placing remaining
collars on top of spindle. Install retaining pin. Note
that any change in tailwheel height should be fol-
lowed by a 3-point hitch top link adjustment to keep
cutter level.
Disconnect Hose and Install this 90° Adaptor. Reconnect Hose
3/4” JIC Female to 3/4” JIC Male
To Source
3/8” Hex Nut
Figure 5-7
3/8” Lockwasher
Valve Mounting
WARNING
Remove 90° Elbow &
Install Straight Adaptor
7/8” ORB x 3/4” JIC
TAILWHEEL IS NOT TO BE USED TO SUP-
PORT CUTTER AT TRANSPORT SPEEDS.
MAXIMUM SPEED FOR TAILWHEEL IS 6
MPH. EXCEEDING THIS SPEED COULD
CAUSE EQUIPMENT FAILURE WITH
POSSIBLE INJURY TO OPERATOR.
Valve Plate
To Source
Note that when cutter is equipped with both side-
wheel and tailwheel, the adjustment of one can
affect adjustment of the other. If the cutting height is
higher than 4 inches, cutter must be totally support-
ed by tractor 3-point lift. When cutting a ditch or
bank, sidewheel and tailwheel can be adjusted inde-
pendently as needed.
3/8” x 2-1/2”
Capscrew
(3 Furnished)
3/8” x 1-1/2”
Capscrew
Base Plate
3/8” Flatwasher
3/8” Lockwasher
3/8” Hex Nut
Tractor Fender
5-6 OPTIONAL VALVE MOUNTING
BRACKET INSTALLATION (Fig. 5-7)
A. Place bottom bracket at desired mounting loca-
tion. Mark 2-4 holes (as needed) for drilling using
bracket as pattern. Drill holes using 13/32 drill bit.
B. Mount lower bracket using four 3/8 x 1-1/2”
bolts, nuts, flatwashers and lockwashers.
Figure 5-8 Hitch
Cat. III Quick Hitch Location
C. Attach valve to top bracket using three 3/8” x 2-
1/2” bolts, nuts and lockwashers.
D. Mount top bracket to bottom bracket using
quarter turn fasteners. Insert quarter turn fastener
into clip-on receptacle and turn 90 degrees.
E. Install hydraulic fittings as shown in Fig. 5-7 (if
necessary).
Hitch Pin
5-7 HITCH PIN ORIENTATION (Fig. 5-8)
Insert lower hitch pins through hitch lugs on frame
according to category hitch of your tractor. Locate
bolt and bushing as shown in illustration.
Hitch Lugs
Cat. II Quick Hitch and
Cat. II Standard Hitch Bushing Location
19
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SAFETY DECALS
To promote safe operation, Bush Hog supplies safety decals on all products manufactured. Because damage
can occur to safety decals either through shipment, use or reconditioning, Bush Hog will, upon request, provide
safety decals for any of our products in the field at no charge. Contact your authorized Bush Hog dealer for
more information.
82683
50029419
50029419
78786
78608
20
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SAFETY DECALS CONTINUED
83374
83373
83377
82617
83375
21
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TORQUE SPECIFICATIONS
Proper toque for American fasteners used on Bush Hog equipment.
Recommended Torque in Foot Pounds (Newton Meters).*
AMERICAN
Bolt Head Markings
B O LT D IA M ETER
(IN .) “B ” A N D
TH R EA D SIZE
W R EN C H
SIZE (IN .) “A ”
SA E
G R A D E 2
SA E
G R A D E 5
SA E
G R A D E 8
7/16
7/16
1/4 - 2O UNC
1/4 - 28 UNF
5/16 - 18 UNC
5/16 - 24 UNF
3/8 - 16 UNC
3/8 - 24 UNF
7/16 - 14 UNC
7/16 - 20 UNF
1/2 - 13 UNC
1/2 - 20 UNF
9/16 - 12 UNC
9/16 - 18 UNF
5/8 - 11 UNC
5/8 - 18 UNF
3/4 - 10 UNC
3/4 - 16 UNF
7/8 - 9 UNC
6 (7)
8 (11)
10 (13)
12 (16)
14 (18)
6 (8)
1/2
11 (15)
17 (23)
25 (33)
SAE Grade 2
(No Dashes)
1/2
13 (17)
19 (26)
27 (37)
9/16
20 (27)
31 (42)
44 (60)
9/16
23 (31)
35 (47)
49 (66)
5/8
32 (43)
49 (66)
70 (95)
5/8
36 (49)
55 (75)
78 (106)
3/4
49 (66)
76 (103)
106 (144)
120 (163)
153 (207)
172 (233)
212 (287)
240 (325)
376 (509)
420 (569)
606 (821)
668 (905)
909 (1232)
995 (1348)
1019 (1381)
1288(1745)
1444 (1957)
1817 (2462)
2013 (2728)
2382 (3228)
2712 (3675)
3161 (4283)
3557 (4820)
3/4
55 (75)
85 (115)
7/8
70 (95)
109 (148)
122 (165)
150 (203)
170 (230)
266 (360)
297 (402)
430 (583)
474 (642)
644 (873)
705 (955)
721 (977)
795 (1077)
890 (1206)
1120 (1518)
1241 (1682)
1470 (1992)
1672 (2266)
1950 (2642)
2194 (2973)
7/8
79 (107)
97 (131)
110 (149)
144 (195)
192 (260)
166 (225)
184 (249)
250 (339)
274 (371)
280 (379)
354 (480)
397 (538)
500 (678)
553 (749)
655 (887)
746 (1011)
870 (1179)
979 (1327)
SAE Grade 5
(3 Dashes)
15/16
15/16
1-1/8
1-1/8
1-5/16
1-5/16
1-1/2
1-1/2
1-1/2
1-11/16
1-11/16
1-7/8
1-7/8
2-1/16
2-1/16
2-1/4
2-1/4
7/8 - 14 UNF
1 - 8 UNC
1 - 12 UNF
Wrench
Size “A”
1 - 14 UNF
SAE Grade 8
(6 Dashes)
1-1/8 - 7 UNC
1-1/8 - 12 UNF
1-1/4 - 7 UNC
1-1/4 - 12 UNF
1-3/8 - 6 UNC
1-3/8 - 12 UNF
1-1/2 - 6 UNC
1-1/2 - 12 UNF
Proper torque for metric fasteners used on Bush Hog equipment.
Recommended torque in foot pounds (newton Meters).*
METRIC
—WRENCH
SIZE
BOLT
DIA.
ASTM
4.6
ASTM
8.8
ASTM
9.8
ASTM
10.9
(mm) “A”
(mm) “B”
8
5
1.8 (2.4)
3 (4)
5.1 (6.9)
8.7 (12)
21.1 (29)
42 (57)
6.5 (8.8)
11.1 (15)
27 (37)
10
13
16
18
21
24
30
33
36
41
46
6
8
7.3 (10)
14.5 (20)
25 (34)
40 (54)
62 (84)
122 (165)
Wrench
Size “A”
10
12
14
16
20
22
24
27
30
53 (72)
8.8
74 (100)
118 (160)
167 (226)
325 (440)
443 (600)
563 (763)
821 (1112)
1119 (1516)
73 (99)
93 (126)
116 (157)
181 (245)
148 (201)
230 (312)
449 (608)
611 (828)
778 (1054)
1138 (1542)
1547 (2096)
Numbers appearing on bolt heads
indicate ASTM class.
211 (286)
418 (566)
*U se 75% of the specified torque value for
plated fasteners. U se 85% of the speci-
fied torque values for lubricated fasteners.
22
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