Bush Hog 280 Brush Cutter User Manual

BUSH HOG
®
280 SERIES
ROTARY CUTTERS
Operator’s Manual
ASSEMBLY ● OPERATION ● MAINTENANCE
199
$4.00
Part No. 95355
CONGRATULATIONS!
You have invested in the best implement of its type on the market today.
The care you give your Bush Hog 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 Hog will be glad to provide you with
a new copy. Order from Bush Hog, P. O. Box 1039, Selma, Alabama 36702-1039.
As an authorized Bush Hog dealer, we stock genuine Bush Hog 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 Hog equipment,
and are ready and able to help you.
Should you require additional information or assistance, please contact us.
YOUR AUTHORIZED
BUSH HOG DEALER
BECAUSE BUSH HOG MAINTAINS AN ONGOING
PROGRAM OF PRODUCT IMPROVEMENT, WE
RESERVE THE RIGHT TO MAKE IMPROVEMENTS IN
DESIGN OR CHANGES IN SPECIFICATIONS WITHOUT INCURRING ANY OBLIGATION TO INSTALL
THEM ON UNITS PREVIOUSLY SOLD.
BECAUSE OF THE POSSIBILITY THAT SOME
PHOTOGRAPHS IN THIS MANUAL WERE TAKEN OF
PROTOTYPE MODELS, PRODUCTION MODELS MAY
VARY IN SOME DETAIL. IN ADDITION, SOME
PHOTOGRAPHS MAY SHOW SHIELDS REMOVED
FOR PURPOSES OF CLARITY. NEVER OPERATE
THIS IMPLEMENT WITHOUT ALL SHIELDS IN PLACE.
1
280 SERIES ROTARY CUTTERS
TABLE OF CONTENTS
SECTION/PARA
PAGE
Warranty.................................................3
Dealer Preparation Check List ...............4
Safety Precautions .................................5
Federal Laws and Regulations...............6
I. INTRODUCTION & DESCRIPTION ......7
1-1 Introduction ......................................7
1-2 Description.......................................7
II. PREPARATION FOR USE .....................8
2-1 Attaching To Tractor ........................8
III.OPERATING INSTRUCTIONS ............10
3-1 General Safety ...............................10
3-2 Adjusting for Work..........................10
3-2.1 Cutting Height Adjustment ..........10
3-3 Operation .......................................10
3-4 Transporting ...................................11
IV.MAINTENANCE ...................................11
4-1 Maintenance Check List ................11
4-2 Lubrication .....................................11
SECTION/PARA
PAGE
4-3 Blade Holder Assembly
Removal and Installation...............12
4-4 Blade Replacement ......................12
4-5 Slip Clutch Operational Check ......12
4-6 Slip Clutch Adjustment..................13
4-7 Troubleshooting.............................13
V. ASSEMBLY .........................................15
5-1 3 - Point Lift Models (285 & 286) .......15
5-2 3 - Point Lift Model (287)...............16
5-3 Semi-Mount Model (287) ..............17
5-4 Quick Hitch Model (287)................17
5-5 Front Belting Installation................18
5-6 Rear Band Installation...................18
5-7 Front Chain Installation .................18
5-8 Rear Chain Installation..................18
Safety Decals ................................19
Torque Specifications ....................20
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.
2
BUSH HOG®
MODEL 280 SERIES LIMITED WARRANTY
✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯
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. Model 280 gearboxes are covered by a two (2) year limited warranty period. 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 equipment 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 equipment 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 warranties, 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 judgement 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 LIMITED 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.
✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯
Record the model number, serial number and date
purchased. This information will be helpful to your
dealer if parts or service are required.
MODEL NUMBER
SERIAL NUMBER
MAKE CERTAIN THE WARRANTY REGISTRATION
CARD HAS BEEN FILED WITH BUSH HOG/
SELMA, ALABAMA
DATE OF RETAIL SALE
3
DEALER PREPARATION CHECK LIST
280 SERIES ROTARY CUTTERS
BEFORE DELIVERING MACHINE — The following check list should be completed.
Use the Operator’s Manual as a guide.
❒
❒
❒
❒
❒
❒
❒
❒
❒
❒
1. Assembled completed.
2. Gearbox filled with oil.
3. All fittings lubricated.
4. All shields in place and in good condition.
5. All fasteners torqued to specifications given in Torque Chart.
6. Slip clutches have been checked for proper operation.
7. All decals in place and readable. (See decal page.)
8. Overall condition good (i.e. paint, welds)
9. Operators manual has been delivered to owner and he has been instructed
on the safe and proper use of the cutter.
10. Purchaser or dealer elects to delete deflectors. (front belting, rear bands, front
and rear chains)
Explanation:
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.
4
IMPORTANT SAFETY PRECAUTIONS
This symbol is used to call attention to safety 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, personal injury,
reduction of efficiency and worst of all—loss of life. Watch for safety hazards and correct deficiencies 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.
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. Lower implement to ground, stop tractor engine, apply parking brake, and allow blades 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) and seat belt be
used in all mowing operations.
5
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:
1. Securely fasten your seat belt if the tractor has a
ROPS.
5. Watch where you are going, especially at row
ends, on roads, and around trees.
2. Where possible, avoid operating the tractor near
ditches, embankments, and holes.
6. Do not permit others to ride.
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 recommended 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.)
6
SECTION I
INTRODUCTION AND DESCRIPTION
Figure 1-1 Major Components
1-1 INTRODUCTION
We are pleased to have you as a Bush Hog customer. Your 280 Series Rotary Cutter has been
carefully designed to give maximum service with
minimum down time. This manual is provided to
give you the necessary operating and maintenance
instructions for keeping your rotary cutter in top
operating condition. Please read this manual 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 for safe operation of implement. If any
assistance or additional information is needed, contact your authorized Bush Hog dealer.
Rear
Band
Support Yoke
A-Frame
Strut
Gearbox
1-2 DESCRIPTION
Driveline
Strongback
The 280 Series rotary cutters (Figure 1-1) are
designed for medium duty applications such as
grass, corn stalks and light brush. These cutters are
single spindle with two free-swinging blades. Freeswinging blades reduce the shock of impact when a
stationary object is hit. Additional protection is provided by a slip clutch on the gearbox input shaft. A
round blade holder allows the cutter to “ride over”
stumps and similar immovable objects. Models 285
and 286 are attached to the tractor using a standard
Cat. I or II 3-point hitches. The 287 can use Cat. I
and II standard and quick hitch or semi-mount.
Standard equipment includes driveline shields,
clutch shields and front and rear discharge shields
Flex
Link
Skid
Hitch Pin
Front Belting
(deflectors). NOTE: Dealer or purchaser may elect
to delete front and rear discharge shields (deflectors) at their option. Refer to “WARNING” in Section
3-3.
NOTE
All references made to right, left, front, rear, top or
bottom are as viewed facing the direction of forward
travel with implement properly attached to tractor.
Table 1 Technical Specifications
SERIES
Cutting Width
Transport Width
Length
Hitch
Cutting Height
Cutting Capacity
Driveshaft
Gearbox
Blades
Blade Tip Speed
Blade Holder
Top Deck
Side Bands
Minimum Tractor HP
Front & Rear Deflectors
Wheels
Approximate Weight (lbs.)
285
286
287
5’
6’
7’
66”
78”
90”
103”
115”
127”
3-Point Category I
3-Point Category I
3-Point Category I & 2
(Cat. II PIns Optional)
(Cat. II PIns Optional)
(Standard & Quick Hitch)
1-1/2” - 10-1/2”
1-1/2” - 10-1/2”
1-1/2” - 10-1/2”
2” Diameter
2” Diameter
2” Diameter
ASAE Category 4
ASAE Category 4
ASAE Category 4
540 RPM (90 HP)
540 RPM (90 HP)
540 RPM (90 HP)?
1/2” x 4” Uplift
1/2” x 4” Uplift
1/2” x 4” Uplift
12,397 fpm
14, 877 fpm
14,420 fpm
Round
Round
Round
10 Ga. Steel
10 Ga. Steel
10 Ga. Steel
1/4” x 8”
1/4” x 8”
1/4” x 8”
30
40
50
Belting is standard, chain deflectors are optional
Laminated
Laminated
Laminated
794 lbs. 1, 2
962 lbs. 1, 2
1247 lbs. 1, 3
1 - Weight includes deflector chains front & rear, 2 - Single tailwheel, 3 - Dual tailwheel
7
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
SECTION II
PREPARATION FOR USE
QUICK HITCH ASSEMBLY
2-1 ATTACHING TO TRACTOR
5/8 X 5-1/2” Capscrews
w/ 2-3/8” Bushing
WARNING
NEVER STAND BETWEEN TRACTOR AND
CUTTER WHILE TRACTOR IS BEING BACKED
TO HITCH.
WARNING
1 x 4-1/2” Capscrew
w/ 1-1/4” Bushing
3/4 x 4” Capscrew
w/ 1” Bushing
3/4 x 2-1/2” Capscrews
w/ 1” Bushing
ADDITIONAL TRACTOR FRONT BALLAST
MAY BE NEEDED FOR STABLE OPERATION
AND TRANSPORT OF THE 3-POINT HITCH
MOUNTED CUTTER. SEE TRACTOR OPERATOR’S MANUAL FOR RECOMMENDED
WEIGHTS.
WARNING
DO NOT USE PTO SHAFT ADAPTERS TO
CHANGE SIZE OF TRACTOR PTO SHAFT.
THE CORRECT DRIVELINE MUST BE USED
TO MATCH TRACTOR PTO SHAFT.
A. Attach cutter to tractor 3-point hitch per tractor
operator’s manual. Do not attach driveline at this
time.
IMPORTANT
Tractor top link pin securing 3-point hitch top link to
cutter must conform to dimension shown in Figure 21 to avoid interference with A-frame.
Figure 2-1 Top Link Pin
Lower Hitch Pin w/ Cat. I & Cat. II Bushings
NOTE
Due to the many variations in tractor / implement hitch points and corresponding differences in distances between tractor PTO
shafts and implement input shafts, drivelines
may need to be shortened as described in the
following steps:
5-1/2”
3-3/4”
3-3/4”
D. Raise and lower cutter to determine position
with shortest distance between the tractor PTO shaft
and gearbox input shaft. Shut down tractor leaving
cutter in position of shortest distance. Securely
block cutter in position.
E. Pull driveline apart. Attach outer (female) section to tractor PTO shaft. Pull on driveline section to
be sure that yoke locks into place.
F. Hold driveline sections parallel to each other to
determine if too long. Each section should end
approximately 3 inches (76mm) short of reaching
universal joint shield on opposite section. If too
long, measure 3 inches (76mm) back from universal
joint shield and mark on opposite section. (Figure 23). Do this for both sections.
G. Raise and lower cutter to determine position
with greatest distance between PTO shaft and gearbox input shaft. Shut down tractor leaving cutter in
position of greatest distance. Securely block cutter in position.
B. Raise 3-point hitch until front of cutter is approximately 1-2 inches (25-51mm) lower than rear for
standard cut or until front of cutter is 1 inch (35mm)
higher than rear for extra shredding. Shut down
tractor. Securely block cutter in position. For further
explanation of cutter adjustment, see paragraph 3-2.
C. Adjust top link of 3-point hitch to position flex
link as shown in Figure 2-2.
Figure 2-2 Flex-Link
8
Figure 2-3
J. Using cut off section of shield as a guide, cut
shaft the same amount. (Figure 2-6)
Figure 2-6
H. Hold driveline sections parallel to each other
and check for minimum 6 inches (15cm) overlap.
Figure 2-4). If driveline has been marked for cutting,
overlap will be the distance between two marks. If
driveline has less than minimum overlap, do not use.
Contact authorized Bush Hog dealer.
K. Repeat steps “I” and “J” to other driveline
section.
L. Deburr ends of driveline sections and clean
away all chips and filings. (Figure 2-7)
Figure 2-4
Minimum Overlap
Figure 2-7
NOTE
If driveline is the correct length, omit the following
steps “I” through “L” and proceed to step “M”.
I. Clamp driveline in a well padded vice to prevent damage to the shield. Cut off shield where
marked. (Figure 2-5)
Figure 2-5
M. Apply multi-purpose grease to inside of outer
(female) driveline section. Assemble driveline and
install on tractor and cutter. Pull on each driveline
section to be sure yokes lock into place. Make certain
driveline shielding is in place and in good condition.
N. Adjust lower lift arm(s) to level cutter right to left.
Refer to tractor operator's manual for instructions.
NOTE
After attaching driveline to tractor, attach driveline
shield chains from both ends of driveline shielding
to stationary locations.
9
SECTION III
OPERATING INSTRUCTIONS
3-1 GENERAL SAFETY
(285, 286, 287). Adjustment can be made with a
ratchet or cylinder on the 287 dual wheel mount.
(Figures 3-1 & 3-2)
Only qualified people should operate this machine.
Operator should wear hard hat, safety glasses and
safety shoes. It is recommended that tractor be
equipped with Rollover Protective Systems (ROPS)
and a seat belt be used. Before beginning operation, clear work area of objects that may be picked
up and thrown. Check for ditches, stumps, holes or
other obstacles that could upset tractor or damage
cutter. Always turn off tractor engine, set parking
brake, and allow cutter blades to come to a complete
stop before dismounting tractor.
A. Raise cutter using 3-point lift until tailwheel(s)
lift off ground. Turn off tractor. Block cutter in position.
B. Remove adjusting bolts from bracket.
C. Position tailwheel for desired cutting height.
D. Replace adjusting bolts and tighten securely.
3-3 OPERATION
A. Perform BEFORE EACH USE maintenance
listed in paragraph 4-1.
B. Start tractor.
C. With tractor at idle speed, engage PTO drive.
D. Adjust cutter to working position.
3-2 ADJUSTING FOR WORK
The cutter should be operated at the highest position
which will give desired cutting results. This will help
prevent the blades from striking the ground, reducing
blade wear and undue strain on the machine. For
best results under heavier cutting conditions, always
tilt the cutter approximately 2 inches (51mm) lower in
the front. This tilt decreases horsepower requirements and increases potential ground speed. When
fine shredding is desired, adjust cutter deck level or
slightly lower in the rear. This will keep the foliage
under cutter until thoroughly shredded. More power
is required for shredding.
DANGER
STAY CLEAR OF ROTATING DRIVELINE. DO
NOT OPERATE WITHOUT DRIVELINE
SHIELDS IN PLACE AND IN GOOD CONDITION. FAILURE TO HEED THESE WARNINGS
MAY RESULT IN PERSONAL INJURY OR
DEATH.
3-2.1 CUTTING HEIGHT ADJUSTMENT
E. Set tractor throttle for appropriate PTO speed
(540 RPM).
WARNING
THE CUTTER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
CUTTER BEFORE WORKING UNDERNEATH.
Figure 3-2 Model 287 With Dual Tailwheels
Hydraulic Cylinder
(or Adjustable Ratchet)
WARNING
AVOID PLACING HANDS, FEET OR ANY
OTHER BODY PARTS BENEATH THE CUTTER
WHILE MAKING HEIGHT ADJUSTMENTS.
The cutting height may be adjusted from 1-1/2” to
10-1/2” by selecting the appropriate holes in the
adjusting bracket on the single tailwheel bracket
Figure 3-1
Dual Tailwheel Mount
Tailwheel Frame
Adjusting Bracket
10
DANGER
WARNING
ROTATING CUTTER BLADES. STAND
CLEAR UNTIL ALL MOTION HAS STOPPED.
TO AVOID AN ACCIDENTAL FALL FROM
THE TRACTOR AND POSSIBLE INJURY BY
THE MOWER, IT IS RECOMMENDED THAT
THE TRACTOR BE EQUIPPED WITH ROPS
(ROLLOVER PROTECTIVE SYSTEM) AND
THAT A SEAT BELT BE USED BY THE OPERATOR FOR ALL MOWING OPERATIONS.
ALL ROTARY CUTTERS HAVE THE ABILITY
TO DISCHARGE OBJECTS AT HIGH SPEEDS
WHICH COULD RESULT IN SERIOUS INJURY
TO BYSTANDERS OR PASSERS-BY.
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, SAFETY CHAINS, OR OTHER FACTORY APPROVED SAFETY SHIELDS THAT ARE IN GOOD
REPAIR. CEASE MOWING WHENEVER ANYONE COMES WITHIN THE OPERATING AREA.
F. Place tractor in gear and begin cutting. Tractor forward speed should be controlled by gear selection,
not engine speed. For maximum cutting efficiency, forward speed should allow cutter to maintain a constant,
maximum blade speed. Do not exceed 5 mph (8kph). If
PTO drive is disengaged due to cutter stalling or tractor
engine bogging, cutter must be moved to a “cut” area
and tractor throttle reduced to idle before re-engaging.
Always cut up and down the face of slopes, never
across.
3-4 TRANSPORTING
When implement is transported on road or highway, day
or night, use tractor flashing warning lights unless prohibited by law. A slow moving vehicle (SMV) sign must be
visible from the rear by approaching vehicles. Do not
exceed 15 mph (24kph) when traveling. Fully raise
implement before transporting.
SECTION IV
MAINTENANCE
7. Inspect wheel(s) for wear, damage, or foreign
objects.Repair or replace if necessary.
4-1 MAINTENANCE CHECK LIST
Perform scheduled maintenance as outlined below.
Lower machine to ground, turn off tractor and set parking
brake before doing maintenance inspections or work.
Some checks may require raising machine off ground
and supporting with blocks. All bolts should be torqued
as recommended in the torque specifications chart
unless otherwise indicated.
8. Perform BEFORE EACH USE lubrication per paragraph 4-2.
9. During operation, listen for abnormal sounds which
might indicate loose parts, damaged bearings or
other damage.
AFTER EACH USE
WARNING
1. Clean all debris from machine especially underside of
deck and affixed safety decals. Replace any missing
or illegible decals.
THE CUTTER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
CUTTER BEFORE WORKING UNDERNEATH.
2. Inspect cutter for worn or damaged components.
Repair/replace before next use. Any replacement
components installed during repair shall include the
components current safety decals specified by the
manufacturer to be affixed to the component.
BEFORE EACH USE
1. Check tractor tire air pressure. Refer to tractor
operator’s manual.
3. Store cutter in a dry place.
2. Check blades and spindle to be sure that no foreign objects such as wire or steel strapping bands
are wrapped around them.
4-2 LUBRICATION (Figure 4-1)
NOTE
3. Check blade bolts for tightness. Tighten to 450
ft./lbs. (609 Nm).
The multi-purpose grease referenced in this section is an
NLGI Grade 2 type grease.
4. Inspect blades for wear. Replace if necessary per
paragraph 4-4. Always replace both blades on
spindle with two blades equal in weight. Use
only genuine Bush Hog replacement parts.
BEFORE EACH USE
1. Driveline Universal Joints - Apply multi-purpose
grease with grease gun.
2. Wheel Bearings-Apply multi-purpose grease with
grease gun.
5. Make certain driveline shields are in place and in
good repair to minimize entanglement injuries to
persons by rotating drivelines.
3. Wheel Pivots-Apply multi-purpose grease with grease
gun.
6. Make certain deflector shields (chains, bands, etc.)
are in good repair to minimize injuries to persons by
the discharge of the high speed thrown objects.
4. Driveline Guard-Apply 2-3 shots of multi-purpose
grease with grease gun to plastic fitting.
11
5. PTO Driveline - Disconnect PTO driveline, pull
the two sections apart, apply thin coat of multipurpose grease to inside of outer (female) sec
tion. Reassemble sections and install. Pull each
section to be sure driveline and shields are
securely connected. Make certain PTO shielding
is in good condition.
6. Gearbox - Add EP80W-90 gear oil as necessary
to bring oil level to check plug on side of housing.
Figure 4-1 Lubrication
(3) Before Each Use
(6) Before Each Use
(4) Before Each Use
(1) Before Each Use
(5) Before Each Use
(2) Before Each Use
Figure 4-2
To remove yoke shield, rotate the two fasteners to
allow shield to slide back.
Blade Nut Removal
WARNING
THE CUTTER CAN FALL FROM HYDRAULIC
SYSTEM FAILURE. TO AVOID SERIOUS
INJURY OR DEATH, SECURELY SUPPORT
CUTTER BEFORE WORKING UNDERNEATH.
4-3 BLADE HOLDER ASSEMBLY,
REMOVAL AND INSTALLATION
A. Remove cotter pin and blade holder assembly
retaining nut.
B. Wearing heavy gloves, grasp blade holder
and pull off shaft. If stuck, align bolt with access hole
in top of cutter deck. Using hammer and a piece of
pipe, strike blade bar. Rotate pan ato other blade
bolt and strike blade bar. Repeat until blade holder
comes off. Care should be taken not to damage
blade bolt threads.
1-11/16” Socket
B. Remove nuts from blade bolts using a 1-11/16”
socket through the access hole in the deck.
C. Inspect blade bolt shoulder for wear. Replace
if necessary.
D. Assemble new blades to blade holder using
blade bolts, nuts and lockwashers. Tighten nuts to
450 ft./lbs. Strike blade bolt head with heavy hammer to seat, then retighten.
E. Check to be sure blades swing 360° freely.
If blades will not swing freely, remove, locate
problem, and repair. Operating cutter when
blades will not swing freely will cause excessive
vibration, damaging implement.
TO INSTALL:
A. Place blade holder assembly, washer and
retaining nut on lower shaf . Torque nut to 450
ft./lbs. (609.7 Nm) using a 1-1/2” socket.
B. Using a sledge hammer, strike the blade pan
firmly on each end (on or near the head of the blade
bolt) several times, alternating ends between blows.
Retighten to 450 ft./lbs. (609.7 Nm).
C. Install cotter pin. It may be necessary to
tighten nut slightly to install cotter pin.
4-5 SLIP CLUTCH OPERATIONAL CHECK
4-4 BLADE REPLACEMENT (Figure 4-2)
After implement had been stored for 30 days or
more, perform the following operational check:
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. Always replace both blades on a spindle using
two blades having the same weight. Use only genuine Bush Hog replacement parts.
A. Raise cutter and securely block in position.
A. Loosen eight nuts retaining clutch springs 1/3
turn or until spring can be turned with fingers.
B. With tractor at idle speed, engage tractor PTO
drive for 2-3 seconds. Clutch should slip without
12
sary, do so in 1/3 turn increments. Adjust only to
provide sufficient torque to prevent slippage under
normal conditions. Occasional slippage is normal
for drivetrain protection. If satisfactory results cannot
be obtained, consult your Bush Hog dealer.
turning blades. If clutch does not slip, contact your
authorized Bush Hog dealer.
C. Retighten nuts to within 1/64” of original position. Initial spring length is shown in Figure 4-3.
WARNING
OVERTIGHTENING SPRING NUTS MAY
CAUSE DAMAGE TO IMPLEMENT AND/OR
TRACTOR DUE TO INCORRECT SLIP CLUTCH
TORQUE SETTING. ALWAYS FOLLOW THE
PROPER ADJUSTMENT PROCEDURE.
IMPORTANT
Do not overtighten nut and cause spring to
become solid as this will cause shaft to fail.
Figure 4-3
Spring Length
(See
Chart)
4-6 SLIP CLUTCH ADJUSTMENT
The slip clutch is factory preset to the correct torque
for protecting implement and tractor. Periodic
adjustment is recommended; refer to section 4-5.
Should adjustment be needed, first check to be sure
all spring lengths are the same. Initial spring length
is shown in Figure 4-3. If necessary, adjust nut on
any spring that is unequal. Adjust all eight spring
retaining nuts 1/3 of a turn (2flats on a nut) and
check clutch slippage. If further adjustment is neces-
MODEL
285 &286
SPRING LENGTH
1-3/32” or 27.6 mm
287
1-1/8” or 28.5 mm
Table 4-1 General Troubleshooting
PROBLEM
Uneven Cut
PROBABLE CAUSE
Cutter not level side to side.
Worn or bent blades.
Stripping or Windrowing
Possible build-up of material under Clean cutter.
cutter.
Cutter not level.
Refer to Section II.
Worn blades.
Replace per paragraph 4-4.
Noisy Cutter
Loose components.
Low oil in gearboxes.
REMEDY
See SECTION II
Replace blades per paragraph 4-4.
Check al bolts for tightness per
paragraph 20.
Check for proper oil level. Refer to
paragraph 4-2.
Rapid Blade Wear
(Cutting Edge)
Blade contacting the ground.
Adjust cutter to operate at a height
that will eliminate ground contact.
Rapid Blade Wear
(Bolt Hole)
Cutter not being operated at
rated RPM speed.
Too much ground speed.
Reduce ground speed.
Set tractor throttle for proper PTO
speed.
Use lower gear.
Poor Shredding Job
Incorrect deck tilt.
Excessive ground speed.
Worn blades.
Adjust per paragraph 3-2.
Reduce ground speed.
Replace blades per paragraph 4-4.
Cutter Vibration
Cutter not being operated at rated
RPM speed.
Possible build up of material on
blade pan.
Broke blade.
Blades unequal weight.
Set tractor throttle for proper PTO
speed.
Clean blade pan.
13
Replace blades per paragraph 4-4.
Replace blades per paragraph 4-4.
PRE-ASSEMBLY
SAFETY PRECAUTIONS
CAUTION
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, read the maintenance section of this manual to be sure that any parts requiring lubrication
have been properly lubricated.
BEFORE OPERATING THE EQUIPMENT, IF YOU HAVE ANY QUESTIONS REGARDING THE PROPER
ASSEMBLY OR OPERATION, CONTACT YOUR AUTHORIZED BUSH HOG DEALER OR REPRESENTATIVE.
14
SECTION V
ASSEMBLY
IMPORTANT
Tighten all fasteners to specifications on Torque
Chart unless otherwise indicated.
H. Attach clutch shield to gearbox as shown in
exploded drawing in Figure 5-6.
I. Remove pivot bolt from spline end of clutch.
Remove inspection cover from clutch shield.
J. Slide clutch onto gearbox input shaft aligning
bolt hole with slot in input shaft. Fasten with pivot
bolt, lockwasher and nut. Torque to 30 ft./lbs.
K. Loosen eight nuts retaining clutch springs
1/3 turn or until spring can be turned with fingers.
L. With tractor at idle speed, engage tractor
PTO drive 2-3 seconds. Clutch should slip without turning blades.
M. Retighten nuts to original position. If adjustment is necessary, refer to Section 4-6.
5-1 3-POINT LIFT MODELS (285 & 286)
A. Attach A-frame struts to mounting brackets
using 5/8” x 2” capscrews and locknuts as shown.
(Figure 5-1)
B. Place flex link and pivot tube between top of Aframe struts. Place support yokes on outside of Aframe struts. Fasten together using 5/8” x 6” capscrew and locknut.
C. Position tailwheel bracket on rear of cutter deck
as shown. (Figure 5-1) Align holes in tailwheel weldment with holes in support yokes and strongbacks.
Fasten with 5/8” x 6” capscrew and locknut on the
single tailwheel bracket.
D. Place flatwasher on wheel spindle. Install
wheel on tailwheel weldment securing with roll pin.
E. Bolt adjusting bracket to cutter deck using 5/8 x
2” capscrew and locknut.
F. Place tailwheel frame into desired position and
fasten with 1/2 x 1-3/4” capscrews, lockwashers and
nuts.
G. Install Category I lift pins in front holes in
mounting brackets and fasten with 1-1/8” fine thread
nut and lockwasher.
Figure 5-1
WARNING
OVER-TIGHTENING SPRING NUTS MAY
CAUSE DAMAGE TO IMPLEMENT AND/OR
TRACTOR DUE TO INCORRECT SLIP
CLUTCH TORQUE SETTING. ALWAYS
FOLLOW THE PROPER ADJUSTMENT PROCEDURE.
N. Fill gearbox with EP80W-90 gear oil to
check plug on rear of gearbox. Allow time for oil
to seep through bearings into lower housing.
Replace temporary plug with vent plug supplied
in operator’s manual package.
Tailwheel Bracket
Height Adjusting Bracket
Clutch Shield
Yoke
Flex Link
Tailwheel
Assembly
Rear Safety
Chains
Driveline
Cat. I or II Hitch Pin
Front Safety Chains
15
5-2 3-POINT LIFT MODELS (287)
I. Install lift pins and spacers according to Fig. 5-3.
Fasten lift pin with klick pin.
J. Attach clutch shield to gearbox as shown in
exploded drawing in Figure 5-6.
K. Remove pivot bolt from spline end of clutch.
Remove inspection cover from clutch shield.
L. Slide clutch onto gearbox input shaft aligning
bolt hole with slot in input shaft. Fasten with pivot
bolt, lockwasher and nut. Torque to 30 ft./lbs.
M. Loosen eight nuts retaining clutch springs
1/3 turn or until spring can be turned with fingers.
N. With tractor at idle speed, engage tractor
PTO drive 2-3 seconds. Clutch should slip without turning blades.
O. Retighten nuts to original position. If adjustment is necessary, refer to Section 4-6.
A. Attach A-frame struts to mounting brackets
using 5/8” x 2” capscrews and locknuts as shown.
(Fig. 5-1)
B. Place flex link and pivot tube between top of Aframe struts. Place support yokes on outside of Aframe struts. Fasten together using a 5/8” x 6” capscrew and locknut. Attach the opposite ends of the
support yokes over the welded strongback tubes
which are located closest to the gearbox using 5/8” x
8” capscrews, flatwasher and locknut.
C. For single tailwheel mounting, position tailwheel bracket on rear of cutter deck as shown. (Fig.
5-1) Align holes in tailwheel weldment with holes in
support yokes and strongback tubes (tubes located
closest to the gearbox). Fasten with the 5/8” x 8”
capscrews, flatwasher and locknut.
D. Place flatwasher on wheel spindle. Install
wheel on tailwheel weldment securing with roll pin.
E. Bolt adjusting bracket to cutter deck using 5/8”
x 2” capscrew and locknut.
F. Place tailwheel frame into desired position and
fasten with 1/2” x 1-3/4” capscrews, lockwashers
and nuts.
G. For mounting dual tailwheels, position tailwheel
bracket at the rear tubes located in the strongbacks.
(Fig. 5-2) Align holes in tailwheel weldment with
holes in strongback. Install pivot bushings and fasten with 3/4” x 8” capscrews and flange locknuts.
Pin ratchet or lift cylinder (8” stroke) to axle and
deck assembly.
H. Place flatwashers on wheel spindles. Install
wheels on tailwheel weldment securing with roll pins.
WARNING
OVER-TIGHTENING SPRING NUTS MAY
CAUSE DAMAGE TO IMPLEMENT AND / OR
TRACTOR DUE TO INCORRECT SLIP CLUTCH
TORQUE SETTING. ALWAYS FOLLOW THE
PROPER ADJUSTMENT PROCEDURE.
P. Fill gearbox with EP80W-90 gear oil to
check plug on rear of gearbox. Allow time for oil
to seep through bearings into lower housing.
Replace temporary plug with vent plug supplied
in operator’s manual package.
Clutch Shield
Figure 5-2 Model 287
Dual Tailwheel Bracket
Lift Pins
Tailwheel Assembly
Rear Safety Chains
Hydraulic Cylinder
(Or Ratchet Adjuster)
Driveline
Figure 5-3 Front View of Model 287 Lower Hitch Points
Category II
Category I
2-7/8” x 1-1/8” Spacer
(2-7/8” Spacer not used on Cat. I)
2-3/4” x 1-1/2” Spacer
2-3/4” x 1-1/2” Spacer Used
16
5-3 SEMI-MOUNT MODEL (287)
D. Attach support yokes to the outside of the pivot
arm using two 1” diameter x 11/16” long bushings,
3/4” x 2-1/2” capscrews, lockwashers and nuts.
E. Attach the opposite ends of the support yokes
over the welded strongback tubes which are located
closest to the gearbox using 5/8” x 8” capscrews,
flatwasher and locknut.
F. For single tailwheel mounting position tailwheel
bracket on rear of cutter deck as shown. (Figure 31) Align holes in tailwheel weldment with holes in
support yokes and strongback tubes (tubes located
closest to the gearbox). Fasten with the 5/8” x 8”
capscrews, flatwasher and locknut.
G. Place flatwasher on wheel spindle. Install
wheel on tailwheel weldment securing with roll pin.
H. Bolt adjusting bracket to cutter deck using 5/8”
x 2” capscrew and locknut.
I Place tailwheel frame into desired position and
fasten with 1/2” x 1-3/4” capscrews, lockwashers
and nuts.
J. For mounting dual tailwheels, position tailwheel
brackets at the rear tubes located in the strongbacks. (Figure 3-2) Align holes in tailwheel weldment with holes in strongback. Install pivot bushings and fasten with 3/4 x 8” capscrews and flange
locknuts. Pin ratchet or lift cylinder to axle and deck
assembly.
K. Install lift pins and spacers according to Figure
5-3. Fasten lift pin with klick pin.
L. Attach clutch shield to gearbox as shown in
exploded drawing in Figure 5-6.
M. Remove pivot bolt from splined end of clutch.
Remove inspection cover from clutch shield.
N. Slide clutch onto gearbox input shaft aligning
bolt hole with slot in input shaft. Fasten with pivot
bolt,lockwasher and nut. Torque to 30 ft./lbs.
O. Loosen eight nuts retaining clutch springs
1/3 turn or until spring can be turned with fingers.
P. With tractor at idle speed, engage tractor PTO
drive 2-3 seconds. Clutch should slip without
turning blades.
Q. Retighten nuts to original position. If adjustment is necessary, refer to Section 4-6.
A. For mounting dual tailwheels, position tailwheel
brackets at the rear tubes located in the strongbacks. (Figure 5-2) Align holes in tailwheel weldment with holes in strongback. Install pivot bushings
and fasten with 3/4” x 8” capscrews and flange locknuts. Pin ratchet or lift cylinder (8” stroke) to axle
and deck assembly.
B. Place flatwashers on wheel spindles. Install
wheels on tailwheel weldment securing with roll pins.
C. Refer to Figure 5-3 and arrange lift pin and
spacers as shown. Fasten lift pin with klick pin.
D. Attach clutch shield to gearbox as shown in
exploded drawing in Figure 5-6.
E. Remove pivot bolt from splined end of clutch.
Remove inspection cover from clutch shield.
F. Slide clutch onto gearbox input shaft aligning
bolt hole with slot in input shaft. Fasten with pivot
bolt, lockwasher and nut. Torque to 30 ft./lbs.
G. Loosen eight nuts retaining clutch springs
1/3 turn or until spring can be turned with fingers.
H. With tractor at idle speed, engage tractor
PTO drive 2-3 seconds. Clutch should slip without turning blades.
I. Retighten nuts to original position. If adjustment is necessary, refer to Section 4-6.
WARNING
OVER-TIGHTENING
SPRING
NUTS
MAY CAUSE DAMAGE TO IMPLEMENT
AND / OR TRACTOR DUE TO INCORRECT
SLIP
CLUTCH
TORQUE
SETTING.
ALWAYS FOLLOW THE
PROPER ADJUSTMENT PROCEDURE.
J. Fill gearbox with EP80W-90 gear oil to check
plug on rear of gearbox. Allow time for oil to
seep through bearings into lower housing.
Replace temporary plug with vent plug supplied
in operator’s manual package.
5-4 QUICK HITCH MODEL (287)
(Refer to Figure 5-2 and Photo in Section II,
Preparation For Use. Also refer to exploded
drawing on page 21.)
WARNING
OVER-TIGHTENING SPRING NUTS MAY
CAUSE DAMAGE TO IMPLEMENT AND/ OR
TRACTOR DUE TO INCORRECT SLIP CLUTCH
TORQUE SETTING. ALWAYS FOLLOW THE
PROPER ADJUSTMENT PROCEDURE.
A. Attach A-frame struts to mounting brackets
using 5/8” x 2” capscrews and locknuts.
B. Top plates can be secured to the A-frame struts
using two 5/8” x 5-1/2” capscrews and locknuts and
spaced by 2-3/8” diameter by 2-1/16” long bushing.
Install a 1” x 4-1/2” capscrew and a 1-1/4” diameter
by 2-1/16” long bushing and a nut and lockwasher to
the front portion of the top plate.
C. Align holes in the pivot arm installing a 1” diameter by 1-1/16” long bushing and securing with a
3/4” x 4” capscrew, lockwasher and nut.
N. Fill gearbox with EP80W-90 gear oil to
check plug on rear of gearbox. Allow time for oil
to seep through bearings into lower housing.
Replace temporary plug with vent plug supplied
in operator’s manual package.
17
5-5 FRONT BELTING INSTALLATION
Rear Band
A. Align belting and clamp with holes in front lip
of deck.
B. Fasten with 3/8 x 3-1/2” capscrews, flatwashers, lockwashers and nuts. (Figure 5-4)
Figure 5-4
5-6 REAR BAND INSTALLATION
A. Align deflector band with holes in rear band of
deck.
B. Fasten with 3/8 x 1” capscrews, flatwashers,
lockwashers and nuts. (Figure 5-4)
5-7 FRONT CHAIN INSTALLATION
A. Align front chain assembly bracket with holes
in front lip of deck.
B. Fasten with 3/8 x 3” capscrews, flatwashers,
lockwashers and nuts. (Figure 5-5)
Belting Clamp
Front Belting
5-8 REAR CHAIN INSTALLATION
A. Align rear chain assembly bracket with holes
in rear band of deck.
B. Fasten with 3/8 x 1-1/4” capscrews, flatwashers, lockwashers and nuts. (Figure 5-5)
Rear Mount Bracket
Figure 5-5
CAUTION
Retaining
Rod
USE ONLY FACTORY APPROVED CHAIN
GUARDS.
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 OR
FROM CONTACT WITH THE CUTTING
BLADES.
Chains
Front Mount
Bracket
Figure 5-6 Clutch Shield
Shield
Retaining Rod
Chains
Gearbox
Mount
Capscrew, (2) Flatwashers and Locknut
Locknut should be tightened enough to
prevent rattling, but loose enough to allow
raising the shield.
Patched Capscrew and Flatwasher
18
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
82618
82617
78608
82619
60873
19
TORQUE SPECIFICATIONS
Proper toque for American fasteners used on Bush Hog equipment.
Recommended Torque in Foot Pounds (Newton Meters).*
AMERICAN
Bolt Head Markings
SAE Grade 2
(No Dashes)
SAE Grade 5
(3 Dashes)
”
lt
Bo ter “B
e
m
Dia
Wrench
Size “A”
SAE Grade 8
(6 Dashes)
METRIC
Wrench
Size “A”
WRENCH
SIZE (IN.) “A”
BOLT DIAMETER
(IN.) “B” AND
THREAD SIZE
SAE
GRADE 2
SAE
GRADE 5
SAE
GRADE 8
7/16
1/4 - 2O UNC
6 (7)
8 (11)
12 (16)
7/16
1/4 - 28 UNF
6 (8)
10 (13)
14 (18)
1/2
5/16 - 18 UNC
11 (15)
17 (23)
25 (33)
1/2
5/16 - 24 UNF
13 (17)
19 (26)
27 (37)
9/16
3/8 - 16 UNC
20 (27)
31 (42)
44 (60)
9/16
3/8 - 24 UNF
23 (31)
35 (47)
49 (66)
5/8
7/16 - 14 UNC
32 (43)
49 (66)
70 (95)
5/8
7/16 - 20 UNF
36 (49)
55 (75)
78 (106)
3/4
1/2 - 13 UNC
49 (66)
76 (103)
106 (144)
3/4
1/2 - 20 UNF
55 (75)
85 (115)
120 (163)
7/8
9/16 - 12 UNC
70 (95)
109 (148)
153 (207)
7/8
9/16 - 18 UNF
79 (107)
122 (165)
172 (233)
15/16
5/8 - 11 UNC
97 (131)
150 (203)
212 (287)
15/16
5/8 - 18 UNF
110 (149)
170 (230)
240 (325)
1-1/8
3/4 - 10 UNC
144 (195)
266 (360)
376 (509)
1-1/8
3/4 - 16 UNF
192 (260)
297 (402)
420 (569)
1-5/16
7/8 - 9 UNC
166 (225)
430 (583)
606 (821)
1-5/16
7/8 - 14 UNF
184 (249)
474 (642)
668 (905)
1-1/2
1 - 8 UNC
250 (339)
644 (873)
909 (1232)
1-1/2
1 - 12 UNF
274 (371)
705 (955)
995 (1348)
1-1/2
1 - 14 UNF
280 (379)
721 (977)
1019 (1381)
1-11/16
1-1/8 - 7 UNC
354 (480)
795 (1077)
1288(1745)
1-11/16
1-1/8 - 12 UNF
397 (538)
890 (1206)
1444 (1957)
1-7/8
1-1/4 - 7 UNC
500 (678)
1120 (1518)
1817 (2462)
1-7/8
1-1/4 - 12 UNF
553 (749)
1241 (1682)
2013 (2728)
2-1/16
1-3/8 - 6 UNC
655 (887)
1470 (1992)
2382 (3228)
2-1/16
1-3/8 - 12 UNF
746 (1011)
1672 (2266)
2712 (3675)
2-1/4
1-1/2 - 6 UNC
870 (1179)
1950 (2642)
3161 (4283)
2-1/4
1-1/2 - 12 UNF
979 (1327)
2194 (2973)
3557 (4820)
”
lt
Bo ter “B
e
m
Dia
8.8
Numbers appearing on bolt heads
indicate ASTM class.
*Use 75% of the specified torque value for plated
fasteners. Use 85% of the specificed torque
values for lubricated fasteners.
Proper torque for metric fasteners used on Bush Hog equipment.
Recommended torque in foot pounds (newton Meters).*
WRENCH
SIZE
(mm) “A”
BOLT
DIA.
(mm) “B”
ASTM
4.6
8
5
1.8 (2.4)
5.1 (6.9)
6.5 (8.8)
10
6
3 (4)
8.7 (12)
11.1 (15)
ASTM
8.8
ASTM
9.8
ASTM
10.9
13
8
7.3 (10)
21.1 (29)
27 (37)
16
10
14.5 (20)
42 (57)
53 (72)
18
12
25 (34)
74 (100)
73 (99)
93 (126)
21
14
40 (54)
118 (160)
116 (157)
148 (201)
181 (245)
24
16
62 (84)
167 (226)
30
20
122 (165)
325 (440)
33
22
443 (600)
611 (828)
36
24
211 (286)
563 (763)
778 (1054)
41
27
821 (1112)
1138 (1542)
46
30
418 (566)
1119 (1516)
1547 (2096)
20
230 (312)
449 (608)
MODEL 287 QUICK HITCH ASSEMBLY
NOTE
Pivot arm must be assembled as shown so that it will
pivot upward as the hitch assembly flexes. Pointed
end must be to the top.
End Pointing Upward
Pivot Arm
21
BUSH HOG
DIVISION OF
P.O. Box 1039 ● Selma, AL 36702-1039
Telephone (334) 872-6261