Bush Hog 280 User Manual

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BUSH HOG®

280 SERIES

ROTARY CUTTERS

Operator’s Manual

ASSEMBLY OPERATIONMAINTENANCE

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 WITH-

OUT 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

SECTION/PARA

PAGE

Warranty.................................................

 

3

4-3Blade Holder Assembly

 

Dealer Preparation Check List ...............

 

4

 

Removal and Installation...............

12

Safety Precautions.................................

 

5

4-4Blade Replacement ......................

12

Federal Laws and Regulations...............

 

6

4-5Slip Clutch Operational Check

......12

I. INTRODUCTION & DESCRIPTION

......7

4-6Slip Clutch Adjustment..................

13

1-1Introduction ......................................

 

7

4-7Troubleshooting.............................

13

1-2Description.......................................

 

7

 

 

 

II. PREPARATION FOR USE .....................

 

8

V. ASSEMBLY .........................................

15

2-1Attaching To Tractor ........................

 

8

5-13 - Point Lift Models (285 & 286) .......

15

III.OPERATING INSTRUCTIONS ............

 

10

5-23 - Point Lift Model (287)...............

16

3-1General Safety ...............................

 

10

5-3Semi-MountModel (287) ..............

17

3-2Adjusting for Work..........................

 

10

5-4Quick Hitch Model (287)................

17

3-2.1Cutting Height Adjustment ..........

 

10

5-5

Front Belting Installation................

18

3-3

Operation .......................................

 

10

5-6

Rear Band Installation...................

18

3-4

Transporting...................................

 

11

5-7

Front Chain Installation .................

18

IV.MAINTENANCE...................................

 

11

5-8

Rear Chain Installation..................

18

4-1

Maintenance Check List ................

 

11

 

Safety Decals ................................

19

4-2

Lubrication .....................................

 

11

 

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.

MAKE CERTAIN THE WARRANTY REGISTRATION CARD HAS BEEN FILED WITH BUSH HOG/

SELMA, ALABAMA

MODEL NUMBER

SERIAL NUMBER

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-Agriculturaluse, 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—lossof 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(TheWilliams-SteigerOccupational 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.

2.Where possible, avoid operating the tractor near ditches, embankments, and holes.

3.Reduce speed when turning, crossing slopes, and on rough, slick, or muddy surfaces.

4.Stay off slopes too steep for safe operation.

Child Labor Under 16 Years Old

5.Watch where you are going, especially at row ends, on roads, and around trees.

6.Do not permit others to ride.

7.Operate the tractor smoothly - no jerky turns, starts, or stops.

8.Hitch only to the drawbar and hitch points recommended by tractor manufacturers.

9.When tractor is stopped, set brakes securely and use park lock if available.

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

1-1INTRODUCTION

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.

1-2DESCRIPTION

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 twofree-swingingblades. 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 II3-pointhitches. The 287 can use Cat. I and II standard and quick hitch orsemi-mount.Standard equipment includes driveline shields, clutch shields and front and rear discharge shields

Table 1 Technical Specifications

Figure 1-1Major Components

 

 

 

 

 

 

 

 

 

 

Flex

A-Frame

 

 

 

 

 

 

 

 

 

 

Link

Strut

 

 

Support Yoke

 

 

 

 

 

 

 

 

 

 

 

Gearbox

 

Rear

Band

Strongback

 

 

 

 

Driveline

 

 

 

 

Hitch Pin

 

 

 

 

 

 

Skid

 

 

 

 

 

 

 

 

 

 

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.

 

SERIES

285

286

287

 

 

 

 

Cutting Width

5’

6’

7’

 

 

 

 

 

 

 

 

Transport Width

66”

78”

90”

 

 

 

 

 

 

 

 

Length

103”

115”

127”

 

 

Hitch

3-PointCategory I

3-PointCategory I

3-PointCategory I & 2

 

 

(Cat. II PIns Optional)

(Cat. II PIns Optional)

(Standard & Quick Hitch)

 

 

 

 

 

 

Cutting Height

1-1/2”-10-1/2”

1-1/2”-10-1/2”

1-1/2”-10-1/2”

 

 

 

Cutting Capacity

2” Diameter

2” Diameter

2” Diameter

 

 

 

 

 

 

Driveshaft

ASAE Category 4

ASAE Category 4

ASAE Category 4

 

 

 

Gearbox

540 RPM (90 HP)

540 RPM (90 HP)

540 RPM (90 HP)?

 

 

 

 

 

 

 

Blades

1/2” x 4” Uplift

1/2” x 4” Uplift

1/2” x 4” Uplift

 

 

Blade Tip Speed

12,397 fpm

14, 877 fpm

14,420 fpm

 

 

 

 

 

 

 

Blade Holder

Round

Round

Round

 

 

 

 

 

 

 

Top Deck

10 Ga. Steel

10 Ga. Steel

10 Ga. Steel

 

 

Side Bands

1/4” x 8”

1/4” x 8”

1/4” x 8”

 

 

 

 

 

 

 

 

 

Minimum Tractor HP

30

40

50

 

 

 

 

 

 

 

Front & Rear Deflectors

Belting is standard, chain deflectors are optional

 

 

Wheels

Laminated

Laminated

Laminated

 

 

 

 

 

 

 

Approximate Weight (lbs.)

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

SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

7

SECTION II

PREPARATION FOR USE

2-1ATTACHING TO TRACTOR

WARNING

NEVER STAND BETWEEN TRACTOR AND CUTTER WHILE TRACTOR IS BEING BACKED TO HITCH.

WARNING

ADDITIONAL TRACTOR FRONT BALLAST MAY BE NEEDED FOR STABLE OPERATION AND TRANSPORT OF THE 3-POINTHITCH 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-pointhitch per tractor operator’s manual. Do not attach driveline at this time.

IMPORTANT

Tractor top link pin securing 3-pointhitch top link to cutter must conform to dimension shown in Figure 2- 1 to avoid interference withA-frame.

Figure 2-1Top Link Pin

5-1/2”

3-3/4”

3-3/4”

B.Raise 3-pointhitch until front of cutter is approximately1-2inches(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 paragraph3-2.

C.Adjust top link of 3-pointhitch to position flex link as shown in Figure2-2.

Figure 2-2Flex-Link

QUICK HITCH ASSEMBLY

5/8 X 5-1/2”Capscrews

w/ 2-3/8”Bushing

3/4 x 4” Capscrew 1 x 4-1/2”Capscreww/ 1” Bushing

w/ 1-1/4”Bushing

3/4 x 2-1/2”Capscrews w/ 1” Bushing

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:

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 2- 3). 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.

8

Figure 2-3

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.

Figure 2-4

Minimum Overlap

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

J. Using cut off section of shield as a guide, cut shaft the same amount. (Figure 2-6)

Figure 2-6

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 2-7

M.Apply multi-purposegrease 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