Major MJ39-143 Installation and maintenance instructions

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HEDGE CUTTER
MJ39-143 and MJ39-143-D
Operator’s Manual
and Parts List
WARNING
Read this instruction manual thoroughly before using
your machine and follow all safety precautions.

B
@MAJOREQUIPMENT
Head O󰀩ce
Major Equipment Intl. Ltd.
Ballyhaunis,
Co. Mayo,
Ireland.
Tel.: [phone]
Fax: [phone]
Email: [email protected]
UK O󰀩ce
Major Equipment Ltd.
Major Industrial Estate,
Middleton Rd.,
Heysham,
Lancs.
LA3 3JJ
Tel.: [phone]
Fax: [phone]
Email: [email protected]
NETHERLANDS & GERMANY OFFICE
Major Equipment Intl. Ltd.
Postbus 29,
NL-7700 AA ,
Dedemsvaart,
Nederland.
Tel: [phone]
Email: [email protected]
Web: www.major-equipment.com
Disclaimer
While every e󰀨ort has been made in the production of this manual to ensure that the information
contained herein is full and correct, Major assumes no responsibility for errors or omissions.
Major reserves the right to modify the machinery and the technical data contained within the
manual without prior notice.
Further to this, Major assumes no liability for any damages which may result from the use of the
information contained within this manual.

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Contents
Introduction
Thank you 1
Safety Aspects 1
Intended use 1
Register Your Product and Warranty Online 1
Tractor Requirements 2
Safety
Hazards associated with operating Grass Cutting Machinery 2
Operating Safely 3
Workstation 4
Regulations for use of the transmission 4
Driving Safely on Public Roads 4
Inspections before Use 5
Starting Regulations 5
Product Identication
Machine Serial Numbers 6
Product Specications 6
EEC certicate of conformity for machines 7
Machine Safety Labels 8
Key to Main Parts 9
Blade Rotation 10
Blade system 11
Drive-line gearbox 11
Operating the Machine
Attaching machine to the DIgger/Arm 12
Transport Position 12
Operating the Machine/Mowing 13
Roller adjustment 13
Hydraulics setup 14
Maintenance
Machine storage 15
Transmission Bolts 16
Roller (if applicable) 16
Replacement of wear parts 16
Clearing out a blockage 16
Troubleshooting 17
Lubrication schedule 19

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Spare parts - MJ39
MJ39-143-D (Digger model) 20
MJ39-143-D (Digger model) - Parts list 22
MJ39-143 (Power Arm model) 23
MJ39-143 (Power Arm model) - Parts list 25
755-DCBLDHXFS2-L Blade assembly 26
755-DCBLDHXFS2-R Blade assembly 26
MJ39 Roller 27
Roller End - Parts List 28
030W0MD80E564XD0R (Rotation - Right) 29
030W0MD80E564XS0R (Rotation - Left) 29
MJ40T (347.801) (1.47) 30
MJ40T-S (347.801) (1.47 SHORT) 30

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Introduction
Thank you
We appreciate having you as a customer and wish you many years of safe and satised use of your machine.
Safety Aspects
This manual is an important part of your machine and should remain with the machine when you buy it. Reading your
operator’s manual will help you and others avoid personal injury or damage to the machine. Information given in this
manual will provide the operator with the safest and most e󰀨ective use of the machine. Only competent and skilled
persons who have fully read and understood this operator’s manual are allowed to operate this machine.
Sections in your operator’s manual are placed in a specic order to help you understand all the safety messages so you
can operate this machine safely. You can also use this manual to answer any specic operating or servicing questions.
Your manual contains special messages to bring attention to potential safety concerns, machine damage as well
as helpful operating and servicing information. Please read all the information carefully to avoid injury and machine
damage. Should any questions arise regarding the information given in this booklet, please contact your local MAJOR
dealer or MAJOR.
The operator is solely responsible for the safe use and maintenance of the machine. The machine must only be operated
by a competent and skilled person. Setting up and adjustment must only be carried by the operator. Do not let a third
party person to adjust or modify the machine in any way.
Intended use
This machine is a grass cutting machine and designed for cutting grass. Moreover, it must only be used with a suitable
tractor (see “Product Specications” section of this booklet) and driven by an adequate hydraulic pump/motor. All other
use is strictly prohibited. Major will not be held responsible for any loss or damage caused due to a misuse of the
machine.
Register Your Product and Warranty Online
To register your product through the Internet, simply go to the Support section on www.major-equipment.com. Completing
the information, either online or with the product warranty card, will ensure the customer that their product receives all
post sales service and important product information.
This machine is warranted for 12 months. No warranty is given where the machine is being used as a hire machine.
Warranty is against faulty workmanship or parts.
Warranty covers parts only. All parts must be returned to the manufacturer. No warranty can be considered unless parts
are returned. All replacement parts will be supplied on a chargeable basis until warranty has been accepted.

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Tractor Requirements
Attaching the machine to the tractor will inuence the stability and manoeuvrability of the tractor. Please
consult your tractor manual for limitations on weight and towing ability of the tractor.
It is the operator’s responsibility to ensure that the tractor is suitable for the machine. Always consult your tractor’s
manual for any further information required.
Recommended Horse Power requirements for the particular models are provided in the “Product Specication” section
of this booklet. Using excessive power can a󰀨ect the quality of cut and/or may damage the machine.
Tractors which are not suitable for the operation can sustain damage due to the weight and power requirements of
the machine. Always observe the weight of machine provided in the “Product Specication” section of this booklet,
compare this with the guidelines from the tractor manual and ensure that the tractor can lift the machine safely.
Depending on the model and specication of the machine it can be attached to a tractor/power unit by one of the
following methods: 2/3 point linkage connection, positioned on an extendable arm or attached to a digger. The position
of the 3 point linkage machine can be adjusted by manual or hydraulic top link.
Winged models require at least one hydraulic spool with 1/2” female quick release connection for a single acting ram/
rams.
Road light kit requires a 12V 7 pin socket.
Safety
The operator’s manual also explains any potential safety hazards whenever necessary in special safety messages that
are identied with the word, CAUTION, and the safety-alert symbol .
Hazards associated with operating Grass Cutting Machinery
Shear Hazard
Shear hazards are created when the edges of two objects move toward or next to each other closely enough to cut
relatively soft material. This can include the parts of the machine under hydraulic control when operating from transport
to mowing position. Note, the wing units are designed to oat independently of the centre deck & are free to move within
operating limits.
Crush Hazard
Bystanders can be injured when machine is lowered into mowing position. Winged machines have crush points around
the hinge areas & between the wing & main body. Always use transport locking bars when not in use (winged models
only).
Rotating Blade Hazard
All persons are at risk if they place their hands or feet under the machine when it is raised from the ground when the
blades are in motion.
Pinch Hazard
Pinch points are created when two objects move together, with at least one of them moving in a circle. This hazard is
common in power transmission devices such as Belt Drives, Gear Drives & Rollers. Ensure all guarding is present.
Wrap Hazard
Any exposed, rotating machine component is a potential wrap point. Injuries usually occur when loose clothing or long
hair catch on and wrap around rotating parts such as drive shafts on the machine. Ensure all guarding is present.

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Free-wheeling parts Hazard
The heavier a revolving part is, the longer it will continue to rotate after power is shut o󰀨. This characteristic is called
‘free-wheeling.’ Blades, and various other components, drive shafts etc., will continue to move after power is shut o󰀨 -
often for several minutes. Injuries occur when:
• Operators shut o󰀨 equipment, and attempt to clean or adjust a machine before components have completely stopped
moving.
• Operator awareness is the key to safety around freewheeling parts. Never raise the machine while the blades are still
rotating.
Thrown objects Hazard
Machines throw material as a natural part of doing their job. Foreign objects, such as stones, sticks and other debris,
may be taken into this equipment and expelled at tremendous speed. These objects are contained by the sides of the
machine and by the rear/front rollers / guards / chain guards / rubber skirts depending on model of your machine.
Ensure bystanders are clear from the machine & cannot be hit with debris expelled from the machine. Bystanders or
animals in the path of thrown objects could be seriously injured. Never operate machine with decks raised from the
ground as this makes the front/rear protection redundant.
Hydraulic Hazard (if applicable)
Hydraulic systems store considerable energy. Careless servicing, adjustment, or replacement of parts can result in
serious injury. High pressure blasts of hydraulic oil can injure eyes or other body parts. The following precautions are
crucial:
• Make certain the hydraulic pump is turned o󰀨.
• Lower attached equipment to the ground.
• Conrm that load pressure is o󰀨 the system.
A pinhole leak in an hydraulic hose is a serious hazard. A leak may not be visible, and the only sign may be a few drops
of uid. Never inspect hydraulic hoses with your hands, because a ne jet of hydraulic uid can pierce the skin.
Slips, Trips and Falls Hazard
Slips and falls often result from:
1. Slippery footing on the ground
2. Cluttered steps and work platforms.
The potential for slips and falls can be greatly reduced by using good judgement and practicing good housekeeping on
and around equipment.
Noise Hazard
Please note that the machine is normally used outdoors and that the position of the operator is seated in the driving seat
of the tractor. It is advisable to consult the prescriptions listed in tractor operator and maintenance manuals.
The acoustic pressure at a distance of 2.6m from the centre of the machine and at a height of 2.0m, with the implement
operating in a no load condition can reach 90 dBA. In a loaded condition the value can reach 97dBA. Higher oil ow
rate will result in higher noise levels. Always wear hearing protection. Similar noise levels are produced while operating
hydraulic driven machines.
Operating Safely
Hydraulic driven machines must be driven by oil type specied in the Product Specications part of this booklet. Ensure
the oil ow rate is within the allowed limits. Low/High oil ow rate can cause damage to the machine and/or the operator.
Users should become thoroughly familiar with the contents of this manual before using, servicing and
mounting the implement to the tractor and all other pertinent operations. Never wear jewellery, loose clothing
such as ties, scarves, belts, unbuttoned jackets or dungarees with open zips which could become caught up
in moving parts.
Always wear approved garments complying with accident prevention provisions such as non-slip shoes, ear
mu󰀨s, goggles and gauntlets. Wear a jacket with reecting stickers if the implement is used near public
highways.
Consult your retailer, the Labour Health Service or your nearest equivalent authority for the information about
the current safety provisions and specic regulations with in order to ensure personal safety.
ALWAYS SWITCH OFF THE TRACTOR ENGINE AND ENGAGE THE PARKING BRAKE BEFORE MAKING
ADJUSTMENT TO THE MACHINE.

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NEVER PLACE LIMBS UNDER THE MACHINE WHILE ROTOR(S) ARE TURNING. ROTORS CAN REMAIN
TURNING FOR UP TO 1 MINUTE AFTER TURNING OFF THE HYDRAULIC MOTOR .
Workstation
The operator must remain seated while working the machine. If the machine is a winged unit and the wings need to be
raised/lowered the operator must not leave the tractor. Never leave the workstation (tractor cab, digger cab) with the
hydraulic motor running and blades rotating. Always apply the handbrake and turn o󰀨 the hydraulic motor before leaving
the cab.
NEVER OPERATE THE HYDRAULICS WITH THE TRACTOR SWITCHED OFF
Regulations for use of the transmission
The transmission between the gearboxes is protected by a bolt down cover. All guarding should be kept e󰀩cient and in
good condition. If the condition is poor, the guarding should be replaced before the implement is used. It is the operator’s
responsibility to check the condition of the covers before each use.
UNLESS IT IS CORRECTLY PROTECTED THE TRANSMISSION COULD CAUSE DEATH SINCE IT CAN
CATCH ON PARTS OF THE BODY OR CLOTHING
Driving Safely on Public Roads
Check the local Highway Code regulations before driving the tractor on public highways with an implement attached.
Check the reectors, hazard ashers and/or projecting load indicators are installed when required and e󰀩cient. These
indicators must be installed correctly and easily seen by the drivers of other vehicles.
Bystanders must not be allowed to lean against or climb onto the machine during transport or while working. Do not
allow bystanders to ride on the machine.
Maximum transport speed of the implement is limited to 25-30km/h depending on the model of the machine
(observe safety labels on the machine).
General safety instructions
Precautions to be taken while working with the machine:
1. Do not operate the machine when you are tired or under the inuence of alcohol or any other intoxicant;
2. Before starting mowing, make sure that the area is clear of people or animals.
3. It is mandatory to read all the safety requirements and the operator’s manual of the machine.
4. If you are not sure how to use the machine, please contact the manufacturer or the dealer.

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Inspections before Use
Always disconnect hydraulic motor hoses, switch o󰀨 tractor engine and engage the parking brake before
making adjustments to the machine.
1. With the whole machine as level as possible, check the oil level in all gearboxes. Top up if required through the oil
ller plug. The correct level is at the oil level plug.
2. Grease all lubrication points as outlined in the Maintenance section of this booklet.
3. Check parts for wear.
4. Check the blade mounting bolts are tight.
5. Ensure the gearbox shaft nuts are tight and retained in place by split pin.
6. Check tightness of all nuts, bolts and pins.
7. Ensure safety guards and aps are in place at all times where tted. If these become worn or missing, replace
them immediately with new ones.
8. Due to the corrosive nature of grass when cut, wash down the machine when nished mowing, especially when
the machine is being stored for a long period of time.
Starting Regulations
Always check that any imminently dangerous conditions have been eliminated before using the machine.
Ensure all guarding is present & the operator is fully aware of the operations of the machine.
Always make sure that the hydraulic motor hoses are connected correctly and that the oil ow rate is met.

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170222
Product Identication
Machine Serial Numbers
If you need to contact MAJOR or your MAJOR dealer for information on servicing or spare parts, always provide the
product model and serial numbers. Model and Serial number can be found on the Serial Plate located on the machine.
We suggest that you record your machine details below:
Model No: ______________________________
Serial No: ______________________________
Date of Purchase: ______________________________
Dealer Name: ______________________________
Dealer Telephone: ______________________________
Product Specications
Model MJ39-143/-D
Transport Width N/A
Working Width 1.43m (4′ 8.5″)
Hydraulic Motor 78cc
MAX Pressure 2500PSI
172BAR
17MPA
Flow Rate 80-110 litres/minute
Cutting Height 10-85mm
Number of Rotors 2
Number of Blades 4/8
Weight 376kg
This machine is driven by a hydraulic motor. Observe and follow the instructions on the labels.
Oil type - ISO 100.
Oil Flow Rate must be 80-110 litres per minute.
Maximum working pressure must not exceed 2500PSI/172BAR/17MPA.

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EEC certicate of conformity for machines
(conforming to Directive 2006/42/EC)
Name of Manufacturer: Major Equipment Ltd
Address: Coolnaha, Ballyhaunis, Co. Mayo, Rep of Ireland
Tel. [phone]
Fax [phone]
declares in sole responsibility that the product:
Machine description and function: Rotary mower with vertical axes cutting heads which cuts
grass so it can be subsequently picked up.
Model: Hedge Cutter (MJ39)
Type: ________________ Serial number: _________________
Technical le compiled by: Alex Kolchanov (c/o Major Equipment Ltd)
• THE SUPPLY OF MACHINERY (SAFETY) REGULATIONS 2008.
• S.I. No. 299 of 2007, Safety, Health and Welfare at Work (General Application)
Regulations 2007 (Ireland).
• Health & Safety at Work, etc. Act 1974 (c.37) (UK).
• EN ISO 14121-1: 2007 ‘Safety of machinery. Principles for risk assessment’.
• EN 745 - Agricultural Machinery - Rotary Mowers and Flail Mowers - Safety.
• EN ISO 13857 - Safety of machinery: Safety distances to prevent hazard zones
being reached by upper and lower limbs.
I hereby certify on behalf of Major Equipment Int. Ltd., that this machine when properly installed and
operated correctly, complies with all the essential Health & Safety requirements of all legislation
referred to above.
Signed: ______________ Place: Coolnaha, Ballyhaunis, Co. Mayo, Rep of Ireland
Date: 02/02/2022
Name: John Murphy
Position: Managing Director

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CHECK TIGHTNESS
OF TRANSMISSION
BOLTS DAILY
Machine Safety Labels
The machine safety labels shown in this section are placed in important areas on your machine to draw attention to
potential safety hazards.
On your machine safety labels, the words DANGER, WARNING, and CAUTION are used with this safety alert symbol.
DANGER identies the most serious hazards.
To avoid injury, read the manual
Check tightness of the
transmission bolts
Rotating blade hazard
High oil
pressure
hazard
Grease points
Moving parts

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1
6
11
2
1
7
7
1
2
7
8 10 4
3
5
Key to Main Parts
1 Body
2 Drivetrain cover
3 Guard
4 Rubber guard
5 Skid
6 Rear roller
7 Carrying arm
8 Hydraulic motor
10 Hydraulic ram
11 Blade

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BLADE ROTATION
VIEWED FROM UNDERSIDE
CUT WIDTH= 1435mm (4' 8 1/2")
CUT HEIGHT = 10mm TO 85mm.
TRANSPORT WIDTH= 1530mm (5')
WEIGHT = 376 kg
INPUT = 1400rpm (min)
ROTOR SPEED = 1400x1.47 = 2058rpm
BLADE TIP SPEED =
.755xPIx2058 = 4880 m/min
x 3.281 = 16015 ft/min
MOTOR = 78cc
MAX PRESSURE = 2500 PSI/170 BAR/17 MPa
FLOW RATE = 80-110LPM
MJ39-143 MJ39-143-D
Blade Rotation
Blade rotation viewed from underside

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B-B ( 1 : 4 )
C-C ( 1 : 4 )
BB
C
C
755
B-B ( 1 : 4 )
C-C ( 1 : 4 )
BB
C
C
755
1
1
2
2
3
3
45
6
7
8
9
10
10
11
7
Blade system
Full breakdown of the blade assembly is provided in the Spare Parts section of this booklet
Drive-line gearbox
Rotor gearbox
Oil level
plug
Oil ller
plug
1 Blade mount 7 Blade pivot bolt
2 Gearbox output shaft 8 Blade pivot bush
3 Gearbox split pin 9 Blade
4 Blade back 10 Undersole disk
5 Blade back bolt 11 Overlap Blade
6 Blade back spacer

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170222
Operating the Machine
Attaching machine to the DIgger/Arm
ALWAYS OPERATE ON LEVEL GROUND WHEN HITCHING/UNHITCHING THE IMPLEMENT. THIS WILL
PREVENT DANGEROUS MOVEMENT. NEVER ALLOW ANYONE TO STAND BETWEEN THE
TRACTOR/DIGGER AND THE MACHINE.
1. Connect Power Arm/Digger to the appropriate hitching point;
2. Ensure to connect FLOW & RETURN hoses correctly to either Digger or Power Arm unit.
Transport Position
Before raising the machine wait until the transmission and the blades are completely still.
1. Check the machine is connected to the power unit as described;
2. Ensure moving parts become still then transform the machine into transport position by hydraulic control.

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CB
A
Operating the Machine/Mowing
Never place limbs under the machine while rotors are turning. Always operate on level ground when
connecting/disconnecting the implement. This will prevent dangerous movement.
1. Move the machine into mowing position;
2. Use spool to raise/lower front hood according to material being cut.
Roller adjustment
In order to achieve desired cutting height, the roller should be adjusted.
Roller
To adjust the height of the roller follow this procedure at both
sides of the roller:
1. Loosen Bolt C(Note: You do not have to remove the bolt,
half of the turn will su󰀩ce to allow movement);
2. Remove Bolt Band locate in the desired slot A. (Note: Pay
attention when removing Bolt Bas the roller may swing
down, adequate support must be provided under the roller);
3. Match the height of the roller on both sides of the machine
by checking the position of Bolt Bin slot A;
4. When adjustment is complete, re-tighten Bolts B and C.

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12
12
21
Hydraulics setup
Make sure that the return hose is plugged into an unrestricted free ow return.
Pay attention to the FLOW direction arrow on your machine as Left hand mounted and Right hand
mounted machines have a di󰀨erent ow direction! Replace worn or damaged labels immediately.
Connecting the wrong hoses will result in motor/seal damage!
1 Flow hose
2Free ow return hose
Digger model
OBSERVE THE LABELS ON THE MACHINE AND
CONNECT THE HOSES ACCORDINGLY
Power Arm model

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Maintenance
In order to keep your Major machine in a good working order it is necessary to conduct maintenance on a regular
basis. Only competent and skilled persons who have fully read and understood this operator’s manual are allowed
to carry out maintenance on this machine. It is important to replace worn parts immediately with genuine Major
spare parts. These parts are manufactured to the same specication as the machine and will provide the best result.
Genuine Major spares can be obtained from MAJOR or your local MAJOR dealer.
All maintenance checks and operations must be carried on a rm level ground. The machine must always be
disconnected form the tractor before any cleaning, lubricating and servicing operations can be carried out. If works
must be carried out under the machine, ensure that the props, jacks, stands, hoists or cranes are capable of
supporting the machine securely.
If emergency operations are required whilst the machine is connected to the tractor, switch o󰀨 the engine of the
tractor, remove the key from the ignition, engage the parking brake. An example of such emergency situation is the
complete blockage of the machine in the eld. To clear out the blockage follow the safety steps described above and
clear out the blockage. Ensure there are no ropes, twines or wires wrapped around the rotors.
Machine storage
To prolong the life of your machine it is recommended to store it in a dry environment. Prior to parking the machine for
storage, wash the machine thoroughly, especially underneath, and ensure that there is no grass or debris left on the
machine. Lubricate all pivot points with EP2 type grease. Check for oil leaks and x these if required. Any parts of the
machine with damaged paint/galvanised surface must be painted.

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Transmission Bolts
All nuts and bolts in the transmission including Rubber couplings, Star Drives, PTO Shafts and Gearboxes should be
checked for tightenes after mowing at the following intervals:
1st 50 Acres
1st 100 Acres
1st 250 Acres
And every 250 acres thereafter.
Roller (if applicable)
Check the of condition of the rollerend (stub axle) at the end of every season. Roller shaft (stub) must be able to rotate
freely and without excessive play. If necessary, remove the roller assembly and adjust the tightness of the bearings.
Replacement of wear parts
Blades, blade backs, blade bushing, blade bolts and nuts must be checked on a regular basis for wear and defection.
MAJOR recommends to visually check the blade assemblies every 40 hours of operation. This interval may change
depending on the operational conditions.
Replace any damaged or worn parts immediately, failure to do so can result in blade breakages and can cause
damage to the equipment or injuries to the operator and others nearby.
Blunt blades must be sharpened or replaced, failure to do so will result in a poor quality cut and excessive use of
power from your tractor.
If the machine is equipped with wheels, wheel nuts must be checked daily. Air pressure within pneumatic
tyres must be maintained at 2 Bar. Solid wheels must be checked for wear and damage and if necessary
replaced immediately.
ENSURE BLADE ROTATION AND TIMING IS CORRECT AFTER SERVICING TRANSMISSION.
Pay attention when servicing or detaching components from the machine. Subassemblies and parts e.g.
blade assemblies, gearboxes, rollers, guards, skids, wheels etc. can weigh up to 100 kilograms individually
and must be supported adequately before fully detaching from the machine.
Clearing out a blockage
Always wear appropriate PPE when clearing out blockages.
If blockage of blades occurs proceed as follows:
1. Set the machine into transport position (including the top links);
2. Park the tractor on level ground, switch o󰀨 the engine and remove the key from the ignition;
3. Disconnect the hydraulic motor hoses;
4. Using a pressure washer clear out the excess material built up around the blades. If the pressure washer is not
available use your hand to remove the grass from around the blades, bearing in mind that there might be wires
wrapped up around the rotors.