Major CYCLONE MJ31-200 Installation and maintenance instructions

www.major-equipment.com
MJ31-200, MJ31-250, MJ31-280, MJ31-300,
MJ30-420DW, MJ30-350 (HR20617+),
MJ30-420 (HR20617+), MJ30-560 (HR20617+),
MJ30-630, MJ30-720 CYCLONE
Operator’s Manual
and Parts List
WARNING
Read this instruction manual thoroughly before using
your machine and follow all safety precautions.

@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.

www.major-equipment.com i
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
PTO Shaft Safety 4
Driving Safely on Public Roads 5
Inspections before Use 6
Starting Regulations 6
Product Identication
Machine Serial Numbers 7
Product Specications 7
EEC certicate of conformity for machines 8
Machine Safety Labels 9
Key to Main Parts 10
Blade Rotation 11
Blade system 12
Drive-line gearboxes 12
Operating the Machine
Attaching machine to the Tractor 13
Transport Position 14
Operating the Machine/Mowing 15
Top Link position (otation restrictor) 15
Additional adjustments 16
Castor wheel (if applicable) 17
Roller and skid setup 17
Maintenance
Machine storage 18
PTO Shaft Maintenance 18
Transmission Bolts 19
Roller (if applicable) 19
Replacement of wear parts 19
Clearing out a blockage 19
Wing shafts alignment (if applicable) 19
Troubleshooting 20
Lubrication schedule 22
Spinning Undersole Disk (if applicable) 22

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Spare Parts - CYCLONE
MJ30-720 Overview 24
MJ30-630 Overview 24
MJ30-560 Overview 24
MJ30-420 Overview 25
MJ30-420DW Overview 25
MJ30-350 Overview 25
MJ30-720 Body - General Assembly 26
MJ30-720 Body - Linkage and Drivetrain assembly 27
MJ30-630 Body - General Assembly 29
MJ30-630 Body - Linkage and Drivetrain assembly 30
Front Guard assembly (MJ30-630 Body MJ30-630-GRD20) 32
MJ30-560/420DW Body - General Assembly 33
MJ30-560/420DW Body - Linkage and Drivetrain assembly 34
MJ30-720 Wing - General Assembly 36
MJ30-420/560/630 Wing - General assembly and Drivetrain 39
MJ30-350/420 Body Assembly 41
MJ30-350/420DW Wing Assembly 44
Front Guards assembly (MJ30-350/420/420DW/560/630/720) 46
MJ31-300 General Assembly 48
MJ31-300 Sub-assemblies 51
MJ31-280 General assembly 52
MJ31-250 General Assembly 55
MJ31-200 Assembly 59
MJ30/J31 A-frame bu󰀨er (3000T-AFBGA) Type 1 62
Roller Assembly (All models) 62
MJ30/31 A-frame bu󰀨er (AFB-GA1) Type 2 62
Wheel mounting bracket set (CYC-CW-WGKIT) 63
Wheel kit assembly (CYC-CW-01) 63
Chain straps 64
Check Chain 64
MJ30-350/420/420DW/560/630/720 Wing PTO assembly (CYC-WDR01) 65
PTO shafts 65
Hydraulics setup 66
Other spares 67
Blades overview 68
MJ40T-347.801-1.47 75
MJ40T11-347.805-1 76
JJ.03499-1.9 (1:1.9 3 way gearbox) 77
TF26A-266.205-1.47 4W 78
TF26A-266.207-1.47 3W (266.207-S) 79
TF26A-266.209-1.47 4W 80
TF26A-266.210-1.84 3W (266.210-S) 81
LF140T/1 (LF140J)-140.886-1 (140.881) 82

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271020
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 drive-line of the tractor PTO. 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.
The machine is designed to be attached by means of a 2/3 point linkage connection or can be trailed (specic
models). The position of the 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 PTO shafts or 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.
• Shear bolt protection device in PTO shaft shears & the mowing parts are still spinning but the primary PTO shaft is
stationary. 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 & a PTO rate of 540 (1000) RPM the value can
reach 97dBA. Higher rate of PTO input will result in higher noise levels. Always wear hearing protection.
Operating Safely
This MAJOR machine is designed to operate at a PTO rate which is stated in the Product Specications part of this
booklet. Ensure tractor PTO output is set at a correct RPM rate. This MAJOR machine must only be used for purposes
outlined in the Intended Use section of this booklet. All other use is strictly prohibited.
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 DISENGAGE PTO, 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. ROTOR(S) CAN
REMAIN TURNING FOR UP TO 1 MINUTE AFTER DISENGAGING PTO.
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. Always ensure the PTO has been turned o󰀨 and the parking
brake applied before leaving the tractor cab or carrying out maintenance.
NEVER OPERATE THE HYDRAULICS WITH THE TRACTOR SWITCHED OFF
Regulations for use of the transmission
The transmission to the gearboxes is protected throughout the machine by both PTO shafts and bolt down covers. All
guarding should be kept e󰀩cient and in good condition. If the condition is poor, the guarding should be renewed before
the implement is used.
UNLESS IT IS CORRECTLY PROTECTED THE TRANSMISSION COULD CAUSE DEATH SINCE IT CAN
CATCH ON PARTS OF THE BODY OR CLOTHING
Ensure retaining chains are correctly anchored on all PTO shafts, preventing them from turning. Ensure drive line can
turn easily within the shield. Keep spline grooves clean and greased so that PTO shaft can connect easily. Besides
being described in this booklet, the method by which the PTO shaft is connected to the tractor must be checked out with
the instructions in the tractor manufacturer’s manual.
PTO Shaft Safety
Maximum PTO input is specied in the Product Specications section of this booklet. Contact your nearest dealer or
a specialised retail outlet if the PTO must be replaced with a longer one, since this must belong to the same power
category and possess the same characteristics. An unsuitable PTO could easily break.
The tractor PTO shaft length may be altered to suit the individual tractor model. When the machine is in operation, the
PTO shaft should have a minimum 1/3 engagement as shown in the diagrams. After the machine has been hitched to
the tractor, it should be checked in various positions that the drive line is the correct length. If the PTO is too short and
tends to slip out of place, it must be replaced with a longer one.
If the PTO shaft is too long, it should be shortened in the following way:
• Set the machine at a minimum distance from the tractor, then brake the tractor and switch o󰀨 the engine.
• Separate the two halves of the PTO. Insert the female part into the tractor PTO and the male part into the machine
PTO, checking that the position is correct by means of the xing pins.
• Line up the two halves of the PTO together, keeping them parallel.
• Using a felt tip pen, match mark the place where the two halves must be shortened as shown.
• First cut shield “1” and use part “2” as a reference to cut the splined shaft.
• Proceed in the same way for the second half.
• Trim and chamfer the two cut ends of the PTO and clean o󰀨 all swarf and shavings.
• Grease the two proles and join the two halves of the PTO together.
• Mount the PTO shaft and check that its length is correct as before.

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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).
Trailed Machines only (if applicable)
The shaft must not reach the end of the tube or
project from this. Ensure the PTO does not bottom
when turning

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Inspections before Use
Always disengage PTO, 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 ensure the pins lock the PTO shaft yoke ends onto the spline shafts on both the tractor and the
implement. An unlocked shaft could slip out of position, causing notable mechanical damage and serious
injury to both operator and bystanders.
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. Before starting adjusting the machine, it is mandatory to disconnect the PTO, to turn o󰀨 the engine of the tractor, apply
handbrake and wait for the turning parts to become still and placed on the ground.
4. It is mandatory to read all the safety requirements and the operator’s manual of the machine.
5. If you are not sure how to use the machine, please contact the manufacturer or the dealer.

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030321
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
The machine is propelled by using a 6 spline 1-3/8” PTO shaft (provided with the machine).
Model MJ30-720 MJ30-630 MJ30-560 MJ30-420DW MJ30-420 MJ30-350 MJ31-300 MJ31-280 MJ31-250 MJ31-200
Overall Width 7.4m (24’ 3 9/16”) 21' 4½" 5.82m (19’ 1”) 4.43m (14’ 6”) 4.43m (14’ 6”) 3.65m (12’) 3.1m 3.0m 2.65m (8’9”) 2.1m (7’)
Cut Width 7.2m (23’ 7 7/16”) 6.3m (20' 8") 5.6m (18’ 4.5”) 4.22m (13’10”) 4.22m (13’10”) 3.5m (11’ 5”) 2.86m 2.79m 2.5m (8’ 1”) 2m (6’ 5”)
Transport Width 2.3m (7’ 6 1/2”) 9' 1¾" 2.54m (8’ 4”) 2.54m (8’ 4”) 2.67m (8’ 9”) 2.67m (8’9 ”) 3.1m 3m 2.65m (8’9”)
No. of Blades 40 36 32 24 24 20 12 16 16 12
No. of Rotors 10 9 8 6 6 5 3 4 4 3
Power (HP) 150-200 140-190 100-150 100-150 100-150 70-120 70-120 60-110 50-100 50-100
PTO (rpm) 1000 1000 1000 540/1000 1000 1000 1000 1000 540-1000
1000 (FM)
540
1000 (FM)
Blade Speed 77.5m/s 58m/s
11400FPM 77.5m/s 77.5m/s 77.5m/s 77.5m/s 74m/s 75m/s 75m/s 77.5m/s
Cutting Height 55-170mm 2” to 6¾” 55-170mm 55-170mm 55-170mm 55-170mm 20-250mm 20-250mm 20-250mm 20-250mm
Weight (kg) 2050 1900
4,130 lbs. 1700 1400 1265 1120 890 945 785 600

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8
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: Cyclone heavy duty mower (MJ30 & MJ31)
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: 14/11/2018
Name: John Murphy
Position: Managing Director

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PTO TUBES
MUST BE GREASED
EVERY 10 HOURS
CHECK TIGHTNESS
OF TRANSMISSION
BOLTS AFTER FIRST
8 HOURS OF WORK
Do not engage drive
while in transport
position
ATTENTION!
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
PTO entanglement
hazard - keep clear
of PTO drives.
Maximum PTO input
Grease PTO tubes
Check bolts
Grease points
Moving parts
Do not engage drive while
in transport position

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10
1
2
3
4
10
1
2
3
4
5
5
5
6
6
7
8
8
8
9
9
11
11
12
13
8
2
10
10
Key to Main Parts
1 Body
2 Transmission cover
3 A-Frame
4 Gearbox PTO cover
5 Rear roller
6Strap/Chain
7 Roller height indicator
8 Skid
9 Rubber skirt
10 Guards
11 A-Frame bu󰀨er stop
12 Wing
13 Blade

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MJ30-350/420/560 HR20617+
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
MJ30-350
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
MJ30-560
MJ30-420
HR20617+
HR20617+
HR20617+
280 CYCLONE
SR
06/02/2017
DrawnDate
7 / 7
Rev. Sheet Drawing No. TitleScale
1
Quantity
REF DRWG
MJ30-280-GA1
Stock Code:
Material:
10 FAB
20 WELD
40 PAINT G
42 PAINT Y
45 GALV
47 PLATE C
48 PLATE Z
50 ASSY
52 1FIX
55 2FIX
FAB
MCD
PU
IMP
www.major-equipment.com
Vendor
Finish
MAJOR
THEINFORMATIONCONTAINED IN THIS DRAWINGIS THE PROPERTY
OFMAJOREQUIPMENT INTL.LTD.
ANYREPRODUCTION IN PARTOR A WHOLE WITHOUT THE WRITTEN
PERMISSIONOF MAJOREQUIPMENTINTL. LTD. IS PROHIBITED.
LAS
LASF
PLA
PLAF
IF IN DOUBT ASK
ASSY
FAB
Vendor:
Route:
Route
Finish: SELF
PLATE Z
PLATE C
GALV
SELF
PAINT G
PAINT Y
WELD
CENTER BOX ROTATION REAR MOUNT
VIEWED FROM TOP, LOOKING AT MACHINE.
BLADE ROTATION
VIEWED FROM UNDERSIDE
CENTER BOX ROTATION FRONT MOUNT
VIEWED FROM TOP, LOOKING AT MACHINE.
(BOX IS 'ROTATED' FOR FRONT MOUNT).
805
945
935 935
12621524
667

FORWARD
Blade Rotation Viewed from Underside of Rear Mount
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
(BOX IS 'ROTATED' FOR FRONT MOUNT).
BLADE ROTATION
VIEWED FROM UNDERSIDE
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
(BOX IS 'ROTATED' FOR FRONT MOUNT).
BLADE ROTATION
VIEWED FROM UNDERSIDE
MJ31-250 MJ31-280
420DW CYCLONE ASSY
SR
14/02/2018
DrawnDate
2 / 2
Rev. Sheet Drawing No. TitleScale
0
Quantity
REF DRWG
MJ30-420-2-GA1
Stock Code:
Material:
10 FAB
20 WELD
40 PAINT G
42 PAINT Y
45 GALV
47 PLATE C
48 PLATE Z
50 ASSY
52 1FIX
55 2FIX
FAB
FIMP
MCD
PU
IMP
www.major-equipment.com
Vendor
Finish
MAJOR
THE INFORMATION CONTAINEDIN THIS DRAWING IS THE PROPERTY
OF MAJOR EQUIPMENT INTL. LTD.
ANY REPRODUCTIONIN PART ORA WHOLEWITHOUT THE WRITTEN
PERMISSIONOF MAJOR EQUIPMENT INTL.LTD. IS PROHIBITED.
LAS
LASF
PLA
PLAF
IF IN DOUBT ASK
FAB
Vendor:
Route:
Route
Finish:
PLATE Z
PLATE C
GALV
SELF
PAINT G
PAINT Y
GALVP G
WELD
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
MJ30-420DW
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
MJ30-630
MJ31-200
MJ31-300
MJ30-720
720 CYCLONE ASSY
SR
23/06/2020
DrawnDate
2 / 2
Rev. Sheet Drawing No. TitleScale
0
Quantity
REF DRWG
MJ30-720-GA1
Stock Code:
Material:
10 FAB
20 WELD
40 PAINT G
42 PAINT Y
45 GALV
47 PLATE C
48 PLATE Z
50 ASSY
52 1FIX
55 2FIX
FAB
FIMP
MCD
PU
IMP
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Vendor
Finish
MAJOR
THE INFORMATION CONTAINED IN THIS DRAWING IS THE PROPERTY
OF MAJOR EQUIPMENT INTL. LTD.
ANY REPRODUCTION IN PART OR A WHOLE WITHOUT THE WRITTEN
PERMISSION OF MAJOR EQUIPMENT INTL. LTD. IS PROHIBITED.
LAS
LASF
PLA
PLAF
IF IN DOUBT ASK
ASSY
FAB
Vendor:
Route:
Route
Finish: SELF
PLATE Z
PLATE C
GALV
SELF
PAINT G
PAINT Y
GALVP G
WELD
BLADE ROTATION VIEWED
FROM UNDERSIDE.
CENTER BOX ROTATION
VIEWED FROM TOP, LOOKING AT MACHINE.
Forward
Forward
Forward
Forward
Forward Forward
Forward Forward Forward
Blade rotation viewed from underside
Blade Rotation

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12
1
2
7
6
5
4
8
3
9
10
11
1
MJ30-630
MJ30/31-300
11
25
B-B ( 1 : 4 )
C-C ( 1 : 4 )
BB
C
C
755
B-B ( 1 : 4 )
C-C ( 1 : 4 )
BB
C
C
755
2
21
12
2
3
3
45
6
7
8
910
10
11
7
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
Blade system
Full breakdown of the blade assembly is provided in the Spare Parts section of this booklet
Drive-line gearboxes
Oil ller
plug
Oil level
plug
Primary gearbox Rotor gearbox
Oil level
plug
Oil ller
plug
Primary gearbox

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220519
Operating the Machine
Attaching machine to the Tractor
ALWAYS OPERATE ON LEVEL GROUND WHEN HITCHING/UNHITCHING THE IMPLEMENT. THIS WILL
PREVENT DANGEROUS MOVEMENT. NEVER ALLOW ANYONE TO STAND BETWEEN THE
TRACTOR AND THE MACHINE.
Three Point Linkage Models
1. Adjust both lift arms of the tractor until they are level in relation to each other.
2. Hitch the lower linkage arms to the Machine and connect the top link and PTO shaft. Ensure that the locking pins
are secure.
3. With the Machine lowered in its operating position, adjust the top link until the strap is slack, allowing the Machine
to produce a uniform nish in varying ground conditions.
4. Check the PTO shaft for length as described previously. Connect the PTO shaft. Ensure PTO check chains are
anchored to prevent PTO guarding from rotating.
5. Connect the hydraulic hoses to the appropriate connections (selected models only).
Trailed Models
1. Adjust the tractor hitch pin so that the hitch pin is approximately 400 mm (16”) from the end of the tractor PTO
shaft.
2. Adjust the machine hitch eye to suit the tractor drawbar height paying particular attention to keep both height
adjusting bolts as far as possible on the adjusting bracket. Careful adjustment of the hitch eye height at this stage
is necessary in order to allow the machine to function safely and correctly.
3. Connect the machine to the tractor. Ensure no one is standing between the tractor and the Machine.
4. Check the PTO shaft for length as described previously. Connect the PTO shaft. Ensure PTO check chains are
anchored to prevent PTO guarding from rotating.
5. Connect the hydraulic hoses to the appropriate connections (selected models only).

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14
Transport Position
Top Link Position
Transport Position
Before raising the machine wait until the transmission and the blades are completely still.
During the transport of the machine it is recommended that the PTO shaft is disconnected.
1. Check machine is hitched to the tractor as described. Ensure the tractor parking brake is applied
2. Ensure moving parts become still then transform the machine into transport position by hydraulic control
3. During the transport and any time the machine shall be raised, the raising device shall be adjusted to assure that the
machine is at least 250mm over the ground.
Transport Position (Winged models only)
The transport locking bars, transport pin and axle ram stopper should always be slotted into place while
transporting the machine. Doing this removes pressure from the hydraulic system. Failure to use the safety
equipment can cause mechanical as well as physical damage.
Transport Speed of Trailed models should not exceed 25 km/h.
Transport Position Transport Position

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21
3
Operating the Machine/Mowing
Never place limbs under the machine while rotors are turning. Rotors can remain turning for up to 1 minute
after disengaging PTO.
While operating this machine the PTO input rate should not exceed the RPM stated in the Product
Specications section of this booklet. Always operate on level ground when connecting/disconnecting the
implement. This will prevent dangerous movement.
Never allow anyone to stand between the tractor and the machine. Ensure the machine is attached correctly
to the tractor as previously described. Always start up the tractor PTO at a low RPM. Build up to operating
speed, select a suitable forward gear & proceed to cut grass.
1. Hitch the machine as outlined in the previous section. Ensure bystanders are clear from the machine & cannot be
hit with debris expelled from the machine.
2. Locate the Parking Jack on its side under the PTO shaft on the stub provided (Trailed models only)
3. Ensure the PTO stand is ipped down. (Trailed models only)
4. Check PTO shaft is fully engaged on tractor PTO splines.
5. Raise the machine by hydraulic control. (Trailed models only)
6. Flip back axle and drawbar ram stoppers. (Trailed models only)
7. Lower the machine by hydraulic control to the ground or use tractor linkage controls.
8. After clearing the vicinity of bystanders, relocate the Wing Transport Locking Bars. Lower the wings by hydraulic
control. Ensure hydraulic ram is fully closed. (Winged mowers only).
9. Start up the tractor PTO at a low RPM.
10. Build up to operating speed, select a suitable forward gear & proceed to cut grass.
Mowing Position Mowing Position
Mowing Position
Top Link position (otation restrictor)
To set the top links into mowing position lower the wings on level
ground. Adjust the top link so the pin (1) is located in the middle of
the slot (2). Lock the position by tightening the lock nut (3).
Top links limit the wing lift and prevent damage to wing PTO shafts
and gearboxes.

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5
6
3
4
2
1
1
Additional adjustments
Check chains can be tted to ensure the stability of the machine. Ensure that chains are tted as shown below.
• Install chain adjusters on or beside the top link on the tractor
• Attach chains to the machine via D-shackles.
• Adjust the length as necessary by using chain adjuster to suit your tractor.
Parking stand leg must be tted and secured with the pin before detaching machine from the tractor.
1D-shackle
2Top link
3Check chains
4Chain adjusters
5Parking stand
6Parking stand pin