SaMASZ DUO 740 User manual

SaMASZ Sp. z o.o.
Poland, 16-060 Zabłudów, ul. Trawiasta 1
Established
–
1984
NIP PL-966-159-29-76
tel. (+48) (85) 664 70 31
fax (+48) (85) 664 70 41
e-mail: [e-mail]
www.samasz.pl
OPERATOR'S MANUAL
TWO-ROTOR IN-LINE RAKE
DUO 680
DUO 740
IN306USA002
2017.08.28
EDITION No. 2
Translation of the manual
Serial number

CAUTION:
It is forbidden to turn on rake drive before moving
the machine into its working position.
NOTE:
The manufacturer reserves the right to introduce modifications at any time,
and without notice.
NOTE:
Any repairs of the rake’s components bent after having been hit by
obstacles or stones are done on extra charge.
WARNING:
Do not lift the rake before its working units have come to
a complete standstill.
CAUTION:
Do not operate the rake when any person remains in the
danger area of 170'.
NOTE:
Keep this manual for future reference.
Well-proven design with thousands of machines in regular use in many countries and
quality materials ensure high durability and reliability of SaMASZ rakes.
We congratulate you on the purchase of your new SaMASZ rake and wish you much
pleasure and the very best work results through the years to come

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 1 -
Table of contents page
1. IDENTIFYING THE MACHINE................................................................................. 2
2. INTRODUCTION......................................................................................................... 2
3. PROPER AND INTENDED USE ................................................................................ 3
3.1. Technical data ................................................................................................................................. 3
3.2. Design and working principle......................................................................................................... 4
3.3. Standard equipment and spare parts ............................................................................................... 5
4. SAFETY PRECAUTIONS ........................................................................................... 6
4.1. General safety rules and regulations ............................................................................................... 6
4.2. Transport......................................................................................................................................... 8
4.3. Working parts ................................................................................................................................. 9
4.4. PTO shaft ........................................................................................................................................ 9
4.5. Hydraulic assembly......................................................................................................................... 9
4.6. Residual risk.................................................................................................................................. 10
4.7. Safety labels and their meaning .................................................................................................... 11
5. OPERATION .............................................................................................................. 14
5.1. Attaching the rake to the tractor ................................................................................................... 14
5.2. Preparing the rake for transport .................................................................................................... 15
5.3. Preparing the rake for transport on public roads........................................................................... 22
5.4. Preparing rake for transportation on a large truck ........................................................................ 22
5.5. Mounting PTO shaft ..................................................................................................................... 24
5.6. Moving from transport to working position ................................................................................. 25
5.7. Preparing the rake for operation ................................................................................................... 25
5.8. Raking width adjustment .............................................................................................................. 28
5.9. Operation ...................................................................................................................................... 29
5.10. Lifting the rake on turns .......................................................................................................... 30
5.11. Removing clogging and jams...................................................................................................... 31
5.12. Unmounting the rake from the tractor ........................................................................................ 32
6. MOUNTING AND ADJUSTMENTS........................................................................ 32
6.1. Mounting tines .............................................................................................................................. 32
6.2. Adjusting the sequence of rotor lifting ......................................................................................... 33
6.3. Daily maintenance ........................................................................................................................ 34
6.4. After-season maintenance and storing.......................................................................................... 34
6.4.1.Starting the rake after longer storing periods.............................................................................. 34
7. LUBRICATION.......................................................................................................... 35
7.1. Gear............................................................................................................................................... 35
7.2. Joints ............................................................................................................................................. 36
7.3. Risks present when lubricating the machine................................................................................. 36
8. MALFUNCTIONS AND THEIR REPAIRS ............................................................. 37
9. REPAIR AND WITHDRAWAL FROM USE........................................................... 37
9.1. Scrapping ...................................................................................................................................... 37
10. WARRANTY CARD................................................................................................. 37
11. WARRANTY TERMS .............................................................................................. 38
11.1. Warranty claims procedures .................................................................................................... 38
11.2. Warranty repairs record ........................................................................................................... 39

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 2 -
1. IDENTIFYING THE MACHINE
Data plate is mounted to the rake’s main frame in the place shown below in Fig. 1.
Fig. 1. Data plate location Fig. 2. Data plate
Data plate includes:
-
name and adress of the manufacturer,
-
model year,
-
CE marking means, that the produce
-
version number,
conforms to 2006/42/EC Directive and
-
machine weight,
harmonized standards,
-
id number,
-
machine symb
ol,
-
barcode.
-
date of manufacture,
2. INTRODUCTION
 This operator’s manual is essential for safe and proper use of this rake and should be read before
anyone operates this rake . It should be kept near the rake for future use. If the rake is used by
another operator, it should be in working condition and include this operator’s manual and all
other basic equipment.
 Operator’s manual is attached to every machine in order that the operator can familiarize
himself with design, working principles, service and adjustment of the rake. The operator
should be familiar with common safety rules and procedures.
 The rake is manufactured according to international safety rules.
 Compliance with the safety precautions in this operator’s manual will help to enable safe
operation.
 This operator’s manual is an indispensable part of any machine and is intended to familiarize
future user with principles of proper operation and use of the machine as well as the risks
involved.
 Please contact your dealer if you have any queries relating to the operation and service of
the rake.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 3 -
3. PROPER AND INTENDED USE
In-line rake DUO is designed to rake green forage, dried forage and hay. The rake should be
operated and repaired only by people familiar with its detailed specifications and with all applicable
safety rules and regulations and with the relative dangers.
WARNING:
Use of the rake for purposes other than described above is forbidden.
Improper use can be dangerous and may lead to voiding of the warranty.
Rake should be operated and repaired only by people familiar with its
detailed specifications and with all applicable safety rules and regulations
and with the relative dangers. Unauthorized modifications to the rake will
lead to voiding the warranty.
3.1. Technical data
Tab. 1. Specification of two-rotor rake
Model: DUO 680 DUO 740
Working width [ft. in] 17' 1"–20' 1" 18' –21' 1"
Rotor diameter [ft. in] 10' 2" 10' 6"
Transport width (max.) [ft. in] 9' 10" 8' 6"
Transport width (min.) [ft. in] 5' 11" 8' 6"
Admissible transport speed 25 km/h / 15 mph
Height in working position 4' 9"
Transport height [ft. in] 8' 6" 8' 6"
Transport length [ft. in] 28' 7" 29' 6"
Tractor's PTO rpm 540 rpm
Recommended drive's rotating speed 350-450 rpm
Power demand 37kW/50 HP 59kW/80 HP
Working capacity ~ 5 – 6.5 ha/h ~ 8.0 ha/h
Rotor count 2 pcs 2 pcs
Rotor arm count 2 x 11 pcs 2 x 11 pcs
Axis on rotors Tandem axis
Tires 18x8,5-8
Ground following wheels 18x8,5-8
Tire pressure 2.0 bar
Weight 1,720 kg / 3,792 lbs 2,060 kg / 4,541 lbs
Noise level L
pA
63,8 ± 3,2 dB
L
Amax
64,5 ± 3,2 dB
L
Cpeak
91,5 ± 3,2 dB
L
pA
– noise level related to 8 hour working time. Averaged in time acoustic pressure level corrected by
frequency characteristic A.
L
Amax
– maximum value corrected by frequency characteristic A of acoustic pressure level.
L
Cpeak
– peak level of acoustic pressure corrected by frequency characteristic C

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 4 -
3.2. Design and working principle
Fig. 3. Parts of DUO 680 two-rotor rake
Drawbar (1) enables mounting the rakes on 3-point linkage beam, which is part of each
tractor's equipment. Drive from tractor rpm is transmitted through intersecting axis gear (2) onto
rotary gear with shaft located on rake's front linkage (16). Rear rotor gear (21) is driven by gear (2),
roller located inside the linkage (5) and roller with homo-kinetic joint (18). Both rotors are
equipped with numerous raking arms (8, 3). Safety guards (13) reduce the risk of unwanted objects
getting into the area of rotor arms operating. The rake is equipped with adjustable swath guard both
on front and rear raking assembly (20, 15). Both assemblies are guided onto carts (14, 19).
1 – Drawbar
2 – Intersecting axis gear
3 – Safety guard
4 – Front rotor gear
5 – Joint linkage
6 – Turning cylinder
7 – Ground following lock cylinder
8 – Rear raking arm
9 – Tine
10 – Warning plate with lighting
11 – Drawbar's support leg
12 – Front support wheel
13 – Front safety guard
14 – Front cart
15 – Front swath guard
16 – Front linkage
17 – Rear support wheel
18 – Wide-angle shaft
19 – Rear cart
20 – Rear swath guard
21 – Rear rotor gear
6 7 8
201917151211 13
1 5 10 4
2114
2 9 3
1816

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 5 -
3.3. Standard equipment and spare parts
Rakes are sold with the following standard equipment:
 warranty card,
 operator's manual with spare part list and declaration of conformity,
 PTO shaft,
 spray paint (150 ml).
Optional extra equipment:
 twin wheels - set.
Tab. 2. Recommended PTO shaft for DUO 680 and DUO 740 rakes
Model Power Length Torque Symbol Clutch Manufacturer Remarks
HP
mm
Nm
DUO 680
DUO 740
35 4' 3"- 6' 1" 620 8G7R130CEWR7001 unilateral Bondioli
&
Pavesi
Fig. 4. PTO shaft lubrication points. Mounting directions
PTO shafts of other brands with equivalent parameters could be used after first obtaining SaMASZ
permission.
NOTE:
Optional extra equipment should be ordered separately.
The rake is equipped with optional equipment such as holders and brackets used to mount warning
lights and plates. Combined lights and reflectors are mounted on warning plates.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 6 -
4. SAFETY PRECAUTIONS
The following precautions are for your safety. They must be read carefully and
followed by every person who operates or maintains the machine. Failure to follow these safety
precautions could result in serious injury or death to the operator, maintenance person or
bystanders and property damage to the machine and surrounding property.
Safety Signal Words
This manual and the safety labels attached to this equipment utilize signal words that signify
safety hazards with different levels of severity. Below are the words used and the definitions
for these words:
•DANGER indicates a hazardous situation which, if not avoided, will result in death
or serious injury
•WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury
•CAUTION indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury
•NOTICE is used to address practices not related to physical injury
4.1. General safety rules and regulations
The following descriptions are for your safety: They must therefore be read
carefully and applied every time you use the machine.
 The machine has been designed for use by one single operator.
 When using, servicing, repairing, moving or storing the machine, the operator must wear safety
footwear, safety gloves plus ear protection and dusk mask if necessary.
 During use, the machine may give rise to dust, especially if the soil is dry. You are advised to
use a tractor with a cab fitted with filters in the ventilation system. Failing this, wear a dust
mask with filter to protect your respiratory tract
 Front axis of the tractor should be weighted to keep the balance. If need be, use front wheel
weights.
 In order to keep steering conditions, impact on front axis should be at least 20% of the complete
tractor.
 Be extremely careful whenever using hydraulic lift lever or buttons. Any operation with
hydraulic lift lever should be done from operator’s seat; DO NOT move the lever from outside
of a tractor.
 In case of tractors equipped with EHR, operating with hydraulic lift is done by the buttons
mounted outside the tractor’s cabin. When operating be extremely careful.
 When switching from working to transport position, remove the entire PTO shaft or at least one
end of the shaft from the tractor’s PTO so it cannot turn.
 When attaching the rake to a tractor, the operator should wear protective gloves.
 DO NOT operate the rake unless all safety guards are in place and operational. In addition, any
damaged protective aprons should be replaced with a new ones.
 No person (except operator) should stand within danger area which is a minimum of 170 ' from
any operating part, especially when operating near roads and in areas with stones and other
debris. Be certain that children and animals are at a safe distance away from the machine.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 7 -
IMPORTANT: Maintenance and adjustment should ONLY be done after the following has
occurred:
 tractor’s engine has been stopped and ignition key has been taken out,
 all rotating parts have come to complete standstill (NOTE: raking tines will rotate for
several minutes after engine is turned off),
 Never tamper with or remove safety devices on the machine or make them inoperable.
 Before starting work and periodically thereafter, replace any damaged, missing and/or worn
tines and holders.
 When driving on public roads always comply with local traffic regulations, especially those
concerning warning lights.
 When the rake is lifted for repair on 3-point linkage, it should be secured against falling by
mechanical support or by chain.
 The bolts and other fasteners have to be periodically checked and, if necessary, tightened or
replaced. DO NOT work with damaged or worn fasteners.
 Never lift the rake on tractor linkage when the drive is operating and the rotors are in motion.
 When operating the rake, the tractor should always be equipped with operator protection that is
required by laws and regulations.
 Rotating spring tines and other rotary elements pose danger to health and life of persons
remaining within the machine working range. Do not touch any moving machine parts.
 Never start the rake when the rotors are off the ground.
 Before you start the tractor make sure that all drives are turned off and the levers that turn the
hydraulics are in neutral position.
 Never leave tractor’s engine running without supervision. Before you leave the tractor, turn off
the engine and remove the key from tractor’s ignition.
 DO NOT operate the rake when driving the tractor backwards.
 Permissible inclination of the rake on a slope when working and during transport is 8°.
Exceeding this incline can result in rake tipover.
 Never stand between tractor and rake unless tractor and rake are secured against moving by the
tractor’s brake.
 If any maintenance must be done under an elevated rake, it must be blocked or otherwise
secured against falling.
 When the parts of the rake need replacement, use only original spare parts as described in the
spare parts list. Pay particular attention to PTO shaft’s guards and rake’s and tractor’s spline
shaft guards.
 Hydraulic hoses are potentially very dangerous. Do the following to minimize any hazards:
 Hydraulic hoses should be periodically checked and if any damage to the hoses have
occurred or if they have been used more than 5 years, replace with new ones.
 Never use scotch tape to repair hydraulic hoses.
 When connecting hydraulic hoses to tractor’s hydraulic connectors, make sure that
the tractor’s or rake’s hydraulic system is not under pressure.
 The rake should be stored under a roof and in a way as to not be hazardous both to people or
animals.
 In the event of an accident involving this rake in a field or on a road, follow all applicable first
aid procedures and contact SaMASZ technical service.
 Rake should be kept clean, so as to avoid danger of fire.
 The operator is not allowed to leave the tractor while driving.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 8 -
4.2. Transport
The lifting, handling and transporting operations can be very dangerous unless they are
carried out with the utmost caution. Have all persons not involved in the actual work move away
from the area and limit the zone where the operations are to be carried out. Also make sure that the
area in which the operations take place is clear and that there is a sufficient escape route, i.e. a free,
safe zone to which the operators can quickly move if the load should fall.
The safety hooks and ropes used to lift the machine must be of an adequate carrying capacity
To minimize the risk of serious injury or death, do the following:
 When the machine is converted from the transport position to the working position and vice
versa, you could be pinched or crushed by some of its parts. Take extra care when carrying out
these maneuvers and have all persons keep well clear of the danger zone.
 Do not change position of the rake until there are no people or animals around (pay particular
attention to children).
 While transporting the rake, put a warning plate with combined lights and reflectors and
warning triangle on the rake.
 During transport, always put the rake in its proper and safe transport position. See section 5.3.
 Before putting the rake in transport position, make sure that the tractor’s PTO is turned off and
all rotating parts have come to a complete stop.
 Do not drive over 25 km/h (15 mph). Drive slower if road conditions are poor, especially on
irregular surfaces or steep slopes.
 The behavior of the tractor on the road, such as its turning and braking capacities, are affected
by the implements mounted.
 When driving on the road after work, check to make sure that the tires and soil working tools
are clean to prevent the road surface from becoming dirty.
 Make sure that the machine is not damaged during transport.
4.2.1. Putting the rake onto another vehicle for transport
The driver and the carrier are responsible for the rake’s transport safety. Equipment and parts
must be secured during transport. To put the rake onto another vehicle in a safe way, please obey
the following rules.
 Transport should be done by qualified and specifically trained personnel,
 Grab the rake by any lifting devices only in places indicated by hook sign,
 For rake lifting, use only lifting devices with hoisting capacity larger than rake’s weight
shown in data plate. This also applies to ropes and chains used for lifting,
 Do not lift if transport belts, belt suspensions, ropes are damaged. Whenever damage to
these parts occurs, replace with new ones,
 When mounting slings, chains, handles etc., always set the machine's center of gravity
properly,
 To safely support the machine, use ropes of adequate length so that the angle between them
is no greater than 120°, and the angle between the strand and the vertical is no greater than
60°,
 Lift the machine with the utmost caution and move it slowly,
 No one should be within the range of action of the lifting equipment when any transporting
operations are being carried out,
 Collapsible parts should be blocked in transport position,
 When the rake is on the vehicle’s trailer, the machine should be secured against moving.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 9 -
X
Y
Fig. 5. Moving machine by transport holders
Fig. 6. Location of center of gravity on rakes
Tab. 3. Location of center of gravity
Dimension [ft. in] Model
DUO 680 DUO 740
X
14' 9" 17' 1"
Y
2' 5" 2' 2"
4.3. Working parts
 Before operating the rake check the condition of both the rotor and tines.
 Worn or damaged tines should be replaced immediately with new ones.
NOTE:
When replacing working parts wear protective gloves.
4.4. PTO shaft
 Before operating, read bar manufacturer's manual placed on the shaft. Follow all safety
precautions in that manual.
 Use only PTO shafts recommended by rake’s manufacturer with guards in good condition.
 In order to operate safely, use only undamaged PTO shafts and shields. Damaged PTO shafts
and shields must be repaired or replaced with new ones before use.
4.5. Hydraulic assembly
 Hydraulic assembly is under high pressure. Hydraulic oil under pressure may penetrate skin
and cause serious injury or death. Skin and eyes should be protected when working around this
assembly.
 In case of injury caused by a liquid under pressure, call a doctor immediately.
 Hydraulic hoses can be connected to the tractor's hydraulics provided that both the tractor’s and
the rake's hydraulic assemblies are not under pressure. To remove the pressure from the hoses,
start the tractor's hydraulic valves several times with the tractor off.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 10 -
 When looking for oil leaks, do so safely. Use a cardboard card. Do not touch any potential
leaks until the entire hydraulic assembly has been relieved of pressure.
 Use only hydraulic oil featuring oil purity class 9 - 10 in accordance with NAS 1638.
When using hydraulic hoses:
 Avoid stretching the hoses when operating.
 Do not allow hydraulic hoses to get deflected.
 Do not expose hydraulic hoses to contact with any sharp edges.
 If damaged or worn, replace the hoses with new ones.
 Useful life for hydraulic hoses is 5 years from their production date.
4.6. Residual risk
Despite the fact that SaMASZ, the manufacturer of the rake, has taken great care in the design
and manufacturing of the rake, certain risks during rake operation and maintenance are unavoidable.
A major source of risk that could result in serious injury or death can occur during the performance
of these operations.
Major source of risk follows performance of these operations:
 operation of rake by minors,
 operation by individuals who have not read the operator's manual and safety labels,
 operation of rake by persons under influence of alcohol or other substances,
 not being cautious during transportation and moving rake during operation,
 transport of persons who are on the machine,
 presence of persons and animals within the rake operation range,
 performing servicing and machine adjustments with the engine on.
4.6.1. Danger of machine entanglement
This risk occurs when (1) changing position of a rake, (2) operating near rotating parts, and
(3) working without safety guards. During operation, maintenance and adjustment, always wear
protective gloves, shoes and clothes without loose parts, belts and so on. Always comply with
safety labels placed on the rake.
4.6.2. Danger of wound, abrasion and damage of skin
Present when replacing working parts with sharp edges, cleaning the machine and removal of
any clogging and jams. For any repair and maintenance works always wear safety gloves.
4.6.3. Forbidden actions
During rake’s operation, do not do the following:
 never unblock the rake, make any regulations or repairs of the rake while it is in motion,
 never change order of operation and maintenance activities described in operator’s manual,
 never operate the rake when it is not in working order or has damaged safety guards,
 never get your hands and legs close to rotating parts of the rake,
 during repair and maintenance of the rake, always comply with descriptions included in
operator’s manual. Always do these activities when the tractor’s drive is off,
 never operate the rake under influence of alcohol, drugs, or strong medicine that impair your
attention,
 do not wear clothes or jewelry that are too loose or too tight. Too loose clothing or jewelry
may be pulled in by the rotating parts of the rake,
 the rake should not be operated by children or by handicapped people,
When describing residual risk, the rake complies with the state of the art in technology on the date it
was manufactured.

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 11 -
4.6.4. Residual risk assessment
Residual risk occurs from not complying with the instructions and safety precautions. Such
risk can be minimized by doing the following:
 thorough familiarizing yourself with operator’s manual,
 allow no persons on the machine when operating,
 allow no persons within the rake operation range,
 adjust, maintain and lubricate the machine with the engine off,
 only skilled persons should perform repairs of the machine,
 children and strangers must keep away when the machine is operating,
When the risk of exposure to noise cannot be avoided or eliminated by any
protective means or organization of work, the employer (farmer) must:
1) provide the operator with individual means of noise protection if the noise
level in work place exceeds 80 dB.
2) provide the operator with individual means of noise protection and supervise
the correctness of its usage, if the noise level in work place reaches or exceeds
85 dB
.
4.7.Safety labels and their meaning
Safety labels are critical to safe use of this rake. They must be read, understood and followed.
Also, be sure that:
 All warning decals are clean and legible
 All lost or damaged decals are replaced by ordering new decals from your dealer or supplier
 All persons using this rake have read the section of this manual explaining the meanings of
these labels
 All spare part used for repair of the rake should have all safety labels provided by the
manufacturer.
N-01
Be extremely careful when
PTO shaft is rotating!
N-03
Caution – read the
operator’s manual before
putting the rake into
operation!
N-04
Caution – while making
repairs the machine must be
stopped!
N-06
Caution – rotating parts
N-07
Operating is forbidden when any
person is within the danger
area of 50 m / 170 ft
N-11
Lubrication point
N-15

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 12 -
N-40
Transport hook for lifting of
the rake
N-49
Do not get too close to
the hoist of the tractor
during operation of the hoist
N-50
Do not get under the rake
N-55
N-117
Avoid fluid escaping
under pressure
N-124 N-136
Raking height adjustment
N-144
Description of hydraulic hoses
N-145
Regulation of the speed of hydraulic
cylinders lifting front frame
N-146
Regulation of the speed of hydraulic
cylinders lifting rear frame
N-156
Valve identifier V1
N-157
Valve identifier V2

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 13 -
Z-162
N-167
Do not remain on the
machine while driving
N-168
Do not touch the machine
before the rotating parts
have not come to a complete
standstill
N-183
Caution: danger of leg
drawing
N-196
Recommended tire pressure
rakes
N-201
Admissible transport speed
N-204 N-206
Use the required Personal
Protective
Fig. 7. Warning decals placed on the rake

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 14 -
5. OPERATION
WARNING:
Before beginning to use this machine, do the following:
- Read manual, especially safety precautions in section 4.
- Make sure you are familiar with all controls and functions.
- Make sure all safety devices are in place and working. Fix or replace if not
working or damaged.
- Replace protective cover if damaged.
5.1. Attaching the rake to the tractor
WARNING:
- Only hitch and unhitch machine on a flat surface with compact dirt.
- Keep everyone away from area between rake and tractor.
- Be careful near link road zone of tractor's rear power lift. Contains sharp
parts.
Rakes DUO 680 and 740 are adjusted to be attached to tractors by means of drawbar (1).
Connect the rake to tractor' links with pins (3) and protect them with cotters (4) (Fig. 8).
Fig. 8. Connecting the rake to a tractor
3
1
4

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 15 -
As the rake is mounted on the tractor, examine the longitudinal balance and steerability of
the tractor-rake aggregate. To do this, calculate to formulas given in the appendix or weigh the set,
and then drive on the scales only with front axis of the tractor. If the pressure on the front axis is at
least 20% of the whole set’s pressure, it means the set is stable. Otherwise, front axis should be
balanced.
Due to the fact that rake DUO 740 is equipped with hydraulic rear swath curtain folding
assembly it is necessary to additionally connect machine's controller (1) (see Fig. 9) to tractor's
lighter outlet (12V) by means of a plug (1) and a three-pin plug (3) to the socket (4) on the rake's
linkage. Fix the controller in tractor's cabin by means of magnetic holder in a visible place.
Controller ARDUO enables switching control between two-sided operation of the machine's rear
rotor and cylinder for lifting and lowering the rear swath curtain. The selected option is signaled
with the corresponding diode (6) under the option. To switch the work mode push button (5) on the
controller until the corresponding diode (6) is lit.
Fig. 9. Control panel ARDUO. 1- controller ARDUO, 2- lighter outlet 12V,
3- controller’s three-pin plug, 4– controller’s socket, 5 - work mode switch
button, 6- work mode diodes
NOTE:
When the controller is not plugged to 12V supply or there is no supply while working
hydraulic control of one of the cylinders (turning rear rotor or lifting rear swath curtain) will
be disabled.
5.2. Preparing the rake for transport
NOTE:
Moving the machine from working position to transport position, and other way round,
should only be done on a level and firm ground. Before any operations make sure that
nearby the machine there are no unauthorized personnel exposed to the risk of crushing.
In-line rake DUO 680 can be quickly moved to transport position and thus the transport
width of 9' 10" is obtained. With raking arms dismounted and protective curtains folded it is
possible to reduce it to 7' 10". To get the admissible rake DUO 740 width of 9' 10" at least
partially dismount raking arms and fold back the protective curtains according to the below
instructions.
2
1
34
5
6

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 16 -
In order to prepare the rake lifted on the tractor for transport do the following:
 Set rear rotor so it is perfectly aligned with the front by means of turning cylinder,
 For DUO 740, make sure that the controller ARDUO is set to rear rotor turning mode (Fig. 10),
Fig. 10. Controller ARDUO with rake's rear rotor turning mode ON
 After having been switched set the cylinder drive of the tractor until the rear rotor is aligned
with the front one (Fig. 11),
 If need be, adjust the cylinder by driving the tractor forward,
Fig. 11. Setting the proper transport position of the rear rotor
 Lift rear swath guard (
 Fig. 12 ),
 For DUO 680, manually lift the swath guard until it has been locked in vertical position by
pneumatic cylinders,
 For DUO 740, select the correct option on the control panel ARDUO by pushing a button until
the corresponding diode under the option has been lit up – in this case lifting the rear swath
guard. Turn the corresponding lever for two-side operation on the tractor until the rear swath
screen has been lifted completely.
Fig. 12. Lifting rear swath guard a) manually on DUO 680, b) hydraulically on DUO 740
Proper transport
position of the rear
rotor
Turn from
working position
DUO 680
DUO 740
Control panel
ARDUO
Rear rotor
turning mode
Rear swath
screen control
mode

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 17 -
 unlock front swath guard by removing safety linchpin (Fig. 13),
 slide the swath guard out,
 place the swath guard in transport housing located under the main frame,
 secure the swath guard with safety linchpin,
Fig. 13. Transport position of front rotor's guard
 For DUO 740, lock the rotations of the front rotor gear by means of locking assembly located
by front rotor according to instructions in Fig. 14 after firstly having folded the front guard (Fig.
15). Dismount the outer-most arms as in Fig. 18.
Fig. 14. Transport locking assembly for locking rotations of the front rotor gear (DUO 740)
NOTE:
The locking assembly on DUO 740 can be switched to “locked” position only with front
rotor protective guard folded (Fig. 15).
Transp
ort holder
of front swath
guard
Cotter
1. push 2. turn by 45º 3. push 4. turn by 45º 5. release

Operator's manual
Two-rotor in-line rake
DUO 680
DUO 740
- 18 -
Fig. 15. Front star guard lock (DUO 740)
 lift rake up to transport position, close shut-off valve for oil delivery to tractor located on carts’
cylinder's hose. Location of valve is provided in Fig. 16.
Fig. 16. Location of shut-off valve on rake DUO 680
In the above case rake DUO 680 transport width is 9' 10" (Fig. 17) and rake DUO 740 — 8'
10" (Fig. 18).
Protective guard
unfolded – cannot be
pushed
Protective guard
folded – can be
pushed freely and
gear locking assembly
can be rotated
Guard locking
hole