SaMASZ PT3 190 User manual

SaMASZ Sp. z o.o.
ul. Trawiasta 1
16-060 Zabłudów
Polska
tel. (+48) (85) 664 70 31
fax (+48) (85) 664 70 41
e-mail: [email protected]
www.samasz.pl
OPERATOR'S MANUAL
Serial no.
The original operator’s manual
ENGLISH
IN0923EN003
2020.11.06
Edition No. 3
CIRCULAR SAW
PT3 190
PT4 250
PT3 190 F
PT4 250 F
Suitable for extension arms:
KWT
CAMEL
FISHER

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Well-proven design and quality materials ensure high reliability and durability of SaMASZ
machines.
We congratulate you on the purchase of your new SaMASZ circular saw and wish you much
pleasure and the very best experience resulting from its operation.
This operator's manual is indispensable part of any circular saw and is to familiarize future user
with principles of proper operation and use of the circular saw as well as with risks these encompass.
Prior to commissioning the circular saw the contents of the hereby manual and safety advices should
be learned thoroughly.
Prior to commissioning the circular saw operating instructions of the extension arm
KWT, Camel or Fisher must also be learned!
Apart from recommendations concerning designation of the machine, its proper use also
encompasses servicing and maintenance in good technical condition as well as application of
genuine spare parts only.
Circular saw should be operated, serviced and repaired only by personnel aware of its technical
data and safety precautions and procedures.
Provisions concerning accident prevention as well as any basic occupational health and safety
provisions and road traffic principles should always be followed.
The manufacturer does not bear any responsibility for damages resulting from unauthorized
repairs as well as modifications of the circular saw design without its prior permission.
GENERAL WARNING:
Instructions given in this operator’s manual marked with this symbol and
warning signs provided on the machine inform about a risk.
WARNING!
Operation of the machine before reading the operator’s manual carefully
as well as operating by the unauthorized staff, especially by children, is
strictly forbidden.
WARNING!
Do not operate when any person remains in the danger area
of 50 m (170').
NOTE:
Keep this manual for future reference .

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Content page
1. IDENTIFYING THE MACHINE .................................................................................................... 4
2. INTRODUCTION..................................................................................................................... 4
3. INTENDED USE AND DESIGN.................................................................................................... 5
3.1. Technical data .............................................................................................................................. 6
3.2. Design of circular saw ................................................................................................................... 6
3.3. Equipment and fittings:.................................................................................................................. 7
4. SAFETY PRECAUTIONS........................................................................................................... 7
4.1. General safety principles ............................................................................................................... 7
4.1.1. Connecting............................................................................................................................ 7
4.1.2. Transport .............................................................................................................................. 8
4.1.3. Transport and delivery ........................................................................................................... 8
4.1.4. Operating .............................................................................................................................. 9
4.1.5. Inspection and repair ........................................................................................................... 11
4.1.6. Replacement of damaged or worn parts................................................................................ 11
4.1.7. Storage ............................................................................................................................... 11
4.1.8. Qualifications of operator .................................................................................................... 11
4.1.9. Hydraulic assembly.............................................................................................................. 12
4.2. Residual risk ............................................................................................................................... 12
4.2.1. Danger of catching .............................................................................................................. 13
4.2.2. Danger of cutting limbs off................................................................................................... 13
4.2.3. Danger of injury and abrasion............................................................................................... 13
4.2.4. Danger of kick ..................................................................................................................... 13
4.2.5. Danger of damaging hearing ................................................................................................ 13
4.2.6. Danger of irritation to the respiratory tract............................................................................ 13
4.2.7. Danger of liquid ejection out of hydraulic system .................................................................. 13
4.3. Bans ........................................................................................................................................... 13
4.3.1. Residual risk evaluation ....................................................................................................... 14
4.4. Safety labels ............................................................................................................................... 14
5. USAGE................................................................................................................................16
5.1. Coupling the circular saw and an extension arm ........................................................................... 16
5.2. Circular saw control..................................................................................................................... 16
5.3. Transport position and drive ........................................................................................................ 17
5.4. Preparing circular saw for operation............................................................................................. 17
5.5. Safe commissioning and shutting down ....................................................................................... 18
5.6. Operation.................................................................................................................................... 18
6. MOUNTING AND ADJUSTMENTS.............................................................................................19
6.1. Mounting and dismounting circular blades ................................................................................... 19
6.2. Checking belt tension .................................................................................................................. 19
6.3. Transmission v-belts ................................................................................................................... 20
7. DEFECTS AND THEIR REPAIR..................................................................................................21
8. MAINTENANCE AND STORING ................................................................................................21
9. DISMOUNTING AND WITHDRAWAL FROM USE...........................................................................22
9.1. Repair ......................................................................................................................................... 22
9.2. Disassembly and scrapping ......................................................................................................... 22
9.3. Environment................................................................................................................................ 22
10. WARRANTY CARD..............................................................................................................23
11. WARRANTY TERMS............................................................................................................23
11.1. Warranty claim procedure ........................................................................................................ 23
11.2. Warranty repairs record ........................................................................................................... 25

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1. IDENTIFYING THE MACHINE
Each circular saw can be identified owing to data plate, which is placed firmly onto the saw body
as shown below in Fig. 1.
Fig. 1. Data plate and its placement
Data plate includes:
❑name and address of the manufacturer,
❑CE marking means, that the produce conforms to
2006/42/EC Directive and harmonized standards,
❑machine symbol,
❑date of manufacture,
❑model year,
❑version number,
❑machine weight,
❑id number,
❑barcode.
NOTE:
It is forbidden to drive the machine on public roads with damaged, illegible or
missing identification plate.
2. INTRODUCTION
❑This operator’s manual should be considered as the basic circular saw’s equipment. If the machine
is handed over to another operator, it should be in working condition and given away along with
operator’s manual and it’s other basic equipment.
❑Prior to operating the circular saw its user must familiarize himself with this manual as well as
common work safety rules.
❑The circular saw is manufactured in accordance with requirements of safety standards.
❑Respecting warnings herein shall ensure full operation safety.
❑If you have any questions related to commission and operation of the circular saw, please contact
the manufacturer.
❑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.

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3. INTENDED USE AND DESIGN
The circular saw is suitable exclusively for cutting tree branches, bushes with up to Ø120 mm (Ø12
cm) or similar works. Using it for purposes other than provided shall be considered as misuse.
Circular saw PT is designed to cooperate with the following extension arms:
❑KWT
❑Camel
❑Fisher
The circular saw may also be mounted on other type of extension arm with the same linkage type
or any other previously adapted.
Fig. 2. Circular saw mounting plate
WARNING!
Use of the machine for purposes other than mentioned herein is forbidden.
Different use than the above mentioned shall be considered as improper and
may lead to revoking of the warranty.
The machine should be operated, maintained and repaired only by personnel
who are familiarized with its detailed specifications and safety rules and
procedures. Willful modifications to the saw may lead to revoking the warranty.

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3.1. Technical data
Tab. 1. Technical data
Circular saw type
Characteristic parameters
PT3 –190
PT3-190 F
PT4 –250
PT4-250 F
Working width [m]
1,90
2,50
Circular blades [pcs]
3
4
Circular blade diameter [mm]
630
Max. cutting diameter [mm]
120
Required pump delivery rate [l/min]
85-100
55-70
85-100
55-70
Weight [kg]
195
250
Saw’s dimensions (length/width/height)
[mm]
1970/930/425
2605/930/425
Cooperation with extension arms
KWT
Camel
Fisher
KWT
Fisher
Mounting on extension arm
6 bolts M14x50
Nozzles of hydraulic hoses
M30x2
3.2. Design of circular saw
Fig. 3. Design scheme
A–Pulley
F–Circular saw mounting plate
B–V-belts
G–Frame
C–Tensioners
H–Saw bumper
D–Hydraulic engine
I–Circular blades (3 or 4, depending on model)
E–Nozzles of hydraulic hoses
J–Wedge
K –Sweep valve
A
B
C
D
E
K
F
G
I
J
I
H
J
I

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3.3. Equipment and fittings:
The machine are sold with the following standard equipment:
❑warranty card,
❑operator's manual with spare part list and the Declaration of Conformity,
❑spray paint (150 ml).
Equipment and spare parts:
❑all parts in the spare part list.
4. SAFETY PRECAUTIONS
WARNING!
Circular saw poses danger when used. It can exclusively be operated by a trained
person or a person under training and under supervision of an experienced
operator.
Each circular saw operator should be fully aware of potential risks resulting from
its operation and should know how these are avoided.
Whenever the circular saw is used, always make sure to use proper individual
protection equipment.
❑Safety helmet
❑Ear protection
❑Protective gloves
Operator should always have a first-aid kit within his reach (Journal of Laws
No. 12/98 item 51.).
4.1. General safety principles
4.1.1. Connecting
❑Mount and dismount the circular saw on an extension arm with the latter mounted on the tractor,
and when the whole aggregation is arrested by the tractor’s engaged parking brake. Prior to starting
the tractor, set the arm's foot in a position that is convenient for mounting the saw.
❑When connecting hydraulic hoses to the circular saw’s nozzles wear protective eyewear, protective
gloves and protective wear.
❑Mount and dismount the extension arm-circular saw aggregate to and from the tractor on even and
paved surface while keeping particular attention.
❑Never stand between the tractor and the machine, unless the tractor-extension arm aggregate is
protected against moving with the tractor's parking brake.
❑Tractor's 3-point linkage should be adjusted, so that stiff connection between the tractor and the
extension arm, onto which the circular saw is mounted, is the result.
❑Tractor with the mounted aggregation of extension arm and the circular saw should be balanced
in the manner, which allows stability of the whole aggregation of the tractor and extension arm.
❑Mount the circular saw on the extension arm only with use of genuine fittings and safety devices.
❑When connecting hydraulic hoses to tractor hydraulic connectors make sure, that either tractor or
the extension arm aggregate hydraulics are pressure free.
❑In order to have the drive transmitted from the tractor onto the extension arm aggregate, use a
manufacturer-recommended PTO shaft only.

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4.1.2. Transport
❑When driving on public roads always respect the local traffic regulations concerning warning lights.
❑When approaching transportation of the aggregation of the arm and the circular saw, take off or
partially disconnect PTO shaft from the tractor’s side.
❑Prior to the transport protect circular blades with an additional protective guard.
❑When transported the arm-saw aggregate shall have mobile warning light device and warning
triangle mounted for a slow driving vehicle.
❑When transported the machine should always be set in transport position. See Fig. 6.
❑Any modifications in the circular saw's position are possible only if no vehicles or unauthorized
personnel are around (children in particular).
❑Driving speed should always be adjusted to current road conditions.
❑Do not exceed permissible speed of 25 km/h.
4.1.3. Transport and delivery
Both carrier and driver are responsible for machine transportation. All equipment and parts must
be secured for transport. In order to move the machine onto any other means of transport follow the
below rules.
❑When hoisting do seize the points indicated for this purpose on the machine and labeled with a
hook symbol (Fig. 4) only,
Fig. 4. Manner of lifting saw when moving
❑For hoisting do use hoists with capacity bigger than the circular saw's weight as indicated on its
data plate. It also applies to the necessary cables and chains,
❑Transport belts, belt suspensions, ropes cannot be damaged. Whenever damages to these parts are
found, replace these with new ones,
❑When mounting slings, chains, clamps, etc. always keep in mind the centre of gravity of the machine
(Fig. 5) ,
❑For seizing the machines pick lines of adequate length, so that the angle between them was no
greater than 120°, and the angle of inclination between the cable and the vertical was no greater
than 60°,
❑collapsible elements should be locked in transport position,
❑when relocating the machine onto another vehicle, there should be no unauthorized personnel
permitted to remain within the danger area,
❑The machine should be protected from shifting on the vehicle's trailer.

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Fig. 5. Location of centre of gravity
Tab. 2. Location of centre of gravity
Dimension [mm]
Type
PT3 –190
PT4 –250
A
170
180
B
410
430
C
900
1150
WARNING!
Protecting the maneuver area and providing safety for operation performed is
responsibility of the person in charge of the machine moving.
4.1.4. Operating
❑During operation of the machine the Regulation of the Farm Ministry and Food Economy
(Rozporządzenie Ministra Rolnictwa i Gospodarki Żywnościowej) from 12.01.1998 dealing with
safety and hygiene during the operation of tractors, machinery, tools and equipment used for
farming (Journal of Laws No. 12/98 item 51), should be observed.
❑Before operating the circular saw learn content of this operator's manual and follow rules provided
by the Manufacturer herein.
❑Apart from this operator’s manual follow the instructions as given in the extension arm operator's
manual.
❑Do not use the circular saw for any purposes other than its intended use.
❑Do not introduce any design modifications without prior arrangements with the Manufacturer.
❑Failure to learn the operator’s manual can result in damaging the circular saw.
A
B
C

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❑The machine must not be operated by minors or handicapped persons.
❑Observe all safety signs, warnings or warning signs placed on the machine.
WARNING!
Be certain that children and animals are at a safe distance away from the
machine.
❑Unauthorized personnel and animals should be present in safe distance, which is at least 50 m
from the circular saw. Keep particular attention when operating near roads and lanes, where
presence of unauthorized personnel is likely.
❑When operating the arm-saw aggregation, the tractor should always be equipped with operator's
cabin.
❑Prior to operating, the machine should undergo a technical inspection paying particular attention
to condition of basic connections of machine’s assemblies as well as proper mounting of the
machine to a tractor.
❑Prior to commencing any works condition of circular blades must be examined, and if need be,
replaced with new ones.
❑Prior to starting tractor make sure that each drive is disconnected while control levers for
hydraulics are in neutral position.
❑Prior to moving make sure whether there are no unauthorized personnel directly nearby the
machine, give an acoustic signal.
❑The tractor’s engine must never be left running without supervision. Before leaving the tractor, turn
the engine off, set the aggregation of tractor and extension arm in standstill position and take the
ignition key out.
❑It is forbidden to drive the circular saw backwards when operating.
❑Cutting with the circular saw can only be started when PTO rpm rate reaches 540 or 1000 rpm
(depending on the extension arm used).
❑Perform any circular saw maneuvering only from the operator’s seat. DO NOT control from outside
the tractor’s cabin.
❑When cutting, the circular saw should be set so that the cutting plane is always parallel to the
tractor's driving direction and, if possible, perpendicular to the road surface (Fig. 7).
❑Operating speeds of the tractor and the extension arm-circular saw combination should be
adjusted to operating conditions such as: size and volume of the branches being cut, degree of the
ground unevenness.
❑It is recommended to keep low operating speed –with low tractor gears engaged. Applying higher
speeds may lead to damaging the circular saw and also the extension arm.
❑Do not operate the circular saw after dusk.
❑DO NOT leave the aggregation on any slopes without any additional protection.
❑The operator is not allowed to leave the tractor while driving.
❑In the event of any break in the equipment operation, turn off the drive.
❑Bear in mind that when operating and transporting the machine in areas where high voltage lines
are present, special caution should be exercised due to possibility of contacting the aggregate with
the lines.

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4.1.5. Inspection and repair
❑All inspection and repair related works should be performed with the tractor's engine off and the
tractor-cutting set combination is standstill position.
❑Bolts and other fasteners should be inspected on regular basis (tightening torque as
per Tab. 3). Operating with damaged or worn fasteners is not admissible.
❑Damaged or worn (aged 5 years or more) hydraulic hoses and other hydraulic parts should be
replaced with new ones as recommended by the manufacturer.
❑Examine condition of circular blades before commencing any operation. If blunt sharpen these.
Damaged or worn blades must be replaced with new ones.
❑Use only genuine spare parts, which can be ordered at our store or at your dealer.
❑When servicing hydraulic assembly, always wear protective gloves and eyewear. Hydraulic oil
leaking under pressure (16 MPa) may permeate through the skin and cause its infection thereafter.
If such is experienced, visit a doctor immediately.
❑In case of a fatal failure, stop the machine's drive, turn the tractor's engine off and take out the
ignition key. Then call for technical service, and if an accident (in this case: road accident) occurs,
respect first aid rules and contact responsible services.
WARNING!
Before maintenance and repair the machine, turn off the engine of tractor. All
rotating parts should be stopped.
4.1.6. Replacement of damaged or worn parts
❑Any works related to replacement of worn or damaged parts should be done only after the machine
has been switched off, and having previously learned the contents herein.
❑After the engine has been turned off and the ignition key removed, the vehicle should be secured
against any accidental movement.
❑When conducting repair works or replacing worn or damaged parts wear protective gloves,
protective footwear as well as protective clothing without any loose elements.
❑When operating with the machine lifted up, protect it properly with supports and when replacing
parts with sharp edges, use personal protective equipment and corresponding tools.
❑Once works related to replacement of defective parts are completed, mount back all elements of
guards and safety devices.
WARNING!
During replacement of working parts, it should be used personal protective
gloves.
4.1.7. Storage
❑Circular saw should be stored under a roof and protected against access of animals and
unauthorised persons who could get injured.
4.1.8. Qualifications of operator
To provide safe machine operation each person being the machine operator must meet the
following requirements:
❑Operator should hold driving license, have ability to drive vehicles safely and know road traffic rules.
❑Operator must be in proper physical condition to be able to operate the machine.
❑Operator must not be under the influence of alcohol, drugs and medicines, which all have influence
on vehicle driving and machine operation.

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❑Operator should be familiarized with this manual and follow its provisions.
❑Operator should be familiar with working principles of both the tractor and the machine, and be able
to recognize and avoid hazards resulting from operation of the aggregate.
4.1.9. Hydraulic assembly
❑Caution! Hydraulic assembly is under pressure! Hydraulic oil under pressure may permeate through
skin and cause serious injury, therefore skin and eyes should be protected in particular. In case of
injuries caused by a liquid under pressure, call a doctor immediately.
❑Hydraulic hoses can be connected to tractor's hydraulics, provided that both the extension arm’s
and the trimmer's hydraulic assemblies are not under pressure. To remove the pressure from the
hoses just simply restart the tractor's hydraulic valves several times, once the tractor is off.
❑When dismounting the machine from the tractor, set the equipment aside, deflate the pressure from
hydraulics and turn tractor's engine off.
❑When controlling for hydraulic assembly's malfunction and looking for oil leaks, it is forbidden to
touch any potential leaks until the entire assembly is under pressure.
❑Note! It is recommended to use hydraulic oil featuring oil purity class <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.
4.2. Residual risk
Despite the fact, that company SaMASZ–the manufacturer of the machine takes responsibility
for design and manufacturing of the rake, in order to eliminate dangerous situations, certain risk during
machine’s operation is unavoidable. Residual risk results from incorrect behaviour of the circular saw
operator.
Major source of risk follows performance of these operations:
❑operation of machine by minors as well as not being familiarized with operator's manual,
❑operation of machine by persons under influence of alcohol or other abusive substances,
❑not keeping caution while transportation and shifting of circular saw during operation,
❑transport of persons remaining on the machine,
❑presence of persons and animals within the machine operation range,
❑performing operations related to servicing and adjustment with engine on.
WARNING!
Present residual risk results mainly from erroneous actions taken by operator of
the circular saw and not respecting principles provided herein.
WARNING!
When describing residual risk, the circular saw shall be considered a machine,
which until the moment of production launching had been designed and
manufactured in accordance with top technology level actual as per the saw’s
manufacture date.

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4.2.1. Danger of catching
This kind of risk is present when position of machine is being changed, as a result of operating
near rotating parts.
During operation, maintenance and regulations always wear protective gloves, shoes and
clothes without loose parts, belts and so on. Always comply with safety decals placed on the machine.
4.2.2. Danger of cutting limbs off
Any contact of circular blades with hands leads to their amputation, and contact with body may be
fatal. Also operating without necessary caution or performing any inadmissible processing, e.g. moving
the saw perpendicularly to the cutting blades' plane may also cause such injuries.
4.2.3. Danger of injury and abrasion
This risk is present when replacing working parts with sharp edges, cleaning the machine,
removing the clogging and jams. During any maintenance and repair works, always wear safety gloves.
4.2.4. Danger of kick
Throwing out is one of the most dangerous phenomena, which are likely to occur when operating
circular saw. It is described as uncontrolled, sudden and very quick motion of an object or part of it
being treated (splinter, knurl, etc.). Direct impact of the material against human body may cause,
depending on this material weight and size, as well as speed and the impact location, bruises, injections,
loss of an eye, teeth, or even death due to damage to organs and vast internal hemorrhages.
4.2.5. Danger of damaging hearing
Of all non-mechanical threats, the most serious is the noise which usually exceeds the admissible
levels in excess for a normal 8-hour working day. For this reason, ear protection must always be used.
4.2.6. Danger of irritation to the respiratory tract
Lesser threat when cutting is also a dusty atmosphere as emission of significant fractions of fine
chips and dust. The operator thus should operate in a tight cabin with proper airflow.
4.2.7. Danger of liquid ejection out of hydraulic system
When connecting/disconnecting hydraulic hoses to and from tractor's hydraulic connectors make
sure that both tractor's and circular saw's hydraulics are pressure free, otherwise leak of oil under
pressure of approx. 16 MPa may occur. It also applies to damaged hoses. Therefore, when operating
hydraulic assembly, always wear protective gloves and eyewear. Inspect hydraulic hoses regularly.
4.3. Bans
BANS!
Bear in mind the following bans when operating the circular saw.
❑DO NOT clean impurities, make any adjustments or repairs when the saw is in motion.
❑Never change the sequence of operation and maintenance works specified herein.
❑Never use the circular saw, if it is not good operating condition.

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❑Never get near the circular saw’s working parts, which are in motion.
❑When performing the circular saw repair and maintenance works always comply with the
descriptions included in the operator's manual, while conducting them with the tractor's drive
disconnected.
❑Prior to approaching any works, focus your attention solely on the tasks to do.
❑Never operate the circular saw when being under influence of alcohol, drugs or medicines which
impair motor skills.
❑The circular saw cannot be operated by unauthorized and unskilled personnel.
❑Keep attention whether there are no unauthorized personnel or animals around the circular saw.
❑It is forbidden to cut tree branches and bushes, if the cutting plane goes through the tractor's cabin.
When describing residual risk, the circular saw shall be considered a machine, which until the
moment of its production had been designed and manufactured in accordance with the state-of-the-art
as per its manufacture date.
WARNING!
Despite following the specified instructions and prohibitions, residual risk is still
present.
4.3.1. Residual risk evaluation
When keeping such recommendations as:
❑thorough familiarizing with operator’s manual,
❑no persons remaining on the machine when operating and during drives,
❑no persons remaining within the machine operation range,
❑adjustment, maintenance and lubrication of the machine with engine off,
❑performing repairs of the machine only by skilled persons,
❑operation of the machine by persons, which are familiarized with operator’s manual,
❑in the event of the machine protection against children and unauthorized personnel residual risk
when operating the circular saw may be limited to necessary minimum.
In the event when avoiding or eliminating professional risk resulting from exposure
to noise is not possible through use of mass safety device or work organization, the
employer (farmer):
1) makes available personal hearing safety devices if the levels of noise in working
environment exceed 80 dB.
2) makes available personal hearing safety devices and ensures they are properly
used if the levels of noise in the working environment reach or exceed 85 dB.
4.4. Safety labels
WARNING!
Always follow the safety labels describing risks, and warning signs attached to
the machine.
WARNING!
a) all warning decals should be clean and legible,
b) lost or damaged decals must be replaced,
c) please order new decals from your dealer or supplier.

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WARNING!
Any assembly used for the circular saw repair should hold all warning decals
provided by the manufacturer.
N-02
N-03
N-04
Note! Cutting parts
Prior to operation commencement
read the operator's manual
carefully
Prior to approaching any
maintenance or repair works, turn
the machine off
N-06
N-07
N-40
Note! Rotating parts
Operating machine is forbidden
with any unauthorized personnel
within the danger area of 50 m
Transport holder
N-50
N-52
N-100
Do not remain in machine’s
swinging area
Wear protective gloves
Wear protective eyewear
N-102
N-103
N-168
Wear protective helmet
Wear ear protection
Do not touch machine parts until
all of its assemblies are stopped

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N-219
This applies to a Fisher-compatible circular saw
(motor with absorbing capacity of 26 cm3–without oil separation pipe)
5. USAGE
5.1. Coupling the circular saw and an extension arm
In order to mount the circular saw on an extension arm the following should be performed:
❑Prepare the circular saw to be mounted on an extension arm by setting it on an even, stable ground.
❑Lift the extension arm and drive at the prepared operating head.
❑Position the end of the extension arm so it is place for attaching the saw connection plate.
❑Turn tractor's engine off, secure with the parking brake and take ignition key off.
❑Couple both of the connection plates by proper tightening of six bolts M14 –apply proper torque
(Tab. 3).
❑Using hydraulic couplings.
WARNING!
For a Fisher-compatible circular saw version, the circular saw hydraulic motor
has no third oil separation pipe, and thus the return hose with female connector
at the end must be connected to the connector with pressure-less return line.
Otherwise hydraulic motor can be damaged.
If the vehicle has no hydraulic connector with pressure-less return line, refer to
the instruction manual, or consult the vehicle's manufacturer where pressure-
less return line can be connected to the tank.
5.2. Circular saw control
Controlling the circular saw is possible thanks to individual control panel of extension arm.
Operating instructions of the extension arm must be learned.

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5.3. Transport position and drive
Transport position of the circular saw aggregated with SaMASZ extension arm corresponds to
the arm's transport position. See Fig. 6.
In case of mounting the circular saw on other type of extension arm, put the circular saw
aggregated with the arm in the compact most position. Moreover, the circular saw should be positioned
so that its circular blade’s flat surface is perpendicular to the driving direction.
Fig. 6. Circular saw on extension arm transport position
❑Use any transport protective means as provided for controlling and design of the extension arm to
transport the aggregation of the arm and the saw.
❑For transport dismount PTO shaft and protect circular blades against accidental exposure to contact
with any third party.
❑Bear in mind the proper marking and lighting of the tractor-circular saw aggregate as a low-speed
vehicle to comply with road traffic provisions.
❑Driving speed should always be adjusted to current road conditions.
❑Transport speed on public roads cannot exceed the mean speed of 25 km/h.
5.4. Preparing circular saw for operation
Prior to operating the circular saw perform the following:
❑Thoroughly examine the circular saw, whether it is in operating condition and has no plays and
damages. Pay particular attention to condition of bolt connections and circular blades.
❑Take off any locks and safety devices mounted on the arm-saw aggregate,
❑Connect PTO shaft to the tractor.
❑Upon making sure there is no unauthorized personnel around, start the circular saw with no load
and reach the max. rpm for the circular saw, and then shut down and inspect for oil leaks.
❑If the circular saw's condition and its idle operation raise no doubts, start cutting with the circular
saw.
WARNING!
When cutting, the circular saw should be set so that the cutting plane is always
parallel to the tractor's driving direction and, if possible, perpendicular to the
road surface (Fig. 7).

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Fig. 7. Circular saw on extension arm operation position
5.5. Safe commissioning and shutting down
Prior to commencing operation look around whether there are no unauthorized personnel or
animals within the range of 50 m. Then position the circular saw in the desired operating position
(always parallel to the driving direction) and once completed, start the circular saw. As the required
PTO rpm rate of 540 or 1000 rpm is reached, the cutting action may be commenced.
Prior to stopping the circular saw first seize cutting by driving the circular saw into a space with
no branches or bushes around. Then turn off the circular saw drive and wait until circular blades come
to a complete stop. Now manipulating with the extension arm can be started in order to set the arm-
circular saw aggregate to transport position.
5.6. Operation
In order to provide proper high quality operation, as well as to maintain circular saw durability
follow these principles:
❑The circular saw can be used to cut tree branches, bushes, hedges with diameter of up to Ø120 mm
(12 cm).
❑Do nor allow the circular saw to get jammed, what may lead to its damage.
❑It is recommended that the operator prior to commencing cutting sets the circular saw in an
adequate position and does not modify such position on a single go. Such manner of operation
provides work safety and treatment aesthetics.
❑Longer branches should be cut gradually, while beginning from the top and ending at the bottom due
to a possibility of getting the circular saw jammed in the cut material.
❑Bear in mind to adjust driving speed to the thickness and quantity of the branches cut at once in
order not to overload the circular saw and thus prevent it from damaging.
❑When cutting thick and rigid branches (e.g. dried) ease off the circular saw's moment of contact with
a cut branch by significantly lowering the tractor's speed without reducing PTO rpm rate. In order to
avoid any impact contact what may cause damage to the circular saw.
❑When cutting do not make any perpendicular motion with the extension arm in relation to the cutting
plane as this may lead to getting the circular saw jammed and thus damaged.
❑The circular saw's cutting plane must always remain parallel towards driving direction and possibly
perpendicular to the ground on which the tractor is driving.
❑Do not operate the circular saw with any contamination wound onto circular blades' hubs, as this
may lead to their locking.
❑It is forbidden to use the circular saw for cutting any non-wooden materials.
90°

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❑For long operating periods, it is recommended, on few-hours basis (preferably every 3-4 hours of
operation), to periodically inspect circular blades, bolt connections, as well as the circular saw itself.
❑It is forbidden to operate the circular saw if damaged. In order to continue operating remove any
damages.
❑Blunt circular blades must be replaced with new ones.
6. MOUNTING AND ADJUSTMENTS
6.1. Mounting and dismounting circular blades
In order to replace a circular blade use wrench no. 17.
For dismounting a circular blade untighten all self-locking nuts (E) and unscrew all bolts (A). Next
remove holding disk (B), and then remove worn circular blade (C) from resistance disk pin (D) (Fig. 8).
To re-mount clean resistance disk (D) and install a new circular blade (C) onto resistance disk pin
(D). Next put back holding disk (B). Then tighten all bolts (A) through holes in holding disk (B)
and circular blade (C) into resistance disk (E) by tightening them with toque of 49 Nm. After this tighten
self-locking nuts (F) on bolts (A) and apply the torque of 49 Nm.
NOTE!
Bolt connections on the circular blade
must be examined every 5 working hours.
Fig. 8. Dismounting circular blade
6.2. Checking belt tension
Fig. 9. Checking belt tension

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Checking belt tension involves measuring belt strand deflection and should be performed
through inspection openings in the guard, which are plugged with rubber plugs, or upon dismounting
the guard.
In order to check the tension apply a load of 100N ~ 10kg in the belt strand half length L what gives
the deflection value U which should be 3÷12mm (Fig. 9).
6.3. Transmission v-belts
Fig. 10. Adjusting tension of V-belts
In order to perform adjustment of V-belts' tension follow the instructions:
1. Untighten nuts (1), and the remove bolts (2) (Fig. 10). To facilitate bolts (2) removal, slightly
turn the tensioner with key (3) no. 36 counter-clockwise.
2. In order to tension the belt turn the tensioner with key (3) counter-clockwise and position, so as
it is possible to put back bolts (2). Then check tensioning of the belts according to item 6.2.
The tensioner can be either tightened or loosened, if necessary.
3. Assemble the tensioner in a reverse order as the procedure given in step 1 above, paying
attention to bolt tightening torques from Tab. 3.
Tab. 3. Torque values for bolts