EN
INTRODUCTION 1
Dear Customer,
thank you for choosing one of our products. We hope that you will be completely satisfied with this
machine and that it fully meets your expectations. This manual has been compiled in order to provide
you with all the information you need to get acquainted with the machine and use it safely and efficiently. Don’t forget that it is an integral part of the machine, so keep it handy so that it can be consulted when necessary, and pass it on to a further user if you resell or loan the machine.
Your new machine has been designed and manufactured in pursuance with current regulations, and is
safe and reliable if used in compliance with the instructions provided in this manual (proper use). Using
the machine in any other way, or non-compliance with the safety specifications relative to use, maintenance and repair is considered "improper use" which will invalidate the warranty, relieve the manufacturer from all liabilities, and the user will consequently be liable for all and any damage or injury to
himself or others.
Since improvements are periodically made to our products, you may find slight differences between
your machine and the descriptions contained in this manual. Certain modifications can be made to the
machine without prior warning and without the obligation to update the manual, although the essential safety and function characteristics will remain unaltered. In case of any doubts, please contact your
dealer. And now enjoy your work!
CONTENTS
1. Identification of the main components ...................................... 2
2. Symbols ..................................................................................... 3
3. Safety requirements .................................................................. 4
4. Machine assembly ..................................................................... 8
5. Preparing to work ...................................................................... 9
6. How to start - Use - Stop the engine ...................................... 10
7. Using the machine ................................................................... 12
8. Maintenance and storage ........................................................ 15
9. Identification of faults .............................................................. 18
10. Accessories ............................................................................. 18
This chainsaw has been especially designed for tree maintenance
and should therefore only be used by trained operators when working on trees.
!
WARNING!
EN
MAIN COMPONENTS
1. Power unit
2. Front hand guard
3. Front handgrip
4. Rear handgrip
5. Chain catcher
6. Bar
7. Chain
8. Bar cover
9. Identification plate
CONTROLS AND REFUELLING
11. Engine stop switch
12. Throttle trigger
13. Throttle trigger lockout
14. Starter
15. Choke (if present)
16. Primer (if present)
21. Fuel tank cap
22. Chain oil tank cap
23. Air cleaner cover
2 IDENTIFICATION OF MAIN COMPONENTS
1. IDENTIFICATION OF MAIN COMPONENTS
IDENTIFICATION PLATE
10.1) Conformity marking in accordance
with Directive
2006/42/EC
10.2) Name and address
of the manufacturer
10.3) Acoustic output level LWA in
accordance with directive
2000/14/EC
10.4) Manufacturer’s model of reference
10.5) Machine model
10.6) Serial number
10.7) Year of manufacture
10.8) Article Code
10.9) Emission number
10.1
L
WA
dB
10.2
10.7
10.3
10.6
10.410.5
10.810.9
7
2
5
6 9
1
3
4
9
1113
12
15
1416
21
22
23
Maximum noise and vibration levels
For model ......................................................................... CJ 300
Operator ear noise pressure level
(ISO 22868)..................................................................... db(A) 94
- Measurement uncertainty (2006/42/EC - EN 27574) . db(A) 3,0
Measured acoustic output level
(ISO 22868)..................................................................... db(A) 106
- Measurement uncertainty (2006/42/EC - EN 27574) . db(A) 3,0
Vibration level (ISO 22867) ............................................. m/s
2
12,1
- Measurement uncertainty (2006/42/EC - EN 12096) ... m/s
2
1,5
EN
SYMBOLS 3
2. SYMBOLS
1) Read, understand and follow all warnings.
2) Warning! Danger of kickback.
3) Use the chain saw with two hands.
4) Read operator's instruction book before
operating this machine.
5) Wear head, eye and ear protection.
6) Wear strong working gloves.
7) Wear boots or protective shoes with grippy
soles and steel toecaps.
8) Use appropriate protections for foot-leg and
hand-arm.
9) This saw is for trained tree service operators
only.
11) Fuel tank
12) Chain oil tank
13) Engine stop switch
• Setting the switch
to the «I» position,
the engine starts
• Setting the switch
to the «O» position,
the engine stops
immediately
14) Carburettor adjustments
L = low speed mixture
adjuster
H = high speed mixture
adjuster
T - IDLE - MIN =
idle speed adjuster
15) Choke
• First-stage position –
starting mode when
the engine is warm
• Second-stage
position – starting
mode when the
engine is cold
16) Chain brake
(the symbol shows
the position in which
the brake is released)
17) Oil flow adjuster
• If you turn the rod by
screwdriver follow the
arrow to the «MAX»
position, the chain oil
flow more
• if you turn to the
«MIN» position, less
EXPLANATORY SYMBOLS ON THE MACHINE (if present)
EN
A) TRAINING
1) Read the instructions carefully. Become
acquainted with the controls and the proper use
of the machine. Learn how to stop the engine
quickly.
2) Only use the machine for the purpose for
which it was designed, that is for “felling, bu-
cking and delimbing trees with dimensions
suitable for the length of the bar” or wooden
objects with the same characteristics. Any other
use may be dangerous and damage the machine. Examples of improper use may include,
but are not limited to:
– trimming hedges;
– intaglio carving;
– sectioning pallets, crates and various packing
materials;
– sectioning furniture or other materials with
nails, screws or other metal components;
– butchering meat;
– using the machine to lift, move or split objects;
– using the machine while fastened to fixed
supports.
3) Never allow children or persons unfamiliar
with these instructions to use the machine. Local
regulations may restrict the age of the operator.
4) The machine must never be used by more
than one person.
5) Never use the machine:
– when people, especially children or pets are in
the vicinity;
– if the user is tired or unwell, or has taken me-
dicine, drugs, alcohol or any substances
which may slow his reflexes and compromise
his judgement;
– if the user is not capable of holding the machi-
ne firmly with two hands and / or remaining
standing on the ground whilst working.
6) Remember that the operator or user is responsible for accidents or hazards occurring to
other people or their property.
B) PREPARATION
1) Always wear adequate clothing which
does not hamper movements when using the
machine.
– Always wear slim-fitting protective clothing,
fitted with shear-proof protection devices.
– Always wear a helmet, protective gloves, eye-
goggles, a half-mask respirator and safety an-
ti-shear boots with non-slip soles.
– Always wear ear and hearing protection de-
vices.
– Never wear scarves, shirts, necklaces, or any
hanging or flapping accessory that could
catch in the machine or in any objects or ma-
terials in the work area
– Tie your hair back if it is long.
2) WARNING: DANGER! Fuel is highly flam-
mable:
– keep the fuel in containers which have been
specifically manufactured and homologated
for such use;
– never smoke when handling fuel;
– slowly open the fuel tank to allow the pressure
inside to decrease gradually;
– top up the tank with fuel in the open air, using
a funnel;
– add fuel before starting the engine. Never
remove the fuel tank cap or add fuel while
the engine is running or when the engine is
hot;
– if you have spilt some fuel, do not attempt to
start the engine but move the machine away
from the area of spillage and avoid creating
any source of ignition until the fuel has evapo-
rated and fuel vapours have dissipated;
– immediately clean up all traces of fuel spilt on
the machine or on the ground;
– never start the machine in the same place you
refilled it with fuel;
– make sure your clothing does not come into
contact with the fuel, on the contrary, change
your clothes before starting the engine;
– always put the tank and fuel container caps
back on and tighten well.
3) Replace faulty or damaged silencers.
4) Before using the machine, check its general
condition and in particular:
– the throttle trigger and the safety lever must
move freely, they must not need forcing and
should return automatically and rapidly back
to the neutral position;
– the throttle trigger must remain locked until
the safety lever is pressed;
– the engine stop switch must easily move from
one position to the other;
– the electric cables and in particular the spark
plug cable must be in perfect condition to a-
void the generation of any sparks, and the cap
must be correctly fitted on the spark plug;
– the machine handgrips and protection devices
must be clean and dry and well fastened to
the machine;
– the chain brake must be in perfect working or-
der;
– the bar and the chain must be fitted correctly;
– the chain must be tensioned correctly.
5) Before starting your work, make sure that all
the protection devices are correctly fitted.
C) OPERATION
1) Do not operate the engine in a confined space where dangerous carbon monoxide fumes
can collect.
2) Work only in daylight or good artificial light.
3) Take on a firm and well-balanced position:
4 SAFETY REQUIREMENTS
3. SAFETY REQUIREMENTS
– where possible, avoid working on wet, slippe-
ry ground or in any case on uneven or steep
ground that does not guarantee stability for
the operator;
– avoid using unstable ladders or platforms;
– do not work with the machine above your
shoulders;
– never run, but walk carefully paying attention
to the lay of the land and any eventual obsta-
cles.
– avoid working alone or in an isolated place, in
case you have to find help after an accident.
4) Make sure the machine is securely locked
when you start the engine:
– start the motor in an area at least 3 metres
from where you refuelled;
– check that there are no persons in the vicinity
of the machine;
– do not direct the silencer and therefore the ex-
haust fumes towards inflammable materials.
– watch out for flying debris caused by the mo-
vement of the chain, especially when it hits
obstacles or foreign objects.
5) Do not change the engine tuning and do
not rev the engine excessively at maximum
speed.
6) Do not strain the machine too much and do
not use a small chain-saw for heavy-duty sawing. If you use the right machine, you will reduce the risk of hazards and improve the quality of
your work.
7) Check that when the machine is running idle,
there is no movement of the chain and, after
pressing the throttle trigger, the engine quickly
returns to minimum speed.
8) Take care not to hit the bar hard against foreign objects or flying debris caused by the movement of the chain.
9) Stop the engine:
– whenever you leave the machine unattended;
– before refuelling.
10) Stop the engine and disconnect the spark
plug cable:
– before cleaning, checking or working on the
machine;
– after striking a foreign object. Inspect the
machine for any damage and make repairs
before restarting it again;
– if the machine begins to abnormally vibrate
(Immediate look for the cause of the vibrations
and take for necessary controls at a
Specialised Centre).
– when the machine is not in use.
D) MAINTENANCE AND STORAGE
1) Keep all nuts, bolts and screws tightly fastened to be sure the equipment is in safe working
condition. Routine maintenance is essential
for safety and for maintaining a high performance level.
2) Do not store the machine with fuel in the tank
in an area where the fuel vapours could reach an
open flame, a spark or a strong heat source.
3) Allow the engine to cool before storing in any
enclosure.
4) To reduce fire hazards, keep the engine, exhaust silencer and fuel storage area free from
sawdust, branches, leaves, or excessive grease;
never leave containers with the cut debris inside
the storage area.
5) If the fuel tank has to be emptied, this
should be done outdoors once the engine has
cooled down.
6) Always wear protective gloves when handling
the cutting device.
7) Make sure the chain is well sharpened. Any
work on the chain and bar require specific experience and special tools. For safety purposes, we
recommend you contact your dealer to ensure
work is done correctly.
8) For safety reasons, never use the machine
with worn or damaged parts. Damaged parts
are to be replaced and never repaired. Only
use original spare parts. Parts that are not of
the same quality can seriously damage the equipment and compromise safety.
9) Before putting the machine away, check you
have removed wrenches or tools used for maintenance.
10) Store the machine out of the reach of children!
E) TRANSPORTATION AND HANDLING
1) Whenever the machine is to be handled or
transported you must:
– turn off the engine, wait for the chain to stop
and disconnect the spark plug cap;
– mount the bar cover;
– only hold the machine using the handgrips
and position the bar in the opposite direction
to that used during operation.
2) When using a vehicle to transport the machine, position it so that it can cause no danger
to persons and fasten it firmly in place to avoid it
from tipping over, which may cause damage or
fuel spillage.
F) HOW TO READ THE MANUAL
Certain paragraphs in the manual contain particularly significant information and are marked
with various levels of highlighting with the following meaning:
or
These give details or further
information on what has already been indicated,
and aim to prevent both damage to the machine,
and the machine from causing damage..
Non-observance will result in the risk of injury to oneself or others.
Non-observance will result in the risk of serious injury or death to
oneself or others.
!
DANGER!
!
WARNING!
IMPORTANT
NOTE
SAFETY REQUIREMENTS 5
EN
6 SAFETY REQUIREMENTS
EN
3.1 WORKING WITH TREE SERVICE CHAINSAWS FROM A ROPE AND HARNESS
This chapter sets out working practices to reduce the risk of injury from tree service chainsaws
when working at height from a rope and harness.
While it may form the basis of guidance and training literature, it should not be regarded as a
substitute for formal training.
General requirements working at height
Operators of tree service chainsaws working at
height from a rope and harness should never
work alone.
A competent ground worker trained in appropriate emergency procedures should assist
them.
Operators of tree service chainsaws for this work
should be trained in general safe climbing and
work positioning techniques and shall properly
equipped with harnesses, ropes, strops, karabiners and other equipment for maintaining secure and safe working positions for both themselves and the saw.
Preparing to use the saw in the tree
The chainsaw should checked,
fuelled, started and warmed up
by the ground worker before it is
sent up to the operator in the
tree.
The chainsaw should be fitted
with a suitable strop for attaching to the operator’s harness:
a) choke the strop around the attachment point
on the rear of the saw (A);
b) provide suitable karabiners to allow indirect
(i.e. via the strop) and direct attachment (i.e.
at the attachment point on the saw) of saw to
the operators harness;
c) ensure the saw is securely attached when it is
being sent up to the operator;
d) ensure the saw it secured to the harness
before it is disconnected from the means of
ascent.
The saw should only be attached to the recommended attachment points on the harness.
These may be at mid-point (front or rear) or at
the sides.
Where possible attaching the
saw to centre rear mid-point
will keep it clear of climbing
lines and support its weight
centrally down the operator’s
spine.
When moving the saw from any attachment
point to another, operators should ensure it is
secured in the new position before releasing it
from the previous attachment point.
Using the chainsaw in the tree
An analysis of accidents with these saws during
tree service operations shows the primary cause
as being inappropriate one-handed use of the
saw. In the vast majority of accidents, operators
fail to adopt a secure work position witch allows
them to hold both handles of the saw.
This results in an increased risk of injury due to:
• not having a firm grip on the saw if it kicks
back;
• a lack of control of the saw such that it is more liable to contact climbing lines and operators body (particularly the left hand and arm)
• losing control from insecure work position resulting in contact with the saw (unexpected
movement during operation of the saw).
(A)
SAFETY REQUIREMENTS 7
EN
Securing the work position
for two-handed use
To allow the operator to hold the saw with both
hands, they should as general rule, aim for secure work position where they are operating the
saw at:
• hip level when cutting horizontal sections;
• solar plexus level when cutting vertical sections.
Where the operator is working close into vertical
stems with a low lateral forces on their work
position, then a good footing may be all that is
needed to maintain a secure work position.
However as operators
move away from the
stem, they will need to take steps to remove or
counteract the increasing
lateral forces by, for example, a re-direct of the
main line via a supplementary anchor point or
using an adjustable strop
direct from the harness to
a supplementary anchor
point.
Gaining a good footing at
the working position can
be assisted by use of a
temporary foot stirrup
created from an endless
sling.
Starting the saw in the tree
When starting the saw in the tree, the operator
should:
a) apply the chain brake before starting;
b) hold saw on either the left or right of the
body when starting:
1) on the left side hold the saw with either the
left hand on the front handle or the right hand
on the rear handle and thrust the saw away
from the body while holding the pull starter
cord in the other hand;
2) on the right side, hold the saw with the right
hand on either handle and thrust the saw away from the body while holding the pull starter cord in the left hand.
The chain brake should always be engaged
before lowering a running saw onto its strop.
Operators should always check the saw has sufficient fuel before undertaking critical cuts.
One-hand use of the chainsaw
Operators should not use tree service chainsaws
onehanded in place of unstable work positioning
or in preference to a handsaw when cutting small
diameter wood at the branch tips.
Tree service chainsaws should only be used
one-handed where:
• the operator cannot
gain a work position enabling twohanded use; and
• they need to support their working
position with one
hand; and the saw
is being used at full
stretch, at right angles to and out of line with
the operator’s body.
Operators should never:
• cut with the kickback zone at the tip of the
chainsaw guide bar
• “hold and cut” sections
• attempt to catch falling sections.
Freeing a trapped saw
If the saw should become trapped during cutting, operators should:
• switch off the saw and attach it securely to the
tree inboard (i.e. towards the truck side) of the
cut or to a separate tool line;
• pull the saw from the kerf whilst lifting the
branch as necessary;
• if necessary, use a handsaw or second chain
saw to release the trapped saw by cutting a
minimum of 30 cm away from the trapped
saw.
Whether a handsaw or a chainsaw is used to free
a stuck saw, the release cuts should always be
outboard (toward the tips of the branch), in order
to prevent the saw being taken with the section
and further complicating the situation.
The machine is supplied
with the bar and chain dismantled and the oil and
fuel tanks empty.
Unpacking and completing the assembly should be done on a flat and
stable surface, with enough space for moving
the machine and its packaging, always making use of suitable equipment.
Disposal of the packaging should be done in
accordance with the local regulations in
force.
Always wear heavy-duty
gloves when handling the bar and chain.
Mount the bar and chain very carefully so as
not to impair the safety and efficiency of the
machine. If in doubt, contact your dealer.
Before fitting the bar, make sure the chain brake
is not engaged; this is done by pulling the front
hand guard right back towards the body of the
machine.
A standard saw unit package contains the items
as illustrated (Fig. 1).
(1) Power unit
(2) Bar protector
(3) Guide bar
(4) Saw chain
(5) Plug wrench
(6) Screwdriver for carburetor adjustment
1. INSTALLING GUIDE BAR
AND SAW CHAIN
Open the box and install the guide bar and the
saw chain on the power unit as follows (Fig. 2):
– Loosen the nuts and remove the chain cover
(1).
– Fix the support (2) on the rear of power unit by
screw.
– Mount the guide bar then fit the saw chain
around the bar and sprocket.
!
WARNING!
!
WARNING!
IMPORTANT
Play attention to the correct
direction (3) of the saw chain.
– Fit the chain tensioner nut (4) into the lower
hole (5) of the guide bar, then install the chain
cover, and fasten the mounting nut (6) to finger
tightness.
When installing the chain
cover, be sure to fit the hook completely at
the rear end of the cover.
– While holding up the tip of the bar, adjust the
chain tension (7) by turning the tensioner
screw until the tie straps just touch the bottom
side of the bar rail.
– Tighten the nuts (6) securely with the bar tip
held up (12 ~ 15 Nm). Then check the chain for
smooth rotation and proper tension while
moving it by hand. If necessary, readjust with
the chain cover loose.
– Tighten the tensioner screw (7).
2. CHECKS AFTER MOUNTING
THE BAR AND THE CHAIN
– Check the chain tension. The tension is cor-
rect when the drive links do not slip out of the
chain guides if you hold the chain in the middle of the bar (Fig. 3).
– Using a screwdriver, make the chain run along
the guides to check it moves smoothly without
resistance.
!
WARNING!
NOTE
8 MACHINE ASSEMBLY
EN
4. MACHINE ASSEMBLY
PREPARING TO WORK 9
EN
CHECKING THE MACHINE
Before starting work please:
– check that all the screws on the machine and
the bar are tightly fastened;
– check that the chain is sharp and there are no
signs of any damage;
– check that the air filter is clean;
– check that the protection devices are well fa-
stened and working efficiently;
– check that the handgrips are well fastened;
– check that the chain brake is working effi-
ciently.
PREPARING THE FUEL
This machine is fitted with a two-stroke engine
which requires a mixture of petrol and lubricating
oil.
Using petrol alone will damage the motor and will cause for invalidation of
the warranty.
Only use quality fuels and
oils to maintain high performance and guarantee
the duration of the mechanical parts over time.
• Petrol characteristics
Only use unleaded petrol with a fuel grade of at
least 90 N.O.
If you use a gasoline of a lower octane value than prescribed, there is a danger that the engine temperature may rise and an
engine problem such as piston seizing may consequently occur.
Unleaded petrol tends to
create deposits in the container if preserved for
more than 2 months. Always use fresh petrol!
• Oil characteristics
Only use top quality synthetic oil specifically for
two-stroke engines.
Your dealer can provide you with oils which have
been specifically developed for this type of engine, and which are capable of guaranteeing a
high level of protection.
The use of these oils makes it possible to prepare a 2.5% mixture, consisting in 1 part oil to 40
parts petrol.
IMPORTANT
IMPORTANT
IMPORTANT
IMPORTANT
• Preparation and preservation
of the fuel mixture
Petrol and the fuel mixture are highly inflammable!
– Keep the petrol and fuel mixture in homo-
logated fuel containers, in safe place, away
from any flames or heat sources.
– Never leave the containers within the reach
of children.
– Never smoke whilst preparing the mixture
and avoid inhaling the petrol fumes.
The chart indicates the amount of petrol and oil
to use to prepare the fuel mixture according to
the type of oil used.
To prepare the fuel mixture:
– Place about half the amount of petrol in a ho-
mologated tank.
– Add all the oil, according to the chart.
– Add the rest of the petrol.
– Close the top and shake well.
Be careful that, if the agitation is insufficient, there is an increased danger
of early piston seizing due to abnormally lean
mixture.
The fuel mixture tends to
age. Do not prepare excessive amounts of the
fuel mixture to avoid deposits from forming.
Keep the petrol and fuel
mixture containers separate and easily identifiable to avoid the mistake of using one in place of
the other.
Periodically clean the petrol
and fuel mixture containers to remove any eventual deposits.
IMPORTANT
IMPORTANT
IMPORTANT
IMPORTANT
!
DANGER!
5. PREPARING TO WORK
Petrol Synthetic oil 2-stroke
liters liters cm
3
1 0,025 25
20,0550
3 0,075 75
5 0,125 125
10 0,25 250
EN
Moreover, normal wear and
change in product with no functional influence
are not covered by the warranty. Also, be careful
that, if the usage in the instruction manual is not
observed as to the mixed gasoline, etc. described therein, it may not be covered by the warranty.
REFUELLING
Never smoke whilst refuelling and avoid inhaling the petrol fumes.
Carefully open the tank
top as pressure could have formed inside.
Before refuelling:
– Shake the fuel mixture container well.
– Place the machine on a flat stable surface,
with the fuel tank cap facing upwards.
– Clean the fuel tank cap and the surrounding
area to avoid any dirt from entering the tank
during refilling.
– Carefully open the fuel tank cap to allow the
pressure inside to decrease gradually. Use a
funnel to refill and avoid filling the tank to the
brim.
Always close the fuel tank
cap firmly.
!
WARNING!
!
WARNING!
!
DANGER!
IMPORTANT
Immediately clean all traces of fuel which may have dripped on the
machine or the ground and do not start the
engine until the petrol fumes have dissipated.
CHAIN LUBRICANT
Only use special oil for chain
saws or adhesive oil for chain saws. Do not use
oil containing impurities so as not to block the oil
filter and to prevent irreparable damage to the oil
pump.
The special oil for lubricating the chain is biodegradable. Use of a mineral
oil or engine oil causes serious damage to the
environment.
It is essential that you use good quality oil to
lubricate the cutting parts effectively. Used or
poor quality oil does not guarantee good lubrication and reduces the duration of the chain and
bar.
It is always worth topping up the oil tank completely (using a funnel) every time you refuel.
Since the oil tank capacity is enough to guarantee that the fuel runs out first, you will avoid the
risk of operating the machine without lubricant.
IMPORTANT
IMPORTANT
!
WARNING!
• To start the engine (Fig. 4):
– Continuously push the priming bulb (1) until
fuel comes in the bulb.
– Set the switch (2) to «I» position.
– Pull out the choke knob (3) to the second-sta-
ge position. The choke will close and the
throttle lever will then be set in the starting position.
When restarting immediately after stopping the engine, set the Choke knob
in the first-stage position (choke open and throttle lever in the starting position).
NOTE
STARTING THE ENGINE
The engine must be started in an area at least 3 metres from where
you refilled the fuel tank.
Before starting the engine:
– Take off the bar cover.
– Make sure the bar is not touching the ground
or any other object.
– Fill fuel and chain oil tanks respectively, and
tighten the caps securely.
!
WARNING!
10 PREPARING TO WORK / HOW TO START - USE - STOP THE ENGINE
6. HOW TO START - USE - STOP THE ENGINE
EN
HOW TO START - USE – STOP THE ENGINE 11
Once the choke knob has
been pulled out, it will not return to the operating
position even if you press down on it with your
finger. When you wish to return the choke knob
to the operating position, pull out the throttle lever instead.
Before you start the engi-
ne, make sure the saw chain is not contacting
anything.
• Starting the engine on the ground
Keep clear of the saw
chain as it will start rotating upon starting of
engine.
Do not start the engine
while the chain saw hangs in one hand. The
saw chain may touch your body. This in very
dangerous.
– While holding the saw unit securely on the
ground, pull the starter rope vigorously (Fig. 5).
– When engine has ignited, first push in the
choke knob to the first-stage position and
then pull the starter again to start the engine.
– Allow the engine to warm up with the throttle
lever pulled slightly.
• Starting the engine on a tree
Carefully follow the in-
structions under “For your safety” (3.1).
USE OF THE ENGINE (Fig. 6)
The chain speed is regulated by the throttle trigger (1) on the rear handgrip.
The throttle trigger only works if the lockout (2) is
pressed at the same time.
The movement is transmitted from the engine to
the chain by a centrifugal mass clutch that prevents the chain from moving when the engine is
running at minimum speed.
!
WARNING!
!
WARNING!
!
WARNING!
!
WARNING!
NOTE
Do not use the machine if
the chain moves when the engine is running
idle; in this case, contact your dealer.
The correct running speed will be achieved by
pressing the throttle trigger (1) as far as possible.
Avoid using the engine at
full power for the first 6-8 working hours.
STOPPING THE ENGINE (Fig. 6)
To stop the engine:
– Release the throttle trigger (1) and allow the
engine to run idle for a few seconds.
– Set the switch (3) to «STOP».
When you have reduced
speed to a minimum, it will take a few seconds for the chain to stop.
!
WARNING!
IMPORTANT
!
WARNING!
EN
To respect people and the environment:
– Try not to cause any disturbance.
– Scrupulously comply with local regulations
and provisions for the disposal of waste
materials after sawing.
– Scrupulously comply with local regulations
and provisions for the disposal of oils, petrol, damaged parts or any elements which
have a strong impact on the environment.
Always wear suitable clothing when using the machine. Your dealer
can provide you with all the information on
the most suitable accident-prevention devices to guarantee your safety.
Use the vibration-proof glove.
All the above mentioned precautions do not
guarantee that you will not sustain whitefinger diseaseor carpal tunnel syndrome.
Therefore, continual and regular users should
monitor closely the condition of their hands
and fingers. If any of the above symptoms appear, seek medical advice immediately.
It takes specific training to
use the machine for felling and delimbing.
Keep all parts of your body away from the saw chain when the engine
is running.
Never cut in high wind,
bad weather, when visibility is poor or in very
high or low temperatures.
Always check the tree for dead branches
which could fall during the felling operation.
Do not operate the chain
saw in a tree unless specially trained to do so.
CHAIN BRAKE (Fig. 7)
This machine comes with an automatic brake
that stops the chain when kickback occurs during cutting.
!
WARNING!
!
WARNING!
!
WARNING!
!
WARNING!
!
WARNING!
This brake can be operated manually by pushing
the front guard forward. To release the brake,
pull the front guard towards the handgrip until
you hear a click.
Do not use the machine if
the chain brake does not function correctly
and have it inspected by your dealer.
The chain brake is a device which stops the
chain instantaneously if the chain saw recoils
due to kickback.
Normally, the brake is activated automatically by
inertial force. It can also be activated manually
by pushing the brake lever (left-hand guard)
down toward the front.
When the brake operates, a yellow cone pops up
from the base of the brake lever.
• Releasing the Brake
Pull the brake lever up toward the left-hand handle until it clicks into place (1).
When the brake operates,
release the throttle lever to slow down the
engine speed. Continuous operation with the
brake engaged will generate heat from the
clutch and may cause trouble.
At machine inspection prior to each job,
check the operating condition of the brake
following the steps.
– Start the engine and grasp the handle secure-
ly with both hands.
– Pulling the throttle lever to maintain the chain
operation, push the brake lever (left-hand
guard) down toward the front using the back
of your left hand.
– When the brake operates and the chain is
stopped, release the throttle lever.
– Release the brake (2).
CHECKING THE CHAIN TENSION
The chain tends to stretch gradually as you
work, so you need to check its tension frequently.
!
WARNING!
!
WARNING!
12 USING THE MACHINE
7. USING THE MACHINE
Never work with the chain
loose, as it can be hazardous if the chain slips
out of its guides.
CHECKING THE OIL DELIVERY
Never use the machine without lubrication! The oil tank may get almost
empty every time the fuel runs out. Make sure
you top up the oil tank every time you refuel the
chain-saw.
Make sure the bar and the
chain are in place when you check the oil
delivery.
Start the engine, keep it running at medium power and check if the chain oil is delivered as
shown in the figure (Fig. 8).
The chain oil flow can be changed by inserting a
screwdriver in the hole on bottom of the clutch
side. Adjust according to your work conditions.
(Fig. 8).
DIRECTIONS FOR USE AND CUTTING
TECHNIQUES
Before felling or delimbing for the first time, practise sawing logs on the ground or on trestles, so
that you can get familiar with the machine and
the most suitable sawing techniques.
Stop the engine immediately if the chain stops during sawing. Beware of kickback, which can occur if the bar
contacts an obstacle.
Kickback occurs when the tip of the chain comes in contact with an object or when the
wood contracts and jams the chain during sawing.
This contact with the tip of the chain can cause a rapid backward motion, pushing the guide bar up and towards the operator. This also
happens when the chain is jammed along the
upper part of the bar. In both cases, kickback
can cause the operator to lose control of the
chain-saw, leading to serious consequences.
!
WARNING!
!
WARNING!
IMPORTANT
!
WARNING!
• Before proceeding to your job, read the
section “For Safe Operation”. It is recommended to first practice sawing easy logs.
This also helps you get accustomed to your
unit.
• Always follow the safety regulations. The
chain saw must only be used for cutting
wood. It is forbidden to cut other types of
material. Vibrations and kickback vary with
different materials and the requirements of
the safety regulations would not be respected. Do not use the chain saw as a lever for
lifting, moving or splitting objects. Do not
lock it over fixed stands. It is forbidden to
hitch tools or applications to the PTO other
than those specified by the manufacturer.
• It is not necessary to force the saw into the
cut. Apply only light pressure while running
the engine at full throttle.
• When the saw chain is caught in the cut, do
not attempt to pull it out by force, but use
a wedge or a lever to open the way.
• Delimbing (Fig. 9)
Make sure there is nothing or nobody in the area where the branches
will fall.
For pruning high up using
a rope and a belt slings, carefully follow the
instructions under “For your safety” (3.1).
• Do not work standing on unstable bases or
rung ladders.
• Do not overreach.
• Do not cut above shoulder height.
– Stand opposite the branch you want to cut.
– Start cutting lower branches followed by the
higher ones.
– Cut downwards to prevent the bar from get-
ting jammed.
• Felling (Fig. 10)
When felling on slopes,
always stand uphill from the tree and check
that the felled trunk cannot cause damage if
it rolls down the hill.
!
WARNING!
!
WARNING!
!
WARNING!
!
WARNING!
!
WARNING!
USING THE MACHINE 13
EN
– Decide where the tree should fall - you should
consider the wind, the natural lean of the tree,
the position of the heaviest branches and how
easy the work is after felling, etc.
– Clear the area around the tree and find a sta-
ble place to stand.
– Plan obstacle-free escape routes at a 45° an-
gle back and away from the direction of fall.
These routes must allow you reach a safe area
at a distance of about 2.5 times the length of
the tree to be felled
– On the side of the fall, mark a felling notch a-
round a third of the trunk’s diameter.
– Cut the tree on the other side, slightly above
the bottom of the notch, leaving the uncut
wood to act as a “hinge” (1) of approx. 5-10
cm.
– Reduce the thickness of this hinge without
pulling out the bar, until the tree falls.
– In particular or unstable conditions, you can
complete felling by inserting wedges (2) on the
opposite side of the fall, and hitting them with
a hammer until the tree falls.
• Bucking (Fig. 11)
Be careful of where the
branches are lying on the ground, the risk of
them being under tension, the direction the
branch may go during cutting and the risk of
the tree being unstable after the branch has
been cut.
– Check the direction in which the branch is at-
tached to the tree
– First cut on the side where the branch bends
and then finish cutting on the opposite side.
• Sawing a log on the ground (Fig. 12)
Cut up to half the diameter, roll the log over and
finishing sawing on the other side.
!
WARNING!
• Sawing a raised log (Fig. 13)
– If you are sawing the overhanging end of a
supported log (A), first cut a third of the diameter from the bottom upwards, then finish
from the top.
– If you are sawing between two supports (B),
cut a third of the diameter from the top downwards, then finish from the bottom.
END OF OPERATIONS
When you have finished your work:
– Switch off the engine as indicated above
(Chap. 6).
– Wait for the chain to stop and then mount the
bar cover.
14 USING THE MACHINE
EN
MAINTENANCE AND STORAGE 15
EN
Correct maintenance is essential to maintain the
original efficiency and safety of the machine over
time.
During maintenance ope-
rations:
– Remove the spark plug cap.
– Wait until the engine is sufficiently cold.
– Use protective gloves when handling the
bar and chain.
– Keep the bar protection devices on, except
when intervening directly on the bar or the
chain.
– Never dispose of oils, fuel or other polluting
materials in unauthorised places.
CYLINDER AND SILENCER
To reduce fire risks, periodically clean the cylinder flaps with compressed air and clear the silencer area to get rid of sawdust, branches, leaves or other debris.
STARTING SYSTEM
To avoid overheating and damage to the engine,
always keep the cooling air vents clean and free
of sawdust and debris.
The starter rope must be replaced as soon as it
shows signs of wear.
CHAIN BRAKE
Regularly check the efficiency of the chain brake
and the condition of the metal band around the
clutch bell.
Replace this band when the points in contact
with the clutch bell wear down to about half the
thickness of the two ends not subject to rubbing.
CHAIN SPROCKET (Fig. 14)
Regularly check the condition of the sprocket
and replace it when wear exceeds 0.5 mm.
Do not mount a new chain with a worn sprocket
or vice-versa.
CHAIN CATCHER
This is an important safety device that restrains
the chain if it breaks or degrooves.
!
WARNING!
Regularly check the condition of the chain catcher and replace it if it gets damaged.
NUTS AND SCREWS
Periodically check that all the nuts and screws
are securely tightened and the handgrips are
tightly fastened.
CLEANING THE AIR FILTER (Fig. 15)
Cleaning the air filter is essential to guarantee the efficiency and duration
of the machine. Do not work with a damaged filter or without a filter, as this could permanently
damage the engine.
It must be cleaned after every 8-10 working
hours.
Clean the filter as follows:
– Remove the cover (1) and filter element (2).
– Gently tap the filter element (2) to remove the
dirt and, if necessary, clean it with low pressure compressed air.
The filter element (2) must
never be washed and must be replaced if it is too
dirty or damaged.
– Fit the filter element (2) and the cover (1) back
on.
• Oiling port (Fig. 16)
Dismount the guide bar and check the oiling port
(1) for clogging.
• Fuel filter (Fig. 17)
– Using a wire hook, take out the filter (1) from
the filler port.
– Wash the filter with gasoline. Replace with
new one if clogged with dirt completely.
When returning the filter,
use a pinch not to be folded the suction pipe.
!
WARNING!
IMPORTANT
IMPORTANT
8. MAINTENANCE AND STORAGE
16 MAINTENANCE AND STORAGE
EN
• Oil filter (Fig. 18)
– With a wire hook, take out the oil filter (1) from
the feeding port.
– Wash the filter with gasoline.
When returning the filter,
use a pinch not to be folded the suction pipe.
CHECKING THE SPARK PLUG (Fig. 19)
Periodically remove and clean the spark plug using a metal brush to get rid of any deposits.
Check and reset the correct distance between
the electrodes.
Replace the spark plug and fasten it firmly using
the supplied wrench.
The spark plug must be replaced with one with
the same characteristics whenever the electrodes have burnt or the insulation has worn, and in
any case every 100 working hours.
TUNING THE CARBURETTOR
The carburettor is tuned by the manufacturer to
achieve maximum performance in all situations,
with a minimum emission of toxic gas in compliance with the regulations in force.
When performance is poor, first check that the
chain runs smoothly and the bar rails are not distorted, then contact your dealer to check the
carburetion and the engine.
• Tuning minimum speed
The chain must not move
when the engine is running idle. If the chain
moves when the engine is running idle, contact your dealer to correctly regulate the
engine.
SHARPENING THE CHAIN (Fig. 20)
To ensure that the chainsaw works safely and efficiently, it is essential
that the cutting components are well-sharpened.
!
WARNING!
!
WARNING!
!
WARNING!
Sharpening is necessary when:
• The sawdust looks like dust.
• Cutting becomes more difficult.
• The cut is not straight.
• Vibrations increase.
• Fuel consumption increases.
If the chain is not sufficiently sharpened, the kick-back’s risk increases.
A specialized centre will sharpen the chain using
the right tools to ensure minimum removal of
material and even sharpness on all the cutting
edges.
If you sharpen the chain yourself, use special
round-section files with the right diameter depending on the type of chain (see “Chain
Maintenance Table”). You need a certain amount
of skill and experience to avoid damaging the
cutting edges.
Sharpen the chain as follows (Fig. 20):
– Switch off the engine, release the chain brake
and secure the bar with the chain in a vice so
that the chain can run smoothly.
– Tighten the chain if it is loose.
– Mount the file in the guide and then insert it in
the tooth at a constant angle from the cutting
edge.
– Sharpen in a forward motion a few times and
repeat this on all the cutting edges facing the
same way (right or left).
– Turn the bar over in the vice and repeat on all
the other cutting edges.
– Check that the limiter tooth does not stick out
further than the inspection instrument and file
any projecting parts with a flat file, rounding
off the edge.
– After sharpening, remove all traces of filing
and dust and lubricate the chain in an oil bath.
Replace the chain whenever:
– The length of the cutting edges reduces to 5
mm or less;
– There is too much play between the links and
the rivets.
!
WARNING!
MAINTENANCE AND STORAGE 17
EN
BAR MAINTENANCE (Fig. 21)
To avoid asymmetrical wear on the bar, make
sure it is turned over periodically.
To keep the bar in perfect working order, proceed as follows:
– grease the bearings on the nose sprocket (if
present) with the syringe;
– clean the bar groove with the scraper;
– clean the lubrication holes;
– with a flat file, remove burr from the edges and
level off the guides.
Replace the bar whenever:
– the groove is not as deep as the height of the
drive links (which must never touch the bot-
tom);
– the inside of the guide is worn enough to ma-
ke the chain lean to one side.
EXTRAORDINARY MAINTENANCE
All maintenance operations not foreseen in this
manual must be performed exclusively by your
dealer. All and any operations performed in
unauthorised centres or by unqualified persons
will totally invalidate the warranty.
STORAGE
After every work stint, clean the machine
throughly to remove all dust and debris, and repair or replace any faulty parts.
The machine must be stored in a dry place away
from the elements and with the bar cover correctly fitted.
LONG PERIODS OF DISUSE
If you are not going to use
the machine for a period of more than 2-3
months, we recommend you do a few things before putting it away. This will make it easier when
you want to use the machine again and will also
prevent permanent damage to the engine.
• Storage
Before putting the machine away:
– Empty the fuel tank.
– Start the engine and run it idle until it comes to
a halt, so that it uses up all the fuel that is left
in the carburettor.
– Wait for the engine to cool down and remove
the spark plug.
– Pour a teaspoon of (new) 2-stroke engine oil
into the spark plug slot.
– Pull the starter rope several times to deliver oil
to the cylinder.
– Replace the spark plug with the piston in the
dead end upper position (visible from the
spark plug slot when the piston is at maximum
stroke).
• Restarting work
When you wish to start using the machine again:
– Remove the spark plug.
– Pull the starter rope a few times to eliminate
excess oil.
– Check the spark plug as described in chapter
“Checking the spark plug”.
– Prepare the machine as indicated in the para-
graph entitled “Preparing for work”.
IMPORTANT
Chain maintenance table
The specifications of the chain and the bar homologated for this machine are
shown in the “EC Conformity Statement” provided. Do not use other types of chains or bars for
safety reasons.
The table gives the sharpening data for different types of chains, but this does not mean you
can use different chains from the homologated one.
!
WARNING!
Chain pitch Limiter tooth level (a) File diameter (d)
inches inches mm inches mm
3/8 0,025 0,64 5/32 4,0
1/4 0,025 0,64 5/32 4,0
a
d
18 TROUBLESHOOTING / ACCESSORIES
EN
9. TROUBLESHOOTING
1) The engine will
not start or will not
keep running
2) The engine starts
but is lacking in
power
3) The engine runs
irregularly and lacks
in power when
revved
4) The engine gives
off an excessive
amount of smoke
– Incorrect starting procedure
– Dirty spark plug or incorrect distance
between the electrodes
– Air filter clogged
– Carburetion problems
– Air filter clogged
– Carburetion problems
– Dirty spark plug or incorrect distance
between the electrodes
– Carburetion problems
– Incorrect composition
of the fuel mixture
– Carburetion problems
– Follow the instructions
(see chapter 6)
– Check the spark plug
(see chapter 8)
– Clean and/or replace the filter
(see chapter 8)
– Contact your dealer
– Clean and/or replace the filter
(see chapter 8)
– Contact your dealer
– Check the spark plug
(see chapter 8)
– Contact your dealer
– Prepare the fuel mixture according
to the instructions (see chap. 5)
– Contact your dealer
PROBLEM LIKELY CAUSE SOLUTION
The table contains a list of all possible combinations between bar and chain, indicating those
which may be used on each machine, marked
with the symbol “ ”.
In consideration that the
!
WARNING!
Bar and chain combinations
BAR Model
Pitch Groove CHAIN
Length width
Inches Inches / cm Inches / mm Code Code CJ 300 CJ 300 C
3/8” Mini 12 / 30 0,050 / 1,3 23900362/0 23920362/0
3/8” Mini 10 / 25 0,050 / 1,3 23900360/0 23920360/0
1/4” Mini 10 / 25 carving 0,050 / 1,3 23900361/0 23920361/0
selection, application and usage of bar and
chain are actions made solely by the user, the
latter assumes responsibility for damages of
any kind due to such actions. When in doubt
or if lacking knowledge of the specificity of
each bar or chain, contact your retailer or
specialised gardening centre.
10. ACCESSORIES
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