GGP CJ 300 Manual - User Manual

Full Text Searchable PDF User Manual

INTRODUCTION

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 effi-
ciently. Don’t forget that it is an integral part of the machine, so keep it handy so that it can be con-
sulted 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, main-
tenance and repair is considered "improper use" which will invalidate the warranty, relieve the manu-
facturer 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 essen-
tial safety and function characteristics will remain unaltered. In case of any doubts, please contact your
dealer. And now enjoy your work!

CONTENTS

Identification of the main components ...................................... 2

Symbols ..................................................................................... 3

Safety requirements .................................................................. 4

Machine assembly ..................................................................... 8

Preparing to work ...................................................................... 9

How to start - Use - Stop the engine ...................................... 10

Using the machine ................................................................... 12

Maintenance and storage ........................................................ 15

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!

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

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

10.2

10.7

10.3

10.6

10.4

10.5

10.8

10.9

Maximum noise and vibration levels

For model .........................................................................

CJ 300

Operator ear noise pressure level
(ISO 22868)..................................................................... db(A)

- 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

12,1

- Measurement uncertainty (2006/42/EC - EN 12096) ... m/s

1,5

SYMBOLS

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)

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 ma-
chine. 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 re-
sponsible 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 spa-
ce 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:

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 sa-
wing. If you use the right machine, you will redu-
ce 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 fo-
reign objects or flying debris caused by the mo-
vement 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 faste-
ned to be sure the equipment is in safe working
condition. Routine maintenance is essential
for safety and for maintaining a high perfor-
mance 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, ex-
haust 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 expe-
rience 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 e-
quipment and compromise safety.
9) Before putting the machine away, check you
have removed wrenches or tools used for main-
tenance.
10) Store the machine out of the reach of chil-
dren!

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 ma-
chine, 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 parti-
cularly significant information and are marked
with various levels of highlighting with the follo-
wing meaning:

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 re-

sult in the risk of injury to oneself or others.

Non-observance will re-

sult in the risk of serious injury or death to
oneself or others.

DANGER!

WARNING!

IMPORTANT

NOTE

SAFETY REQUIREMENTS

3.1 WORKING WITH TREE SERVICE CHAIN-

SAWS FROM A ROPE AND HARNESS

This chapter sets out working practices to redu-
ce 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 trai-
ning 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 appro-
priate 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, kara-
biners and other equipment for maintaining se-
cure and safe working positions for both them-
selves 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 atta-
ching 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 recom-
mended 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 mo-

re liable to contact climbing lines and opera-
tors body (particularly the left hand and arm)

• losing control from insecure work position re-

sulting in contact with the saw (unexpected
movement during operation of the saw).

(A)

SAFETY REQUIREMENTS

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 se-
cure work position where they are operating the
saw at:

• hip level when cutting horizontal sections;
• solar plexus level when cutting vertical sec-

tions.

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 ta-
ke steps to remove or
counteract the increasing
lateral forces by, for ex-
ample, a re-direct of the
main line via a supple-
mentary 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 a-
way from the body while holding the pull star-
ter 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 suf-
ficient 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 posi-
tion enabling two-
handed use; and

• they need to sup-

port 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 cut-
ting, 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 complet-

ing the assembly should be done on a flat and
stable surface, with enough space for moving
the machine and its packaging, always mak-
ing 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!

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 mid-
dle of the bar (Fig. 3).

– Using a screwdriver, make the chain run along

the guides to check it moves smoothly without
resistance.

WARNING!

NOTE

MACHINE ASSEMBLY

4. MACHINE ASSEMBLY

PREPARING TO WORK

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 da-

mage 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 lo-

wer octane value than prescribed, there is a dan-
ger that the engine temperature may rise and an
engine problem such as piston seizing may con-
sequently 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 engi-
ne, and which are capable of guaranteeing a
high level of protection.

The use of these oils makes it possible to prepa-
re a 2.5% mixture, consisting in 1 part oil to 40
parts petrol.

IMPORTANT

• Preparation and preservation

of the fuel mixture

Petrol and the fuel mixture are highly inflam-
mable!
– 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 agita-

tion 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 identifia-
ble to avoid the mistake of using one in place of
the other.

Periodically clean the petrol

and fuel mixture containers to remove any even-
tual deposits.

IMPORTANT

DANGER!

5. PREPARING TO WORK

Petrol

Synthetic oil 2-stroke

liters

0,025

0,05

0,075

0,125

125

0,25

250

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. descri-
bed therein, it may not be covered by the war-
ranty.

REFUELLING

Never smoke whilst refu-

elling 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!

DANGER!

IMPORTANT

Immediately clean all tra-

ces 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 lubrica-

ting 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 lubri-
cation and reduces the duration of the chain and
bar.

It is always worth topping up the oil tank com-
pletely (using a funnel) every time you refuel.
Since the oil tank capacity is enough to guaran-
tee that the fuel runs out first, you will avoid the
risk of operating the machine without lubricant.

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 po-
sition.

When restarting immediate-

ly after stopping the engine, set the Choke knob
in the first-stage position (choke open and throt-
tle lever in the starting position).

NOTE

STARTING THE ENGINE

The engine must be start-

ed 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!

PREPARING TO WORK / HOW TO START - USE - STOP THE ENGINE

6. HOW TO START - USE - STOP THE ENGINE

HOW TO START - USE – STOP THE ENGINE

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 le-
ver 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 trig-
ger (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 pre-
vents the chain from moving when the engine is
running at minimum speed.

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 sec-
onds for the chain to stop.

WARNING!

IMPORTANT

WARNING!

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, pe-
trol, damaged parts or any elements which
have a strong impact on the environment.

Always wear suitable clo-

thing when using the machine. Your dealer
can provide you with all the information on
the most suitable accident-prevention devi-
ces to guarantee your safety.
Use the vibration-proof glove.
All the above mentioned precautions do not
guarantee that you will not sustain whitefin-
ger 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 ap-
pear, seek medical advice immediately.

It takes specific training to

use the machine for felling and delimbing.

Keep all parts of your bo-

dy 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 du-
ring cutting.

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 han-
dle 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 fre-
quently.

WARNING!

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 with-

out 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 po-
wer 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, prac-
tise 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 immedi-

ately if the chain stops during sawing. Bewa-
re of kickback, which can occur if the bar
contacts an obstacle.
Kickback occurs when the tip of the chain co-
mes in contact with an object or when the
wood contracts and jams the chain during sa-
wing.
This contact with the tip of the chain can cau-
se a rapid backward motion, pushing the gui-
de 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!

IMPORTANT

WARNING!

• Before proceeding to your job, read the

section “For Safe Operation”. It is recom-
mended 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 respec-
ted. 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 noth-

ing 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!

USING THE MACHINE

– 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 dia-
meter 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 down-
wards, 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.

USING THE MACHINE

MAINTENANCE AND STORAGE

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 cylin-
der flaps with compressed air and clear the si-
lencer area to get rid of sawdust, branches, lea-
ves 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 cat-
cher 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 es-

sential to guarantee the efficiency and duration
of the machine. Do not work with a damaged fil-
ter 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 pres-
sure 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

8. MAINTENANCE AND STORAGE

MAINTENANCE AND STORAGE

• 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 u-
sing 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 electro-
des 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 compli-
ance with the regulations in force.

When performance is poor, first check that the
chain runs smoothly and the bar rails are not dis-
torted, 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, con-
tact your dealer to correctly regulate the
engine.

SHARPENING THE CHAIN (Fig. 20)

To ensure that the chain-

saw works safely and efficiently, it is essential
that the cutting components are well-shar-
pened.

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 suffi-

ciently sharpened, the kick-back’s risk in-
creases.

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 de-
pending 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

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, proce-
ed 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 re-
pair or replace any faulty parts.
The machine must be stored in a dry place away
from the elements and with the bar cover cor-
rectly 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 be-
fore 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

3/8

0,025

0,64

5/32

4,0

1/4

0,025

0,64

5/32

4,0

TROUBLESHOOTING / ACCESSORIES

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 combina-
tions 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

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