GGP ITALY SPA Chain-saw Operator's Manual - User Manual

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Motosega - MANUALE DI ISTRUZIONI

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il presente libretto

Chain-saw - OPERATOR’S MANUAL

WARNING: read thoroughly the instruction booklet before using this
machine.

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1. For Safe Operation

Dear Customer,

Firstly, we wish to thank you for having chosen our products and hope that the use of this machine will
be extremely satisfying for you and fully meet your expectations. This manual has been drawn up to
allow your to get to know your machine well and use it in safe and efficient conditions; please do not
forget that it is an integral part of the machine and keep it to hand to be consulted at all times and con-
sign it with the machine if you should sell or lend it to others.

Your new machine has been designed and manufactured to current standards and is safe and reliable
if used in full respect of the instructions contained in this manual (forecast use); any other use or fail-
ure to comply with the instructions for safe use, maintenance and repair shall be considered as
“improper use”, cause the warranty to become null and void and relieve the Manufacturer from all
responsibility, with the user becoming responsible for charges for damages or personal or third party
injury.

If any slight differences are found between the description herein and the machine you own, please
bear in mind that due to continual product improvement, the information contained in this manual is
subject to modification without prior notice or obligatory updating, although the essential features for
the purposes of safety and operation remain unchanged. In the event of doubt, please contact your
dealer. Enjoy your work!

EXPLANATION OF SYMBOLS AND SAFETY
WARNINGS

Read operator's instruction
book before operating this
machine.

Use the chain saw with two
hands.

Read, understand and follow all
warnings.

Wear head, eye and ear protec-
tion.

Warning! Danger of kickback.

WARNING!!!

RISK OF DAMAGING HEARING

IN NORMAL CONDITIONS OF USE,

THIS MACHINE MAY INVOLVE A DAILY

LEVEL OF PERSONAL EXPOSURE TO

NOISE FOR THE OPERATOR EQUAL

TO OR GREATER THAN

85 dB(A)

For Safe Operation ...................................................................... 1

Explanation of Symbols on the Machine ................................... 4

Installing Guide Bar and Saw Chain .......................................... 5

Fuel and Chain Oil ...................................................................... 6

Operating the Engine .................................................................. 8

Sawing ....................................................................................... 11

Maintenance .............................................................................. 13

Maintenance of Saw Chain and Guide Bar .............................. 15

Troubleshooting Guide ............................................................. 16

Contents

1. For Safe Operation

Never operate a chain saw

when you are fatigued, ill, or
upset, or under the influence of
medication that may make you
drowsy, or if you are under the
influence of alcohol or drugs.

Use safety footwear, snug fit-

ting clothing and eye, hearing and
head protection devices.
Use the vibration-proof glove.

Keep the saw chain sharp and

the saw, including the AV system,
well maintained. A dull chain will
increase cutting time, and press-
ing a dull chain through wood will
increase the vibrations transmit-
ted to your hands. A saw with
loose components or with dam-
aged or worn AV buffers will also
tend to have higher vibration lev-
els.

All the above mentioned pre-

cautions do not guarantee that
you will not sustain whitefinger
diseaseor carpal tunnel syn-
drome.
Therefore, continual and regular
users should monitor closely the
condition of their hands and fin-
gers. If any of the above symp-
toms appear, seek medical advice
immediately.

Always use caution when han-

dling fuel. Wipe up all spills and
then move the chain saw at least 3
m from the fueling point before
starting the engine.

Eliminate all sources of sparks

or flame (i.e. smoking, open
flames, or work that can cause
sparks) in the areas where fuel is
mixed, poured, or stored.

Do not smoke while handling

fuel or while operating the chain
saw.

Do not allow other persons to

be near the chain saw when start-
ing or cutting. Keep bystanders
and animals out of the work area.
Children, pets and bystanders
should be a minimum of 10 m
away when you start or operate
the chain saw.

Never start cutting until you

have a clear work area, secure
footing, and a planned retreat
path from the falling tree.

10.

Always hold the chain saw

firmly with both hands when the
engine is running. Use a firm grip
with thumb and fingers encircling
the chain saw handles.

11.

Keep all parts of your body

away from the saw chain when the
engine is running.

12.

Before you start the engine,

make sure the saw chain is not
contacting anything.

13.

Always carry the chain saw

with the engine stopped, the
guide bar and saw chain to the
rear, and the muffler away from
your body.

14.

Always carry the chain saw

with the engine stopped, the
guide bar and saw chain to the
rear, and the muffler away from
your body.

15.

All chain saw service, other

than the items listed in the
Owner’s Manual, should be per-
formed by competent chain saw
service personnel. (E.g., if improp-
er tools are used to remove the
flywheel, or if an improper tool is
used to hold the flywheel in order
to remove the clutch, structural

1. For Safe Operation

damage to the flywheel could
occur which could subsequently
cause the flywheel to disinte-
grate.)

16.

Always shut off the engine

before setting it down.

17.

Use extreme caution when

cutting small size brush and
saplings because slender material
may catch the saw chain and be
whipped toward you or pull you
off balance.

18.

When cutting a limb that is

under tension, be alert for spring-
back so that you will not be struck
when the tension in the wood
fibers is released.

19.

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.

20.

Keep the handles dry, clean

and free of oil or fuel mixture.

21.

Operate the chain saw only in

well ventilated areas. Never start
or run the engine inside a closed
room or building. Exhaust fumes
contain dangerous carbon
monoxide.

22.

Do not operate the chain saw

in a tree unless specially trained to
do so.

23.

Guard against kickback.

Kickback is the upward motion of
the guide bar which occurs when
the saw chain at the nose of the
guide bar contacts an object.
Kickback can lead to dangerous
loss of control of the chain saw.

24.

When transporting your chain

saw, make sure the appropriate
guide bar scabbard is in place.

KICKBACK SAFETY PRECAUTIONS FOR
CHAIN SAW USERS

Kickback may occur when

the nose or tip of the guide bar touches an
object, or when the wood closes in and
pinches the saw chain in the cut. Tip contact
in some cases may cause a lightning fast

reverse reaction, kick-
ing the guide bar up
and back towards the
operator.
Pinching the saw
chain along the top of
the guide bar may
push the guide bar

rapidly back towards the operator. Either of
these reactions may cause you to lose control
of the saw, which could result in serious per-
sonal injury.

• Do not rely exclusively on the safety devices
built into your saw. As a chain saw user you
should take several steps to keep cutting
jobs free from accident or injury.

1. With a basic understanding of kickback you
can reduce or eliminate the element of surprise.
Sudden surprise contributes to accidents.

2. Keep a good grip on the saw
with both hands, the right hand on
the rear handle, and the left hand
on the front handle, when the
engine is running. Use a firm grip
with thumbs and fingers encircling
the chain saw handles. A firm grip
will help you reduce kickback and
maintain control of the saw.

3. Make certain that the area in
which you are cutting is free from
obstructions. Do not let the nose
of the guide bar contact a log,
branch, or any other obstruction
which could be hit while you are
operating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut above
shoulder height.

6. Follow the manufacturer’s
sharpening and maintenance
instructions for the saw chain.

7. Only use replacement bars and
chains specified by the manufac-
turer or the equivalent.

WARNING!

2. Explanation of Symbols on the Machine

For safe operation and

maintenance, symbols are carved in relief on
the machine.
According to these indications, please be
careful not to make any mistake.

The port to refuel “MIX GASO-
LINE”

Position:

Fuel cap

The port to top up chain oil

Position:

Oil cap

Setting the switch to the “I”
position, the engine starts.
Setting the switch to the “O”
position, the engine stops
immediately.

Position:

Front at the top of

the rear handle

Starting the engine. If you pull
out the choke knob (at the
back-right of the rear handle)
to the point of the arrow, you
can set the starting mode as
follows:
• First-stage position – start-

ing mode when the engine is
warm.

• Second-stage position –

starting mode when the
engine is cold.

Position:

Upper-right of the

aircleaner cover

WARNING!

The screw under the “H”
stamp is The High-speed
adjustment screw.

The screw under the “L” stamp
is The Slow-speed adjustment
screw.

The screw at the left of the “T”
stamp is the Idle adjustment
screw.

Position:

Left side of the rear

handle

Shows the directions that the
chain brake is released (white
arrow) and activated (black
arrow).

Position:

Front of the chain

cover

If you turn the rod by screw-
driver follow the arrow to the
"MAX" position, the chain oil
flow more, and if you turn to
the "MIN" position, less.

Position:

Bottom of the

power unit

2. Explanation of Symbols on the Machine

3. Installing Guide Bar and Saw Chain

A standard saw unit package contains the items
as illustrated.

Open the box and install the guide bar and the
saw chain on the power unit as follows:

The saw chain has very

sharp edges. Use thick protective gloves for
safety.

1. Pull the guard towards the front handle to

check that the chain brake is not engaged.

2. Loosen the nuts and remove the chain cover.

3. Gear the chain to the sprocket and, while fit-

ting the saw chain around the guide bar,
mount the guide bar to the power unit. Adjust
the position of chain tensioner nut.

WARNING!

Pay attention to the correct

direction of the saw chain.

4. Fit the chain cover to the power unit and fas-

ten the nuts to finger tightness.

5. While holding up the tip of the bar, adjust the

chain tension by turning the tensioner screw
until the tie straps just touch the bottom side
of the bar rail.

6. Tighten the nuts 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.

7. Tighten the tensioner screw.

A new chain will expand its

length in the beginning of use. Check and read-
just the tension frequently as a loose chain can
easily derail or cause rapid wear of itself and the
guide bar.

NOTE

3. Installing Guide Bar and Saw Chain

(1) Chain cover
(2) Chain Tensioner

nut

(1) Moving

direction

(1) Loosen
(2) Tighten
(3) Lift up
(4) Tensioner

screw

(1) Power unit
(2) Bar protector
(3) Guide bar
(4) Saw chain
(5) Plug wrench
(6) Screwdriver for carburetor adjustment

4. Fuel and Chain Oil

• FUEL

Gasoline is very flamma-

ble. Avoid smoking or bringing any flame or
sparks near fuel.

Make sure to stop the engine and allow it cool
before refueling the unit.

Select outdoor bare ground for fueling and
move at least 3 m (10 ft) away from the fuel-
ing point before starting the engine.

• The engines are lubricated by oil specially for-

mulated for air-cooled 2-cycle gasoline engine
use. Use an anti-oxidant added quality oil
expressly labeled for air-cooled 2-cycle engine
use (JASO FC GRADE OIL or ISO EGC
GRADE).

• Do not use BIA or TCW (2-stroke water-cool-

ing type) mixed oil.

• RECOMMENDED MIXING RATIO GASO-

LINE 50: OIL 1

• Exhaust emission are controlled by the funda-

mental engine parameters and components
(eq., carburation, ignition timing and port tim-
ing) without addition of any major hardware or
the introduction of an inert material during
combustion.

• These engines are certified to operate on

unleaded gasoline.

• Make sure to use gasoline with a minimum

octane number of 89RON (USA/Canada:
87AL).

• If you use a gasoline of a lower octane value

WARNING!

than prescribed, there is a danger that the
engine temperature may rise and an engine
problem such as piston seizing may conse-
quently occur.

• Unleaded gasoline is recommended to reduce

the contamination of the air for the sake of
your health and the environment.

• Poor quality gasolines or oils may damage

sealing rings, fuel lines or fuel tank of the
engine.

• HOW TO MIX FUEL

Pay attention to agitation.

1. Measure out the quantities of gasoline and oil

to be mixed.

2. Put some of the gasoline into a clean,

approved fuel container.

3. Pour in all of the oil and agitate well.

4. Pour in the rest of gasoline and agitate again

for at least one minute. As some oils may be
difficult to agitate depending on oil ingredi-
ents, sufficient agitation is necessary for the
engine to last long. Be careful that, if the agi-
tation is insufficient, there is an increased
danger of early piston seizing due to abnor-
mally lean mixture.

5. Put a clear indication on the outside of the

container to avoid mixing up with gasoline or
other containers.

6. Indicate the contents on outside of container

for easy identification.

• FUELING THE UNIT

1. Untwist and remove the fuel cap. Rest the

cap on a dustless place..

2. Put fuel into the fuel tank to 80% of the full

capacity.

3. Fasten the fuel cap securely and wipe up any

fuel spillage around the unit.

WARNING!

4. Fuel and Chain Oil

1. Select flat and bare ground for fueling.
2. Move at least 10 feet (3 meters) away from

the fueling point before starting the
engine.

3. Stop the engine before refueling the unit.

At that time, be sure to sufficiently agitate
the mixed gasoline in the container.

• FOR YOUR ENGINE LIFE, AVOID:

1. FUEL WITH NO OIL (RAW GASOLINE) – It will

cause severe damage to the internal engine
parts very quickly.

2. GASOHOL – It can cause deterioration of

rubber and/or plastic parts and disruption of
engine lubrication.

3. OIL FOR 4-CYCLE ENGINE USE – It can

cause spark plug fouling, exhaust port block-
ing, or piston ring sticking.

Mixed fuels which have been left unused
for a period of one month

or more may clog

the carburetor and result in the engine failing
to operate properly.

5. In the case of storing the product for a long

period of time, clean the fuel tank after ren-
dering it empty. Next, activate the engine and
empty the carburetor of the composite fuel.

6. In the case of scrapping the used mixed oil

container, scrap it only at an authorized
repository site.

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.

• CHAIN OIL

Use motor oil SAE #10W-30 all year round or
SAE 30 ~ #40 in summer and SAE #20 in winter.

Do not use wasted or regen-

erated oil that can cause damage to the oil
pump.

NOTE

WARNING!

5. Operating the Engine

It is very dangerous to run

a chainsaw that mounts broken parts or lacks
any parts. Before starting engine, make sure
that all the parts including bar and chain are
installed properly.

• STARTING THE ENGINE

1. Fill fuel and chain oil tanks respectively, and

tighten the caps securely.

2. Set the switch to “I” position.

3. While holding the throttle lever together with

the trigger safety, push in the side latch and
release the throttle lever to leave it at the
starting position.

WARNING!

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).

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.

4. While holding the saw unit securely on the

ground, pull the starter rope vigorously.

Do not start the engine

while the chain saw hangs in one hand. The
saw chain may touch your body. This in very
dangerous.

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.

6. Allow the engine to warm up with the throttle

lever pulled slightly.

Keep clear of the saw

chain as it will start rotating upon starting of
engine.

• CHECKING THE OIL SUPPLY

Make sure to set up the bar

and the chain when checking the oil supply.
If not, the rotating parts may be exposed. It is
very dangerous.

After starting the engine, run the chain at medi-
um speed and see if chain oil is scattered off as
shown in the figure.

WARNING!

NOTE

5. Operating the Engine

(1) Chain oil
(2) Fuel

(1) Switch

(2) Throttle lever
(3) Throttle interlock

(1) Choke knob:

(a) When the engine

is cool

(b) When the engine

is warm up

starts

5. Operating the Engine

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.

The oil tank should become

nearly empty by the time fuel is used up. Be sure
to refill the oil tank every time when refueling the
saw.

• ADJUSTING THE CARBURETOR

The carburetor has been adjusted at the factory.
Should your unit need readjustment due to the
changes in altitude or operating conditions,
please let your skillful dealer make the adjust-
ment.
A wrong adjustment may cause damage to your
unit.

If you have to make the adjustment yourself,
please follow the procedure below carefully.

Before adjusting the carburetor, make sure that
the provided air/fuel filters are clean and fresh
and the fuel properly mixed.

NOTE

When adjusting, take the following steps:

Be sure to adjust the carbu-

retor with the bar chain attached.

1. “H” and “L” needles are restricted within the

number of turn as shown below.

“H” needle: -1/4
“L” needle: -1/4

2. Start the engine and allow it to warm up in

low speed for a few minutes.

3. Turn the idle adjusting screw (T) counter-

clockwise so that the saw chain does not
turn. If the idling speed is too slow, turn the
screw clockwise.

4. Make a test cut and adjust the “H” needle for

best cutting power, not for maximum speed.

Over revolution of “H” needle

causes a lack of power or a poor acceleration. In
such a case please turn the “H” needle a little
counterclockwise.

• CHAIN BRAKE

This machine is equipped with an automatic
brake tostop saw chain rotation upon occur-
rence of kickback during saw cutting.

The brake is automatically operated by inertial
force, which acts on the weight fitted inside the
front guard.

This brake can also be operated manually with
the front guard turned down to the guide bar.

To release the brake, pull up the front guard
toward the front handle till a “click” sound is
heard.

Caution

Be sure to confirm brake operation during daily
inspection.

How to confirm:

1. Turn off the engine.

NOTE

(1) Front handle
(2) Released
(3) Braking
(4) Brake lever

(1) “L” needle
(2) “H” needle
(3) Idle adjusting

screw

(1) Chain oil

(1) Chain oil flow

adjusting shaft

(2) Rich
(3) Lean

5. Operating the Engine

2. Holding the chain saw horizontally, release

your hand from the front handle, hit the tip of
the guide bar to a stump or a piece of wood,
and confirm brake operation. Operating level
varies by bar size.

In case the brake is not effective, ask our dealer
for inspection and repairs.

If the engine keeps rotating at high speed with
the brake engaged, the clutch will overheat
causing trouble.

When the brake engages during operation,
immediately release the throttle lever to stop the
engine.

• CARBURETOR ANTI-FREEZE MECHANISM

Operating chain saws in temperatures of 0 – 5°C
at times of high humidity may result in ice form-
ing within the carburetor, and this in turn may
cause the output power of the engine to be
reduced or for the engine to fail to operate
smoothly.

This product has accordingly been designed
with a ventilation hatch on the right side of the
surface of the cylinder cover to allow warm air to
be supplied to the engine and to thereby prevent
icing from occurring.

Under normal circumstances the product should
be used in the normal operating mode, i.e., in the

mode which it is set at the time of shipment.
However when the possibility exists that icing
may occur, the unit should be set to operate in
the anti-freeze mode before use

Continuing to use the prod-

uct in the anti-freeze mode even when tempera-
tures have risen and returned to normal, may
result in the engine failing to start properly or in
the engine failing to operate at its normal speed,
and for this reason you should always be sure to
return the unit to the normal operating mode if
there is no danger of icing occurring.

HOW TO SWITCH BETWEEN OPERATING
MODES

1. Flip the engine switch to turn off the engine.
2. Remove the cover to the air filter, remove the

air filter, and then remove the choke knob from
the cylinder cover.

3. Loosen the screws holding the cylinder cover

in place (i.e., the three screws on the inside
and the one screw on the outside of the
cover), and then remove the cylinder cover.

4. Press with your finger down on the icing cap

located on the right-hand side of the cylinder
cover to remove the icing cap.

5. Adjust the icing cap so that the “snow” mark

faces upwards and then return it to its original
position in the cylinder cover.

6. Fix the cylinder cover back into its original

position, and then fix all other parts back into
their proper positions.

• STOPPING THE ENGINE

1. Release the throttle lever to allow the engine

to idle for a few minutes

2. Set the switch to the “O” (STOP) position.

NOTE

(1) Switch

(1) Cylinder cover
(2) “Sunshine” mark
(3) “Snow” mark

(a) Normal operating mode
(b) Anti-freeze mode

(1) Cylinder

cover

(2) Choke knob
(3) Icing cap

6. Sawing

• Before proceeding to

your job, read the sec-
tion “For Safe Oper-
ation”. It is recommend-
ed to first practice saw-
ing easy logs. This also
helps you get accus-
tomed 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 mate-
rials and the require-
ments of the safety reg-
ulations 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.

• GUARD AGAINST KICKBACK

WARNING!

•

This saw is equipped with
a chain brake that will
stop the chain in the
event of kickback if oper-
ating properly. You must
check the chain brake
operation before each
usage by running the saw
at full the throttle for 1-2
seconds and pushing the
front hand guard forward.
The chain should stop
immediately with the
engine at full speed. If the
chain is slow to stop or
does not stop, replace the
brake band and clutch
drum before use.

•

It is extremely important
that the chain brake be
checked for proper oper-
ation before each use and
that the chain be sharp in
order to maintain the kick-
back safety level of this
saw. Removal of the safe-
ty devices, inadequate
maintenance, or incorrect
replacement of the bar or
chain may increase the
risk to serious personal
injury due to kickback.

• FELLING A TREE

1. Decide the felling direction considering the

wind, lean of the tree, location of heavy
branches, ease of completing the task after
felling and other factors.

2. While clearing the area around the tree,

arrange a good foothold and retreat path.

(1) Notch cut
(2) Felling cut
(3) Felling direction

6. Sawing

3. Make a notch cut one-third of the way into

the tree on the felling side.

4. Make a felling cut from the opposite side of

the notch and at a level slightly higher than
the bottom of the notch.

When you fell a tree, be

sure to warn neighboring workers of the dan-
ger.

Bucking and Limbing

• Always ensure your foothold. Do not stand

on the log.

• Be alert to the rolling over of a cut log.

Especially when working on a slope, stand
on the uphill side of the log.

• Follow the instructions in “For Safe

Operation” to avoid kickback of the saw.

Before starting work, check the direction of
bending force inside the log to be cut. Always
finish cutting from the opposite side of the bend-
ing direction to prevent the guide bar from being
caught in the cut.

A log lying on the ground

Saw down halfway, then roll the log over and cut
from the opposite side.

A log hanging off the ground

In area “A”, saw up from the bottom one-third
and finish by sawing down from the top. In area
“B”, saw down from the top one-third and finish
by sawing up from the bottom.

WARNING!

Cutting the limbs of Fallen Tree

First check to which side the limb is bent. Then
make the initial cut from the bent side and finish
by sawing from the opposite side.

Be alert to the springing

back of a cut limb.

Pruning of Standing Tree

Cut up from the bottom, finish down from the
top.

• Do not work standing on unstable bases or

rung ladders.

• Do not overreach.
• Do not cut above shoulder height.
• Always use both your hands to hold the

saw.

WARNING!

7. Maintenance

Before cleaning, the

inspecting or repairing the unit, make sure
that engine has stopped and is cool.
Disconnect the spark plug to prevent acci-
dental starting.

• MAINTENANCE AFTER EACH USE

1. Air filter

Loosen the knob and remove the air cleaner
cover.

Take off the filter element and brush off attached
sawdust. When the filter is clogged with dust,
separate it in halves and shake-wash with gaso-
line.

When using compressed air, blow from the
inside.

To assemble the cleaner halves, press the rim
until it clicks.

When installing the main filter, make sure that the
grooves on the filter edge are correctly fit with
the projections on the cylinder cover.

2. Oiling port

Dismount the guide bar and check the oiling port
for clogging.

NOTE

WARNING!

3. Guide bar

When the guide bar is dismounted, remove saw-
dust in the bar groove and the oiling port.
Grease the nose sprocket from the feeding port
on the tip of the bar.

4. Others

Check for fuel leakage and loose fastenings and
damage to major parts, especially handle joints
and guide bar mounting.
If any defects are found, make sure to have them
repaired before operating the saw again.

• PERIODICAL SERVICE POINTS

1. Cylinder fins

Dust clogging between the cylinder fins will
cause overheating of the engine.

Periodically check and clean the cylinder fins
after removing the air cleaner and the cylinder
cover.

When installing the cylinder cover, make sure
that switch wires and grommets are positioned
correctly in place.

Be sure to block the air intake hole.

NOTE

7. Maintenance

(1) Oiling port
(2) Grease port
(3) Sprocket

(1) Oiling port

7. Maintenance

2. Fuel filter

1. Using a wire hook, take out the filter from the

filler port.

2. Disassemble the filter and wash with gaso-

line, or replace with a new one if needed.

• After removing the filter, use a pinch to hold

the end of the suction pipe.

• When assembling the filter, take care not to

allow filter fibers or dust inside the suction
pipe.

3. Spark plug

Clean the electrodes with a wire brush and reset
the gap to 0.65 mm as necessary.

4. Sprocket

Check for cracks and for excessive wear inter-
fering with the chain drive. If the wear is consid-
erable, replace it with new one. Never fit a new
chain on a worn sprocket, or a worn chain on a
new sprocket.

NOTE

5. Front and Rear dampers

Replace if adhered part is peeled or crack is
observed on the rubber part. Replace if the
inside of the rear damper metal has been beaten
by the stopper bolt and the clearance of the
metal increased.

(1) Fuel filter

8. Maintenance of Saw Chain and Guide Bar

1. Saw Chain

It is very important for

smooth and safe operation to always keep
the cutters sharp.

The cutters need to be sharpened when:

• Sawdust becomes powder-like.
• You need extra force to saw in.
• The cut path does not go straight.
• Vibration increases.
• Fuel consumption increases.

Cutter setting standards

Be sure to wear safety

gloves.

Before filing:

• Make sure the saw chain is held securely.
• Make sure the engine is stopped.
• Use a round file of proper size for the chain

(see “Chain maintenance table”).

Place the file on the cutter and push straight for-
ward.
Keep the file position as illustrated.

After each cutter has been filed, check the depth
gauge and file it to the proper level as illustrated.

Be sure to round off the

front edge to reduce the chance of kickback
or tie-strap breakage.

WARNING!

Make sure every cutter has the same length and
edge angles as illustrated.

2. Guide Bar

• Reverse the bar occasionally to prevent partial

wear.

• The bar rail should always be square.

Check for wear of the bar rail. Apply a ruler to the
bar and the outside of a cutter. If a gap is
observed between them, the rail is normal.
Otherwise, the bar rail is worn. Such a bar needs
to be corrected or replaced.

(1) Appropriate

gauge checker

(2) Depth gauge

standard

(3) Make the shoul-

der round: (see
“Chain mainte-
nance table”)

(A)

Cutter length

(30°) Filing angle
(85°) Side plate angle
(60°) Top plate cutting

angle

(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts

8. Maintenance of Saw Chain and Guide Bar

8. Maintenance of Saw Chain and Guide Bar / 9. Troubleshooting Guide

9. Troubleshooting Guide

PROBLEME

CAUSE

REMEDY

Starting failure

WARNING
Make sure the
icing prevention
system is not
working.

Lack of

power/Poor accel-
eration/Rough
idling

Oil does not

come out

– Check fuel for water or substandard

mixture.

– Check for engine flooding.

– Check spark ignition.

– Check fuel for water or substandard

mixture.

– Check air filter and fuel filter for

clogging.

– Check carburetor for inadequate

adjustment.

– Check oil for substandard quality.

– Check oil passage and ports for

clogging.

– Replace with proper fuel.

– Remove and dry the spark plug.

– Then pull the starter again with no

choke.

– Replace with a new plug.

– Replace with proper fuel.

– Clean.

– Readjust speed needles.

– Replace.

– Clean.

If the unit seems to need further serv-
ice, please consult with an authorized
service shop in your area.

3. Chain maintenance table

The characteristic data of the chain and bar homologated for this machine

are shown in the “EC Conformity Statement” that accompanies same machine. Do not use other
types of chain or bar for safety reasons.
The table gives the sharpening data for different types of chain, without this giving the possibil-
ity of using chains other than the homologated one.

WARNING!

Chain stroke

Limiter tooth level (a)

File diameter (d)

Inches

3/8 Mini

9,32

0,018

0,45

5/32

4,0

0,325

8,25

0,026

0,65

3/16

4,8

3/8

9,32

0,026

0,65

13/64

5,2

0,404

10,26

0,031

0,80

7/32

5,6

171501054/0

Realizzazione: EDIPROM / bergamo

GGP ITALY

SPA

Via del Lavoro, 6

I-31033 Castelfranco Veneto (TV) ITALY

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