Motosega - MANUALE DI ISTRUZIONIATTENZIONE: prima di utilizzare la macchina, leggere attentamenteil presente libretto.

Chain-saw - OPERATOR’S MANUALWARNING: read thoroughly the instruction booklet before using thismachine.

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Motorsäge - GEBRAUCHSANWEISUNGACHTUNG: vor Inbetriebnahme des Geräts die Gebrauchsanleitungaufmerksam lesen.

Motosierra - MANUAL DE INSTRUCCIONESCUIDADO: antes de utilizar esta máquina, lea atentaemente el manualde instrucciones.

Kettingzaag - GEBRUIKERSHANDLEIDINGLET OP: Voordat u de bosmaaier gaat gebruiken dient u eerst dezehandleiding aandachtig door te lezen.

Motosserra - MANUAL DE INSTRUÇÕESATENCAO! Antes de usar a moto-roçadeira, ler com atenção estemanual de instruções.

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Pilarka spalinowa - INSTRUKCJE OBSŁUGIUWAGA: Przed użyciem urządzenia przeczytaj uważnieniniejsząinstrukcję.

Motorna verižna žaga - PRIROČNIK ZA UPORABOPOZOR: Preden uporabite stroj, pažljivo preberite priročnik z navodili.

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1EN1. For Safe Operation

Dear Customer,

Firstly, we wish to thank you for having chosen our products and hope that the use of this machine willbe extremely satisfying for you and fully meet your expectations. This manual has been drawn up toallow your to get to know your machine well and use it in safe and efficient conditions; please do notforget 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 reliableif 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 allresponsibility, with the user becoming responsible for charges for damages or personal or third partyinjury.

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

EXPLANATION OF SYMBOLS AND SAFETYWARNINGS

Read operator's instructionbook before operating thismachine.

Use the chain saw with twohands.

Read, understand and follow allwarnings.

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 DAILYLEVEL OF PERSONAL EXPOSURE TONOISE FOR THE OPERATOR EQUAL

TO OR GREATER THAN 85 dB(A)

1. For Safe Operation ...................................................................... 12. Explanation of Symbols on the Machine ................................... 43. Installing Guide Bar and Saw Chain .......................................... 54. Fuel and Chain Oil ...................................................................... 65. Operating the Engine .................................................................. 86. Sawing ....................................................................................... 117. Maintenance .............................................................................. 138. Maintenance of Saw Chain and Guide Bar .............................. 159. Troubleshooting Guide ............................................................. 16

Contents

1. For Safe Operation

2 MM2 EN 1. For Safe Operation

1. Never operate a chain sawwhen you are fatigued, ill, orupset, or under the influence ofmedication that may make youdrowsy, or if you are under theinfluence of alcohol or drugs.

2. Use safety footwear, snug fit-ting clothing and eye, hearing andhead protection devices.Use the vibration-proof glove.

3. Keep the saw chain sharp andthe saw, including the AV system,well maintained. A dull chain willincrease cutting time, and press-ing a dull chain through wood willincrease the vibrations transmit-ted to your hands. A saw withloose components or with dam-aged or worn AV buffers will alsotend to have higher vibration lev-els.

4. All the above mentioned pre-cautions do not guarantee thatyou will not sustain whitefingerdiseaseor carpal tunnel syn-drome.Therefore, continual and regularusers should monitor closely thecondition of their hands and fin-gers. If any of the above symp-toms appear, seek medical adviceimmediately.

5. Always use caution when han-dling fuel. Wipe up all spills andthen move the chain saw at least 3m from the fueling point beforestarting the engine.

6. Eliminate all sources of sparksor flame (i.e. smoking, openflames, or work that can causesparks) in the areas where fuel ismixed, poured, or stored.

7. Do not smoke while handlingfuel or while operating the chainsaw.

8. Do not allow other persons tobe near the chain saw when start-ing or cutting. Keep bystandersand animals out of the work area.Children, pets and bystandersshould be a minimum of 10 maway when you start or operatethe chain saw.

9. Never start cutting until youhave a clear work area, securefooting, and a planned retreatpath from the falling tree.

10. Always hold the chain sawfirmly with both hands when theengine is running. Use a firm gripwith thumb and fingers encirclingthe chain saw handles.

11. Keep all parts of your bodyaway from the saw chain when theengine is running.

12. Before you start the engine,make sure the saw chain is notcontacting anything.

13. Always carry the chain sawwith the engine stopped, theguide bar and saw chain to therear, and the muffler away fromyour body.

14. Always carry the chain sawwith the engine stopped, theguide bar and saw chain to therear, and the muffler away fromyour body.

15. All chain saw service, otherthan the items listed in theOwner’s Manual, should be per-formed by competent chain sawservice personnel. (E.g., if improp-er tools are used to remove theflywheel, or if an improper tool isused to hold the flywheel in orderto remove the clutch, structural

1. For Safe Operation

3EN1. For Safe Operation

damage to the flywheel couldoccur which could subsequentlycause the flywheel to disinte-grate.)

16. Always shut off the enginebefore setting it down.

17. Use extreme caution whencutting small size brush andsaplings because slender materialmay catch the saw chain and bewhipped toward you or pull youoff balance.

18. When cutting a limb that isunder tension, be alert for spring-back so that you will not be struckwhen the tension in the woodfibers is released.

19. Never cut in high wind, badweather, when visibility is poor orin very high or low temperatures.Always check the tree for deadbranches which could fall duringthe felling operation.

20. Keep the handles dry, cleanand free of oil or fuel mixture.

21. Operate the chain saw only inwell ventilated areas. Never startor run the engine inside a closedroom or building. Exhaust fumescontain dangerous carbonmonoxide.

22. Do not operate the chain sawin a tree unless specially trained todo so.

23. Guard against kickback.Kickback is the upward motion ofthe guide bar which occurs whenthe saw chain at the nose of theguide bar contacts an object.Kickback can lead to dangerousloss of control of the chain saw.

24. When transporting your chainsaw, make sure the appropriateguide bar scabbard is in place.

KICKBACK SAFETY PRECAUTIONS FORCHAIN SAW USERS

Kickback may occur whenthe nose or tip of the guide bar touches anobject, or when the wood closes in andpinches the saw chain in the cut. Tip contactin some cases may cause a lightning fast

reverse reaction, kick-ing the guide bar upand back towards theoperator.Pinching the sawchain along the top ofthe guide bar maypush the guide bar

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

• Do not rely exclusively on the safety devicesbuilt into your saw. As a chain saw user youshould take several steps to keep cuttingjobs free from accident or injury.

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

2. Keep a good grip on the sawwith both hands, the right hand onthe rear handle, and the left handon the front handle, when theengine is running. Use a firm gripwith thumbs and fingers encirclingthe chain saw handles. A firm gripwill help you reduce kickback andmaintain control of the saw.

3. Make certain that the area inwhich you are cutting is free fromobstructions. Do not let the noseof the guide bar contact a log,branch, or any other obstructionwhich could be hit while you areoperating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut aboveshoulder height.

6. Follow the manufacturer’ssharpening and maintenanceinstructions for the saw chain.

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

�! WARNING!

4 MM4 EN 2. Explanation of Symbols on the Machine

For safe operation andmaintenance, symbols are carved in relief onthe machine.According to these indications, please becareful not to make any mistake.

The port to refuel “MIX GASO-LINE”Position: Fuel cap

The port to top up chain oilPosition: Oil cap

Setting the switch to the “I”position, the engine starts.Setting the switch to the “O”position, the engine stopsimmediately.Position: Front at the top ofthe rear handle

Starting the engine. If you pullout the choke knob (at theback-right of the rear handle)to the point of the arrow, youcan set the starting mode asfollows:• First-stage position – start-

ing mode when the engine iswarm.

• Second-stage position –starting mode when theengine is cold.

Position: Upper-right of theaircleaner cover

�! WARNING! The screw under the “H”stamp is The High-speedadjustment screw.

The screw under the “L” stampis The Slow-speed adjustmentscrew.

The screw at the left of the “T”stamp is the Idle adjustmentscrew.Position: Left side of the rearhandle

Shows the directions that thechain brake is released (whitearrow) and activated (blackarrow).Position: Front of the chaincover

If you turn the rod by screw-driver follow the arrow to the"MAX" position, the chain oilflow more, and if you turn tothe "MIN" position, less.Position: Bottom of thepower unit

2. Explanation of Symbols on the Machine

5EN3. Installing Guide Bar and Saw Chain

A standard saw unit package contains the itemsas illustrated.

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

The saw chain has verysharp edges. Use thick protective gloves forsafety.

1. Pull the guard towards the front handle tocheck 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. Adjustthe position of chain tensioner nut.

�! WARNING!

Pay attention to the correctdirection 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 thechain tension by turning the tensioner screwuntil the tie straps just touch the bottom sideof the bar rail.

6. Tighten the nuts securely with the bar tip heldup (12 ~ 15 Nm). Then check the chain forsmooth rotation and proper tension whilemoving it by hand. If necessary, readjust withthe chain cover loose.

7. Tighten the tensioner screw.

A new chain will expand itslength in the beginning of use. Check and read-just the tension frequently as a loose chain caneasily derail or cause rapid wear of itself and theguide bar.

NOTE

NOTE

3. Installing Guide Bar and Saw Chain

(1) Chain cover(2) Chain Tensioner

nut

(1) Movingdirection

(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

6 MM6 EN 4. Fuel and Chain Oil

• FUEL

Gasoline is very flamma-ble. Avoid smoking or bringing any flame orsparks near fuel.

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

Select outdoor bare ground for fueling andmove 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 engineuse. Use an anti-oxidant added quality oilexpressly labeled for air-cooled 2-cycle engineuse (JASO FC GRADE OIL or ISO EGCGRADE).

• 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 orthe introduction of an inert material duringcombustion.

• These engines are certified to operate onunleaded gasoline.

• Make sure to use gasoline with a minimumoctane number of 89RON (USA/Canada:87AL).

• If you use a gasoline of a lower octane value

�! WARNING!

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

• Unleaded gasoline is recommended to reducethe contamination of the air for the sake ofyour health and the environment.

• Poor quality gasolines or oils may damagesealing rings, fuel lines or fuel tank of theengine.

• HOW TO MIX FUEL

Pay attention to agitation.

1. Measure out the quantities of gasoline and oilto 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 againfor at least one minute. As some oils may bedifficult to agitate depending on oil ingredi-ents, sufficient agitation is necessary for theengine to last long. Be careful that, if the agi-tation is insufficient, there is an increaseddanger of early piston seizing due to abnor-mally lean mixture.

5. Put a clear indication on the outside of thecontainer to avoid mixing up with gasoline orother containers.

6. Indicate the contents on outside of containerfor easy identification.

• FUELING THE UNIT

1. Untwist and remove the fuel cap. Rest thecap on a dustless place..

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

3. Fasten the fuel cap securely and wipe up anyfuel spillage around the unit.

�! WARNING!

4. Fuel and Chain Oil

7EN4. 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 theengine.

3. Stop the engine before refueling the unit.At that time, be sure to sufficiently agitatethe mixed gasoline in the container.

• FOR YOUR ENGINE LIFE, AVOID:

1. FUEL WITH NO OIL (RAW GASOLINE) – It willcause severe damage to the internal engineparts very quickly.

2. GASOHOL – It can cause deterioration ofrubber and/or plastic parts and disruption ofengine lubrication.

3. OIL FOR 4-CYCLE ENGINE USE – It cancause spark plug fouling, exhaust port block-ing, or piston ring sticking.

4. Mixed fuels which have been left unusedfor a period of one month or more may clogthe carburetor and result in the engine failingto operate properly.

5. In the case of storing the product for a longperiod of time, clean the fuel tank after ren-dering it empty. Next, activate the engine andempty the carburetor of the composite fuel.

6. In the case of scrapping the used mixed oilcontainer, scrap it only at an authorizedrepository site.

Moreover, normal wear andchange in product with no functional influenceare not covered by the warranty. Also, be carefulthat, if the usage in the instruction manual is notobserved as to the mixed gasoline, etc.described therein, it may not be covered by thewarranty.

• CHAIN OIL

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

Do not use wasted or regen-erated oil that can cause damage to the oilpump.

NOTE

NOTE

�! WARNING!

8 MM8 EN 5. Operating the Engine

It is very dangerous to runa chainsaw that mounts broken parts or lacksany parts. Before starting engine, make surethat all the parts including bar and chain areinstalled properly.

• STARTING THE ENGINE

1. Fill fuel and chain oil tanks respectively, andtighten the caps securely.

2. Set the switch to “I” position.

3. While holding the throttle lever together withthe trigger safety, push in the side latch andrelease the throttle lever to leave it at thestarting position.

�! WARNING! When restarting immediatelyafter stopping the engine, set the Choke knob inthe first-stage position (choke open and throttlelever in the starting position).

Once the choke knob hasbeen pulled out, it will not return to the operatingposition even if you press down on it with yourfinger. When you wish to return the choke knobto the operating position, pull out the throttlelever instead.

4. While holding the saw unit securely on theground, pull the starter rope vigorously.

Do not start the enginewhile the chain saw hangs in one hand. Thesaw chain may touch your body. This in verydangerous.

5. When engine has ignited, first push in thechoke knob to the first-stage position andthen pull the starter again to start the engine.

6. Allow the engine to warm up with the throttlelever pulled slightly.

Keep clear of the sawchain as it will start rotating upon starting ofengine.

• CHECKING THE OIL SUPPLY

Make sure to set up the barand the chain when checking the oil supply.If not, the rotating parts may be exposed. It isvery dangerous.

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

�! WARNING!

�! WARNING!

�! WARNING!

NOTE

NOTE

5. Operating the Engine

(1) Chain oil(2) Fuel

(1) Switch

(2) Throttle lever(3) Throttle interlock

(1) Choke knob:

(a) When the engineis cool

(b) When the engineis warm up

(c) After the enginestarts

9EN5. Operating the Engine

The chain oil flow can be changed by inserting ascrewdriver in the hole on bottom of the clutchside. Adjust according to your work conditions.

The oil tank should becomenearly empty by the time fuel is used up. Be sureto refill the oil tank every time when refueling thesaw.

• ADJUSTING THE CARBURETOR

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

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

Before adjusting the carburetor, make sure thatthe provided air/fuel filters are clean and freshand 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 thenumber of turn as shown below.

“H” needle: -1/4“L” needle: -1/4

2. Start the engine and allow it to warm up inlow speed for a few minutes.

3. Turn the idle adjusting screw (T) counter-clockwise so that the saw chain does notturn. If the idling speed is too slow, turn thescrew clockwise.

4. Make a test cut and adjust the “H” needle forbest cutting power, not for maximum speed.

Over revolution of “H” needlecauses a lack of power or a poor acceleration. Insuch a case please turn the “H” needle a littlecounterclockwise.

• CHAIN BRAKE

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

The brake is automatically operated by inertialforce, which acts on the weight fitted inside thefront guard.

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

To release the brake, pull up the front guardtoward the front handle till a “click” sound isheard.

CautionBe sure to confirm brake operation during dailyinspection.

How to confirm:

1. Turn off the engine.

NOTE

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 flowadjusting shaft

(2) Rich(3) Lean

10 MM10 EN 5. Operating the Engine

2. Holding the chain saw horizontally, releaseyour hand from the front handle, hit the tip ofthe guide bar to a stump or a piece of wood,and confirm brake operation. Operating levelvaries by bar size.

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

If the engine keeps rotating at high speed withthe brake engaged, the clutch will overheatcausing trouble.

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

• CARBURETOR ANTI-FREEZE MECHANISM

Operating chain saws in temperatures of 0 – 5°Cat times of high humidity may result in ice form-ing within the carburetor, and this in turn maycause the output power of the engine to bereduced or for the engine to fail to operatesmoothly.

This product has accordingly been designedwith a ventilation hatch on the right side of thesurface of the cylinder cover to allow warm air tobe supplied to the engine and to thereby preventicing from occurring.

Under normal circumstances the product shouldbe 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 icingmay occur, the unit should be set to operate inthe 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, mayresult in the engine failing to start properly or inthe engine failing to operate at its normal speed,and for this reason you should always be sure toreturn the unit to the normal operating mode ifthere is no danger of icing occurring.

HOW TO SWITCH BETWEEN OPERATINGMODES

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 fromthe cylinder cover.

3. Loosen the screws holding the cylinder coverin place (i.e., the three screws on the insideand the one screw on the outside of thecover), and then remove the cylinder cover.

4. Press with your finger down on the icing caplocated on the right-hand side of the cylindercover to remove the icing cap.

5. Adjust the icing cap so that the “snow” markfaces upwards and then return it to its originalposition in the cylinder cover.

6. Fix the cylinder cover back into its originalposition, and then fix all other parts back intotheir proper positions.

• STOPPING THE ENGINE

1. Release the throttle lever to allow the engineto 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) Cylindercover

(2) Choke knob(3) Icing cap

11EN6. Sawing

• Before proceeding toyour job, read the sec-tion “For Safe Oper-ation”. It is recommend-ed to first practice saw-ing easy logs. This alsohelps you get accus-tomed to your unit.

• Always follow the safetyregulations. The chainsaw must only be usedfor cutting wood. It isforbidden to cut othertypes of material.Vibrations and kickbackvary with different mate-rials and the require-ments of the safety reg-ulations would not berespected. Do not usethe chain saw as a leverfor lifting, moving orsplitting objects. Do notlock it over fixed stands.It is forbidden to hitchtools or applications tothe PTO other thanthose specified by themanufacturer.

• It is not necessary to force the saw into thecut. Apply only light pressure while running theengine at full throttle.

• When the saw chain is caught in the cut, donot attempt to pull it out by force, but use awedge or a lever to open the way.

• GUARD AGAINST KICKBACK

�! WARNING!• This saw is equipped with

a chain brake that willstop the chain in theevent of kickback if oper-ating properly. You mustcheck the chain brakeoperation before eachusage by running the sawat full the throttle for 1-2seconds and pushing thefront hand guard forward.The chain should stopimmediately with theengine at full speed. If thechain is slow to stop ordoes not stop, replace thebrake band and clutchdrum before use.

• It is extremely importantthat the chain brake bechecked for proper oper-ation before each use andthat the chain be sharp inorder to maintain the kick-back safety level of thissaw. Removal of the safe-ty devices, inadequatemaintenance, or incorrectreplacement of the bar orchain may increase therisk to serious personalinjury due to kickback.

• FELLING A TREE

1. Decide the felling direction considering thewind, lean of the tree, location of heavybranches, ease of completing the task afterfelling 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

12 MM12 EN 6. Sawing

3. Make a notch cut one-third of the way intothe tree on the felling side.

4. Make a felling cut from the opposite side ofthe notch and at a level slightly higher thanthe bottom of the notch.

When you fell a tree, besure to warn neighboring workers of the dan-ger.

Bucking and Limbing

• Always ensure your foothold. Do not standon the log.

• Be alert to the rolling over of a cut log.Especially when working on a slope, standon the uphill side of the log.

• Follow the instructions in “For SafeOperation” to avoid kickback of the saw.

Before starting work, check the direction ofbending force inside the log to be cut. Alwaysfinish cutting from the opposite side of the bend-ing direction to prevent the guide bar from beingcaught in the cut.

A log lying on the ground

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

A log hanging off the ground

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

�! WARNING!

�! WARNING!

Cutting the limbs of Fallen Tree

First check to which side the limb is bent. Thenmake the initial cut from the bent side and finishby sawing from the opposite side.

Be alert to the springingback of a cut limb.

Pruning of Standing Tree

Cut up from the bottom, finish down from thetop.

• Do not work standing on unstable bases orrung ladders.

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

saw.

�! WARNING!

�! WARNING!

13EN7. Maintenance

Before cleaning, theinspecting or repairing the unit, make surethat 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 cleanercover.

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

When using compressed air, blow from theinside.

To assemble the cleaner halves, press the rimuntil it clicks.

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

2. Oiling port

Dismount the guide bar and check the oiling portfor 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 porton the tip of the bar.

4. Others

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

• PERIODICAL SERVICE POINTS

1. Cylinder fins

Dust clogging between the cylinder fins willcause overheating of the engine.

Periodically check and clean the cylinder finsafter removing the air cleaner and the cylindercover.

When installing the cylinder cover, make surethat switch wires and grommets are positionedcorrectly in place.

Be sure to block the air intake hole.NOTE

7. Maintenance

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

(1) Oiling port

14 MM14 EN 7. Maintenance

2. Fuel filter

1. Using a wire hook, take out the filter from thefiller 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 holdthe end of the suction pipe.

• When assembling the filter, take care not toallow filter fibers or dust inside the suctionpipe.

3. Spark plug

Clean the electrodes with a wire brush and resetthe 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 newchain on a worn sprocket, or a worn chain on anew sprocket.

NOTE

5. Front and Rear dampers

Replace if adhered part is peeled or crack isobserved on the rubber part. Replace if theinside of the rear damper metal has been beatenby the stopper bolt and the clearance of themetal increased.

(1) Fuel filter

15EN8. Maintenance of Saw Chain and Guide Bar

1. Saw Chain

It is very important forsmooth and safe operation to always keepthe 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 safetygloves.

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 depthgauge and file it to the proper level as illustrated.

Be sure to round off thefront edge to reduce the chance of kickbackor tie-strap breakage.

�! WARNING!

�! WARNING!

�! WARNING!

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

2. Guide Bar

• Reverse the bar occasionally to prevent partialwear.

• The bar rail should always be square.

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

(1) Appropriategauge checker

(2) Depth gaugestandard

(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

16 MM16 EN 8. Maintenance of Saw Chain and Guide Bar / 9. Troubleshooting Guide

9. Troubleshooting Guide

PROBLEME CAUSE REMEDY

1) Starting failure

WARNINGMake sure theicing preventionsystem is notworking.

2) Lack ofpower/Poor accel-eration/Roughidling

3) Oil does notcome out

– Check fuel for water or substandardmixture.

– Check for engine flooding.

– Check spark ignition.

– Check fuel for water or substandardmixture.

– Check air filter and fuel filter forclogging.

– Check carburetor for inadequateadjustment.

– Check oil for substandard quality.

– Check oil passage and ports forclogging.

– Replace with proper fuel.

– Remove and dry the spark plug.

– Then pull the starter again with nochoke.

– 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 authorizedservice shop in your area.

3. Chain maintenance table

The characteristic data of the chain and bar homologated for this machineare shown in the “EC Conformity Statement” that accompanies same machine. Do not use othertypes 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 mm Inches mm Inches mm

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

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GGP ITALY SPA

Via del Lavoro, 6

I-31033 Castelfranco Veneto (TV) ITALY