instruction manual - stihl

Instruction Manual

STIH)

Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury.

Warning! To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL PM 1 (3/8" Picco) or RM 2 (0,325") chain depending on sprocket or other available low kickback components.

STIHL 026

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��Kickback may occur when the noseor tip of the guide bar touches anobject, or when the wood closes inand pinches the saw chain in thecut. Tip contact in some cases maycause a lightning fast reverse reaction, kicking the guide bar upand back towards the operator.Pinching the saw chain along thetop of the guide bar may push theguide bar rapidly back towards theoperator. Either of these reactionsmay cause you to lose control of thesaw which could result in seriouspersonal injury.

Section 5.12 of ANSI B 175.1-1991sets certain performance and design criteria related to chainsawkickback. STIHL has developed acolor code system using green andyellow to help you select a power-head, bar and chain combinationthat complies with the kickbackrequirements of the ANSI Standard.See the sections entitled "SafetyPrecautions" and "Specifications"of this manual.

Do not rely exclusively upon the safety devices built into your saw.As a chainsaw user, you should

take several steps to keep your cutting jobs free from accident or injury.

1. With a basic understanding ofkickback, you can reduce or eli-minate the element of surprise.Sudden surprise contributes toaccidents.

2. Keep a good firm grip on the saw with both hands, the righthand on the rear handle, and the left hand on the fronthandle, when the engine is run-ning. Use a firm grip withthumbs and fingers encirclingthe chainsaw handles.A firm grip will help you reducekickback and maintain controlof the saw. Don’t let go.

3. Make sure the area in which youare cutting is free from obstruc-tions. Do not let the nose of theguide bar contact a log, branch,or any other obstruction whileyou are operating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut aboveshoulder height.

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

7. Only use replacement bars andchains specified by the manu-facturer or the equivalent.

8. Reduced kickback bars and lowkickback chains are designedto reduce the risk of kickback injury. Ask your STIHL dealerabout these devices.

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1. Do �� operate a chainsaw withone hand! Serious injury to theoperator, helpers, bystanders,or any combination of these persons may result from one-handed operation. A chainsawis intended to be used with twohands.

2. Do not operate a chainsaw whenyou are fatigued.

3. Use safety footwear; snug-fittingclothing; protective gloves; andeye, hearing, and head protect-ion devices.

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continued on the back inside cover

Main Parts of the Saw 2Definitions 3Safety Precautions 4The Operator 4The Saw 6The Use of the Saw 6Maintenance, Repair and Storing 23Mounting the Bar and Chain 25Tensioning the Saw Chain 26Checking chain tension 26Fuel Mix 27Fueling 27Chain lubricant 28Fill chain Oil Tank 28Chain Brake 29Information Before You Start 30Starting the Saw 31Checking Chain Lubrication 34Oil Quantity Control 34During Break- in Period 35During Operation 35After Finishing Work 35Spark Arresting Screen in Muffler 36Air Filter System 36Winter Operation 37

Electric Handle Heating* 38Take Care of Guide Bar 38Checking and ReplacingChain Sprocket 39Adjusting Carburetor 40Motor management 40Checking Spark Plug 41Replacing Starter Rope and Rewind Spring 42Maintaining and SharpeningSaw Chain 44Maintenance Chart 47Specifications 48Ordering Spare Parts 49Storing the Machine 49STIHL Incorporated Federal EmissionControl Warranty Statement 50

*(optional extra)

This Manual contains operating andsafety instructions for all STIHL 026series power saws.Pay special attention to the safetyprecautions outlined on pages 4 to 22.Allow only persons who understand thisManual to operate your chain saw.

To receive maximum performance andsatisfaction from your STIHL chain saw,it is important that you read and under-stand the maintenance and safetyprecautions before using your saw.Contact your STIHL dealer or theSTIHL distributor for your area if you donot understand any of the instructions inthis Manual.

��Because a chain saw is a high-speedwood-cutting tool, some special safetyprecautions must be observed as withany other power saw to reduce the risk ofpersonal injury. Careless or improper usemay cause serious or even fatal injury.

STIHL’s philosophy is to continuallyimprove all of its products. As a result,engineering changes and improvementsare made from time-to-time.If the operating characteristics or theappearance of your saw differ fromthose described in this Manual,please contact your STIHL dealer forinformations and assistance.

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2000 Andreas Stihl AG & Co., Waiblingen0458 133 3021. M8. E0. PM. Printed in USA

Printed on chlorine-free paper

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1 = Twist lock 2 = Spark plug boot 3 = Handle heating switch 4 = Chain sprocket cover 5 = Chain sprocket 6 = Chain brake 7 = Chain catcher 8 = Side chain tensioner 9 = Bumper spike10 = Guide bar11 = Oilomatic saw chain

12 = Oil filler cap13 = Muffler14 = Front hand guard15 = Front handle (handlebar)16 = Decompression valve17 = Starter grip18 = Fuel filler cap19 = Master Control lever20 = Throttle trigger21 = Throttle trigger interlock22 = Rear handle23 = Rear hand guard

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�� !"Lock for carburetor box cover.

�� #��"��$��Connects the spark plug with the ignition wire.

��%� &��'$��&��!�For switching the electric handleheating on and off

��(� ��#�!"��Covers the clutch and the sprocket.

��)� ��#�!"�The toothed wheel that drives thesaw chain.

�� "�A device to stop the rotation of thechain if activated in a kickbacksituation by the operator’s hand orby inertia.

��*� ��!��Helps to reduce the risk of operatorcontact by a chain when it breaksor comes off the bar.

��+� ��Permits precise adjustment of chaintension.

��,� ��-#��#�"��Toothed stop for holding saw steadyagainst wood.

� � .��'��Supports and guides the saw chain.

�� /�$-��!��A loop consisting of cutters,tie straps and drive links.

�� /�$�0�$$��#For closing the oil tank.

�%� ��$��Reduces engine exhaust noise anddirects the exhaust gases.

�(� 0��&��'�.��'Provides protection againstprojecting branches and helpsprevent left hand fromtouching the chain if it slips offthe handle bar.

�)� 0��&��'$�Handle bar for the left hand atfront of saw.

�� !-#��1�$��Makes starting easier

�*� ��.��#The grip of the starter, for startingthe engine.

�+� 0��$�0�$$��#For closing the fuel tank.

�,� ��$� ��Lever for choke control,starting throttle, run andstop switch position.

� � ��$��Controls the speed of the engine.

�� $��2��$!"Must be depressed before thethrottle trigger can be activated.

�� 3��&��'$�The support handle for the righthand, located at or toward therear of the saw.

�%� 3��&��'�.��'Gives added protection tooperator’s right hand.

.��'��4��The exposed end of the guide bar.(not illustrated, see chapter"Tensioning the Saw Chain".

�$�!�Couples engine to chain sprocketwhen engine is accelerated beyondidle speed.(not illustrated).

5��61��7��-The anti-vibration system includesa number of buffers designed toreduce the transmission of vibrationscreated by the engine andcutting attachment to theoperator’s hands. (not illustrated).

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The use of any chainsawmay be hazardous.The saw chain has manysharp cutters. If thecutters contact your flesh,

they will cut you, even if the chain is notmoving. At full throttle, the chain speedcan reach 45 mph (20 m/s). It is impor-tant that you read, fully understandand observe the following safety precau-tions and warnings. Read the Owner’sManual �� the safety instructionsperiodically.

Pay special attention to the section onreactive forces.

��Reactive forces, including kickback, canbe dangerous. Careless or improper useof any chainsaw may cause serious orfatal injury.

All safety precautions that are generallyobserved when working with an ax or ahand saw also apply to the operation ofchainsaws. However, because a chain-saw is a high-speed, fast-cutting powertool, special safety precautions must beobserved to reduce the risk of personalinjury.

Have your STIHL dealer show you howto operate your chainsaw. Observe allapplicable local safety regulations,standards and ordinances.

��Minors should never be allowed to use achainsaw. Bystanders, especiallychildren, and animals should not beallowed in the area where a chainsaw isin use. Never let the saw run unattended.Store it in a locked place away fromchildren and empty the fuel tank beforestoring for longer than a few days.

Do not lend or rent yourchainsaw without theOwner‘s Manual. Be surethat anyone using yoursaw reads and under-

stands the information contained in thismanual.

These safety precautions and warningsapply to the use of all STIHL chainsaws.Different models may have differentparts and controls. See the appropriatesection of your Owner’s Manual for adescription of the controls and functionof the parts of your model saw.

Safe use of a chainsaw involves

1. the operator2. the saw3. the use of the saw.

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You must be in good physical conditionand mental health and not under theinfluence of any substance (drugs,alcohol) which might impair vision,dexterity or judgment.

Do not operate a chainsaw when you arefatigued. Be alert – If you get tired whileoperating your chainsaw, take a break.Tiredness may result in loss of control.Working with any chainsaw can bestrenuous. If you have any condition thatmight be aggravated by strenuous work,check with your doctor before operatinga chainsaw.

��Prolonged use of chainsaws (or othermachines) exposing the operator tovibrations may produce whitefingerdisease (Raynaud’s phenomenon) orcarpal tunnel syndrome. These conditions

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reduce the hand’s ability to feel andregulate temperature, produce numb-ness and burning sensations and maycause nerve and circulation damage andtissue necrosis.

All factors which contribute to whitefingerdisease are not known, but cold weather,smoking and diseases or physical condi-tions that affect blood vessels and bloodtransport, as well as high vibration levelsand long periods of exposure to vibrationare mentioned as factors in the develop-ment of whitefinger disease. In order toreduce the risk of whitefinger diseaseand carpal tunnel syndrome, pleasenote the following:

– Many STIHL models are availablewith an anti-vibration (“AV”) systemdesigned to reduce the transmissionof vibrations created by the engineand cutting attachment to theoperator’s hands. An AV system isrecommended for those personsusing chainsaws on a regular orsustained basis.

– Wear gloves and keep your handswarm. Heated handles, which areavailable on most STIHL power-heads, are recommended for coldweather use.

– Keep the saw chain sharp and the saw, including the AV system, wellmaintained. A dull chain will in-crease cutting time, and pressing adull chain through wood will in-crease the vibrations transmitted toyour hands. A saw with loose com-ponents or with damaged or wornAV buffers will also tend to havehigher vibration levels.

– Maintain a firm grip at all times, butdo not squeeze the handles withconstant, excessive pressures.Take frequent breaks.

All the above mentioned precautions donot guarantee that you will not sustainwhitefinger disease or carpal tunnelsyndrome. Therefore, continual andregular users should monitor closely thecondition of their hands and fingers.If any of the above symptoms appear,seek medical advice immediately.

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��To reduce the risk of injury, the operatorshould wear proper protective apparel.

Clothing must be sturdyand snug-fitting, but allowcomplete freedom ofmovement. Avoid loose-fitting jackets, scarfs,

neckties, jewelry, flared or cuffed pants,unconfined long hair or anything thatcould become entangled with the saw orbrush. Wear overalls or jeans with areinforced cut retardant insert or cutretardant chaps.

Protect your hands withgloves when handlingsaw and saw chain.Heavyduty, nonslipgloves improve your gripand protect your hands.

Good footing is mostimportant in chainsawwork. Wear sturdy bootswith nonslip soles.Steel-toed safety bootsare recommended.

To reduce the risk of injury to your eyesnever operate a chainsaw unlesswearing goggles or properly fitted safetyglasses with adequate top and sideprotection complying with your nationalstandard.

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Wear an approved safetyhard hat to protect yourhead. Chainsaw noisemay damage yourhearing. Always wearsound barriers (ear plugs

or ear mufflers) to protect your hearing.Continual and regular users should havetheir hearing checked regularly.

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Parts of the chainsaw; for illustrationsand definitions of the parts see thechapter on “Main Parts of Saw”.

��Never modify a chainsaw in any way.Only attachments and parts supplied bySTIHL or expressly approved by STIHLfor use with the specific STIHL sawmodels are authorized. Although certainunauthorized attachments are useablewith the STIHL powerhead, their usemay, in fact, be extremely dangerous.

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��Always stop the engine before putting achainsaw down or carrying it. Carrying achainsaw with the engine running isextremely dangerous.

Accidental acceleration of the enginecan cause the chain to rotate. Duringoperation, the powerhead muffler andthe material around it reach extremelyhigh temperatures. Avoid touching thehot muffler, you could receive seriousburns.

#��$�When carrying your saw byhand, the engine must be stopped andthe saw must be in the proper position.

Grip the front handle and place themuffler away from the body.

The chain guard (scabbard) should beover the chain and the guide bar, whichshould point backwards. When carryingyour saw, the bar should be behind you.

#��%��$�When transporting in avehicle, keep chain and bar covered withthe chain guard. Properly secure yoursaw to prevent turnover, fuel spillageand damage to the saw.

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Take off the chain guard and inspect forsafety in operation. For assembly, followthe procedure described in the chapter“Mounting the Bar and Chain” of yourOwner’s Manual.

STIHL Oilomatic chain, guide bar andsprocket must match each other ingauge and pitch.

Before replacing any bar and chain,see the sections on “Specifications”,"Kickback" and the "ANSI B 175.1-1991chainsaw kickback standard" in this manual.

��Proper tension of the chain is extremelyimportant. In order to avoid impropersetting, the tensioning procedure mustbe followed as described in your manual.Always make sure the hexagonal nut(s)for the sprocket cover is (are) tightenedsecurely after tensioning the chain.Never start the saw with the sprocketcover loose. Check chain tension oncemore after having tightened the nut(s)

and thereafter at regular intervals (when-ever the saw is shut off). If the chainbecomes loose while cutting, shut off theengine and then tighten. Never try totighten the chain while the engine isrunning!

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Your STIHL chainsaw uses an oil-gaso-line mixture for fuel (see chapter “Fuel”of your Owner’s Manual).

��Gasoline is an extremely flammable fuel.If spilled or ignited by a spark or otherignition source, it can cause fire andserious burn injury or property damage.Use extreme caution when handlinggasoline or fuel mix.

Do not smoke or bringany fire or flame near thefuel or the chainsaw.Note that combustiblefuel vapors may be ventedfrom the fuel system.

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��Fuel your chainsaw in well-ventilatedareas, outdoors only. Always shut off theengine and allow it to cool before refue-ling. Gasoline vapor pressure may buildup inside the gas tank of a two cycleengine depending on the fuel used, theweather conditions, and the ventingsystem of the tank. In order to reducethe risk of burns or other personal injuryfrom escaping gas vapor and fumes,remove the fuel filler cap on the STIHLproduct carefully so as to allow anypressure build-up in the tank to releaseslowly. Never remove fuel filler cap whileengine is running.

Select bare ground for fueling and moveat least 10 feet (3 m) from fueling spotbefore starting the engine. Wipe off anyspilled fuel before starting your saw, andcheck for leakage.

��Check for fuel leakage while refuelingand during operation. If fuel or oil leakageis found, do not start or run the engineuntil leak is fixed and spilled fuel hasbeen wiped away. Take care not to getfuel on your clothing. If this happens,change your clothing immediately.

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��Unit vibrations can cause an improperlytightened fuel filler cap to loosen or comeoff and spill quantities of fuel. In order toreduce the risk of fuel spillage and fire,tighten fuel filler cap by hand with asmuch force as possible.

The screwdriver end ofthe STIHL combinationwrench or other similartool can be used as an aidin tightening slotted fuelfiller caps.

��The chain brake must be engaged whenstarting the saw.

��Your chainsaw is a one-person saw.Do not allow other persons to be nearthe running chainsaw. Start and operateyour saw without assistance. For specificstarting instructions, see the appropriatesection of the Owner’s Manual. Properstarting methods reduce the risk of injury.Do not drop start. This method is verydangerous because you may lose controlof the saw.

There are two recommended methodsfor starting your chainsaw.

With the ��)��*�the chainsaw isstarted on the ground. Make sure thechain brake is engaged (see “ChainBrake” chapter in your Owner’s Manual)and place the chainsaw on firm groundor other solid surface in an open area.Maintain good balance and securefooting.

Grip the front handlebar of the saw firmlywith your left hand and press down.For saws with a rear handle level withthe ground, put the toe of your right footinto the rear handle and press down.With your right hand pull out the startergrip slowly until you feel a definiteresistance and then give it a brisk,strong pull.

The ��recommended )��forstarting your chainsaw allows you to startthe saw without placing it on theground. Make sure the chain brake isengaged, grip the front handle of thechainsaw firmly with your left hand.Keep your arm on the front handle in alocked (straight) position. Hold the rearhandle of the saw tightly between yourlegs just above the knees. Maintain goodbalance and secure footing. Pull thestarting grip slowly with your right handuntil you feel a definite resistance and thengive it a brisk, strong pull.

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��Be sure that the guide bar and chain areclear of you and all other obstructionsand objects, including the ground. Whenthe engine is started, the engine speedwith the starting throttle lock engagedwill be fast enough for the clutch toengage the sprocket and, if the chain-brake is not activated, turn the chain. If the upper quadrant of the tip of the bartouches any object, it may cause kick-back to occur (see section on reactiveforces). To reduce this risk, always engage the chain brake before starting.Never attempt to start the chainsawwhen the guide bar is in a cut or kerf.

��When you pull the starter grip, do notwrap the starting rope around yourhands. Do not allow the grip to snapback, but guide the starter rope slowlyback to permit the rope to rewindproperly. Failure to follow this proceduremay result in injury to hand or fingersand may damage the starter mechanism.

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��To reduce the risk of personal injury fromloss of control or contact with therunning chain, do not use a saw withincorrect idle adjustment. At correct idlespeed, the chain should not rotate. Fordirections to adjust idle speed, see theappropriate section of your Owner’sManual. If you cannot set the correct idlespeed, have your STIHL dealer checkyour saw and make proper adjustmentsor repairs.

After adjusting a chain, start the saw, letthe engine run for a while, then switchengine off and recheck chain tension.Proper chain tension is very important atall times.

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Operate the chainsaw under goodvisibility and daylight conditions only.

��Your chainsaw producespoisonous exhaust fumesas soon as the combusti-ble engine is running.These gases (e.g. carbon

monoxide) may be colorless and odor-less.

To reduce the risk of serious or fatalinjury from breathing toxic fumes, neverrun the chainsaw indoors or in poorlyventilated locations. Ensure proper venti-lation when working in trenches or otherconfined areas.

��Use of this product (including sharpen-ing the saw chain) can generate dust,mists and fumes containing chemicalsknown to cause respiratory disease, can-cer, birth defects, or other reproductiveharm. If you are unfamiliar with the risksassociated with the particular dust, mistor fume at issue, consult your employer,governmental agencies such as OSHAand NIOSH and other sources on hazar-dous materials. California and someother authorities, for instance, have pub-lished lists of substances known to causecancer, reproductive toxicity, etc.

Control dust (such as sawdust), mists(such as oli mist from chain lubrication)and fumes at the source where possible.In this regard use good work practicesand follow the recommendations ofOSHA / NIOSH and occupational andtrade associations. When the inhalationof toxic dust, mists and fumes cannot be

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eliminated, the operator and any by-standers should always wear a respiratorapproved by NIOSH / MSHA for the typesubstance at issue.

��Breathing asbestos dust is dangerousand can cause severe or fatal injury, re-spiratory illness or cancer. The use anddisposal of asbestos containing productshave been strictly regulated by OSHAand the Environmental Protection Agen-cy. Do not cut or disturb asbestos, asbe-stos containing products (e.g. asbestoscontaining drywall or other constructionproducts), or products such as pipeswhich are wrapped or covered with asbe-stos insulation. If you have any reasonto believe that you might be cutting asbe-stos, immediately contact your employeror a local OSHA representative.

The muffler and other parts of the engine(e.g. fins of the cylinder, spark plug)become hot during operation and remainhot for a while after stopping the engine.To reduce risk of burns do not touch themuffler and other parts while they are

hot. Don’t work alone. Keep within callingdistance of others in case help is needed.

Your chainsaw is equipped with a chaincatcher. It is designed to reduce the riskof personal injury in the event of a thrownor broken chain. From time to time thecatcher may be damaged or removed.To reduce the risk of personal injury,do not operate a chainsaw with adamaged or missing catcher.

Inspect buffers periodically. Replacedamaged, broken or excessively wornbuffers immediately, since they mayresult in loss of control of the saw.

A “sponginess” in the feel of the saw,increased vibration or increased“bottoming” during normal operationmay indicate damage, breakage orexcessive wear. Buffers should alwaysbe replaced in sets. If you have anyquestions as to whether the buffersshould be replaced, consult your STIHLservicing dealer.

��Take extreme care in wet and freezingweather (rain, snow, ice). Put off thework when the weather is windy, stormyor rainfall is heavy.

��Avoid stumbling on obstacles such asstumps, roots or rocks and watch out forholes or ditches. Clear the area whereyou are working. Be extremely cautiouswhen working on slopes or unevenground. There is increased danger ofslipping on freshly debarked logs.

��To reduce the riskof serious or fatal injury to the opera-tor or bystanders, never use the sawwith one hand.

You cannot control reactive forces andyou may lose control of the saw, whichcan result in the skating or bouncing ofthe bar and chain along the limb or log.

Even for those compact saws designedfor use in confined spaces, one-handedoperation is dangerous because theoperator may lose control.

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��'��Grip: Always hold the saw firmly withboth hands when the engine is running.Place your left hand on front handle barand your right hand on rear handle andthrottle trigger. Left-handers shouldfollow these instructions too.

Wrap your fingers tightly around thehandles, keeping the handles cradledbetween your thumb and forefinger.With your hands in this position, you canbest oppose and absorb the push, pulland kickback forces of your saw withoutlosing control (see section on reactiveforces). Make sure your chainsawhandles and grip are in good conditionand free of moisture, pitch, oil or grease.

��Do not operate your chainsaw with thestarting throttle lock engaged. Cuttingwith the starting throttle lock engageddoes not permit the operator propercontrol of the saw or chain speed.

��Never touch a chain with your hand orany part of your body when the engine isrunning, even when the chain is notrotating. The chain continues to rotatefor a short period after the throttle triggeris released.

��Do not cut any material other than woodor wooden objects.Use your chainsaw for cutting only.It is not designed for prying or shovelingaway limbs, roots or other objects.When sawing, make sure that the sawchain does not touch any foreignmaterials such as rocks, fences, nailsand the like.

Such objects may be flung off, damagethe saw chain or cause the saw tokickback.

��In order to keep control of your saw,always maintain a firm foothold.

Never work on a ladder, or on any otherinsecure support. Never use the sawabove shoulder height.

��Never work in a tree unless you havereceived specific, professional trainingfor such work, are properly secured(such as tackle and harness system or alift bucket), have both hands free foroperating the chainsaw in a crampedenvironment and have taken properprecautions to avoid injury from fallinglimbs or branches.

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Position the chainsaw in such a way thatyour body is clear of the cutting attach-ment whenever the engine is running.Stand to the left of cut while bucking.

Don’t put pressure on the saw whenreaching the end of a cut. The pressuremay cause the bar and rotating chain topop out of the cut or kerf, go out ofcontrol and strike the operator or someother object. If the rotating chain strikessome other object, a reactive force maycause the moving chain to strike theoperator.

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��Reactives forces may occur any time thechain is rotating. Reactives forces canbe dangerous! In any chainsaw, the

powerful force used to cut wood can bereversed (and work against the opera-tor). If the rotating chain is suddenlystopped by contact with any solid objectlike a log or branch or is pinched, thereactive forces may occur instantly.These reactive forces may result in lossof control which may, in turn, causeserious or fatal injury. An understandingof the causes of these reactive forcesmay helpyou avoid loss of control.

The most common reactive forces are– kickback,– pushback,– pull-in.

2��-1��-$Kickback may occur whenthe moving saw chainnear the upper quadrant ofthe bar nose contacts asolid object or is pinched.

The reaction of the cutting force of thechain causes a rotational force on thechainsaw in the direction opposite to thechain movement. This may fling the barup and back in an uncontrolled arcmainly in the plane of the bar. Undersome cutting circumstances the barmoves towards the operator, who maysuffer severe or fatal injury.

Kickback may occur when the nose ofthe guide bar is pinched unexpectedly,unintentionally contacts solid material inthe wood or is incorrectly used to begina plunge or boring cut.

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It may also occur during limbing.The greater the force of the kickbackreaction, the more difficult it becomes forthe operator to control the saw. Manyfactors influence the occurrence andforce of the kickback reaction. Theseinclude chain speed, the speed at whichthe bar and chain contact the object, theangle of contact, the condition of thechain and other factors.

The type of bar and saw chain you useis an important factor in the occurrenceand force of the kickback reaction.Some STIHL bar and chain types aredesigned to reduce kickback forces.STIHL recommends the use of reducedkickback bars and low kickback chains.

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Section 5.12 of ANSI standard B 175.1–1991, sets certain performance anddesign criteria related to chainsawkickback.To comply with section 5.12 of ANSI B175.1-1991:

a) saws with a displacement of less than3.8 cubic inches

– must, in their original condition,meet a 45° computer derivedkickback angle when equipped withcertain cutting attachments.

– and must be equipped with at leasttwo devices to reduce the risk ofkickback injury, such as a chainbrake, low kickback chain, reducedkickback bar, etc.

b) saws with a displacement of 3.8 cubicinches and above

– must be equipped with at least onedevice designed to reduce the riskof kickback injury such as a chainbrake, low kickback chain, reducedkickback bar, etc.

The computer derived angles for sawsbelow 3.8 cubic inch displacement aremeasured by applying a computerprogram to test results from a kickbacktest machine.

��The computer derived angles of § 5.12 ofANSI B 175.1-1991 may bear no rela-tionship to actual kickback bar rotation

angles that may occur in real life cuttingsituations. Compliance with § 5.12 ofANSI B 175.1-1991 does not automatic-ally mean that in a real life kickback thebar and chain will rotate at most 45° .

��In order for powerheads below 3.8 cubicinch displacement to comply with thecomputed kickback angle requirementsof § 5.12 of ANSI B 175.1-1991 use onlythe following cutting attachments:

– bar and chain combinations listed ascomplying in the “Specifications”section of the Owner’s Manual or

– other replacement bar and chaincombinations marked in accordancewith the standard for use on thepowerhead or

– replacement chain designated“low kickback saw chain’’.

See the section on "Low kickback sawchain and reduced kickback bars"

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STIHL recommends the use of the STIHLQuickstop chain brake on your power-head with green labeled reduced kick-back bars and low kickback chains.

��To reduce the risk of injury, stop usingthe saw immediately if the chain brakedoes not function properly. Take the sawto your local STIHL Service Centre! Donot use the saw until the problem hasbeen rectified (see the section “ChainBrake”).

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STIHL has developed a chain stoppingsystem designed to reduce the risk ofinjury in certain kickback situations.It is called a Quickstop chain brake.The Quickstop is available as standardequipment on your STIHL chainsaw andis available for installation on most olderSTIHL saws. Ask your dealer to retrofityour older model saw with a chain brake.

When a kickback occurs, the guide barmay rotate around the front handle. If thecutting position is such that the operator’sleft hand is gripping the front handlebehind the hand guard, and if the lefthand rotates around the front handle andmakes a sufficiently forceful contact withthe front hand guard, which is the Quick-stop activating lever, this contact willactivate the Quickstop. The chain brakeon most new model STIHL chainsawscan also be activated by inertia. See thechapter entitled “Chain Brake” of yourOwner’s Manual.

��Never operate your chainsaw without afront hand guard. In a kickback situationthis guard helps protect your left hand orother parts of your body. In addition,removal of the hand guard on a sawequipped with a chain brake will deactivatethe chain brake.

��No Quickstop or other chain brakedevice prevents kickback. These devicesare designed to reduce the risk ofkickback injury, if activated, in certainkickback situations. In order for theQuickstop to reduce the risk of kickbackinjury, it must be properly maintainedand in good working order. See thechapter entitled “Chain Brake” and“Maintenance, Repair and Storing” ofyour Owner’s Manual. In addition, theremust be enough distance between thebar and the operator to ensure that theQuickstop has sufficient time to activateand stop the chain before potentialcontact with the operator.

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��An improperly maintained chain brakemay increase the time needed to stopthe chain after activation, or may notactivate at all.

��Never run the chainsaw above idlespeed for more than 3 seconds whenthe chain brake is engaged or the chainis pinched or otherwise caught in the cut.Clutch slippage can cause excessiveheat, leading to severe damage of themotor housing, clutch and oiler compo-nent and may interfere with the operationof the chain brake. If clutch slippage inexcess of 3 seconds has occured, allowthe motor housing to cool before pro-ceeding and check the operation of yourchain brake as described in the chapterentitled “Chain Brake”. Also make surethat the chain is not turning at idle speed(see above “Important Adjustments”).

:�"�-��-1��-��"��-��-1��-�1��;

STIHL offers a variety of bars andchains. STIHL reduced kickback barsand low kickback chains are designed to

reduce the risk of kickback injury. Otherchains are designed to obtain higher cut-ting efficiency or sharpening ease butmay result in higher kickback tendency.

STIHL has developed a color codesystem to help you identify the STIHLreduced kickback bars and low kick-back chains. Cutting attachments withgreen warning decals or green labels onthe packaging are designed to reducethe risk of kickback injury. The matchingof green decaled powerheads under 3.8cubic inch displacement with greenlabeled bars and green labeled chainsgives compliance with the computedkickback angle requirements of ANSI B175.1-1991 when the products are intheir original condition. Products withyellow decals or labels are for users withextraordinary cutting needs and experience and specialized training fordealing with kickback.

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Please ask your STlHL dealer to properlymatch your powerhead with the appro-priate bar/chain combinations to reducethe risk of kickback injury. Green labeledbars and chains are recommended for allpowerheads. See your “STIHL Bar andChain Information” leaflet for details.

��Use of other, non-listed bar/chain combi-nations may increase kickback forcesand increase the risk of kickback injury.New bar/chain combinations may bedeveloped after publication of this litera-ture, which will, in combination withcertain powerheads, comply with § 5.12of ANSI B 175.1-1991. Check with yourSTIHL dealer for such combinations.

��Reduced kickback bars and low kickbackchains do not prevent kickback, but theyare designed to reduce the risk of kick-back injury. They are available from yourSTIHL dealer.

��Even if your saw is equipped with aQuickstop, a reduced kickback barand/or low kickback chain, this does noteliminate the risk of injury by kickback.Therefore, always observe all safetyprecautions to avoid kickback situations.

/�

:�"�-��-1��-��

Some types of saw chain have speciallydesigned components to reduce theforce of nose contact kickback. STIHLhas developed low kickback chain foryour powerhead.

“Low kickback saw chain” is a chainwhich has met the kickback performancerequirements of § 5.12.2.4 ofANSI B 175.1-1991 (Safety Require-ments for Gasoline-Powered Chain-Saws) when tested on a selected repre-sentative sample of chainsaws below3.8 cubic inch displacement specified inANSI B 175.1-1991.

��There are potential powerhead and barcombinations with which low kickbacksaw chains can be used which have notbeen specifically certified to comply withthe 45° computer derived kickback angleof § 5.12 of ANSI B 175.1-1991.Some low kickback chains have notbeen tested with all powerhead and barcombinations.

��A dull or improperly sharpened chainmay reduce or negate the effects of thedesign features intended to reduce

kickback energy. Improper lowering orsharpening of the depth gauges orshaping of the cutters may increase thechance and the potential energy of akickback. Always cut with a properlysharpened chain.

��-��-1��-�1��

STIHL green labeled reduced kickbackbars are designed to reduce the risk ofkickback injury when used with STIHLgreen labeled low kickback chains.

��When used with other, more aggressivechains, these bars may be less effectivein reducing kickback, and may result inhigher kickback forces.

#�"�=��

��Do not mount a bow guide on anySTIHL chainsaw.Any chainsaw equipped with a bowguide is potentially very dangerous.The risk of kickback is increased with abow guide because of the increasedkickback contact area. Low kickbackchain will not significantly reduce the riskof kickback injury when used on a bowguide.

��%��-��-1��-

The best protection from personal injurythat may result from kickback is to avoidkickback situations:

1. Hold the chainsaw firmly with bothhands and maintain a secure grip.

2. Be aware of the location of the guidebar nose at all times.

3. Never let the nose of the guide barcontact any object. Do not cut limbswith the nose of the guide bar.Be especially careful when cuttingsmall, tough limbs, small size brushand saplings which may easily catchthe chain.

4 Don’t overreach. 5. Don’t cut above shoulder height. 6. Begin cutting and continue at full

throttle. 7. Cut only one log at a time. 8. Use extreme caution when reentering

a previous cut. 9. Do not attempt to plunge cut if you

are not experienced with thesecutting techniques.

10. Be alert for shifting of the log or other forces that may cause the cut toclose and pinch the chain.

11. Maintain saw chain properly. Cut witha correctly sharpened, properlytensioned chain at all times.

12. Stand to the side of the cutting pathof the chainsaw.

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Pull-in occurs when the chain on thebottom of the bar is suddenly stoppedwhen it is pinched, caught or encountersa foreign object in the wood. The reactionof the chain pulls the saw forward andmay cause the operator to lose control.

Pull-in frequently occurs when thebumper spike of the saw is not heldsecurely against the tree or limb andwhen the chain is not rotating at fullspeed before it contacts the wood.

��Use extreme caution when cutting smallsize brush and saplings which may easilycatch the chain and pull you off balance.

��%��6��1. Always start a cut with the chain

rotating at full speed and the bumperspike in contact with the wood.

2. Pull-in may also be prevented by using wedges to open the kerf or cut.

#�>��1��-$

Pushback occurs when the chain on thetop of the bar is suddenly stopped whenit is pinched, caught or encounters aforeign object in the wood. The reactionof the chain drives the saw straight backtoward the operator and may cause lossof saw control. Pushback frequentlyoccurs when the top of the bar is used forcutting.

��%��1��-

1. Be alert to forces or situations thatmay cause material to pinch the topof the chain.

2. Do not cut more than one log at a time.

3. Do not twist the saw whenwithdrawing the bar from a plungecut or underbuck cut because thechain can pinch.

��?��

!��

Felling is cutting down a tree.

Before felling a tree, consider carefully allconditions which may affect the directionof fall, including:

The intended direction of the fall.

The natural lean of the tree.

Any unusually heavy limb structure.

Surrounding trees and obstacles.

The wind direction and speed.

��Always observe the general condition ofthe tree. Inexperienced users shouldnever attempt to cut trees which aredecayed or rotted inside or which areleaning or otherwise under tension.There is an increased risk that such treescould snap or split while being cut andcause serious or fatal injury to theoperator or bystanders. Also look forbroken or dead branches which couldvibrate loose and fall on the operator.When felling on a slope, the operatorshould stand on the uphill side ifpossible.

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When felling, maintain a distance of atleast 21/2 tree lengths from the nearestperson.

When felling in the vicinity of roads,railways and power lines, etc., take extraprecautions. Inform the police, utilitycompany or railway authority beforebeginning to cut.

��The noise of your engine may drown anywarning call.

��There are a number of factors that mayaffect and change the intended directionof fall, e.g. wind, lean of tree, slopingground, one-sided limb structure, woodstructure, decay, snow load, etc. To re-duce the risk of severe or fatal injury toyourself or others, look for these condi-tions prior to beginning the cut, and bealert for a change in direction during fall.

��

First clear the tree base and work areafrom interfering limbs and brush andclean its lower portion with an ax.

Then, establish two paths of escape (#)and remove all obstacles. These pathsshould be generally opposite to the plan-ned direction of the fall of the tree (�)and about at a 45° angle. Place alltools and equipment a safe distance awayfrom the tree, but not on the escape paths.

#��

If the tree has large buttress roots, cutinto the largest buttress vertically first(horizontally next) and remove theresulting piece.

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When making the felling notch, use thegunning sight on the shroud and housingto check the required direction of fall:

• Position the saw so that thegunning sight points exactly in thedirection you want the tree to fall.

��%��

��> felling notch - determines thedirection of the fall

For a conventional cut:

• Properly place felling notchperpendicular to the Iine of fall,close to the ground

• Cut down at app. 45-degree angleto a depth of about 1/5 to 1/4 of thetrunk diameter

• Make second cut horizontal• Remove resulting 45-degree piece

��6��?��

� = felling notch - determines thedirection of the fall

For an open-face cut:

• Properly place felling notchperpendicular to the Iine of falI,close to the ground

• Cut down at app. 50-degree angleto a depth of app.1/5 to 1/4 of thetrunk diameter

• Make second cut from below atapp. 40 degree angle

• Remove resulting 90-degree piece

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• For medium sized or larger treesmake cuts at both sides of the trunk,

• at same height as subsequentfelling cut.

• Cut to no more than width of guidebar.

This is especially important in softwood in summer - it helps preventsapwood splintering when the treefalls.

#�> !��Conventional and open-face technique:

• Begin 1 to 2 inches higher thancenter of felling notch

• Cut horizontalIy towards the fellingnotch

• Leave approx.1/10 of diameter uncut.This is the hinge

• Do not cut through the hinge –you could lose control of thedirection of the fall

Drive wedges into the felling cut wherenecessary to control the fall.

��If the tip of the bar contacts a wedge,it may cause kickback. Wedges shouldbe of wood or plastic – never steel,which can damage the chain.

��>��• Helps control the falling tree

• Do not cut through the hinge -you could lose control of thedirection of the fall

��In order to reduce the risk of personalinjury, never stand directly behind thetree when it is about to fall, since part ofthe trunk may split and come backtowards the operator (barber-chairing),or the tree may jump backwards off thestump. Always keep to the side of thefalling tree. When the tree starts to fall,withdraw the bar, shut off the engine andwalk away on the preplanned escapepath. Watch out for falling limbs.

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��Be extremely careful with partially fallentrees which are poorly supported.When the tree hangs or for some otherreason does not fall completely, set thesaw aside and pull the tree down with acable winch, block and tackle or tractor.If you try to cut it down with your saw,you may be injured.

!��)��)��$��)��

Engage the bumper spikes of the chain-saw directly behind the location of theintended hinge and pivot the saw aroundthis point only as far as the hinge. Thebumper spike rolls against the trunk.

!��)��$

��Felling a tree that has a diameter greaterthan the length of the guide bar requiresuse of either the sectioning felling cut orplunge-cut method. These methods areextremely dangerous because theyinvolve the use of the nose of the guidebar and can result in kickback. Onlyproperly trained professionals shouldattempt these techniques.

��)��For the sectioning method make the firstpart of the felling cut with the guide barfanning in toward the hinge. Then, usingthe bumper spike as a pivot, repositionthe saw for the next cut.

Avoid repositioning the saw more thannecessary. When repositioning for thenext cut, keep the guide bar fully engagedin the kerf to keep the felling cut straight.If the saw begins to pinch, insert awedge to open the cut. On the last cut,do not cut the hinge.

��6��)��

Timber having a diameter more thantwice the length of the guide bar requiresthe use of the plunge-cut method beforemaking the felling cut.

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First, cut a large, wide felling notch.Make a plunge cut in the center of thenotch.

The plunge cut is made with the guidebar nose. Begin the plunge cut byapplying the lower portion of the guidebar nose to the tree at an angle. Cut untilthe depth of the kerf is about the same asthe width of the guide bar. Next, alignthe saw in the direction in which therecess is to be cut.

With the saw at full throttle, insert theguide bar in the trunk.

Enlarge the plunge cut as shown inillustration.

��There is an extreme danger of kickbackat this point. Extra caution must be takento maintain control of the saw. To makethe felling cut, follow the sectioningmethod described previously.

If you are inexperienced with a chainsaw,plunge-cutting should not be attempted.Seek the help of a professional.

:�)1��Limbing is removing the branches froma fallen tree.

��There is an extreme danger of kickbackduring the limbing operation. Do notwork with the nose of the bar. Be extremelycautious and avoid contacting the log orother limbs with the nose of the guide bar.

Do not stand on a log while limbing it –you may slip or the log may roll.

Start limbing by leaving the lower limbs tosupport the log off the ground. Whenunderbucking freely hanging limbs,a pinch may result or the limb may fall,causing loss of control. If a pinch occurs,stop the engine and remove the saw,by lifting the limb.

��Be extremely cautious when cuttinglimbs or logs under tension (spring poles).The limbs or logs could spring backtoward the operator and cause loss ofcontrol of the saw and severe or fatalinjury to the operator.

#��-��Bucking is cutting a log into sections.

��1. When bucking, do not stand on the

log. Make sure the log will not rolldownhill. If on a slope, stand on theuphill side of the log.Watch out for rolling logs.

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2. Cut only one log at a time.

3. Shattered wood should be cut verycarefully. Sharp slivers of woodmay be caught and flung in thedirection of the operator of the saw.

4. When cutting small logs, place logthrough “V” - shaped supports ontop of a sawhorse. Never permitanother person to hold the log.Never hold the log with your leg orfoot.

5. Logs under strain: Risk of pinching!Always start relieving cut (/) atcompression side (�).Then make bucking cut (3) attension side (#).If the saw pinches, stop the engineand remove it from the log.

6. Only properly trained professionalsshould work in an area where thelogs, limbs and roots are tangled.Working in blowdown areas isextremely hazardous.

7. Drag the logs into a clear area beforecutting. Pull out exposed and clearedlogs first.

@�'4�4�4��*��'��48�� '4=

Never operate a chainsaw that isdamaged, improperly adjusted or notcompletely or securely assembled.Follow the maintenance and repairinstructions in the appropriate section ofyour Owner’s Manual, especially thosein the chapters “Mounting the Bar andChain”, “Maintaining and Sharpening”and “Chain Brake”.

��Use only STIHL replacement parts formaintenance and repair. Use of partsmanufactured by others may causeserious or fatal injury.

��Always stop the engine and ensure thatthe chain is stopped before making anyadjustments, maintenance or repair work,

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changing the saw chain or cleaning thesaw. Do not attempt any maintenance orrepair work not described in yourOwner’s Manual. Have such work perfor-med at your STIHL service shop only.

��Never test the ignition system withignition wire terminal removed from sparkplug or with unseated spark plug, sinceuncontained sparking may cause a fire.

��To reduce the risk of fire and burn injury,use only spark plugs authorized bySTIHL. Always press spark plug bootsnugly onto spark plug terminal of theproper size. (Note: If terminal hasdetachable SAE adapter nut, it must beattached.) A loose connection betweenspark plug terminal and ignition wireconnector in the boot may create arcingthat could ignite combustible fumes andcause a fire. Keep spark plug clean, andmake sure ignition lead is in goodcondition.

��Do not operate your chainsaw if themuffler is damaged, missing or modified.An improperly maintained muffler willincrease the risk of fire and hearing loss.Never touch a hot muffler or burn will

result. If your muffler was equipped witha spark-arresting screen to reduce therisk of fire (e. g. in the USA, Canada andAustralia), never operate your saw if thescreen is missing or damaged. Remem-ber that the risk of forest fires is greaterin hot or dry weather.Keep the chain, bar and sprocket clean;replace worn sprockets or chains.Keep the chain sharp.You can spot a dull chain when easy-to-cut wood becomes hard to cut and burnmarks appear on the wood.Keep the chain at proper tension. Tightenall nuts, bolts and screws except thecarburetor adjustment screws after eachuse.

��In order for the chain brake on yourSTIHL chainsaw to properly perform itsfunction of reducing the risk of kickbackand other injuries, it must be properlymaintained. Like an automobile brake,a chainsaw chain brake incurs weareach time it is engaged.

The amount of wear will vary dependingupon usage, conditions under which thesaw is used and other factors. Excessivewear will reduce the effectiveness of thechain brake and can render it inoperable.

For the proper and effective operation ofthe chain brake the brake band andclutch drum must be kept free of dirt,grease and other foreign matter whichmay reduce friction of the band on thedrum.

For these reasons, each STIHL chain-saw should be returned to trainedpersonnel such as your STIHL servicingdealer for periodic inspection andservicing of the brake system accordingto the following schedule:Heavy usage - every three months,Moderate usage - twice a year,Occasional usage - annually.

The chainsaw should also be returnedimmediately for maintenance wheneverthe brake system cannot be thoroughlycleaned or there is a change in its operating characteristics.

Additionally, the daily maintenanceschedule for your chainsaw set forth inyour STIHL Owner’s Manual should bestrictly followed.

Store chainsaw in a dry place and awayfrom children. Before storing for longerthan a few days, always empty the fueltank (see chapter "Storing the Machine"in this manual).

For any maintenance please refer to themaintenance chart ��"��)�� near the end of this manual.

3�

You can run chains of different pitcheson this chainsaw - depending on thechain sprocket (see "Specifications")

The chain pitch must match the guidebar. The drive link gauge must matchthe guide bar groove width.

• Unscrew nuts and take off cover

• Turn tensioning screw ��counterclockwise until the peg ofthe tensioner slide ��butts againstleft end of housing slot.

�� • Pull hand guard �� toward the front

handle.

• Wear work gloves to protect hands• Fit the chain - start at the bar nose.

• Fit the guide bar over the studs �� -• cutting edges on top of bar must

point to right -

• and engage the peg of the tensioner slide in locating hole ��-

• place the chain over sprocket ��atthe same time -

��

1

2

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Now turn tensioning screw ��clockwise until there is very littlechain sag on the underside of thebar -and the drive link tangs are locatedin the bar groove.

• Refit the sprocket cover -and screw on the nutsonly finger-tight.

• Tensioning the chain -see section "Tensioning the Saw Chain"

Retensioning during cutting work:

• Shut down the engine -and then slacken the nuts.

• Hold the bar nose up -and use screwdriver to turntensioning screw ��clockwise untilchain fits snugly againstthe underside of the bar -while still holding bar nose up,tighten down the nuts ��!"#$

A new chain has to be retensionedmore often than one that has been inuse for some time -

• check chain tension frequently -see section "During Operation".

• Shut down the engine.

• Wear work gloves to prevent injuries.

Chain must fit snugly against theunderside of the bar - and, with thechain brake disengaged, it must still bepossible to pull the chain along the barby hand.

• If necessary, retension the chain.

A new chain has to be retensionedmore often than one that has been inuse for some time -

Check chain tension frequently -see section "During Operation".

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This engine is certified to operate onunleaded gasoline and oil with themix ratio 50:1.

Your two-stroke engine requires amixture of brand-name gasoline andquality two-stroke engine oil with the�"�� %�$

Use regular branded unleaded gasolinewith a minimum octane rating of90 ROZ (U.S.A./Canada: pump octanemin. 89!). If the octane number of theregular grade gasoline in your area islower, use premium unleaded fuel.Fuel with a lower octane rating mayresult in preignition (causing “pinging”)which is accompanied by an increase inengine temperature. This, in turn,increases the risk of piston seizureand damage to the engine.

The chemical composition of the fuel isalso important. Some fuel additives notonly detrimentally affect elastomers(carburetor diaphragms, oil seals, fuellines etc.), but magnesium castings aswell. This could cause running problemsor even damage the engine. For thisreason it is essential that you use onlybranded fuels!

Use only STIHL two-stroke engine oil orequivalent branded two-stroke air-cooled engine oils with the classificationTC for mixing.

We recommend STIHL 50:1 two-strokeengine oil since it is specially formulatedfor use in STIHL engines.Do not use BIA or TCW (two-strokewater cooled) mix oils!

Take care when handling gasoline.Avoid direct contact with the skin andavoid inhaling fuel vapour(see “Safety Precautions”).

The canister should be kept tightlyclosed in order to avoid any moisturegetting into the mixture.

The fuel tank and the canister in whichfuel mix is stored should be cleanedfrom time to time.

(�"�!�)��

Only mix sufficient fuel for a few dayswork, not to exceed 3 months of storage.Store in approved safety fuel-canistersonly. When mixing, pour oil into thecanister first, and then add gasoline.

Gaso- Oil (STIHL 50:1 orline equivalent branded TC oils)

US gal. US fl.oz

1 2.6 2 1/2 6.4 5 12.8

Dispose empty mixing-oil canisters onlyat authorized disposal locations.

Before fueling, clean the fuel filler capand the area around it to ensure that nodirt falls into the tank.Always thoroughly shake the mixture inthe canister before fueling your machine.

�*��+In order to reduce the risk of burns orother personal injury from escaping gasvapor and fumes, remove the fuel fillercap carefully so as to allow any pressurebuild-up in the tank to release slowly.

�*��+After fueling, tighten fuel cap ��"#��,��" by hand.Use a suitable tool (e.g. screwdriver endof combination wrench) to tightenslotted fuel caps.

(�"��

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Change the fuel pick up body every year.

Before storing your machine for a longperiod, drain and clean the fuel tank andrun engine until carburetor is dry.

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For automatic and reliable lubrication ofthe chain and guide bar:/��"#��0��"� #1�2��! �""#��!,� ��"��"�� $&%34-��"�� '� ��5 "�� 2�� ,��"#��"&%34-��,"��!!��$

3!,�� Biological chain oil must beresistant to aging (e.g. STIHL Bioplus)since it will otherwise quickly turn toresin. This results in hard deposits thatare difficult to remove, especially in thearea of the chain drive, clutch and chain.It may even cause the oil pump to seize.

The service life of the chain and guidebar depends on the quality of thelubricant. It is therefore essential to useonly a specially formulated chainlubricant.

If special chain lubricant is not available,you may - in an emergency - use an HDsingle grade or multigrade engine oilwith a viscosity that suits the prevailingoutside temperature.

�*��+Medical studies have shown thatrenewed contact with waste oil cancause skin cancer. Avoid direct contactwith waste oil. If waste oil does get onyour skin, wash with soap and water.�� waste oil for any purpose,and dispose of it only at authorizeddisposal locations.

• Thoroughly clean the oil filler capand the area around it to ensurethat no dirt falls into the tank.

• Refill the chain oil tank�every timeyou refuel.

There must still be a small amount of oilin the oil tank when the fuel tank isempty.If the oil tank is still partly full, the reasonmay be a problem in the oil supplysystem:Check chain lubrication, clean theoil passages, contact your STIHL dealerfor assistance if necessary.

�6 ��

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- in an emergency- when starting- at idling speed.

• The chain is stopped and lockedwhen the hand guard is pushedtoward the bar nose by the left hand -or when brake is activated by inertiain certain kickback situations.

7"��

• Pull the hand guard back towardthe front handle.

8� ��Always disengage chain brakebefore accelerating engine and beforestarting cutting work. The only exceptionto this rule is when you check operationof the chain brake. High revs with thechain brake engaged (chain locked) willquickly damage the powerhead andchain drive (clutch, chain brake).

%��"�� 2� ��# �� if the kickback force of the saw is highenough:The hand guard is accelerated towardthe bar nose - even if your left hand isnot behind the hand guard, e.g. duringfelling cut.The chain brake will operate only if thehand guard has not been modified inany way.

��,��

Before starting work: Run engine atidle speed, engage the chain brake(push hand guard toward bar nose).Accelerate up to full throttle for no morethan 3 seconds - the chain must notrotate. The hand guard must be free ofdirt and move freely.

��!��

The chain brake is subject to normalwear and tear. It must therefore bechecked and serviced regularly bytrained personnel (e.g. STIHL dealer) atthe following intervals:

Full-time professionalusers: every 3 monthsSemi-professionalusers: every 6 monthsOccasional users: every 12 months

�� 9

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To start the engine, move the lever to"Cold Start" position ��-do not use force.If the Master Control lever is on"Run"��: Press down the throttle triggerinterlock - and move the Master Controllever downward."Cold Start" position: Choke shutter isclosed - throttle trigger is in starting-throttle position. A cold engine shouldbe started in this position.As soon as engine begins to fire,move the Master Control lever to"Warm Start" position ��:Move the Master Control lever onenotch upward.

"Warm Start" position:Choke shutter is open -throttle trigger is in starting-throttlepositionIf you leave the Master Control leverin the "Cold Start" position,the combustion chamber will floodand stall the engine.The Master Control lever must be in"Warm Start" position ��to start a warmengine. Also select this position if enginehas been running but is still cold.

The Master Control lever should not beforced to "Run" position�� -it will move to "Run" as soon as the throttle trigger is activated.

In the "Warm Start" position, continuecranking after engine begins to fire.As soon as the engine runs,�!!�� "# blip the throttle triggerso that the Master Control lever moves to"Run" -idling position -normal operating position ��.

%�� '� ��Move the Master Control lever upwardto "STOP" position ��:The stop contact engages the contactspring - this cuts out the ignition system.

3 ��!� �� :��& �� 5��; �� # +�5

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• Press in the button

Compression pressure is released when the button is pressed in.This helps reduce the effort required to pull the starter rope.

• For this reason the botton shouldbe pressed in before each startingattempt.

• Observe safety precautions - see section "Safety Precautions".Push hand guard forward ��:The chain is now locked -Press throttle trigger interlock ��and set

• Master Control lever to:

For cold start �

For warm start �

(even if engine has been running but is still cold)

• Place your saw on the ground -make sure you have a firm footing -check that chain is not touching anyobjects or the ground -bystanders must be well clear of general work area of the saw -

• Hold the saw firmly on the groundwith your left hand on the fronthandle - your left thumb should beunder the handle -

• put your right foot into the rear handle and press down.

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Alternative method of starting:

• Hold the rear handle tightly between your legs, just above theknees -

• grip the front handle firmly with yourleft hand -your thumb should be under thehandle -

• Pull the starter grip slowly with yourright hand until you feel it engage -then give the grip a brisk strong pulland push down the front handleat the same time -do not pull out starter rope morethan 70 cm (about 28 in) -it might otherwise break.Do not let the starter grip snap back -guide it slowly into the housingso that the starter rope can rewindproperly.If engine is new, pull starter gripseveral times to prime the fuel line.

When engine begins to fire:Move Master Control lever �� to � and continue cranking -��1�!!�� "# blip the throttletrigger �� -the Master Control lever ��willmoveto "Run" position �� and the engine settles downto idling speed.

As the chain brake is still engaged, theengine must be returned to idling speedimmediately to avoid damage to the engine and chain drive (clutch, chain brake).

3

4

5

0

STOP

143B

A01

9 K

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143B

A02

0 K

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• Pull the hand guard back towardthe front handle:the chain brake is nowdisengaged - � your saw is ready for operation.

• Observe safety precautions.• Always check operation of chain

lubrication before starting work.&�� '��

• Move Master Control lever to"Stop" �

Always disengage the chain brake before opening the throttle. Running theengine at higher revs with the chain brake engaged (saw chain at a standstill) will quickly damage the engineand chain drive (clutch, chain brake).

< �2�#�"�'�� !,�� <""�'�� '��!��,

As soon as the engine runs:• Blip the throttle trigger

to disengage it from starting throttleposition -Master Control lever will moveto normal operating position -engine settles down to idling speed.

• Disengage chain brake:Pull hand guard toward front handle as shown in illustration -

• Open throttle slightly -warm up engine for short period.

• Change over to winter operationif necessary -see section "Winter Operation".

3 ��; ��

If you did not move the Master Controllever to "Warm Start" � quickly enough after the engine beganto fire, the combustion chamber hasflooded.

• Turn knob or lever above rear handle 90° counterclockwise.

• Lift off the carburetor box cover vertically.

143B

A01

2 K

N

143B

A01

2 K

N

133B

A00

9 K

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��

• Pull off the spark plug terminal -• Take out screw and remove the

shroud -• Unscrew and dry off the spark plug -

• Set the Master Control lever to �

• Crank the engine several timeswith the starterto clear the combustion chamber -

• Refit the spark plug and connectthe spark plug terminal -reassemble all other parts

• Set Master Control leverto "Warm Start" � even if engine is cold -

• Now start the engine.

(�"� �� "��#�� "�

• Pull starter rope several times untilfuel line is primed.

The saw chain must always throw offa small amount of oil.

• Never operate your saw withoutchain lubrication. If the chain is rundry the whole cutting attachmentwill be irretrievably damaged withina very short time.Always check chain lubrication andoil level in tank before starting work.

• Every new chain has to be brokenin for about 2 to 3 minutes.

• After breaking in chain,check chain tensionand adjust if necessary -see section"Checking chain tension".

Different quantities of oil are required fordifferent bar lengths, types of wood andcutting techniques.

Use the adjusting screw (�) to vary theoil feed rate as required.

• Most economic setting -turn adjusting screw to "="(�matic position).

• To increase oil feed -turn adjusting screw clockwise.

• To reduce oil feed -turn adjusting screw counter-clockwise.

Your chain must always be wetted witha film of lubricant.

143B

A02

4 K

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1

145B

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.�"�>�� #�� "

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A factory new machine should not berun at high revs (full throttle off load)for the first three tank fillings. This avoidsunnecessary high loads during thebreak-in period.

As all moving parts have to bed induring the break-in period, the frictionalresistances in the engine are greaterduring this period. The engine developsits maximum power after about 5 to 15tank fillings.

�� !�� !�) ��"�� 2��,,�� ,�'��5� ��"��!�� 5�� ?<�@�� ?$

3!,�� Always disengage the chainbrake before opening the throttle. Running the engine at higherrevs with the chain brake engaged (sawchain at a standstill) will quickly damagethe engine and chain drive (clutch, chainbrake).

�� 0� "#$A new chain has to be retensioned moreoften than one that has been in use forsome time.

��"��Tension is correct when chain fits snuglyagainst the underside of the bar and canstill be pulled along the bar by hand.Retension if necessary -see section "Tensioning the Saw Chain".

�� ,�� !,�� The chain stretches and begins to sag.The drive links must not come out of thebar groove - the chain may otherwisejump off the bar.Retension the chain -see section "Tensioning the Saw Chain".

Always slacken off the chain afterfinishing work.The chain contracts as it cools down.If it is not slackened off, it can damagethe crankshaft and bearings.

< ��"��,�� ""5 �� "��,�� Allow engine to run for a short whileat idling speed so that engine heat canbe dissipated by flow of cooling air.This protects engine-mounted compo-nents (ignition, carburetor) from thermaloverload.

• Slacken off the chain if you have retensioned it at operatingtemperature during cutting work.

The chain contracts as it cools down.If it is not slackened off, it could damagethe crankshaft and bearings.

� �� #��' ��"��,��5See chapter "Storing the Chain Saw".

��5��A�� .,�� < ��(��*��

��

If engine is down on power, check thespark arresting screen in the muffler:

• Take out the screw ��.• Remove the spark arresting

screen ��.• Clean spark arresting screen if

necessary.

• If screen is damaged or coked up,fit a new one.

• Refit the spark arresting screen inthe reverse sequence.

�"��<��(�" �

The air filter system can be adapted tosuit different operating conditions by simply installing a choice of filters.

(�� " ��5for normal operating conditions and winter operation

("�� " ��5for dry and very dusty work areas

*�� "�"�� ,�'��

• Turn knob or lever �� above rearhandle 90° counterclockwise.

• Lift off the carburetor box cover �� vertically.

• Clean away loose dirt from aroundfilter.

• Unscrew the slotted nuts��.• Remove filter.• Separate the two halves of the filter.

• Knock the filter out on the palm ofyour hand or blow it out with com-pressed air from the inside outwards

3�� • Wash the air filter in fresh, non-

flammable cleaning solution (e.g.warm soapy water) and then dry.

82�� "�� "� �" ��"! +• Always replace a damaged filter

element.

• Make sure that the choke shutter�� with spring is properly fitted.

• Reinstall the filter.

<��(�" ��&#� !

133B

A01

1 K

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1

21

2

3

133B

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143B

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Dirty air filters reduce engine power,increase fuel consumption and makestarting more difficult.

��

< � !,�� "�'�B��C��C(��A��

• Turn knob or lever above rear handle 90° counterclockwise.

• Lift off the carburetor box cover vertically.

��'� ��

• Remove the screw (1)

• Pull out the shutter (2) and refit it in the "winter" position (bottom illustration)

• Insert screw and tighten it down.Preheated air from around the cylinder isnow drawn in along with cold air - thishelps prevent carburetor icing.

%�� !�� ?��!!�?�,�� ,��""�� '�� !,�� C��C(�$�%��#� ��2��,��"!�� 2�� $

��'� �� )��2��

• Pry the shutter �� out of the carburetor box cover and slide itinto the slot �� at the bottom end ofthe carburetor box cover.

%�� !�� ?��!!�?�,�� '�� !,�� C��C(�$�%��#� ��2��,��"!�� 2�� $

3

133B

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It is advisable to fit the optional intakeair preheating kit if you use your saw inextremely cold conditions (temperaturesbelow -10 °C /+14 °F, in powder or drifting snow).

When fitted, the kit ensures that onlyheated air is drawn in from around thecylinder - it prevents air filter and carburetor icing.

The shutter or cover for carburetorpreheating must be in the "winter" position when the intake air preheatingkit is fitted.

If your saw is very cold (frost or ice onmachine), start the engine and keep itat a high idle speed (with chain brake disengaged) until it reaches normaloperating temperature.

The air filter may load up faster whenyou use intake air preheating -clean it more frequently.

In the event of engine running problems,first check that conditions for useof intake air preheating still apply.

* Special accessory

Switching on electric handle heating*

• Move switch on front handle to Move switch back to to switch off heating.

There is no risk of overheating duringlong periods of operation.The whole heating system ismaintenance-free.

* Special accessory

• Turn the bar over - every time yousharpen the chain - and every timeyou replace the chain -this avoids one-sided wear, especially at nose and underside of the bar.

Regularly clean��D� oil inlet hole��D� oilway��D� bar groove.

• ��2��, ��5with scale on filing gauge* -at nose of Duromatic bars -in area used most for cuttingon Rollomatic bars.

* Special accessory

138B

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143B

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%�� F��

�6 ��

Chain Pitch Minimumtype groove

depth

Rapid 0.325" 6.0 mm (0.24")Picco 3/8" 6.0 mm (0.24")Rapid 3/8" 6.0 mm (0.24")

If groove depth is less than specified:7,"�� $

The drive link tangs will otherwise scrapealong the bottom of the groove - the cutters and tie straps will not ride onthe bar rails.

7,"�� ,�� '��.�"�!� ��

or sooner if the wear marks on the sprok-ket are deeper than approx.0.5 mm (1/64") since this would reducethe life of the chain.Check wear marks:Left: on webs of rim sprockets -Right: on teeth of spur sprockets.

You can use gauge* 0000 893 4101to check the depth of the wear marks onspur and rim sprockets.It is best to use two chains in rotationwith one sprocket.

� ��!�2��,�� • Remove chain sprocket cover,

chain and guide bar.• Disengage the chain brake:

Pull hand guard toward front handle.

* Special accessory

7�!��,��

Use a screwdriver to

• remove the E-clip.• Take off the washer and

• rim sprocket.• Examine splines on clutch drum -

if wear marks are severe, fit a newclutch drum:

Pull clutch drum and needle cageoff the crankshaft - clean thecrankshaft stub and needle cage,and lubricate with STIHL grease(tube 0781 120 1111).Reassemble with new rim sprocketand new clutch drum, if necessary -

• fit rim sprocket with cavities facingoutward -

refit washer and E-clip on the crankshaft.

Use only original STIHL clutch drums toensure correct operationof the chain brake.

��7,"��&,��

�� 9

&,��,��

Use a screwdriver to

• remove the E-clip.• Pull washer, spur sprocket and

needle cage off the crankshaft.

Clean the crankshaft stub andneedle cage, and lubricate withSTIHL grease(tube 0781 120 1111).

Reassemble with new spur sprocket -After fitting the clutch drum, rotateit about one turn to engageoil pump drive -refit washer and E-clip on the crankshaft.

Use only original STIHL chainsprockets to ensure correctoperation of the chain brake.

�� !��!

Exhaust emissions are controlled by thedesign of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the additionof any major hardware.The carburetor is set at the factory toguarantee an optimum fuel-air mixtureunder all operating conditions.Emissions at idling speed and part-loadare kept to a minimum by reducing theidle mixture.

• Check the air filter and clean or re-place it if necessary.

• Check the spark arresting screenand clean or replace it if necessary.

Carefully screw the low speed screw �-� down onto its seat. Now open it one turn counter-clockwise (standardsetting, -�D��)

• Warm up the engine.

It is usually necessary to change the setting of the idle speed screw��-<� after every correction to the low speedscrew��-�.

Turn screws only very slightly and carefully - even minor changes have anoticeable effect on the engine’s runningbehavior.

=�� ,��'��"��"��;-;��'�!�� ,$

Turn the idle speed screw �-<� clockwiseuntil chain begins to run -then back off the screw one quarterof a turn.

��'��"��;-;��'�!�� ,$

Turn the idle speed screw �-<�counterclockwise until chainstops running -then turn screw another quarter turn inthe same direction.

K

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133B

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Idle setting is too lean.Turn the low speed screw �-� counter-clockwise until engine runs andaccelerates smoothly.

��&,��A"��

Wrong fuel mix (too much engine oil inthe gasoline), a dirty air filter andunfavorable running conditions (mostlyat part throttle etc.) affect the condition ofthe spark plug. These factors cause deposits to form on the insulator nosewhich may result in trouble in operation.

If engine is down on power, difficult tostart or runs poorly at idling speed,first check the spark plug.

• Remove spark plug -see chapter “Starting”:

• Clean dirty spark plug.

• Check electrode gap - it should be 0.5mm/0.02" �<� -readjust if necessary.

• Use only resistor type spark plugsof the approved range.

Rectify problems which have caused fouling of spark plug:Incorrect carburetor setting, too much oilin fuel mix, dirty air filter, unfavorable running conditions, e.g.operating at part load.

• Fit a new spark plug after approx. 100 operating hours -or earlier if the electrodes arebadly eroded.

�*��+To reduce the risk of fire and burn injury,use only spark plugs authorized bySTIHL (see “Specifications”). Alwayspress spark plug boot �� snugly ontospark plug terminal �� of the propersize. (Note: If terminal has detachableSAE adapter nut, it must be attached.) A loose connection between spark plugterminal and ignition wire connector inthe boot may create arcing that could ignite combustible fumes and cause afire.

000B

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7,"��& �� 7�,

• Take out the screws ��.• Remove four screws -• Push the hand guard upward -

• Pull underside of fan housing awayfrom crankcase and remove itdownward

• Ease the spring clip �� off the starter post.

• Carefully slip the washer �� andpawl �� off the starter post.

*��+ Take particular care to avoid injury - therewind spring may pop out and unwind.�

• Ease the cap ��out of the startergrip.

• Remove remaining rope from the rotor and grip. Make sure the sleeve does not slip out of the grip.

• Tie a simple overhand knot in theend of the new starter rope - 1113 195 8200 (Ø 3,5x960) - and then thread the rope throughthe top of the grip and the ropebush ��.

• Refit the cap in the grip.

• Pull the rope through the rotor andsecure it with a simple overhandknot.

&�'��'� �� ="��

• Thread the new rope - 3.5 mm (9/64") dia. and 960 mm373/4") long - through the rotor andsecure it with a simple overhandknot.

• Thread the other end of the ropethrough the guide bush (from inside) and the underside of thestarter grip and secure it with a special knot - do not wind rope ontorotor.

23

4

133B

A01

5 K

N

133B

A04

0 K

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6

51

1 1

1

133B

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• Coat rope rotor bearing bore with non-resinous oil -

• slip rotor over starter post - turn itback and forth so that anchor loopof rewind spring engages -

Refit the pawl �� in the rotor -fit the washer �� on the starter post- use screwdriver or suitable pliersto install spring clip �� on starter post and engage it on thepawl’s peg - the spring clip must point clockwise - see illustration.

%��'��,��• Make a loop in the unwound starter

rope and use it to turn the rope ro-tor six full revolutions clockwise.

• Hold the rotor steady -

• straighten the twisted rope - • release the rotor -

• let go of rope slowly so that it winds onto the rotor.

The starter grip must locate firmly in the rope guide bush.If the grip droops to one side: Add one more turn on rope rotorto increase spring tension.

• When starter rope is fully extended it must still be possible to rotate the rotor at least another half turn. If this is not the case, the spring is overtensioned and could break. Take one turn off the rope.

• Refit the fan housing.

7,"��'��,��• Lubricate the new spring with

a few drops of non-resinous oil.• Remove the rope rotor -

see ,,Replacing Starter Rope“ -• remove the spring housing

and parts of spring -• fit the new spring housing -

bottom plate must face upward -slip outer spring loop over lug.

• Reinstall the rope rotor, tension the rewind spring, fit the fan housing and secure in position.If the spring pops out of its housing during installation: refit it in the counterclockwise direction, starting outside and working inward.

133B

A01

7 K

N

2

1

3

133B

A02

0 K

N

133B

A02

1 K

N

��

��

A properly sharpened chain slicesthrough wood effortlessly and requiresvery little feed pressure.

Do not work with a dull or damagedchain as it will increase the physicaleffort required, produce unsatisfactoryresults and a higher rate of wear.

��for cracks in the links and damagedrivets - replace any damaged or worn parts ofthe chain and match the new parts to theshape and size of the original parts.

�� It is absolutely imperative tocomply with the angles and dimensionsspecified below. If the �� - and inparticular if the depth gauge is set toolow - there is a risk of increasedkickback of the chainsaw, with resulting��.

�� .See “Technical Data” for the permittedchain pitches.

The chain pitch (e.g. 3/8) is marked onthe depth gauge side of each cutter.

��

Other files have the wrong shape andcut.

Select file diameter according to chainpitch - see table at the end of thischapter.

You must observe certain angles whenresharpening the chain cutters

�� Filing angle�� Side plate angle

Chain type Angle (°)A B

Rapid-Micro (RM) 30 85Rapid-Super (RS) 30 60Picco-Micro (PM/PMN) 30 85

Cutter shapes:Micro = Semi-chiselSuper = Full chisel

� �� !

Furthermore, the angles must be thesame on all cutters.If angles are uneven: Chain will run roughly, not in a straight line, wear quickly and finally break.

"��

A

B

689B

A02

1 K

N

3/8

689B

A02

0 K

N

##

As these requirements can be met onlyafter sufficient and constant practice:

��!*

A file holder must be used for manualresharpening of Super chain. The correctfiling angle is marked on the file holder.

$��STlHL filing gauge* (see table)A universal tool for checking the filingand side plate angles, depth gauge setting and cutter length. Also cleans theguide bar groove and oil inlet hole.

$��

• If you use a file holder or the FG 1:Leave the chain on the bar.

• Clamp the bar in a vise if necessary.• Lock the chain - push hand guard

forward• To rotate the chain - pull hand

guard against front handle• Sharpen chain frequently, take

away as little metal as possible -two or three strokes of the file areusually enough

• Always file from the inside to theoutside of the cutter.

• The file only sharpens on the forward stroke -lift the file off the cutter on the back-stroke.

• Hold the file ��%�� for allchain types (at right angle to side ofguide bar) and file according to theangles marked on the filing tool.

• Avoid touching the tie straps and drive links with the file.

• Rotate the file at regular intervalswhile filing -this avoids one-sided wear.

• Use a piece of hardwood to removeburrs from cutting edge.

• Check angles with the filing gauge.

��

If the cutters are not the same length,they will have different heights. This makes the chain run roughly and cancause it to break.

Find the shortest cutter and then file allother cutters back to the same length.This can be very time consuming - it isbest to have it done in the workshop onan electric grinder.

* Special accessory

90°

689B

A01

8 K

N

689B

A02

5 K

N

90°60°85° 70° 80°

0°

35°

10°

30°

689B

A02

2 K

N

#&

'� ��

The depth gauge determines the heightat which the cutter enters the wood andthus the thickness of the chip removed.

Distance between depth gauge andcutting edge = ��

Chain Depth gaugepitch distance “�”

Inch (mm) mm (Inch)

1/4 (6.35) 0.65 (0.026)3/8-PM (9.32) 0.65 (0.018)3/8-PMN (9.32) 0.45 (0.026)0.325 (8.25) 0.65 (0.026)3/8 (9.32) 0.65 (0.026)0.404 (10.26) 0.80 (0.031)

This setting may be increased by 0.2 mm(0.008") for cutting softwood in mildweather season - no frost.

(��

The depth gauge setting is reducedwhen the chain is sharpened. Use filinggauge to check the setting every timeyou sharpen the chain and, if necessary,lower the depth gauge with a flat ortriangular file so that it is level with thefiling gauge.

Round off depth gauges parallel to thestamped marking.

�� Clean the chain thoroughly, remove filings or grinding dust - lubricate thechain by immersing it in an oil bath.

�� )�� Clean the chain with a brush and immerse it in an oil bath.

689B

A02

4 K

N

a

689B

A02

3 K

N

��

Chain pitch Round file Ø Round file File holder Filing gauge Flat file Sharpening kit*Inch (mm) mm (Inch) Part No. Part No. Part No. Part No. Part No.

1/4 (6.35) 4.0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 353 3356 5605 007 10273/8 PMN (9.32) 4.0 (5/32) 5605 772 4006 5605 750 4327 0000 893 4000 0814 353 3356 5605 007 10263/8 P (9.32) 4.0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 353 3356 5605 007 10270.325 (8.25) 4.8 (3/16) 5605 772 4806 5605 750 4328 1110 893 4000 0814 353 3356 5605 007 10283/8 (9.32) 5.2 (13/64) 5605 772 5206 5605 750 4329 1110 893 4000 0814 353 3356 5605 007 10290.404 (10.26) 5.5 (7/32) 5605 772 5506 5605 750 4330 1106 893 4000 0814 353 3356 5605 007 1030

* consisting of file holder with round file, flat file and filing gauge.

#*

Please note that the following maintenance intervals apply for normal operatingconditions only. If your daily working time is longer than normal or cutting conditions are difficult(very dusty work area tropical wood etc.) shorten the specified intervals accordingly.

befo

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:

Complete machineVisual inspection (condition, leaks) x xClean x

Throttle trigger , throttle trigger interlock, Master Control, depending on model Check operation x x

Chain brakeCheck operation x x 29Clean by STIHL dealer x 29

Filter in fuel tankCheck x 28Clean, Replace filter element x

Fuel tank Clean xChain oil tank Clean xChain lubrication Check x 28

Saw chainInspect, also check sharpness x x 45Check chain tension x x 26Sharpen x 45

Guide bar

Check (wear, damage) x 38Clean and turn over x xDeburr xReplace x x

Chain sprocket Check x 39

Air filterClean x x 36Replace x

Cooling inlets Clean xCylinder fins Clean x

CarburetorCheck idle adjustment – chain must not turn x x 40Readjust idle x

Spark plug Replace x 42All accessible screws and nuts(not adjusting screws) Retighten xRubber vibration buffers Have replaced by STIHL dealer x

MufflerInspect x xInspect spark arresting screen xClean or replace spark arresting screen x x

Chain catcherCheck xReplace x

��

� � ��

��

STIHL single cylinder two-stroke engineDisplacement: 48.7 cm3 (2.97 cu.in)Bore: 44 mm (1.73 in)Stroke: 32 mm (1.26 in)Idle speed: 2.800 r.p.m.

��Type:Electronic magneto ignition (breakerless)Spark plug (suppressed):Bosch WSR 6 For NGK BPMR 7 AElectrode gap 0.5 mm (0.02 in)Spark plug thread:M 14x1.25; 9.5 mm (0.37 in) long

��Carburetor:All position diaphragm carburetor with integral fuel pumpAir filter:Prefilter and bisectional box filterFuel capacity: 0.46 l (0.97 U.S. pt)Fuel mixture: See chapter "Fuel"Chain lubrication:Fully automatic, speedcontrolled plungertype oil pump. Additional manual oil flowcontrolOil tank capacity: 0.29 l (0.61 US pt)

��(without bar and chain)026; 4.7 kg (10.4 lb)026 W 4.9 kg (10.8 lb)

��Recommended cutting attachmentsfor compliance with § 5.12 of ANSIStandard B 175.1-1991(see page 12 of this Manual):

STIHL reduced kickback bar(with green label):for 0.325" pitch and 3/8" pitch:Rollomatic with sprocket nose40, 45 or 50 cm (16, 18 or 20 in)STIHL low kickback chain*(with green label):8.25 mm (0.325") Rapid-Micro 2 (26 RM 2), 9.32 mm (3/8") Rapid-Micro 2 (33/36 RM 2)Chain sprocket:7-tooth for 0.325" pitch, 7-tooth for 3/8" pitch

Other cutting attachments available forthis powerhead are:STIHL yellow-labeled bar:for 0.325" pitch and 3/8" pitch:Rollomatic "S" with sprocket nose40, 45 or 50 cm (16, 18 or 20 in)Duromatic with stellite tipped nose40, 45 or 50 cm (16, 18 or 20 in)

STIHL yellow-labeled chains:for 0.325" pitch:Rapid-Micro (26 RM) andRapid-Super (26 RS) for 3/8" pitch:Rapid-Micro (33/36 RM) and Rapid-Super (33/36 RS)Since new bar/chain combinations maybe developed after publication of thisManual, ask your STIHL dealer for thelatest STIHL recommendations.

In order to comply with the kickbackperformance requirements of § 5.12of ANSI Standard B 175.1-1991,do not use replacement saw chainunless it has been designated asmeeting the ANSI § 5.12 requirementson this specific powerhead, or has beendesignated as "low kickback" saw chain*in accordance with the ANSI B 175.1-1991 standard.

*See definition of "low kickback chain"on page 11 of this Manual.

� ��!��

�" � �

Please enter your saw model, machinenumber as well as the part numbers ofthe guide bar, saw chain and chainsprocket in the spaces provided on theright

This will make re-ordering simpler.

The guide bar, saw chain and chainsprocket are subject to normal wear andtear.

The part numbers of the standard bar,chain and sprocket are printed on theright for your convenience.

When purchasing these parts, alwaysquote the saw model, the part numbersand names of the parts.

For recommended STIHL reducedkickback cutting attachmentssee section "Specifications"of this Owner's Manual.

��!��%�� &�� #��!�� &�� !��#�&��'�#�(�)*��+�� (�)*�� ,

Original STIHL parts can be identified by the STIHL part number, the logo STIHL�and the STIHL parts symbol �The symbol may appear aloneon small parts.

* depending on market

Model

Machine number

Guide bar part number

Chain part number

Sprocket part number

��#�� -��

For periods of about 3 months or longer:

• Drain and clean the fuel tank in awell ventilated area.

• Run engine until carburetor is dry -this helps prevent the carburetordiaphragms sticking together.

• Remove the saw chain and guidebar, clean them and protectwith corrosion inhibiting oil.

• Thoroughly clean the machine -pay special attention to thecylinder fins and air filter.

• If you use a biological chain lubri-cant (e.g. STIHL Bioplus), fill thechain oil tank.

• Store the machine in a dry and highor locked location - out of thereach of children and otherunauthorized persons.

� � �.

�(�)*�� #��#��

/��0��#��&��

The U.S. Environmental ProtectionAgency (EPA), the California Air Resources Board (CARB) and STIHL Incorporated are pleased to explain theEmission Control System Warranty onyour model year 2000 and later equip-ment type engine. In California, newsmall off-road engines must be designed,built and equipped to meet the State’sstringent anti-smog standards. In otherstates, new 1997 and later model yearsmall off-road equipment engines mustbe designed, built and equipped, at thetime of sale, to meet the U.S. EPA regulations for small non road engines.The equipment engine must be free fromdefects in materials and workmanshipwhich cause it to fail to conform withU.S. EPA standards for the first two years of engine use from the date ofsale to the ultimate purchaser.

STIHL Incorporated must warrant theemission control system on your smalloff-road engine for the period of time listed below provided there has been noabuse, neglect or improper maintenanceof your small off-road equipment engine.

Your emission control system includesparts such as the carburetor and the ignition system. Also included may behoses, and connectors and other emission related assemblies.

Where a warrantable condition exists,STIHL Incorporated will repair your smalloff-road equipment engine at no cost toyou, including diagnosis (if the diagnosticwork is performed at an authorizeddealer), parts, and labor.

��!��1��+��2The small off-road equipment enginesare warranted for two years in California.In other states, 1997 and later modelyear small off-road equipment enginesare also warranted for two years. If anyemission-related part on your engine isdefective, the part will be repaired or replaced by STIHL Incorporated free ofcharge.

�%��1��0�� &��2As the small off-road equipment engineowner, you are responsible for the per-formance of the required maintenance listed in your owner’s manual. STIHL Incorporated recommends that you retain all receipts covering maintenanceon your small off-road equipment engine,but STIHL Incorporated cannot denywarranty solely for the lack of receipts orfor your failure to ensure the perform-ance of all scheduled maintenance.

Any replacement part or service that isequivalent in performance and durabilitymay be used in non-warranty mainten-ance or repairs, and shall not reduce thewarranty obligations of the engine manufacturer.

As the small off-road equipment engineowner, you should be aware, however,that STIHL Incorporated may deny youwarranty coverage if your small off-roadequipment engine or a part has faileddue to abuse, neglect, improper mainten-ance or unapproved modifications.

You are responsible for presenting yoursmall off-road equipment engine to aSTIHL service center as soon as a problem exists. The warranty repairs willbe completed in a reasonable amount oftime, not to exceed 30 days.If you have any questions regardingyour warranty rights and responsibilities,please contact a STIHL customer service representative at 1-800-467-8445 or you can write to STIHL Inc.,536 Viking Drive, P.O. Box 2015,Virginia Beach, VA 23450-2015.

�+��&��(�)*�� #STIHL Incorporated warrants to the ultimate purchaser and each subsequentpurchaser that your small off-road equipment engine will be designed, built and equipped, at the time of sale, to meet all applicable regulations. STIHLIncorporated also warrants to the initialpurchaser and each subsequent purchaser that your engine is free fromdefects in materials and workmanshipwhich cause the engine to fail to conform with applicable regulations for aperiod of two years.

3� � �

��-��#The warranty periods will begin on thedate the utility equipment engine is purchased by the initial purchaser andyou have signed and sent back the warranty card to STIHL. If any emissionrelated part on your engine is defective,the part will be replaced by STIHL Incorporated at no cost to the owner.Any warranted part which is not scheduled for replacement as requiredmaintenance, or which is scheduled onlyfor regular inspection to the effect of "repair or replace as necessary" will bewarranted for the warranty period. Any warranted part which is scheduledfor replacement as required mainten-ance will be warranted for the period oftime up to the first scheduled replace-ment point for that part.

4��You, as the owner, shall not be chargedfor diagnostic labor which leads to thedetermination that a warranted part is defective. However, if you claim warrantyfor a component and the machine is tested as non-defective, STIHL Incorporated will charge you for the costof the emission test.Mechanical diagnostic work will be performed at an authorized STIHL servicing dealer. Emission test may beperformed either at STIHL Incorporatedor at any independent test laboratory.

��5STIHL Incorporated shall remedy war-ranty defects at any authorizedSTIHL servicing dealer or warranty station. Any such work shall be free ofcharge to the owner if it is determinedthat a warranted part is defective. Anymanufacturer-approved or equivalentreplacement part may be used for anywarranty mainten-ance or repairs onemission-related parts and must be provided without charge to the owner.STIHL Incorporated is liable for damagesto other engine components caused bythe failure of a warranted part still underwarranty.

The California Air Resources Board’sEmission Warranty Parts List specificallydefines the emission-related warrantedparts. These warranted parts are:

CarburetorChoke (Cold start enrichment system)Intake manifoldAir filter Spark plugMagneto or electronic ignition system(ignition module)Catalytic converter (if applicable)Fasteners

��5��!��+��Bring the product to any authorizedSTIHL servicing dealer and present thesigned warranty card.

��0�$��The maintenance instructions in this manual are based on the application ofthe recommended 2-stroke fuel-oil mixture (see also instruction "Fuel"). Deviations from this recommendation regarding quality and mixing ratio of fueland oil may require shorter maintenanceintervals.

*��This Emission Control Systems Warranty shall not cover any of the following:

- repair or replacement required because of misuse, neglect or lack ofrequired maintenance,

- repairs improperly performed or replacements not conforming toSTIHL Incorporated specifications thatadversely affect performance and/ordurability, and alterations or modifications not recommended or approved in writing by STIHL Incorporated,

and

- replacement of parts and other services and adjustments necessaryfor required maintenance at and afterthe first scheduled replacement point.

� � 36

3 � �

4. Use caution when handling fuel.Move the chainsaw at least 10 feet (3 m) from the fuelingpoint before starting the engine.

5. Do not allow other persons tobe near the chainsaw whenstarting or cutting with thechainsaw. Keep bystandersand animals out of the workarea.

6. Do not start cutting until youhave a clear work area, securefooting, and a planned retreatpath from the falling tree.

7. Keep all parts of your bodyaway from the saw chain whenthe engine is running.

8. Before you start the engine,make sure that the saw chainis not contacting anything.

9. Carry the chainsaw with the engine stopped, the guide barand saw chain to the rear, andthe muffler away from yourbody.

10. Do not operate a chainsaw thatis damaged, improperly adjusted, or not completelyand securely assembled. Besure that the saw chain stops moving when the throttle triggeris released.

11. Shut off the engine before setting the chainsaw down.

12. Use extreme caution when cutting small size brush andsaplings because slender mate-rial may catch the saw chainand be whipped toward you orpull you off balance.

13. When cutting a limb that is under tension be alert forspringback so that you will notbe struck when the tension inthe wood fibers is released.

14. Keep the handles dry, clean,and free of oil or fuel mixture.

15. Operate the chainsaw only inwell-ventilated areas.

16. Do not operate a chainsaw in atree unless you have been specifically trained to do so.

17. All chainsaw service, other thanthe items listed in the Owner’s

Manual maintenance instruc-tions, should be performed bycompetent chainsaw servicepersonnel.(For example, if improper toolsare used to remove theflywheel or if an improper toolis used to hold the flywheel inorder to remove the clutch,structural damage to theflywheel could occur and couldbe subsequently cause theflywheel to burst).

18. When transporting your chain-saw, use the appropriate chainguard (scabbard).

Other important safety precautionsare contained in the body of theOwner’s Manual.

��

When using a chainsaw for loggingpurposes, refer to the Code of Federal Regulations, Parts 1910and 1928.

Continuation of Important Safety Precautions

! WARNING!

The engine exhaust from this product contains chemicals known to the State

of California to cause cancer, birth defects or other reproductive harm.

! WARNING!

The engine exhaust from this product contains chemicals known to the State

of California to cause cancer, birth defects or other reproductive harm.

0458 133 3021

englisch / English USA / EPA

BA_U4_86_01.fm Seite 1 Donnerstag, 11. Dezember 2003 11:11 11

instruction manual - stihl

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