Operator s manualPlease read these instructions carefully andmake sure you understand them beforeusing the saw.

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Symbols on the chain saw:

CAUTION! Chain saws can be dangerous!Careless or incorrect use can result inserious or fatal injury to the operator orothers.

KEY TO SYMBOLS

This product is in accordance withapplicable EC directives.

Other symbols/decals on the machine refer to specialcertification requirements for certain markets.

Symbols in the operator’s manual:

Switch off the engine by moving the stopswitch to the STOP position before carryingout any checks or maintenance.

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Protective glasses or a visor must be worn.

Noise emission to the environmentaccording to the European Community’sDirective.The machine’s emission is specified inchapter Technical data and on label.

Always wear:• Approved protective helmet• Approved hearing protection• Protective glasses or visor

Please read the instructions carefully andmake sure you understand them beforeusing the saw.

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CONTENTSContents

Key to symbols ......................................................2Safety instructionsPersonal protective equipment................................ 4Chain saw safety equipment ...................................4

Inspecting, maintaining and servicing chain sawsafety equipment ................................................................. 8

Cutting equipment .................................................10How to avoid kickback...........................................16General safety precautions ...................................18General working instructions .................................19What is what?

What is what? .................................................................... 24Assembly

Mounting guide bar and chain ........................................... 25Fuel handling

Fuelmix .............................................................................. 26Chain oil ............................................................................ 27The oil pump ...................................................................... 27Fuelling .............................................................................. 27

Start and StopStart and stop .................................................................... 28

MaintenanceCarburettor ........................................................................ 29Starter device .................................................................... 30Air filter .............................................................................. 31Spark plug ......................................................................... 31Muffler ................................................................................ 31Cooling system .................................................................. 32Centrifugal cleaning ”Turbo” .............................................. 32Winter use ......................................................................... 32Needle bearing maintenance ............................................ 32Daily maintenance: ............................................................ 33Weekly maintenance: ........................................................ 33Monthly maintenance: ....................................................... 33

Technical data2054 .................................................................................. 342055 .................................................................................. 34

Jonsered has a policy of continuous product development andtherefore reserves the right to modify the design andappearance of products without prior notice.

Before using a new saw• Read the instructions carefully.• Check cutting equipment is correctly fitted and adjusted.

See page 25.• Refuel and start the saw. Check the carburettor settings.

See pages 26-29.• Do not use the saw until sufficient chain oil has reached the

chain, see page 14.

IMPORTANT! If the carburettor mixture is too lean it greatlyincreases the risk of engine failure.Poor maintenance of the air filter will cause carbon build-up onthe spark plug and lead to difficult starting.If the chain is badly adjusted it will cause increased wear ordamage to the bar, drive sprocket and chain.

Under no circumstances should you modifythe original design of the chain saw withoutapproval from the manufacturer. Always usegenuine spare parts. Unauthorizedmodifications or accessories may lead toserious injury or death.

!

A chain saw is a dangerous tool if usedcarelessly or incorrectly and can causeserious, even fatal injuries. It is very importantthat you read and understand theseinstructions.

!

WARNING! The insides of mufflers fitted withcatalytic converters contain chemicals thatmay be carcinogenic. Avoid contact withthese elements in the event of a defectivemuffler.

!

Long term inhalation of the engine's exhaustfumes, chain oil mist and dust from sawdustcan represent a health risk.!

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CHAIN SAW SAFETY EQUIPMENTThis section explains the various safety features of the saw,how they work, and basic inspection and maintenance youshould carry out to ensure safe operation. (See the ”What iswhat?” section to find out where these components are on Yoursaw).

NEVER USE A CHAIN SAW THAT HASFAULTY SAFETY EQUIPMENT! Carry out theinspection, maintenance and service routineslisted in this section.

1 Chain brake and fronthand guard

2 Throttle lock

3 Chain catcher

4 Right hand guard

5 Vibration damping system

6 Stop switch

7 Muffler

8 Cutting equipment (see”Cutting equipment”section).

SAFETY INSTRUCTIONSPERSONAL PROTECTIVE EQUIPMENT

Most chain saw accidents happen when thechain touches the operator. You must useapproved personal protective equipmentwhenever you use the machine. Personalprotective equipment cannot eliminate therisk of injury but it will reduce the degree ofinjury if an accident does happen. Ask yourdealer for help in choosing the rightequipment.

• PROTECTIVE HELMET• HEARING PROTECTION• PROTECTIVE GLASSES

OR VISOR

• GLOVES WITHSAW PROTECTION

• PROTECTIVE TROUSERSWITH SAW PROTECTION

• BOOTS WITH SAWPROTECTION, STEELTOE-CAP AND NON-SLIPSOLE

Generally clothes should beclose-fitting without restrictingyour freedom of movement.

• ALWAYS HAVE A FIRSTAID KIT NEARBY

Long or continuous exposure to high noiselevels may cause permanent hearingimpairment. Always wear approved hearingprotection when operating a chain saw.

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1 Chain brake and front hand guardYOUR chain saw is equipped with a chain brake that is desig-ned to stop the chain immediately if you get a kickback.The chain brake reduces the risk of accidents, but only You canprevent them.

Take care when using yoursaw and make sure thekickback zone of the barnever touches any object.

1 The chain brake (A) caneither be activatedmanually (by your lefthand) or automatically bythe inertia releasemechanism (a free-swinging pendulum). Onmost of our models thefront hand guard acts as acounterweight in case ofkickback.

The brake is appliedwhen the front handguard (B) is pushedforwards.

This movement activatesa spring-loadedmechanism that tightensthe Brake Band (C)around the engine drivesystem (D) (Clutch Drum).

SAFETY INSTRUCTIONS2 The front hand guard is

not designed solely toactivate the chain brake.Another important safetyfeature is that it preventsthe chain from hitting yourleft hand if you lose yourgrip on the front handle.

3a StartingThe chain brake must beengaged when the chainsaw is started.

b You can also use thechain brake as atemporary brake when youchange position or if youput the saw down for ashort time. You shouldalso apply the chain brakemanually if there is a riskof the chain accidentallyhitting anyone or anythingclose by.

4 To release the chain brakepull the front hand guardbackwards, towards thefront handle.

5 As mentioned in section A,kickback can be verysudden and violent.Most kickbacks areminor and do not alwaysactivate the chain brake.If this happens youshould hold the chainsaw firmly and not letgo.

A

B

B

D

B

C

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6 The way the chain brake is triggered, either manually orautomatically, depends on the force of the kickback and theposition of the chain saw in relation to the object that thekickback zone of the bar strikes.

If you get a violentkickback while thekickback zone of the baris farthest away from youthe chain brake will beactivated by themovement of thecounterweight (INERTIAACTIVATED).

If the kickback is lessviolent or the kickbackzone of the bar is closerto you the chain brake willbe activated manually bythe movement of your lefthand.

7 During felling your lefthand grasps the fronthandle in such a way thatit cannot activate the fronthand guard. In thisposition the chain brakecan only be activated bythe inertia action of thecounterweight.

The inertia activatedchain brake increasesyour safety but there arecertain factors toremember (see point 6above).

2 Throttle lockThe throttle lock is designedto prevent accidental opera-tion of the throttle control.When you press the lock (A)(i.e. when you grasp thehandle) it releases the throttletrigger (B).When you release the handlethe throttle trigger and thethrottle lock both move backto their original positions. Thismovement is controlled by twoindependent return springs.This arrangement means thatthe throttle control isautomatically locked at theidle setting when you releasethe handle.

3 Chain catcherThe chain catcher is designedto catch the chain if it snaps orjumps off. This should nothappen if the chain is properlytensioned (see section on”Assembly”) and if the bar andchain are properly servicedand maintained.(See section on ”Generalworking instructions”).

4 Right hand guardApart from protecting yourhand if the chain jumps orsnaps, the right hand guardstops branches and twigsfrom interfering with your gripon the rear handle.

A

B

SAFETY INSTRUCTIONS

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5 Vibration damping systemYour chain saw is equippedwith a vibration dampingsystem that is designed tominimise vibrations and makeoperation easier.

When you use a chain sawvibrations are generated bythe uneven contact betweenthe chain and the wood youare cutting.

Cutting hardwoods (mostbroadleaf trees) creates morevibration than cuttingsoftwoods (most conifers).Cutting with a chain that isblunt or faulty (wrong type orbadly sharpened, see sectionD) will increase the vibrationlevel.

The vibration damping systemreduces the vibrationstransmitted from the engineand chain to the handles ofthe chain saw. The body ofthe saw, including the cuttingequipment, is insulated fromthe handles by vibrationdamping units.

Overexposure to vibration can lead tocirculatory damage or nerve damage in peoplewho have impaired circulation.Contact your doctor if you experiencesymptoms of overexposure to vibration.These symptoms include numbness, loss offeeling, tingling, pricking, pain, loss ofstrength, changes in skin colour or condition.These symptoms normally appear in thefingers, hands or wrists.

SAFETY INSTRUCTIONS

The exhaust fumes from the engine are hotand may contain sparks which can start a fire.Never start the saw indoors or nearcombustible material!

6 Stop switchUse the stop switch to switchoff the engine.

7 MufflerThe muffler is designed to keep noise levels to a minimum andto direct exhaust fumes away from the user.

In areas with a hot, dryclimate there is a high risk offorest fires. These areas aresometimes controlled bylegislation and requirementsthat among other things themuffler must be equipped withan approved type of sparkarrestor mesh.

For mufflers it is veryimportant that you follow theinstructions on checking,maintaining and servicing yoursaw (see the section on”Inspecting, maintaining andservicing chain saw safetyequipment”).

The muffler gets very hot in use and remainsso for a short time afterwards. DO NOTTOUCH THE MUFFLER IF IT IS HOT!

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4 Checking the brake trigger

Place the chain saw onfirm ground and start it.Make sure the chain doesnot touch the ground orany other object. See theinstructions under theheading Start and stop.

Grasp the saw firmly,wrapping your fingers andthumbs around thehandles.

Apply full throttle andactivate the chain brakeby tilting your wristforward onto the fronthand guard. Do not let goof the front handle.

The chain should stopimmediately.

3 Checking the inertia brake release

Hold the chain saw over astump or other firm object.Let go of the front handleso that the bar falls ontothe stump.

When the bar hits thestump the brake shouldbe applied.

Inspecting, maintaining and servicingchain saw safety equipment

SPECIAL TRAINING IS REQUIRED to serviceand repair chain saws. This is especially trueof chain saw safety equipment. If your chainsaw fails any of the checks described belowtake it to your SERVICE AGENT.When you buy any of our products weguarantee the availability of professionalrepairs and service. If the retailer who sellsyour saw is not a SERVICING DEALER, askhim for the address of your nearest SERVICEAGENT.

1 Chain brake and front hand guard

1 Checking brake band wear

Brush off any sawdust,resin and dirt from thechain brake and clutchdrum. Dirt and wear canimpair operation of thebrake.

Regularly check that thebrake band is at least 0.6mm thick at its thinnestpoint.

SAFETY INSTRUCTIONS

2 Checking the front hand guard

A Make sure theFRONT HAND GUARDis not damaged andthat there are no visibledefects such as cracks.

B Move the front handguard forwards andback to make sure itruns freely and that it issecurely anchored tothe clutch cover.

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SAFETY INSTRUCTIONS4 Right hand guard

Check that the right handguard is not damaged andthat there are no visibledefects, such as cracks.

5 Vibration damping system

Regularly check thevibration damping unitsfor cracks or deformation

Make sure the vibrationdamping units aresecurely attached to theengine unit and handles.

6 Stop switch

Start the engine andmake sure the enginestops when you move thestop switch to the stopsetting.

2 Throttle lock

1 Make sure the throttlecontrol is locked at theidle setting when yourelease the throttle lock.

2 Press the throttle lock andmake sure it returns to itsoriginal position when yourelease it.

3 Check that the throttlecontrol and throttle lockmove freely and that thereturn springs workproperly.

4 Start the saw and applyfull throttle. Release thethrottle control and checkthat the chain stops andremains stationary. If thechain rotates when thethrottle is on idle settingyou should check thecarburettor idleadjustment. See thesection on ”Maintenance”.

3 Chain catcher

Check that the CHAINCATCHER is notdamaged and is firmlyattached to the body ofthe saw.

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7 MufflerNever use a chain sawthat has a faulty muffler.

Regularly check that themuffler is securelyattached to the chain saw.

If the muffler on your sawis fitted with a sparkarrestor mesh this mustbe cleaned regularly. Ablocked mesh will causethe engine to overheatand may lead to seriousdamage.

Never use a muffler ifthe spark arrestor meshis missing or defective.

NEVER USE A CHAIN SAW WITH FAULTYSAFETY EQUIPMENT. CARRY OUT THECHECKS AND MAINTENANCE MEASURESDESCRIBED IN THIS SECTION. IF YOURCHAIN SAW FAILS ANY OF THESE CHECKSCONTACT YOUR SERVICE AGENT TO GET ITREPAIRED.

CUTTING EQUIPMENTThis section describes how to choose and maintain your cuttingequipment in order to:• Reduce the risk of kickback.• Reduce the risk of the chain breaking or jumping.• Obtain maximum cutting performance.• Extend the life of cutting equipment.

The 5 basic rules

1 Only use cuttingequipmentrecommended by us!See the ”Technical data”section.

2 Keep the chain cuttingteeth properlysharpened! Follow ourinstructions and use therecommended filegauge. A damaged orbadly sharpened chainincreases the risk ofaccidents.

3 Maintain the correctraker clearance! Followour instructions anduse the recommendedraker gauge. Too large aclearance increases therisk of kickback.

4 Keep the chain properlytesioned! If the chain isslack it is more likely tojump off and lead toincreased wear on thebar, chain and drivesprocket.

5 Keep cutting equipmentwell lubricated andproperly maintained!A poorly lubricated chainis more likely to break andlead to increased wear onthe bar, chain and drivesprocket.

SAFETY INSTRUCTIONS

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SAFETY INSTRUCTIONSC Some terms that describe the bar and chainWhen the cutting equipment supplied with your saw becomesworn or damaged you will need to replace it. Use only the typeof bar and chain recommended by us. See the ”Technical data”section to find out which equipment is recommended for yoursaw.

Bar

• LENGTH (inches/cm)

• NUMBER OF TEETH ONBAR TIP SPROCKET (T).Small number = small tipradius = low-kickback

• CHAIN PITCH (inches)The spacing between thedrive links of the chain mustmatch the spacing of theteeth on the bar tip sprocketand drive sprocket.

• NUMBER OF DRIVE LINKSThe number of drive links isdetermined by the length ofthe bar, the chain pitch andthe number of teeth on thebar tip sprocket.

• BAR GROOVE WIDTH(inches/mm)The groove in the bar mustmatch the width of the chaindrive links.

• SAW CHAIN OIL HOLEAND HOLE FOR CHAINTENSIONERThe bar must be matched tothe chain saw design.

Saw chain

• SAW CHAIN PITCH(=PITCH) (inches)

• DRIVE LINK WIDTH (mm/inches)

• NUMBER OF DRIVE LINKS

• LEVEL OF KICKBACKREDUCTIONThe level of kickbackreduction offered by a chainis indicated by its modelnumber.See the ”Technical data”section to find the modelnumbers of chains that arerecommended for use withyour saw.

1 Cutting equipment designed to minimisekickback

Faulty cutting equipment or the wrongcombination of bar and chain increases therisk of kickback. Use only the bar and chaincombinations recommended in the ”Technicaldata” section.

The only way to avoid kickback is to make sure that the kick-back zone of the bar never touches anything.By using cutting equipment with “built-in” kickback protectionand keeping the chain sharp and well-maintained you canreduce the effects of kickback.

A BarThe smaller the tip radius thesmaller the kickback zone andthe lower the chance ofkickback.

B Saw chainA saw chain is made up of a number of links, which areavailable in standard and low-kickback versions.

None Standard Low-kickback

CUTTING LINK

DRIVE LINK

SIDE LINK

Combining these links in different ways gives different degreesof kickback reduction. In terms of kickback reduction alone, fourdifferent types of link are available.

Kickback reduction Cutting link Drive link Side link

LOW

STANDARD

HIGH

EXTRA HIGH

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SAFETY INSTRUCTIONS2 Sharpening your chain and adjusting

raker clearance

The risk of kickback is increased with a badlysharpened chain!

A General information on sharpening cutting teeth• Never use a blunt chain. When the chain is blunt you have to

exert more pressure to force the bar through the wood andthe cuttings will be very small. If the chain is very blunt it willnot produce any cuttings at all, just wood powder.

• A sharp chain eats its waythrough the wood andproduces long, thickcuttings.

• The cutting part of the chainis called the CUTTING LINKand this consists of aCUTTING TOOTH (A) andthe RAKER LIP (B). Thecutting depth is determinedby the difference in heightbetween the two.

• When you sharpen a cutting tooth there are five importantfactors to remember.

FILING ANGLE

CUTTING ANGLE

FILE POSITION

ROUND FILE DIAMETER

FILE DEPTH

See the ”Technical data” section for information aboutsharpening your saw chain.

It is very difficult to sharpen achain correctly without theright equipment. Werecommend you use a filegauge. This will help youobtain the maximum kickbackreduction and cuttingperformance from your chain.

The following faults will increase the risk ofkickback considerably.

• FILE ANGLE TOOLARGE

• CUTTING ANGLETOO SMALL

• FILE DIAMETERTOO SMALL

B Sharpening cuttingteeth

To sharpen cutting teeth youwill need a ROUND FILE anda FILE GAUGE. See the”Technical data” section forinformation on the size of fileand gauge that arerecommended for your sawchain.

1 Check that the chain iscorrectly tensioned. Aslack chain is difficult tosharpen correctly.

2 Always file cutting teethfrom the inside face,reducing the pressure onthe return stroke.

File all the teeth on oneside first, then turn thesaw over and file theteeth on the other side.

3 File all the teeth to thesame length. When thelength of the cutting teethis reduced to 4 mm(0,16") the chain is wornout and should bereplaced.

BA

15

min 4 mm (0,16")

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C General advice on setting raker clearance

• When you sharpen thecutting teeth you reduce theRAKER CLEARANCE(cutting depth). To maintaincutting performance youmust file back the rakerteeth to the recommendedheight.

See the ”Technical data”section to find the rakerclearance for your sawchain.

• On a low-kickback cuttinglink the front edge of theraker lip is rounded. It isvery important that youmaintain this radius or bevelwhen you adjust the rakerclearance.

• We recommend the use of araker gauge to achieve thecorrect clearance and bevelon the raker lip.

The risk of kickback is increased if the rakerclearance is too large!

SAFETY INSTRUCTIONS D Setting the raker clearance

• Before setting the raker clearance the cutting teeth should benewly sharpened.We recommend that you adjust the raker clearance everythird time you sharpen the chain. NOTE! Thisrecommendation assumes that the length of the cutting teethis not reduced excessively.

• To adjust the rakerclearance you will need aFLAT FILE and a RAKERGAUGE.

• Place the gauge over theraker lip.

• Place the file over the partof the lip that protrudesthrough the gauge and fileoff the excess. Theclearance is correct whenyou no longer feel anyresistance as you draw thefile over the gauge.

3 Tensioning the chain

• The more you use a chain the longer it becomes. It istherefore important to adjust the chain regularly to take up theslack.

• Check the chain tension every time you refuel.NOTE! A new saw chain has a running-in period during whichyou should check the tension more frequently.

• Tension the chain as tightlyas possible, but not so tightthat you cannot pull it roundfreely by hand.

A slack chain may jump off and cause seriousor even fatal injury.

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1 Undo the bar nuts thathold the clutch cover andchain brake, using thecombination spanner.Then tighten the nuts byhand as tight as you can.

2 Raise the tip of the barand stretch the chain bytightening the chaintensioning screw usingthe combination spanner.Tighten the chain until itnot hang slack on theunderside of the bar.

3 Use the combinationspanner to tighten the barnuts while lifting the tip ofthe bar at the same time.Check that you can pullthe chain round freely byhand and that it is notslack on the bottom of thebar.

The position of the chain tensioning screw varies frommodel to model. See the” What is what” section to find outwhere it is on your saw.

SAFETY INSTRUCTIONS4 Lubricating cutting equipment

Poor lubrication of cutting equipment maycause the chain to snap and lead to serious,even fatal injuries.

Prolonged inhalation of exhaust gases fromthe engine, chain lubrication oil mist and/orsaw dust can be unhealthy.

A Chain oil• Chainsaw chain oil must demonstrate good adhesion to the

chain and also maintain its flow caracteristics regardless ofwhether it is warm summer or cold winter weather.

• As a chainsaw manufacturer we have developed an optimalchain oil which, with its vegetable oil base, is alsobiodegradable. We recommend the use of our own oil forboth maximum chain life and to minimise environmentaldamage.

• If our own chain oil is not available, standard chain oil isrecommended.

• In areas where oil specifically for lubrication of saw chains isunavailable, ordinary EP 90 transmission oil may be used.

• Never use waste oil!This is dangerous for yourself, the saw and the environment.

B Filling with chain oil• All our chain saws have an

automatic chain lubricationsystem. On some modelsthe oil flow is alsoadjustable.

• The sizes of the chain oiltank and fuel tank havebeen chosen so that thesaw will run out of fuelbefore running out of oil.This means that you shouldnever run with a dry chain.

However, this safety featurerequires that you use theright sort of chain oil (if theoil is too thin it will run outbefore the fuel), and thatyou adjust the carburettoras recommended (a weakmixture may mean that thefuel lasts longer than theoil). You should also use therecommended cuttingequipment (a bar that is toolong will use more chain oil).The above conditions alsoapply to models with anadjustable oil pump.

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C Checking chain lubrication

• Check the chain lubricationeach time you refuel.

Aim the tip of the saw at alight coloured surface about20 cm away. After 1 minuterunning at 3/4 throttle youshould see a distinct line ofoil on the light surface.

If the chain lubrication is not working:

1 Check that the oil channelin the bar is notobstructed. Clean ifnecessary.

2 Check that the groove inthe edge of the bar isclean. Clean if necessary.

3 Check that the bar tipsprocket turns freely andthat the lubricating hole inthe tip is not blocked.Clean and lubricate ifnecessary.

If the chain lubricationsystem is still not workingafter carrying out theabove measures youshould contact yourservice agent.

D Lubricating the bar tip sprocket

• Lubricate the bar tipsprocket each time yourefuel. Use the specialgrease gun and a goodquality bearing grease.

SAFETY INSTRUCTIONSE Lubricating the clutch drum bearing

• Between the engine driveshaft and the clutch drum isa needle bearing that mustbe lubricated daily. Use thespecially designed greasegun and a good qualitybearing grease.

F Checking wear on cutting equipmentSaw chain

Check the saw chain daily for:• Visible cracks in rivets and

links.• Whether the chain is stiff.• Whether rivets and links are

badly worn.

We recommend youcompare the existing chainwith a new chain to decidehow badly it is worn.

When the length of thecutting teeth has worn downto only 4 mm the chain mustbe replaced.

G Chain drive sprocket

The clutch drum is fitted with one of the following drivesprockets:

A SPUR (integral drivesprocket)

B RING (replaceable)

Regularly check thedegree of wear on thedrive sprocket. Replace ifwear is excessive.

Replace the drivesprocket whenever youreplace the chain.

A

B

min 4 mm (0,16")

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H Bar

Check regularly:

• Whether there are burrs onthe edges of the bar.Remove these with a file ifnecessary.

• Whether the groove in thebar has become badly worn.Replace the bar ifnecessary.

• Whether the tip of the bar isuneven or badly worn. If ahollow forms on one side ofthe bar tip this is due to aslack chain.

• To prolong the life of the baryou should turn it over daily.

MOST CHAIN SAW ACCIDENTS HAPPENWHEN THE CHAIN TOUCHES THE OPERA-TOR.

• WEAR PERSONAL PROTECTIVE EQUIPMENT(see the section on ”Chain saw safetyequipment”).

• DO NOT TACKLE ANY JOB YOU ARE UNSURE OF(see the section on ”Personal protectiveequipment”, ”How to avoid kickback”, ”Generalworking instructions” and ”Cutting equipment”).

• AVOID SITUATIONS WHERE THERE IS A RISK OFKICKBACK (see the section on ”Personalprotective equipment”).

• USE THE RECOMMENDED PROTECTIVEEQUIPMENT AND CHECK ITS CONDITION (seesection on ”General working instructions”).

• CHECK THAT ALL SAFETY FUNCTIONS AREWORKING (see section on ”General workinginstructions” and ”General safety precautions”).

SAFETY INSTRUCTIONSHOW TO AVOID KICKBACK

Kickback can happen very suddenly andviolently; kicking the saw, bar and chain backat the user. If this happens when the chain ismoving it can cause very serious, even fatalinjuries. It is vital you understand what causeskickback and that you can avoid it by takingcare and using the right working technique.

What is kickback?The word kickback is used todescribe the sudden reactionthat happens when the upperquadrant of the tip of the bar(known as the “kickback zone”)touches an object and thesaw is kicked backwards.

Kickback always occurs inthe cutting plane of the saw.Normally the saw and bar arethrown backwards andupwards towards the user.However the saw may movein a different directiondepending on the way it wasbeing used when the kickbackzone of the bar touched theobject.

Kickback only occurs if thekickback zone of the bartouches an object.

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7 Take great care when youcut with the top edge ofthe bar, i.e. when cuttingfrom the underside of theobject. This is known ascutting on the pushstroke. The chain tries topush the saw backtowards the user.

Unless the user resiststhis pushing force there isa risk that the saw willmove so far backwardsthat only the kickbackzone of the bar is incontact with the tree. Thiswill cause kickback.

Cutting with the bottomedge of the bar, i.e. fromthe top of the objectdownwards, is known ascutting on the pull stroke.

In this case the saw pullsitself towards the tree andthe front edge of the sawprovides a natural restwhen cutting. Cutting onthe pull stroke gives youbetter control over thesaw and the position ofthe kickback zone.

8 Follow the instructions on sharpening and maintaining yourbar and chain. When you replace the bar and chain useonly combinations that are recommended by us. See thesections on ”Cutting equipment” and ”Technical data”.

The risk of kickback is increased if you usethe wrong cutting equipment or a chain that isnot sharpened correctly. The wrongcombination of bar and chain can increase therisk of kickback!

General rules1 If you understand what kickback is and how it happens then

you can reduce or eliminate the element of surprise. Bybeing prepared you reduce the risk. Kickback is usuallyquite mild, but it can sometimes be very sudden andviolent.

2 Always hold the sawfirmly with your right handon the rear handle andyour left hand on the fronthandle.

Wrap your fingers andthumb around the hand-les. You should use thisgrip whether you areright-handed or left-handed. This gripminimises the effect ofkickback and lets youkeep the saw undercontrol.

Do not let go of thehandles!

3 Most kickback accidentshappen during limbing.Make sure you arestanding firmly and thatthere is nothing in the waythat might make you tripor lose your balance.

Lack of concentration canlead to kickback if thekickback zone of the baraccidentally touches abranch, nearby tree orsome other object.

4 Never use the saw aboveshoulder height and trynot to cut with the tip ofthe bar.

Never use the saw one-handed!

5 You must have a steadystance in order to havefull control over the chainsaw. Never work standingon a ladder, in a tree orwhere you do not havefirm ground to stand on.

6 Always use a fast cuttingspeed, i.e. full throttle.

SAFETY INSTRUCTIONS

18 – English

Never start a chain saw unless the bar, chain and all covers arefitted correctly.

The chain brake must beengaged when the chain sawis started. See the instructionsunder the heading Start.Never air drop start the chainsaw. This method is extremelydangerous, as it is easy tolose control of the chain saw.See the instructions under theheading Start.

SAFETY INSTRUCTIONSGENERAL SAFETY PRECAUTIONS1 Chain saws are designed solely for cutting wood. The only

cutting equipment that can be used with this chain saw arethe combinations of bars and chains recommended in the”Technical data” section.

2 Never use a chain saw ifyou are tired, if you havedrunk alcohol, or if youare taking medication thataffects your vision, yourjudgement or your co-ordination.

7 FUEL SAFETY(Refuelling, fuel mixture, storage.)

Long term inhalation of the engine's exhaustfumes, chain oil mist and dust from sawdustcan represent a health risk.

Fuel and fuel vapour are highly inflammable.Take care when handling fuel and chain oil.Keep away from naked flames and do notbreathe in fuel vapour.

• Never start a chain sawunless the bar, chain andclutch cover are fittedcorrectly. (See section on”Assembly”).

• Never start a chain sawindoors. Exhaust fumes canbe dangerous.

• Before starting the sawmake sure there are nopeople or animals nearbywho might be put at risk.

• Place the saw on theground and hold the rearhandle down with your rightfoot. Grasp the front handlefirmly using your left hand.Make sure the chain saw issteady and the chain is nottouching the ground. Thengrasp the starter handlewith your right hand and pullthe starter cord. Nevertwist the starter cordaround your hand.

6 STARTING

3 Always wear suitable protective clothing. See the sectionon ”Personal protective equipment”.

4 Never use a chain saw that has been modified in any wayfrom its original specification.

5a Never use a chain sawthat is faulty. Carry outthe regular checks,maintenance and serviceroutines described in thismanual. Somemaintenance and servicemeasures must be carriedout by trained specialists.See the section on”Maintenance”.

b Before use

1 Check that the chainbrake works correctly andis not damaged. See theinstructions under theheading Checking thechain brake.

2 Check that the rear righthand guard is notdamaged.

3 Check that the throttlelock works correctly andis not damaged.

4 Check that the start andstop switch workscorrectly and is notdamaged.

5 Check that all handles are free of oil.

6 Check that the anti vibration system works and is notdamaged.

7 Check that the muffler is securely attached and notdamaged.

8 Check that all parts of the chain saw are tightened correctlyand that they are not damaged or missing.

9 Check that the chain catcher is in place and not damaged.

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WARNING!Running an engine in a confined or badlyventilated area can result in death due toasphyxiation or carbon monoxide poisoning.

English – 19

• Never try to refuel the sawwhile it is running.

• Make sure there is plenty ofventilation when refuellingor mixing fuel (2-strokemixture).

• Move the saw at least 3 mfrom the refuelling pointbefore starting it.

• Never start the chainsaw:a) If you have spilt fuel or

chain oil on the saw.Wipe off the spill andallow remaining fuel toevaporate.

b) If you spill fuel or chainoil on yourself or yourclothes. Change yourclothes.

c) If there is a fuel leak.Check regularly forleaks from theFUEL CAP and FUELLINES.

• Always store the chain sawand fuel away from anysources of sparks or nakedflames, e.g. machines,electric motors, relays,switches, boilers, etc.

• Always store fuel in an approved container designed for that purpose.

• For longer periods of storage or for transport of the saw, thefuel and chain oil tanks should be emptied. Ask where youcan dispose of waste fuel and chain oil at your local petrolstation.

8 Never use any accessories other than those recommendedin this manual. See the sections on ”Cutting equipment”

1 Basic safety rules1 Look around you:

• to make sure there are nopeople, animals or otherobjects nearby that mightaffect your work.

• to make sure that none ofthe above might come withinreach of your saw or beinjured by falling trees.

Follow the instructions above, but do not use a chain saw in asituation where you cannot call for help in case of an accident.

2 Do not use the saw in bad weather, such as dense fog,heavy rain, strong wind, intense cold, etc. Working in coldweather is tiring and often brings added risks, such as icyground, unpredictable felling direction, etc.

3 Take great care when removing small branches and avoidcutting bushes (i.e. cutting many small branches at thesame time). Small branches can be grabbed by the chainand thrown back at you, causing serious injury.

5 Take the utmost carewhen cutting throughbranches or logs that arein tension. A log or branchthat is in tension cansuddenly spring back intoits natural position beforeor after you cut it. If youstand on the wrong sideor start cutting in thewrong place it may strikeyou or your chain saw.This could make you losecontrol and cause aserious accident.

SAFETY INSTRUCTIONS

4 Check the area aroundyou for possible obstaclessuch as roots, rocks,branches, ditches, etc., incase you have to movesuddenly. Take great carewhen working on slopingground.

Important1 Before using a chain saw you must understand the effects of

kickback and what causes it. (See the section on ”How toavoid kickback”.)

2 Before using a saw you must understand the differencebetween sawing with the top and bottom edges of the bar.(See the section on ”How to avoid kickback”.)

GENERAL WORKING INSTRUCTIONS

This section describes basic safety rules forusing a chain saw. This information is never asubstitute for professional skills andexperience. If you get into a situation whereyou feel unsafe, stop and seek expert advice.Contact your chain saw dealer, service agentor an experienced chain saw user. Do notattempt any task that you feel unsure of!

Min. 3 m(10 ft)

The risk of accident is increased if you usethe wrong cutting equipment or a chain that isnot sharpened correctly. Using the wrongcombination of bar and chain can increasethe risk of accidents!

20 – English

General• Always use full throttle when cutting!

• Reduce the speed to idle after every cut (running theengine for too long at full throttle without any load can lead toserious engine damage).

• Cutting from above = Cutting on the pull stroke.

• Cutting from below = Cutting on the push stroke.

See the section on ”How to avoid kickback” to find out whycutting on the push stroke increases the risk of kickback.

Terms:Cutting = General term for cutting through wood.Limbing = Cutting limbs off a felled tree.Splitting = When the object you are cutting breaks off

before the cut is complete.

There are five importantfactors you shouldconsider before making acut:

1 Make sure the bar will notjam in the cut.

2 Make sure the log will notsplit.

SAFETY INSTRUCTIONS3 Make sure the chain will

not strike the ground orany other object during orafter cutting.

4 Is there a risk of kick-back?

5 Do the conditions andsurrounding terrain affectyour safety whenworking?

Cutting1 The log is lying on the

ground. There is little riskof the chain jamming orthe log splitting. Howeverthere is a risk that thechain will touch theground when you finishthe cut.

Cut all the way throughthe log from above. Trynot to touch the ground asyou finish the cut.Maintain full throttle butbe prepared in case thechain snatches.

A If it is possible to turnthe log you should stopcutting about 2/3 of theway through.

B Turn the log and finishthe cut from theopposite side.

The following instructions describe how to handle most types ofsituation that you will be faced with when using a chain saw.

If the chain jams in the cut:STOP THE ENGINE! Don’t try to pull the sawfree. If you do you may damage the chainwhen the saw suddenly breaks free. Use alever to open up the cut and free the bar.

Two factors decide whether the chain will jam or the log willsplit. The first is how the log is supported and the second iswhether it is in tension.

In most cases you can avoid these problems by cutting in twostages; from the top and from the bottom of the log. You needto support the log so that it will not trap the chain or split duringcutting.

Never use a chain saw by holding it with onehand. A chain saw is not safely controlledwith one hand; you can cut yourself. Alwayshave a secure, firm grip around the handleswith both hands.

7 Never put a chain sawdown while the engine isrunning unless you haveit in clear view and thechain brake is on. Switchthe engine off beforeleaving your chain saw forany length of time.

6 Before moving your chainsaw switch off the engineand lock the chain usingthe chain brake. Carry thesaw with the bar andchain pointing backwards.Fit a guard to the barbefore carrying the sawany distance.

2 Basic cutting technique

English – 21

SAFETY INSTRUCTIONS2 The log is supported at one

end. There is a high riskthat it will split.

A Start by cutting frombelow (about 1/3 of theway through).

B Finish by cutting fromabove so that the twocuts meet.

3 The log is supported at bothends. There is a high riskthat the chain will jam.

A Start by cutting fromabove (about 1/3 of theway through).

B Finish by cutting frombelow so that the twocuts meet.

LimbingWhen limbing thick branchesyou should use the sameapproach as for cutting.Cut difficult branches piece bypiece.

1 2

3

3 Tree felling technique

It takes a lot of experience to fell a tree.Inexperienced users of chain saws should notfell trees. NEVER ATTEMPT A TASK YOU AREUNSURE OF.

A Safe distanceThe safe distance between a tree that is to be felled andanyone else working nearby is at least 21/2 tree lengths.Make sure that no-one else is in this “risk zone” before or duringfelling.

B Felling directionThe aim is to fell the tree in the best possible position forsubsequent limbing and cross-cutting. You want it to fall onground where you can move about safely.

The main point to avoid isletting the tree fall ontoanother tree. It can be bothdifficult and dangerous toremove a tree in such aposition (see point 4 in thissection).Once you have decided whichway you want the tree to fallyou must judge which way thetree would fall naturally.

Several factors affect this:

Lean of the tree

Bend

Wind direction

Arrangement of branches

Weight of snow

You may find you are forced to let the tree fall in its naturaldirection because it is impossible or dangerous to try to make itfall in the direction you first intended.

Another very important factor, which does not affect the fellingdirection but does affect your safety, is to make sure the treehas no damaged or dead branches that might break off and hityou during felling.

During critical felling operations, hearingprotectors should be lifted immediately whensawing is completed so that sounds andwarning signals can be heard.

22 – English

SAFETY INSTRUCTIONSC Clearing the trunk and preparing your retreat

Remove any branches thatare in the way. To do this it isbest to work from the topdown and keep the trunkbetween you and the chainsaw. Never limb aboveshoulder height.

Remove any undergrowthfrom the base of the tree andcheck the area for obstacles(stones, branches, holes, etc.)so that you have a clear pathof retreat when the tree startsto fall. Your path of retreatshould be roughly 135degrees behind the intendedfelling direction.

D FellingFelling is done using three cuts. First you make theDIRECTIONAL CUTS, which consist of the TOP CUT and theBOTTOM CUT; followed by the FELLING CUT. By placingthese cuts correctly you can control the felling direction veryaccurately.

DIRECTIONAL CUTTo make the DIRECTIONALCUT you begin with the TOPCUT. Stand to the right of thetree and cut downwards at anangle.

Next make the BOTTOM CUTso that it finishes at the end ofthe TOP CUT.

The directional cut should run1/4 of the diameter throughthe trunk and the anglebetween the TOP CUT andBOTTOM CUT should be 45°.

The line where the two cutsmeet is called theDIRECTIONAL CUT LINE.This line should be perfectlyhorizontal and at right angles(90°) to the chosen fellingdirection.

FELLING CUTThe felling cut is made from the opposite side of the tree and itmust be perfectly horizontal. Stand on the left side of the treeand cut with the bottom edge of the bar.

Make the FELLING CUTabout 3-5 cm (1.5-2 inches)above the flat section of theDIRECTIONAL CUT.

Set the spike bumper (if one isfitted) in behind the breakingstrip. Use full throttle andbring the bar and chain slowlyinto the tree. Make sure thetree does not start to move inthe opposite direction to yourintended felling direction.Drive a WEDGE or BREA-KING BAR into the cut assoon as it is deep enough.

Finish the FELLING CUTparallel with theDIRECTIONAL CUT LINE sothat the distance betweenthem is at least at least 1/10of the trunk diameter. Theuncut section of the trunk iscalled the BREAKING STRIP.

The BREAKING STRIP act ashinges that control the fellingdirection of the falling tree.

All control over the fellingdirection is lost if the BREA-KING STRIP is too narrow orif the directional cut and fellingcut are badly placed.

When the felling cut anddirectional cut are completethe tree should start to fallunder its own weight or withthe aid of a FELLING WEDGEor BREAKING BAR.

English – 23

We recommend that you usea bar that is longer than thediameter of the tree, so thatyou can make the FELLINGCUT and DIRECTIONAL CUTwith single cutting stokes.(See ”Technical data” to findout which lengths of bar arerecommended for your saw).

There are methods for fellingtrees with a diameter largerthan the bar length. Howeverthese methods involve a muchgreater risk that the kickbackzone of the bar will come intocontact with the tree.

UNLESS YOU HAVE SPECIAL TRAINING WEADVISE YOU NOT TO FELL TREES WITH ADIAMETER LARGER THAN THE BAR LENGTHOF YOUR SAW!

E Limbing

MOST KICKBACK ACCIDENTS HAPPENDURING LIMBING!PAY CLOSE ATTENTIONTO THE POSITION OF THE KICKBACK ZONEOF THE BAR WHEN YOU ARE LIMBINGBRANCHES THAT ARE IN TENSION!

Make sure there are noobstacles in your way. Workon the left side of the trunk.Work close to the saw formaximum control. If possible,let the weight of the saw reston the trunk.

Keep the tree between youand the saw as you movealong the trunk.

F Cutting the trunk into logsSee chapter ”General working instructions” point 2 ”Basiccutting technique”.

4 Freeing a tree that has fallen badly = highaccident risk

A Freeing a “Trapped tree”The safest method is to use a winch.A Tractor-mounted B Portable

B Cutting trees and branches that are in tensionPreparations:

a) Work out which way the tree or branch will move if releasedand where the natural “BREAKING POINT” is (i.e. the placeit would break if it was bent even more).

b) Decide which is the SAFEST way to release the tensionand whether YOU are able to do it safely. In complicatedsituations the only safe method is to put aside your chainsaw and use a winch.

General advice:

a) Position yourself so thatyou will be clear of thetree or branch when itsprings free.

b) Make one or more cuts ator near the BREAKINGPOINT. Make as manycuts of sufficient depth asnecessary to reduce thetension and make the treeor branch break at theBREAKING POINT.

Never cut straightthrough a tree or branchthat is IS in tension!

SAFETY INSTRUCTIONS

24 – English

WHAT IS WHAT?

What is what?1. Cylinder cover.

2. Front handle.

3. Front hand guard.

4. Starter cover.

5. Chain oil tank.

6. Starter handle.

7. Adjuster screw, carburettor.

8. Choke control/Start throttle lock.

9. Rear handle.

10. Stop switch. Ignition on/off switch.

11. Fuel tank.

12. Muffler.

13. Bar tip sprocket.

14. Saw chain.

15. Saw bar.

16. Bumper.

17. Chain catcher. Catches chain if it jumps or breaks.

18. Clutch cover.

19. Right hand guard. Protects right hand if chain breaks orjumps.

20. Throttle control.

21. Throttle lock. Prevents accidental operation of throttlecontrol.

22. Switch for heated handles.

23. Combination spanner.

24. Chain tensioning screw.

25. Operator´s manual.

26. Bar guard.

27. Decompression valve

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1314

151617

1819

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Jonsered 2054 TURBO

JonseredHuskvarna, SWEDEN

XXXXXXXXXXX

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J O N S E R E D S E R V I C E

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Mounting guide bar and chain

Always wear gloves, when working with thechain, in order to protect your hands frominjury.

Check that the chain brake isin disengaged position bymoving the front hand guardtowards the front handle.

Take off the bar nuts andremove the clutch cover. Takeoff the transportation ring (A).

ASSEMBLY

Fit the bar over the bar bolts.Place the bar in its rearmostposition. Place the chain overthe drive sprocket and in thegroove on the bar. Begin onthe top side of the bar. Makesure that the edges on thecutting links are facing forwardon the top side of the bar.

Fit the clutch cover and locatethe chain adjuster pin in thehole on the bar. Check thatthe drive links of the chain fitcorrectly on the drive sprocketand that the chain is in thegroove on the bar. Tighten thebar nuts finger tight.Tension the chain by usingthe combination wrench. Turnthe chain adjuster screwclockwise. The chain shouldbe tensioned until it fits snuglyon the underside of the bar.

Hold up the tip of the bar andtighten the chain. The chain iscorrectly tensioned whenthere is no slack on theunderside of the bar, but it canstill be turned easily by hand.Hold up the bar tip and tightenthe bar nuts with thecombination wrench.

When fitting a new chain, thechain tension has to bechecked frequently until thechain is run-in. Check thechain tension regularly. Acorrectly tensioned chaingives good cuttingperformance and long lifetime.

Fitting a spike bumper

To fit a spike bumper –contact your service agent.

26 – English

Fuelmix

Always provide for good ventilation whenhandling fuel.!

IMPORTANT! The chain saw is equipped with a two-strokeengine and must always been run using a mixture of petrol andtwo-stroke engine oil. It is important to accurately measure theamount of oil to be mixed to ensure that the correct mixture isobtained. When mixing small amounts of fuel, even smallinaccuracies can drastically affect the ratio of the mixture.

Petrol• Use good quality unleaded

or leaded petrol.• The lowest octane

recommended is 90.• If you run the engine on a

lower octane grade than 90so-called, knocking canoccur. This gives rise to ahigh engine temperature,which can result in seriousengine damage.

• When working withcontinuous high revs (e.g.delimbing) a higher octanegrade is recommended.

Two-stroke oil• For the best results use JONSERED two-stroke oil, which is

especially developed for chain saws. Mixing ratio 1:50 (2%).

• If JONSERED two-stroke oil is not available, you may useanother two-stroke oil of good quality that is intended for aircooled engines. Contact your dealer when selecting an oil.Mixing ratio 1:33 (3%)-1:25 (4%).

• Never use two-stroke oil intended for water cooled outboardmotors, so-called, outboard oil.

• Never use oil intended for four-stroke engines.

5101520

2%(1:50)0,100,200,300,40

3%(1:33)0,150,300,450,60

4%(1:25)0,200,400,600,80

GasolinBenzin

EssenceGasolina

Lit.

Oil • ÖlHuile • Aceite

Lit.

12 1/2

5

2%(1:50)2 1/26 1/212 7/8

3%(1:33)3 3/49 3/419 1/4

4%(1:25)5 1/812 7/825 3/4

USgallon

USfl. oz.

FUEL HANDLINGMixing• Always mix the petrol and

oil in a clean containerintended for fuel.

• Always start by filling halfthe amount of the petrol tobe used. Then add theentire amount of oil. Mix(shake) the fuel mixture.Add the remaining amountof petrol.

• Mix (shake) the fuel mixturethoroughly before filling thesaw’s fuel tank.

• Do not mix more than max.one month’s supply of fuel.

• If the saw is not used forsome time the fuel tankshould be emptied andcleaned.

The following applies to saws with catalyticconverterPetrolAlways use high grade unleaded petrol (minimum 95 ROZ).Leaded petrol will destroy the catalytic converter and it will nolonger serve its purpose.Two-stroke oilFor best results and performance use Jonsered two-stroke oil,which is specially formulated for chain saws. Mixture 1:50 (2%).

For additional information about fuels, see above.

!

WARNING!The catalytic converter muffler gets very hotduring and after use. This also applies duringidling. Be aware of the fire hazard, especiallywhen handling the saw near flammablesubstances or vapours.

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FUEL HANDLING

!

Chain oil• The chain lubrication

system is automatic. Alwaysuse special chain oil withgood adhesivecharacteristics.

• In countries where nospecial chain oil is available,transmission oil EP 90 canbe used.

• Never use waste oil. Thisresults in damage to the oilpump, the bar and thechain.

• It is important to use oil ofthe right viscosity accordingto the air temperature.

• In temperatures below 0oC(32oF) some oils becometoo viscous. This canoverload the oil pump andresult in damage to the oilpump components.

• Contact your servicingdealer when choosing chainoil.

Fuelling

Taking the following precautions, will lessenthe risk of fire.

• Do not smoke or place warm objects in the vicinity ofthe fuel.

• Always shut off the engine before refuelling.• Slowly open the fuel cap, when filling fuel, so that

possible overpressure is slowly released.• Tighten the fuel cap carefully after fuelling.• Always move the saw from the fuelling area before

starting.

The oil pumpThe chain is lubricated by an automatic oil pump. The pumpdoes not normally require any maintenance, provided that cleanchain oil (of special type) is used, and that no dirt is allowed toget into the tank during filling.

The flow of oil to the chain can be regulated by means of anadjuster screw as indicated in the illustration, using ascrewdriver or combination key. For maximum flow, turn thescrew in a clockwise direction as far as it will go.

The oil pump is adjusted at the factory to supply a normal flowof oil to the chain. The settings should be such that the saw'sfuel and oil tanks run dry at the same time.

!

WARNING!The catalytic converter muffler gets very hotduring and after use. This also applies duringidling. Be aware of the fire hazard, especiallywhen handling the saw near flammablesubstances or vapours.

Clean around the fuel cap.Clean the fuel and chain oiltanks regularly. The fuel filtershould be changed at leastonce a year. Contamination inthe fuel tanks causesmalfunction. Make sure thefuel is well mixed by shakingthe container before fuelling.The volume of chain oil andfuel tanks are adjusted toeach other. Therefore, alwaysfill chain oil and fuel at thesame time.

Min. 3 m(10 ft)

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START AND STOPStart and stop

WARNING!

• Never start a chain saw unless the bar, chain and allcovers are fitted correctly. Otherwise the clutch cancome loose and cause personal injuries.

• Always move the saw away from the fueling areabefore starting.

• Place the saw on clear ground and make sure that thechain is not contacting anything. Also, make sure thatyou have a secure footing.

• Keep people and animals well away from the workingarea.

StopThe engine is stopped byswitching off the ignition.(Move the ignition switch tostopposition.)

!

WARNING!The catalytic converter muffler gets very hotduring and after use. This also applies duringidling. Be aware of the fire hazard, especiallywhen handling the saw near flammablesubstances or vapours.

Cold engineSTARTING:The chain brake must beengaged when the chain sawis started. Activate the brakeby moving the front handguard forwards.

IGNITION:Move the ignition switch tostartposition.

CHOKE:Set the choke control in chokeposition.

FAST IDLE:Combined choke/fast idle isreceived when the choke ismoved to choke position.

If the saw is fitted with adecompression valve:Press the valve to reduce thepressure in the cylinder andmake starting easier. Alwaysuse the decompression valvewhen starting the saw. Oncethe saw has started the valvewill automatically return to itsoriginal setting.

Warm engineUse the same procedure asfor starting cold engine butwithout choke. Fast idle isrecived by first set the chokecontrol in choke position, andthen back again.

StartGrip the front handle with yourleft hand and hold the sawdown by putting your right footin the rear handle. Pull thestarter handle with your righthand and pull out the startercord slowly until the starterpawls engage. Then pullsharply. Never twist thestarter cord around yourhand.

As the chain brake is stillengaged the speed of theengine must be set to idling assoon as possible, this isachieved by quicklydisengaging the throttle lock.This prevents unnecessarywear to the clutch, clutchdrum and brake band.

Push in the choke controlimmediately when the engineignites and make repeatedstarting attemps. When theengine starts, rapidly give fullthrottle. Then the throttle latchwill disengage.

CAUTION! Do not release thestarter handle from fully pulledout position as this can causedamage on the saw.

Reactivate the chain brake bypushing the front hand guardback towards the front handle.The chain saw is now readyfor use.

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!

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CarburettorFunctioning, Basic setting, Final setting

WARNING! Do not start the saw without the bar,chain and clutch cover (chain brake) assembled.If you do, the clutch might come loose andcause severe injuries.

Operation• The carburettor governs the engine speed via the throttle. Air/fuel

are mixed in the carburettor. The air/fuel mixture is adjustable.To take advantage of the saw’s maximum output the setting mustbe correct.

• Adjusting the carburettor means the engine is adapted to localoperating conditions, e.g. climate, altitude, petrol and the type of2-stroke oil used.

• The satisfactory operation of a catalytic converter depends,among other factors, on the correct adjustment of thecarburettor. Follow carefully the instructions below, using atachometer to check engine speed.

• The carburettor has threeadjustment possibilities:L = Low speed jet.H = High speed jet.T = Adjustment screw foridling.

• The fuel quantity required in relation to the air flow, provided byopening the throttle, is adjusted by the L and H-jets. If they arescrewed clockwise the air/fuel ratio becomes leaner (less fuel)and if they are turned anti-clockwise the ratio becomes richer(more fuel). A leaner mixture gives a higher engine speed and aricher mixture give a lower engine speed.

• The T screw regulates the idling speed. If the screw T is turnedclockwise this gives a higher idling speed; anti-clockwise a loweridling speed.

WARNING! The catalytic converter muffler getsvery hot during and after use. This also appliesduring idling. Be aware of the fire hazard,especially when handling the saw nearflammable substances or vapours.

Basic setting and running inThe carburettor is adjusted to a basic setting when the saw istested at the factory. The basic setting is: H = 1 1/4 turnsrespective L = 1 1/4 turns. To provide the engine’s componentswith a good level of lubrication (running in) the carburettorshould be set for a richer fuel mixture for the first 3-4 hours ofoperating. To obtain this adjust the overspeed 600-700 rpmunder the recommended max. overspeed.If you do not have the possibility to check the overspeed using atachometer the H-jet should not be set for a leaner mixture thanthat stated for the basic setting.The recommended overspeed should not be exceeded.NOTE! If the chain rotates while idling the T screw should beadjusted anti-clockwise until it stops.

Fine adjustment• When the saw has been ”run-in” the carburettor should be finely

adjusted. The fine adjustment should be carried out byqualified person. First adjust the L-jet, then the idling screw Tand then the H-jet. The following engine speed applies:Max. overspeed 2054: 13 000 rpm, 2055: 14 000 rpm.Idling speed 2 500 rpm.

Changing the type of fuelFine tuning may be required if the chain saw, after changing thetype of fuel, performs differently with regard to starting, accele-ration, max. speed, etc.

MAINTENANCEConditions• Before any adjustments are made the air filter should be clean

and the cylinder cowling fitted. Adjusting the carburettor while adirty air filter is in use will result in a leaner mixture when the filteris finally cleaned. This can give rise to serious engine damage.

• Carefully turn the L and H-jets clockwise to the bottom. Now turn thejets one turn anti-clockwise. The carburettor is now set to H = 1 andL = 1.

• Now start the saw according to the starting instructions and run itwarm for 10 minutes. NOTE! If the chain rotates the T screwshould be turned anti-clockwise until the chain stops.

• Place the saw on a flat surface so that the bar points away fromyou and so that the bar and chain do not come into contact withthe surface or other objects.

Low speed needle LTry to find the highest idlingspeed, turning the low speedneedle L clockwise respectivelycounter-clockwise. When thehighest speed has been found,turn the low speed needle L 1/4turn counter-clockwise. NOTE!If the chain rotates in the idlingposition, turn the idling speedscrew counter-clockwise untilthe chain stops.

Final setting of the idling speed TAdjust the idling speed with the screw T. If it is necessary to re-adjust, first turn the idle speed adjusting screw T clockwise, untilthe chain starts to rotate. Then turn, counter-clockwise until thechain stops. A correctly adjusted idle speed setting occurs whenthe engine runs smoothly in every position. It should also be goodmargin to the rpm when the chain starts to rotate.

Contact your servicing dealer, if the idle speedsetting cannot be adjusted so that the chainstops. Do not use the saw until it has beenproperly adjusted or repaired.

High speed needle HThe high speed needle Hinfluences the power of the saw.A too lean adjusted high speedneedle H (high speed needle Hclosed too much) gives overrevsand damages the engine. Letthe saw run at full speed forabout 10 seconds. Thereafter,turn the high speed needle H 1/4turn counter-clockwise.Let the saw run again at full speed for about 10 seconds and notethe difference of the enginesound. Repeat this procedure with thehigh speed needle H turned 1/4 turn more counter-clockwise. Thesaw has now been tested with the following settings: H=±0, H=+1/4,H=+1/2 from basic adjustment. At full speed the engine hasproduced a different sound for each setting. The high speed needleH is correctly set when the saw ”4-cycles” a little. If the saw”whistles” the setting is too lean. If there is too much exhaust gas atthe same time as the saw ”4-cycles” much, the setting is too rich.Turn the high speed needle H until the setting sounds correct.NOTE! For optimum setting of the carburettor, contact a qualifiedservicing dealer who has a revolution counter at his disposal.The maximum speed recommended must not be exceeded.

Correctly adjusted carburettorA correctly adjusted carburettor means that the saw accelerateswithout hesitation and the saw 4-cycles a little at max speed.Furthermore, the chain must not rotate at idling. A too leanadjusted low speed needle L may cause starting difficulties andbad acceleration. A too lean adjusted high speed needle H giveslower power = less capacity, bad acceleration and/or damage tothe engine. A too rich adjustment of the two speed needles L andH gives acceleration problems or too low working speed.

L

+ 1/4

H

30 – English

!

Tensioning the recoil spring• Lift the starter cord up in

the notch on the starterpulley and turn the starterpulley 2 turns clockwise.

NOTE! Check that thestarter pulley can beturned at least half a turn,when the starter cord isentirely pulled out.

Changing the broken recoil spring• Lift the starter pulley. (See,

Changing a broken or wornstarter cord). The recoilspring is disassembled fromthe starter device, with itsinside facing down. Tap thestarter lightly against aworking bench or similar.

• Put a new recoil spring inthe right position. If thespring pops out whenassembling, it should bemounted again, out and intowards the centre.

• Lubricate the recoil springwith thin oil. Assemble thestarter pulley, and tensionthe recoil spring.

Starter device assembly• Assemble the starter device, by pulling the starter cord out

first, then place the starter against the crankcase. Then slowlyrelease the starter cord so that the pulley engages with thepawls.

• Assemble and tighten the screws, which hold the starter.

Starter device

WARNING!

• When the recoil spring is assembled in the starterhousing, it is in tensioned position and can whentreated carelessly, pop out and cause injuries.

• Always be careful, when changing the recoil spring orthe starter cord. Always wear safety goggles for eyeprotection.

MAINTENANCE

Changing a broken or wornstarter cord

• Loosen the screws, thathold the starter deviceagainst the crankcase andremove the starter device.

• Pull out the cord approx. 30cm and lift it up into thenotch in the pulley. Zero-setthe recoil spring by lettingthe pulley rotate slowlybackwards. Undo the screwin the centre of the pulleyand remove the pulley.

• Insert and fasten a newstarter cord in the pulley.Wind approx. 3 turns of thestarter cord on to the pulley.Assemble the starter pulleyagainst the recoil spring, sothe end of the springengages to the pulley. Fitthe screw in the centre ofthe pulley. Carry the startercord through the hole in thestarter housing and thestarter handle. Make a knoton the starter cord.

English – 31

Air filterThe air filter must be regularly cleaned from dust and dirt inorder to avoid:• Carburettor malfunctions• Starting problems• Engine power reduction• Unnecessary wear on

the engine parts• Abnormal fuel consumption

Clean the air filter daily ormore often if the air isexceptionally dusty in theworking area.• Disassemble the air filter by

removing the cylinder coverand unscrew the filter.When reassembling, makesure that the filter is tightagainst the filter holder.Clean the filter by brushingor shaking it.

• A more thorough cleaningof the filter is obtained bywashing it in water andsoap.

An air filter, which is used forsome time, cannot be cleanedcompletely. Therefore it mustbe replaced by a new one,with regular intervals.IMPORTANT! A damaged airfilter must always be replaced.

Muffler

The muffler is designed inorder to reduce the noise leveland to direct the exhaustgases away from the operator.The exhaust gases are hotand can contain sparks, whichmay cause fire if directedagainst dry and combustiblematerial. Some mufflers areequipped with a specialscreen. If your saw has thistype of muffler, you shouldclean the screen at least oncea week. This is done with awire brush.

MAINTENANCE

Spark plug

The spark plug condition is influenced by:• An incorrect carburettor setting.• Wrong fuel mixture (too much oil in the petrol).• A dirty air filter.These factors cause deposits on the spark plug electrodes,which may result in malfunction and starting difficulties.

If the engine is low onpower, difficult to start orruns poorly at idling speed,always check the spark plugfirst. If the spark plug is dirty,clean it and check theelectrode gap. Readjust ifnecessary. The correct gap is0,5 mm (0,020"). The sparkplug should be replaced afterabout a month in operation orearlier if the electrodes arebadly eroded.

IMPORTANT! Always use therecommended spark plugtype. An incorrect spark plugcan severely damage thepiston/cylinder.

0,5 mm

CAUTION! The screen must be replaced, if damaged. Thesaw will be overheated, if the screen is clogged. Thisresults in damage on the cylinder and the piston. Never usea saw with a clogged or defective muffler.

!

A muffler fitted with a catalytic converter greatly reduces theconcentration of hydrocarbons (HC), oxides of nitrogen (NO)and aldehydes emitted with exhaust gases. However, it doesnot cut down carbon monoxide (CO), which you cannot smell!Consequently, never work in an enclosed or badly ventilatedarea. Good air circulation should always prevail when workingin snowy hollows, ravines or in confined conditions.

WARNING!The catalytic converter muffler gets very hotduring and after use. This also applies duringidling. Be aware of the fire hazard, especiallywhen handling the saw near flammablesubstances or vapours.

All bolts are specially made to withstand high temperatures. Theuse of any bolts other than genuine Jonsered replacementsmay result in damage to the muffler and engine. All bolts mustbe checked and tightened as necessary. They should first bechecked after 10 hours running time. NOTE! Bolts (A), whichhold the muffler to the cylinder, are located behind the supportplate (B).

WARNING!The coating on the inside and outside of thecatalytic converter unit (C) may be poisonous.Wear gloves whenever you carry out servicework on the catalytic converter.

!

B C A

32 – English

MAINTENANCECooling system

To obtain the lowest possible running temperature the saw isequipped with a coolingsystem.The cooling systemconsists of:

1. Air intake on the starterunit.

2. Air guide plate.

3. Fan blades on theflywheel.

4. Cooling fins on thecylinder.

5. Cylinder cowling(supplies cold air overthe cylinder).

Clean the cooling system with a brush once a week, more oftenin demanding conditions. A dirty or blocked cooling systemresults in the saw overheating which causes damage topiston and cylinder.

Winter useDuring winter time, powder snow and cold weather can causerunning problems, such as:• Too low engine temperature.

• Icing on the air filter and carburettor.

Therefore some special measures are required:

• Partly reduce the air inlet of the starter and by doing thatincrease the engine temperature.

• Preheat the intake air to the carburettor by removing thespecial plug between the cylinder and the carburettor space.

Electrically heated handles or carburettor

Electrically heated handles orcarburetor receive theircurrent from an alternator builtinto the flywheel. The currentis controlled by an ON/OFF/ON switch.

Centrifugal cleaning ”Turbo”

Centrifugal cleaning meansthe following:All air to the carburettor iscarried through the starter.Dirt and dust is centrifugedaway by the cooling fan.

IMPORTANT! In order tokeep the function of thecentrifugal cleaning, acontinous maintenance andcare must be made.

• Clean the air intake to thestarter, the fan wings of theflywheel, the space aroundthe flywheel, inlet pipe andcarburettor space.

Needle bearing maintenance

The clutch drum is equippedwith one of the following chainsprockets:

• Spur sprocket (A) (the chainsprocket is welded on thedrum)

• Rim sprocket (B)(exchangeable)

Both versions have built-inneedle bearing at the driveshaft, whitch has to begreased regularly (once aweek).

NOTE! Use only highquality bearing grease.

A

B

IMPORTANT! Any maintenance other than that described inthis manual must be carried out by your servicing dealer.

English – 33

Daily maintenance:1. Check the throttle triggerfor smooth operation. If anybinding occurs, or if enginefails to return to idle, the sawshould be taken to yourdealer, before it is used again.Also, be sure that the triggercannot be pulled until thethrottle trigger lockout isdepressed.

2. Clean the chain brake andcheck its function according tothe instructions. Make surethat the chain catcher isundamaged. Otherwisereplace it immediately.

3. Clean or replace the airfilter as necessary. Check fordamage or holes.

4. The bar should be turneddaily for more even wear.Check the lubrication hole inthe bar, to be sure it is notclogged. Clean the bargroove, if the bar has asprocket tip, this should belubricated.

5. Check the function of theoiler to be sure the bar andchain receive properlubrication.

6. Sharpen the chain andcheck its tension andcondition. Check the drivesprocket for wear. Replace ifnecessary.

7. Check the starter andstarter cord for wear ordamage. Clean the air intakeslots on the starter housing.

8. Check for any loose nutsand screws and retighten ifnecessary.

9. Test the stop switch to besure it shuts off the engine.

Below you will find some general maintenance instructions.If you have more questions, contact your servicing dealer.

Weekly maintenance:

1. Check that the AVelements are not soft ortorn.

2. Lubricate the clutch drumbearing.

3. File off burrs, if any, onthe sides of the bar.

4. Clean the spark plug andcheck the gap.The correct gap is 0,5 mm(0,020 inch).

5. Check the starter and therecoil spring. Clean thefins on the flywheel.

6. Clean the cooling fins onthe cylinder.

7. Clean or change thescreen in the muffler.

8. Clean the carburettorbody and air box.

Monthly maintenance:

1. Check the brake band onthe chain brake for wear.

2. Check the clutch centre,clutch drum and clutchspring for wear.

3. Clean the outside of thecarburettor.

4. Check the fuel filter.Change if necessary.

5. Flush the inside off thefuel tank with petrol.

6. Flush the inside of the oiltank with petrol.

7. Check all cables andconnections.

MAINTENANCE

0,5 mm4

3

8

5

1

2

6

7

1

5

6

8

7

9

2

4

3

5

6

7

3

4

1

2

34 – English

EngineCylinder volume, cm3

Cylinder bore, mmStroke, mmIdle speed, rpmRecommended max. speed,unloaded, rpmPower, kW

Ignition systemManufactureType of ignition systemSpark plug

Electrode gap, mm

Fuel and lubrication systemManufacturerCarburettor typeFuel capacity, litreOil pump capacity at 8500 rpm,ml/minOil capacity, litreType of oil pump

WeightWithout bar and chain, kg

2054

53,246322 500

13 0002,6/9 300

ElectroluxETChampionRCJ 7Y0,5

WalbroHDA 1190,56

4,25–8,50,38Automatic

5,2

2055

53,246322 500

14 8002,8/9 600CAT 2,7/9 600

ElectroluxETChampionRCJ 7Y0,5

WalbroHDA 1190,56

4,25–8,50,38Automatic

5,2 / CAT 5,5

Noise emissions(see note 1)Sound power level, measureddB(A)Sound power level, guaranteedLWA dB(A)

Sound levels(see note 2)Equivalent sound pressure levelat operator’s ear, measuredaccording to relevant internatio-nal standards, dB(A)

Vibration levels(see note 3)Front handle m/s2

Rear handle m/s2

Chain/barStandard bar length,inches/cmRecommended bar lengths,inches/cmUsable cutting lengthinches/cmChain speed at max.power, m/sec

Pitch, inchesThickness of drive link, mmNumber of teeth on drivesprocket

TECHNICAL DATA2055

111

112

101 / CAT 102

3,36,2

15"/38

13"/33–18"/48

12"/30–17"/43

18,5/7t

0,325"1,3

7

2054

110

112

100

3,38,6

15"/38

13"/33–18"/48

12"/30–17"/43

18,0/7t

0,325"1,3

7

Bar and chain combinationsThe following combinations are CE approved.

Bar ChainLength, Pitch, Max.inches inches tip radius

13 0,325 10T Jonsered S2515 0,325 10T Jonsered S2516 0,325 10T Jonsered S2518 0,325 10T Jonsered S25

13 0,325 10T Jonsered S3015 0,325 10T Jonsered S3016 0,325 10T Jonsered S3018 0,325 10T Jonsered S30

15 3/8 10T Jonsered S4216 3/8 10T Jonsered S4218 3/8 10T Jonsered S42

L

15

Type Inch Inch/mm Inch/mm Degree Degree Degree Inch/mm Inch/mm: dl

S25 0,325" 0,058"/1,5 3/16"/4,8 85° 30° 10° 0,025"/0,65 13"/33:56 15/38:6416/41:66 18/46:72

S30 0,325" 0,050"/1,3 3/16"/4,8 85° 30° 10° 0,025"/0,65 13"/33:56 15/38:6416/41:66 18/46:72

S42 3/8" 0,058"/1,5 7/32"/5,5 60° 25° 0° 0,025"/0,65 15"/38:56 16/41:6018/46:68

Note 1: Noise emissions in the environment measured as soundpower (LWA) in conformity with EC directive 2000/14/EC.

Note 2: Equivalent sound pressure level, according to ISO7182, is calculated as the time-weighted energy total for soundpressure levels under various working conditions with thefollowing time distribution: 1/3 idling, 1/3 max. load, 1/3 max.speed.

Note 3: Equivalent vibration level, according to ISO 7505, iscalculated as the time-weighted energy total for vibration levelsunder various working conditions with the following timedistribution: 1/3 idling, 1/3 max. load, 1/3 max. speed.

´*xs6¶68¨

English – 35

TECHNICAL DATA

EC-declaration of conformity (Applies to Europe only)Jonsered, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declares under sole responsibility that the chain sawsJonsered 2054 Turbo and 2055 Turbo/2055W Turbo from 2002's serial numbers and onwards (the year is clearly statedin plain text on the type plate with subsequent serial number), are in conformity with the requirements of the COUNCIL'SDIRECTIVES:- of June 22, 1998 ”relating to machinery” 98/37/EC, annex IIA.- of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.- of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.For information relating to noise emissions, see the chapter Technical data.The following standards have been applied: EN292-2, CISPR 12:1997, EN608.

Notified body: 0363 Deutsche Prüfstelle fur Land- und Forsttechnik, Weissensteinstr 70/72, DE-34131 Kassel, Germany,has carried out EC type examination in accordance with the machinery directive's (98/37/EC) article 8, point 2c.The certificates for EC type examination in accordance with annex VI, have the numbers: K-EG 212 – 2054 Turbo,K-EG 201 – 2055 Turbo/2055W Turbo.

In addition, SMP, Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has certified conformitywith annex V of the Council's Directive of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.The certificates have the numbers: 01/161/025 – 2054 Turbo, 01/161/026 – 2055 Turbo/2055W Turbo.

The supplied chain saw conforms to the example that underwent EC type examination.

Huskvarna January 3, 2002

Bo Andréasson, Development manager

108 88 32-26

´*xs6¶68¨2002W03