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STIHL 017 018

1. lt d N Tt lo lt Q m vt Pull off the spark plug boot Unscrew and dry off the spark plug Set the Master Control lever to t Crank the engine several times with the starter to clear the combustion chamber Refit the spark plug and connect the spark plug boot reassemble all other parts Set Master Control lever to warm start even if engine is cold Now start the engine Fuel tank run until dry and then refueled Pull starter rope several times until fuel line is primed 017 018 During Break in Period A factory new machine should not be run at high revs full throttle off load for the first three tank fillings This avoids unnecessary high loads during the break in period As all moving parts have to bed in during the break in period the frictional resistances in the engine are greater during this period The engine develops its maximum power after about 5 to 15 tank fillings Important Always disengage the chain brake before opening the throttle Running the engine at higher revs with the chain brake engaged saw chain at a standstill will quickly damage the engine and chain drive clutch chain brake 017 018 During Operation Check chain tension frequently A new chain has to be retensioned more often than one that has been in use for some time Cold chain Tension is correct when chain fits snugly against the underside of the bar and
2. 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 burn marks appear on the wood Keep the chain at proper tension Tighten all nuts bolts and screws except the carburetor adjustment screws after each use EN wia In order for the chain brake on your STIHL chainsaw to properly perform its function of reducing the risk of kickback and other injuries it must be properly maintained Like an automobile brake a chainsaw chain brake incurs wear each time it is engaged The amount of wear will vary depending upon usage conditions under which the saw is used and other factors Excessive wear will reduce the effectiveness of the chain brake and can render it inoperable For the proper and effective operation of the chain brake the brake band and clutch drum must be kept free of dirt grease and other foreign matter which may reduce friction of the band on the drum For these reasons each STIHL chain saw should be returned to trained personnel such as your STIHL servicing dealer for periodic inspection and servicing of the brake system according to the following schedule Heavy usage every three months Moderate usage twice a year Occasional usage annually The chainsaw should also be returned immediately for maintenance whenever the brake system cannot be thoroughly cleaned or there is a change in
3. 49 2 Warranty Period Any warranted part which is not scheduled for replacement as required maintenance or which is scheduled only for regular inspection to the effect of repair or replace as necessary will be warranted for the warranty period Any warranted part which is scheduled for replacement as required maintenance will be warranted for the period of time up to the first scheduled replacement point for that part 3 Diagnosis You as the owner shall not be charged for diagnostic labor which leads to the determination that a warranted part is defective However if you claim warranty for a component and the machine is tested as non defective Stihl will charge you for the cost of the emission test Mechanical diagnostic work is performed at an authorized Stihl servicing dealer Emission test may be performed either at Stihl or at any independent test laboratory 4 Consequential Damages Stihl is liable for damages to other engine components caused by the failure of a warranted part still under warranty D What is not Covered 1 Failures caused by abuse neglect or improper maintenance 2 Add on or modified parts non genuine parts 50 The use of add on or modified parts can be grounds for disallowing a warranty claim The engine manufacturer is not liable to cover failures of warranted parts caused by the use of add on or modified parts E How to File a Claim Bring the product to any authorized Sti
4. clockwise until the tensioning nut 2 butts against left end of housing slot 017 018 bar and the drive link tangs are located in the bar groove Refit the sprocket cover and screw on the nuts only fingertight Now refer to chapter Tensioning the Saw Chain 25 Mounting the Bar and Chain Models with Quick Chain Tensioner 135BA003 KN You can run chains of different pitches Remove the tensioning gear 4 on this chainsaw depending on the and turn it over chain sprocket see Specifications Take out the screw 5 The chain pitch must match the guide bar In addition the drive link gauge must match the guide bar groove width 26 Pull out the hinged handle 1 of the wingnut so that it snaps into posi tion Turn the wingnut 2 counterclock wise until it hangs loose in the chain sprocket cover 3 Remove the sprocket cover 135BA004 KN 135BA005 KN 135BA006 KN 135BA007 KN Position the tensioning gear 6 against the guide bar 7 Fit and tighten down the screw 8 017 018 135BA008 KN Wear work gloves to protect hands Fit the chain start at the bar nose pay attention to position of tensio ning gear and the cutting edges Turn tensioning gear 9 clockwise up to the stop 017 018 135BA009 KN Disengage the chain brake Pull hand guard 10 toward the front handle Turn the guide bar so that t
5. should wear proper protective apparel Clothing must be sturdy and snug fitting but allow complete freedom of movement Avoid loose fitting jackets scarfs neckties jewelry flared or cuffed pants unconfined long hair or anything that could become entangled with the saw or brush Wear overalls or jeans with a reinforced cut retardant insert or cut retardant chaps Protect your hands with gloves when handling saw and saw chain Heavyduty nonslip gloves improve your grip and protect your hands Good footing is most important in chainsaw work Wear sturdy boots with nonslip soles Steel toed safety boots are recommended To reduce the risk of injury to your eyes never operate a chainsaw unless wearing goggles or properly fitted safety glasses with adequate top and side protection complying with your national standard Wear an approved safety hard hat to protect your head Chainsaw noise may damage your hearing Always wear sound barriers ear plugs or ear mufflers to protect your hearing Continual and regular users should have their hearing checked regularly ey THE SAW Parts of the chainsaw for illustrations and definitions of the parts see the chapter on Main Parts of Saw A Warning Never modify a chainsaw in any way Only attachments and parts supplied by STIHL or expressly approved by STIHL for use with the specific STIHL saw models are authorized Although certain unauthorize
6. structure decay snow load etc To re duce the risk of severe or fatal injury to yourself or others look for these condi tions prior to beginning the cut and be alert for a change in direction during fall 18 L i o lt a o ro Escape path First clear the tree base and work area from interfering limbs and brush and clean its lower portion with an ax Then establish two paths of escape B and remove all obstacles These paths should be generally opposite to the plan ned direction of the fall of the tree A and about at a 45 angle Place all tools and equipment a safe distance away from the tree but not on the escape paths a ee a a IX oho Buttress roots If the tree has large buttress roots cut into the largest buttress vertically first horizontally next and remove the resulting piece 001BA041 LA 001BA019 KN Gunning sight When making the felling notch use the gunning sight on the shroud and housing to check the required direction of fall Position the saw so that the gunning sight points exactly in the direction you want the tree to fall Conventional cut A felling notch determines the direction of the fall For a conventional cut Properly place felling notch perpendicular to the line of fall close to the ground Cut down at app 45 degree angle to a depth of about 1 5 to 1 4 of the trunk diameter Make second cut horizontal Re
7. the engine run for a while then switch engine off and recheck chain tension Proper chain tension is very important at all times Working Conditions Operate the chainsaw under good visibility and daylight conditions only Warning Your chainsaw produces poisonous exhaust fumes as 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 fatal injury from breathing toxic fumes never run the chainsaw indoors or in poorly ventilated locations Ensure proper venti lation when working in trenches or other confined areas A Warning Use of this product including sharpen ing the saw chain can generate dust mists and fumes containing chemicals known to cause respiratory disease can cer birth defects or other reproductive harm If you are unfamiliar with the risks associated with the particular dust mist or fume at issue consult your employer governmental agencies such as OSHA and NIOSH and other sources on hazar dous materials California and some other authorities for instance have pub lished lists of substances known to cause cancer 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 practices and follow the recommendations of OSHA NIOSH and occupational and trade associations When the inhalati
8. STIHL chainsaws Different models may have different parts and controls See the appropriate section of your Owner s Manual for a description of the controls and function of the parts of your model saw Safe use of a chainsaw involves 1 the operator 2 the saw 3 the use of the saw THE OPERATOR Physical Condition You must be in good physical condition and mental health and not under the influence of any substance drugs alcohol which might impair vision dexterity or judgment Do not operate a chainsaw when you are fatigued Be alert If you get tired while operating your chainsaw take a break Tiredness may result in loss of control Working with any chainsaw can be strenuous If you have any condition that might be aggravated by strenuous work check with your doctor before operating a chainsaw Teese Prolonged use of chainsaws or other machines exposing the operator to vibrations may produce whitefinger disease Raynaud s phenomenon or carpal tunnel syndrome These conditions reduce the hand s ability to feel and regulate temperature produce numb ness and burning sensations and may cause nerve and circulation damage and tissue necrosis All factors which contribute to whitefinger disease are not known but cold weather smoking and diseases or physical condi tions that affect blood vessels and blood transport as well as high vibration levels and long periods of exposure to vibration are mentio
9. V shaped supports on top of a sawhorse Never permit another person to hold the log Never hold the log with your leg or foot 001BA050 LA Logs under strain Risk of pinching Always start relieving cut 1 at compression side A Then make bucking cut 2 at tension side B If the saw pinches stop the engine and remove it from the log Only properly trained professionals should work in an area where the logs limbs and roots are tangled Working in blowdown areas is extremely hazardous Drag the logs into a clear area before cutting Pull out exposed and cleared logs first MAINTENANCE REPAIR AND STORING Maintenance replacement or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual However if you claim warranty for a component which has not been serviced or maintained pro perly or if nonapproved replacement parts were used STIHL may deny warranty Never operate a chainsaw that is damaged improperly adjusted or not completely or securely assembled Follow the maintenance and repair instructions in the appropriate section of your Owner s Manual especially those in the chapters Mounting the Bar and Chain Maintaining and Sharpening and Chain Brake TONENE Use only STIHL replacement parts for maintenance and repair Use of parts manufactured by others may cause serious or fatal injury Warni
10. allow other persons to be near the chainsaw when starting or cutting with the chainsaw Keep bystanders and animals out of the work area Do not start cutting until you have a clear work area secure footing and a planned retreat path from the falling tree Keep all parts of your body away from the saw chain when the engine is running Before you start the engine make sure that the saw chain is not contacting anything Carry the chainsaw with the engine stopped the guide bar and saw chain to the rear and the muffler away from your body 10 11 12 13 14 15 16 17 Continuation of Important Safety Precautions Do not operate a chainsaw that is damaged improperly adjusted or not completely and securely assembled Be sure that the saw chain stops moving when the throttle trigger is released Shut off the engine before setting the chainsaw down Use extreme caution when cutting small size brush and saplings because slender mate rial may catch the saw chain and be whipped toward you or pull you off balance When cutting a limb that is under tension be alert for springback so that you will not be struck when the tension in the wood fibers is released Keep the handles dry clean and free of oil or fuel mixture Operate the chainsaw only in well ventilated areas Do not operate a chainsaw ina tree unless you have been specifically trained to do so All chainsaw serv
11. angle requirements of ANSI B 175 1 1991 when the products are in their original condition Products with yellow decals or labels are for users with extraordinary cutting needs and experience and specialized training for dealing with kickback STIHL recommends the use of its green labeled reduced kickback bars green labeled low kickback chains and a STIHL Quickstop chain brake for both experienced and inexpe rienced chainsaw users Please ask your STIHL dealer to properly match your powerhead with the appro priate bar chain combinations to reduce the risk of kickback injury Green labeled bars and chains are recommended for all powerheads See your STIHL Bar and Chain Information leaflet for details Lisi Use of other non listed bar chain combi nations may increase kickback forces and increase the risk of kickback injury New bar chain combinations may be developed after publication of this litera ture which will in combination with certain powerheads comply with 5 12 of ANSI B 175 1 1991 Check with your STIHL dealer for such combinations Niina Reduced kickback bars and low kickback chains do not prevent kickback but they are designed to reduce the risk of kick back injury They are available from your STIHL dealer Aree Even if your saw is equipped with a Quickstop a reduced kickback bar and or low kickback chain this does not eliminate the risk of injury by kickback Therefore always observe a
12. can still be pulled along the bar by hand Retension if necessary see chapter Tensioning the Saw Chain Chain at operating temperature The chain stretches and begins to sag The drive links on the underside of the bar must not come out of the bar groove the chain may otherwise jump off the bar Retension the chain see chapter Tensioning the Saw Chain Always slacken off the chain again after finishing work The chain contracts as it cools down If itis not slackened off it may damage the crankshaft and bearings After a long period of full throttle operation Allow engine to run for a short while at idling speed so that engine heat can be dissipated by the flow of cooling air This helps protect engine mounted components ignition carburetor from thermal overload After Finishing Work Slacken off the chain if you have retensioned it at operating temperature during cutting work The chain contracts as it cools down If it is not slackened off it could damage the crankshaft and bearings Before storing your saw for a long period Drain and clean the fuel tank Run engine until carburetor is dry 37 Cleaning Air Filter 143BA022 KN Dirty air filters reduce engine power increase fuel consumption and make starting more difficult Clean the air filter when there is a noticeable loss of engine power Press down the interlock lever and set Master Control leve
13. flood and stall the engine The Master Control lever must be in warm start position to start a warm engine Also select this position if the engine has been running but is still cold The Master Control lever is locked and can only be moved to the run position 3 after squeezing the throttle trigger do not use force In the warm start position continue cranking after engine begins to fire As soon as the engine runs immediately blip the throttle trigger so that the Master Control lever moves to the run position 3 To shut down the engine Move the Master Control lever upward to STOP position D E 4 The stop contact should engage the contact spring this cuts off the ignition system Starting 143BA016 KN Only machines with easy start system Press in the button to open the decompression valve The valve closes automatically as soon as the engine begins to fire For this reason the button should be pressed in before each starting attempt 33 All versions 34 Observe safety precautions see section Safety Precautions Push hand guard forward 1 The chain is now locked Press down the interlock lever 2 and squeeze the throttle trigger at the same time and set the Master Control lever to For cold start For warm start even if engine has been running but is still cold 143BA017 KN 143BA018 KN 143
14. its operating characteristics For any maintenance please refer to the maintenance chart and to the warranty statement near the end of this manual Additionally the daily maintenance schedule for your chainsaw set forth in your STIHL Owner s Manual should be strictly followed Store chainsaw in a dry place and away from children Before storing for longer than a few days always empty the fuel tank see chapter Storing the Machine in this manual Mounting the Bar and Chain Models with Front Chain Tensioner Zz x st 9N O q lt a oO vt 143BA035 KN 143BA003 KN 143BA004 x re i z a ise yt Wear work gloves to protect hands Fit the guide bar over the studs 4 Fit the chain start at the bar nose so that the chain cutting edges on the top of the bar point toward the You can run chains of different pitches on this chainsaw depending on the chain sprocket see Specifications The chain pitch must match the guide bar In addition the drive link gauge must match the guide bar groove width disengage the chain brake Pull hand guard 3 toward the front handle bar nose Engage the peg of the tensioner slide in locating hole 5 place the chain over sprocket 6 at the same time Now turn tensioning screw 7 Unscrew nuts and take off cover clockwise until there is very little Turn tensioning screw 1 counter chain sag on the underside of the
15. operation of chain brake Before starting work Run engine at idle speed engage the chain brake push hand guard toward bar nose Accelerate up to full throttle for no more than 3 seconds the chain must not rotate The hand guard must be free of dirt and move freely Chain brake maintenance The chain brake is subject to normal wear and tear It must therefore be checked and serviced regularly by trained personnel e g STIHL dealer at the following intervals Full time professional users every 3 months Semi professional users every 6 months Occasional users every 12 months 017 018 Information Before You Start don t start yet The four positions of the Master Control lever To start the engine move the lever to the cold start position 1 do not use force If the Master Control lever is in the run position I 3 Press down the throttle trigger interlock and move the Master Control downward Cold Start position Choke shutter is closed throttle trigger is in starting throttle position This position is used to start a cold engine 017 018 Zz x O A O q lt Q t t As soon as engine begins to fire move the Master Control lever to Warm Start position X 2 Choke shutter is open throttle trigger is in starting throttle position If you leave the Master Control lever in the cold start position the combustion chamber will
16. saw without assistance For specific starting instructions see the appropriate section of the Owner s Manual Proper starting methods reduce the risk of injury Do not drop start This method is very dangerous because you may lose control of the saw There are two recommended methods for starting your chainsaw With the first method the chainsaw is started on the ground Make sure the chain brake is engaged see Chain Brake chapter in your Owner s Manual and place the chainsaw on firm ground or other solid surface in an open area Maintain good balance and secure footing Grip the front handlebar of the saw firmly with your left hand and press down For saws with a rear handle level with the ground put the toe of your right foot into the rear handle and press down With your right hand pull out the starter grip slowly until you feel a definite resistance and then give it a brisk strong pull 2 x D Es oO oO a The second recommended method for starting your chainsaw allows you to start the saw without placing it on the ground Make sure the chain brake is engaged grip the front handle of the chainsaw firmly with your left hand Keep your arm on the front handle in a locked straight position Hold the rear handle of the saw tightly between your legs just above the knees Maintain good balance and secure footing Pull the starting grip slowly with your right hand until you feel a definite resist
17. side of the cutting path of the chainsaw Oak oo N 001BA037 LA A Pull in Pull in occurs when the chain on the bottom of the bar is suddenly stopped when it is pinched caught or encounters a foreign object in the wood The reaction of the chain pulls the saw forward and may cause the operator to lose control Pull in frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood A Warning Use extreme caution when cutting small size brush and saplings which may easily catch the chain and pull you off balance To avoid pull in 1 Always start a cut with the chain rotating at full speed and the bumper spike in contact with the wood 2 Pull in may also be prevented by using wedges to open the kerf or cut 001BA038 LA B Pushback Pushback occurs when the chain on the top of the bar is suddenly stopped when itis pinched caught or encounters a foreign object in the wood The reaction of the chain drives the saw straight back toward the operator and may cause loss of saw control Pushback frequently occurs when the top of the bar is used for cutting To avoid pushback 1 Be alert to forces or situations that may cause material to pinch the top of the chain 2 Donotcut more than one log at a time 3 Do not twist the saw when withdrawing the bar from a plunge cut or
18. to stop the chain after activation or may not activate at all Warning Never run the chainsaw above idle speed for more than 3 seconds when the chain brake is engaged or the chain is pinched or otherwise caught in the cut Clutch slippage can cause excessive heat leading to severe damage of the motor housing clutch and oiler compo nent and may interfere with the operation of the chain brake If clutch slippage in excess of 3 seconds has occured allow the motor housing to cool before pro ceeding and check the operation of your chain brake as described in the chapter entitled Chain Brake Also make sure that the chain is not turning at idle speed see above Important Adjustments Low kickback saw chain and reduced kickback bars STIHL offers a variety of bars and chains STIHL reduced kickback bars and low kickback chains are designed to reduce the risk of kickback injury Other chains are designed to obtain higher cut ting efficiency or sharpening ease but may result in higher kickback tendency STIHL has developed a color code system to help you identify the STIHL reduced kickback bars and low kick back chains Cutting attachments with green warning decals or green labels on the packaging are designed to reduce the risk of kickback injury The matching of green decaled powerheads under 3 8 cubic inch displacement with green labeled bars and green labeled chains gives compliance with the computed kickback
19. work on a ladder or on any other insecure support Never use the saw above shoulder height AN inia Never work in a tree unless you have received specific professional training for such work are properly secured such as tackle and harness system or a lift bucket have both hands free for operating the chainsaw in a cramped environment and have taken proper precautions to avoid injury from falling limbs or branches 11 001BA082 KN Position the chainsaw in such a way that your 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 when reaching the end of a cut The pressure may cause the bar and rotating chain to pop out of the cut or kerf go out of control and strike the operator or some other object If the rotating chain strikes some other object a reactive force may cause the moving chain to strike the operator Reactive forces including kickback Warning Reactives forces may occur any time the chain is rotating Reactives forces can be dangerous In any chainsaw the 12 001BA093 LA powerful force used to cut wood can be reversed and work against the opera tor If the rotating chain is suddenly stopped by contact with any solid object like a log or branch or is pinched the reactive forces may occur instantly These reactive forces may result in loss of control which may in turn cause serious or fatal i
20. 9 If the octane number of the regular grade gasoline in your area is lower use premium unleaded fuel Fuel with a lower octane rating may result in preignition causing pinging which is accompanied by an increase in engine temperature This in turn increases the risk of piston seizure and damage to the engine The chemical composition of the fuel is also important Some fuel additives not only detrimentally affect elastomers carburetor diaphragms oil seals fuel lines etc but magnesium castings as well This could cause running problems or even damage the engine For this reason it is essential that you use only branded fuels Use only STIHL two stroke engine oil or equivalent branded two stroke air cooled engine oils with the classification TC for mixing We recommend STIHL 50 1 two stroke engine oil since it is specially formulated for use in STIHL engines Do not use BIA or TCW two stroke water cooled mix oils Take care when handling gasoline Avoid direct contact with the skin and avoid inhaling fuel vapour see Safety Precautions The canister should be kept tightly closed in order to avoid any moisture getting into the mixture The fuel tank and the canister in which fuel mix is stored should be cleaned from time to time Fuel mix ages Only mix sufficient fuel for a few days work not to exceed 3 months of storage Store in approved safety fuel canisters only When mixing pour oi
21. BA019 KN Place your saw on the ground Alternative method of starting make sure you have a firm footing Hold the rear handle tightly check that chain is not touching any between your legs just above the object or the ground knees bystanders must be well clear of Grip the front handle firmly with general work area of the saw your left hand your thumb should be under the Hold the saw firmly on the ground handle with your left hand on the front handle your thumb should be under the handle Put your right foot into the rear handle and press down 017 018 rA x g lt a a Y Pull the starter grip slowly with your right hand until you feel it engage then give the grip a brisk strong pull and push down the front handle at the same time Donot pull out starter rope more than 70 cm about 28 in it might otherwise break Donotlet the starter grip snap back guide it slowly into the housing so that the starter rope can rewind properly If engine is new pull starter grip several times to prime the fuel line 017 018 143BA021 KN When engine begins to fire Move Master Control lever 3 to x and continue cranking as soon as engine runs immediately blip the throttle trigger 4 the Master Control lever 3 will move to the run position 5 T and the engine settles down to idling speed As the chain brake is still engaged the engine must be returned to idlin
22. F NGK BPMR7 Aor Champion RCJ 6 Y Heat range 200 Electrode gap 0 5 mm 0 02 in Spark plug thread M 14x1 25 9 5 mm 0 37 in long 017 018 Fuel Oil System Carburetor All position diaphragm carburetor with integral fuel pump Air filter Felt mat Fuel tank capacity 0 25 0 53 US pt Fuel mix See chapter Fuel Mix Chain lubrication Fully automatic speed controlled rotary piston oil pump Oil tank capacity 0 15 I 0 32 US pt Weight without bar and chain 017 3 9 kg 8 60 Ibs 018 3 9 kg 8 60 Ibs Cutting Attachment Recommended cutting attachments for compliance with 5 12 of ANSI Standard B 175 1 1991 see page 12 of this Manual STIHL reduced kickback bar with green label for 3 8 Picco pitch Picco Micro Mini gauge 1 1 mm Picco Micro gauge 1 3 mm Rollomatic with sprocket nose 30 or 35 cm 12 or 14 in STIHL low kickback chain with green label for 3 8 Picco pitch 9 32 mm 3 8 Picco Micro Mini 61PMN 9 32 mm 3 8 Picco Micro1 63 PM1 Chain sprocket 6 tooth for 3 8 Picco pitch Since new bar chain combinations may be developed after publication of this Manual ask your STIHL dealer for the latest STIHL recommendations In order to comply with the kickback performance requirements of 5 12 of ANSI Standard B 175 1 1991 do not use replacement saw chain unless it has been designated as meeting the ANSI 5 12 requirements on this spe
23. STIHL recommends the use of reduced kickback bars and low kickback chains ANSI B 175 1 1991 chainsaw kickback standard Section 5 12 of ANSI standard B 175 1 1991 sets certain performance and design criteria related to chainsaw kickback To comply with section 5 12 of ANSI B 175 1 1991 a saws with a displacement of less than 3 8 cubic inches must in their original condition meet a 45 computer derived kickback angle when equipped with certain cutting attachments and must be equipped with at least two devices to reduce the risk of kickback injury such as a chain brake low kickback chain reduced kickback bar etc b saws with a displacement of 3 8 cubic inches and above must be equipped with at least one device designed to reduce the risk of kickback injury such as a chain brake low kickback chain reduced kickback bar etc The computer derived angles for saws below 3 8 cubic inch displacement are measured by applying a computer program to test results from a kickback test machine ANa The computer derived angles of 5 12 of ANSI B 175 1 1991 may bear no rela tionship to actual kickback bar rotation angles that may occur in real life cutting situations Compliance with 5 12 of ANSI B 175 1 1991 does not automatic ally mean that in a real life kickback the bar and chain will rotate at most 45 NTE In order for powerheads below 3 8 cubic inch displacement to com
24. STIL O17 O18 Instruction Manual Owner s Manual Assembling Safety Precautions Operating Instructions Maintenance SIO ORS So Made in Germany Warning To reduce risk of kickback injury use STIHL reduced kickback Read and follow all safety precautions bar and STIHL PMN Picco or PM 1 Picco chain depending in Owner s Manual improper use on sprocket pitch or other available low kickback components can cause serious or fatal injury Andreas Stihl 1993 Important Safety Precautions for Chain Saw Users A Kickback Safety Precautions take several steps to keep your 6 Follow manufacturer s cutting jobs free from accident or sharpening and maintenance Z N Warning injury instructions for the saw chain Kickback may occur when the nose or tip of the guide bar touches an object or when the wood closes in and pinches the saw chain in the cut Tip contact in some cases may cause a lightning fast reverse reaction kicking the guide bar up and back towards the operator Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator Either of these reactions may cause you to lose control of the saw which could result in serious personal injury Section 5 12 of ANSI B 175 1 1991 sets certain performance and design criteria related to chainsaw kickback STIHL has developed a color code system using green and yellow to help you select a power head ba
25. ainsaw is intended to be used with two hands Do not operate a chainsaw when you are fatigued Use safety footwear snug fitting clothing protective gloves and eye hearing and head protect ion devices continued on the back inside cover Contents Main Parts of the Saw Definitions Safety Precautions The Operator The Saw The Use of the Saw Maintenance Repair and Storing Mounting the Bar and Chain Models with Quick Chain Tensioner Tensioning the Saw Chain Checking Chain Tension Fuel Mix Fueling Chain Lubricant Filling Chain Oil Tank Checking Chain Lubrication Chain Brake Information Before You Start Starting During Break in Period Special equipment Printed on chlorine free paper 2000 Andreas Stihl AG amp Co Waiblingen 0458 143 3021 M5 CO PM Printed in USA 017 018 aOR BRWND 21 25 26 28 29 29 30 31 31 31 32 31 33 37 During Operation After Finishing Work Cleaning Air Filter Taking Care of Guide Bar Motormanagement Adjusting Carburetor Spark Arresting Screen in Muffler Checking Spark Plug Starter Rope Checking and Replacing Chain Sprocket Storing the Machine Maintaining and Sharpening Saw Chain Maintenance Chart Specifications Ordering Spare Parts Stihl Incorporated Limited Warranty Federal and California Emission Control Systems Utility Engines 37 37 38 38 39 39 40 41 41 42 42 43 46 47 48 49 This
26. ally Replace damaged broken or excessively worn buffers immediately since they may result in loss of control of the saw A sponginess in the feel of the saw increased vibration or increased bottoming during normal operation may indicate damage breakage or excessive wear Buffers should always be replaced in sets If you have any questions as to whether the buffers should be replaced consult your STIHL servicing dealer ANni Take extreme care in wet and freezing weather rain snow ice Put off the work when the weather is windy stormy or rainfall is heavy AN iania Avoid stumbling on obstacles such as stumps roots or rocks and watch out for holes or ditches Clear the area where you are working Be extremely cautious when working on slopes or uneven ground There is increased danger of slipping on freshly debarked logs ANa To reduce the risk of serious or fatal injury to the opera tor or bystanders never use the saw with one hand You cannot control reactive forces and you may lose control of the saw which can result in the skating or bouncing of the bar and chain along the limb or log Even for those compact saws designed for use in confined spaces one handed operation is dangerous because the operator may lose control Cutting Instructions Grip Always hold the saw firmly with both hands when the engine is running Place your left hand on front handle bar and your right ha
27. ance and then give it a brisk strong pull A Warning Be sure that the guide bar and chain are clear of you and all other obstructions and objects including the ground When the engine is started the engine speed with the starting throttle lock engaged will be fast enough for the clutch to engage the sprocket and if the chain brake is not activated turn the chain If the upper quadrant of the tip of the bar touches any object it may cause kick back to occur see section on reactive forces To reduce this risk always engage the chain brake before starting Never attempt to start the chainsaw when the guide bar is in a cut or kerf A Warning When you pull the starter grip do not wrap the starting rope around your hands Do not allow the grip to snap back but guide the starter rope slowly back to permit the rope to rewind properly Failure to follow this procedure may result in injury to hand or fingers and may damage the starter mechanism Important adjustments Warning To reduce the risk of personal injury from loss of control or contact with the running chain do not use a saw with incorrect idle adjustment At correct idle speed the chain should not rotate For directions to adjust idle speed see the appropriate section of your Owner s Manual If you cannot set the correct idle speed have your STIHL dealer check your saw and make proper adjustments or repairs After adjusting a chain start the saw let
28. chain lubrication If the chain is run dry the whole cutting attachment will be irretrievably damaged within a very short time Always check chain lubrication and oil level in tank before starting work Every new chain has to be broken in for about 2 to 3 minutes After breaking in chain check chain tension and adjust if necessary see section Checking Chain Tension 31 Chain Brake a XO 143BA011 KN Locking chain with chain brake in an emergency when starting at idling speed The chain is stopped and locked when the hand guard is pushed toward the bar nose by the left hand or when brake is activated by inertia in certain kickback situations 32 143BA012 KN Releasing the chain brake Pull the hand guard back toward the front handle Note Always disengage chain brake before accelerating engine and before starting cutting work The only exception to this rule is when you check operation of the chain brake High revs with the chain brake engaged chain locked will quickly damage the powerhead and chain drive clutch chain brake The chain brake is also activated by the inertia of the front hand guard if the kickback force of the saw is high enough The hand guard is accelerated toward the bar nose even if your left hand is not behind the hand guard e g during felling cut The chain brake will operate only if the hand guard has not been modified in any way Check
29. cific powerhead or has been designated as low kickback saw chain in accordance with the ANSI B 175 1 1991 standard See definition of low kickback chain on page 12 of this Manual 47 Ordering Spare Parts Please enter your saw model machine number as well as the part numbers of the guide bar saw chain and chain sprocket in the spaces provided This will make re ordering simpler The guide bar saw chain and chain sprocket are subject to normal wear and tear When purchasing these parts always quote the saw model the part numbers and names of the parts Model Machine number Guide bar part number Chain part number Sprocket part number For recommended STIHL reduced kickback cutting attachments see section Specifications of this Owner s Manual 48 Warranty claims following repairs can be accepted only if the repair has been performed by an authorized STIHL servicing dealer using original STIHL spare parts Original STIHL parts can be identified by the STIHL part number the logo and the STIHL parts symbol amp 2 The symbol may appear alone on small parts 017 018 STIHL Incorporated Limited Warranty Federal and California Emission Control Systems Utility Engines Your Warranty Rights and Obligations The California Air Resources Board and Andreas Stihl are pleased to explain the emissi
30. cycle engine depending on the fuel used the weather conditions and the venting system of the tank In order to reduce the risk of burns or other personal injury from escaping gas vapor and fumes remove the fuel filler cap on the STIHL product carefully so as to allow any pressure build up in the tank to release slowly Never remove fuel filler cap while engine is running Select bare ground for fueling and move at least 10 feet 3 m from fueling spot before starting the engine Wipe off any spilled fuel before starting your saw and check for leakage Z N warning Check for fuel leakage while refueling and during operation If fuel or oil leakage is found do not start or run the engine until leak is fixed and spilled fuel has been wiped away Take care not to get fuel on your clothing If this happens change your clothing immediately A Warning Unit vibrations can cause an improperly tightened fuel filler cap to loosen or come off and spill quantities of fuel In order to reduce the risk of fuel spillage and fire tighten fuel filler cap by hand with as much force as possible The screwdriver end of Er the STIHL combination wrench or other similar A tool can be used as an aid in tightening slotted fuel Starting filler caps The chain brake must be engaged when starting the saw A Warning Your chainsaw is a one person saw Do not allow other persons to be near the running chainsaw Start and operate your
31. d attachments are useable with the STIHL powerhead their use may in fact be extremely dangerous THE USE OF THE SAW Transporting the chainsaw AN Warina Always stop the engine before putting a chainsaw down or carrying it Carrying a chainsaw with the engine running is extremely dangerous Accidental acceleration of the engine can cause the chain to rotate During operation the powerhead muffler and the material around it reach extremely high temperatures Avoid touching the hot muffler you could receive serious burns By hand When carrying your saw by hand the engine must be stopped and the saw must be in the proper position Grip the front handle and place the muffler away from the body 3 N a 3 lt a gt le The chain guard scabbard should be over the chain and the guide bar which should point backwards When carrying your saw the bar should be behind you By vehicle When transporting in a vehicle keep chain and bar covered with the chain guard Properly secure your saw to prevent turnover fuel spillage and damage to the saw Preparation for the use of the saw Take off the chain guard and inspect for safety in operation For assembly follow the procedure described in the chapter Mounting the Bar and Chain of your Owner s Manual STIHL Oilomatic chain guide bar and sprocket must match each other in gauge and pitch Before replacing any bar and chain see the secti
32. e fumes and cause a fire Starter Rope The starter rope is subject to normal wear and tear To prolong its service life please observe the following points Do not pull out the rope more than 70 cm about 28 in it might otherwise break Donot let the starter grip snap back guide it slowly and vertically into the housing so that the starter rope can rewind properly Do not hold it sideways so that it rubs against the guide bush Always replace a damaged starter rope in good time or have it replaced by your STIHL dealer Replacing Starter Rope Rewind Spring Remove the shroud Unscrew the oil tank filler cap and drain the tank Unscrew the fuel tank filler cap and drain the tank Always keep chain oil and fuel mix in approved safety type canisters Remove the screws from the fan housing and hand guard Lift away the fan housing Tension the starter rope or rewind spring or replace as necessary 41 Checking and Replacing Chain Sprocket 143BA042 KN Replace the chain sprocket after using two Oilomatic chains or even sooner if the wear marks on the sprocket are deeper than approx 0 5mm 64 since this would reduce the life of the chain Check wear marks on teeth of spur sprockets You can use gauge 0000 893 4101 to check the depth of the wear marks on spur and rim sprockets It is best to use two chains in rotation with one sprocket Special accessory 42 Be
33. ermore the angles must be the same on all cutters If angles are uneven Chain will run roughly not in a straight line wear quickly and finally break 43 689BA025 KN As these requirements can be met only after sufficient and constant practice Use a file holder A file holder must be used for manual resharpening of Super chain The correct filing angle is marked on the file holder 85 70 fo 80 da 2 2 VN Ale gt For checking angles STIHL filing gauge see table A universal tool for checking the filing and side plate angles depth gauge setting and cutter length Also cleans the guide bar groove and oil inlet hole 44 File 689BA018 KN correctly 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 are usually enough Always file from the inside to the outside of the cutter The file only sharpens on the forward stroke lift the file off the cutter on the back stroke Hold the file horizontally for all chain types at right angle to side of guide bar and file according to the angles marked on the filing tool Avoid touching the tie straps and drive links with the file Rotate the file at regular intervals while fil
34. fore removing chain sprocket Remove chain sprocket cover chain and guide bar Disengage the chain brake Pull hand guard toward front handle Use a screwdriver to remove the E clip Pull washer spur sprocket and needle cage off the crankshaft Clean the crankshaft stub and needle cage and lubricate with STIHL grease tube 0781 120 1111 Reassemble with new spur sprocket After fitting the clutch drum rotate it about one half turn to engage oil pump drive Refit washer and E clip on the crankshaft Use only original STIHL chain sprockets to ensure correct operation of the chain brake Storing the Machine For periods of about 3 months or longer Drain and clean the fuel tank ina well ventilated area Run engine until carburetor is dry this helps prevent the carburetor diaphragms sticking together Remove the saw chain and guide bar clean them and protect with corrosion inhibiting oil Thoroughly clean the machine pay special attention to the cylinder fins and air filter If you use a biological chain and bar lubricant e g STIHL Bioplus completely fill the chain oil tank Store the machine in a dry and high or locked location out of the reach of children and other unauthorized persons 017 018 Maintaining and Sharpening Saw Chain Correctly sharpened chain A properly sharpened chain slices through wood effortlessly and requires very little feed pressure Do no
35. g speed immediately to avoid damage to the engine and chain drive clutch 143BA012 KN Pull the hand guard back toward the front handle The chain brake is now disengaged your saw is ready for operation Always disengage chain brake before accelerating engine and before starting cutting work High revs with the chain brake engaged chain locked will quickly damage the powerhead and chain drive clutch chain brake Observe safety precautions Always check operation of chain lubrication before starting work Shut down engine Move Master Control lever to 2 35 At very low outside temperatures Allow engine to warm up As soon as the engine runs Blip the throttle trigger to disengage it from starting throttle position Master Control lever will move to 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 36 143BA022 KN If engine doesn t start If you did not move the Master Control lever to the warm start position quickly enough after the engine began to fire the combustion chamber is flooded Press down the interlock lever and set the Master Control lever to cold start Turn the twist lock above the rear handle 90 counterclockwise and lift off the shroud vertically
36. gned to provide an optimum fuel air mixture under all operating conditions The maximum engine speed specified for machines with a conventional carburetor does not apply to this version No provision is made for adjustment of maximum engine speed On these machines it is only possible to correct the idling speed within narrow limits 017 018 x o A is lt a D Check the air filter and clean it if necessary Carefully screw the low speed screw L down onto its seat Now open it one turn counterclockwise standard setting L 1 Warm up the engine It is usually necessary to change the setting of the idle speed screw LA after every correction to the low speed screw L Turn screws only very slightly and carefully even minor changes have a noticeable effect on the engine s running behavior Engine stops while idling L screw must be one turn open Turn the idle speed screw LA clockwise until chain begins to run then back off the screw one quarter of a turn Chain runs when engine is idling L screw must be one turn open Turn the idle speed screw LA counterclockwise until chain stops running then turn screw another quarter turn in the same direction Erratic idling behaviour poor acceleration even though L screw in one turn open Idle setting is too lean Turn the low speed screw L counter clockwise until engine runs and accelerates smoothl
37. he tensioning gear is facing you Fit the chain over the sprocket 11 and slip the guide bar over the stud 12 the head of the rear collar stud must locate in the slot 135BA011 KN Make sure the drive link tangs engage the bar groove see arrow and then rotate tensioning gear counterclockwise up to the stop 27 135BA012 KN z N ro lt ra wo ise 28 Place sprocket cover in position engage guide lugs in recesses in engine housing and check that the teeth of the adjusting wheel and tensioning gear mesh If necessary turn the adjusting wheel 13 slightly until the sprocket cover can be pushed flush against the engine housing Pull out the hinged handle 14 of the wingnut so that it snaps into position Engage wingnut and tighten it down moderately Now refer to chapter Tensioning the Saw Chain Tensioning the Saw Chain Models with Front Chain Tensioner Retensioning during cutting work Turn off the engine Slacken the nuts Hold the bar nose up use screwdriver to turn the tensioning screw 1 clockwise until chain fits snugly against the underside of the bar Tighten down the nuts firmly A new chain has to be retensioned more often than one that has been in use for some time Check chain tension frequently see section During Operation Now refer to chapter Checking Chain Tension Tensioning the Sa
38. hl servicing dealer and present the signed warranty card F Where to get Warranty Service Warranty services or repairs will be provided at all authorized Stihl servicing dealers G Maintenance Replacement and Repair of Emission related Parts Any Stihl approved replacement part may be used in the performance of any warranty maintenance or repairs on emission related parts and will be provided without charge to the owner if the part is still under warranty H Emission Control Warranty Parts List The following parts are covered by this warranty if the maintenance procedures according to the instructions in this owners manual are carried out Carburetor Ignition system ignition module Spark plug Airfilter Manifold Fasteners This warranty gives you specific legal rights and you may have other rights which vary from state to state I Maintenance Statements You as the owner are responsible for the performance of the required maintenance especially of those parts listed above as defined in the relevant instructions of this manual These instructions are based on the application of the recommended 2 stroke mixture see also instruction Fuel Discrepancies regarding quality and mixing ratio of fuel and oil may require shorter maintenance intervals 017 018 Use caution when handling fuel Move the chainsaw at least 10 feet 3 m from the fueling point before starting the engine Do not
39. ice other than the items listed in the Owner s Manual maintenance instruc tions should be performed by competent chainsaw service personnel For example if improper tools are used to remove the flywheel or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur and could be subsequently cause the flywheel to burst 18 When transporting your chain saw use the appropriate chain guard scabbard Other important safety precautions are contained in the body of the Owner s Manual Note When using a chainsaw for logging purposes refer to the Code of Federal Regulations Parts 1910 and 1928 Z WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm englisch english USA CARB EPA
40. ing this avoids one sided wear Use a piece of hardwood to remove burrs from cutting edge Check angles with the filing gauge All cutters must be the same length If the cutters are not the same length they will have different heights This makes the chain run roughly and can cause it to break Find the shortest cutter and then file all other cutters back to the same length This can be very time consuming it is best to have it done in the workshop on an electric grinder Special accessory Depth gauge setting The depth gauge determines the height at which the cutter enters the wood and thus the thickness of the chip removed Distance between depth gauge and cutting edge a Zz x oO N O q lt a OQ ise o Sharpening tools Chain Depth gauge pitch distance a 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 mild weather season no frost Lowering depth gauges The depth gauge setting is reduced when the chain is sharpened Use filing gauge to check the setting every time you sharpen the chain and if necessary lower the depth gauge with a flat or triangular file so that it is level with the filing gauge Zz x N Q lt x a Q ive o Round off depth gauges paral
41. ins these bars may be less effective in reducing kickback and may result in higher kickback forces Bow Guides AN iaa Do not mount a bow guide on any STIHL chainsaw Any chainsaw equipped with a bow guide is potentially very dangerous The risk of kickback is increased with a bow guide because of the increased kickback contact area Low kickback chain will not significantly reduce the risk of kickback injury when used on a bow guide To avoid kickback The best protection from personal injury that may result from kickback is to avoid kickback situations 1 Hold the chainsaw firmly with both hands and maintain a secure grip 2 Be aware of the location of the guide bar nose at all times 3 Never let the nose of the guide bar contact any object Do not cut limbs with the nose of the guide bar Be especially careful when cutting small tough limbs small size brush and saplings which may easily catch the chain Don t overreach Don t cut above shoulder height Begin cutting and continue at full throttle Cut only one log at a time Use extreme caution when reentering a previous cut 9 Do not attempt to plunge cut if you are not experienced with these cutting techniques 10 Be alert for shifting of the log or other forces that may cause the cut to close and pinch the chain 11 Maintain saw chain properly Cut with a correctly sharpened properly tensioned chain at all times 12 Stand to the
42. l into the canister first and then add gasoline Gaso Oil STIHL 50 1 or line 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 only at authorized disposal locations 29 Fueling mi 143BA008 KN Before fueling clean the fuel filler cap and the area around it to ensure that no dirt falls into the tank Always thoroughly shake the mixture in the canister before fueling your machine Warning In order to reduce the risk of burns or other personal injury from escaping gas vapor and fumes remove the fuel filler cap carefully so as to allow any pressure build up in the tank to release slowly A Warning After fueling tighten fuel cap as securely as possible by hand Use a suitable tool e g screwdriver end of combination wrench to tighten slotted fuel caps 30 143BA009 KN Change the fuel pick up body every year Before storing your machine for a long period drain and clean the fuel tank and run engine until carburetor is dry 017 018 Chain Lubricant For automatic and reliable lubrication of the chain and guide bar Use only a quality environmentally compatible chain and bar lubricant STIHL chain lubricant with non fling additive or the rapidly biodegradable STIHL Bioplus is recommended Important Biological chain oil must be resistant to aging e g STIHL Bioplus since it will otherwise quickly turn to resin This result
43. lel to the stamped marking After sharpening Clean the chain thoroughly remove filings or grinding dust lubricate the chain by immersing it in an oil bath Before long out of service period Clean the chain with a brush and immerse it in an oil bath Chain pitch Round file Round file Inch mm mm Inch Part No 1 4 6 35 4 0 5 32 5605 772 4006 3 8 PMN 9 32 4 0 5 32 5605 772 4006 3 8 P 9 32 4 0 5 32 5605 772 4006 0 325 8 25 4 8 3 16 5605 772 4806 3 8 9 32 5 2 13 64 5605 772 5206 0 404 10 26 5 5 7 32 5605 772 5506 File holder Part No 5605 750 4327 5605 750 4327 5605 750 4327 5605 750 4328 5605 750 4329 5605 750 4330 consisting of file holder with round file flat file and filing gauge Filing gauge Flat file Sharpening kit Part No Part No Part No 1110 893 4000 0814 353 3356 5605 007 1027 0000 893 4000 0814 353 3356 5605 007 1026 1110 893 4000 0814 353 3356 5605 007 1027 1110 893 4000 0814 353 3356 5605 007 1028 1110 893 4000 0814 353 3356 5605 007 1029 1106 893 4000 0814 353 3356 5605 007 1030 45 Maintenance Chart Please note that the following maintenance intervals apply for normal operating conditions only If your daily working time is longer than normal or cutting conditions are difficult eevee a very dusty work area tropical wood etc shorten
44. ll safety precautions to avoid kickback situations 15 Low kickback chain Some types of saw chain have specially designed components to reduce the force of nose contact kickback STIHL has developed low kickback chain for your powerhead Low kickback saw chain is a chain which has met the kickback performance requirements of 5 12 2 4 of ANSI B 175 1 1991 Safety Require ments for Gasoline Powered Chain Saws when tested on a selected repre sentative sample of chainsaws below 3 8 cubic inch displacement specified in ANSI B 175 1 1991 A Warning There are potential powerhead and bar combinations with which low kickback saw chains can be used which have not been specifically certified to comply with the 45 computer derived kickback angle of 5 12 of ANSI B 175 1 1991 Some low kickback chains have not been tested with all powerhead and bar combinations Warning A dull or improperly sharpened chain may reduce or negate the effects of the design features intended to reduce 16 kickback energy Improper lowering or sharpening of the depth gauges or shaping of the cutters may increase the chance and the potential energy of a kickback Always cut with a properly sharpened chain Reduced kickback bar STIHL green labeled reduced kickback bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback chains AN inia When used with other more aggressive cha
45. manual contains operating and safety instructions for all STIHL 017 018 series chainsaws Pay special attention to the safety precautions outlined on the inside cover and on pages 4 to 24 Allow only persons who understand this Manual to operate your chainsaw To receive maximum performance and satisfaction from your STIHL chainsaw it is important that you read and under stand the maintenance and safety precautions before using your saw Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this Manual Aiia Because a chainsaw is a high speed wood cutting tool some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury Careless or improper use may cause serious or even fatal injury STIHL s philosophy is to continually improve all of its products As a result engineering changes and improvements are made from time to time If the opera ting characteristics or the appearance of your saw differ from those described in this Manual please contact your STIHL dealer for information and assistance STIHL Main Parts of the Saw Twist lock Spark plug boot Decompression valve Chain brake Chain sprocket Chain sprocket cover Chain catcher Chain tensioner Adjusting wheel of quick tensioner Bumper spike Guide bar Oilomatic saw chain NA OOAOANDABRWDND a 3 11 eee be Zz x D T
46. move resulting 45 degree piece o Open face technique A felling notch determines the direction of the fall For an open face cut Properly place felling notch perpendicular to the line of fall close to the ground Cut down at app 50 degree angle to a depth of app 1 5 to 1 4 of the trunk diameter Make second cut from below at app 40 degree angle Remove resulting 90 degree piece 19 lt a oO Tt fo lt a x Q Making sapwood cuts For medium sized or larger trees make cuts at both sides of the trunk atsame height as subsequent felling cut Cutto no more than width of guide bar This is especially important in soft wood in summer it helps prevent sapwood splintering when the tree falls 20 001BA044 LA B Felling cut Conventional and open face technique Begin 1 to 2 inches higher than center of felling notch Cut horizontally towards the felling notch Leave approx 10 of diameter uncut This is the hinge Donotcut through the hinge you could lose control of the direction of the fall Drive wedges into the felling cut where necessary to control the fall Warning If the tip of the bar contacts a wedge it may cause kickback Wedges should be of wood or plastic never steel which can damage the chain 001BA045 LA C Hinge Helps control the falling tree Do not cut through the hinge you could lose control of the directi
47. mpt these techniques Sectioning method For the sectioning method make the first part of the felling cut with the guide bar fanning in toward the hinge Then using the bumper spike as a pivot reposition the saw for the next cut 001BA048 L Avoid repositioning the saw more than necessary When repositioning for the next cut keep the guide bar fully engaged in the kerf to keep the felling cut straight If the saw begins to pinch insert a wedge to open the cut On the last cut do not cut the hinge Plunge cut method Timber having a diameter more than twice the length of the guide bar requires the use of the plunge cut method before making the felling cut 21 lt ail Q eo O q a x Q o First cut a large wide felling notch Make a plunge cut in the center of the notch The plunge cut is made with the guide bar nose Begin the plunge cut by applying the lower portion of the guide bar nose to the tree at an angle Cut until the depth of the kerf is about the same as the width of the guide bar Next align the saw in the direction in which the recess is to be cut With the saw at full throttle insert the guide bar in the trunk Enlarge the plunge cut as shown in illustration Warning There is an extreme danger of kickback at this point Extra caution must be taken to maintain control of the saw To make the felling cut follow the sectioning method described previously 22 If you are ine
48. nd on rear handle and throttle trigger Left handers should follow these instructions too Wrap your fingers tightly around the handles keeping the handles cradled between your thumb and forefinger With your hands in this position you can best oppose and absorb the push pull and kickback forces of your saw without losing control see section on reactive forces Make sure your chainsaw handles and grip are in good condition and free of moisture pitch oil or grease A Warning Do not operate your chainsaw with the starting throttle lock engaged Cutting with the starting throttle lock engaged does not permit the operator proper control of the saw or chain speed lt oi _ io lt x a Q IAEE Never touch a chain with your hand or any part of your body when the engine is running even when the chain is not rotating The chain continues to rotate for a short period after the throttle trigger is released Warning Do not cut any material other than wood or wooden objects Use your chainsaw for cutting only It is not designed for prying or shoveling away limbs roots or other objects When sawing make sure that the saw chain does not touch any foreign materials such as rocks fences nails and the like Such objects may be flung off damage the saw chain or cause the saw to kickback AN wami In order to keep control of your saw always maintain a firm foothold 001BA031 L Never
49. nd the front handle If the cutting position is such that the operator s left hand is gripping the front handle behind the hand guard and if the left hand rotates around the front handle and makes a sufficiently forceful contact with the front hand guard which is the Quick stop activating lever this contact will activate the Quickstop The chain brake on most new model STIHL chainsaws can also be activated by inertia See the chapter entitled Chain Brake of your Owner s Manual ASTEN Never operate your chainsaw without a front hand guard In a kickback situation this guard helps protect your left hand or other parts of your body In addition removal of the hand guard on a saw equipped with a chain brake will deactivate the chain brake Nina No Quickstop or other chain brake device prevents kickback These devices are designed to reduce the risk of kickback injury if activated in certain kickback situations In order for the Quickstop to reduce the risk of kickback injury it must be properly maintained and in good working order See the chapter entitled Chain Brake and Maintenance Repair and Storing of your Owner s Manual In addition there must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to activate and stop the chain before potential contact with the operator A Warning An improperly maintained chain brake may increase the time needed
50. ned as factors in the develop ment of whitefinger disease In order to reduce the risk of whitefinger disease and carpal tunnel syndrome please note the following Many STIHL models are available with an anti vibration AV system designed to reduce the transmission of vibrations created by the engine and cutting attachment to the operator s hands An AV system is recommended for those persons using chainsaws on a regular or sustained basis Wear gloves and keep your hands warm Heated handles which are available on most STIHL power heads are recommended for cold weather use Keep the saw chain sharp and the saw including the AV system well maintained A dull chain will in crease cutting time and pressing a dull chain through wood will in crease the vibrations transmitted to your hands A saw with loose com ponents or with damaged or worn AV buffers will also tend to have higher vibration levels Maintain a firm grip at all times but do not squeeze the handles with constant excessive pressures Take frequent breaks All the above mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome Therefore continual and regular users should monitor closely the condition of their hands and fingers If any of the above symptoms appear seek medical advice immediately Proper Clothing ZN warning To reduce the risk of injury the operator
51. ng Always stop the engine and ensure that the chain is stopped before making any adjustments maintenance or repair work 23 changing the saw chain or cleaning the saw Do not attempt any maintenance or repair work not described in your Owner s Manual Have such work perfor med at your STIHL service shop only Warning Never test the ignition system with ignition wire terminal removed from spark plug or with unseated spark plug since uncontained sparking may cause a fire Warning To reduce the risk of fire and burn injury use only spark plugs authorized by STIHL Always press spark plug boot snugly onto spark plug terminal of the proper size Note If terminal has detachable SAE adapter nut it must be attached A loose connection between spark plug terminal and ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire Keep spark plug clean and make sure ignition lead is in good condition A Warning Do not operate your chainsaw if the muffler is damaged missing or modified An improperly maintained muffler will increase the risk of fire and hearing loss Never touch a hot muffler or burn will 24 result If your muffler was equipped with a spark arresting screen to reduce the risk of fire e g in the USA Canada and Australia never operate your saw if the screen is missing or damaged Remem ber that the risk of forest fires is greater in hot or dry weather
52. njury An understanding of the causes of these reactive forces may helpyou avoid loss of control The most common reactive forces are kickback pushback pull in Kickback Kickback may occur when the moving saw chain A near the upper quadrant of AAY the bar nose contacts a solid object or is pinched lt l wo oO io lt a rc Q The reaction of the cutting force of the chain causes a rotational force on the chainsaw in the direction opposite to the chain movement This may fling the bar up and back in an uncontrolled arc mainly in the plane of the bar Under some cutting circumstances the bar moves towards the operator who may suffer severe or fatal injury Kickback may occur when the nose of the guide bar is pinched unexpectedly unintentionally contacts solid material in the wood or is incorrectly used to begin a plunge or boring cut It may also occur during limbing The greater the force of the kickback reaction the more difficult it becomes for the operator to control the saw Many factors influence the occurrence and force of the kickback reaction These include chain speed the speed at which the bar and chain contact the object the angle of contact the condition of the chain and other factors The type of bar and saw chain you use is an important factor in the occurrence and force of the kickback reaction Some STIHL bar and chain types are designed to reduce kickback forces
53. on of toxic dust mists and fumes cannot be eliminated the operator and any by standers should always wear a respirator approved by NIOSH MSHA for the type substance at issue A Warning Breathing asbestos dust is dangerous and can cause severe or fatal injury re spiratory illness or cancer The use and disposal of asbestos containing products have been strictly regulated by OSHA and the Environmental Protection Agen cy Do not cut or disturb asbestos asbe stos containing products e g asbestos containing drywall or other construction products or products such as pipes which are wrapped or covered with asbe stos insulation If you have any reason to believe that you might be cutting asbe stos immediately contact your employer or 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 remain hot for a while after stopping the engine To reduce risk of burns do not touch the muffler and other parts while they are 10 hot Don t work alone Keep within calling distance of others in case help is needed Your chainsaw is equipped with a chain catcher It is designed to reduce the risk of personal injury in the event of a thrown or broken chain From time to time the catcher may be damaged or removed To reduce the risk of personal injury do not operate a chainsaw with a damaged or missing catcher Inspect buffers periodic
54. on control system warranty on your 1995 and later utility equipment engine In California new utility and lawn and garden equipment engines must be designed built and equipped to meet the State s stringent anti smog standards Andreas Stihl must warrant the emission control system on your utility equipment engine for the periods of time listed below provided there has been no abuse neglect or improper maintenance of your lawn and garden equipment engine Your emission control system includes parts such as the carburetor and the ignition system Where a warrantable condition exists Andreas Stihl will repair your lawn and garden equipment engine at no cost to you including diagnosis parts and labor Manufacturer s Warranty Coverage The 1995 and later utility equipment engines are warranted for two years If any emission related part on your engine is defective the part will be repaired or replaced by Andreas Stihl 017 018 Owner s Warranty Responsibilities As the utility equipment engine owner you are responsible for the performance of the required maintenance listed in your owner s manual Andreas Stihl recommends that you retain all receipts covering maintenance on your utility equipment engine but Andreas Stihl cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance As the utility equipment engine owner you should be aware howe
55. on of the fall Warning In order to reduce the risk of personal injury never stand directly behind the tree when it is about to fall since part of the trunk may split and come back towards the operator barber chairing or the tree may jump backwards off the stump Always keep to the side of the falling tree When the tree starts to fall withdraw the bar shut off the engine and walk away on the preplanned escape path Watch out for falling limbs lt al oO Tt fo lt x a Q A Warning Be extremely careful with partially fallen trees which are poorly supported When the tree hangs or for some other reason does not fall completely set the saw aside and pull the tree down with a cable winch block and tackle or tractor If you try to cut it down with your saw you may be injured Felling cut for small diameter trees simple fan cut Engage the bumper spikes of the chain saw directly behind the location of the intended hinge and pivot the saw around this point only as far as the hinge The bumper spike rolls against the trunk 001BA047 L Felling cut for large diameter trees Warning Felling a tree that has a diameter greater than the length of the guide bar requires use of either the sectioning felling cut or plunge cut method These methods are extremely dangerous because they involve the use of the nose of the guide bar and can result in kickback Only properly trained professionals should atte
56. ons on Specifications Kickback and the ANSI B 175 1 1991 chainsaw kickback standard in this manual A Warning Proper tension of the chain is extremely important In order to avoid improper setting the tensioning procedure must be followed as described in your manual Always make sure the hexagonal nut s for the sprocket cover is are tightened securely after tensioning the chain Never start the saw with the sprocket cover loose Check chain tension once more after having tightened the nut s and thereafter at regular intervals when ever the saw is shut off If the chain becomes loose while cutting shut off the engine and then tighten Never try to tighten the chain while the engine is running Fueling Your STIHL chainsaw uses an oil gaso line mixture for fuel see chapter Fuel of your Owner s Manual ANa Gasoline is an extremely flammable fuel If spilled or ignited by a spark or other ignition source it can cause fire and serious burn injury or property damage Use extreme caution when handling gasoline or fuel mix Do not smoke or bring any fire or flame near the fuel or the chainsaw Note that combustible fuel vapors may be vented from the fuel system Fueling Instructions ZN warning Fuel your chainsaw in well ventilated areas outdoors only Always shut off the engine and allow it to cool before refue ling Gasoline vapor pressure may build up inside the gas tank of a two
57. ply with the computed kickback angle requirements of 5 12 of ANSI B 175 1 1991 use only the following cutting attachments bar and chain combinations listed as complying in the Specifications section of the Owner s Manual or other replacement bar and chain combinations marked in accordance with the standard for use on the powerhead or replacement chain designated low kickback saw chain See the section on Low kickback saw chain and reduced kickback bars 13 Devices for reducing the risk of kickback injury STIHL recommends the use of the STIHL Quickstop chain brake on your power head with green labeled reduced kick back bars and low kickback chains A Warning To reduce the risk of injury stop using the saw immediately if the chain brake does not function properly Take the saw to your local STIHL Service Centre Do not use the saw until the problem has been rectified see the section Chain Brake Quickstop chain brake STIHL has developed a chain stopping system designed to reduce the risk of injury in certain kickback situations It is called a Quickstop chain brake The Quickstop is available as standard equipment on your STIHL chainsaw and is available for installation on most older STIHL saws Ask your dealer to retrofit your older model saw with a chain brake 14 lt al Oo ise fo lt a Q o When a kickback occurs the guide bar may rotate arou
58. r and chain combination that complies with the kickback requirements of the ANSI Standard See the sections entitled Safety Precautions and Specifications of this manual Do not rely exclusively upon the safety devices built into your saw As a chainsaw user you should 1 With a basic understanding of kickback you can reduce or eli minate the element of surprise Sudden surprise contributes to accidents Keep a good firm grip on the saw with both hands the right hand on the rear handle and the left hand on the front handle when the engine is run ning Use a firm grip with thumbs and fingers encircling the chainsaw handles A firm grip will help you reduce kickback and maintain control of the saw Don t let go Make sure the area in which you are cutting is free from obstruc tions Do not let the nose of the guide bar contact a log branch or any other obstruction while you are operating the saw Cut at high engine speeds Do not overreach or cut above shoulder height Only use replacement bars and chains specified by the manu facturer or the equivalent Reduced kickback bars and low kickback chains are designed to reduce the risk of kickback injury Ask your STIHL dealer about these devices Other Safety Precautions Do not operate a chainsaw with one hand Serious injury to the operator helpers bystanders or any combination of these persons may result from one handed operation A ch
59. r to Cold Start M Turn the twist lock above the rear handle 90 counterclockwise Liftoff the shroud vertically 38 no fte Q lt a oO vt Lift filter off vertically Wash filter element in a clean non flammable cleaning solution e g warm soapy water and then dry Always replace a damaged filter element Reinstall the filter Taking Care of Guide Bar 143BA055 KN Turn the bar over every time you sharpen the chain and every time you replace the chain this avoids one sided wear especiallly at nose and under side of the bar Regulary clean 1 oil inlet hole 2 oilway 3 bar groove Measure groove depth with scale on filing gauge or in area used most for cutting on Rollomatic bars Chain Chain Minimum type pitch groove depth Picco Mini 3 8 5 0 mm 0 20 If groove depth is less than specified Replace the guide bar The drive link tangs will otherwise scrape along the bottom of the groove the cutters and tie straps will not ride on the rails Special accessory 017 018 Adjusting Carburetor L La with two adjusting screws Motor Management Exhaust emissions are controlled by the design of the fundamental engine parameters and components e g carburetion ignition timing and valve or port timing without the addition of any major hardware The carburetor does not have a high speed adjusting screw H screw but is desi
60. s in hard deposits that are difficult to remove especially in the area of the chain drive clutch and chain It may even cause the oil pump to seize The service life of the chain and guide bar depends on the quality of the lubricant It is therefore essential to use only a specially formulated chain lubricant If special chain lubricant is not available you may in an emergency use an HD single grade or multigrade engine oil with a viscosity that suits the prevailing outside temperature A Warning Medical studies have shown that renewed contact with waste oil can cause skin cancer Avoid direct contact with waste oil If waste oil does get on your skin wash with soap and water Do not use waste oil for any purpose and dispose of it only at authorized disposal locations 017 018 Filling Chain Oil A Tank S x o 2 fea oO i Thoroughly clean the oil filler cap and the area around it to ensure that no dirt falls into the tank Refill the chain oil tank every time you refuel There must still be a small amount of oil in the oil tank when the fuel tank is empty If the oil tank is still partly full the reason may be a problem in the oil supply system Check chain lubrication clean the oil passages contact your STIHL dealer for assistance if necessary Checking Chain Lubrication 143BA024 KN The saw chain must always throw off a small amount of oil Never operate your saw without
61. t fo lt x Q oO T 13 Oil filler cap 14 Muffler 15 Front hand guard 16 Front handle handlebar 17 Starter grip 18 Fuel filler cap 19 Master Control lever 20 Throttle trigger 21 Throttle trigger interlock 22 Rear handle 23 Rear hand guard Special accessory 143BA050 KN 2 017 018 Definitions 10 Carburetor Box Cover Twist Lock Lock for carburetor box cover Spark Plug Boot Connects the spark plug with the ignition wire Decompression Valve Releases compression pressure to make starting easier Chain Brake A device to stop the rotation of the chain if activated in a kickback situation by the operator s hand or by inertia Chain Sprocket The toothed wheel that drives the saw chain Chain Sprocket Cover Covers the clutch and the sprocket Chain Catcher Helps to reduce the risk of operator contact by a chain when it breaks or comes off the bar Chain Tensioner Permits precise adjustment of chain tension Adjusting Wheel Permits precise adjustment of chain tension Bumper Spike Toothed stop for holding saw steady against wood 017 018 11 12 13 14 15 16 17 18 19 20 Guide Bar Supports and guides the saw chain Oilomatic Saw Chain A loop consisting of cutters tie straps and drive links Oil Filler Cap For closing the oil tank Muffler Reduces engine exha
62. t work with a dull or damaged chain as it will increase the physical effort required produce unsatisfactory results and a higher rate of wear Clean and check your chain for cracks in the links and damaged rivets replace any damaged or worn parts of the chain and match the new parts to the shape and size of the original parts Important It is absolutely imperative to comply with the angles and dimensions specified below If the saw chain is incorrectly sharpened and in particular if the depth gauge is set too low there is a risk of increased kickback of the chainsaw with resulting danger of injury Select the appropriate sharpening tools for the chain pitch See Technical Data for the permitted chain pitches The chain pitch e g 3 8 is marked on the depth gauge side of each cutter Use only special saw chain files Other files have the wrong shape and cut Select file diameter according to chain pitch see table at the end of this chapter You must observe certain angles when resharpening the chain cutters rA x Oo N z a DQ ise Oo 689BA021 KN A Filing angle B Side plate angle Chain type Angle A B Rapid Micro RM 30 85 Rapid Super RS 30 60 Picco Micro PM PMN 30 85 Cutter shapes Micro Semi chisel Super Full chisel Specified angles A and B are obtained automatically if recommen ded files or sharpening tools and correct settings are used Furth
63. th the screws 017 018 Checking Spark Plug A 000BA039 KN Wrong fuel mix too much engine oil in the gasoline a dirty air filter and unfavorable running conditions mostly at part throttle etc affect the condition of the spark plug These factors cause deposits to form on the insulator nose which may result in trouble in operation If engine is down on power difficult to start 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 A readjust if necessary Use only resistor type spark plugs of the approved range Rectify problems which have caused fouling of spark plug Incorrect carburetor setting too much oil in fuel mix dirty air filter unfavorable running conditions e g operating at part load 017 018 000BA036 TR Fit anew spark plug after approx 100 operating hours or earlier if the electrodes are badly eroded ZN Warning To reduce the risk of fire and burn injury use only spark plugs authorized by STIHL see Specifications Always press spark plug boot 2 snugly onto spark plug terminal 1 of the proper size Note If terminal has detachable SAE adapter nut it must be attached A loose connection between spark plug terminal and ignition wire connector in the boot may create arcing that could ignite combustibl
64. the specified intervals accordingly 8 Ble 2 elg X o2 538 gt 17 28 213 SE 5 38 3 6 2 es amp o 3 5s Sl 2 2 s g 8 Complete machine Visual inspection condition leaks x x Clean x Master Control depending on model Check operation x x F Check operation x x 32 Ghain brake Have cleaned by STIHL dealer x 32 Filter in fuel tank Check l x au Clean replace filter element x Fuel tank Clean x 30 Chain oil tank Clean x Chain lubrication Check x 31 Inspect also check sharpness x x Saw chain Check chain tension x x 26 Sharpen x 43 Check wear damage x 38 Guide bar Clean and turn over x x Deburr x Replace x X Chain sprocket Check x 42 Air filter Clean x x 38 Replace x Cooling inlets Clean x Cylinder fins Clean x Check idle adjustment chain must not turn x x 39 40 Carburetor are Readjust idle x Spark plug Readjust electrode gap x 41 All accessible screws and nuts x not adjusting screws Retighten Rubber vibration buffers Have replaced by STIHL dealer x Spark arresting screen in muffler Inspect z z Clean or replace x xX 40 Chain catcher Check 2 Replace x 46 017 018 Specifications Engine STIHL single cylinder two stroke engine 017 Displacement 30 1 cm 1 89 cu in Bore 37 mm 1 46 in Stroke 28 mm 1 10 in 018 Displacement 31 8 cm 1 91 cu in Bore 38 mm 1 50 in Stroke 28 mm 1 10 in Ignition System Electronic magneto ignition Spark plug suppressed BOSCH WSR 6
65. u even if the chain is not moving At full throttle the chain speed can reach 45 mph 20 m s It is impor tant that you read fully understand and observe the following safety precau tions and warnings Read the Owner s Manual and the safety instructions periodically Pay special attention to the section on reactive forces A Warning Reactive forces including kickback can be dangerous Careless or improper use of any chainsaw may cause serious or fatal injury All safety precautions that are generally observed when working with an ax or a hand saw also apply to the operation of chainsaws However because a chain saw is a high speed fast cutting power tool special safety precautions must be observed to reduce the risk of personal injury Have your STIHL dealer show you how to operate your chainsaw Observe all applicable local safety regulations standards and ordinances Ana Minors should never be allowed to use a chainsaw Bystanders especially children and animals should not be allowed in the area where a chainsaw is in use Never let the saw run unattended Store it in a locked place away from children and empty the fuel tank before storing for longer than a few days Do not lend or rent your chainsaw without the Owner s Manual Be sure that anyone using your saw reads and under stands the information contained in this manual These safety precautions and warnings apply to the use of all
66. underbuck cut because the chain can pinch Cutting Techniques Felling Felling is cutting down a tree Before felling a tree consider carefully all conditions which may affect the direction of 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 Tienes Always observe the general condition of the tree Inexperienced users should never attempt to cut trees which are decayed or rotted inside or which are leaning or otherwise under tension There is an increased risk that such trees could snap or split while being cut and cause serious or fatal injury to the operator or bystanders Also look for broken or dead branches which could vibrate loose and fall on the operator When felling on a slope the operator should stand on the uphill side if possible 17 001BA088 LA Felling Instructions When felling maintain a distance of at least 21 2 tree lengths from the nearest person When felling in the vicinity of roads railways and power lines etc take extra precautions Inform the police utility company or railway authority before beginning to cut Warning The noise of your engine may drown any warning call Warning There are a number of factors that may affect and change the intended direction of fall e g wind lean of tree sloping ground one sided limb structure wood
67. ust noise and directs the exhaust gases Front Hand Guard Provides protection against projecting branches and helps prevent left hand from touching the chain if it slips off the handle bar It also serves as the lever for chain brake activitation Front Handle Handle bar for the left hand at front of saw Starter Grip The grip of the starter for starting the engine Fuel Filler Cap For closing the fuel tank Master Control Lever Lever for choke control starting throttle run and stop switch position Throttle Trigger Controls the speed of the engine 21 Throttle Trigger Interlock Must be depressed before the throttle trigger can be activated 22 Rear Handle The support handle for the right hand located at or toward the rear of the saw 23 Rear Hand Guard Gives added protection to operator s right hand Guide Bar Nose The exposed end of the guide bar not illustrated see chapter Tensioning the Saw Chain Clutch Couples engine to chain sprocket when engine is accelerated beyond idle speed not illustrated Anti Vibration System The anti vibration system includes a number of buffers designed to reduce the transmission of vibrations created by the engine and cutting attachment to the operator s hands not illustrated Safety Precautions The use of any chainsaw may be hazardous The saw chain has many sharp cutters If the cutters contact your flesh they will cut yo
68. ver that Andreas Stihl may deny you warranty coverage if your utility equipment engine or a part has failed due to abuse ne glect improper maintenance or unapproved modifications You are responsible for presenting your utility equipment engine to a Stihl service centre as soon as a problem exists The warranty repairs will be completed in a reasonable amount of time not to exceed 30 days If you have any questions regarding your 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 A Warranty Commencement Date The warranty period begins on the date the engine or equipment is delivered to you and you have signed and sent back the warranty card to Stihl B Length of Coverage The engine manufacturer warrants to the initial owner and each subsequent purchaser that the engine is free from defects in materials and workmanship which cause the failure of a warranted part for a period of two years C What is Covered 1 Repair or Replacement of Parts Repair or replacement of any warranted part will be performed at no charge to the owner at an authorized Stihl servicing dealer To obtain information about the authorized servicing dealer nearest you call 1 800 467 8445 or you can write to Stihl Inc 536 Viking Drive P O Box 2015 Virginia Beach VA 23450 2015
69. w Chain Models with Quick Chain Tensioner 143BA045 KN Zz x oO O q Q M k om Retensioning during cutting work Turn off the engine Pull out the handle of the wingnut Slacken off the wingnut Turn adjusting wheel 1 clockwise up to the stop Tighten firmly down the wingnut 2 by hand Fold down the handle of the wingnut Check chain tension A new chain has to be retensioned more often than one that has been in use for some time Check chain tension frequently see section During Operation Now referto chapter Checking Chain Tension 017 018 Checking Chain Tension All Versions x Ss Q fea oO F Turn off the engine Wear work gloves Chain must fit snugly against the underside of the bar and with the chain brake disengaged it must still be possible to pull the chain along the bar by hand If necessary retension the chain A new chain has to be retensioned more often than one that has been in use for some time Check chain tension frequently see section During Operation 017 018 Fuel Mix This engine is certified to operate on unleaded gasoline and oil with the mix ratio 50 1 Your two stroke engine requires a mixture of brand name gasoline and quality two stroke engine oil with the classification TC Use regular branded unleaded gasoline with a minimum octane rating of 90 ROZ U S A Canada pump octane min 8
70. xperienced with a chainsaw plunge cutting should not be attempted Seek the help of a professional Limbing Limbing is removing the branches from a fallen tree Warning There is an extreme danger of kickback during the limbing operation Do not work with the nose of the bar Be extremely cautious and avoid contacting the log or other 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 to support the log off the ground When underbucking 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 Warning Be extremely cautious when cutting limbs or logs under tension spring poles The limbs or logs could spring back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator L al oO oO io lt x a Q Bucking Bucking is cutting a log into sections Warnings 1 When bucking do not stand on the log Make sure the log will not roll downhill If on a slope stand on the uphill side of the log Watch out for rolling logs 001BA051 LA Cut only one log at a time Shattered wood should be cut very carefully Sharp slivers of wood may be caught and flung in the direction of the operator of the saw When cutting small logs place log through
71. y 39 Adjusting Carburetor with one adjusting screw Zz x foe Tt fo lt Q M vt The carburetor is set at the factory to provide an optimum fuel air mixture under all operating conditions Adjusting idle speed Check air filter and fit a new one if necessary Check spark arresting screen and clean or replace as necessary 40 Carefully screw down the idle speed screw LD counterclockwise left hand thread until it is firmly seated Then back off the screw two full turns clockwise standard setting LD 2 Start and warm up the engine Use idle speed screw LD to adjust idle speed correctly chain must not rotate Engine idle speed is too low Turn the idle speed screw LD clockwise until chain begins to run then back off the screw half a turn Chain runs when engine is idling Turn the idle speed screw LD counterclockwise until chain stops running then turn the screw about another half turn in the same direction Spark Arresting Screen in Muffler isda ol 6 a A gt Ed a i If the engine is low on power check the spark arresting screen inside the muffler Take out the screws 1 and remove the shroud 2 Remove the spark arresting screen 3 from the muffler 4 Clean spark arresting screen if necessary If screen is damaged or coked up fit a new one Refit the spark arresting screen place the shroud in position and secure wi

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