STIHL 009 Instruction Manual

STIH)

Occasional User Saw

Warning! To reduce the risk of kickback injury use STIHL reduced kickback bar and STIHL PM 1 (3/8" Picco), RM 2 (0.325") or PM 2 (3/8") chain depending on sprocket pitch or other available low kickback components.

Read and follow all safety precautions in Instruction Manual – improper use can cause serious or fatal injury. Some Important Safety Precautions for Chain Saw Users

A. Do not rely exclusively upon the safety 6. Follow manufacturer's sharpening A Summary of Warnings on devices built into your saw. As a and maintenance instructions for kickback and other Selected chainsaw user, you should take several the saw chain. Risks – Taken Primarily from steps to keep your cutting jobs free from 7. Only use replacement bars and ANSI B 175.1 (See also “Safety accident or injury. chains specified by the Precautions“ section of this 1. With a basic understanding of manufacturer or the equivalent. Owner’s Manual) kickback, you can reduce or 8. Reduced kickback bars and low eliminate the element of surprise. kickback chains are designed to !Warning! Sudden surprise contributes to reduce the risk of kickback injury. Kickback may occur when the nose or accidents. Ask your STIHL dealer about these tip of the guide bar touches an object, or 2. Keep a good firm grip on the saw devices. when the wood closes in and pinches with both hands, the right hand on the saw chain in the cut. Tip contact in the rear handle, and the left hand on B. some cases may cause a lightning fast the front handle, when the engine is Other Safety Precautions reverse reaction, kicking the guide bar running. Use a firm grip with thumbs up and back towards the operator. and fingers encircling the chainsaw !Warning! Pinching the saw chain along the top of handles. A firm grip will help you 1. Do not operate a chainsaw with one the guide bar may push the guide bar reduce kickback and maintain hand! Serious injury to the operator, rapidly back towards the operator. Either control of the saw. Don't let go. helpers, bystanders, or any of these reactions may cause you to lose 3. Make sure the area in which you are combination of these persons may control of the saw which could result in result from one-handed operation. A serious personal injury. cutting is free from obstructions. Do not let the nose of the guide bar chainsaw is intended to be used Section 5.11 of ANSI B 175.1-2000 sets contact a log, branch, or any other with two hands. certain performance and design criteria obstruction that could be hit while 2. Do not operate a chainsaw when related to chainsaw kickback. STIHL has you are operating the saw. you are fatigued. developed a color code system using 4. Cut at high engine speeds. 3. Use safety footwear; snug-fitting green and yellow to help you select a clothing; protective gloves; and eye, powerhead, bar and chain combination 5. Do not overreach or cut above hearing, and head protection that complies with the kickback shoulder height. devices. requirements of the ANSI Standard. See the sections entitled "Safety Precautions" and "Specifications" of this manual.

continued on the back inside cover 8r

Parts of the Chain Saw 2 Adjusting Carburetor 39 This Manual contains operating and Safety Precautions 4 Motor Management 39 safety instructions for all STIHL 009 - The Operator 4 Checking Spark Plug 40 series power saws. - The Saw 6 Replacing the Chain Sprocket 41 Pay special attention to the safety - The Use of the Saw 6 Maintaining and Sharpening precautions outlined on pages 4 to 24. - Maintenance, Repair and Storing 23 Saw Chain 42 Allow only persons who understand this Maintenance Chart 46 Manual to operate your chain saw. Mounting the Bar and Chain 25 Specifications 47 Fuel 28 Ordering Spare Parts 48 To receive maximum performance and Fueling 28 Storing the Machine 48 satisfaction from your STIHL chain saw, Chain Lubricant 29 STIHL Incorporated it is important that you read and under- Fill Chain Lubricant 29 Federal and California Emission stand the maintenance and safety Chain Brake 30 Control Systems Utility Engines 49 precautions before using your saw. During Break-in Period 31 Contact your STIHL dealer or the During Operation 31 STIHL distributor for your area if you do After Finishing Work 31 not understand any of the instructions in Starting 32 this Manual. Guide Bar, Chain and Sprocket 35 Troubleshooting on Xh vt Chain Oiling System 37 Air Filter 38 Because a chain saw 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 operating characteristics or the appearance of your saw differs from Printed on chlorine-free paper those described in this Manual, please contact your STIHL dealer for information and assistance.

 Andreas Stihl AG & Co. KG, 2004

0458 125 3021. M2. F4. PM. Printed in USA

HhvQh surTh

1 = Spark plug boot 2 = Chain brake 3 = Oilomatic saw chain 4 = Guide bar 5 = Chain tensioner 6 = Chain catcher 11 7 = Chain sprocket 8 = Chain sprocket cover 9 = Bumper spike 2 10 = Muffler 9 11 = Choke control 12 8 12 = Rear hand guard 4 7 5 3 1 6 10

13 = Starter grip 14 = Oil filler cap 21 20 15 = Fuel filler cap 16 = Starting throttle lock 17 = Throttle trigger interlock 17 18 = Throttle trigger 16 19 = Stop switch 20 = Front handle 22 21 = Front hand guard 13 18 22 = Rear handle 15 19

! 9rsvvv

Th xQyt7 Hssyr ! A Chqyr Connects the spark plug with the Reduces engine exhaust noise and Handle bar for the left hand at ignition wire. directs the exhaust gases. front of saw.

! 8uhv7 hxr 8uxrp y ! A ChqBh q A device to stop the rotation of the A control used when starting cold Provides protection against chain if activated in a kickback engine. projecting branches and helps situation by the operator’s hand or prevent the left hand from by inertia. ! Srh ChqBh q touching the chain if it slips off Gives added protection to the handle bar. " PvyhvpTh8uhv operator’s right hand. A loop consisting of cutters, !! Srh Chqyr tie straps and drive links. " Th r B v The support handle for the right The grip of the starter, for starting hand, located at or toward the # Bvqr7h the engine. rear of the saw. Supports and guides the saw chain. # PvyAvyyr 8h $ 8uhvUrvr For closing the oil tank. Bvqr7h Ir Permits precise adjustment of chain The exposed end of the guide bar. tension. $ AryAvyyr 8h (not illustrated, see chapter For closing the fuel tank. ,,Tensioning the Saw Chain“.) % 8uhv8hpur Helps to reduce the risk of operator % Th vtUu yrGpx 8ypu contact by a chain when it breaks Keeps the throttle partually open Couples engine to chain sprocket or comes off the bar. during starting. when engine is accelerated beyond idle speed. & 8uhvT pxr & Uu yrU vttr Dr ypx (not illustrated). The toothed wheel that drives the Must be depressed before the saw chain. throttle trigger can be activated.

' 8uhvT pxr8r ' Uu yrU vttr Covers the clutch and the sprocket. Controls the speed of the engine.

( 7r Tvxr ( TTvpu Toothed stop for holding saw steady Switches the engine’s ignition system against wood. off and stops the engine.

" Thsr Q rphv

The use of any chainsaw Have your STIHL dealer show you how Safe use of a chainsaw involves may be hazardous. to operate your chainsaw. Observe all The saw chain has many applicable local safety regulations, 1. the operator sharp cutters. If the standards and ordinances. 2. the saw cutters contact your flesh, 3. the use of the saw. they will cut you, even if the chain is not moving. At full throttle, the chain speed Xh vt can reach 45 mph (20 m/s). It is impor- Minors should never be allowed to use a UC@ PQ@S6UPS tant that you read, fully understand chainsaw. Bystanders, especially and observe the following safety precau- children, and animals should not be Quvphy 8qvv tions and warnings. Read the Owner’s allowed in the area where a chainsaw is Manual hq the safety instructions in use. Never let the saw run unattended. You must be in good physical condition periodically. Store it in a locked place away from and mental health and not under the children and empty the fuel tank before influence of any substance (drugs, Pay special attention to the section on storing for longer than a few days. alcohol) which might impair vision, reactive forces. dexterity or judgment. Do not lend or rent your chainsaw without the Do not operate a chainsaw when you are Xh vt Owner‘s Manual. Be sure fatigued. Be alert – If you get tired while Reactive forces, including kickback, can that anyone using your operating your chainsaw, take a break. be dangerous. Careless or improper use saw reads and under- Tiredness may result in loss of control. of any chainsaw may cause serious or stands the information contained in this Working with any chainsaw can be fatal injury. manual. strenuous. If you have any condition that might be aggravated by strenuous work, All safety precautions that are generally These safety precautions and warnings check with your doctor before operating observed when working with an ax or a apply to the use of all STIHL chainsaws. a chainsaw. hand saw also apply to the operation of Different models may have different chainsaws. However, because a chain- parts and controls. See the appropriate saw is a high-speed, fast-cutting power section of your Owner’s Manual for a Xh vt tool, special safety precautions must be description of the controls and function Prolonged use of chainsaws (or other observed to reduce the risk of personal of the parts of your model saw. machines) exposing the operator to injury. vibrations may produce whitefinger disease (Raynaud’s phenomenon) or carpal tunnel syndrome. These conditions

# reduce the hand’s ability to feel and – Keep the saw chain sharp and the Clothing must be sturdy regulate temperature, produce numb- saw, including the AV system, well and snug-fitting, but allow ness and burning sensations and may maintained. A dull chain will in- complete freedom of cause nerve and circulation damage and crease cutting time, and pressing a movement. Avoid loose- tissue necrosis. dull chain through wood will in- fitting jackets, scarfs, crease the vibrations transmitted to neckties, jewelry, flared or cuffed pants, All factors which contribute to whitefinger your hands. A saw with loose com- unconfined long hair or anything that disease are not known, but cold weather, ponents or with damaged or worn could become entangled with the saw or smoking and diseases or physical condi- AV buffers will also tend to have brush. Wear overalls or jeans with a tions that affect blood vessels and blood higher vibration levels. reinforced cut retardant insert or cut transport, as well as high vibration levels retardant chaps. and long periods of exposure to vibration – Maintain a firm grip at all times, but are mentioned as factors in the develop- do not squeeze the handles with Protect your hands with ment of whitefinger disease. In order to constant, excessive pressures. gloves when handling saw reduce the risk of whitefinger disease Take frequent breaks. and saw chain. and carpal tunnel syndrome, please Heavyduty, nonslip note the following: All the above mentioned precautions do gloves improve your grip not guarantee that you will not sustain and protect your hands. The STIHL 009 is not equipped with an whitefinger disease or carpal tunnel antivibration (AV) system. syndrome. Therefore, continual and Good footing is most regular users should monitor closely the important in chainsaw – Many STIHL models are available condition of their hands and fingers. work. Wear sturdy boots with an anti-vibration (“AV”) system If any of the above symptoms appear, with nonslip soles. designed to reduce the transmission seek medical advice immediately. Steel-toed safety boots of vibrations created by the engine are recommended. and cutting attachment to the operator’s hands. An AV system is Q r 8yuvt To reduce the risk of injury to your eyes recommended for those persons never operate a chainsaw unless using chainsaws on a regular or wearing goggles or properly fitted safety Xh vt sustained basis. glasses with adequate top and side To reduce the risk of injury, the operator protection complying with your national – Wear gloves and keep your hands should wear proper protective apparel. standard. warm. Heated handles, which are available on most STIHL powerheads, are recommended for cold weather use.

$ Wear an approved safety UC@ VT@ PA UC@ T6X hard hat to protect your head. Chainsaw noise may U h vt ur puhvh damage your hearing. Always wear sound barriers (ear plugs or ear mufflers) to Xh vt protect your hearing. Continual and Always stop the engine before putting a regular users should have their hearing chainsaw down or carrying it. Carrying a checked regularly. chainsaw with the engine running is 001BA115 KN extremely dangerous. The chain guard (scabbard) should be UC@ T6X Accidental acceleration of the engine over the chain and the guide bar, which can cause the chain to rotate. During should point backwards. When carrying Parts of the chainsaw; for illustrations operation, the powerhead muffler and your saw, the bar should be behind you. and definitions of the parts see the the material around it reach extremely chapter on “Main Parts of Saw”. high temperatures. Avoid touching the 7 ruvpyr) When transporting in a hot muffler, you could receive serious vehicle, keep chain and bar covered with burns. the chain guard. Properly secure your Xh vt saw to prevent turnover, fuel spillage Never modify a chainsaw in any way. 7 uhq) When carrying your saw by and damage to the saw. Only attachments and parts supplied by hand, the engine must be stopped and STIHL or expressly approved by STIHL the saw must be in the proper position. for use with the specific STIHL saw Q rh hv s ur r s ur h models are authorized. Although certain Grip the front handle and place the unauthorized attachments are useable muffler away from the body. Take off the chain guard and inspect for with the STIHL powerhead, their use safety in operation. For assembly, follow may, in fact, be extremely dangerous. the procedure described in the chapter “Mounting the Bar and Chain” of your Owner’s Manual.

% STIHL Oilomatic chain, guide bar and Aryvt the risk of burns or other personal injury sprocket must match each other in from escaping gas vapor and fumes, gauge and pitch. Your STIHL chainsaw uses an oil-gaso- remove the fuel filler cap on the STIHL line mixture for fuel (see chapter “Fuel” product carefully so as to allow any Before replacing any bar and chain, of your Owner’s Manual). pressure build-up in the tank to release see the sections on “Specifications”, slowly. Never remove fuel filler cap while "Kickback" and the "ANSI B 175.1-2000 engine is running. chainsaw kickback standard" in this Xh vt manual. Gasoline is an extremely flammable fuel. Select bare ground for fueling and move If spilled or ignited by a spark or other at least 10 feet (3 m) from fueling spot ignition source, it can cause fire and before starting the engine. Wipe off any Xh vt serious burn injury or property damage. spilled fuel before starting your saw, and Proper tension of the chain is extremely Use extreme caution when handling check for leakage. important. In order to avoid improper gasoline or fuel mix. setting, the tensioning procedure must Xh vt be followed as described in your manual. Do not smoke or bring any Always make sure the hexagonal nut(s) fire or flame near the fuel Check for fuel leakage while refueling for the sprocket cover is (are) tightened or the chainsaw. Note that and during operation. If fuel or oil leakage securely after tensioning the chain. combustible fuel vapors is found, do not start or run the engine Never start the saw with the sprocket may be vented from the until leak is fixed and spilled fuel has cover loose. Check chain tension once fuel system. been wiped away. Take care not to get more after having tightened the nut(s) fuel on your clothing. If this happens, and thereafter at regular intervals (when- Aryvt D pv change your clothing immediately. ever the saw is shut off). If the chain becomes loose while cutting, shut off the Different models may have different fuel Xh vt engine and then tighten. Never try to caps. tighten the chain while the engine is Fuel your chainsaw in well-ventilated 8h vu B v running! areas, outdoors only. Always shut off the engine and allow it to cool before refueling. Gasoline vapor pressure may build Xh vt up inside the gas tank of a two cycle In order to reduce the risk of fuel spillage engine depending on the fuel used, the and fire from an improperly tightened weather conditions, and the venting fuel cap, correctly position and tighten system of the tank. In order to reduce the fuel cap in the fuel tank opening.

& To do this with this STIHL cap, raise the grip on the top of the cap until it is up- right at a 90° angle. Insert the cap and the fuel tank opening with the triangular marks on the grip of the cap and on the fuel tank opening lining up. Using the grip, turn the cap firmly 001BA113 KN clockwise as far as it will go (approx. a 001BA113 KN quarter turn). Fold the grip flush with the Th vt Grip the front handlebar of the saw firmly top of the cap. If the grip The chain brake must be engaged when with your left hand and press down. does not lie completely starting the saw. For saws with a rear handle level with flush with the cap and the the ground, put the toe of your right foot detent on the grip does not fit in the cor- Xh vt into the rear handle and press down. responding recess in the filler neck, the Your chainsaw is a one-person saw. With your right hand pull out the starter cap is not properly seated and tightened Do not allow other persons to be near grip slowly until you feel a definite and you must repeat the above steps. the running chainsaw. Start and operate resistance and then give it a brisk, your saw without assistance. For speci- strong pull. Tyrq 8h fic starting instructions, see the appropriate section of the Owner’s Manual. The rpq recommended ruq for Xh vt Proper starting methods reduce the risk starting your chainsaw allows you to start Unit vibrations can cause an improperly of injury. Do not drop start. This method the saw without placing it on the tightened fuel filler cap to loosen or come is very dangerous because you may ground. Make sure the chain brake is off and spill quantities of fuel. In order to lose control of the saw. engaged, grip the front handle of the reduce the risk of fuel spillage and fire, chainsaw firmly with your left hand. tighten fuel filler cap by hand with as There are two recommended methods Keep your arm on the front handle in a much force as possible. for starting your chainsaw. locked (straight) position. Hold the rear handle of the saw tightly between your The screwdriver end of the With the sv ruq the chainsaw is legs just above the knees. Maintain good STIHL combination wrench started on the ground. Make sure the balance and secure footing. Pull the or other similar tool can be chain brake is engaged (see “Chain starting grip slowly with your right hand used as an aid in tightening Brake” chapter in your Owner’s Manual) until you feel a definite resistance and then slotted fuel filler caps. and place the chainsaw on firm ground give it a brisk, strong pull. or other solid surface in an open area. See "Fueling" chapter in your Owner’s Maintain good balance and secure Manual. footing.

' D h hqwr To reduce the risk of serious or fatal Xh vt injury from breathing toxic fumes, never Be sure that the guide bar and chain are Xh vt run the chainsaw indoors or in poorly clear of you and all other obstructions To reduce the risk of personal injury from ventilated locations. Ensure proper venti- and objects, including the ground. When loss of control or contact with the lation when working in trenches or other the engine is started, the engine speed running chain, do not use a saw with confined areas. with the starting throttle lock engaged incorrect idle adjustment. At correct idle will be fast enough for the clutch to speed, the chain should not rotate. For engage the sprocket and, if the chain directions to adjust idle speed, see the :Xh vt brake is not activated, turn the chain. appropriate section of your Owner’s Use of this product (including sharpen- If the upper quadrant of the tip of the bar Manual. If you cannot set the correct idle ing the saw chain) can generate dust, touches any object, it may cause kick- speed, have your STIHL dealer check mists and fumes containing chemicals back to occur (see section on reactive your saw and make proper adjustments known to cause respiratory disease, can- forces). To reduce this risk, always or repairs. cer, birth defects, or other reproductive engage the chain brake before starting. harm. If you are unfamiliar with the risks Never attempt to start the chainsaw After adjusting a chain, start the saw, let associated with the particular dust, mist when the guide bar is in a cut or kerf. the engine run for a while, then switch or fume at issue, consult your employer, engine off and recheck chain tension. governmental agencies such as OSHA Proper chain tension is very important at and NIOSH and other sources on Xh vt all times. hazardous materials. California and When you pull the starter grip, do not some other authorities, for instance, wrap the starting rope around your X xvt 8qvv have published lists of substances hands. Do not allow the grip to snap known to cause cancer, reproductive back, but guide the starter rope slowly Operate the chainsaw under good toxicity, etc. back to permit the rope to rewind visibility and daylight conditions only. properly. Failure to follow this procedure Control dust (such as sawdust), mists may result in injury to hand or fingers Xh vt (such as oil mist from chain lubrication) and may damage the starter mechanism. Your chainsaw produces and fumes at the source where possible. poisonous exhaust fumes In this regard use good work practices as soon as the combustible and follow the recommendations of engine is running. OSHA / NIOSH and occupational and These gases (e.g. carbon trade associations. When the inhalation monoxide) may be colorless and odor- of toxic dust, mists and fumes cannot be less.

( eliminated, the operator and any by- hot. Don’t work alone. Keep within calling standers should always wear a respirator distance of others in case help is Xh vt approved by NIOSH / MSHA for the type needed. Avoid stumbling on obstacles such as substance at issue. stumps, roots or rocks and watch out for Your chainsaw is equipped with a chain holes or ditches. Clear the area where catcher. It is designed to reduce the risk you are working. Be extremely cautious Xh vt of personal injury in the event of a thrown when working on slopes or uneven Breathing asbestos dust is dangerous or broken chain. From time to time the ground. There is increased danger of and can cause severe or fatal injury, re- catcher may be damaged or removed. slipping on freshly debarked logs. spiratory illness or cancer. The use and To reduce the risk of personal injury, disposal of asbestos containing products do not operate a chainsaw with a Xh vt have been strictly regulated by OSHA damaged or missing catcher. and the Environmental Protection Agen- To reduce the risk cy. Do not cut or disturb asbestos, asbe- Inspect buffers periodically. Replace of serious or fatal stos containing products (e.g. asbestos damaged, broken or excessively worn injury to the opera- containing drywall or other construction buffers immediately, since they may tor or bystanders, products), or products such as pipes result in loss of control of the saw. never use the saw which are wrapped or covered with asbe- with one hand. stos insulation. If you have any reason A “sponginess” in the feel of the saw, You cannot control reactive forces and to believe that you might be cutting asbe- increased vibration or increased you may lose control of the saw, which stos, immediately contact your employer “bottoming” during normal operation can result in the skating or bouncing of or a local OSHA representative. may indicate damage, breakage or the bar and chain along the limb or log. excessive wear. Buffers should always The muffler and other parts of the engine be replaced in sets. If you have any Even for those compact saws designed (e.g. fins of the cylinder, spark plug) questions as to whether the buffers for use in confined spaces, one-handed become hot during operation and remain should be replaced, consult your STIHL operation is dangerous because the hot for a while after stopping the engine. servicing dealer. operator may lose control. To reduce risk of burns do not touch the muffler and other parts while they are Xh vt 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.

001BA087 L 001BA018 LA 001BA018 8vt D pv Grip: Always hold the saw firmly with Xh vt both hands when the engine is running. Never touch a chain with your hand or Place your left hand on front handle bar any part of your body when the engine is and your right hand on rear handle and running, even when the chain is not throttle trigger. Left-handers should rotating. The chain continues to rotate Ä follow these instructions too. for a short period after the throttle trigger is released. Wrap your fingers tightly around the 001BA031 L handles, keeping the handles cradled Xh vt between your thumb and forefinger. Do not cut any material other than wood Never work on a ladder, or on any other With your hands in this position, you can or wooden objects. insecure support. Never use the saw best oppose and absorb the push, pull Use your chainsaw for cutting only. above shoulder height. and kickback forces of your saw without It is not designed for prying or shoveling losing control (see section on reactive away limbs, roots or other objects. forces). Make sure your chainsaw When sawing, make sure that the saw Xh vt handles and grip are in good condition chain does not touch any foreign Never work in a tree unless you have and free of moisture, pitch, oil or grease. materials such as rocks, fences, nails received specific, professional training and the like. for such work, are properly secured (such as tackle and harness system or a Xh vt Such objects may be flung off, damage lift bucket), have both hands free for Do not operate your chainsaw with the the saw chain or cause the saw to operating the chainsaw in a cramped starting throttle lock engaged. Cutting kickback. environment and have taken proper with the starting throttle lock engaged precautions to avoid injury from falling does not permit the operator proper limbs or branches. Xh vt control of the saw or chain speed. In order to keep control of your saw, always maintain a firm foothold.

001BA093 L 001BA082 KN

Position the chainsaw in such a way that powerful force used to cut wood can be your body is clear of the cutting attach- reversed (and work against the opera- ment whenever the engine is running. tor). If the rotating chain is suddenly Stand to the left of cut while bucking. stopped by contact with any solid object like a log or branch or is pinched, the Don’t put pressure on the saw when reactive forces may occur instantly. Ä reaching the end of a cut. The pressure These reactive forces may result in loss may cause the bar and rotating chain to of control which may, in turn, cause pop out of the cut or kerf, go out of serious or fatal injury. An understanding 001BA035 L control and strike the operator or some of the causes of these reactive forces other object. If the rotating chain strikes may helpyou avoid loss of control. The reaction of the cutting force of the some other object, a reactive force may chain causes a rotational force on the cause the moving chain to strike the The most common reactive forces are chainsaw in the direction opposite to the operator. – kickback, chain movement. This may fling the bar – pushback, up and back in an uncontrolled arc – pull-in. mainly in the plane of the bar. Under Srhpvr s pr vpyqvt xvpxihpx some cutting circumstances the bar Fvpxihpx) moves towards the operator, who may Xh vt Kickback may occur when suffer severe or fatal injury. Reactive forces may occur any time the the moving saw chain near chain is rotating. Reactive forces can be the upper quadrant of the Kickback may occur when the nose of dangerous! In any chainsaw, the bar nose contacts a solid the guide bar is pinched unexpectedly, object or is pinched. unintentionally contacts solid material in the wood or is incorrectly used to begin a plunge or boring cut.

! It may also occur during limbing. a) saws with a displacement of less than angles that may occur in real life cutting The greater the force of the kickback 3.8 cubic inches situations. reaction, the more difficult it becomes for – must, in their original condition, In addition, features designed to reduce the operator to control the saw. Many meet a 45° computer derived kickback injuries may lose some of their factors influence the occurrence and kickback angle when equipped with effectiveness when they are no longer in force of the kickback reaction. These certain cutting attachments. their original condition, especially if they include chain speed, the speed at which – and must be equipped with at least have been improperly maintained. the bar and chain contact the object, the two devices to reduce the risk of Compliance with § 5.11 of angle of contact, the condition of the kickback injury, such as a chain ANSI B 175.1-2000 does not automatic- chain and other factors. brake, low kickback chain, reduced ally mean that in a real life kickback the kickback bar, etc. bar and chain will rotate at most 45°. The type of bar and saw chain you use is an important factor in the occurrence b) saws with a displacement of 3.8 cubic Xh vt and force of the kickback reaction. inches and above Some STIHL bar and chain types are – must be equipped with at least one designed to reduce kickback forces. device designed to reduce the risk inch displacement to comply with the STIHL recommends the use of reduced of kickback injury such as a chain computed kickback angle requirements kickback bars and low kickback chains. brake, low kickback chain, reduced of § 5.11 of ANSI B 175.1-2000 use only kickback bar, etc. the following cutting attachments:

6ITD 7 &$ (( puhvh xvpxihpx The computer derived angles for saws – bar and chain combinations listed as hqh q below 3.8 cubic inch displacement are complying in the “Specifications” measured by applying a computer section of the Owner’s Manual or Section 5.11 of ANSI standard B 175.1– program to test results from a kickback – other replacement bar and chain 2000, sets certain performance and test machine. combinations marked in accordance design criteria related to chainsaw with the standard for use on the kickback. powerhead or To comply with section 5.11 of ANSI B Xh vt – replacement chain designated 175.1-2000: The computer derived angles of § 5.11 of “low kickback saw chain’’. ANSI B 175.1-2000 may bear no rela- See the section on "Low kickback saw tionship to actual kickback bar rotation chain and reduced kickback bars"

In order for powerheads below 3.8 cubic 9rvpr s rqpvt ur vx s xvpxihpx vw Xh vt Never operate your chainsaw without a STIHL recommends the use of the STIHL front hand guard. In a kickback situation Quickstop chain brake on your power- this guard helps protect your left hand or head with green labeled reduced kick- other parts of your body. In addition, back bars and low kickback chains. removal of the hand guard on a saw equipped with a chain brake will deactivate the chain brake. Xh vt To reduce the risk of injury, stop using the saw immediately if the chain brake Xh vt does not function properly. Take the saw No Quickstop or other chain brake to your local STIHL Service Centre! Do device prevents kickback. These devices not use the saw until the problem has are designed to reduce the risk of been rectified (see the section “Chain kickback injury, if activated, in certain Brake”). kickback situations. In order for the Quickstop to reduce the risk of kickback

001BA036 LA injury, it must be properly maintained Rvpx puhv i hxr and in good working order. See the When a kickback occurs, the guide bar chapter entitled “Chain Brake” and STIHL has developed a chain stopping may rotate around the front handle. If the “Maintenance, Repair and Storing” of system designed to reduce the risk of cutting position is such that the operator’s your Owner’s Manual. In addition, there injury in certain kickback situations. left hand is gripping the front handle must be enough distance between the It is called a Quickstop chain brake. behind the hand guard, and if the left bar and the operator to ensure that the The Quickstop is available as standard hand rotates around the front handle and Quickstop has sufficient time to activate equipment on your STIHL chainsaw and makes a sufficiently forceful contact with and stop the chain before potential is available for installation on most older the front hand guard, which is the Quick- contact with the operator. STIHL saws. Ask your dealer to retrofit stop activating lever, this contact will your older model saw with a chain brake. 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.

# reduce the risk of kickback injury. Other Please ask your STlHL dealer to properly Xh vt chains are designed to obtain higher cut- match your powerhead with the appro- An improperly maintained chain brake ting efficiency or sharpening ease but priate bar/chain combinations to reduce may increase the time needed to stop may result in higher kickback tendency. the risk of kickback injury. Green labeled the chain after activation, or may not bars and chains are recommended for all activate at all. STIHL has developed a color code powerheads. See your “STIHL Bar and system to help you identify the STIHL Chain Information” leaflet for details. Xh vt reduced kickback bars and low kick- Never run the chainsaw above idle back chains. Cutting attachments with speed for more than 3 seconds when green warning decals or green labels on Xh vt the chain brake is engaged or the chain the packaging are designed to reduce Use of other, non-listed bar/chain combi- is pinched or otherwise caught in the cut. the risk of kickback injury. The matching nations may increase kickback forces Clutch slippage can cause excessive of green decaled powerheads under 3.8 and increase the risk of kickback injury. heat, leading to severe damage of the cubic inch displacement with green New bar/chain combinations may be motor housing, clutch and oiler compo- labeled bars and green labeled chains developed after publication of this litera- nent and may interfere with the operation gives compliance with the computed ture, which will, in combination with of the chain brake. If clutch slippage in kickback angle requirements of ANSI B certain powerheads, comply with § 5.11 excess of 3 seconds has occured, allow 175.1-1991 when the products are in of ANSI B 175.1-2000. Check with your the motor housing to cool before pro- their original condition. Products with STIHL dealer for such combinations. ceeding and check the operation of your yellow decals or labels are for users with chain brake as described in the chapter extraordinary cutting needs and entitled “Chain Brake”. Also make sure experience and specialized training for Xh vt that the chain is not turning at idle speed dealing with kickback. Reduced kickback bars and low kickback (see above “Important Adjustments”). chains do not prevent kickback, but they TUDCG rprq ur r s v are designed to reduce the risk of kick- t rr yhiryrq rqprq xvpxihpx ih back injury. They are available from your G xvpxihpx h puhv hq rqprq t rr yhiryrq y xvpxihpx puhv STIHL dealer. xvpxihpx ih < hq h TUDCG Rvpx puhv i hxr s iu rr vrprq hq vrr STIHL offers a variety of bars and vrprq puhvh r Xh vt chains. STIHL reduced kickback bars Even if your saw is equipped with a and low kickback chains are designed to Quickstop, a reduced kickback bar and/or low kickback chain, this does not eliminate the risk of injury by kickback. Therefore, always observe all safety precautions to avoid kickback situations.

$ G xvpxihpx puhv kickback energy. Improper lowering or U hvq xvpxihpx sharpening of the depth gauges or Some types of saw chain have specially shaping of the cutters may increase the The best protection from personal injury designed components to reduce the chance and the potential energy of a that may result from kickback is to avoid force of nose contact kickback. STIHL kickback. Always cut with a properly kickback situations: has developed low kickback chain for sharpened chain. your powerhead. 1. Hold the chainsaw firmly with both hands and maintain a secure grip. “Low kickback saw chain” is a chain Srqprq xvpxihpx ih 2. Be aware of the location of the guide which has met the kickback performance bar nose at all times. requirements of § 5.11.2.4 of STIHL green labeled reduced kickback 3. Never let the nose of the guide bar ANSI B 175.1-2000 (Safety Require-e bars are designed to reduce the risk of contact any object. Do not cut limbs ments for Gasolin e-Powered Chain- kickback injury when used with STIHL with the nose of the guide bar. Saws) when tested in its original green labeled low kickback chains. Be especially careful when cutting condition on a selected repre- small, tough limbs, small size brush sentative sample of chainsaws below and saplings which may easily catch 3.8 cubic inch displacement specified in Xh vt the chain. ANSI B 175.1-2000. When used with other, more aggressive 4Don’t overreach. chains, these bars may be less effective 5. Don’t cut above shoulder height. Warning! in reducing kickback, and may result in 6. Begin cutting and continue at full There are potential powerhead and bar higher kickback forces. throttle. combinations with which low kickback 7. Cut only one log at a time. saw chains can be used which have not 8. Use extreme caution when reentering been specifically certified to comply with 7 Bvqr a previous cut. the 45° computer derived kickback angle 9. Do not attempt to plunge cut if you of § 5.11 of ANSI B 175.1-2000. Xh vt are not experienced with these Some low kickback chains have not Do not mount a bow guide on any cutting techniques. been tested with all powerhead and bar STIHL chainsaw. 10. Be alert for shifting of the log or other combinations. Any chainsaw equipped with a bow forces that may cause the cut to guide is potentially very dangerous. close and pinch the chain. Xh vt The risk of kickback is increased with a 11. Maintain saw chain properly. Cut with A dull or improperly sharpened chain bow guide because of the increased a correctly sharpened, properly may reduce or negate the effects of the kickback contact area. Low kickback tensioned chain at all times. design features intended to reduce chain will not significantly reduce the risk 12. Stand to the side of the cutting path of kickback injury when used on a bow of the chainsaw. guide.

% 8vt Urpuvr

Aryyvt

Felling is cutting down a tree.

Ä Before felling a tree, consider carefully all conditions which may affect the direction

001BA037 L 001BA038 L of fall, including:

6 2 Qyyv) 7 2 Quihpx) The intended direction of the fall.

Pull-in occurs when the chain on the Pushback occurs when the chain on the The natural lean of the tree. bottom of the bar is suddenly stopped top of the bar is suddenly stopped when when it is pinched, caught or encounters it is pinched, caught or encounters a Any unusually heavy limb structure. a foreign object in the wood. The reaction foreign object in the wood. The reaction of the chain pulls the saw forward and of the chain drives the saw straight back Surrounding trees and obstacles. may cause the operator to lose control. toward the operator and may cause loss of saw control. Pushback frequently The wind direction and speed. Pull-in frequently occurs when the occurs when the top of the bar is used for bumper spike of the saw is not held cutting. securely against the tree or limb and when the chain is not rotating at full U hvq uihpx Xh vt speed before it contacts the wood. Always observe the general condition of 1. Be alert to forces or situations that the tree. Inexperienced users should may cause material to pinch the top never attempt to cut trees which are Xh vt of the chain. decayed or rotted inside or which are Use extreme caution when cutting small leaning or otherwise under tension. size brush and saplings which may easily 2. Do not cut more than one log at a time. There is an increased risk that such trees catch the chain and pull you off balance. could snap or split while being cut and 3. Do not twist the saw when cause serious or fatal injury to the U hvq yyv withdrawing the bar from a plunge operator or bystanders. Also look for 1. Always start a cut with the chain cut or underbuck cut because the broken or dead branches which could rotating at full speed and the bumper chain can pinch. vibrate loose and fall on the operator. spike in contact with the wood. When felling on a slope, the operator 2. Pull-in may also be prevented by using should stand on the uphill side if wedges to open the kerf or cut. possible.

& Ä

1 1/2 1 21/2

001BA088 L

Aryyvt D pv)

When felling, maintain a distance of at least 21/2 tree lengths from the nearest person.

Ä When felling in the vicinity of roads, railways and power lines, etc., take extra

001BA040 L precautions. Inform the police, utility 001BA041 L company or railway authority before beginning to cut. @phr hu 7 r Xh vt First clear the tree base and work area If the tree has large buttress roots, cut The noise of your engine may drown any from interfering limbs and brush and into the largest buttress vertically first warning call. clean its lower portion with an ax. (horizontally next) and remove the resulting piece. Xh vt Then, establish two paths of escape (7) There are a number of factors that may and remove all obstacles. These paths affect and change the intended direction should be generally opposite to the plan- of fall, e.g. wind, lean of tree, sloping ned direction of the fall of the tree (6) ground, one-sided limb structure, wood and about at a 45° angle. Place all structure, decay, snow load, etc. To re- tools and equipment a safe distance away duce the risk of severe or fatal injury to from the tree, but not on the escape paths. yourself or others, look for these conditions prior to beginning the cut, and be alert for a change in direction during fall.

' Ä

001BA042 L 001BA019 KN

Bvt vtu 8rvhy p Prshpr rpuvr

When making the felling notch, use the 6 2 felling notch - determines the 6 = felling notch - determines the gunning sight on the shroud and housing direction of the fall direction of the fall to check the required direction of fall: For a conventional cut: For an open-face cut: • Position the saw so that the gunning sight points exactly in the • Properly place felling notch • Properly place felling notch direction you want the tree to fall. perpendicular to the Iine of fall, perpendicular to the Iine of falI, close to the ground close to the ground • Cut down at app. 45-degree angle • Cut down at app. 50-degree angle to a depth of about 1/5 to 1/4 of the to a depth of app.1/5 to 1/4 of the trunk diameter trunk diameter • Make second cut horizontal • Make second cut from below at • Remove resulting 45-degree piece app. 40 degree angle • Remove resulting 90-degree piece

( Ä

Ä Ä

001BA043 L

001BA044 L 001BA045 L

Hhxvt hq p 7 2 Aryyvt p 8 2 Cvtr Conventional and open-face technique: • Helps control the falling tree • For medium sized or larger trees • Begin 1 to 2 inches higher than • Do not cut through the hinge - make cuts at both sides of the trunk, center of felling notch you could lose control of the • at same height as subsequent • Cut horizontalIy towards the felling direction of the fall felling cut. notch Xh vt • Cut to no more than width of guide • Leave approx.1/10 of diameter uncut. bar. This is the hinge In order to reduce the risk of personal • Do not cut through the hinge – injury, never stand directly behind the This is especially important in soft you could lose control of the tree when it is about to fall, since part of wood in summer - it helps prevent direction of the fall the trunk may split and come back sapwood splintering when the tree Drive wedges into the felling cut where towards the operator (barber-chairing), falls. necessary to control the fall. or the tree may jump backwards off the stump. Always keep to the side of the Xh vt falling tree. When the tree starts to fall, If the tip of the bar contacts a wedge, withdraw the bar, shut off the engine and it may cause kickback. Wedges should walk away on the preplanned escape be of wood or plastic – never steel, path. Watch out for falling limbs. which can damage the chain.

! Ä

Ä Ä

001BA047 L

001BA046 L 001BA048 L

Aryyvt p s yh tr qvhrr rr) Avoid repositioning the saw more than Xh vt necessary. When repositioning for the Be extremely careful with partially fallen Xh vt next cut, keep the guide bar fully engaged trees which are poorly supported. Felling a tree that has a diameter greater in the kerf to keep the felling cut straight. When the tree hangs or for some other than the length of the guide bar requires If the saw begins to pinch, insert a reason does not fall completely, set the use of either the sectioning felling cut or wedge to open the cut. On the last cut, saw aside and pull the tree down with a plunge-cut method. These methods are do not cut the hinge. cable winch, block and tackle or tractor. extremely dangerous because they If you try to cut it down with your saw, involve the use of the nose of the guide you may be injured. bar and can result in kickback. Only Qytrp ruq properly trained professionals should Aryyvt p s hyy qvhrr rr) attempt these techniques. Timber having a diameter more than vyr sh p twice the length of the guide bar requires Trpvvt ruq the use of the plunge-cut method before Engage the bumper spikes of the chain- For the sectioning method make the first making the felling cut. saw directly behind the location of the part of the felling cut with the guide bar intended hinge and pivot the saw around fanning in toward the hinge. Then, using this point only as far as the hinge. The the bumper spike as a pivot, reposition bumper spike rolls against the trunk. the saw for the next cut.

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

Ä Gvivt Limbing is removing the branches from a fallen tree.

001BA089 L Xh vt First, cut a large, wide felling notch. There is an extreme danger of kickback Make a plunge cut in the center of the during the limbing operation. Do not notch. work with the nose of the bar. Be extremely cautious and avoid contacting the log or The plunge cut is made with the guide other limbs with the nose of the guide bar. bar nose. Begin the plunge cut by Ä applying the lower portion of the guide Do not stand on a log while limbing it – bar nose to the tree at an angle. Cut until you may slip or the log may roll. the depth of the kerf is about the same as 001BA033 L the width of the guide bar. Next, align Start limbing by leaving the lower limbs to the saw in the direction in which the support the log off the ground. When 7pxvt recess is to be cut. underbucking freely hanging limbs, Bucking is cutting a log into sections. a pinch may result or the limb may fall, With the saw at full throttle, insert the causing loss of control. If a pinch occurs, Xh vt guide bar in the trunk. stop the engine and remove the saw, 1. When bucking, do not stand on the by lifting the limb. log. Make sure the log will not roll Enlarge the plunge cut as shown in downhill. If on a slope, stand on the illustration. Xh vt uphill side of the log. Be extremely cautious when cutting Watch out for rolling logs. Xh vt limbs or logs under tension (spring poles). There is an extreme danger of kickback The limbs or logs could spring back at this point. Extra caution must be taken toward the operator and cause loss of to maintain control of the saw. To make control of the saw and severe or fatal the felling cut, follow the sectioning injury to the operator. method described previously.

!! H6DIU@I6I8@ S@Q6DS 6I9 TUPSDIB

Hhvrhpr ryhprr rhv s ur rvv p y qrvpr hq r h ir r s rq i h hq rtvr rhv rhiyvur vqvvqhy Crr vs pyhv h h s h pr uvpu uh irr r vprq hvhvrq r y vs h rq ryhprr h r r rq TUDCG h qr h h

Never operate a chainsaw that is Ä Ä damaged, improperly adjusted or not completely or securely assembled. Follow the maintenance and repair 001BA051 L 001BA050 L instructions in the appropriate section of your Owner’s Manual, especially those 2. Cut only one log at a time. 5. Logs under strain: Risk of pinching! in the chapters “Mounting the Bar and Always start relieving cut ( ) at Chain”, “Maintaining and Sharpening” 3. Shattered wood should be cut very compression side (6). and “Chain Brake”. carefully. Sharp slivers of wood Then make bucking cut (!) at may be caught and flung in the tension side (7). direction of the operator of the saw. If the saw pinches, stop the engine Xh vt and remove it from the log. Use only STIHL replacement parts for 4. When cutting small logs, place log maintenance and repair. Use of parts through “V” - shaped supports on 6. Only properly trained professionals manufactured by others may cause top of a sawhorse. Never permit should work in an area where the serious or fatal injury. another person to hold the log. logs, limbs and roots are tangled. Never hold the log with your leg or Working in blowdown areas is Xh vt foot. extremely hazardous. Always stop the engine and ensure that the chain is stopped before making any 7. Drag the logs into a clear area before adjustments, maintenance or repair work, cutting. Pull out exposed and cleared logs first.

!" changing the saw chain or cleaning the result. If your muffler was equipped with For the proper and effective operation of saw. Do not attempt any maintenance or a spark-arresting screen to reduce the the chain brake the brake band and repair work not described in your risk of fire (e. g. in the USA, Canada and clutch drum must be kept free of dirt, Owner’s Manual. Have such work perfor- Australia), never operate your saw if the grease and other foreign matter which med at your STIHL service shop only. screen is missing or damaged. Remem- may reduce friction of the band on the ber that the risk of forest fires is greater drum. Xh vt in hot or dry weather. Never test the ignition system with Keep the chain, bar and sprocket clean; For these reasons, each STIHL chain- ignition wire terminal removed from spark replace worn sprockets or chains. saw should be returned to trained plug or with unseated spark plug, since Keep the chain sharp. personnel such as your STIHL servicing uncontained sparking may cause a fire. You can spot a dull chain when easy-to- dealer for periodic inspection and cut wood becomes hard to cut and burn servicing of the brake system according Xh vt marks appear on the wood. to the following schedule: To reduce the risk of fire and burn injury, Keep the chain at proper tension. Tighten Heavy usage - every three months, use only spark plugs authorized by all nuts, bolts and screws except the Moderate usage - twice a year, STIHL. Always press spark plug boot carburetor adjustment screws after each Occasional usage - annually. snugly onto spark plug terminal of the use. proper size. (Note: If terminal has The chainsaw should also be returned detachable SAE adapter nut, it must be Xh vt immediately for maintenance whenever attached.) A loose connection between In order for the chain brake on your the brake system cannot be thoroughly spark plug terminal and ignition wire STIHL chainsaw to properly perform its cleaned or there is a change in its connector in the boot may create arcing function of reducing the risk of kickback operating characteristics. that could ignite combustible fumes and and other injuries, it must be properly cause a fire. Keep spark plug clean, and maintained. Like an automobile brake, For any maintenance please refer to the make sure ignition lead is in good a chainsaw chain brake incurs wear maintenance chart hq ur h h condition. each time it is engaged. hrr near the end of this manual. Xh vt The amount of wear will vary depending Additionally, the daily maintenance Do not operate your chainsaw if the upon usage, conditions under which the schedule for your chainsaw set forth in muffler is damaged, missing or modified. saw is used and other factors. Excessive your STIHL Owner’s Manual should be An improperly maintained muffler will wear will reduce the effectiveness of the strictly followed. increase the risk of fire and hearing loss. chain brake and can render it inoperable. Never touch a hot muffler or burn will 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).

!# Hvtur7h hq8uhv Top: Unscrewing collar nut Center: Removing pan head screw (on machines without chain brake) Chain brake disengaged Bottom: Backing off tensioning nut

3 1

125BA000 LA 125BA001 LA

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. The drive link gauge must match the guide bar groove width.

The guide bar and Oilomatic chain are supplied separately. To mount them, first unscrew the collar nut and - if your machine does not have a chain brake - take out the pan head srew ! and remove the sprocket cover ". If you have a Quickstop model, the chain brake must be disengaged before you remove the sprocket cover by pulling the 2 3 hand guard toward the front handle. 125BA002 LA

Now back off the tensioning nut # by turning the tensioning screw $ counterclockwise until the end of its thread is level with the tensioning nut.

Locate the slot of the guide bar over the stud bolt % and push it at an angle between the clutch drum of the sprocket & and the peg of the tensioning nut # until the stud bolt % is at the forward end of the slot.

To protect yourself from being injured by the sharp cutting edges you should always wear gloves when fitting the saw 5 chain and guide bar or tensioning and checking the chain. 4 125BA003 LA !$ Top: Fitting the chain Center: Peg in fixing hole - cutting edges point toward bar nose Locating the guide bar Bottom: Drive link tang

7 6 79 8

125BA004 LA

125BA005 LA

Starting at the chain sprocket &, place the Oilomatic chain on the guide bar so that the cutting edges on the top of the bar point toward the bar nose '. Now pull the guide bar forwards until the peg of the tensioning nut # engages the lower fixing hole (. The bar should now fit against the housing.

Now tension the chain by turning the tensioning screw $ clockwise until the chain sags only slightly at the bottom of the bar. Make sure that the drive link tangs are located in the bar groove. 4

125BA006 LA Refit the sprocket cover ", making sure that the rear of the sprocket cover locates in the housing seat below the rear handle as you push it over the stud bolt %. On Quickstop models the chain brake must be disengaged and the top end of the lever (11) must be located in the slot in the hand guard !.

10 !% 125BA007 LA Top: Tensioning the chain Center: Holding bar nose and tightening the hexagon nut Fitting the sprocket cover Bottom: Checking chain tension

12 11

125BA008 LA 36 5 125BA009 LA

Fit collar nut on the stud bolt %. On machines without a chain brake, also fit the pan head screw (2). Both the collar nut and pan head screw should only be screwed down temporarily at this stage.

Hold the bar nose ' up and turn the tensioning screw $ until the Oilomatic chain is properly seated on the underside of the bar.

The Oilomatic chain is correctly tensioned when it fits snugly against the underside of the bar but can still be pulled easily along the bar. 1 8 125BA010 LA

After finally tensioning the chain, again hold the bar nose up and securely tighten down the collar nut and - on machines without chain brake - the pan head screw !.

Chain tension and lubrication are extremely important in respect of the cutting results obtained and the service life of the whole cutting attachment. Chain lubrication must always be checked before you start cutting. Chain tension should be checked frequently during cutting and corrected as necessary. See chapter "Guide Bar, Chain and Sprocket" for further details.

125BA011 LA !& )XHO )XHOLQJ

This engine is certified to operate on We recommend STIHL 50:1 two-stroke unleaded gasoline and oil with the engine oil since it is specially formulated mix ratio 50:1. for use in STIHL engines. Your two-stroke engine requires a Do not use BIA or TCW (two-stroke mixture of brand-name gasoline and water cooled) mix oils! quality two-stroke engine oil with the FODVVLILFDWLRQ 7& Take care when handling gasoline. Avoid direct contact with the skin and Use regular branded unleaded gasoline avoid inhaling fuel vapour with a minimum octane rating of (see “Safety Precautions”). 90 ROZ (U.S.A./Canada: pump octane MIX min. 89!). If the octane number of the The canister should be kept tightly regular grade gasoline in your area is closed in order to avoid any moisture lower, use premium unleaded fuel. getting into the mixture. Fuel with a lower octane rating may result in preignition (causing “pinging”) The fuel tank and the canister in which which is accompanied by an increase in fuel mix is stored should be cleaned engine temperature. This, in turn, from time to time. increases the risk of piston seizure and damage to the engine. )XHO PL[ DJHV Only mix sufficient fuel for a few days Before fueling, clean the fuel filler cap The chemical composition of the fuel is work, not to exceed 3 months of storage. and the area around it to ensure that no also important. Some fuel additives not Store in approved safety fuel-canisters dirt falls into the tank. only detrimentally affect elastomers only. When mixing, pour oil into the Always thoroughly shake the mixture in (carburetor diaphragms, oil seals, fuel canister first, and then add gasoline. the canister before fueling your machine. lines etc.), but magnesium castings as well. This could cause running problems Gaso- Oil (STIHL 50:1 or :DUQLQJ or even damage the engine. For this line equivalent branded TC oils) In order to reduce the risk of burns or reason it is essential that you use only US gal. US fl.oz other personal injury from escaping gas branded fuels! vapor and fumes, remove the fuel filler Use only STIHL two-stroke engine oil or 1 2.6 cap carefully so as to allow any pressure equivalent branded two-stroke air- 2 1/2 6.4 build-up in the tank to release slowly. cooled engine oils with the classification 512.8 :DUQLQJ TC for mixing. Dispose empty mixing-oil canisters only After fueling, tighten fuel cap DV at authorized disposal locations. VHFXUHO\ DV SRVVLEOH by hand. Use a suitable tool (e.g. screwdriver end of combination wrench) to tighten slotted fuel caps.

&KDLQ OXEULFDQW )LOO FKDLQ OXEULFDQW

For automatic and reliable lubrication of the chain and guide bar: 8VH RQO\ D TXDOLW\ HQYLURQPHQWDOO\ FRPSDWLEOH FKDLQ DQG EDU OXEULFDQW 67,+/ FKDLQ OXEULFDQW ZLWK QRQIOLQJ DGGLWLYH RU WKH UDSLGO\ ELRGHJUDGDEOH 67,+/ %LRSOXV LV UHFRPPHQGHG

,PSRUWDQW Biological chain oil must be resistant to aging (e.g. STIHL Bioplus) MIX since it will otherwise quickly turn to resin. This results 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 Change the fuel pick up body every year. lubricant. • Thoroughly clean the oil filler cap and the area around it to ensure Before storing your machine for a long If special chain lubricant is not available, that no dirt falls into the tank. period, drain and clean the fuel tank and you may - in an emergency - use an HD run engine until carburetor is dry. single grade or multigrade engine oil • Refill the chain oil tank every time with a viscosity that suits the prevailing you refuel. outside temperature. There must still be a small amount of oil in the oil tank when the fuel tank is :DUQLQJ empty. Medical studies have shown that If the oil tank is still partly full, the reason renewed contact with waste oil can may be a problem in the oil supply cause skin cancer. Avoid direct contact system: with waste oil. If waste oil does get on Check chain lubrication, clean the your skin, wash with soap and water. oil passages, contact your STIHL dealer 'R QRW XVH waste oil for any purpose, for assistance if necessary. and dispose of it only at authorized disposal locations.

&KDLQ %UDNH

7KH FKDLQ EUDNH LV DOVR DFWLYDWHG E\ WKH LQHUWLD RI WKH IURQW KDQG JXDUG 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.

&KHFN RSHUDWLRQ RI FKDLQ EUDNH

Before starting work: Run engine at idle speed, engage the chain brake (push hand guard toward bar nose).

125BA032 LA 125BA031 LA Accelerate up to full throttle for no more than 3 seconds - the chain must not /RFNLQJ FKDLQ ZLWK FKDLQ EUDNH 5HOHDVLQJ WKH FKDLQ EUDNH rotate. The hand guard must be free of dirt and move freely. - in an emergency • Pull the hand guard back toward - when starting the front handle. - at idling speed. &KDLQ EUDNH PDLQWHQDQFH 1RWH Always disengage chain brake • The chain is stopped and locked before accelerating engine and before The chain brake is subject to normal when the hand guard is pushed starting cutting work. The only exception wear and tear. It must therefore be toward the bar nose by the left hand - to this rule is when you check operation checked and serviced regularly by or when brake is activated by inertia of the chain brake. High revs with the trained personnel (e.g. STIHL dealer) at in certain kickback situations. chain brake engaged (chain locked) will the following intervals: quickly damage the powerhead and chain drive (clutch, chain brake). Full-time professional users: every 3 months Semi-professional users: every 6 months Occasional users: every 12 months

'XULQJ %UHDNLQ 3HULRG 'XULQJ 2SHUDWLRQ $IWHU )LQLVKLQJ :RUN

A factory new machine should not be &KHFN FKDLQ WHQVLRQ IUHTXHQWO\ • Slacken off the chain - run at high revs (full throttle off load) A new chain has to be retensioned more if you have retensioned it at for the first three tank fillings. This avoids often than one that has been in use for operating temperature during unnecessary high loads during the some time. cutting work. break-in period. The chain contracts as it cools down. &KDLQ FROG If it is not slackened off, it could damage As all moving parts have to bed in Tension is correct when chain fits snugly the crankshaft and bearings. during the break-in period, the frictional against the underside of the bar and can resistances in the engine are greater still be pulled along the bar by hand. %HIRUH VWRULQJ \RXU VDZ during this period. The engine develops Retension if necessary - IRU D ORQJ SHULRG its maximum power after about 5 to 15 see section "Tensioning the Saw Chain". tank fillings. See chapter "Storing the Chain Saw". &KDLQ DW RSHUDWLQJ WHPSHUDWXUH 'R QRW PDNH WKH PL[WXUH OHDQHU WR The chain stretches and begins to sag. DFKLHYH DQ DSSDUHQW LQFUHDVH LQ The drive links must not come out of the SRZHU WKLV FRXOG GDPDJH WKH HQJLQH bar groove - the chain may otherwise VHH VHFWLRQ 3$GMXVWLQJ &DUEXUHWRU3 jump off the bar.

1RWH Always disengage chain brake Retension the chain - before accelerating engine and before see section "Tensioning the Saw Chain". starting cutting work. High revs with the chain brake engaged (chain locked) will Always slacken off the chain after quickly damage the powerhead and finishing work. chain drive (clutch, chain brake). The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings.

$IWHU ORQJ SHULRG RI IXOOWKURWWOH RSHUDWLRQ Allow engine to run for a short while at idling speed so that engine heat can be dissipated by flow of cooling air. This protects engine-mounted components (ignition, carburetor) from thermal overload.

6WDUWLQJ Top: Stop switch away from G Center: Choke slide on I - cold start Chain brake engaged Bottom: Starting throttle position

1 2

125BA012 LA

125BA013 LA

Before starting your saw, make sure you have a firm foothold and check that the saw chain is not touching the ground or any other obstacles. Bystanders must be kept well clear of the general work area of the saw.

6WDUWLQJSURFHGXUH 3 1. Engage the chain brake by pushing the hand guard towards the bar nose.

2. Move stop switch away from I. 125BA014 LA

3. If engine is cold, move choke slide to I. This also applies if the engine has been running but is still cold. If engine is warm, move choke slide away from I. 6 4. Set throttle trigger to start position by pressing the safety throttle lock , throttle trigger and starting 5 throttle lock in that order. Then let go of throttle 4 trigger first and then the starting throttle lock .

125BA016 LA Top: Starting (saw on ground) Starting (saw between legs) Bottom: Idle position

8 8

7 7

125BA017 LA

125BA018 LA

5. You can hold the saw in one of two ways for starting:

5.1 6DZEHWZHHQOHJV Hold the rear handle tightly between your legs, just above the knees. Grip the front handle () securely 6 with your left hand.

5.2 6DZRQJURXQG Hold the saw firmly on the ground with your left hand on the front handle ().

6. Pull starter grip slowly with your right hand until 125BA019 LA you feel the starter engage and then give it a quick, strong pull. Do not pull out starter rope more than 7. Pull starter rope three or four times, then move choke 70 cm (27.5 in) as it might otherwise break. slide away from I. If the engine fires while you are cranking it over, immediately open the choke. Then Do not allow starter grip to snap back. Guide it continue cranking. back slowly so that starter rope can rewind correctly. As soon as engine is running,LPPHGLDWHO\ blip the throttle trigger to release the starting throttle lock so that the engine can settle down to idle speed. The clutch can be damaged if the engine is not LPPHGLDWHO\ returned to idle speed! Top: Chain brake disengaged Bottom: Stop switch in G position

2WKHUSRLQWVWRREVHUYHZKHQVWDUWLQJWKHHQJLQH 1 The choke lever is mechanically connected to the carburetor’s choke valve. The choke valve is closed when the choke lever is on I and open when the choke lever is moved away from I.

When starting a cold engine only keep the choke slide in the I position until the engine begins to fire. Even if you do not hear the engine firing, always open the choke after pulling the starter rope three or four times. If you leave the choke

125BA020 LA slide in the I position, the combustion chamber will flood and stall the engine.

If you have moved the choke slide away from I after the engine has fired or after three or four pulls on the starter rope and the engine still refuses to start, you can assume 2 that the combustion chamber is already flooded. In such a case, remove and dry off the spark plug. With the spark plug still removed and the stop switch on G, clear the combustion chamber by cranking the engine several times on the starter. When you now try to start, move the choke lever away from I and set the throttle trigger to the start position. The stop switch should again be moved away from G.

125BA021 LA In very cold weather only open the choke partially after the 8. Disengage the chain brake before starting cutting work engine begins to fire – move choke lever to about the center by pulling the hand guard back toward the handle- position. Allow engine to warm up for a brief period with the bar . throttle in the start position. Then move choke lever completely away from I and disengage the starting throttle 9. The engine is shut down by sliding the stop switch lock. to G. A new engine or one which has been run until the fuel tank is dry will not start first time after fueling because the fuel pump only begins to deliver sufficient fuel of the carburetor after the engine has been turned over a few times on the starter. *XLGH%DU&KDLQDQG6SURFNHW

Checking chain lubrication *XLGH%DU

The nose and underside of the guide bar are subject to a particularly high rate of wear. To avoid one-sided wear, turn the bar over every time you resharpen or preplace the chain. Regular cleaning of the oil inlet holes and guide bar groove is also important. The bar can be examined for signs of wear at the same time.

A minimum bar groove depth must be maintained in order to prevent the drive links contacting the bottom of the groove

(the heels of the cutter and tie strap would no longer on the 125BA022 LA guide bar rails). The groove depth varies according to chain type and pitch: %UHDNLQJLQ2LORPDWLF&KDLQ

Chain type Chain pitch Minumum depth Every new chain has to be broken in for about 2 to 3 minutes. Ample chain lubrication is essential during this period. After Picco 3/8 " 5 mm (0.2") breaking in, stop the engine, check chain tension and adjust if necessary. The groove depth should be measured at the point where the bar is stressed most. That is the bar nose on Duromatic bars and the area where most of the cutting is done in &KDLQ/XEULFDWLRQ Rollomatic bars. The guide bar must be replaced when groove depth is less than the specified minimum. Never operate the chain saw without proper chain lubrication. If the chain is allowed to run dry the whole cutting On Rollomatic guide bars it is not necessary to separately attachment will be irretrievably damaged within a very short lubricate the sprocket nose bearing because the chain oil time. For this reason you should always check operation of which flows to the bearing by way of the bar groove during the chain lubrication system and the level in the oil tank normal operation is adequate for lubrication. before starting work.

Start the saw and hold the cutting attachment over a light patch of ground. Take care – the Oilomatic chain must not touch the ground; hold it at least 20 cm (8 in) clear of the ground. Run the engine at about half throttle. If an increasing film of oil can be seen on the ground, chain lubrication is operating correctly. If this is not the case, refer to "Trouble- shooting on Chain Oiling System". Worn chain sprocket &KDLQ7HQVLRQ

Apart from chain lubrication, chain tension is the factor that has the greatest influence of the cutting attachment’s useful life. It is therefore necessary to check chain tension before starting work and at regular short intervals during cutting work. Chain tension is correct in the cold condition when the chain fits snugly against the underside of the bar and can still be pulled along the bar by hand (wear gloves!).

As it warms up to normal operating temperature the chain

expands and sags noticeably. The saw chain must be 125BA023 LA retensioned when the drive links begin to come out of the groove on the underside of the bar. If this is not done, there &KDLQ6SURFNHW is a risk of the chain jumping off the bar. The stress and strain on the chain sprocket are particularly If the chain is retensioned during cutting work it must always high. If the wear marks on the teeth are very pronounced be slackened off again after finishing work. This is neces- (about 0.5 mm/0.02 in deep), the sprocket should be sary because high contraction stresses would otherwise replaced. A worn sprocket reduces the service life of the occur as the chain cools down to ambient temperature, saw chain. The chain sprocket should be replaced as a especially at extremely low outside temperatures, and matter of routine with every second Oilomatic chain. It is cause damage to the crankshaft and bearings. best to use saw chains alternately with one sprocket.

A new chain must be retensioned more frequently than a used one because it stretches during the initial break-in period.

7URXEOHVKRRWLQJ RQ&KDLQ2LOLQJ6\VWHP

Removing oil pump Component parts of oil pump in correct sequence

9 7 3 8 6 10 4 2 5

125BA024 LA

125BA025 LA

If you have checked chain lubrication (see chapter "Guide &OHDQLQJWKH2LO3XPS Bar, Saw Chain and Chain Sprocket") and found that no oil is being delivered although the oil tank is full, switch off the Drain the chain oil tank. Remove the fastening screws engine and start looking for the fault on the cutting attach- and withdraw the oil pump. ment. If the oil pump is stuck, use a screwdriver to carefully pry it To do this, remove the chain sprocket cover, guide bar away from the crankcase. and chain. Thoroughly clean the oil inlet holes as well as the passage between the holes and the bar groove. Also Pull off the hose and remove the polymere disc . Take clean away dirt that may have collected at the end of the oil the filter off the stub. Now pull the cover off the pump hose and the area around it. housing, making sure that the diaphragm does not stick to the cover and tear. Now check oil delivery again. If no oil emerges from the hose , the oil pump must be removed from the Take the plunger and diaphragm out of the pump machine and cleaned. housing and remove the two gaskets Note the spring between the pump housing and diaphragm. It must not be lost.

Carefully wash the pump housing, cover, plunger with diaphragm and the filter in clean gasoline. Thoroughly clean the gaskets and flange faces on the crankcase.

Reassemble the pump by reversing the above sequence. Coat the plunger with a little lubricating oil before refitting. $LU)LOWHU

Top: Unscrewing the flat head screw Bottom: Filter cover removed

The air filter’s function is to hold back dust and dirt in the intake air and thus reduce wear on engine components to a minimum. 1

Dirty air filters reduce engine power, increase fuel con- sumption and make starting more difficult.

7KHDLUILOWHUPXVWEHFOHDQHGZKHQWKHUHLVDQRWLFHDEOH ORVVRIHQJLQHSRZHU

125BA026 LA

Before removing the filter, clean loose dirt off the filter cover and the area around it to be sure that no dirt can get into the engine through the carburetor when the cover is removed. 2

Take out the M 4 flat head screw to remove the filter cover and air filter element .

,PSRUWDQW

The intake air flows to the underside of the filter element. It 125BA027 LA follows that only the underside of the element becomes dirty. It is therefore necessary to remove the element and Refit the air filter by reversing the above sequence. When turn it over to check its condition. placing the filter cover in position, make sure the lugs engage in the recesses in the crankcase. Also make sure that the choke valve in the filter cover is in good condition. To clean the element, first knock it out on the palm of your hand and then wash it in non-flammable cleaning solution (warm soapy water) and blow out with compressed air if possible. It is best to carry a spare filter with you at all times.

The element must be replaced immediately if the felt shows any signs of damage (tears, holes). $GMXVWLQJ &DUEXUHWRU

0RWRU 0DQDJHPHQW It is usually necessary to change the setting of the idle speed adjusting screw Exhaust emissions are controlled by the /$ after every correction to the low design of the fundamental engine speed screw / . parameters and components (e.g. carburetion, ignition, timing and (QJLQH VWRSV ZKLOH LGOLQJ valve or port timing) without the addition • Turn the idle speed adjusting screw of any major hardware. /$ clockwise until chain begins to run - then back off the screw one quarter of a turn.

&KDLQ UXQV ZKHQ HQJLQH LV LGOLQJ • Turn the idle speed adjusting screw /$ counterclockwise until chain stops running - then turn screw another quarter turn in the same direction.

• Check the air filter and clean it if necessary. (UUDWLF LGOLQJ EHKDYLRXU SRRU DFFHOHUDWLRQ • Warm up the engine. Idle setting is too lean. • Turn the low speed adjusting screw • Turn screws only very slightly and / counterclockwise until engine carefully - even minor changes runs and accelerates smoothly. have a noticeable effect on the engine’s running behavior.

&KHFNLQJ 6SDUN 3OXJ

• 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.

• Fit a new spark plug after approx. 100 operating hours – or earlier if the electrodes are 1 badly eroded. 000BA002 KN 000BA036 TR

Wrong fuel mix (too much engine oil in :DUQLQJ$ the gasoline), a dirty air filter and unfavorable running conditions (mostly To reduce the risk of fire and burn injury, at part throttle etc.) affect the condition of use only spark plugs authorized by the spark plug. These factors cause STIHL (see “Specifications”). Always deposits to form on the insulator nose press spark plug boot snugly onto which may result in trouble in operation. spark plug terminal of the proper size. (Note: If terminal has detachable If engine is down on power, difficult to SAE adapter nut, it must be attached.) start or runs poorly at idling speed, A loose connection between spark plug first check the spark plug. terminal and ignition wire connector in the boot may create arcing that could • Remove spark plug – ignite combustible fumes and cause a see chapter “Starting”: fire. • Clean dirty spark plug. • Check electrode gap – it should be 0.5mm/0.02" $ – readjust if necessary.

5HSODFLQJ WKH &KDLQ 6SURFNHW Top: Locking screw in position Center: Removing the clutch Bottom: Parts in correct order

First disengage the chain brake (pull hand guard back toward front handle) and then remove the chain sprocket cover, guide bar and chain.

Take out the spark plug and screw locking screw into spark plug hole by hand until it is firmly seated.

Turn clutch to rotate crankshaft clockwise until the piston head butts against the lockig srew. Now use a suitable 1 19-mm wrench to unscrew the clutch. 125BA028 LA

&DXWLRQ 7KH FOXWFK KDV D OHIWKDQG WKUHDG XQFUHZ LW FORFNZLVH

After unscrewing the clutch, remove the chain sprocket and needle cage from the crankshaft. Clean the stub of the crankshaft. Wash out needle cage in clean gasoline and lubricate it with anti-friction bearing grease. 2

Examine clutch shoes , springs , retainers and 3 125BA029 LA clutch carrier for cracks. If any damage is found, replace the parts concerned.

Only original STIHL chain sprockets may be installed.

Reverse the above sequence to refit the parts. Take care to ensure that the clutch shoes and retainers are correctly 4 positioned. Securely tighten down the clutch again. 5 6 7 Remove the locking srew, refit and tighten down the spark plug. Fit the spark plug connector. 125BA030 LA Maintaining and Sharpening Saw Chain

Correctly sharpened chain A properly sharpened chain slices A through wood effortlessly and requires very little feed pressure. 3/8 Do not work with a dull or damaged chain as it will increase the physical B effort required, produce unsatisfactory 689BA020 KN results and a higher rate of wear. 689BA021 KN

Clean and check your chain 3 for cracks in the links and damaged The chain pitch (e.g. /8") is marked on A = Filing angle rivets – replace any damaged or worn the depth gauge end of each cutter. B = Side plate angle parts of the chain and match the new Use only special saw chain parts to the shape and size of the sharpening files. Other files have the original parts. wrong shape and cut. Chain type Angle (°) It is absolutely essential to comply Select file diameter according to chain AB with the angles and dimensions pitch – see table “Sharpening Tools” at Rapid-Micro (RM) 30 85 specified below. If the saw chain is the end of this chapter. Rapid-Super (RS) 30 60 incorrectly sharpened – and in You must observe certain angles when particular if the depth gauge is set Picco-Micro (PM/PMN) 30 85 resharpening the chain cutter. too low – there is a risk of increased Cutter shapes: kickback of the chainsaw, with Micro = Semi-chisel resulting risk of injury. Super = Full chisel : Select sharpening tools according The specified angles A and B are to chain pitch. obtained automatically if recommended See “Specifications” for permissible files or sharpening tools and correct chain pitches. settings are used.

42 Furthermore, the angles must be the same on all cutters. If angles are 90¡ uneven: Chain will run roughly, not in a 85¡ 70¡ 60¡ 80¡ straight line, wear quickly and finally break.

30¡ 35¡ 90¡ 10¡ 0¡ 689BA022 KN 689BA018 KN

For checking angles File correctly STlHL filing gauge* (see table). : If you use a file holder, the FG 1 or A universal tool for checking the filing FG 3: 689BA025 KN and side plate angles, depth gauge Leave the chain on the bar. setting and cutter length. Also cleans the : Clamp the bar in a vise if necessary. As these requirements can be met only guide bar groove and oil inlet hole. : after sufficient and constant practice: Lock the chain – push hand guard forward. ::: Use a file holder* : To rotate the chain – pull hand guard A file holder must be used for manual against handle. resharpening of Super chain. The : Sharpen chain frequently, take correct filing angle is marked on the file away as little metal as possible – holder. 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 backstroke.

* Special Accessory * Special Accessory

43 : Hold the file horizontally for all Lowering depth gauges chain types (at right angle to side of The depth gauge setting is reduced guide bar) and file according to the when the chain is sharpened. Use filing angles marked on the filing tool. a gauge to check the setting every time : Avoid touching the tie straps and you sharpen the chain and, if necessary, drive links with the file. lower the depth gauge with a flat or : Rotate the file at regular intervals triangular file so that it is level with the while filing to avoid one-sided wear. filing gauge. 689BA023 KN : Use a piece of hardwood to remove burrs from cutting edge. Depth gauge setting : Check angles with the filing gauge. The depth gauge determines the height All cutters must be the same length. at which the cutter enters the wood and thus the thickness of the chip removed. If the cutters are not the same length, they will have different heights. This Specificed distance or setting between makes the chain run roughly and can depth gauge and cutting edge = a: cause it to break. This setting may be increased by 0.2mm 689BA024 KN Find the shortest cutter and then file all (0.008") for cutting softwood in mild weather season – no frost. other cutters back to the same length. Round off depth gauges parallel to the This can be very time consuming – it is Chain pitch Depth gauge stamped marking. best to have it done in the workshop on an electric grinder. setting “a“ After sharpening Inch (mm) mm (Inch) Clean the chain thoroughly, remove 1 filings or grinding dust – lubricate the /4 (6.35) 0.65 (0.026) 3 chain by immersing it in an oil bath. /8 PMN (9.32) 0.45 (0.018) 3 Before long out-of-service period /8 PM (9.32) 0.65 (0.026) Clean the chain with a brush and 0.325 (8.25) 0.65 (0.026) 3 immerse it in an oil bath. /8 (9.32) 0.65 (0.026) 0.404 (10.26) 0.80 (0.031)

44 Sharpening Tools (special accessories) Chain pitch Round file Ø Round file File holder Filing gauge Flat file Sharpening kit1) Inch (mm) mm (inch) Part No. Part No. Part No. Part No. Part No. 1 5 /4 (6,35) 4,0 ( /32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 3 5 /8 PMN (9,32) 4,0 ( /32) 5605 772 4006 5605 750 4327 0000 893 4000 0814 252 3356 5605 007 1026 3 5 /8 P (9,32) 4,0 ( /32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 3 0.325 (8,25) 4,8 ( /16) 5605 772 4806 5605 750 4328 1110 893 4000 0814 252 3356 5605 007 1028 3 13 /8 (9,32) 5,2 ( /64) 5605 772 5206 5605 750 4329 1110 893 4000 0814 252 3356 5605 007 1029 7 0.404 (10,26) 5,5 ( /32) 5605 772 5506 5605 750 4330 1106 893 4000 0814 252 3356 5605 007 1030

1) consisting of file holder with round file, flat file and filing gauge

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 (very dusty work area tropical wood etc.) shorten the specified intervals accordingly. before starting work after finishing work or daily after each refueling stop weekly monthly if faulty if damaged as required see page: Visual inspection (condition, leaks) xx Complete machine Clean x Throttle trigger , throttle trigger interlock, Master Control, depending on model Check operation xx Check operation xx 30 Chain brake Clean by STIHL dealer x30 Check x29 Filter in fuel tank Clean, replace filterelement x29 Replace pick-up body xx Fuel tank Clean x28 Chain oil tank Clean x Chain lubrication Check x35 Inspect, also check sharpness xx Saw chain Check chain tension xx 36 Sharpen x42 Check (wear, damage) x35 Clean and turn over xx Guide bar Deburr x Replace xx Chain sprocket Check x36 Clean xx38 Air filter Replace x Cooling inlets Clean x Cylinder Clean, remove deposits xx Check idle adjustment – chain must not turn xx 39 Carburetor Readjust idle x Spark plug Replace x40 All accessible screws and nuts (not adjusting screws) Retighten x Inspect Rubber vibration buffers Have replaced by STIHL dealer Inspect xx Muffler Inspect spark arrestor screen x Clean or replace spark arrestor screen xx Check x Chain catcher Replace x

46 Specifications

Engine Fuel/Oil System Cutting Attachment The "Emission Compliance Period" Recommended cutting attachments referred to on the Emissions Carburetor: for compliance with § 5.11 of ANSI Compliance Label indicates the number All position diaphragm carburetor Standard B 175.1-2000 of operating hours for which the engine with integral fuel pump (see page 12 of this Manual): has been shown to meet Federal emission requirements. Air filter: STIHL reduced kickback bar Category A = 300 hours, B = 125 hours, Large area felt mat (with green label): C = 50 hours Rollomatic with sprocket nose The Emission Compliance Period used Fuel tank capacity: 30, 35 or 40 cm (12, 14 or 16 in) on the CARB-Air Index Label indicates 0.29 l (0.61 US pt) the terms: STIHL low kickback chain* Extended = 300 hours, Fuel mix: (with green label): Intermediate = 125 hours, See chapter "Fuel" 9.32 mm (3/8") Picco-Micro1 (63 PM1) Moderate = 50 hours Chain lubrication: Chain sprocket: STIHL single cylinder, two-stroke engine Fully automatic oil pump 6- or 7-tooth for 3/8" Picco pitch 009 009 L Oil tank capacity: Displacement: 36.6 cm3 40.8 cm3 0.23 l (0.49 US pt) Other cutting attachments available for (2.23 cu.in) (2.49 cu.in) this powerhead are: Bore: 36 mm 38 mm STIHL yellow-labeled chain: (1.42 in) (1.50 in) Weight Picco-Micro (63 RM) Stroke: 36 mm 36 mm without bar and chain: (1.42 in) (1.42 in) 4.1 kg (9.0 lb) Since new bar/chain combinations may Power output according be developed after publication of this ISO 7293: 1.2 kW 1.5 kW Manual, ask your STIHL dealer for the Max. engine latest STIHL recommendations. speed with bar In order to comply with the kickback and chain: 10,500 r.p.m. performance requirements of § 5.11 of ANSI Standard B 175.1-2000, Ignition System do not use replacement saw chain Type: unless it has been designated as Electronic (breakerless) magneto ignition meeting the ANSI § 5.11 requirements Spark plug (suppressed): on this specific powerhead, or has been Bosch WSR 6 F or NGK BPMR 7 A designated as "low kickback" saw chain* Heat range 200 in accordance with the ANSI B 175.1- Electrode gap 0.5 mm (0.02 in) 2000 standard. Spark plug thread: * See definition of "low kickback chain" M 14x1.25; 9.5 mm (0.37 in) long on page 11 of this Manual.

47 Ordering Spare Parts Storing the Machine

Please enter your saw model, machine Warranty claims following repairs For periods of about 3 months or longer: number as well as the part numbers of can be accepted only if the repair has the guide bar, saw chain and chain been performed by an authorized STIHL • Drain and clean the fuel tank in a sprocket in the spaces provided on the Service Shop using original STIHL spare well ventilated area. right parts. • Run engine until carburetor is dry - This will make re-ordering simpler. this helps prevent the carburetor Original STIHL parts can be identified by diaphragms sticking together. The guide bar, saw chain and chain the STIHL part number, the T • Remove the saw chain and guide sprocket are subject to normal wear and logo and the STIHL parts symbol bar, clean them and protect tear. with corrosion inhibiting oil. The symbol may appear alone • Thoroughly clean the machine - The part numbers of the standard bar, on small parts. pay special attention to the chain and sprocket are printed on the cylinder fins and air filter. right for your convenience. • If you use a biological chain and bar lubricant, e.g. STIHL Bioplus, When purchasing these parts, always completely fill the chain oil tank. quote the saw model, the part numbers • Store the machine in a dry and high and names of the parts. or locked location - out of the reach of children and other Model unauthorized persons.

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 67,+/,QFRUSRUDWHG)HGHUDODQG&DOLIRUQLD (PLVVLRQ&RQWURO:DUUDQW\6WDWHPHQW

49 :DUUDQW\3HULRG :DUUDQW\:RUN 0DLQWHQDQFH5HTXLUHPHQWV The warranty periods will begin on the STIHL Incorporated shall remedy The maintenance instructions in this date the utility equipment engine is war-ranty defects at any authorized manual are based on the application of purchased by the initial purchaser and STIHL servicing dealer or warranty the recommended 2-stroke fuel-oil you have signed and sent back the station. Any such work shall be free of mixture (see also instruction "Fuel"). warranty card to STIHL. If any emission charge to the owner if it is determined Deviations from this recommendation related part on your engine is defective, that a warranted part is defective. Any regarding quality and mixing ratio of fuel the part will be replaced by STIHL manufacturer-approved or equivalent and oil may require shorter maintenance Incorporated at no cost to the owner. replacement part may be used for any intervals. Any warranted part which is not warranty mainten-ance or repairs on scheduled for replacement as required emission-related parts and must be maintenance, or which is scheduled only provided without charge to the owner. /LPLWDWLRQV for regular inspection to the effect of STIHL Incorporated is liable for damages This Emission Control Systems "repair or replace as necessary" will be to other engine components caused by Warranty shall not cover any of the warranted for the warranty period. the failure of a warranted part still under following: Any warranted part which is scheduled warranty. for replacement as required mainten- – repair or replacement required ance will be warranted for the period of The California Air Resources Board’s because of misuse, neglect or lack of time up to the first scheduled replace- Emission Warranty Parts List specifically required maintenance, ment point for that part. defines the emission-related warranted parts. These warranted parts are: – repairs improperly performed or replacements not conforming to 'LDJQRVLV Carburetor STIHL Incorporated specifications that You, as the owner, shall not be charged Choke (Cold start enrichment system) adversely affect performance and/or for diagnostic labor which leads to the Intake manifold durability, and alterations or determination that a warranted part is Air filter modifications not recommended or defective. However, if you claim warranty Spark plug approved in writing by STIHL for a component and the machine is Magneto or electronic ignition system Incorporated, tested as non-defective, STIHL (ignition module) Incorporated will charge you for the cost Catalytic converter (if applicable) and of the emission test. Fasteners Mechanical diagnostic work will be – replacement of parts and other performed at an authorized STIHL services and adjustments necessary servicing dealer. Emission test may be :KHUHWRPDNHDFODLPIRU:DUUDQW\ for required maintenance at and after performed either at STIHL Incorporated 6HUYLFH the first scheduled replacement point. or at any independent test laboratory. Bring the product to any authorized STIHL servicing dealer and present the signed warranty card.

50 BA_U4_86_01.fm Seite 1 Dienstag, 15. März 2005 3:52 15

! WARNING!

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

0458 125 3021 englisch / English USA / CARB / EPA