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Chain Saw Safety Manual

© ANDREAS STIHL AG & Co. KG, 2009 Printed on chlorine-free paper Original Instruction Manual 0457-184-3021. M10.H09.CP. Printing inks contain vegetable oils, paper can be recycled. 0000000555_003_GB anPrs25 2 23 Parts Main Maintenance and Care Techniques Safety Precautions and Working Chain Saw Safety Manual { Contents brake. chains and a STIHL Quickstop chain kickback low and bars kickback reduced mends the use of STIHL green labeled recom- STIHL injury kickback of risk in serious or fatal injury. To reduce the suddenly upand back,which may result This can cause the guide bar to kick Avoid contactbar tipwith of any object. manual. understand anyinstructions ofthe in this distributor for your area if you do not Contact your STIHL dealer or the STIHL manual of your particular saw model. therefore always refer to the instruction should You controls. and parts different have may models saw chain Other 171, 181, 211. MS manual show the chain saws STIHL chapter "Main Parts ofthe Saw" in this Please note that the illustrations in the regarding your chain saw. instructions and safety precautions to familiarize yourself with the latest chainsaw user,in itis your own interest saws. Even if you are an experienced manualsfor gasoline-powered chain techniques outlined inSTIHLinstruction precautions and recommended cutting This manual contains the safety Warning! English 1 English

Safety Precautions and Most of these safety precautions and Warning! warnings apply to the use of all STIHL Working Techniques chain saws. Different models may have Do not lend or rent your power tool with- different parts and controls. See the Because a chain saw is a out the instruction manual. Be sure that appropriate section of your instruction high-speed, fast-cutting anyone using it understands the infor- manual for a description of the controls power tool, special safety mation contained in this manual. and the function of the parts of your precautions must be model. observed to reduce the risk of personal injury. Warning! Safe use of a chain saw involves It is important that you The use of this machine may be hazard- 1 the operator ous.The saw chain has many sharp read, fully understand 2 the saw and observe the following cutters. If the cutters contact your flesh, safety precautions and they will cut you, even if the chain is not 3 the use of the saw. warnings. Read the moving. At full throttle, the chain speed instruction manual and can reach 67 mph (30 m/s). THE OPERATOR the safety instructions Use your chain saw only for cutting periodically. Careless or wooden objects. improper use may cause Physical Condition serious or fatal injury. Warning! You must be in good physical condition and mental health and not under the Do not use it for other purposes, since Warning! influence of any substance (drugs, misuse may result in personal injury or alcohol, etc.) which might impair vision, Reactive forces, including kickback, can property damage, including damage to dexterity or judgment. Do not operate be dangerous. Pay special attention to the machine this machine when you are fatigued. the section on reactive forces. Have your STIHL dealer show you how Warning! Warning! to operate your power tool. All safety precautions that are generally observed Minors should never be allowed to use Be alert – if you get tired, take a break. when working with an axe or a hand saw this power tool. Bystanders, especially Tiredness may result in loss of control. also apply to the operation of chain children, and animals should not be Working with any power tool can be saws. Observe all applicable federal, allowed in the area where it is in use. strenuous. If you have any condition state and local safety regulations, that might be aggravated by strenuous standards and ordinances. When using Warning! work, check with your doctor before a chain saw for logging purposes, for operating this machine. instance, refer to the OSHA regulations To reduce the risk of injury to bystand- for "logging operations" at 29 Code of ers and damage to property, never let Federal Regulations 1910.266. your power tool run unattended. When it Warning! is not in use (e.g. during a work break), Prolonged use of a power tool (or other shut it off and make sure that unauthor- machines) exposing the operator to ized persons do not use it. vibrations may produce whitefinger dis- ease (Raynaud's phenomenon) or carpal tunnel syndrome.

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These conditions reduce the hand's saw chain sharp. A dull chain will Clothing must be sturdy ability to feel and regulate temperature, increase cutting time, and pressing and snug-fitting, but allow produce numbness and burning a dull chain through wood will complete freedom of sensations and may cause nerve and increase the vibrations transmitted movement. Wear long circulation damage and tissue necrosis. to your hands. pants made of heavy All factors which contribute to white- – Maintain a firm grip at all times, but material to help protect finger disease are not known, but cold do not squeeze the handles with your legs from contact weather, smoking and diseases or constant, excessive pressure. Take with branches or brush. physical conditions that affect blood frequent breaks. To reduce the risk of cut vessels and blood transport, as well as injuries, wear pants or All the above-mentioned precautions do high vibration levels and long periods of chaps that contain pads not guarantee that you will not sustain exposure to vibration are mentioned as of cut retardant material. whitefinger disease or carpal tunnel factors in the development of whitefinger Avoid loose-fitting jack- syndrome. Therefore, continual and disease. In order to reduce the risk of ets, scarfs, neckties, regular users should closely monitor the whitefinger disease and carpal tunnel jewelry, flared or cuffed condition of their hands and fingers. If syndrome, please note the following: pants, unconfined long any of the above symptoms appear, hair or anything that – Most STIHL power tools are seek medical advice immediately. could become caught on available with an anti-vibration branches, brush or the ("AV") system designed to reduce moving parts of the unit. the transmission of vibrations Warning! Secure hair so it is above created by the machine to the The ignition system of the STIHL unit shoulder level. operator's hands. An AV system is produces an electromagnetic field of a recommended for those persons very low intensity. This field may inter- Good footing is very using power tools on a regular or fere with some pacemakers. To reduce important. Wear sturdy sustained basis. the risk of serious or fatal injury, persons boots with nonslip soles. with a pacemaker should consult their Steel-toed safety boots – Wear gloves and keep your hands are recommended. warm. Heated handles, which are physician and the pacemaker manufac- turer before operating this tool. available on some STIHL Wear an approved safety powerheads, are recommended for Proper Clothing hard hat to reduce the cold weather use. risk of injury to your head. – Keep the AV system well Chain saw noise may maintained. A power tool with loose Warning! damage your hearing. components or with damaged or To reduce the risk of injury, the operator Wear sound barriers (ear worn AV elements will tend to have should wear proper protective apparel. plugs or ear mufflers) to higher vibration levels. Keep the help protect your hearing. Continual and regular users should have their hearing checked regularly.

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Be particularly alert and cautious when horizontally. Keep the hot muffler away wearing hearing protection because from your body and the cutting your ability to hear warnings (shouts, attachment behind you. alarms, etc.) is restricted. Fuel Never operate your power tool unless wearing goggles or properly fitted Your STIHL power tool uses an oil- protective glasses with adequate top gasoline mixture for fuel (see the and side protection complying with ANSI chapter on "Fuel" of your instruction 001BA115 KN Z 87.1 (or your applicable national the fuel system is tight (no leaks) and manual). standard). To reduce the risk of injury to that the controls and safety devices are your face STIHL recommends that you working properly. Do not continue Warning! also wear a face shield or face screen operating this machine if it is damaged. over your goggles or protective glasses. In case of doubt, have it checked by your Gasoline is an extremely flammable fuel. If spilled Always wear gloves STIHL servicing dealer. and ignited by a spark or when handling the other ignition source, it machine and the cutting THE USE OF THE POWER TOOL can cause fire and seri- tool. Heavy-duty, nonslip ous burn injury or gloves improve your grip property damage. Use extreme caution and help to protect your Transporting the Power Tool when handling gasoline or fuel mix. Do hands. not smoke or bring any fire or flame near Warning! the fuel or the power tool. Note that THE POWER TOOL combustible fuel vapor may escape To reduce the risk of injury from saw from the fuel system. chain contact, never carry or transport For illustrations and definitions of the your power tool with the saw chain mov- Fueling Instructions power tool parts see the chapter on ing. Always engage the chain brake "Main Parts and Controls." when taking more than a few steps. Warning! Warning! Warning! Fuel your power tool in well-ventilated Never modify this power tool in any way. areas, outdoors. Always shut off the Always switch off the engine, and fit the engine and allow it to cool before refu- Only attachments supplied by STIHL or chain guard (scabbard) over the chain expressly approved by STIHL for use eling. Gasoline vapor pressure may and guide bar before transporting the build up inside the fuel tank depending with the specific STIHL model are power tool over longer distances. When authorized. Although certain unauthor- on the fuel used, the weather conditions transporting it in a vehicle, properly and the tank venting system. ized attachments are useable with secure it to prevent turnover, fuel spill- STIHL power tools, their use may, in age and damage to the unit. In order to reduce the risk of burns and fact, be extremely dangerous. other personal injury from escaping gas vapor and fumes, remove the fuel filler If this tool is subjected to unusually high It may be carried only in a horizontal loads for which it was not designed (e.g. cap on your power tool carefully so as to position. Grip the front handle in a allow any pressure build-up in the tank heavy impact or a fall), always check manner that the machine is balanced that it is in good condition before to release slowly. Never remove the fuel continuing work. Check in particular that filler cap while the engine is running.

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Select bare ground for fueling and move Fold the grip flush with at least 10 feet (3 m) from the fueling the top of the cap. If the Warning! spot before starting the engine. Wipe off grip does not lie com- Always check your power tool for proper any spilled fuel before starting your pletely flush with the cap condition and operation before starting, machine. and the detent on the grip particularly the throttle trigger, throttle does not fit in the corre- trigger lockout, stop switch and cutting sponding recess in the tool. The throttle trigger must move Warning! filler opening, the cap is freely and always spring back to the idle Check for fuel leakage while refueling not properly seated and position. Never attempt to modify the and during operation. If fuel leakage is tightened and you must controls or safety devices. found, do not start or run the engine until repeat the above steps. the leak is fixed and any spilled fuel has Screw cap been wiped away. Take care not to get Warning! fuel on your clothing. If this happens, Never operate your power tool if it is change your clothing immediately. Dif- Warning! ferent models may be equipped with damaged, improperly adjusted or main- different fuel caps. Unit vibrations can cause an improperly tained, or not completely or securely tightened fuel filler cap to loosen or assembled. Cap with grip come off and spill quantities of fuel. In order to reduce the risk of fuel spillage and fire, tighten the fuel filler cap by Warning! Warning! hand as securely as possible. Check that the spark plug boot is In order to reduce the risk of fuel spill- securely mounted on the spark plug – a The screwdriver end of age and fire from an improperly loose boot may cause arcing that could the STIHL combination tightened fuel cap, correctly position ignite combustible fumes and cause a wrench or other similar and tighten the fuel cap in the fuel tank fire. tool can be used as an opening. aid in tightening slotted For proper assembly of the bar and To do this with this STIHL fuel filler caps. chain follow the procedure described in cap, raise the grip on the the chapter "Mounting the Bar and top of the cap until it is See "Fueling" chapter in your instruction Chain" of your instruction manual. upright at a 90° angle. manual. STIHL Oilomatic chain, guide bar and Insert the cap in the fuel sprocket must match each other in Before Starting tank opening with the tri- gauge and pitch. Before replacing any angular marks on the grip Take off the chain guard (scabbard) and bar and chain, see the chapter entitled of the cap and on the fuel inspect the saw for proper condition and "Specifications" in the instruction tank opening lining up. operation. (See the maintenance chart manual and the section "Kickback" and Using the grip, turn the near the end of the instruction manual.) the "ANSI B 175.1-2000 chain saw cap firmly clockwise as chain saw kickback standard" below. far as it will go (approx. a quarter turn).

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Warning! Warning! Proper tension of the chain is extremely To reduce the risk of injury from chain important. In order to avoid improper contact and/or reactive forces, the chain setting, the tensioning procedure must brake must be engaged when starting be followed as described in your man- the saw. ual. Always make sure the hexagonal nut(s) for the sprocket cover is (are) 001BA114 KN tightened securely after tensioning the Warning! chain in order to secure the bar. Never Do not drop start. This method is very The second recommended method for start the saw with the sprocket cover dangerous because you may lose con- starting your chain saw allows you to loose. Check chain tension once more trol of the saw. start the saw without placing it on the after having tightened the nut(s) and ground. Make sure the chain brake is There are two recommended methods thereafter at regular intervals (whenever engaged, grip the front handle of the for starting your chain saw. the saw is shut off). If the chain chain saw firmly with your left hand. becomes loose while cutting, shut off Keep your arm on the front handle in a the engine and then tighten. Never try to locked (straight) position. Hold the rear adjust the chain while the engine is handle of the saw tightly between your running! legs just above the knees. Maintain good balance and secure footing. Pull Keep the handles clean and dry at all the starting grip slowly with your right times; it is particularly important to keep hand until you feel a definite resistance them free of moisture, pitch, oil, fuel mix, and then give it a brisk, strong pull. grease or resin in order for you to maintain a firm grip and properly control 001BA113 KN your power tool. With the first recommended method, Warning! the chain saw is started on the ground. Be sure that the guide bar and chain are Starting Make sure the chain brake is engaged clear of you and all other obstructions (see "Chain Brake" chapter in your and objects, including the ground. When instruction manual) and place the chain the engine is started, the engine speed Warning! saw on firm ground or other solid surface with the starting throttle lock engaged To reduce the risk of fire and burn inju- in an open area. Maintain good balance will be fast enough for the clutch to ries, start the engine at least 10 feet and secure footing. engage the sprocket and, if the chain (3 meters) from the fueling spot, out- Grip the front handlebar of the saw firmly brake is not activated, turn the chain. If doors only. with your left hand and press down. For the upper quadrant of the tip of the bar Start and operate your saw without saws with a rear handle level with the touches any object, it may cause kick- assistance. For specific starting ground, put the toe of your right foot into back to occur (see section on reactive instructions, see the appropriate section the rear handle and press down. With forces). To reduce this risk, always of the instruction manual. Proper starting your right hand pull out the starter grip engage the chain brake before starting. methods reduce the risk of injury. slowly until you feel a definite resistance Never attempt to start the chain saw and then give it a brisk, strong pull. when the guide bar is in a cut or kerf.

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As soon as the engine is running, immediately blip the throttle trigger, Warning! which will disengage the starting throttle lock and allow the engine to settle down Keep proper footing and balance at all to idle. times. Special care must be taken in slippery conditions (wet ground, snow) and in difficult, overgrown terrain. Watch Warning! for hidden obstacles such as tree stumps, roots, rocks, holes and ditches When you pull the starter grip, do not 001BA087 LÄ to avoid stumbling. There is increased wrap the starter rope around your hand. Your right hand should grip the rear danger of slipping on freshly debarked Do not let the grip snap back, but guide handle. This also applies to left-handers. logs. For better footing, clear away the starter rope to rewind it properly. With your hands in this position, you can fallen branches, scrub and cuttings. Be Failure to follow this procedure may best oppose and absorb the push, pull extremely cautious when working on result in injury to your hand or fingers and kickback forces of your saw without slopes or uneven ground. and may damage the starter losing control (see section on reactive mechanism. forces). Warning! Important Adjustments Take extreme care in wet and freezing Warning! weather (rain, snow, ice). Put off the Warning! To reduce the risk work when the weather is windy, stormy of serious or fatal To reduce the risk of personal injury or rainfall is heavy. from loss of control and/or contact with injury to the oper- ator or bystanders the running cutting tool, do not use your from loss of con- unit with incorrect idle adjustment. At correct idle speed, the cutting tool trol, never use the saw with one hand. It is more difficult for you to control reac- should not move. For directions on how tive forces and to prevent the bar and to adjust idle speed, see the appropriate section of your instruction manual. chain from skating or bouncing along the limb or log. Even for those compact If you cannot set the correct idle speed, saws designed for use in confined have your STIHL dealer check your spaces, one-handed operation is dan- power tool and make proper gerous because the operator may lose adjustments and repairs. control.

During Operation Warning! Holding and controlling the power tool To reduce the risk of cut injuries, keep hands and feet away from the cutting Always hold the unit firmly with both tool. Never touch a moving cutting tool hands on the handles while you are with your hand or any other part of your working. Wrap your fingers and thumbs body. around the handles.

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Warning! Even though bystanders should be kept away from the running saw, never work alone. Keep within calling distance of others in case help is needed.

001BA082 KN Warning! Position the chain saw in such a way As soon as the engine is that your body is clear of the cutting running, this product attachment whenever the engine is generates toxic exhaust running. Stand to the left of cut while fumes containing chemi- bucking. cals, such as unburned Never put pressure on the saw when hydrocarbons (including reaching the end of a cut. The pressure benzene) and carbon monoxide, that may cause the bar and rotating chain to are known to cause respiratory prob- lems, cancer, birth defects, or other 001BA031 KN pop out of the cut or kerf, go out of control and strike the operator or some reproductive harm. Some of the gases other object. If the rotating chain strikes (e.g. carbon monoxide) may be color- Warning! some other object, a reactive force may less and odorless. To reduce the risk of serious or fatal injury/illness from inhal- To reduce the risk of injury from loss of cause the moving chain to strike the ing toxic fumes, never run the machine control, never work on a ladder or any operator. indoors or in poorly ventilated locations. other insecure support. Never hold the Working conditions If exhaust fumes become concentrated machine above shoulder height. Do not due to insufficient ventilation, clear overreach. Operate and start your power tool only outdoors in a well ventilated area. obstructions from work area to permit Operate it under good visibility and proper ventilation before proceeding Warning! daylight conditions only. Work carefully. and/or take frequent breaks to allow fumes to dissipate before they become Never work in a tree unless you have concentrated. received specific, professional training Warning! for such work, are properly secured (such as tackle and harness system or a Your chain saw is a one-person lift bucket), have both hands free for machine. Do not allow other persons in operating the chain saw in a cramped the general work area, even when start- environment and have taken proper pre- ing. Stop the engine immediately if you cautions to avoid injury from falling are approached. limbs or branches.

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housing components) – which can then Warning! Warning! increase the risk of injury, e.g., from the saw chain moving while the engine is Inhalation of certain dusts, especially Breathing asbestos dust is dangerous idling. organic dusts such as mold or pollen, and can cause severe or fatal injury, can cause susceptible persons to have respiratory illness or cancer. The use an allergic or asthmatic reaction. Sub- and disposal of asbestos-containing Warning! stantial or repeated inhalation of dust products have been strictly regulated by Your chain saw is equipped with a chain and other airborne contaminants, in par- OSHA and the Environmental Protec- catcher. It is designed to reduce the risk ticular those with a smaller particle size, tion Agency. If you have any reason to of personal injury in the event of a may cause respiratory or other ill- believe that you might be cutting asbes- thrown or broken chain. From time to nesses. This includes wood dust, tos, immediately contact your employer time, the catcher may be damaged or especially from hardwoods, but also or a local OSHA representative. removed. To reduce the risk of personal from some softwoods such as Western Operating instructions injury, do not operate a chain saw with a Red Cedar. Control dust at the source damaged or missing chain catcher. where possible. Use good work prac- tices, such as always cutting with a Warning! properly sharpened chain (which pro- Do not operate your power tool using Warning! duces wood chips rather than fine dust) the starting throttle lock, as you do not Inspect antivibration elements periodi- and operating the unit so that the wind have control of the engine speed. cally. Replace damaged, broken or or operating process directs any dust excessively worn antivibration elements raised by the power tool away from the In the event of an emergency, switch off immediately, since they may result in operator. Follow the recommendations the engine immediately – move the slide loss of control of the saw. A "spongi- of EPA/OSHA/NIOSH and occupational control / stop switch to 0 or STOP. ness" in the feel of the saw, increased and trade associations with respect to vibration or increased "bottoming" dur- dust ("particulate matter"). When the ing normal operation may indicate inhalation of dust cannot be substan- Warning! damage, breakage or excessive wear. tially controlled, i.e., kept at or near the Always stop the engine before putting a Antivibration elements should always ambient (background) level, the opera- chain saw down. be replaced in sets. If you have any tor and any bystanders should wear a questions as to whether the antivibra- respirator approved by NIOSH/MSHA tion elements should be replaced, for the type of dust encountered. Warning! consult your STIHL servicing dealer. The saw chain continues to move for a short period after the throttle trigger is released (flywheel effect). Warning! Accelerating the engine while the saw Your saw is not designed for prying or chain is blocked increases the load and shoveling away limbs, roots or other will cause the clutch to slip continuously. objects. Such use could damage the This may occur if the throttle is cutting attachment or AV system. depressed for more than a few seconds when the chain is pinched in the cut or the chain brake is engaged. It can result in overheating and damage to important components (e.g. clutch, polymer

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Catalytic converter stay clean and need no service or Warning! maintenance. If you experience loss of performance and you suspect a clogged When sawing, make sure that the saw Warning! screen, have your muffler maintained by chain does not touch any foreign mate- Some STIHL power tools a STIHL servicing dealer. rials such as rocks, fences, nails and the are equipped with a cata- like. Such objects may be flung off, Reactive forces including kickback lytic converter, which is damage the saw chain or cause the saw designed to reduce the to kickback. exhaust emissions of the Warning! engine by a chemical Reactive forces may occur any time the process in the muffler. Due to this proc- Warning! chain is rotating. Reactive forces can ess, the muffler does not cool down as cause serious personal injury. The muffler and other parts of the rapidly as conventional mufflers when engine (e.g. fins of the cylinder, spark the engine returns to idle or is shut off. plug) become hot during operation and To reduce the risk of fire and burn inju- remain hot for a while after stopping the ries, the following specific safety engine. To reduce risk of burns do not precautions must be observed. touch the muffler and other parts while they are hot. Warning! Warning! Since a muffler with a catalytic converter

cools down less rapidly than conven- 001BA093 LÄ To reduce the risk of fire and burn injury, tional mufflers, always set your power The powerful force used to cut wood can keep the area around the muffler clean. tool down in the upright position and be reversed and work against the Remove excess lubricant and all debris never locate it where the muffler is near operator. If the rotating chain is suddenly such as pine needles, branches or dry brush, grass, wood chips or other stopped by contact with any solid object leaves. Let the engine cool down sitting combustible materials while it is still hot. on concrete, metal, bare ground or solid such as a log or branch or is pinched, the wood (e.g. the trunk of a felled tree) reactive forces may occur instantly. away from any combustible substances. Warning! These reactive forces may result in loss of control, which, in turn, may cause An improperly mounted or damaged serious or fatal injury. An understanding Warning! shroud or a damaged/deformed muffler of the causes of these reactive forces shell may interfere with the cooling proc- may help you avoid the element of Never modify your muffler. A modified or ess of the catalytic converter. To reduce damaged muffler could cause an surprise and loss of control. Sudden the risk of fire or burn injury, do not con- surprise contributes to accidents. increase in heat radiation or sparks, tinue work with a damaged or thereby increasing the risk of fire and improperly mounted cylinder shroud or burn injury. You may also permanently a damaged/deformed muffler shell. damage the engine. Have your muffler The most common reactive forces are: serviced and repaired by your STIHL Your catalytic converter is furnished with – kickback, servicing dealer only. screens designed to reduce the risk of fire from the emission of hot particles. – pushback, Due to the heat from the catalytic – pull-in. reaction, these screens will normally

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Kickback: The greater the force of the kickback – must be equipped with at least one reaction, the more difficult it becomes for device designed to reduce the risk Kickback may occur the operator to control the saw. Many of kickback injury, such as a chain when the moving saw factors influence the occurrence and brake, low kickback chain, reduced chain near the upper force of the kickback reaction. These kickback bar, etc. quadrant of the bar nose include chain speed, the speed at which contacts a solid object or The computer derived angles for saws the bar and chain contact the object, the is pinched. below 3.8 cubic inches (62 cm³) angle of contact, the condition of the displacement are measured by applying chain and other factors. a computer program to test results from The type of bar and saw chain you use a kickback test machine. is an important factor in the occurrence and force of the kickback reaction. Some STIHL bar and chain types are designed Warning! to reduce kickback forces. STIHL The computer derived angles of § 5.11 recommends the use of reduced of ANSI B 175.1-2000 may bear no rela- kickback bars and low kickback chains. tionship to actual kickback bar rotation ANSI B 175.1-2000 chain saw angles that may occur in real life cutting kickback standard situations. § 5.11 of ANSI standard B 175.1-2000, In addition, features designed to reduce sets certain performance and design kickback injuries may lose some of their criteria related to chain saw kickback. effectiveness when they are no longer in their original condition, especially if they To comply with § 5.11 of ANSI have been improperly maintained. B 175.1-2000: Compliance with § 5.11 of ANSI a) Saws with a displacement of less B 175.1-2000 does not automatically 001BA035 KN than 3.8 cubic inches (62 cm³) mean that in a real life kickback the bar and chain will rotate at most 45°. The reaction of the cutting force of the – must, in their original condition, chain causes a rotational force on the meet a 45° computer derived chain saw in the direction opposite to the kickback angle when equipped with Warning! chain movement. This may fling the bar certain cutting attachments, up and back in a lightning fast reaction in In order for powerheads below 3.8 cubic an uncontrolled arc mainly in the plane – and must be equipped with at least inches (62 cm³) displacement to comply of the bar. Under some cutting two devices to reduce the risk of with the computed kickback angle circumstances the bar moves towards kickback injury, such as a chain requirements of § 5.11 of ANSI the operator, who may suffer severe or brake, low kickback chain, reduced B 175.1-2000 use only the following cut- fatal injury. kickback bar, etc. ting attachments: Kickback may occur, for example, when b) Saws with a displacement of the chain near the upper quadrant of the 3.8 cubic inches (62 cm³) and bar nose contacts the wood or is above pinched during limbing or when it is incorrectly used to begin a plunge or boring cut.

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– bar and chain combinations listed as complying in the "Specifications" Warning! section of the instruction manual or Never operate your chain saw without a – other replacement bar and chain front hand guard. In a kickback situation combinations marked in this guard helps protect your left hand accordance with the standard for and other parts of your body. In addition, use on the powerhead or removal of the hand guard on a saw – replacement chain designated "low equipped with a Quickstop chain brake kickback saw chain." will deactivate the chain brake. See the section on "Low kickback saw chain and reduced kickback bars." Warning! Devices for reducing the risk of No Quickstop or other chain brake kickback injury device prevents kickback. These devices are designed to reduce the risk STIHL recommends the use of the of kickback injury, if activated, in certain STIHL Quickstop chain brake on your kickback situations. In order for the powerhead with green labeled reduced Quickstop to reduce the risk of kickback 001BA174 KN kickback bars and low kickback chains. injury, it must be properly maintained When a kickback occurs, the guide bar and in good working order. See the may rotate around the front handle. If the Warning! chapter of your instruction manual enti- cutting position is such that the tled "Chain Brake" and the section To reduce the risk of injury, never use a operator's left hand is gripping the front "Maintenance, Repair and Storing" at saw if the chain brake does not function handle behind the hand guard, and if the the end of these Safety Precautions. In properly. Take the saw to your local left hand rotates around the front handle addition, there must be enough distance STIHL servicing dealer. Do not use the and makes a sufficiently forceful contact between the bar and the operator to saw until the problem has been rectified. with the front hand guard, which is the ensure that the Quickstop has sufficient Quickstop activating lever, this contact STIHL Quickstop chain brake time to activate and stop the chain will activate a properly maintained before potential contact with the STIHL has developed a chain stopping Quickstop chain brake. The chain brake operator. system designed to reduce the risk of on newer STIHL chain saws can also be injury in certain kickback situations. It is activated by inertia. If the kickback called a Quickstop chain brake. The forces are sufficiently high, the hand Warning! Quickstop chain brake is standard guard is accelerated towards the bar An improperly maintained chain brake equipment on your STIHL chain saw. nose even without hand contact. See the may increase the time needed to stop chapter entitled "Chain Brake" of your the chain after activation, or may not instruction manual. activate at all.

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when the products are in their original Warning! condition. Products with yellow decals or Warning! labels are for users with extraordinary Never run the chain saw above idle cutting needs and experience and Even if your saw is equipped with a speed for more than 3 seconds when specialized training for dealing with Quickstop, a reduced kickback bar the chain brake is engaged or when the kickback. and/or low kickback chain, this does not chain is pinched or otherwise caught in eliminate the risk of injury by kickback. the cut. Clutch slippage can cause STIHL recommends the use of its Therefore, always observe all safety excessive heat, leading to severe dam- green labeled reduced kickback bars, precautions to avoid kickback age of the motor housing, clutch and green labeled low kickback chains situations. and a STIHL Quickstop chain brake oiler component and may interfere with Low kickback chain the operation of the chain brake. If for both experienced and clutch slippage in excess of 3 seconds inexperienced chain saw users. Some types of saw chain have specially has occurred, allow the motor housing Please ask your STIHL dealer to designed components to reduce the to cool before proceeding and check the properly match your powerhead with the force of nose contact kickback. STIHL operation of your chain brake as appropriate bar/chain combination to has developed low kickback chain for described in the chapter entitled "Chain reduce the risk of kickback injury. Green your powerhead. Brake" of your instruction manual. Also labeled bars and chains are "Low kickback saw chain" is a chain make sure that the chain is not turning recommended for all powerheads. which has met the kickback at idle speed (see above at "Important performance requirements of § 5.11.2.4 Adjustments"). of ANSI B 175.1-2000 (Gasoline- Low kickback saw chain and reduced Warning! Powered Chain Saws–Safety kickback bars Use of other, non-listed bar/chain com- Requirements) when tested in its binations may increase kickback forces original condition on a selected STIHL offers a variety of bars and and the risk of kickback injury. New representative sample of chain saws chains. STIHL reduced kickback bars bar/chain combinations may be devel- below 3.8 cubic inches (62 cm³) and low kickback chains are designed to oped after publication of this literature, displacement specified in ANSI reduce the risk of kickback injury. Other which will, in combination with certain B 175.1-2000. chains are designed to obtain higher powerheads, comply with § 5.11 of cutting efficiency or sharpening ease but ANSI B 175.1-2000. Check with your may result in higher kickback tendency. STIHL dealer for such combinations. Warning! STIHL has developed a color code There are potential powerhead and bar system to help you identify the STIHL combinations with which low kickback reduced kickback bars and low kickback Warning! saw chains can be used which have not chains. Cutting attachments with green Reduced kickback bars and low kick- been specifically certified to comply with warning decals or green labels on the back chains do not prevent kickback, the 45° computer derived kickback packaging are designed to reduce the but they are designed to reduce the risk angle of § 5.11 of ANSI B 175.1-2000. risk of kickback injury. The matching of of kickback injury. They are available Some low kickback chains have not green decaled powerheads under from your STIHL dealer. been tested with all powerhead and bar 3.8 cubic inches (62 cm³) displacement combinations. with green labeled bars and green labeled chains gives compliance with the computed kickback angle requirements of ANSI B 175.1-2000

Chain Saw Safety Manual 13 English

1. Hold the chain saw firmly with both A = Pull-in Warning! hands and maintain a secure grip. Don’t let go. A dull or improperly sharpened chain may reduce or negate the effects of the 2. Be aware of the location of the guide design features intended to reduce kick- bar nose at all times. back energy. Improper lowering or 3. Never let the nose of the guide bar sharpening of the depth gauges or contact any object. Do not cut limbs shaping of the cutters may increase the with the nose of the guide bar. Be chance and the potential energy of a especially careful near wire fences

A 001BA037 KN kickback. Always cut with a properly and when cutting small, tough sharpened chain. limbs, small size brush and saplings Pull-in occurs when the chain on the Reduced kickback bars which may easily catch the chain. bottom of the bar is suddenly stopped when it is pinched, caught or encounters 4. Don't overreach. STIHL green labeled reduced kickback a foreign object in the wood. The bars are designed to reduce the risk of 5. Don't cut above shoulder height. reaction of the chain pulls the saw kickback injury when used with STIHL forward and may cause the operator to 6. Begin cutting and continue at full green labeled low kickback chains. lose control. throttle. Pull-in frequently occurs when the 7. Cut only one log at a time. Warning! bumper spike of the saw is not held When used with other, more aggressive 8. Use extreme caution when securely against the tree or limb and chains, these bars may be less effective reentering a previous cut. when the chain is not rotating at full in reducing kickback. 9. Do not attempt to plunge cut if you speed before it contacts the wood. are not experienced with these Bow Guides cutting techniques. Warning! 10. Be alert for shifting of the log or Use extreme caution when cutting small Warning! other forces that may cause the cut size brush and saplings which may eas- Do not mount a bow guide on any to close and pinch the chain. ily catch the chain, be whipped towards STIHL chain saw. Any chain saw 11. Maintain saw chain properly. Cut you or pull you off balance. equipped with a bow guide is potentially with a correctly sharpened, properly To avoid pull-in very dangerous. The risk of kickback is tensioned chain at all times. increased with a bow guide because of 1. Always start a cut with the chain 12. Stand to the side of the cutting path the increased kickback contact area. rotating at full speed and the of the chain saw. Low kickback chain will not significantly bumper spike in contact with the reduce the risk of kickback injury when wood. used on a bow guide. 2. The risk of pull-in may also be To avoid kickback reduced by using wedges to open the kerf or cut. The best protection from personal injury that may result from kickback is to avoid kickback situations:

14 Chain Saw Safety Manual English

B = Pushback Felling Instructions Warning! There are a number of factors that may affect and change the intended direction of fall, e.g. wind direction and speed, lean of tree, surrounding trees and obstacles, sloping ground, one-sided limb structure, wood structure, decay, 1 1/2 1 snow load, etc. To reduce the risk of 21/2 B 001BA038 KN severe or fatal injury to yourself or oth- 001BA088 LÄ ers, look for these conditions prior to Pushback occurs when the chain on the When felling, maintain a distance of at beginning the cut, and be alert for a top of the bar is suddenly stopped when least 2 1/2 tree lengths from the nearest change in direction while the tree is it is pinched, caught or encounters a person. foreign object in the wood. The reaction falling. of the chain may drive the saw rapidly When felling in the vicinity of roads, straight back toward the operator and railways and power lines, etc., take extra Warning! may cause loss of saw control. precautions. Inform the police, utility Pushback frequently occurs when the Always observe the general condition of company or railway authority before top of the bar is used for cutting. the tree. Inexperienced users should beginning to cut. never attempt to cut trees that are To avoid pushback decayed or rotted inside or that are Warning! 1. Be alert to forces or situations that leaning or otherwise under tension. may cause material to pinch the top There is an increased risk that such The noise of your engine may drown of the chain. trees could snap or split while being cut any warning call. and cause serious or fatal injury to the 2. Do not cut more than one log at a operator or bystanders. Also look for time. broken or dead branches which could 3. Do not twist the saw when vibrate loose and fall on the operator. withdrawing the bar from a plunge When felling on a slope, the operator cut or underbuck cut because the should stand on the uphill side if chain can pinch. possible.

Cutting Techniques Felling Felling is cutting down a tree. Before felling a tree, consider carefully all conditions which may affect the direction of fall.

Chain Saw Safety Manual 15 English

Escape path Buttress roots Conventional cut

B

C 45¡ 001BA146 KN

A If the tree has large buttress roots, cut into the largest buttress vertically first 45¡ (horizontally next) and remove the resulting piece. Gunning sight C B 001BA143 KN 001BA040 KN

First clear the tree base and work area Felling notch (C) – determines the from interfering limbs and brush and direction of the fall clean its lower portion with an ax. For a conventional cut: Then, establish two paths of escape (B) 001BA153 KN N Properly place felling notch and remove all obstacles. These paths perpendicular to the line of fall, When making the felling notch, use the should be generally opposite to the close to the ground. planned direction of the fall of the tree gunning sight on the shroud and housing (A) and about at a 45° angle. Place all to check the desired direction of fall: N Cut down at approx. 45° angle to a depth of about 1/5 to 1/4 of the trunk tools and equipment a safe distance Position the saw so that the gunning diameter. away from the tree, but not on the sight points exactly in the direction you escape paths. want the tree to fall. N Make second cut horizontal. N Remove resulting 45° piece.

16 Chain Saw Safety Manual English

Open-face technique Making sapwood cuts D =Felling cut

D

D 001BA150 KN 001BA144 KN Felling notch (C) – determines the N For medium sized or larger trees Conventional and open-face technique: direction of the fall make cuts at both sides of the trunk, N Begin 1 to 2 inches (2,5 to 5 cm) at same height as subsequent For an open-face cut: higher than center of felling notch. felling cut. N Properly place felling notch N Cut horizontally towards the felling N Cut to no more than width of guide perpendicular to the line of fall, notch. close to the ground. bar. N Leave approx.1/10 of diameter This is especially important in softwood N Cut down at approx. 50° angle to a uncut. This is the hinge. depth of approx.1/5 to 1/4 of the in summer – it helps prevent sapwood N Do not cut through the hinge – you trunk diameter. splintering when the tree falls. could lose control of the direction of N Make second cut from below at the fall. approx. 40 degree angle. Drive wedges into the felling cut where N Remove resulting 90° piece. necessary to control the fall.

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

Chain Saw Safety Manual 17 English

E = Hinge Felling cut for small diameter trees: Felling cut for large diameter trees simple fan cut

E

1

E 001BA148 KN 001BA145 KN

N Helps control the falling tree. 001BA147 KN Engage the bumper spikes of the chain N Do not cut through the hinge – you Warning! saw directly behind the location of the could lose control of the direction of intended hinge and pivot the saw around Felling a tree that has a diameter the fall. this point only as far as the hinge. The greater than the length of the guide bar bumper spike rolls against the trunk. requires use of either the sectioning fell- ing cut or plunge-cut method. These methods are extremely dangerous because they involve the use of the nose of the guide bar and can result in kickback. Only properly trained profes- sionals should attempt these techniques. Sectioning method For the sectioning method make the first part of the felling cut with the guide bar fanning in toward the hinge. Then, using the bumper spike as a pivot, reposition the saw for the next cut.

18 Chain Saw Safety Manual English

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

Warning! 2 In order to reduce the risk of personal injury, never stand directly behind the 4 The plunge cut is made with the guide tree when it is about to fall, since part of bar nose. Begin the plunge cut by the trunk may split and come back applying the lower portion of the guide towards the operator (barber-chairing), bar nose to the tree at an angle. Cut until or the tree may jump backwards off the the depth of the kerf is about the same stump. Always keep to the side of the as the width of the guide bar. Next, align falling tree. When the tree starts to fall, the saw in the direction in which the withdraw the bar, shut off the engine recess is to be cut. and walk away on the preplanned escape path. Watch out for falling limbs. With the saw at full throttle, insert the guide bar in the trunk. Avoid repositioning the saw more than Warning! necessary. When repositioning for the next cut, keep the guide bar fully Be extremely careful with partially fallen engaged in the kerf to keep the felling trees which are poorly supported. When cut straight. If the saw begins to pinch, the tree hangs or for some other reason insert a wedge to open the cut. On the does not fall completely, set the saw last cut, do not cut the hinge. aside and pull the tree down with a cable winch, block and tackle or tractor. Plunge-cut method If you try to cut it down with your saw, Timber having a diameter more than you may be injured. twice the length of the guide bar requires Enlarge the plunge cut as shown in the Limbing the use of the plunge-cut method before illustration. making the felling cut. Limbing is removing the branches from a fallen tree. First, cut a large, wide felling notch. Make a plunge cut in the center of the Warning! notch. There is an extreme danger of kick- Warning! back at this point. Extra caution must There is an extreme danger of kickback be taken to maintain control of the during the limbing operation. Do not saw. To make the felling cut, follow work with the nose of the bar. Be the sectioning method described extremely cautious and avoid contact- previously. ing the log or other limbs with the nose of the guide bar.

Chain Saw Safety Manual 19 English

Do not stand on a log while limbing it – you may slip or the log may roll. Warning! Start limbing by leaving the lower limbs When bucking, do not stand on the log. 1 to support the log off the ground. When Make sure the log will not roll downhill. If underbucking freely hanging limbs, a on a slope, stand on the uphill side of pinch may result or the limb may fall, the log. Watch out for rolling logs. 2 causing loss of control. If a pinch occurs, stop the engine and remove the saw by Cut only one log at a time. 001BA151 KN lifting the limb. Shattered wood should be cut very carefully. Sharp slivers of wood may be caught and flung in the direction of the Warning! operator of the saw. 2 Be extremely cautious when cutting limbs or logs under tension (spring poles). The limbs or logs could spring 1 back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator. 001BA152 KN Bucking Logs under strain: Risk of pinching! Always start relieving cut (1) at compression side.Then make bucking cut (2) at tension side. If the saw pinches, stop the engine and remove it from the log. Only properly trained professionals should work in an area where the logs, limbs and roots are tangled. Working in "blow down" areas is extremely hazardous. Drag the logs into a clear

01BA051 LÄ

0 area before cutting. Pull out exposed and cleared logs first. When cutting small logs, place log through "V" – shaped supports on top of a sawhorse. Never permit another MAINTENANCE, REPAIR AND person to hold the log. Never hold the STORING log with your leg or foot. Maintenance, replacement, or repair

001BA033 KN of the emission control devices and systems may be performed by any Bucking is cutting a log into sections. nonroad engine repair establishment or individual. However, if you make a warranty claim for a component which has not been serviced or

20 Chain Saw Safety Manual English maintained properly or if Tighten all nuts, bolts and screws except nonapproved replacement parts were Warning! the carburetor adjustment screws after used, STIHL may deny coverage. each use. Use the specified spark plug and make sure it and the ignition lead are always Warning! clean and in good condition. Always Warning! press spark plug boot snugly onto spark Use only identical STIHL replacement In order for the chain brake on your plug terminal of the proper size. (Note: If parts for maintenance and repair. Use of STIHL chain saw to properly perform its terminal has detachable SAE adapter non-STIHL parts may cause serious or function of reducing the risk of kickback nut, it must be securely attached.) A fatal injury. and other injuries, it must be properly loose connection between spark plug maintained. Like an automobile brake, a Strictly follow the maintenance and terminal and the ignition wire connector chain saw chain brake incurs wear each repair instructions in the appropriate in the boot may create arcing that could time it is engaged. section of your instruction manual. ignite combustible fumes and cause a Please refer to the maintenance chart in fire. The amount of wear will vary depending this manual. upon usage, conditions under which the saw is used and other factors. Excessive Warning! wear will reduce the effectiveness of the Warning! Never test the ignition system with the chain brake and can render it Always stop the engine and make sure spark plug boot removed from the spark inoperable. that the cutting tool is stopped before plug or with a removed spark plug, since For the proper and effective operation of doing any maintenance or repair work or uncontained sparking may cause a fire. the chain brake, the brake band and cleaning the power tool. clutch drum must be kept free of dirt, Warning! grease and other foreign matter which Warning! may reduce friction of the band on the Do not operate your chain saw if the drum. Do not attempt any maintenance or muffler is damaged, missing or modi- repair work not described in your fied. An improperly maintained muffler For these reasons, each STIHL chain instruction manual. Have such work per- will increase the risk of fire and hearing saw should be returned to trained formed by your STIHL servicing dealer loss. personnel such as your STIHL servicing only. For example, if improper tools are dealer for periodic inspection and If your muffler was equipped with a used to remove the flywheel or if an servicing of the brake system according spark-arresting screen to reduce the risk improper tool is used to hold the fly- to the following schedule: of fire, never operate your saw if the wheel in order to remove the clutch, screen is missing or damaged. Heavy usage - every three months, structural damage to the flywheel could Remember that the risk of forest fires is Moderate usage - twice a year, occur and could subsequently cause the greater in hot or dry weather. Occasional usage - annually. flywheel to burst. Keep the chain, bar and sprocket clean; The chain saw should also be returned Wear gloves when handling or replace worn sprockets or chains. Keep immediately for maintenance whenever performing maintenance on saw chains. the chain sharp. You can spot a dull the brake system cannot be thoroughly chain when easy-to-cut wood becomes cleaned or there is a change in its hard to cut and burn marks appear on operating characteristics. the wood. Keep the chain at proper tension.

Chain Saw Safety Manual 21 English

For any maintenance of the emission control system please refer to the maintenance chart and to the limited warranty statement near the end of the instruction manual. Store chain saw 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 the instruction manual).

22 Chain Saw Safety Manual English

Maintenance and Care

The following maintenance intervals apply for normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, tropical wood, etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. before starting work after finishing work or daily after eachrefueling stop weekly monthly monthsevery 12 if problem if damaged if required Visual inspection (condition, leaks) XX Complete machine Clean X

Throttle trigger, trigger interlock, choke lever, stop switch, Master Control lever (depending on Check operation XX version)

Check operation XX Chain brake Have checked by dealer1) X

Check X

Pickup body/filter in fuel tank Clean, replace filter element XX

Replace XXX

Fuel tank Clean X

Chain oil tank Clean X

Chain Lubrication Check X

Inspect, also check sharpness XX Saw chain Check chain tension XX

Sharpen X Check (wear, damage) X Clean and turn over X Guide bar Deburr X Replace XX

Chain sprocket Check X Clean XX Air filter Replace X

Check XX Anti-vibration elements Have replaced by dealer1) X

Chain Saw Safety Manual 23 English

The following maintenance intervals apply for normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, tropical wood, etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. before starting work afterfinishing work or daily after each refueling stop weekly monthly every 12 months if problem if damaged if required Cooling inlets Clean X

Cylinder fins Clean XX

Check idle adjustment – chain must not rotate XX Carburetor Adjusting Idle Speed X

Readjust electrode gap X Spark plug Replace after 100 hours of operation

All accessible screws and nuts (not adjusting Retighten X screws) 2)

Check1) X Spark arresting screen in muffler (not all markets) Clean, replace if necessary1) X Check X Chain catcher Replace X

Safety labels Replace X

1) STIHL recommends a STIHL servicing dealer. 2) Firmly tighten down the cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation.

24 Chain Saw Safety Manual English

Main Parts

1 Shroud Twist Lock 2 Carburetor Adjusting Screws 3 Fuel Pump (Easy Start1)) 13 4 Shutter (Summer and Winter Position, only MS 211) 7 5 Chain Brake 14 1 4 6 Chain Sprocket 3 7 Chain Sprocket Cover 8 8 Chain Catcher 2 5 9 Chain Tensioner (lateral) 10 10 Bumper Spike 6 11 Guide Bar 11 12 Oilomatic Saw Chain 7 9 13 Adjusting Wheel for Quick Chain 12 Tensioner1) 14 Handle of Wingnut (Quick Chain 8 Tensioner1)) 15 Oil Filler Cap 16 Muffler 17 Front Hand Guard 18 17 18 Front Handle (Handlebar) 19 19 Spark Plug Boot 20 Starter Grip 21 Fuel Filler Cap 16 20 22 Master Control Lever 24 23 Throttle Trigger 24 Throttle Trigger Lockout 15 22 25 Rear Handle 25 23 26 Rear Hand Guard # Serial Number # 21 26 533BA015 KN

1) Depending on Model

Chain Saw Safety Manual 25 English

Definitions 12 Oilomatic Saw Chain 22 Master Control Lever A loop consisting of cutters, tie Lever for choke control, starting 1 Shroud Twist Lock straps and drive links. throttle, run and stop switch position. Lock for shroud. 13 Adjusting Wheel for Quick Chain Tensioner 23 Throttle Trigger 2 Carburetor Adjusting Screws Permits precise adjustment of chain Controls the speed of the engine. For tuning the carburetor. tension. 24 Throttle Trigger Lockout 3Fuel Pump 14 Handle of Wingnut (Quick Chain Must be depressed before the Provides additional fuel feed for a Tensioner) throttle trigger can be activated. cold start. Must be released to allow chain to 25 Rear Handle 4 Shutter be tensioned with adjusting wheel. The support handle for the right With summer and winter positions. 15 Oil Filler Cap hand, located at the rear of the saw. Carburetor is heated in winter For closing the oil tank. position. 26 Rear Hand Guard 16 Muffler 5 Chain Brake Gives added protection to Reduces engine exhaust noise and operator's right hand. A device to stop the rotation of the diverts exhaust gases away from Guide Bar Nose chain. Is activated in a kickback operator. situation by the operator's hand or The exposed end of the guide bar. by inertia. 17 Front Hand Guard (not illustrated, see chapter 6 Chain Sprocket Provides protection against "Tensioning the Saw Chain") projecting branches and helps The toothed wheel that drives the Clutch prevent left hand from touching the saw chain. chain if it slips off the handlebar. It Couples engine to chain sprocket 7 Chain Sprocket Cover also serves as the lever for chain when engine is accelerated beyond idle speed. (not illustrated) Covers the clutch and chain brake activation. sprocket. 18 Front Handle (Handlebar) Anti-Vibration System 8 Chain Catcher Handlebar for the left hand at the The anti-vibration system includes a front of the saw. number of anti-vibration elements Helps to reduce the risk of operator designed to reduce the contact by a chain if it breaks or 19 Spark Plug Boot transmission of vibrations created comes off the bar. Connects the spark plug with the by the engine and cutting 9 Chain Tensioner (lateral) ignition lead. attachment to the operator's hands. (not illustrated) Permits precise adjustment of chain 20 Starter Grip tension. The grip of the pull starter, for 10 Bumper Spike starting the engine. Toothed stop for holding saw steady 21 Fuel Filler Cap against wood. For closing the fuel tank. 11 Guide Bar Supports and guides the saw chain.

26 Chain Saw Safety Manual English

Chain Saw Safety Manual 27 English

28 Chain Saw Safety Manual

! WARNING!

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

0457-184-3021 englisch USA UG www.stihl.com *04571843021* 0457-184-3021