Instruction Manual/Owner's Manual

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Chainsaw Safety Manual English / USA Contents

Some Important Safety Precautions This manual contains the safety for Chain Saw Users ...... 2 precautions and recommended cutting Safety Precautions ...... 4 techniques outlined in STIHL chainsaw Maintenance Chart ...... 26 Owner’s Manuals. Even if you are an Main Parts of the Saw ...... 28 experienced chainsaw user, it is in your own interests to familiarize yourself with the latest rules and regulations regarding safe use of your chainsaw. Please note that the illustrations on pages 28 and 29 show the chainsaws STIHL MS 210, 230, 250. Other chainsaw models may have different parts and controls. You should therefore always refer to the Owner’s Manual of your particular saw model. !Warning! Because a chainsaw is a high-speed wood-cutting tool, some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury. Read and follow all safety precautions in current Owner’s Manual or Safety Manual. Always use two hands

Printed on chlorine-free paper. recycled. be can oils; paper vegetable inks contain Printing to operate the chainsaw. !Warning! Avoid contact of bar tip with any object. This can cause the guide bar to kick U S A suddenly up and back, which may result in serious or fatal injury. To reduce the

P r i nted i n risk of kickback injury STIHL recom-

mends the use of STIHL green labeled reduced kickback bars and low kickback chains and a STIHL Quickstop chain brake. Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this manual.

Chainsaw Safety Manual 1 English / USA 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.

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4. Use caution when handling fuel. 10. Do not operate a chainsaw that is 17. All chainsaw service, other than the Move the chainsaw at least 10 feet damaged, improperly adjusted, or items listed in the Owner's Manual (3 m) from the fueling point before not completely and securely maintenance instructions, should be starting the engine. assembled. Be sure that the saw performed by competent chainsaw 5. Do not allow other persons to be chain stops moving when the service personnel.(For example, if near the chainsaw when starting or throttle trigger is released. improper tools are used to remove cutting with the chainsaw. Keep 11. Shut off the engine before setting the flywheel or if an improper tool is bystanders and animals out of the the chainsaw down. used to hold the flywheel in order to remove the clutch, structural work area. 12. Use extreme caution when cutting damage to the flywheel could occur 6. Do not start cutting until you have a small size brush and saplings and could subsequently cause the clear work area, secure footing, and because slender material may catch flywheel to burst). a planned retreat path from the the saw chain and be whipped falling tree. toward you or pull you off balance. 18. When transporting your chainsaw, use the appropriate chain guard 7. Keep all parts of your body away 13. When cutting a limb that is under (scabbard). from the saw chain when the engine tension be alert for springback so is running. that you will not be struck when the Other important safety precautions are contained in the body of the Owner's 8. Before you start the engine, make tension in the wood fibers is Manual especially in the General Safety sure that the saw chain is not released. Precautions. contacting anything. 14. Keep the handles dry, clean, and 9. Carry the chainsaw with the engine free of oil or fuel mixture. Note: stopped, the guide bar and saw 15. Operate the chainsaw only in well- When using a chainsaw for logging chain to the rear, and the muffler ventilated areas. purposes, refer to the Code of Federal away from your body. 16. Do not operate a chainsaw in a tree Regulations, Parts 1910 and 1928. unless you have been specifically trained to do so.

Chainsaw Safety Manual 3 English / USA Safety Precautions

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

4 Chainsaw Safety Manual English / USA

These conditions reduce the hand's – Keep the saw chain sharp and the Proper Clothing ability to feel and regulate temperature, saw, including the AV system, well produce numbness and burning maintained. A dull chain will in- !Warning! sensations and may cause nerve and crease cutting time, and pressing a To reduce the risk of injury, the operator circulation damage and tissue necrosis. dull chain through wood will in- should wear proper protective apparel. crease the vibrations transmitted to All factors which contribute to Clothing must be sturdy your hands. A saw with loose whitefinger disease are not known, but and snug-fitting, but allow components or with damaged or cold weather, smoking and diseases or complete freedom of worn AV buffers will also tend to physical conditions that affect blood movement. Avoid loose- have higher vibration levels. vessels and blood transport, as well as fitting jackets, scarfs, high vibration levels and long periods of – Maintain a firm grip at all times, but neckties, jewelry, flared or exposure to vibration are mentioned as do not squeeze the handles with cuffed pants, unconfined long hair or factors in the development of whitefinger constant, excessive pressures. anything that could become entangled disease. In order to reduce the risk of Take frequent breaks. with the saw or brush. Wear overalls or whitefinger disease and carpal tunnel All the above mentioned precautions do jeans with a reinforced cut retardant syndrome, please note the following: not guarantee that you will not sustain insert or cut retardant chaps. – Many STIHL models are available whitefinger disease or carpal tunnel with an anti-vibration (AV) system syndrome. Therefore, continual and Protect your hands with designed to reduce the regular users should monitor closely the gloves when handling transmission of vibrations created condition of their hands and fingers. If saw and saw chain. by the engine and cutting any of the above symptoms appear, Heavy-duty, nonslip attachment to the operator's hands. seek medical advice immediately. gloves improve your grip An AV system is recommended for !Warning! and protect your hands. those persons using chainsaws on a regular or sustained basis. The ignition system of your unit Good footing is most produces an electromagnetic field of a important in chainsaw – Wear gloves and keep your hands very low intensity. This field may inter- warm. Heated handles, which are work. Wear sturdy boots fere with some pacemakers. To reduce with nonslip soles. Steel- available on most STIHL power- the risk of serious or fatal injury, persons heads, are recommended for cold toed safety boots are with pacemaker should consult their recommended. weather use. physician and the pacemaker manufacturer before operating this tool. Never operate a chainsaw unless wearing goggles or properly fitted safety glasses with adequate top and side protection complying with your national standard.

Chainsaw Safety Manual 5 English / USA

Wear an approved safety THE USE OF THE SAW hard hat to protect your Transporting the chainsaw head. Chainsaw noise may damage your !Warning! hearing. Always wear Always stop the engine before putting a sound barriers (ear plugs chainsaw down or carrying it. Carrying a or ear mufflers) to protect your hearing. chainsaw with the engine running is Continual and regular users should have

extremely dangerous. 001BA115 KN their hearing checked regularly. Accidental acceleration of the engine can cause the chain to rotate. During The chain guard (scabbard) should be THE SAW operation, the powerhead muffler and over the chain and the guide bar, which the material around it reach extremely Parts of the chainsaw; for illustrations should point backwards. When carrying high temperatures. Avoid touching the and definitions of the parts see the your saw, the bar should be behind you. hot muffler, you could receive serious chapter on "Main Parts of Saw". By vehicle: When transporting in a burns. vehicle, keep chain and bar covered with !Warning! By hand: When carrying your saw by the chain guard. Properly secure your Never modify a chainsaw in any way. hand, the engine must be stopped and saw to prevent turnover, fuel spillage Only attachments and parts supplied by the saw must be in the proper position. and damage to the saw or vehicle. STIHL or expressly approved by STIHL Grip the front handle and place the Preparation for the use of the saw for use with the specific STIHL saw muffler away from the body. models are authorized. Although certain Take off the chain guard and inspect for unauthorized attachments are usable safety in operation. For assembly, follow with the STIHL powerhead, their use the procedure described in the chapter may, in fact, be extremely dangerous. "Mounting the Bar and Chain" of your Owner's Manual. STIHL Oilomatic chain, guide bar and sprocket must match each other in gauge and pitch. Before replacing any bar and chain, see the sections on "Specifications", "Kickback" and the "ANSI B 175.1-2000 chainsaw kickback standard" in this manual.

6 Chainsaw Safety Manual English / USA

Do not smoke or bring any !Warning! fire or flame near the fuel !Warning! Proper tension of the chain is extremely or the chainsaw. Note that Check for fuel leakage while refueling important. In order to avoid improper combustible fuel vapors and during operation. If fuel or oil setting, the tensioning procedure must may be vented from the leakage is found, do not start or run the be followed as described in your fuel system. engine until leak is fixed and spilled fuel manual. Always make sure the has been wiped away. Take care not to hexagonal nut(s) for the sprocket cover get fuel on your clothing. If this happens, is (are) tightened securely after Fueling Instructions change your clothing immediately. tensioning the chain. Never start the saw Different models may have different fuel with the sprocket cover loose. Check !Warning! caps. chain tension once more after having Fuel your chainsaw in well-ventilated tightened the nut(s) and thereafter at areas, outdoors only. Always shut off the regular intervals (whenever the saw is engine and allow it to cool before Cap with Grip shut off). If the chain becomes loose refueling. Gasoline vapor pressure may while cutting, shut off the engine and build up inside the gas tank depending !Warning! then tighten. Never try to adjust the on the fuel used, the weather conditions, In order to reduce the risk of fuel spillage chain while the engine is running! and the venting system of the tank. In and fire from an improperly tightened order to reduce the risk of burns or other fuel cap, correctly position and tighten personal injury from escaping gas vapor the fuel cap in the fuel tank opening. Fueling and fumes, remove the fuel filler cap on To do this with this STIHL the STIHL product carefully so as to Your STIHL chainsaw uses an oil-gaso- cap, raise the grip on the allow any pressure build-up in the tank line mixture for fuel (see chapter "Fuel" top of the cap until it is to release slowly. Never remove fuel of your Owner's Manual). upright at a 90° angle. filler cap while engine is running. Insert the cap in the fuel !Warning! Select bare ground for fueling and move tank opening with the Gasoline is an extremely flammable fuel. at least 10 feet (3 m) from fueling spot triangular marks on the grip of the cap If spilled or ignited by a spark or other before starting the engine. Wipe off any and on the fuel tank opening lining up. ignition source, it can cause fire and spilled fuel before starting your saw, and Using the grip, turn the cap firmly serious burn injury or property damage. check for leakage. clockwise as far as it will go (approx. a Use extreme caution when handling quarter turn). gasoline or fuel mix.

Chainsaw Safety Manual 7 English / USA

Fold the grip flush with the top of the cap. If the grip does not lie completely flush with the cap and the detent on the grip does not fit in the corresponding recess in the filler neck, the cap is not properly seated and 001BA113 KN tightened and you must repeat the 001BA114 KN above steps. Starting Grip the front handlebar of the saw firmly with your left hand and press down. For The chain brake must be engaged when Slotted Cap saws with a rear handle level with the starting the saw. ground, put the toe of your right foot into !Warning! !Warning! the rear handle and press down. With Unit vibrations can cause an improperly your right hand pull out the starter grip Your chainsaw is a one-person saw. Do tightened fuel filler cap to loosen or slowly until you feel a definite resistance not allow other persons to be near the come off and spill quantities of fuel. In and then give it a brisk, strong pull. running chainsaw. Start and operate order to reduce the risk of fuel spillage your saw without assistance. For The second recommended method for and fire, tighten fuel filler cap by hand specific starting instructions, see the starting your chainsaw allows you to with as much force as possible. appropriate section of the Owner's start the saw without placing it on the The screwdriver end of Manual. Proper starting methods reduce ground. Make sure the chain brake is the STIHL combination the risk of injury. Do not drop start. This engaged, grip the front handle of the wrench or other similar method is very dangerous because you chainsaw firmly with your left hand. tool can be used as an aid may lose control of the saw. Keep your arm on the front handle in a in tightening slotted fuel locked (straight) position. Hold the rear There are two recommended methods filler caps. handle of the saw tightly between your for starting your chainsaw. See "Fueling" chapter in your Owner's legs just above the knees. Maintain With the first recommended method, Manual. good balance and secure footing. Pull the chainsaw is started on the ground. the starting grip slowly with your right Make sure the chain brake is engaged hand until you feel a definite resistance (see "Chain Brake" chapter in your and then give it a brisk, strong pull. Owner's Manual) and place the chainsaw on firm ground or other solid surface in an open area. Maintain good balance and secure footing.

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Important adjustments !Warning! !Warning! Be sure that the guide bar and chain are !Warning! Since a muffler with a clear of you and all other obstructions To reduce the risk of personal injury from catalytic converter cools and objects, including the ground. When loss of control or contact with the down less rapidly than the engine is started, the engine speed running chain, do not use a saw with conventional mufflers, with the starting throttle lock engaged incorrect idle adjustment. At correct idle never set your chainsaw will be fast enough for the clutch to speed, the chain should not rotate. For down on or near dry engage the sprocket and, if the chain directions to adjust idle speed, see the brush, grass, wood chips or other brake is not activated, turn the chain. If appropriate section of your Owner's combustible materials while it is still hot. the upper quadrant of the tip of the bar Manual. If you cannot set the correct idle Let the engine cool down sitting on touches any object, it may cause kick- speed, have your STIHL dealer check concrete, metal, bare ground or solid back to occur (see section on reactive your saw and make proper adjustments wood (e.g. the trunk of a felled tree) forces). To reduce this risk, always or repairs. After adjusting a chain, start away from any combustible substances. engage the chain brake before starting. the saw, let the engine run for a while, Never attempt to start the chainsaw then switch engine off and recheck chain !Warning! when the guide bar is in a cut or kerf. tension. Proper chain tension is very To reduce the risk of fire or burn injury, important at all times. let the unit cool down before refueling !Warning! your chainsaw after use. When you pull the starter grip, do not wrap the starting rope around your Catalytic converter !Warning! hands. Do not allow the grip to snap Never disassemble or modify your back, but guide the starter rope slowly !Warning! muffler. The muffler could be damaged back to permit the rope to rewind Some STIHL chainsaw models are and cause an increase in heat radiation properly. Failure to follow this procedure equipped with a catalytic converter, or sparks, thereby increasing the risk of may result in injury to hand or fingers which is designed to reduce the exhaust fire or burn injury. You may also and may damage the starter emissions of the engine by a chemical permanently damage the engine. Have mechanism. process in the muffler. Due to this your muffler serviced and repaired by process, the muffler does not cool down your STIHL Servicing Dealer only. as rapidly as conventional mufflers when the engine returns to idle or is shut off. To reduce the risk of fire and burn injuries, specific safety precautions must be observed.

Chainsaw Safety Manual 9 English / USA

In this regard use good work practices !Warning! !Warning! and follow the recommendations of To reduce the risk of fire or burn injury, Your chainsaw produces OSHA / NIOSH and occupational and keep the area around the muffler clean. poisonous exhaust fumes trade associations. When the inhalation Remove all debris such as pine needles, as soon as the of toxic dust, mists and fumes cannot be branches or leaves. combustible engine is eliminated, the operator and any running. These gases bystanders should always wear a !Warning! (e.g. carbon monoxide) respirator approved by NIOSH / MSHA An improperly mounted or damaged may be colorless and odorless. To for the type substance at issue. cylinder housing or a damaged/ reduce the risk of serious or fatal injury deformed muffler shell may interfere from breathing toxic fumes, never run with the cooling effect of the catalytic the chainsaw indoors or in poorly !Warning! converter. To reduce the risk of fire or ventilated locations. Ensure proper Breathing asbestos dust is dangerous burn injury, do not continue work with a ventilation when working in trenches or and can cause severe or fatal injury, damaged or improperly mounted other confined areas. respiratory illness or cancer. The use cylinder housing or a damaged/ and disposal of asbestos containing deformed muffler shell. Your catalytic !Warning! products have been strictly regulated by converter is furnished with screens Use of this product (including sharpen- OSHA and the Environmental Protection designed to reduce the risk of fire from ing the saw chain) can generate dust, Agency. Do not cut or disturb asbestos, the emission of hot particles. Due to the mists and fumes containing chemicals asbestos containing products (e.g. heat from the catalytic reaction, these known to cause respiratory disease, asbestos containing drywall or other screens will normally stay clean and cancer, birth defects, or other construction products), or products such need no service or maintenance. If you reproductive harm. If you are unfamiliar as pipes which are wrapped or covered experience loss of performance and you with the risks associated with the with asbestos insulation. If you have any suspect a clogged screen, have your particular dust, mist or fume at issue, reason to believe that you might be muffler maintained by a STIHL Servicing consult your employer, governmental cutting asbestos, immediately contact Dealer. agencies such as OSHA and NIOSH your employer or a local OSHA and other sources on hazardous representative. materials. California and some other Working Conditions authorities, for instance, have published Operate the chainsaw under good lists of substances known to cause visibility and daylight conditions only. cancer, reproductive toxicity, etc. Control dust (such as sawdust), mists (such as oil mist from chain lubrication) and fumes at the source where possible.

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The muffler and other parts of the engine (e.g. fins of the cylinder, spark plug) !Warning! become hot during operation and remain Take extreme care in wet and freezing hot for a while after stopping the engine. weather (rain, snow, ice). Put off the To reduce risk of burns do not touch the work when the weather is windy, stormy muffler and other parts while they are or rainfall is heavy. hot. Don't work alone. Keep within calling distance of others in case help is !Warning! needed. Avoid stumbling on obstacles such as 001BA087 LÄ Your chainsaw is equipped with a chain stumps, roots or rocks and watch out for Cutting Instructions catcher. It is designed to reduce the risk holes or ditches. Clear the area where you are working. Be extremely cautious of personal injury in the event of a Grip: Always hold the saw firmly with when working on slopes or uneven thrown or broken chain. From time to both hands when the engine is running. time the catcher may be damaged or ground. There is increased danger of Place your left hand on front handle bar slipping on freshly debarked logs. removed. and your right hand on rear handle and throttle trigger. Left-handers should To reduce the risk of personal injury, do !Warning! follow these instructions too. not operate a chainsaw with a damaged To reduce the risk Wrap your fingers tightly around the or missing catcher. of serious or fatal handles, keeping the handles cradled Inspect buffers periodically. Replace injury to the between your thumb and forefinger. With damaged, broken or excessively worn operator or your hands in this position, you can best buffers immediately, since they may bystanders, never oppose and absorb the push, pull and result in loss of control of the saw. use the saw with one hand. kickback forces of your saw without A "sponginess" in the feel of the saw, You cannot control reactive forces and losing control (see section on reactive increased vibration or increased you may lose control of the saw, which forces). Make sure your chainsaw "bottoming" during normal operation can result in the skating or bouncing of handles and grip are in good condition may indicate damage, breakage or the bar and chain along the limb or log. and free of moisture, pitch, oil or grease. excessive wear. Buffers should always Even for those compact saws designed !Warning! be replaced in sets. If you have any for use in confined spaces, one-handed Do not operate your chainsaw with the questions as to whether the buffers operation is dangerous because the starting throttle lock engaged. Cutting should be replaced, consult your STIHL operator may lose control. servicing dealer. with the starting throttle lock engaged does not permit the operator proper control of the saw or chain speed.

Chainsaw Safety Manual 11

English / USA 001BA018 LA 001BA018 001BA082 KN

Position the chainsaw in such a way that !Warning! your body is clear of the cutting Never touch a chain with your hand or attachment whenever the engine is any part of your body when the engine is running. Stand to the left of cut while running, even when the chain is not bucking. rotating. The chain continues to rotate Don't put pressure on the saw when for a short period after the throttle trigger reaching the end of a cut. The pressure is released. may cause the bar and rotating chain to 001BA031 KN !Warning! pop out of the cut or kerf, go out of control and strike the operator or some Never work on a ladder, or on any other Do not cut any material other than wood other object. If the rotating chain strikes insecure support. Never use the saw or wooden objects. Use your saw for some other object, a reactive force may above shoulder height. chainsawing only. It is not designed for cause the moving chain to strike the prying or shoveling away limbs, roots or operator. other objects. When sawing, make sure !Warning! that the saw chain does not touch any Never work in a tree unless you have foreign materials such as rocks, fences, received specific, professional training Reactive forces including kickback nails and the like. Such objects may be for such work, are properly secured flung off, damage the saw chain or (such as tackle and harness system or a !Warning! cause the saw to kickback. lift bucket), have both hands free for Reactive forces may occur any time the operating the chainsaw in a cramped !Warning! chain is rotating. Reactive forces can be environment and have taken proper dangerous! In any chainsaw, In order to keep control of your saw, precautions to avoid injury from falling always maintain a firm foothold. limbs or branches.

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The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the saw. Many factors influence the occurrence and force of the kickback reaction. These include chain speed, the speed at which the bar and chain contact the object, the angle of contact, the condition of the 001BA093 LÄ chain and other factors. The type of bar and saw chain you use the powerful force used to cut wood can is an important factor in the occurrence be reversed (and work against the and force of the kickback reaction. Some operator). If the rotating chain is STIHL bar and chain types are designed suddenly stopped by contact with any to reduce kickback forces. STIHL solid object like a log or branch or is recommends the use of reduced pinched, there active forces may occur kickback bars and low kickback chains. instantly. These reactive forces may result in loss of control which may, in turn, cause serious or fatal injury. An 001BA035 KN ANSI B 175.1-2000 chainsaw understanding of the causes of these kickback standard reactive forces may help you avoid loss The reaction of the cutting force of the of control. chain causes a rotational force on the Section 5.11 of ANSI standard chainsaw in the direction opposite to the B 175.1-2000, sets certain performance chain movement. This may fling the bar and design criteria related to chainsaw The most common reactive forces are up and back in an uncontrolled arc kickback. –kickback, mainly in the plane of the bar. Under To comply with section 5.11 of ANSI some cutting circumstances the bar B 175.1-2000: – pushback, moves towards the operator, who may –pull-in. suffer severe or fatal injury. Kickback may occur, for example, Kickback: when the chain near the upper quadrant Kickback may occur when of the bar nose contacts the wood or is the moving saw chain pinched during limbing or when it is near the upper quadrant incorrectly used to begin a plunge or of the bar nose contacts a boring cut. solid object or is pinched.

Chainsaw Safety Manual 13 English / USA

a) saws with a displacement of less In addition, features designed to reduce Devices for reducing the risk of than 3.8 cubic inches (62 cm³). kickback injuries may lose some of their kickback injury effectiveness when they are no longer in – must, in their original condition, STIHL recommends the use of the their original condition, especially if they meet a 45° computer derived STIHL Quickstop chain brake on your have been improperly maintained. kickback angle when equipped with power-head with green labeled reduced Compliance with § 5.11 of ANSI B 175.1- certain cutting attachments. kickback bars and low kickback chains. 2000 does not automatic-ally mean that – and must be equipped with at least in a real life kickback the bar and chain two devices to reduce the risk of !Warning! will rotate at most 45°. kickback injury, such as a chain To reduce the risk of injury, stop using brake, low kickback chain, reduced !Warning! the saw immediately if the chain brake kickback bar, etc. does not function properly. Take the saw In order for powerheads below 3.8 cubic to your local STIHL Service Center! Do inch (62 cm³) displacement to comply not use the saw until the problem has with the computed kickback angle b) saws with a displacement of been rectified (see the section "Chain requirements of § 5.11 of ANSI B 175.1- 3.8 cubic inches (62 cm³) and above Brake"). 2000 use only the following cutting – must be equipped with at least one attachments: device designed to reduce the risk of kickback injury such as a chain – bar and chain combinations listed Quickstop chain brake brake, low kickback chain, reduced as complying in the "Specifications" STIHL has developed a chain stopping kickback bar, etc. section of the Owner's Manual or system designed to reduce the risk of The computer derived angles for saws – other replacement bar and chain injury in certain kickback situations. It is below 3.8 cubic inch (62 cm³) combinations marked in called a Quickstop chain brake. The displacement are measured by applying accordance with the standard for Quickstop is available as standard a computer program to test results from use on the powerhead or equipment on your STIHL chainsaw and a kickback test machine. – replacement chain designated is available for installation on most older "low kickback saw chain''. STIHL saws. Ask your dealer to retrofit !Warning! your older model saw with a chain brake. See the section on "Low kickback saw The computer derived angles of § 5.11 chain and reduced kickback bars" of ANSI B 175.1-2000 may bear no relationship to actual kickback bar rotation angles that may occur in real life cutting situations.

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!Warning! !Warning! Never operate your chainsaw without a An improperly maintained chain brake front hand guard. In a kickback situation may increase the time needed to stop this guard helps protect your left hand or the chain after activation, or may not other parts of your body. In addition, activate at all. removal of the hand guard on a saw equipped with a chain brake will !Warning! deactivate the chain brake. Never run the chainsaw above idle speed for more than 3 seconds when the !Warning! chain brake is engaged or the chain is No Quickstop or other chain brake pinched or otherwise caught in the cut. device prevents kickback. These Clutch slippage can cause excessive devices are designed to reduce the risk heat, leading to severe damage of the of kickback injury, if activated, in certain motor housing, clutch and oiler kickback situations. In order for the component and may interfere with the Quickstop to reduce the risk of kickback operation of the chain brake. If clutch injury, it must be properly maintained slippage in excess of 3 seconds has

001BA036 KN and in good working order. See the occurred, allow the motor housing to chapter entitled "Chain Brake" and cool before proceeding and check the When a kickback occurs, the guide bar "Maintenance, Repair and Storing" of operation of your chain brake as may rotate around the front handle. If the your Owner's Manual. In addition, there described in the chapter entitled "Chain cutting position is such that the must be enough distance between the Brake". Also make sure that the chain is operator's left hand is gripping the front bar and the operator to ensure that the not turning at idle speed (see above handle behind the hand guard, and if the Quickstop has sufficient time to activate "Important Adjustments"). left hand rotates around the front handle and stop the chain before potential and makes a sufficiently forceful contact contact with the operator. with the front hand guard, which is the Low kickback saw chain and reduced Quickstop activating lever, this contact kickback bars will activate the Quickstop. The chain STIHL offers a variety of bars and brake on most new model STIHL chains. STIHL reduced kickback bars chainsaws can also be activated by and low kickback chains are designed to inertia. See the chapter entitled "Chain Brake" of your Owner's Manual.

Chainsaw Safety Manual 15 English / USA

reduce the risk of kickback injury. Other Please ask your STIHL dealer to Low kickback chain chains are designed to obtain higher properly match your powerhead with the Some types of saw chain have specially cutting efficiency or sharpening ease but appropriate bar/chain combinations to designed components to reduce the may result in higher kickback tendency. reduce the risk of kickback injury. Green force of nose contact kickback. STIHL labeled bars and chains are STIHL has developed a color has developed low kickback chain for recommended for all powerheads. See codesystem to help you identify the your powerhead. your "STIHL Bar and Chain Information" STIHL reduced kickback bars and low leaflet for details. "Low kickback saw chain" is a chain kickback chains. Cutting attachments which has met the kickback with green warning decals or green !Warning! performance requirements of § 5.11.2.4 labels on the packaging are designed to Use of other, non-listed bar/chain of ANSI B 175.1-2000 (Safety reduce the risk of kickback injury. The combinations may increase kickback Requirements for Gasoline-Powered matching of green decaled powerheads forces and increase the risk of kickback ChainSaws) when tested in its original under 3.8 cubic inch (62 cm³) injury. New bar/chain combinations may condition on a selected representative displacement with green labeled bars be developed after publication of this sample of chainsaws below 3.8 cubic and green labeled chains gives literature, which will, in combination with inch (62 cm³) displacement specified in compliance with the computed kickback certain powerheads, comply with ANSI B 175.1-2000. angle requirements of ANSI § 5.11 of ANSI B 175.1-2000. Check B 175.1-2000 when the products are in with your STIHL dealer for such !Warning! their original condition. Products with combinations. There are potential powerhead and bar yellow decals or labels are for users with combinations with which low kickback extraordinary cutting needs and !Warning! saw chains can be used which have not experience and specialized training for been specifically certified to comply with dealing with kickback. Reduced kickback bars and low kickback chains do not prevent the 45° computer derived kickback STIHL recommends the use of its kickback, but they are designed to angle of § 5.11 of ANSI B 175.1-2000. green labeled reduced kickback bars, reduce the risk of kickback injury. They Some low kickback chains have not green labeled low kickback chains are available from your STIHL dealer. been tested with all powerhead and bar and a STIHL Quickstop chain brake combinations. for both experienced and !Warning! inexperienced chainsaw users. Even if your saw is equipped with a !Warning! Quickstop, a reduced kickback bar and/ A dull or improperly sharpened chain or low kickback chain, this does not may reduce or negate the effects of the eliminate the risk of injury by kickback. design features intended to reduce Therefore, always observe all safety precautions to avoid kickback situations.

16 Chainsaw Safety Manual English / USA

kickback energy. Improper lowering or To avoid kickback sharpening of the depth gauges or The best protection from personal injury shaping of the cutters may increase the that may result from kickback is to avoid chance and the potential energy of a kickback situations: kickback. Always cut with a properly sharpened chain. 1. Hold the chainsaw firmly with both hands and maintain a secure grip. 2. Be aware of the location of the guide

A 001BA037 KN Reduced kickback bar bar nose at all times. STIHL green labeled reduced kickback 3. Never let the nose of the guide bar A = Pull-in: bars are designed to reduce the risk of contact any object. Do not cut limbs kickback injury when used with STIHL with the nose of the guide bar. Be Pull-in occurs when the chain on the green labeled low kickback chains. especially careful when cutting bottom of the bar is suddenly stopped small, tough limbs, small size brush when it is pinched, caught or encounters !Warning! and saplings which may easily catch a foreign object in the wood. The When used with other, more aggressive the chain. reaction of the chain pulls the saw chains, these bars may be less effective 4 Don't overreach. forward and may cause the operator to in reducing kickback, and may result in lose control. higher kickback forces. 5. Don't cut above shoulder height. 6. Begin cutting and continue at full Pull-in frequently occurs when the throttle. bumper spike of the saw is not held Bow Guides securely against the tree or limb and 7. Cut only one log at a time. when the chain is not rotating at full !Warning! 8. Use extreme caution when speed before it contacts the wood. reentering a previous cut. Do not mount a bow guide on any STIHL !Warning! chainsaw. Any chainsaw equipped with 9. Do not attempt to plunge cut if you Use extreme caution when cutting small a bowguide is potentially very are not experienced with these size brush and saplings which may dangerous. The risk of kickback is cutting techniques. easily catch the chain and pull you off increased with a bow guide because of 10. Be alert for shifting of the log or balance. the increased kickback contact area. other forces that may cause the cut Low kickback chain will not significantly to close and pinch the chain. To avoid pull-in reduce the risk of kickback injury when 11. Maintain saw chain properly. Cut 1. Always start a cut with the chain used on a bow guide. with a correctly sharpened, properly rotating at full speed and the tensioned chain at all times. bumper spike in contact with the 12. Stand to the side of the cutting path wood. of the chainsaw. 2. Pull-in may also be prevented by using wedges to open the kerf or cut.

Chainsaw Safety Manual 17 English / USA

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

18 Chainsaw Safety Manual English / USA

45¡ A 45¡

B 001BA040 KN 001BA019 KN 001BA041 KN

Escape path Buttress roots Gunning sight First clear the tree base and work area If the tree has large buttress roots, cut When making the felling notch, use the from interfering limbs and brush and into the largest buttress vertically first gunning sight on the shroud and housing clean its lower portion with an ax. (horizontally next) and remove the to check the required direction of fall: resulting piece. Then, establish two paths of escape (B) : Position the saw so that the gunning and remove all obstacles. These paths sight points exactly in the direction should be generally opposite to the you want the tree to fall. planned direction of the fall of the tree (A) and about at a 45° angle. Place all tools and equipment a safe distance away from the tree, but not on the escape paths.

Chainsaw Safety Manual 19 English / USA

001BA042 LÄ 001BA052 KN 001BA043 KN

Conventional cut Open-face technique Making sapwood cuts A = felling notch - determines the A = felling notch - determines the : For medium sized or larger trees direction of the fall direction of the fall make cuts at both sides of the trunk, : For a conventional cut: For an open-face cut: at same height as subsequent felling cut. : : Properly place felling notch Properly place felling notch : Cut to no more than width of guide perpendicular to the line of fall, perpendicular to the line of fall, bar. close to the ground close to the ground This is especially important in : Cut down at app. 45-degree angle : Cut down at app. 50-degree angle softwood in summer - it helps to a depth of about 1/5 to 1/4 of the to a depth of app.1/5 to 1/4 of the prevent sapwood splintering when trunk diameter trunk diameter the tree falls. : Make second cut horizontal : Make second cut from below at app. : Remove resulting 45-degree piece 40 degree angle : Remove resulting 90-degree piece

20 Chainsaw Safety Manual English / USA

B C 001BA045 KN 001BA046 KN 001BA044 KN

B = Felling cut C = Hinge !Warning! Conventional and open-face technique: : Helps control the falling tree Be extremely careful with partially fallen : Do not cut through the hinge -you : Begin 1 to 2 inches (2,5 to 5 cm) trees which are poorly supported. When could lose control of the direction of higher than centre of felling notch the tree hangs or for some other reason the fall : Cut horizontally towards the felling does not fall completely, set the saw notch !Warning! aside and pull the tree down with a cable : Leave approx.1/10 of diameter winch, block and tackle or tractor. If you In order to reduce the risk of personal uncut. This is the hinge try to cut it down with your saw, you may injury, never stand directly behind the : Do not cut through the hinge - you be injured. tree when it is about to fall, since part of could lose control of the direction of the trunk may split and come back Felling cut for small diameter trees: the fall towards the operator (barber-chairing), simple fan cut Drive wedges into the felling cut where or the tree may jump backwards off the Engage the bumper spikes of the necessary to control the fall. stump. Always keep to the side of the chainsaw directly behind the location of falling tree. When the tree starts to fall, !Warning! the intended hinge and pivot the saw withdraw the bar, shut off the engine and around this point only as far as the If the tip of the bar contacts a wedge, it walk away on the preplanned escape hinge. The bumper spike rolls against may cause kickback. Wedges should be path. Watch out for falling limbs. of wood or plastic - never steel, which the trunk. can damage the chain.

Chainsaw Safety Manual 21 English / USA

3 1

001BA089 LÄ 3 2 2 First, cut a large, wide felling notch. Make a plunge cut in the centre of the notch. 1 The plunge cut is made with the guide bar nose. Begin the plunge cut by applying the lower portion of the guide bar nose to the tree at an angle. Cut until the depth of the kerf is about the same 001BA048 KN 001BA047 KN as the width of the guide bar. Next, align the saw in the direction in which the Felling cut for large diameter trees: Avoid repositioning the saw more than recess is to be cut. necessary. When repositioning for the !Warning! next cut, keep the guide bar fully With the saw at full throttle, insert the Felling a tree that has a diameter greater engaged in the kerf to keep the felling guide bar in the trunk. than the length of the guide bar requires cut straight. If the saw begins to pinch, Enlarge the plunge cut as shown in the use of either the sectioning felling cut or insert a wedge to open the cut. On the illustration. plunge-cut method. These methods are last cut, do not cut the hinge. extremely dangerous because they Plunge-cut method !Warning! involve the use of the nose of the guide There is an extreme danger of kickback Timber having a diameter more than bar and can result in kickback. Only at this point. Extra caution must be taken twice the length of the guide bar requires properly trained professionals should to maintain control of the saw. To make the use of the plunge-cut method before attempt these techniques. the felling cut, follow the sectioning making the felling cut. Sectioning method method described previously. 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.

22 Chainsaw Safety Manual English / USA

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

Limbing Limbing is removing the branches from a fallen tree. !Warning! There is an extreme danger of kickback during the limbing operation. Do not work with the nose of the bar. Be extremely cautious and avoid contacting the log or other limbs with the nose of the guide bar.

01BA051 LÄ 001BA033 KN Do not stand on a log while limbing it - 0 you may slip or the log may roll. Start limbing by leaving the lower limbs Bucking 2. Cut only one log at a time. to support the log off the ground. When Bucking is cutting a log into sections. 3. Shattered wood should be cut very underbucking freely hanging limbs, a carefully. Sharp slivers of wood may pinch may result or the limb may fall, !Warning! be caught and flung in the direction causing loss of control. If a pinch occurs, 1. When bucking, do not stand on the of the operator of the saw. stop the engine and remove the saw, by log. Make sure the log will not roll 4. When cutting small logs, place log lifting the limb. downhill. If on a slope, stand on the through "V" - shaped supports on uphill side of the log. Watch out for top of a sawhorse. Never permit Warning! ! rolling logs. another person to hold the log. Be extremely cautious when cutting Never hold the log with your leg or limbs or logs under tension (spring foot. poles). The limbs or logs could spring back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator.

Chainsaw Safety Manual 23 English / USA

MAINTENANCE, REPAIR AND changing the saw chain or cleaning the STORING saw. Do not attempt any maintenance or repair work not described in your Maintenance, replacement, or repair Owner's Manual. Have such work of the emission control devices and performed at your STIHL service shop systems may be performed by any only. nonroad engine repair establishment or individual. However if you claim !Warning! warranty for a component which has Never test the ignition system with not been serviced or maintained ignition wire terminal removed from properly or if nonapproved sparkplug or with unseated spark plug, replacement parts were used, STIHL since uncontained sparking may cause may deny warranty. a fire. Never operate a chainsaw that is damaged, improperly adjusted or not !Warning! completely or securely assembled. To reduce the risk of fire and burn injury, Follow the maintenance and repair use only spark plugs authorized by instructions in the appropriate section of STIHL. Always press spark plug boot

01BA050 LÄ 0 your Owner's Manual, especially those snugly onto spark plug terminal of the in the chapters "Mounting the Bar and proper size. (Note: If terminal has 5. Logs under strain: Risk of pinching! Chain", "Maintaining and Sharpening" detachable SAE adapter nut, it must be Always start relieving cut (1) at and "Chain Brake". attached.) A loose connection between compression side (A).Then make spark plug terminal and ignition wire bucking cut (2) at tension side (B). !Warning! connector in the boot may create arcing If the saw pinches, stop the engine Use only STIHL replacement parts for that could ignite combustible fumes and and remove it from the log. maintenance and repair. Use of parts cause a fire. Keep spark plug clean, and 6. Only properly trained professionals manufactured by others may cause make sure ignition lead is in good should work in an area where the serious or fatal injury. condition. logs, limbs and roots are tangled. !Warning! !Warning! Working in blow down areas is extremely hazardous. Always stop the engine and ensure that Do not operate your chainsaw if the the chain is stopped before making any muffler is damaged, missing or modified. 7. Drag the logs into a clear area adjustments, maintenance or repair An improperly maintained muffler will before cutting. Pull out exposed and work, increase the risk of fire and hearing loss. cleared logs first. Never touch a hot muffler or burn will

24 Chainsaw Safety Manual English / USA

result. If your muffler was equipped with For the proper and effective operation of a spark-arresting screen to reduce the the chain brake the brake band and risk of fire (e. g. in the USA, Canada and clutch drum must be kept free of dirt, Australia), never operate your saw if the grease and other foreign matter which screen is missing or damaged. may reduce friction of the band on the Remember that the risk of forest fires is drum. greater in hot or dry weather. For these reasons, each STIHL Keep the chain, bar and sprocket clean; chainsaw should be returned to trained replace worn sprockets or chains. Keep personnel such as your STIHL servicing the chain sharp. dealer for periodic inspection and You can spot a dull chain when easy-to- servicing of the brake system according cut wood becomes hard to cut and burn to the following schedule: marks appear on the wood. Heavy usage - every three months, Keep the chain at proper tension. Moderate usage - twice a year, Tighten all nuts, bolts and screws except Occasional usage - annually. the carburetor adjustment screws after each use. The chainsaw should also be returned immediately for maintenance whenever !Warning! the brake system cannot be thoroughly In order for the chain brake on your cleaned or there is a change in its STIHL chainsaw to properly perform its operating characteristics. function of reducing the risk of kickback For any maintenance please refer to the and other injuries, it must be properly maintenance chart and to the warranty maintained. Like an automobile brake, a statement near the end of this manual. chainsaw chain brake incurs wear each time it is engaged. Additionally, the daily maintenance schedule for your chainsaw set forth in The amount of wear will vary depending your STIHL Owner's Manual should be upon usage, conditions under which the strictly followed. saw is used and other factors. Excessive wear will reduce the effectiveness of the Store chainsaw in a dry place and away chain brake and can render it from children. Before storing for longer inoperable. than a few days, always empty the fuel tank (see chapter "Storing the Machine" in this manual).

Chainsaw Safety Manual 25 English / USA 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, resin-rich wood, tropical wood etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. before before starting work after finishing work or daily each after stop refueling weekly monthly every 12 months if problem if damaged as required Visual inspection (condition, leaks) XX Complete machine Clean X Throttle trigger, trigger interlock, Master Check operation XX Control Check operation XX Chain brake Check 1)2) X Check X Pickup body/filter in fuel tank Clean, replace filter element XX Replace pickup body 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 Inspect XX AV elements (rubber buffers, springs) Replace 1) X Cooling inlets Clean X Cylinder fins Clean XX 1) STIHL dealer 2) see "Chain brake"

26 Chainsaw Safety Manual English / USA

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, resin-rich wood, tropical wood etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. before before starting work after finishing work or daily each after refueling stop weekly monthly every 12 months problem if damaged if as required Check idle adjustment – chain must not rotate XX Carburetor Readjust idle X Spark plug Readjust electrode gap X All accessible screws and nuts Retighten X (not adjusting screws) 2) Inspect X Spark arresting screen* in muffler Clean or replace X Check X Chain catcher Replace X 2) Firmly tighten cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation

* see “Guide to Using this Manual“

Chainsaw Safety Manual 27 English / USA Main Parts of the Saw

1 Twist lock 2 Carburetor adjusting screws 14 3 Fuel pump (easy start*) 4 Decompression valve* 8 15 5 Chain brake 3 6 Muffler 4 7 Chain sprocket 9 1 6 8 Chain sprocket cover 2 5 9 Chain catcher 10 Chain tensioner (side) 11 Chain tensioner (front) 10 12 7 12 Guide bar 8 11 13 13 Oilomatic saw chain 14 Adjusting wheel of quick 9 208BA003 KN tensioner* 15 Handle of wingnut* (quick chain tensioner)

* see "Guide to Using this Manual"

28 Chainsaw Safety Manual English / USA

16 Oil filler cap 17 Bumper spike 19 18 Front hand guard 18 19 Front handle (handelbar) 20 Starter grip 21 21 Spark plug boot 20 22 Master Control lever 23 Fuel filler cap 25 17 24 Throttle trigger 22 16 26 25 Throttle trigger interlock 26 Rear handle # 24 27 Rear hand guard # Serial number 23 27 208BA004 KN

Chainsaw Safety Manual 29 English / USA

Definitions 9 Chain Catcher 18 Front Hand Guard 1 Twist Lock Helps to reduce the risk of operator Provides protection against Lock for carburetor box cover. contact by a chain if it breaks or projecting branches and helps 2 Carburetor Adjusting Screws comes off the bar. prevent left hand from touching the For fine tuning the carburetor. 10 Chain Tensioner chain if it slips off the handlebar. It 3Fuel Pump Permits precise adjustment of chain also serves as the lever for chain Fills carburetor with fuel to simplify tension. brake activation. starting. 11 Chain Tensioner 19 Front Handle (Handlebar) 4 Decompression Valve Permits precise adjustment of chain Handlebar for the left hand at the Releases compression pressure to tension. front of the saw. make starting easier. 12 Guide Bar 20 Starter Grip 5 Chain Brake Supports and guides the saw chain. The grip of the starter, for starting A device to stop the rotation of the the engine. 13 Oilomatic Saw Chain chain if activated in a kickback A loop consisting of cutters, tie 21 Spark Plug Boot situation by the operator's hand or straps and drive links. Connects the spark plug with the by inertia. ignition wire. 14 Adjusting Wheel 6 Muffler Permits precise adjustment of chain 22 Master Control Lever Reduces engine exhaust noise and tension. Lever for choke control, starting directs the exhaust gases. throttle, run and stop positions. 15 Handle of Wingnut 7 Chain Sprocket Must be released to allow chain to 23 Fuel Filler Cap The toothed wheel that drives the be tensioned with adjusting wheel. For closing the fuel tank. saw chain. 16 Oil Filler Cap 24 Throttle Trigger 8 Chain Sprocket Cover For closing the oil tank. Controls the speed of the engine. Covers the clutch and the sprocket. 17 Bumper Spike 25 Throttle Trigger Interlock Toothed stop for holding saw steady Must be depressed before the against wood. throttle trigger can be activated.

30 Chainsaw Safety Manual English / USA

26 Rear Handle The support handle for the right hand, located at the rear of the saw. 27 Rear Hand Guard Gives added protection to operator's right hand.

Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain")

Clutch Couples engine to chain sprocket when engine is accelerated beyond idle speed (not illustrated).

Anti-Vibration System The anti-vibration system includes a number of buffers designed to reduce the transmission of vibrations created by the engine and cutting attachment to the operator's hands (not illustrated).

Chainsaw Safety Manual 31 English / USA

32 Chainsaw 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 / English USA SM_Motorsäge_U1.fm Seite 0 Freitag, 12. September 2003 12:31 12

STIH)

Chainsaw Safety Manual English / USA Contents

P r i nted i n risk of kickback injury STIHL recom-

Chainsaw Safety Manual 1 English / USA Some Important Safety Precautions for Chain Saw Users

2 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 3 English / USA Safety Precautions

4 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 5 English / USA

6 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 7 English / USA

8 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 9 English / USA

10 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 11

English / USA 001BA018 LA 001BA018 001BA082 KN

12 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 13 English / USA

14 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 15 English / USA

16 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 17 English / USA

18 Chainsaw Safety Manual English / USA

45¡ A 45¡

B 001BA040 KN 001BA019 KN 001BA041 KN

Chainsaw Safety Manual 19 English / USA

001BA042 LÄ 001BA052 KN 001BA043 KN

20 Chainsaw Safety Manual English / USA

B C 001BA045 KN 001BA046 KN 001BA044 KN

Chainsaw Safety Manual 21 English / USA

3 1

22 Chainsaw Safety Manual English / USA

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

Chainsaw Safety Manual 23 English / USA

24 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 25 English / USA Maintenance Chart

26 Chainsaw Safety Manual English / USA

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, resin-rich wood, tropical wood etc.), shorten the specified intervals accordingly. If you only use the saw occasionally, extend the intervals accordingly. before before starting work after finishing work or daily each after refueling stop weekly monthly every 12 months problem if damaged if as required Check idle adjustment – chain must not rotate XX Carburetor Readjust idle X Spark plug Readjust electrode gap X All accessible screws and nuts Retighten X (not adjusting screws) 2) Inspect X Spark arresting screen* in muffler Clean or replace X Check X Chain catcher Replace X 2) Firmly tighten cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation

* see “Guide to Using this Manual“

Chainsaw Safety Manual 27 English / USA Main Parts of the Saw

* see "Guide to Using this Manual"

28 Chainsaw Safety Manual English / USA

Chainsaw Safety Manual 29 English / USA

30 Chainsaw Safety Manual English / USA

26 Rear Handle The support handle for the right hand, located at the rear of the saw. 27 Rear Hand Guard Gives added protection to operator's right hand.

Guide Bar Nose The exposed end of the guide bar. (not illustrated, see chapter "Tensioning the Saw Chain")

Clutch Couples engine to chain sprocket when engine is accelerated beyond idle speed (not illustrated).

Chainsaw Safety Manual 31 English / USA

32 Chainsaw 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 / English USA