Stihl MSE 210 C Instruction Manual

STIHL MSE 170 C, 210 C

WARNING To reduce the risk of

kickback injury use STIHL reduced kickback bar and STIHL low kickback chain as specified in this manual or other available low kickback components.

ADVERTENCIA Para reducir el

riesgo de lesionarse como resultado de un culatazo, utilice la barra y la cadena de contragolpe reducido de la forma especificada en este manual o de otros componentes reductores de contragolpe.

Read Instruction Manual thoroughly before use and follow all safety precautions – improper use can cause serious or fatal injury.

Antes de usar la máquina lea y siga todas las precauciones de seguridad dadas en el manual de instrucciones – el uso incorrecto puede causar lesiones graves o mortales.

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Instruction Manual Manual de instrucciones

Instruction Manual 1 - 46

Manual de instrucciones 47 - 98

Contents

English

Guide to Using this Manual 2 Safety Precautions and Working

Techniques 3 General Power Tool Safety

Warnings 22 Packing List 25 Cutting Attachment 25 Mounting the Bar and Chain (quick

chain tensioner) 26

Original Instruction ManualPrinted on chlorine-free paper

Tensioning the Saw Chain (quick chain tensioner) 28

Checking Chain Tension 28 Chain Lubricant 28 Filling Chain Oil Tank 29 Checking Chain Lubrication 31 Coasting Brake 31 Chain Brake 31 Connecting to Power Supply 32 Switching On 33 Switching Off 33 Overload Cutout 34 Operating Instructions 34

Printing inks contain vegetable oils, paper can be recycled.

Taking Care of the Guide Bar 35 Motor Cooling 36 Storing the Machine 36 Checking and Replacing the Chain

Sprocket 36 Maintaining and Sharpening the

Saw Chain 37 Maintenance and Care 41 Main Parts 42 Specifications 43

Ordering Spare Parts 44 Maintenance and Repairs 45 Disposal 45 Trademarks 45 Addresses 46

Allow only persons who fully understand this manual to operate your chain saw.

To receive maximum performance and satisfaction from your STIHL chain saw, it is important that you read, understand and follow the safety precautions and the operating and maintenance instructions in chapter "Safety Precautions and Working Techniques" before using your chain saw. For further information you can go to www.stihlusa.com.

Contact your STIHL dealer or the STIHL distributor for your area if you do not understand any of the instructions in this manual.

WARNING

Because a chain saw is a high-speed wood-cutting tool, some special safety precautions must be observed as with any other power saw to reduce the risk of personal injury. Careless or improper use may cause serious or even fatal injury.

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MSE 170 C, MSE 210 C

English

Guide to Using this Manual

This instruction manual covers a STIHL electric chain saw which is also referred to as the saw, power tool or machine in the descriptions.

Pictograms

The meanings of the pictograms attached to or embossed on the machine are explained in this manual.

Depending on the model concerned, the following pictograms may be on your machine.

Chain oil tank; chain oil

Direction of chain rotation

Tension the chain

Symbols in Text

Many operating and safety instructions are supported by illustrations.

The individual steps or procedures described in the manual may be marked in different ways:

N A bullet marks a step or procedure. A description of a step or procedure that

refers directly to an illustration may contain item numbers that appear in the illustration. Example:

N Loosen the screw (1). N Lever (2) ...

In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such paragraphs are marked with the symbols and signal words described below:

DANGER

Indicates an imminent risk of severe or fatal injury.

Engineering Improvements

STIHL’s philosophy is to continually improve all of its products. As a result, engineering changes and improvements are made from time to time. Therefore, some changes, modifications and improvements may not be covered in this manual. If the operating characteristics or the appearance of your machine differs from those described in this manual, please contact your STIHL dealer or the STIHL distributor for your area for assistance.

Thermal overload cutout

Unlock

WARNING

Indicates a hazardous situation which, if not avoided, could result in severe or fatal injury.

NOTICE

Indicates a risk of property damage,

Lock

including damage to the machine or its individual components.

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Safety Precautions and Working Techniques

Because a chain saw is a high-speed, fast-cutting power tool, special safety precautions must be observed to reduce the risk of personal injury.

It is important that you read, fully understand and observe the following safety precautions and warnings. Read the instruction manual and the safety instructions periodically. Careless or improper use may cause serious or fatal injury. Save the instruction manual for future reference.

WARNING

The use of this chain saw may be hazardous. The saw chain has many sharp cutters. If the cutters contact your flesh, they will cut you, even if the chain is not moving.

WARNING

Reactive forces, including kickback, can be dangerous. Pay special attention to the section on reactive forces.

Have your STIHL dealer show you how to operate your chain saw. All safety precautions that are generally observed when working with an axe or a hand saw also apply to the operation of chain saws. Observe all applicable federal, state and local safety regulations, standards and ordinances.

WARNING

Do not lend or rent your chain saw without the instruction manual. Be sure that anyone using it understands the information contained in this manual.

The use of noise emitting chain saws may be restricted to certain times by national, state or local regulations.

Use your chain saw only for cutting wooden objects.

WARNING

Working with an electric chain saw in the woods – i.e. felling or limbing – is very dangerous. The freedom of movement necessary for this work is impaired by the power cable! Electric chain saws are intended for stationary use in yards, buildings, etc.

WARNING

Do not use it for other purposes, since misuse may result in personal injury or property damage, including damage to the chain saw.

WARNING

Minors should never be allowed to use this chain saw. Bystanders, especially children, and animals should not be allowed in the area where it is in use.

Most of these safety precautions and warnings apply to the use of all STIHL chain saws. Different models may have different parts and controls. See the appropriate section of your instruction manual for a description of the controls and the function of the parts of your model.

WARNING

Always switch off the motor, move front hand guard to ƒ and disconnect the plug from the power supply before transporting, storing or carrying out any work on the chain saw. This avoids the risk of the motor starting unintentionally.

STIHL recommends the use of genuine STIHL replacement parts. They are specifically designed to match your model and meet your performance requirements.

Safe use of a chain saw involves 1 the operator 2 the chain saw 3 the use of the chain saw.

THE OPERATOR

Physical Condition You must be in good physical condition

and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate this chain saw when you are fatigued.

WARNING

Be alert – if you get tired, take a break. Tiredness may result in loss of control. Working with any power tool can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating this chain saw.

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WARNING

Prolonged use of a chain saw (or other power tools) exposing the operator to vibrations may produce whitefinger disease (Raynaud's phenomenon) or carpal tunnel syndrome.

These conditions reduce the hand's ability to feel and regulate temperature, produce numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis.

All factors which contribute to whitefinger disease are not known, but cold weather, smoking and diseases or physical conditions that affect blood vessels and blood transport, as well as high vibration levels and long periods of exposure to vibration are mentioned as factors in the development of whitefinger disease. In order to reduce the risk of whitefinger disease and carpal tunnel syndrome, please note the following:

– Wear gloves and keep your hands

warm.

– Keep the chain saw well

maintained. A chain saw with loose components will tend to have higher vibration levels.

– Keep the saw chain sharp and the

saw well maintained. A dull saw chain will increase cutting time, and pressing a dull saw chain through wood will increase the vibrations transmitted to your hands.

– Maintain a firm grip at all times, but

do not squeeze the handles with constant, excessive pressure. Take frequent breaks.

All the above-mentioned precautions do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular users should closely monitor the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.

WARNING

According to STIHL’s current knowledge, the electric motor of this chain saw should not interfere with a pacemaker. When in doubt, however, persons with a pacemaker should consult their physician and the pacemaker manufacturer before operating this chain saw.

Proper Clothing

WARNING

To reduce the risk of injury, the operator should wear proper protective apparel.

Clothing must be sturdy and snug-fitting, but allow complete freedom of movement.To reduce the risk of cut injuries, wear the type of overalls, long pants or chaps that contain pads of cut-retardant material. Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, unconfined long hair or anything that could become caught on branches, brush or the moving parts of the chain saw. Secure hair so it is above shoulder level..

Good footing is very important. Wear sturdy boots with nonslip soles. Steel-toed safety boots are recommended. Never wear sandals, flip-flops or go barefoot.

Always wear heavy-duty work gloves (e.g. made of leather or wear resistant material) when handling the chain saw and the cutting tool. Heavy-duty, nonslip gloves improve your grip and help to protect your hands.

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001BA069 LÄ

To reduce the risk of injury to your eyes never operate your power tool unless wearing goggles or properly fitted protective glasses with adequate top and side protection complying with ANSI Z87 "+" (or your applicable national standard). If there is a risk of injury to your face, STIHL recommends that you also wear a face shield or face screen over your goggles or protective glasses.

Wear an approved safety hard hat to reduce the risk of injury to your head. Chain saw noise may damage your hearing. Wear sound barriers (ear plugs or ear mufflers) to help protect your hearing. Continual and regular users should have their hearing checked regularly.

Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted.

THE CHAIN SAW

For illustrations and definitions of the chain saw parts see the chapter on "Main Parts."

WARNING

Never modify this chain saw in any way. Only attachments supplied by STIHL or expressly approved by STIHL for use with the specific STIHL model are authorized. Although certain unauthorized attachments are useable with STIHL chain saws, their use may, in fact, be extremely dangerous.

WARNING

Never operate your chain saw if it is damaged, improperly adjusted or maintained, or not completely or securely assembled.

If this chain saw is subjected to unusually high loads for which it was not designed (e.g. heavy impact or a fall), always check that it is in good condition before continuing work. Check in particular that the controls and safety devices are working properly. Do not continue operating this machine if it is damaged. In case of doubt, have it checked by your STIHL servicing dealer.

THE USE OF THE CHAIN SAW

Transporting the Chain Saw

WARNING

Always switch off the motor, move front hand guard to ƒ before putting the chain saw down. Carrying a chain saw with the motor running may be extremely dangerous.

Accidental acceleration of the motor can cause the saw chain to rotate. Always engage the chain brake by moving the front hand guard to ƒ when taking more than a few steps.

By hand: When transporting your chain saw by hand, the motor must be switched off and the chain saw must be in the proper position, i.e., grip the top handle; the chain guard (scabbard) should be over the chain and guide bar, which should point backwards, away from the direction in which you are walking.

WARNING

Do not carry the chain saw by the power cable. Carry the cable in your hand. If the cable is dragged on a rough surface (concrete etc.) the cable may become damaged.

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By vehicle: When transporting in a vehicle, keep saw chain and bar covered with the chain guard (scabbard). Properly secure your chain saw to prevent turnover and damage to the chain saw.

Before Operation Take off the chain guard (scabbard) and

inspect the chain saw for proper condition and operation. (See the maintenance chart near the end of the instruction manual.)

WARNING

Always check your chain saw for proper condition and operation before starting, particularly the trigger switch, trigger switch lockout, front handle guard and cutting attachment. The trigger switch and the trigger switch lockout must move freely and always spring back to the idle position. Ensure that the trigger switch will not engage when the trigger switch lockout is not pressed. Never attempt to modify the controls or safety devices.

For proper assembly of the bar and chain follow the procedure described in the chapter "Mounting the Bar and Chain" of your instruction manual. STIHL Oilomatic saw chain, guide bar and sprocket must match each other in gauge and pitch. Before replacing any bar and chain, see the chapter entitled "Specifications" in the instruction manual and the chapter "Reactive Forces including Kickback".

Since longer bars add weight and may be more difficult to control, select the shortest bar that will meet your cutting needs.

WARNING

Proper tension of the saw chain is extremely important. In order to avoid improper setting, the tensioning procedure must be followed as described in your manual. Always make sure the hexagonal nut(s) for the sprocket cover is (are) tightened securely after tensioning the saw chain in order to secure the bar. Never start the chain saw with the sprocket cover loose. Check saw chain tension once more after having tightened the nut(s) and thereafter at regular intervals (whenever the saw is shut off). If the saw chain becomes loose while cutting, switch off the motor, disconnect the chain saw from the power supply and then tighten. Never try to adjust the saw chain while the motor is running!

WARNING

After adjusting a saw chain, start the chain saw, let the motor run for a while, then switch motor off and recheck saw chain tension. Proper saw chain tension is very important at all times.

Keep the handles clean and dry at all times; it is particularly important to keep them free of moisture, pitch, oil, grease or resin in order for you to maintain a firm grip and properly control your chain saw.

WARNING

Be sure that the guide bar and saw chain are clear of you and all other obstructions and objects, including the ground. If the upper quadrant of the tip of the bar touches any object, it may cause kickback to occur (see section on

reactive forces). Never attempt to start the chain saw when the guide bar is in a cut or kerf.

For specific starting instructions, see the appropriate section of your instruction manual.

Electric Precautions Special precautions for electric chain

saws must be observed to reduce the risk of personal injury and property damage from fire and electric shock.

This electric chain saw is doubleinsulated.

WARNING

To reduce risk of serious or fatal injury from electrocution, never use your chain saw if casing around motor is cracked or damaged.

WARNING

The electrical power voltage must agree with the voltage specified on the chain saw's name plate. Improper voltage may cause the motor to overheat, which will damage the chain saw and may cause personal injury.

WARNING

To reduce the risk of electrocution never work in rain or wet places – the electric motor is not waterproof! Do not leave the chain saw outdoors in the rain and do not operate it if it shows any signs of dampness.

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English

9931BA027 KN

WARNING

To reduce the risk of personal injury from fire and explosion, do not use the chain saw in the presence of flammable liquids or gases. The sparks from an electric chain saw may be a source of ignition!

WARNING

Inspect the power cable before and after each use for signs of damage or aging. In order to reduce the risk of serious or fatal injury from electrocution, never use your chain saw if the power cable is cut, cracked, worn or damaged. Turn off power at chain saw, disconnect the plug immediately and have dealer replace such a cable.

Avoid damage to the power cable. Keep it away from heat, oil and sharp edges. Never jerk power cable to disconnect the plug from the wall outlet. To unplug, grasp the plug, not the cable.

Always disconnect the plug when the chain saw is not in use.

Extension Cords

WARNING

To reduce the risk of electric shock, use only extension cords that are intended for outdoor use. These extension cords

are identified by a marking "Acceptable for use with outdoor appliances; store indoors while not in use."

Do not use damaged extension cords. Examine extension cord before using and replace if damaged. Do not abuse extension cord and do not yank on any cord to disconnect.

If you use an extension cord, be sure to use one heavy enough to carry the current your electric saw will draw. An improper gauged extension cord will cause a drop in wire voltage resulting in loss of power and overheating. Use only extension cords having an electrical rating not less than the rating of the product.

The following table shows the correct size to use depending on cord length and machine label ampere rating.

Minimum Wire Size for Extension Cords for 120 Volt Appliances

Cord types: SJW-A or SJTW-A Round jacketed cords

Using not more than 12 amps Cord length (ft) 50 100 150 Wire size (AWG) 16 14 12

Using not more than 15 amps Cord length (ft) 50 100 150 Wire size (AWG) 12

not recommended

1) 1)

Listed by UL, W-A marking on cable jacket indicates "use outdoors". Appropriate extension cords are available in stores spezializing in electrical equipment.

To reduce the risk of electric shock, this equipment has a polarized plug (one blade is wider than the other).This plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. Do not change the plug in any way.

WARNING

Position the electric cable so that it will not be damaged when using the electric saw. Always keep the electric cable behind the operator and away from the bar and chain. Always be sure that your cable does not become entangled with obstacles or objects. Damaged cables may cause electrocution. If you take a break at your work, always disconnect the cable.

Holding and Controlling the Chain Saw Always hold the chain saw firmly with

both hands when you are working. Place your left hand on the front handle bar and your right hand on the rear handle.

Left-handers should follow these instructions too. Wrap your fingers tightly around the handles, keeping the handles cradled between your thumb and forefinger. With your hands in this position, you can best oppose and

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001BA031 KN

001BA082 KN

absorb the push, pull and kickback forces of your saw without losing control (see section on reactive forces).

WARNING

To reduce the risk of serious or fatal injury to the operator or bystanders from loss of control, never use the chain saw with one hand. It is more difficult for you to control reactive forces and to prevent the bar and chain from skating or bouncing along the limb or log.

WARNING

To reduce the risk of cut injuries, keep hands and feet away from the cutting tool. Never touch a moving cutting tool with your hand or any other part of your body.

WARNING

Keep proper footing and balance at all times. Special care must be taken in slippery conditions (wet ground, snow) and in difficult, overgrown terrain. Be extremely cautious when working on slopes or uneven ground. Watch for hidden obstacles such as tree stumps, roots, rocks, holes and ditches to avoid stumbling. There is increased danger of slipping on freshly debarked logs. For better footing, clear away fallen branches, scrub and cuttings. Use extreme caution when cutting small-size brush, branches and saplings because

slender material may catch the saw chain and be whipped toward you or pull you off balance.

WARNING

Take extreme care in wet and freezing weather (rain, snow, ice). Put off the work when the weather is windy, stormy or rainfall is present.

WARNING

To reduce the risk of injury from loss of control, never work on a ladder or any other insecure support. Never hold the machine above shoulder height. Do not overreach.

Position the chain saw in such a way that your body is clear of the cutting attachment whenever the motor is running. Stand to the left of cut while bucking.

Never put pressure on the chain saw when reaching the end of a cut. The pressure may cause the bar and rotating saw chain to pop out of the cut or kerf, go out of control and strike the operator or some other object. If the rotating saw chain strikes some other object, a reactive force may cause the moving saw chain to strike the operator.

STIHL recommends that first-time users should cut logs on a sawhorse – see "Cutting small logs."

Working Conditions Operate your chain saw only under good

visibility and daylight conditions. Work carefully.

WARNING

Your chain saw is a one-person machine. Do not allow other persons in the general work area. Stop the motor immediately if you are approached.

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WARNING

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

WARNING

To reduce the risk of injury to bystanders and damage to property, never let your chain saw run unattended. When it is not in use (e. g. during a work bre ak) , switc h it off and make sure that unauthorized persons do not use it. To do this, move the front hand guard to ƒ and disconnect the plug from the power supply.

WARNING

Operate your chain saw so that it produces a minimum of noise – do not run motor unnecessarily and accelerate the motor only for cutting.

WARNING

Use of this chain saw (including sharpening the saw chain) can generate dust, mist and fumes containing chemicals that are known to cause respiratory problems, cancer, birth defects, or other reproductive harm. If you are unfamiliar with the risks associated with the particular dust, mist or fume at issue, consult your employer, governmental agencies such as OSHA and NIOSH and other sources on hazardous materials. California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, etc.

WARNING

Inhalation of certain dusts, especially organic dusts such as mold or pollen, can cause susceptible persons to have an allergic or asthmatic reaction. Substantial or repeated inhalation of dust and other airborne contaminants, in particular those with a smaller particle size, may cause respiratory or other illnesses. This includes wood dust, especially from hardwoods, but also from some softwoods such as Western Red Cedar. Control dust (such as saw dust) and mists (such as oil mist from chain lubrication) at the source where possible. Use good work practices, such as always cutting with a properly sharpened saw chain (which produces wood chips rather than fine dust) and operating the unit so that the wind or operating process directs any dust raised by the chain saw away from the operator. Follow the recommendations of EPA/OSHA/NIOSH and occupational and trade associations with respect to dust ("particulate matter"). When the inhalation of dust cannot be substantially controlled, i.e., kept at or near the ambient (background) level, the operator and any bystanders should wear a respirator approved by NIOSH / MSHA for the type of dust encountered.

WARNING

Breathing asbestos dust is dangerous and can cause severe or fatal injury, respiratory illness or cancer. The use and disposal of asbestos-containing products have been strictly regulated by OSHA and the Environmental Protection Agency. Do not use your chain saw to cut or disturb asbestos or asbestos-

containing products. If you have any reason to believe that you might be cutting asbestos, immediately stop cutting and contact your employer or a local OSHA representative.

Operating Instructions

WARNING

Never touch a saw chain with your hand or any part of your body when the motor is running, even when the chain is not rotating.

In the event of an emergency, switch off the motor immediately, engage the chain brake by moving the front hand guard to ƒ and disconnect the plug from the power supply.

WARNING

Always switch off the motor before putting the chain saw down.

WARNING

The saw chain continues to move for a short period after the trigger switch is fully released.

WARNING

Your chain saw is equipped with a chain catcher. It is designed to reduce the risk of personal injury in the event of a thrown or broken chain. From time to time, the catcher may be damaged or removed. To reduce the risk of personal injury, do not operate a chain saw with a damaged or missing chain catcher.

If this chain saw is subjected to unusually high loads for which it was not designed (e. g. heavy impact or a fall),

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001BA257 KN

always check that it is in good condition before continuing work. Check in particular that the controls and safety devices are working properly. Do not continue operating this chain saw if it is damaged. In case of doubt, have it checked by your STIHL servicing dealer.

Your chain saw is not designed for prying or shoveling away limbs, roots or other objects. Such use could damage the cutting attachment.

WARNING

When sawing, make sure that the saw chain does not touch any foreign materials such as rocks, fences, nails and the like. Such objects may be flung off, damage the saw chain or cause the chain saw to kickback.

WARNING

If the rotating saw chain strikes a rock or other hard object, sparks may be created, which can ignite flammable materials under certain circumstances. Flammable materials can include dry vegetation and brush, particularly when weather conditions are hot and dry. Do not use your chain saw around flammable materials or around dry vegetation or brush when there is a risk of fire or wildfire. Contact your local fire authorities or the U.S. Forestry Service if you have any question about whether vegetation and weather conditions are suitable for the use of a chain saw.

WARNING

Take special care when cutting shattered wood because of the risk of injury from slivers being caught and thrown in your direction.

Check the cutting attachment at regular short intervals during operation, or immediately if there is a noticeable change in cutting behavior:

– Switch off the motor. – Move front hand guard to ƒ. – Disconnect the plug from the power

supply.

The motor is not waterproof. Never work with the chain saw in the rain or in wet or very damp locations.

Do not leave the machine outdoors in the rain.

DANGER

Do not rely on the chain saw ’s insulation against electric shock. To reduce the risk of electrocution, never operate this chain saw in the vicinity of any wires or cables (power, etc.) which may be carrying electric current. To reduce risk of electrocution, take extra precautions when cutting near power lines. Have the power switched off before starting cutting work in the immediate vicinity of power lines.

REACTIVE FORCES INCLUDING KICKBACK

WARNING

Reactive forces may occur any time the chain is rotating. Reactive forces can cause serious personal injury.

The powerful force used to cut wood can be reversed and work against the operator. If the rotating saw chain is suddenly and significantly slowed or stopped by contact with any solid object such as a log or branch or is pinched, the reactive forces may occur instantly. These reactive forces may result in loss of control, which, in turn, may cause serious or fatal injury. An understanding of the causes of these reactive forces may help you avoid the element of surprise and loss of control. Surprise contributes to accidents.

The most common reactive forces are:

– kickback, – pushback, – pull-in.

WARNING

Kickback:

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001BA035 KN

Kickback may occur when the moving saw chain near the upper quadrant of the bar nose contacts a solid object or is pinched.

When this occurs, the energy driving the saw chain can create a force that moves the chain saw in a direction opposite to the saw chain movement at the point where the saw chain is slowed or stopped. This may fling the bar up and back in a lightning fast reaction mainly in the plane of the bar and can cause severe or fatal injury to the operator.

Kickback may occur, for example, when the saw chain near the upper quadrant of the bar nose contacts the wood or is pinched during limbing or when it is incorrectly used to begin a plunge or boring cut.

The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the chain saw. Many factors influence the occurrence and force of the kickback reaction. These include saw chain speed, the speed at which the bar and saw chain contact the object, the angle of contact, the condition of the saw chain and other factors.

The type of bar and saw chain you use is an important factor in the occurrence and force of the kickback reaction. Some STIHL bar and saw chain types are designed to reduce kickback forces. STIHL recommends the use of reduced kickback bars and low kickback chains.

Chain Saw Kickback Standard

The following standards apply with respect to kickback:

– § 19.108 of UL 60745-2-13 – § 5.11 of ANSI/OPEI B175.1-2012

These standards, in the following referred to as "the chain saw kickback standards" set certain performance and design criteria related to chain saw kickback.

To comply with the chain saw kickback standards, electric chain saws

– must, in their original condition,

meet a 45° computer derived kickback angle when equipped with certain cutting attachments,

– and must be equipped with at least

two devices to reduce the risk of kickback injury, such as a chain brake, low kickback chain, reduced kickback bar, etc.

The computer derived angles for electric saws are measured by applying a computer program to test results from the kickback test machine.

WARNING

The computer derived angles of the chain saw standards may bear no relationship to actual kickback bar rotation angles that may occur in real life cutting situations.

In addition, features designed to reduce kickback injuries may lose some of their effectiveness when they are no longer in their original condition, especially if they have been improperly maintained. Compliance with the chain saw kickback standards does not automatically mean that in a real life kickback the bar and saw chain will rotate at most 45°.

WARNING

In order for chain saws to comply with the computed kickback angle requirements of the chain saw kickback standards use only the following cutting attachments:

– bar and saw chain combinations

listed as complying in the "Specifications" section of the instruction manual or

– other replacement bar and saw

chain combinations marked in accordance with the standards for use on the chain saw or

– replacement saw chain designated

"low kickback saw chain.''

See the section on "Low Kickback Saw Chain and Reduced Kickback Bars."

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001BA174 KN

Devices for Reducing the Risk of Kickback Injury

STIHL recommends the use of the STIHL Quickstop chain brake on your chain saw with green labeled reduced kickback bars and low kickback saw chains.

WARNING

To reduce the risk of injury, never use a saw if the chain brake does not function properly. Take the saw to your local STIHL servicing dealer. Do not use the saw until the problem has been rectified.

STIHL Quickstop Chain Brake STIHL has developed a chain stopping

system designed to reduce the risk of injury in certain kickback situations. It is called a Quickstop chain brake.

There are two mechanisms for activating the chain brake if it is in a properly maintained condition:

– manual activation: If a kickback

occurs, the chain saw moves upwards towards the user in a rotating motion around the front handle. The brake is designed to engage if the left hand contacts the front guard, which is the activation lever for the brake, and pushes it forward.

– inertia activation: All STIHL chain

saws are equipped with an interia Quickstop chain brake. If the kickback impulse is strong enough, this alone is sufficient to engage the brake even without contacting the front hand guard.

WARNING

Never operate your chain saw without a front hand guard. In a kickback situation this guard helps protect your left hand and other parts of your body. In addition, removal of the hand guard on a chain saw equipped with a Quickstop chain brake will disable the activation mechanism of the chain brake.

WARNING

No Quickstop or other chain brake device prevents kickback. These devices are designed to reduce the risk of kickback injury, if activated, in certain kickback situations. In order for the Quickstop to reduce the risk of kickback injury, it must be properly maintained and in good working order. See the chapter of your instruction manual entitled "Chain Brake" and the section "Maintenance, Repair and Storing" at the end of these Safety Precautions. In addition, there must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to activate and stop the saw chain before potential contact with the operator.

WARNING

An improperly maintained chain brake may increase the time needed to stop the saw chain after activation, or may not activate at all.

Low Kickback Saw Chain and Reduced Kickback Bars

STIHL offers a variety of bars and saw chains. STIHL reduced kickback bars and low kickback saw chains are

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designed to reduce the risk of kickback injury. Other saw chains are designed to achieve higher cutting performance or sharpening ease, but in turn are more prone to kickback.

STIHL has developed a color code system to help you identify the STIHL reduced kickback bars and low kickback saw chains. Cutting attachments with green warning labels on the packaging are designed to reduce the risk of kickback injury. The matching of green marked or labeled chain saws with green labeled bars and green labeled saw chains gives compliance with the computed kickback angle requirements of the chain saw standards when the products are in their original condition. Products with yellow labels are for users with extraordinary cutting needs, having experience and specialized training for dealing with kickback.

STIHL recommends the use of its green labeled reduced kickback bars, green labeled low kickback saw chains and a chain saw equipped with a STIHL Quickstop chain brake for both experienced and inexperienced chain saw users.

Please ask your STIHL dealer to properly match your chain saw with the appropriate bar/saw chain combination to reduce the risk of kickback injury. Green labeled bars and saw chains are recommended for all chain saws. See your "STIHL Bar and Chain Information" leaflet for details.

injury. New bar/saw chain combinations may be developed after publication of this literature, which will, in combination with certain electric chain saws, comply with the chain saw standards as well. Check with your STIHL dealer for such combinations.

WARNING

Reduced kickback bars and low kickback saw chains do not prevent kickback, but they are designed to reduce the risk of kickback injury. They are available from your STIHL dealer.

WARNING

Even if your saw is equipped with a Quickstop, a reduced kickback bar and/or low kickback saw chain, this does not eliminate the risk of injury by kickback. Therefore, always observe all safety precautions to avoid kickback situations.

Low Kickback Saw Chain Some types of saw chains have

specially designed components to reduce the force of nose contact kickback. STIHL has developed low kickback saw chains for your chain saw.

A "low kickback saw chain" is a saw chain that has met the kickback performance requirements of ANSI/OPEI B175.1-2012 when tested according to the provisions specified in ANSI/OPEI B175.1-2012.

been specifically certified to comply with the 45° computer derived kickback angle of the chain saw standards. Some low kickback saw chains have not been tested with all chain saw and bar combinations.

WARNING

A blunt or incorrectly sharpened saw chain may reduce or negate the effects of the design features intended to reduce kickback energy. Improper lowering or sharpening of the depth gauges as well as changing the shape of the cutters may increase the risk and the energy of kickback. Always cut with a properly sharpened saw chain.

Reduced Kickback Bars STIHL green labeled reduced kickback

bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback saw chains.

WARNING

When used with other, more aggressive saw chains, these bars may be less effective in reducing kickback.

WARNING

For a properly balanced saw and in order to comply with the chain saw standards, use only bar lengths listed in the specifications chapter of the instruction manual for your chain saw.

WARNING

Use of other, non-listed bar/saw chain combinations may increase kickback forces and increase the risk of kickback

MSE 170 C, MSE 210 C

WARNING

There are potential chain saw and bar combinations with which low kickback saw chains can be used which have not

English

001BA037 KN

001BA038 KN

To avoid kickback The best protection from personal injury

that may result from kickback is to avoid kickback situations:

1. Hold the chain saw firmly with both hands and maintain a secure grip. Don’t let go.

2. Be aware of the location of the guide bar nose at all times.

3. Never let the nose of the guide bar contact any object. Do not cut limbs with the nose of the guide bar. Be especially careful near wire fences and when cutting small, tough limbs, small size brush and saplings which may easily catch the saw chain.

4. Don't overreach.

5. Don't cut above shoulder height.

6. Begin cutting and continue at full speed.

7. Cut only one log at a time.

8. Use extreme caution when reentering a previous cut.

9. Do not attempt to plunge cut if you are not experienced with these cutting techniques.

10. Be alert for shifting of the log or other forces that may cause the cut to close and pinch the saw chain.

11. Maintain saw chain properly. Cut with a correctly sharpened, properly tensioned saw chain at all times.

12. Stand to the side of the cutting path of the chain saw.

Bow Guides

WARNING

Do not mount a bow guide on any STIHL chain saw. Any chain saw equipped with a bow guide is potentially very dangerous. The risk of kickback is increased with a bow guide because of the increased kickback contact area. Low kickback saw chain will not significantly reduce the risk of kickback injury when used on a bow guide.

A=Pull-in

Pull-in occurs when the saw chain on the bottom of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the saw chain pulls the chain saw forward and may cause the operator to lose control.

Pull-in frequently occurs when the bumper spike of the chain saw is not held securely against the tree or limb and when the saw chain is not rotating at full speed before it contacts the wood.

WARNING

Use extreme caution when cutting small size brush and saplings which may easily catch the saw chain, be whipped towards you or pull you off balance.

To avoid pull-in

1. Always start a cut with the saw chain rotating at full speed and the bumper spike in contact with the wood.

2. The risk of pull-in may also be reduced by using wedges to open the kerf or cut.

B = Pushback

Pushback occurs when the saw chain on the top of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the saw chain may drive the chain saw rapidly straight back toward the operator and may cause loss of chain saw control, which, in turn, may cause serious or fatal injury. Pushback frequently occurs when the top of the bar is used for cutting.

MSE 170 C, MSE 210 C

English

001BA033 KN

001BA051 LÄ

To avoid pushback

1. Be alert to forces or situations that may cause material to pinch the top of the saw chain.

2. Do not cut more than one log at a time.

3. Do not twist the chain saw when withdrawing the bar from a plunge cut or underbuck cut because the saw chain can pinch.

WARNING

For cutting larger trees, logs or branches, a more powerful, faster and/or steady cut may be necessary to reduce the risk of binding, stalling or a change in conditions during a longer cutting time that could lead to a loss of control of the object being cut and serious personal injury.

The electric chain saw is of only limited suitability for felling and limbing.

If, however, a tree is to be felled and limbed with a an electric chain saw, it is imperative to observe the following instructions.

Do not stand on a log while limbing it – you may slip or the log may roll.

Start limbing by leaving the lower limbs to support the log off the ground. When underbucking freely hanging limbs, a pinch may result or the limb may fall, causing loss of control. If a pinch occurs, switch off the motor, move front hand guard to ƒ, disconnect the plug from the power supply and remove the saw by lifting the limb.

WARNING

Be extremely cautious when cutting limbs or logs under tension (spring poles). The limbs or logs could spring back toward the operator and cause loss of control of the saw and severe or fatal injury to the operator.

Bucking

WARNING

When bucking, do not stand on the log. Make sure the log will not roll downhill. If on a slope, stand on the uphill side of the log. Watch out for rolling logs.

Cut only one log at a time. Shattered wood should be cut very

carefully. Sharp slivers of wood may be caught and flung in the direction of the operator of the saw.

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.

MSE 170 C, MSE 210 C

When cutting small logs, place log through "V"-shaped supports on top of a sawhorse. Never permit another person to hold the log. Never hold the log with your leg or foot.

Bucking is cutting a log into sections.

English

001BA151 KN

001BA152 KN

001BA088 LÄ

1 1

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 area before cutting. Pull out exposed and cleared logs first.

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, snow load, etc. To reduce the risk of severe or fatal injury to yourself or others, look for these conditions prior to beginning the cut, and be alert for a change in direction while the tree is falling.

WARNING

Always observe the general condition of the tree. Inexperienced users should never attempt to cut trees that are decayed or rotted inside or that are leaning or otherwise under tension. There is an increased risk that such trees could snap or split while being cut and cause serious or fatal injury to the operator or bystanders. Also look for broken or dead branches which could vibrate loose and fall on the operator. When felling on a slope, the operator should stand on the uphill side if possible.

Felling Instructions

When felling, maintain a distance of at least 2 1/2 tree lengths from the nearest person.

When felling in the vicinity of roads, railways and power lines, etc., take extra precautions. Inform the police, utility company or railway authority before beginning to cut.

WARNING

The noise of your engine may drown any warning call.

Felling

Felling is cutting down a tree. Before felling a tree, consider carefully

all conditions which may affect the direction of fall.

MSE 170 C, MSE 210 C

English

001BA040 KN

45°

001BA146 KN

001BA153 KN

001BA143 KN

Escape Path

First clear the tree base and work area from interfering limbs and brush and clean its lower portion with an ax.

Then, establish two paths of escape (B) and remove all obstacles. These paths should be generally opposite to the 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.

Buttress Roots

If the tree has large buttress roots, cut into the largest buttress vertically first (horizontally next) and remove the resulting piece.

Gunning Sight

When making the felling notch, use the gunning sight on the shroud and housing to check the desired direction of fall:

Position the saw so that the gunning sight points exactly in the direction you want the tree to fall.

Conventional Cut

Felling notch (C) – determines the direction of the fall

For a conventional cut: N Properly place felling notch

perpendicular to the line of fall, close to the ground.

N Cut down at approx. 45° angle to a

depth of about 1/5 to 1/4 of the trunk diameter.

N Make second cut horizontal. N Remove resulting 45° piece.

MSE 170 C, MSE 210 C

English

001BA150 KN

001BA144 KN

Open-face Technique

Felling notch (C) – determines the direction of the fall

For an open-face cut: N Properly place felling notch

perpendicular to the line of fall, close to the ground.

N Cut down at approx. 50° angle to a

depth of approx.1/5 to 1/4 of the trunk diameter.

N Make second cut from below at

approx. 40 degree angle.

N Remove resulting 90° piece.

Making Sapwood Cuts

N For medium sized or larger trees

make cuts at both sides of the trunk, at same height as subsequent felling cut.

N Cut to no more than width of guide

bar.

This is especially important in softwood in summer – it helps prevent sapwood splintering when the tree falls.

D =Felling Cut

Conventional and open-face technique: N Begin 1 to 2 inches (2,5 to 5 cm)

higher than center of felling notch.

N Cut horizontally towards the felling

notch.

N Leave approx.1/10 of diameter

uncut. This is the hinge.

N Do not cut through the hinge – you

could lose control of the direction of the fall.

Drive wedges into the felling cut where necessary to control the fall.

WARNING

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

MSE 170 C, MSE 210 C

English

001BA145 KN

001BA147 KN

001BA148 KN

E = Hinge

N Helps control the falling tree. N Do not cut through the hinge – you

could lose control of the direction of the fall.

Felling Cut for Small Diameter Trees: Simple Fan Cut

Engage the bumper spikes of the chain saw directly behind the location of the intended hinge and pivot the saw around this point only as far as the hinge. The bumper spike rolls against the trunk.

Felling Cut for Large Diameter Trees

WARNING

Felling a tree that has a diameter greater than the length of the guide bar requires use of either the sectioning felling cut or plunge-cut method. These methods are extremely dangerous because they involve the use of the nose of the guide bar and can result in kickback. Only properly trained professionals should 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.

MSE 170 C, MSE 210 C

English

Avoid repositioning the saw more than necessary. When repositioning for the next cut, keep the guide bar fully engaged in the kerf to keep the felling cut straight. If the saw begins to pinch, insert a wedge to open the cut. On the last cut, do not cut the hinge.

Plunge-cut Method Timber having a diameter more than

twice the length of the guide bar requires the use of the plunge-cut method before making the felling cut.

First, cut a large, wide felling notch. Make a plunge cut in the center of the notch.

The plunge cut is made with the guide bar nose. Begin the plunge cut by applying the lower portion of the guide bar nose to the tree at an angle. Cut until the depth of the kerf is about the same as the width of the guide bar. Next, align the saw in the direction in which the recess is to be cut.

With the saw at full throttle, insert the guide bar in the trunk.

Enlarge the plunge cut as shown in the illustration.

WARNING

There is an extreme danger of kickback at this point. Extra caution must be taken to maintain control of the saw. To make the felling cut, follow the sectioning method described previously.

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

WARNING

In order to reduce the risk of personal injury, never stand directly behind the tree when it is about to fall, since part of the trunk may split and come back towards the operator (barber-chairing), or the tree may jump backwards off the stump. Always keep to the side of the falling tree. When the tree starts to fall, withdraw the bar, shut off the engine and walk away on the preplanned escape path. Watch out for falling limbs.

WARNING

Be extremely careful with partially fallen trees which are poorly supported. When the tree hangs or for some other reason does not fall completely, set the saw aside and pull the tree down with a cable winch, block and tackle or tractor. If you try to cut it down with your saw, you may be injured.

MAINTENANCE, REPAIR AND STORING

Servicing of double-insulated appliance This electric chain saw is double-

insulated. In such an appliance, two systems of insulation are provided instead of grounding. No grounding means are provided, nor should means for grounding be added to the appliance. Servicing a double-insulated appliance requires extreme care and knowledge of the system, and should be done only by qualified service personnel.

MSE 170 C, MSE 210 C

English

WARNING

Replacement parts for double-insulated appliance must be identical to the parts they replace.

WARNING

Use only STIHL replacement parts for maintenance and repair. Use of parts manufactured by others may cause serious or fatal injury.

WARNING

Never operate a chain saw that is damaged, improperly adjusted or not completely or securely assembled. Follow the maintenance and repair instructions in the appropriate section of your instruction manual, especially those in the chapters "Mounting the Bar and Chain", "Maintaining and Sharpening" and "Chain Brake".

WARNING

Always stop the motor, disconnect the plug from the power supply and ensure that the chain is stopped before making any adjustments, maintenance or repair work, changing the saw chain or cleaning the saw. Do not attempt any maintenance or repair work not described in your instruction manual. Have such work performed at your STIHL service shop only.

Keep the chain, bar and sprocket clean; replace worn sprockets or chains. Keep the chain sharp. You can spot a dull chain when easy-to-cut wood becomes hard to cut and burn marks appear on

the wood. Keep the chain at proper tension. Tighten all nuts, bolts and screws before each use.

Only authorized personnel may replace the power supply cord. A damaged power supply cord must be replaced by an identical STIHL replacement part.

WARNING

In order for the chain brake on your STIHL chain saw to properly perform its function of reducing the risk of kickback and other injuries, it must be properly maintained. Like an automobile brake, a chain saw chain brake incurs wear each time it is engaged.

The amount of wear will vary depending upon usage, conditions under which the saw is used and other factors. Excessive wear will reduce the effectiveness of the chain brake and can render it inoperable.

For the proper and effective operation of the chain brake, the brake band and drum must be kept free of dirt, grease and other foreign matter which may reduce friction of the band on the drum.

For these reasons, each STIHL chain saw should be returned to trained personnel such as your STIHL servicing dealer for periodic inspection and servicing of the brake system according to the following schedule:

Heavy usage - every three months, Moderate usage - twice a year, Occasional usage - annually.

The chain saw should also be returned immediately for maintenance whenever the brake system cannot be thoroughly cleaned or there is a change in its operating characteristics.

Additionally, the daily maintenance schedule for your chain saw set forth in your instruction manual should be strictly followed.

Store chain saw in a dry place and away from children. It should have the scabbard mounted or be in a carrying case.

MSE 170 C, MSE 210 C

English

General Power Tool Safety Warnings

This chapter relays the prescribed wording of general safety advice for handheld motor-operated electric chain saws contained in UL 60745-1 and UL 60745-2-13.

The safety precautions and warnings on avoiding an electric shock given under "2) Electrical safety" do not apply to STIHL cordless electric power tools.

WARNING

Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

1) Work area safety

a) Keep work area clean and well lit.

Cluttered or dark areas invite accidents.

b) Do not operate power tools in

explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.

c) Keep children and bystanders away

while operating a power tool. Distractions can cause you to lose control.

2) Electrical safety

a) Power tool plugs must match the

outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.

b) Avoid body contact with earthed or

grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.

c) Do not expose power tools to rain or

wet conditions. Water entering a power tool will increase the risk of electric shock.

d) Do not abuse the cord. Never use

the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.

e) When operating a power tool

outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.

f) If operating a power tool in a damp

location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.

3) Personal safety

a) Stay alert, watch what you are doing

and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.

b) Use personal protective equipment.

Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.

c) Prevent unintentional starting.

Ensure the switch is in the offposition before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.

d) Remove any adjusting key or

wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.

e) Do not overreach. Keep proper

footing and balance at all times. This enables better control of the power tool in unexpected situations.

MSE 170 C, MSE 210 C

English

f) Dress properly. Do not wear loose

clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.

g) If devices are provided for the

connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.

4) Power tool use and care

a) Do not fo rce the pow er tool . Use th e

correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.

b) Do not use the power tool if the

switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

c) Disconnect the plug from the power

source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) Store idle power tools out of the

reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.

e) Maintain power tools. Check for

misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool's operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.

f) Keep cutting tools sharp and clean.

Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

g) Use the power tool, accessories

and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.

5) Service

a) Have your power tool serviced by a

qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

Chain saw safety warnings

– Keep all parts of the body away

from the saw chain when the chain saw is operating. Before you start the chain saw, make sure the saw chain is not contacting anything. A moment of inattention while operating chain saws may cause entanglement of your clothing or body with the saw chain.

– Always hold the chain saw with your

right hand on the rear handle and your left hand on the front handle. Holding the chain saw with a reversed hand configuration increases the risk of personal injury and should never be done.

– Hold the power tool by insulated

gripping surfaces only, because the saw chain may contact hidden wiring or its own cord. Saw chains contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.

– Wear safety glasses and hearing

protection. Further protective equipment for head, hands, legs and feet is recommended. Adequate protective clothing will reduce personal injury by flying debris or accidental contact with the saw chain.

– Do not operate a chain saw in a

tree. Operation of a chain saw while up in a tree may result in personal injury.

MSE 170 C, MSE 210 C

English

– Always keep proper footing and

operate the chain saw only when standing on fixed, secure and level surface. Slippery or unstable surfaces such as ladders may cause a loss of balance or control of the chain saw.

– When cutting a limb that is under

tension be alert for spring back. When the tension in the wood fibers is released the spring loaded limb may strike the operator and/or throw the chain saw out of control.

– Use extreme caution when cutting

brush and saplings. The slender material may catch the saw chain and be whipped toward you or pull you off balance.

– Carry the chain saw by the front

handle with the chain saw switched off and away from your body. When transporting or storing the chain saw always fit the guide bar cover. Proper handling of the chain saw will reduce the likelihood of accidental contact with the moving saw chain.

– Follow instructions for lubricating,

chain tensioning and changing accessories. Improperly tensioned or lubricated chain may either break or increase the chance for kickback.

– Keep handles dry, clean, and free

from oil and grease. Greasy, oily handles are slippery causing loss of control.

– Cut wood only. Do not use chain

saw for purposes not intended. For example: do not use chain saw for cutting plastic, masonry or nonwood building materials. Use of the chain saw for operations different than intended could result in a hazardous situation.

Causes and operator prevention of kickback

Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut.

Tip contact in some cases may cause a sudden reverse reaction, kicking the guide bar up and back towards the operator.

Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator.

Either of these reactions may cause you to lose control of the saw which could result in serious personal injury. Do not rely exclusively upon the safety devices built into your saw. As a chain saw user, you should take several steps to keep your cutting jobs free from accident or injury.

Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

– Maintain a firm grip, with thumbs

and fingers encircling the chain saw handles, with both hands on the saw and position your body and arm to allow you to resist kickback forces. Kickback forces can be controlled by the operator, if proper precautions are taken. Do not let go of the chain saw.

– Do not overreach and do not cut

above shoulder height. This helps prevent unintended tip contact and enables better control of the chain saw in unexpected situations.

– Only use replacement bars and

chains specified by the manufacturer. Incorrect replacement bars and chains may cause chain breakage and/or kickback.

– Follow the manufacturer's

sharpening and maintenance instructions for the saw chain. Decreasing the depth gauge height can lead to increased kickback.

MSE 170 C, MSE 210 C

English

001BA248 KN

001BA244 KN

Packing List Cutting Attachment

– Electric chain saw – Guide bar – Saw chain – Chain scabbard – Instruction manual – Combination wrench (not included

with models with quick chain tensioner)

A cutting attachment consists of the saw chain, guide bar and chain sprocket.

The cutting attachment that comes standard is designed to exactly match the chain saw.

– The pitch (t) of the saw chain (1),

chain sprocket and the nose sprocket of the Rollomatic guide bar must match.

– The drive link gauge (2) of the saw

chain (1) must match the groove width of the guide bar (3).

If non-matching components are used, the cutting attachment may be damaged beyond repair after a short period of operation.

Chain scabbard

Your saw comes standard with a chain scabbard that matches the cutting attachment.

If you use guide bars of different lengths on the saw, the length of the chain scabbard must be matched to the guide bar to reduce the risk of injury. It should cover the full length of the guide bar.

The length of the matching guide bars is marked on the side of the chain scabbard.

MSE 170 C, MSE 210 C

English

9931BA019 KN

9931BA025 KN

2310BA015 KN

2310BA016 KN

2310BA017 KN

9931BA015 KN

Mounting the Bar and Chain (quick chain tensioner)

WARNING

Do not connect the power tool to the wall outlet yet.

Removing the chain sprocket cover

N Pull the hinged handle (1) out until it

engages in the upright position.

N Turn the wingnut (2)

counterclockwise until it hangs loose in the sprocket cover (3).

N Remove the chain sprocket

cover (3).

N Take out the screw (2).

N Line up the tensioning gear (1) and

guide bar (3).

Disengage the chain brake.

N Pull the hand guard towards the

front handle until there is an audible click – the chain brake is disengaged.

Fitting the chain

WARNING

Wear work gloves to protect your hands from the sharp cutters.

Fitting the tensioning gear

turn it over.

N Remove the tensioning gear (1) and

N Insert the screw (2) and tighten it

down firmly.

MSE 170 C, MSE 210 C

N Fit the chain – start at the bar nose.

181BA012 KN

181BA013 KN

9931BA020 KN

9931BA021 KN

9931BA022 KN

Pay attention to the position of the tensioning gear and the cutting edges.

N Turn the tensioning gear (1)

clockwise as far as stop.

N Turn the guide bar so that the

tensioning gear is facing you.

N Make sure the drive link tangs

engage the bar groove (arrow) and then rotate the tensioning gear counterclockwise as far as stop.

N Place the chain sprocket cover in

position and engage the guide lugs in the recesses in the handle housing.

English

N If necessary, turn the adjusting

wheel (4) slightly until the sprocket cover can be pushed flush against the handle housing.

N Pull the hinged handle (5) out until it

engages in the upright position.

N Fit the wingnut and tighten it

moderately – finally tighten the wingnut by hand only after tensioning the saw chain.

N Go to chapter on "Tensioning the

Saw Chain"

N Fit the chain over the sprocket (2). N Push the guide bar over the bar

stud (3), the head of the rear bar stud must engage the slot.

MSE 170 C, MSE 210 C

When fitting the chain sprocket cover, check that the teeth of the tensioning gear and adjusting wheel mesh properly.

English

9931BA024 KN

9931BA012 KN

Tensioning the Saw Chain (quick chain tensioner)

Retensioning during cutting work: N Disconnect the plug from the wall

outlet.

N Pull out the hinged grip and loosen

the wingnut.

N Turn the adjusting wheel (1)

clockwise as far as stop.

N Tighten down the wingnut (2) firmly

by hand.

N Fold down the hinged grip. N Go to "Checking Chain Tension".

A new chain has to be retensioned more often than one that has been in use for some time.

N Check chain tension frequently –

see chapter on "Operating Instructions".

Checking Chain Tension

N Disconnect the plug from the wall

outlet.

N Wear work gloves to protect your

hands.

N Disengage the chain brake: Pull the

hand guard (1) against the front handle and hold it there – the chain brake and coasting brake are disengaged in this position.

N The chain must fit snugly against

the underside of the bar and it must still be possible to pull the chain along the bar by hand.

N If necessary, retension the chain. A new chain has to be retensioned more

often than one that has been in use for some time.

N Check chain tension frequently –

see chapter on "Operating Instructions".

Chain Lubricant

For automatic and reliable lubrication of the chain and guide bar – use only an environmentally compatible quality chain and bar lubricant. Rapidly biodegradable STIHL BioPlus is recommended.

NOTICE

Biological chain oil must be resistant to aging (e.g. STIHL BioPlus), since it will otherwise quickly turn to resin. This results in hard deposits that are difficult to remove, especially in the area of the chain drive and chain. It may even cause the oil pump to seize.

The service life of the chain and guide bar depends on the quality of the lubricant. It is therefore essential to use only a specially formulated chain lubricant.

WARNING

Do not use waste oil. Renewed contact with waste oil can cause skin cancer. Moreover, waste oil is environmentally harmful.

NOTICE

Waste oil does not have the necessary lubricating properties and is unsuitable for chain lubrication.

MSE 170 C, MSE 210 C

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Stihl MSE 210 C Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual