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Stihl Zaagmachine 032

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Chainsaw Safety Manual

STIH)

1Chainsaw Safety Manual

English / USA

Printed on chlorine-free paper.

Printing inks contain vegetable oils; paper can be recycled.

0 1 0457 84 3 21. . 4. . nted n AM11 E CP Pri i US

STIHl

Contents

Some Important Safety Precautions

for Chain Saw Users ........................ 2

Safety Precautions ........................... 4

Maintenance Chart ......................... 26

Main Parts of the Saw .................... 28

This manual contains the safety

precautions and recommended cutting

techniques outlined in STIHL chainsaw

Owner’s Manuals. Even if you are an

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

to operate the chainsaw.

!Warning!

Avoid contact of bar tip with any object.

This can cause the guide bar to kick

suddenly up and back, which may result

in serious or fatal injury. To reduce the

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.

English / USA

Chainsaw Safety Manual

A Summary of Warnings on

kickback and other Selected

Risks – Taken Primarily from

ANSI B 175.1 (See also “Safety

Precautions“ section of this

Owner’s Manual)

!Warning!

Kickback may occur when the nose or

tip of the guide bar touches an object, or

when the wood closes in and pinches

the saw chain in the cut. Tip contact in

some cases may cause a lightning fast

reverse reaction, kicking the guide bar

up and back towards the operator.

Pinching the saw chain along the top of

the guide bar may push the guide bar

rapidly back towards the operator. Either

of these reactions may cause you to lose

control of the saw which could result in

serious personal injury.

Section 5.11 of ANSI B 175.1-2000 sets

certain performance and design criteria

related to chainsaw kickback. STIHL has

developed a color code system using

green and yellow to help you select a

powerhead, bar and chain combination

that complies with the kickback

requirements of the ANSI Standard.

See the sections entitled "Safety

Precautions" and "Specifications" of this

manual.

Do not rely exclusively upon the safety

devices built into your saw. As a

chainsaw user, you should take several

steps to keep your cutting jobs free from

accident or injury.

1. With a basic understanding of

kickback, you can reduce or

eliminate the element of surprise.

Sudden surprise contributes to

accidents.

2. Keep a good firm grip on the saw

with both hands, the right hand on

the rear handle, and the left hand on

the front handle, when the engine is

running. Use a firm grip with thumbs

and fingers encircling the chainsaw

handles. A firm grip will help you

reduce kickback and maintain

control of the saw. Don't let go.

3. Make sure the area in which you are

cutting is free from obstructions. Do

not let the nose of the guide bar

contact a log, branch, or any other

obstruction that could be hit while

you are operating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut above

shoulder height.

6. Follow manufacturer's sharpening

and maintenance instructions for

the saw chain.

7. Only use replacement bars and

chains specified by the

manufacturer or the equivalent.

8. Reduced kickback bars and low

kickback chains are designed to

reduce the risk of kickback injury.

Ask your STIHL dealer about these

devices.

Other Safety Precautions

!Warning!

1. Do not operate a chainsaw with one

hand! Serious injury to the operator,

helpers, bystanders, or any

combination of these persons may

result from one-handed operation. A

chainsaw is intended to be used

with two hands.

2. Do not operate a chainsaw when

you are fatigued.

3. Use safety footwear; snug-fitting

clothing; protective gloves; and eye,

hearing, and head protection

devices.

Some Important Safety Precautions for Chain Saw Users

English / USA

Chainsaw Safety Manual

The use of any chainsaw

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. At full throttle,

the chain speed can reach 45 mph

(20 m/s). It is important that you read,

fully understand and observe the

following safety precautions and

warnings. Read the Owner's Manual

and the Safety Precautions periodically.

Pay special attention to the section on

reactive forces.

!Warning!

Reactive forces, including kickback, can

be dangerous. Careless or improper use

of any chainsaw may cause serious or

fatal injury.

All safety precautions that are generally

observed when working with an axe or a

hand saw also apply to the operation of

chainsaws. However, because a

chainsaw is a high-speed, fast-cutting

power tool, special safety precautions

must be observed to reduce the risk of

personal injury.

Have your STIHL dealer show you how

to operate your chainsaw. Observe all

applicable local safety regulations,

standards and ordinances.

!Warning!

Minors should never be allowed to use a

chainsaw. Bystanders, especially

children, and animals should not be

allowed in the area where a chainsaw is

in use. Never let the saw run

unattended. Store it in a locked place

away from children and empty the fuel

tank before storing for longer than a few

days.

Do not lend or rent your

chainsaw without the

Owner`s Manual. Be sure

that anyone using your

saw reads and

understands the

information contained in this manual.

These safety precautions and warnings

apply to the use of all STIHL chainsaws.

Different models may have different

parts and controls. See the appropriate

section of your Owner's Manual for a

description of the controls and function

of the parts of your model saw.

Safe use of a chainsaw involves

1. the operator

2. the saw

3. the use of the saw.

THE OPERATOR

Physical Condition

You must be in good physical condition

and mental health and not under the

influence of any substance (drugs,

alcohol) which might impair vision,

dexterity or judgement.

Do not operate a chainsaw when you

are fatigued. Be alert - If you get tired

while operating your chainsaw, take a

break. Tiredness may result in loss of

control. Working with any chainsaw can

be strenuous. If you have any condition

that might be aggravated by strenuous

work, check with your doctor before

operating a chainsaw.

!Warning!

Prolonged use of chainsaws (or other

machines) exposing the operator to

vibrations may produce whitefinger

disease (Raynaud's phenomenon) or

carpal tunnel syndrome.

Safety Precautions

5Chainsaw Safety Manual

English / USA

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:

– Many STIHL models are available

with an anti-vibration (AV) system

designed to reduce the

transmission of vibrations created

by the engine and cutting

attachment to the operator's hands.

An AV system is recommended for

those persons using chainsaws on

a regular or sustained basis.

– Wear gloves and keep your hands

warm. Heated handles, which are

available on most STIHL power-

heads, are recommended for cold

weather use.

– Keep the saw chain sharp and the

saw, including the AV system, well

maintained. A dull chain will in-

crease cutting time, and pressing a

dull chain through wood will in-

crease the vibrations transmitted to

your hands. A saw with loose

components or with damaged or

worn AV buffers will also tend to

have higher vibration levels.

– Maintain a firm grip at all times, but

do not squeeze the handles with

constant, excessive pressures.

Take frequent breaks.

All the above mentioned precautions do

not guarantee that you will not sustain

whitefinger disease or carpal tunnel

syndrome. Therefore, continual and

regular users should monitor closely the

condition of their hands and fingers. If

any of the above symptoms appear,

seek medical advice immediately.

!Warning!

The ignition system of your unit

produces an electromagnetic field of a

very low intensity. This field may inter-

fere with some pacemakers. To reduce

the risk of serious or fatal injury, persons

with pacemaker should consult their

physician and the pacemaker manu-

facturer before operating this tool.

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. Avoid loose-

fitting jackets, scarfs,

neckties, jewelry, flared or

cuffed pants, unconfined long hair or

anything that could become entangled

with the saw or brush. Wear overalls or

jeans with a reinforced cut retardant

insert or cut retardant chaps.

Protect your hands with

gloves when handling

saw and saw chain.

Heavy-duty, nonslip

gloves improve your grip

and protect your hands.

Good footing is most

important in chainsaw

work. Wear sturdy boots

with nonslip soles. Steel-

toed safety boots are

recommended.

Never operate a chainsaw unless

wearing goggles or properly fitted safety

glasses with adequate top and side

protection complying with your national

standard.

English / USA

Chainsaw Safety Manual

Wear an approved safety

hard hat to protect your

head. Chainsaw noise

may damage your

hearing. Always wear

sound barriers (ear plugs

or ear mufflers) to protect your hearing.

Continual and regular users should have

their hearing checked regularly.

THE SAW

Parts of the chainsaw; for illustrations

and definitions of the parts see the

chapter on "Main Parts of Saw".

!Warning!

Never modify a chainsaw in any way.

Only attachments and parts supplied by

STIHL or expressly approved by STIHL

for use with the specific STIHL saw

models are authorized. Although certain

unauthorized attachments are usable

with the STIHL powerhead, their use

may, in fact, be extremely dangerous.

THE USE OF THE SAW

Transporting the chainsaw

!Warning!

Always stop the engine before putting a

chainsaw down or carrying it. Carrying a

chainsaw with the engine running is

extremely dangerous.

Accidental acceleration of the engine

can cause the chain to rotate. During

operation, the powerhead muffler and

the material around it reach extremely

high temperatures. Avoid touching the

hot muffler, you could receive serious

burns.

By hand: When carrying your saw by

hand, the engine must be stopped and

the saw must be in the proper position.

Grip the front handle and place the

muffler away from the body.

The chain guard (scabbard) should be

over the chain and the guide bar, which

should point backwards. When carrying

your saw, the bar should be behind you.

By vehicle: When transporting in a

vehicle, keep chain and bar covered with

the chain guard. Properly secure your

saw to prevent turnover, fuel spillage

and damage to the saw or vehicle.

Preparation for the use of the saw

Take off the chain guard and inspect for

safety in operation. For assembly, follow

the procedure described in the chapter

"Mounting the Bar and Chain" of your

Owner's Manual.

STIHL Oilomatic chain, guide bar and

sprocket must match each other in

gauge and pitch.

Before replacing any bar and chain, see

the sections on "Specifications",

"Kickback" and the "ANSI B 175.1-2000

chainsaw kickback standard" in this

manual.

001BA115 KN

7Chainsaw Safety Manual

English / USA

!Warning!

Proper tension of the chain is extremely

important. In order to avoid improper

setting, the tensioning procedure must

be followed as described in your

manual. Always make sure the

hexagonal nut(s) for the sprocket cover

is (are) tightened securely after

tensioning the chain. Never start the saw

with the sprocket cover loose. Check

chain tension once more after having

tightened the nut(s) and thereafter at

regular intervals (whenever the saw is

shut off). If the chain becomes loose

while cutting, shut off the engine and

then tighten. Never try to adjust the

chain while the engine is running!

Fueling

Your STIHL chainsaw uses an oil-gaso-

line mixture for fuel (see chapter "Fuel"

of your Owner's Manual).

!Warning!

Gasoline is an extremely flammable fuel.

If spilled or ignited by a spark or other

ignition source, it can cause fire and

serious burn injury or property damage.

Use extreme caution when handling

gasoline or fuel mix.

Do not smoke or bring any

fire or flame near the fuel

or the chainsaw. Note that

combustible fuel vapors

may be vented from the

fuel system.

Fueling Instructions

!Warning!

Fuel your chainsaw in well-ventilated

areas, outdoors only. Always shut off the

engine and allow it to cool before

refueling. Gasoline vapor pressure may

build up inside the gas tank depending

on the fuel used, the weather conditions,

and the venting system of the tank. In

order to reduce the risk of burns or other

personal injury from escaping gas vapor

and fumes, remove the fuel filler cap on

the STIHL product carefully so as to

allow any pressure build-up in the tank

to release slowly. Never remove fuel

filler cap while engine is running.

Select bare ground for fueling and move

at least 10 feet (3 m) from fueling spot

before starting the engine. Wipe off any

spilled fuel before starting your saw, and

check for leakage.

!Warning!

Check for fuel leakage while refueling

and during operation. If fuel or oil

leakage is found, do not start or run the

engine until leak is fixed and spilled fuel

has been wiped away. Take care not to

get fuel on your clothing. If this happens,

change your clothing immediately.

Different models may have different fuel

caps.

Cap with Grip

!Warning!

In order to reduce the risk of fuel spillage

and fire from an improperly tightened

fuel cap, correctly position and tighten

the fuel cap in the fuel tank opening.

To do this with this STIHL

cap, raise the grip on the

top of the cap until it is

upright at a 90° angle.

Insert the cap in the fuel

tank opening with the

triangular marks on the grip of the cap

and on the fuel tank opening lining up.

Using the grip, turn the cap firmly

clockwise as far as it will go (approx. a

quarter turn).

English / USA

Chainsaw Safety Manual

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

tightened and you must repeat the

above steps.

Slotted Cap

!Warning!

Unit vibrations can cause an improperly

tightened fuel filler cap to loosen or

come off and spill quantities of fuel. In

order to reduce the risk of fuel spillage

and fire, tighten fuel filler cap by hand

with as much force as possible.

The screwdriver end of

the STIHL combination

wrench or other similar

tool can be used as an aid

in tightening slotted fuel

filler caps.

See "Fueling" chapter in your Owner's

Manual.

Starting

The chain brake must be engaged when

starting the saw.

!Warning!

Your chainsaw is a one-person saw. Do

not allow other persons to be near the

running chainsaw. Start and operate

your saw without assistance. For

specific starting instructions, see the

appropriate section of the Owner's

Manual. Proper starting methods reduce

the risk of injury. Do not drop start. This

method is very dangerous because you

may lose control of the saw.

There are two recommended methods

for starting your chainsaw.

With the first recommended method,

the chainsaw is started on the ground.

Make sure the chain brake is engaged

(see "Chain Brake" chapter in your

Owner's Manual) and place the

chainsaw on firm ground or other solid

surface in an open area. Maintain good

balance and secure footing.

Grip the front handlebar of the saw firmly

with your left hand and press down. For

saws with a rear handle level with the

ground, put the toe of your right foot into

the rear handle and press down. With

your right hand pull out the starter grip

slowly until you feel a definite resistance

and then give it a brisk, strong pull.

The second recommended method for

starting your chainsaw allows you to

start the saw without placing it on the

ground. Make sure the chain brake is

engaged, grip the front handle of the

chainsaw firmly with your left hand.

Keep your arm on the front handle in a

locked (straight) position. Hold the rear

handle of the saw tightly between your

legs just above the knees. Maintain

good balance and secure footing. Pull

the starting grip slowly with your right

hand until you feel a definite resistance

and then give it a brisk, strong pull.

001BA113 KN

001BA114 KN

English / USA

Chainsaw Safety Manual

!Warning!

To reduce the risk of fire or burn injury,

keep the area around the muffler clean.

Remove all debris such as pine needles,

branches or leaves.

!Warning!

An improperly mounted or damaged

cylinder housing or a damaged/

deformed muffler shell may interfere

with the cooling effect of the catalytic

converter. To reduce the risk of fire or

burn injury, do not continue work with a

damaged or improperly mounted

cylinder housing or a damaged/

deformed muffler shell. Your catalytic

converter is furnished with screens

designed to reduce the risk of fire from

the emission of hot particles. Due to the

heat from the catalytic reaction, these

screens will normally stay clean and

need no service or maintenance. If you

experience loss of performance and you

suspect a clogged screen, have your

muffler maintained by a STIHL Servicing

Dealer.

Working Conditions

Operate the chainsaw under good

visibility and daylight conditions only.

!Warning!

Your chainsaw produces

poisonous exhaust fumes

as soon as the

combustible engine is

running. These gases

(e.g. carbon monoxide)

may be colorless and odorless. To

reduce the risk of serious or fatal injury

from breathing toxic fumes, never run

the chainsaw indoors or in poorly

ventilated locations. Ensure proper

ventilation when working in trenches or

other confined areas.

!Warning!

Use of this product (including sharpen-

ing the saw chain) can generate dust,

mists and fumes containing chemicals

known to cause respiratory disease,

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. Control

dust (such as sawdust), mists (such as

oil mist from chain lubrication) and

fumes at the source where possible.

In this regard use good work practices

and follow the recommendations of

OSHA / NIOSH and occupational and

trade associations. When the inhalation

of toxic dust, mists and fumes cannot be

eliminated, the operator and any

bystanders should always wear a

respirator approved by NIOSH / MSHA

for the type substance at issue.

!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 cut or disturb asbestos,

asbestos containing products (e.g.

asbestos containing drywall or other

construction products), or products such

as pipes which are wrapped or covered

with asbestos insulation. If you have any

reason to believe that you might be

cutting asbestos, immediately contact

your employer or a local OSHA

representative.

11Chainsaw Safety Manual

English / USA

The muffler and other parts of the engine

(e.g. fins of the cylinder, spark plug)

become hot during operation and remain

hot for a while after stopping the engine.

To reduce risk of burns do not touch the

muffler and other parts while they are

hot. Don't work alone. Keep within

calling distance of others in case help is

needed.

Your chainsaw is equipped with a chain

catcher. It is designed to reduce the risk

of personal injury in the event of a

thrown or broken chain. From time to

time the catcher may be damaged or

removed.

To reduce the risk of personal injury, do

not operate a chainsaw with a damaged

or missing catcher.

Inspect buffers periodically. Replace

damaged, broken or excessively worn

buffers immediately, since they may

result in loss of control of the saw.

A "sponginess" in the feel of the saw,

increased vibration or increased

"bottoming" during normal operation

may indicate damage, breakage or

excessive wear. Buffers should always

be replaced in sets. If you have any

questions as to whether the buffers

should be replaced, consult your STIHL

servicing dealer.

!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 heavy.

!Warning!

Avoid stumbling on obstacles such as

stumps, roots or rocks and watch out for

holes or ditches. Clear the area where

you are working. Be extremely cautious

when working on slopes or uneven

ground. There is increased danger of

slipping on freshly debarked logs.

!Warning!

To reduce the risk

of serious or fatal

injury to the

operator or

bystanders, never

use the saw with one hand.

You cannot control reactive forces and

you may lose control of the saw, which

can result in the skating or bouncing of

the bar and chain along the limb or log.

Even for those compact saws designed

for use in confined spaces, one-handed

operation is dangerous because the

operator may lose control.

Cutting Instructions

Grip: Always hold the saw firmly with

both hands when the engine is running.

Place your left hand on front handle bar

and your right hand on rear handle and

throttle trigger. Left-handers should

follow these instructions too.

Wrap your fingers tightly around the

handles, keeping the handles cradled

between your thumb and forefinger. With

your hands in this position, you can best

oppose and absorb the push, pull and

kickback forces of your saw without

losing control (see section on reactive

forces). Make sure your chainsaw

handles and grip are in good condition

and free of moisture, pitch, oil or grease.

!Warning!

Do not operate your chainsaw with the

starting throttle lock engaged. Cutting

with the starting throttle lock engaged

does not permit the operator proper

control of the saw or chain speed.

001BA087 LÄ

13Chainsaw Safety Manual

English / USA

the powerful force used to cut wood can

be reversed (and work against the

operator). If the rotating chain is

suddenly stopped by contact with any

solid object like a log or branch or is

pinched, there active forces may occur

instantly. These reactive forces may

result in loss of control which may, in

turn, cause serious or fatal injury. An

understanding of the causes of these

reactive forces may help you avoid loss

of control.

The most common reactive forces are

– kickback,

– pushback,

– pull-in.

Kickback:

Kickback may occur when

the moving saw chain

near the upper quadrant

of the bar nose contacts a

solid object or is pinched.

The reaction of the cutting force of the

chain causes a rotational force on the

chainsaw in the direction opposite to the

chain movement. This may fling the bar

up and back in an uncontrolled arc

mainly in the plane of the bar. Under

some cutting circumstances the bar

moves towards the operator, who may

suffer severe or fatal injury.

Kickback may occur, for example,

when the 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 saw. Many

factors influence the occurrence and

force of the kickback reaction. These

include chain speed, the speed at which

the bar and chain contact the object, the

angle of contact, the condition of the

chain and other factors.

The type of bar and saw chain you use

is an important factor in the occurrence

and force of the kickback reaction. Some

STIHL bar and chain types are designed

to reduce kickback forces. STIHL

recommends the use of reduced

kickback bars and low kickback chains.

ANSI B 175.1-2000 chainsaw

kickback standard

Section 5.11 of ANSI standard

B 175.1-2000, sets certain performance

and design criteria related to chainsaw

kickback.

To comply with section 5.11 of ANSI

B 175.1-2000:

001BA093 LÄ

001BA035 KN

Chainsaw Safety Manual14

English / USA

a) saws with a displacement of less

than 3.8 cubic inches (62 cm³).

– must, in their original condition,

meet a 45° computer derived

kickback angle when equipped with

certain cutting attachments.

– and must be equipped with at least

two devices to reduce the risk of

kickback injury, such as a chain

brake, low kickback chain, reduced

kickback bar, etc.

b) saws with a displacement of

3.8 cubic inches (62 cm³) and above

– must be equipped with at least one

device designed to reduce the risk

of kickback injury such as a chain

brake, low kickback chain, reduced

kickback bar, etc.

The computer derived angles for saws

below 3.8 cubic inch (62 cm³)

displacement are measured by applying

a computer program to test results from

a kickback test machine.

!Warning!

The computer derived angles of § 5.11

of ANSI B 175.1-2000 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 § 5.11 of ANSI B 175.1-

2000 does not automatic-ally mean that

in a real life kickback the bar and chain

will rotate at most 45°.

!Warning!

In order for powerheads below 3.8 cubic

inch (62 cm³) displacement to comply

with the computed kickback angle

requirements of § 5.11 of ANSI B 175.1-

2000 use only the following cutting

attachments:

– bar and chain combinations listed

as complying in the "Specifications"

section of the Owner's Manual or

– other replacement bar and chain

combinations marked in

accordance with the standard for

use on the powerhead or

– replacement chain designated

"low kickback saw chain''.

See the section on "Low kickback saw

chain and reduced kickback bars"

Devices for reducing the risk of

kickback injury

STIHL recommends the use of the

STIHL Quickstop chain brake on your

power-head with green labeled reduced

kickback bars and low kickback chains.

!Warning!

To reduce the risk of injury, stop using

the saw immediately if the chain brake

does not function properly. Take the saw

to your local STIHL Service Center! Do

not use the saw until the problem has

been rectified (see the section "Chain

Brake").

Quickstop chain brake

STIHL has developed a chain stopping

system designed to reduce the risk of

injury in certain kickback situations. It is

called a Quickstop chain brake. The

Quickstop is available as standard

equipment on your STIHL chainsaw and

is available for installation on most older

STIHL saws. Ask your dealer to retrofit

your older model saw with a chain brake.

Chainsaw Safety Manual16

English / USA

reduce the risk of kickback injury. Other

chains are designed to obtain higher

cutting efficiency or sharpening ease but

may result in higher kickback tendency.

STIHL has developed a color

codesystem to help you identify the

STIHL reduced kickback bars and low

kickback chains. Cutting attachments

with green warning decals or green

labels on the packaging are designed to

reduce the risk of kickback injury. The

matching of green decaled powerheads

under 3.8 cubic inch (62 cm³)

displacement with green labeled bars

and green labeled chains gives

compliance with the computed kickback

angle requirements of ANSI

B 175.1-2000 when the products are in

their original condition. Products with

yellow decals or labels are for users with

extraordinary cutting needs and

experience and specialized training for

dealing with kickback.

STIHL recommends the use of its

green labeled reduced kickback bars,

green labeled low kickback chains

and a STIHL Quickstop chain brake

for both experienced and

inexperienced chainsaw users.

Please ask your STIHL dealer to

properly match your powerhead with the

appropriate bar/chain combinations to

reduce the risk of kickback injury. Green

labeled bars and chains are

recommended for all powerheads. See

your "STIHL Bar and Chain Information"

leaflet for details.

!Warning!

Use of other, non-listed bar/chain

combinations may increase kickback

forces and increase the risk of kickback

injury. New bar/chain combinations may

be developed after publication of this

literature, which will, in combination with

certain powerheads, comply with

§ 5.11 of ANSI B 175.1-2000. Check

with your STIHL dealer for such

combinations.

!Warning!

Reduced kickback bars and low

kickback 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 chain, this does not

eliminate the risk of injury by kickback.

Therefore, always observe all safety

precautions to avoid kickback situations.

Low kickback chain

Some types of saw chain have specially

designed components to reduce the

force of nose contact kickback. STIHL

has developed low kickback chain for

your powerhead.

"Low kickback saw chain" is a chain

which has met the kickback

performance requirements of § 5.11.2.4

of ANSI B 175.1-2000 (Safety

Requirements for Gasoline-Powered

ChainSaws) when tested in its original

condition on a selected representative

sample of chainsaws below 3.8 cubic

inch (62 cm³) displacement specified in

ANSI B 175.1-2000.

!Warning!

There are potential powerhead and bar

combinations with which low kickback

saw chains can be used which have not

been specifically certified to comply with

the 45° computer derived kickback

angle of § 5.11 of ANSI B 175.1-2000.

Some low kickback chains have not

been tested with all powerhead and bar

combinations.

!Warning!

A dull or improperly sharpened chain

may reduce or negate the effects of the

design features intended to reduce

17Chainsaw Safety Manual

English / USA

kickback energy. Improper lowering or

sharpening of the depth gauges or

shaping of the cutters may increase the

chance and the potential energy of a

kickback. Always cut with a properly

sharpened chain.

Reduced kickback bar

STIHL green labeled reduced kickback

bars are designed to reduce the risk of

kickback injury when used with STIHL

green labeled low kickback chains.

!Warning!

When used with other, more aggressive

chains, these bars may be less effective

in reducing kickback, and may result in

higher kickback forces.

Bow Guides

!Warning!

Do not mount a bow guide on any STIHL

chainsaw. Any chainsaw equipped with

a bowguide is potentially very

dangerous. The risk of kickback is

increased with a bow guide because of

the increased kickback contact area.

Low kickback chain will not significantly

reduce the risk of kickback injury when

used on a bow guide.

To avoid kickback

The best protection from personal injury

that may result from kickback is to avoid

kickback situations:

1. Hold the chainsaw firmly with both

hands and maintain a secure grip.

2. Be aware of the location of the guide

bar nose at all times.

3. Never let the nose of the guide bar

contact any object. Do not cut limbs

with the nose of the guide bar. Be

especially careful when cutting

small, tough limbs, small size brush

and saplings which may easily catch

the chain.

4 Don't overreach.

5. Don't cut above shoulder height.

6. Begin cutting and continue at full

throttle.

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 chain.

11. Maintain saw chain properly. Cut

with a correctly sharpened, properly

tensioned chain at all times.

12. Stand to the side of the cutting path

of the chainsaw.

A = Pull-in:

Pull-in occurs when the chain on the

bottom of the bar is suddenly stopped

when it is pinched, caught or encounters

a foreign object in the wood. The

reaction of the chain pulls the saw

forward and may cause the operator to

lose control.

Pull-in frequently occurs when the

bumper spike of the saw is not held

securely against the tree or limb and

when the chain is not rotating at full

speed before it contacts the wood.

!Warning!

Use extreme caution when cutting small

size brush and saplings which may

easily catch the chain and pull you off

balance.

To avoid pull-in

1. Always start a cut with the chain

rotating at full speed and the

bumper spike in contact with the

wood.

2. Pull-in may also be prevented by

using wedges to open the kerf or

cut.

001BA037 KN

19Chainsaw Safety Manual

English / USA

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 required direction of fall:

:Position the saw so that the gunning

sight points exactly in the direction

you want the tree to fall.

001BA040 KN

45°

001BA041 KN

001BA019 KN

English / USA

Chainsaw Safety Manual

Conventional cut

A = felling notch - determines the

direction of the fall

For a conventional cut:

:Properly place felling notch

perpendicular to the line of fall,

close to the ground

:Cut down at app. 45-degree angle

to a depth of about 1/5 to 1/4 of the

trunk diameter

:Make second cut horizontal

:Remove resulting 45-degree piece

Open-face technique

A = felling notch - determines the

direction of the fall

For an open-face cut:

:Properly place felling notch

perpendicular to the line of fall,

close to the ground

:Cut down at app. 50-degree angle

to a depth of app.1/5 to 1/4 of the

trunk diameter

:Make second cut from below at app.

40 degree angle

:Remove resulting 90-degree piece

Making sapwood cuts

:For medium sized or larger trees

make cuts at both sides of the trunk,

:at same height as subsequent

felling cut.

: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.

001BA052 KN

001BA042 LÄ

001BA043 KN

21Chainsaw Safety Manual

English / USA

B = Felling cut

Conventional and open-face technique:

:Begin 1 to 2 inches (2,5 to 5 cm)

higher than centre of felling notch

:Cut horizontally towards the felling

notch

:Leave approx.1/10 of diameter

uncut. This is the hinge

: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.

C = Hinge

:Helps control the falling tree

:Do not cut through the hinge -you

could lose control of the direction of

the fall

!Warning!

In order to reduce the risk of personal

injury, never stand directly behind the

tree when it is about to fall, since part of

the trunk may split and come back

towards the operator (barber-chairing),

or the tree may jump backwards off the

stump. Always keep to the side of the

falling tree. When the tree starts to fall,

withdraw the bar, shut off the engine and

walk away on the preplanned escape

path. Watch out for falling limbs.

!Warning!

Be extremely careful with partially fallen

trees which are poorly supported. When

the tree hangs or for some other reason

does not fall completely, set the saw

aside and pull the tree down with a cable

winch, block and tackle or tractor. If you

try to cut it down with your saw, you may

be injured.

Felling cut for small diameter trees:

simple fan cut

Engage the bumper spikes of the

chainsaw 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.

001BA044 KN

001BA045 KN

001BA046 KN

Product specificaties

Merk:	Stihl
Categorie:	Zaagmachine
Model:	032

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