Read Instruction Manual thoroughly before use and
follow all safety precautions – improper use can cause
serious or fatal injury.
ADVERTENCIA
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.
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.
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
1
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English
Contents
17.3 Maintaining the Chain Brake
18 Inserting and Removing the Battery
Thank you for your purchase. The information contained in
this manual will help you receive maximum performance and
satisfaction from your STIHL chain saw and, if followed,
reduce the risk of injury from its use.
This lightweight, top-handle chain saw is designed
specifically for in-tree operation by arborists and other tree
care professionals. For cutting work at ground level, use a
traditional rear-handle chain saw with a wider handle
configuration for greater control.
SAVE THIS MANUAL!
Because a chain saw is a high-speed woodcutting tool, special safety precautions must be
observed to reduce the risk of personal injury.
Read this instruction manual thoroughly before
use and periodically thereafter. Follow all safety
precautions. Careless or improper use of the
chain saw can cause serious or fatal injury.
This top-handle chain saw is designed
for professional, in-tree use only.
Operators must be trained in special intree cutting and working techniques
and properly secured at all times (for
example, in a lift bucket or secured
properly with ropes and a safety
harness).
WARNING
Operating this chain saw in a tree requires special working
techniques, which must be observed to reduce the risk of
personal injury. Never work in a tree unless you have
received specific, professional training for such work,
including training in the use of the safety equipment and
other climbing equipment, such as harnesses, ropes, belts,
climbing irons, snap hooks, carabiners, etc.
Observe all applicable federal, state and local safety
regulations, standards and ordinances.
Do not lend or rent your chain saw without this instruction
manual. Allow only persons who have the proper training
and fully understand the information in this manual to
operate the chain saw.
For further information, or if you do not understand any of
the instructions in this manual, please go to
www.stihlusa.com or contact your authorized STIHL
servicing dealer.
2Guide to Using this Manual
2.1Signal Words
This manual contains safety information that requires your
special attention. Such information is introduced with the
following symbols and signal words:
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
NOTICE
Indicates a risk of property damage, including damage to the
machine or its individual components.
2.2Symbols in Text
The following symbol is included to assist you with the use
of the manual:
Refers to a designated chapter or sub-chapter in this
instruction manual.
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3 Main Parts
3Main Parts
3.1Chain Saw and Battery
#
7
8
1
2
10
9
11
4
15
16
24
23
22
21
1 Chain Sprocket
Drives the saw chain.
2 Tensioning Gear
Shifts the guide bar and tensions or loosens the saw
chain.
3Bumper Spike
Helps hold the saw steady against the wood during
cutting.
4 Chain Catcher
Helps contain the saw chain and reduce the risk of
operator contact in the event the chain breaks or comes
off the bar.
3
5
6
25
17
18
19
20
#
27
12
13
14
26
5 Guide Bar
Supports and guides the saw chain.
6Saw Chain
Toothed cutting tool consisting of cutters, tie straps and
drive links.
7 Gunning Sight
Helps the operator determine the direction of fall when
making a felling notch.
8 Chain Sprocket Cover
Covers the chain sprocket.
9Nut
Tightens the chain sprocket cover.
10 Chain Scabbard
Covers the guide bar and saw chain to reduce the risk of
injury from inadvertent contact during transportation and
storage.
11 Front Hand Guard
Helps protect the operator's left hand from projecting
branches and contact with the saw chain. Serves as the
activation lever for the chain brake.
12 Retaining Button
For switching the chain saw on.
13 "CHAIN BRAKE" LED
0000098211_001
Indicates that the chain brake is engaged when
illuminated.
14 "STATUS" LED
Indicates the operational status of the chain saw. When
the LED is flashing it indicates that the saw is in standby
mode and ready for use.
15 Trigger Switch Lockout
Must be depressed to allow activation of the trigger
switch.
16 Control Handle
Handle for the operator's right hand.
17 Locking Lever
Secures the battery in the battery compartment.
4
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4 Safety Symbols on the Products
1
0000098212_001
18 Battery Compartment
Holds the battery.
19 Air Filter
Filters the air drawn into the motor.
20 Ring
For carrying the chain saw on your belt or by a rope.
21 Oil Flow Adjusting Screw
For adjusting the amount of chain oil.
22 Oil Filler Cap
For closing the oil tank.
23 Front Handle
Handle for the operator's left hand.
24 Trigger Switch
Switches the motor on and off.
25 Battery
Supplies electrical power to the motor.
26 Push Button
Activates the battery's LEDs.
27 Battery LEDs
Indicate the battery's state of charge and display error
messages regarding potential malfunctions in the battery
or power tool.
English
1 "CHAIN OIL" LED
Indicates that the oil tank is empty or the bar and chain
are not receiving oil when illuminated.
4Safety Symbols on the Products
4.1Chain Saw
The following safety symbols are found on the chain saw:
To reduce the risk of injury, follow the specified
safety precautions.
# Rating Plate
Contains electrical information and the product's serial
number.
3.2Optional Features
Optional features are not available on all models.The chain
saw may be equipped with the following features:
0458-007-8621-A
Read and follow all safety precautions in the
instruction manual. Improper use can lead to
serious or fatal personal injury or property
damage.
To reduce the risk of serious personal injury and
hearing loss, always wear proper eye protection,
hearing protection and an approved protective
helmet, @ 6.3.
To reduce the risk of injuries, wear the type of
overalls, long pants or chaps that contain pads of
cut-retardant material, if feasible depending on
the individual application, @ 6.3.
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5 General Power Tool Safety Warnings
To reduce the risk of serious or fatal
injuries to the operator or bystanders
from loss of control, always hold the
chain saw firmly with both hands when
you are working, @ 6.5.2.
Avoid contact of the bar tip with any object. This
can cause the bar to kick suddenly up and back,
which may result in serious or fatal injury. Always
use two hands to operate the saw, @ 7.
To reduce the risk of injury or property damage
from unintended activation, remove the battery
any time the saw is not in use, @ 6.5.
Designed for professional, in-tree use
only. Operators must be trained in
special in-tree cutting and working
techniques and properly secured at all
times, @ 8.1.
4.2Battery
The following safety symbols are found on the AR series
backpack battery and the AP series battery:
To reduce the risk of injury, follow the specified
safety precautions.
To reduce the risk of personal injury or property
damage from fire, use and store only within an
ambient temperature range of 14 °F to
122 °F (- 10 °C to 50 °C), @ 9.
AR 900, 1000, 2000, 3000 Backpack Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Protect from rain, water, liquids and
damp conditions. Never immerse in water or
other liquids, @ 9.
AR L Backpack Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Never immerse in water or other
liquids, @ 9.
AP Series Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Never immerse in water or other
liquids, @ 9.
Batteries sold separately.
5General Power Tool Safety Warnings
Read and follow all safety precautions in the
battery's instruction manual and the manual for
the STIHL tool powered by this battery. Improper
use can lead to serious or fatal personal injury or
property damage.
To reduce the risk of personal injury or property
damage from fire, explosion or burns, including
chemical burns, do not disassemble, crush,
drop, damage or heat above 212 °F (100 °C).
Never expose to fire or incinerate, @ 9.
6
5.1Introduction
This chapter contains the prescribed general safety
warnings and instructions for handheld, motor-operated
electric power tools and motor-operated electric chain saws.
Additional important warnings and instructions are provided
in subsequent chapters of this manual.
WARNING
■ Read all safety warnings, instructions, illustrations and
specifications provided with this power tool. Failure to
follow all instructions listed below may result in electric
shock, fire and/or serious injury.
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5 General Power Tool Safety Warnings
English
■ Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless)
power tool.
5.2Work 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.
5.3Electrical 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 the 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) or
ground fault circuit interruptor (GFCI) protected supply.
Use of an RCD or GFCI reduces the risk of electric shock.
5.4Personal 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, nonskid 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
off-position 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.
f) Dress properly. Do not wear loose clothing or jewellery.
Keep your hair and clothing away from moving parts.
Loose clothes, jewellery 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.
h)Do not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool safety
principles. A careless action can cause severe injury
within a fraction of a second.
0458-007-8621-A
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5 General Power Tool Safety Warnings
5.5Power Tool Use and Care
a)Do not force the power tool. Use the corre ct 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 remove
the battery pack, if detachable, 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 and accessories. 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.
h)Keep handles and grasping surfaces dry, clean and free
from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
5.6Battery Tool Use and Care
a)Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type of
battery pack may create a risk of fire when used with
another battery pack.
b)Use power tools only with specifically designated battery
packs. Use of any other battery packs may create a risk of
injury and fire.
c) When battery pack is not in use, keep it away from other
metal objects, like paper clips, coins, keys, nails, screws
or other small metal objects that can make a connection
from one terminal to another. Shorting the battery
terminals together may cause burns or a fire.
d)Under abusive conditions, liquid may be ejected from the
battery; avoid contact. If contact accidentally occurs, flush
with water. If liquid contacts eyes, additionally seek
medical help. Liquid ejected from the battery may cause
irritation or burns.
e)Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire/explosion or risk
of injury.
f) Do not expose a battery pack or tool to fire or excessive
temperature. Exposure to fire or temperatures above
130 °C / 265 °F may cause explosion.
g)Follow all charging instructions and do not charge the
battery pack or tool outside the temperature range
specified in the instructions. Charging improperly or at
temperatures outside the specified range may damage the
battery and increase the risk of fire.
5.7Service
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.
b)Never service damaged battery packs. Service of battery
packs should only be performed by the manufacturer or
authorized service provider.
8
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5 General Power Tool Safety Warnings
English
5.8General Chain Saw Safety Warnings
a)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.
b)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 the reversed hand configuration increases
the risk of personal injury and should never be done.
c) Hold the chain saw by insulated gripping surfaces only,
because the saw chain may contact hidden wiring. Saw
chain contacting a "live" wire may make exposed metal
parts of the chain saw "live" and could give the operator
an electric shock.
d)Wear eye protection. Further protective equipment for
hearing, head, hands, legs and feet is recommended.
Adequate protective equipment will reduce personal injury
from flying debris and or accidental contact with the saw
chain.
e)Do not operate a chain saw on a ladder, from a rooftop or
any unstable support. Operation of a chain saw in this
manner could result in serious personal injury.
f) 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.
g)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.
h)Carry the chain saw by the control 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.
i) Follow instructions for lubricating, chain tensioning and
changing the bar and chain. Improperly tensioned or
lubricated chain may either break or increase the chance
for kickback.
j) Cut wood only. Do not use chain saw for purposes not
intended. For example: do not use chain saw for cutting
metal, plastic, masonry or non-wood building materials.
Use of the chain saw for operations different than intended
could result in a hazardous situation.
k) Follow all instructions when clearing jammed material,
storing or servicing the chain saw. Make sure the switch
is off and the battery pack is removed. Unexpected
actuation of the chain saw while clearing jammed material
or servicing may result in serious personal injury.
l) This chain saw is not intended for tree felling. Use of the
chain saw for operations different than intended could
result in serious injury to the operator or bystanders.
m)Do not operate a chain saw in a tree unless you have
been specifically trained to do so. Operation of a chain
saw in a tree without proper training could increase the
risk of serious personal injury.
5.9Causes and Operator Prevention of Kickback
a)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.
b)Tip contact in some cases may cause a sudden reverse
reaction, kicking the guide bar up and back towards the
operator.
c)Pinching the saw chain along the top of the guide bar may
push the guide bar rapidly back towards the operator.
d)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.
e)Kickback is the result of chain saw misuse and/or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below:
1)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
0458-007-8621-A
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6 IMPORTANT SAFETY INSTRUCTIONS
kickback forces. Kickback forces can be controlled by
the operator, if proper precautions are taken. Do not let
go of the chain saw.
2)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.
3)Only use replacement guide bars and saw chains
specified by the manufacturer. Incorrect replacement
guide bars and saw chains may cause chain breakage
and/or kickback.
4)Follow the manufacturer's sharpening and maintenance
instructions for the saw chain. Decreasing the depth
gauge height can lead to increased kickback.
6IMPORTANT SAFETY
INSTRUCTIONS
6.1Intended Use
WARNING
■ This chain saw is designed specifically for in-tree surgery.
It is not designed for felling trees or cutting logs on the
ground. Use of the chain saw for operations different than
intended could result in serious injury or death.
■ This chain saw should be used only for work in a tree by
persons trained in special cutting and working techniques.
Because this saw is not intended for use on the ground,
this manual does not contain instructions for felling or for
limbing or bucking felled trees.
– Cut wood only. For example, do not use chain saw
for cutting metal, plastic or masonry.
– Read and follow the operating and use instructions
in this manual for approved applications and
recommended working techniques.
■ Observe all applicable federal, state and local safety
regulations, standards and ordinances.
– When using a chain saw for logging purposes, for
instance, refer to the OSHA regulations for "logging
operations" at 29 Code of Federal Regulations
1910.266.
■ Improper use could result in personal injury or property
damage, including damage to the chain saw.
– Use the chain saw and battery only as described in
this manual.
– Never attempt to modify or override the chain saw's
controls or safety devices in any way.
– Never use a chain saw that has been modified or
altered from its original design.
– Be sure to read and follow the warnings and
instructions for your battery and charger before
charging or starting work.
■ This power tool may be powered by a STIHL AP series
battery. Alternatively, it may be powered by a STIHL AR
series backpack battery in combination with an
AP Adapter. For approved battery types, see chapter
@ 27.1.
■ Using an AR series battery or AP battery bag with
connecting cord while climbing in a tree is not authorized
because it could lead to entanglement of the connecting
cord or otherwise increase the risk of injury from loss of
control or loss of balance.
– Use an AR series battery or AP battery bag with
connecting cord only when working from a lift
bucket. Never use while climbing in a tree.
Batteries, chargers and other accessories are sold
separately.
10
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6 IMPORTANT SAFETY INSTRUCTIONS
English
6.2Operator
WARNING
■ Working with the chain saw can be strenuous. The
operator must be in good physical condition and mental
health. To reduce the risk of personal injury from fatigue
and loss of control:
– Check with your doctor before using the chain saw if
you have any health condition that may be
aggravated by strenuous work.
– Do not operate the chain saw while under the
influence of any substance (drug, alcohol or
medication, etc.) that might impair vision, balance,
dexterity or judgment.
– Be alert. Do not operate the chain saw when you are
tired. Take a break if you become tired.
– Do not permit minors to use the chain saw.
– Bystanders, especially children, and animals should
not be allowed in the area where the chain saw is in
use.
■ Prolonged use of a chain saw (or other power tools)
exposing the operator to vibration may produce white
finger disease (Raynaud's phenomenon) or carpal tunnel
syndrome. These conditions reduce the hand's ability to
feel and regulate temperature. They produce numbness
and burning sensations and may also cause nerve and
circulation damage as well as tissue necrosis.
■ All factors which contribute to white finger disease are not
known. 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 white finger disease.
■ To reduce the risk of white finger disease and carpal
tunnel syndrome:
– Wear gloves while working and keep your hands
warm.
– Keep the chain saw well maintained. An improperly
maintained chain saw or one with loose components
will tend to have higher vibration levels.
– Keep the saw chain sharp. A dull chain will increase
cutting time, and pressing a dull chain through wood
will increase the vibration transmitted to your hands.
– Maintain a firm grip at all times, but do not squeeze
the handles with constant, excessive pressure. Take
frequent breaks.
■ These precautions do not guarantee that you will not
sustain white finger disease or carpal tunnel syndrome.
– Closely monitor the condition of your hands and
fingers if you are a regular operator.
– Seek medical advice immediately if any of the above
symptoms appear.
■ According to STIHL's current knowledge, the electric
motor of this chain saw should not interfere with a
pacemaker.
– However, persons with a pacemaker or other
implanted medical device should consult their
physician and device manufacturer before operating
this chain saw.
6.3Personal Protective Equipment
WARNING
■ To reduce the risk of personal injury:
– Always wear proper clothing and protective apparel,
including proper eye protection.
■ Loss of control and severe cut injuries may result if hair,
clothing or apparel make contact with the moving saw
chain or otherwise become entangled in the components
of the saw. To reduce the risk of severe personal injury:
– Wear sturdy and snug-fitting clothing that
also allows complete freedom of
movement.
– Wear the type of overalls, long pants or
chaps that contain pads of cut-retardant
material.
or cuffed pants, jewelry and any other apparel that
could be caught on branches, brush or the moving
chain.
– Secure hair above shoulder level before starting
work.
■ To reduce the risk of eye injury:
– Always wear goggles or close-fitting
protective glasses with adequate top and
side protection that are impact-rated and
marked as complying with ANSI Z87 "+".
– To reduce the risk of injury to your face, STIHL
recommends that you also wear a face shield or face
screen over your goggles or protective glasses.
■ To reduce the risk of head injury from falling branches or
other objects encountered during work:
– Wear an approved protective helmet.
– Any crew member in the cutting area should also
wear proper protective equipment, including an
approved helmet.
■ Prolonged exposure to power tool noise may result in
permanent hearing damage. To reduce the risk of hearing
damage:
– Wear sound barriers (ear plugs or ear
muffs).
– Regular operators should have their
hearing checked periodically.
– Be particularly alert and cautious when
using hearing protection. Your ability to
hear shouts, alarms or other audible
warnings is restricted.
■ Good footing is very important. To help maintain a secure
footing and reduce the risk of injury while working:
– Wear sturdy boots with non-slip soles
that are suitable for climbing in trees. Do
not wear sandals, flip-flops, open-toed or
similar footwear.
– Use proper equipment at all times to
protect yourself from falling.
– This top-handle chain saw is designed
for professional use only. It should be
used only for in-tree work by persons
who are trained in special cutting and
working techniques and who are properly
secured at all times (for example, in a lift
bucket or secured with ropes and a
safety harness).
■ To improve your grip and help protect your hands:
– Always wear heavy-duty non-slip work
gloves made of leather or another wearresistant material when handling the
chain saw or its chain.
6.4Chain Saw
WARNING
■ To reduce the risk of electric shock:
– Do not immerse the chain saw in water or other
fluids.
– Store the chain saw indoors.
■ The saw chain has many sharp cutters. Contacting the
cutters may result in serious laceration injuries, even if the
chain is not moving. To reduce the risk of such injuries:
– Keep hands, feet and other parts of your body away
from the chain.
– Wear heavy-duty work gloves when handling the
chain saw or its chain.
– Never touch a moving chain with your hand or any
other part of your body.
– Cover the guide bar with a chain scabbard and be
sure it engages before transporting or storing the
chain saw.
12
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6 IMPORTANT SAFETY INSTRUCTIONS
English
■ Reactive forces, including kickback, can be dangerous.
– Pay special attention to the section of this instruction
manual on "Kickback and Other Reactive Forces,"
@ 7.
■ This battery-powered chain saw is intended specifically
for in-tree use and maintenance. Use for other purposes
may increase the risk of personal injury and property
damage.
– Do not use the chain saw for felling or other cutting
operations on the ground.
– Read and follow the operating instructions in this
manual for approved applications, @ 8.
■ To reduce the risk of personal injury to the operator and
bystanders:
– Always release the trigger switch,
engage the chain brake by moving the
front hand guard to and remove the
battery before assembling, transporting,
adjusting, inspecting, cleaning,
servicing, maintaining or storing the
chain saw, and any other time it is not in
use.
■ Although certain unauthorized attachments may fit your
STIHL chain saw, their use may be extremely dangerous.
Only attachments supplied by STIHL or expressly
approved by STIHL for use with this specific model are
recommended.
– Use only attachments supplied or expressly
approved by STIHL.
– Never modify this chain saw in any way.
– Never attempt to modify or override the chain saw's
controls or safety devices in any way.
– Never use a chain saw that has been modified or
altered from its original design.
■ If the chain saw is dropped or subjected to similar heavy
impacts:
– Check that it is undamaged, in good condition and
functioning properly before continuing work.
– Check that the controls and safety devices, including
the chain brake, are working properly, @ 20.1.
– Check the LEDs for error messages, @ 13.1.2.
– Check that the battery has not been damaged.
Never use or charge a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Never work with a damaged or malfunctioning chain
saw or battery. In case of doubt, have the chain saw
and battery checked by your authorized STIHL
servicing dealer.
■ If the chain saw or battery is damaged, not working
properly, has been left outdoors or dropped into water or
other liquid, its components may no longer function
properly and safety devices may be inoperative. To
reduce the risk of personal injury and property damage:
– Take the chain saw and battery to your authorized
STIHL servicing dealer to be checked before further
operation.
■ Genuine STIHL replacement parts are specifically
designed to match your chain saw and meet safety and
performance requirements. Use of parts that are not
authorized or approved by STIHL may cause serious or
fatal injury or property damage.
– STIHL recommends that only identical STIHL
replacement parts be used.
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6 IMPORTANT SAFETY INSTRUCTIONS
6.5Using the Chain Saw
6.5.1Before Operation
WARNING
■ Misuse or unauthorized use may result in personal injury
and property damage.
– Use the chain saw only as described in this
instruction manual.
■ For proper assembly of the bar and chain:
– Read and follow the instructions on mounting the
guide bar and chain, @ 16.2.1.
■ The chain, guide bar and sprocket must match each other
in gauge and pitch. Before mounting or replacing:
– Read the information on guide bar and chain
combinations, @ 28.1.
– Read and follow the instructions on kickback and
other reactive forces, @ 7.
– Select the shortest bar that will meet your cutting
needs. Longer bars add weight and may be more
difficult to control.
■ Proper tension of the chain is extremely important to
maximize cutting performance and reduce the risk of
personal injury from chain breakage, derailment or
reactive forces:
– Never cut with a loose chain. If the chain becomes
loose while cutting, switch off the motor, engage the
chain brake and remove the battery from the chain
saw before tightening the chain. Never attempt to
adjust the chain while the battery is inserted.
– Read and follow the chain tensioning instructions,
@ 16.3.
– Always make sure the chain sprocket cover is
tightened securely after tensioning the chain in order
to secure the bar. Never start the chain saw with the
chain sprocket cover loose or missing.
– Check chain tension once more after tightening the
chain sprocket cover.
– Check chain tension periodically thereafter at
regular intervals (only after engaging the chain brake
and removing the battery).
■ Using a chain saw that is modified, damaged, improperly
adjusted or maintained, or not completely and securely
assembled can lead to a malfunction and increase the risk
of serious personal injury or death.
– Never operate a chain saw that is modified,
damaged, improperly maintained or not completely
and securely assembled.
– Always check your chain saw for proper condition
and operation before starting work, particularly the
retaining button, trigger switch, trigger switch
lockout, front hand guard, chain brake and cutting
attachment.
– Ensure that the trigger switch and trigger switch
lockout move freely and always spring back to the
locked position when released. The trigger switch
must not engage until the trigger switch lockout is
depressed.
– Never attempt to modify or override the controls or
safety devices in any way.
– If your saw or any part is damaged or does not
function properly, take it to your authorized STIHL
servicing dealer. Do not use the saw until the
problem has been corrected.
■ Before inserting the battery:
– Check the contacts in the battery compartment for
corrosion or other foreign matter and keep clean.
– Never insert or use a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Read and follow the instructions on switching on the
chain saw, @ 19.1.
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■ To help reduce the risk of serious personal injury or death
from unintentional starting:
– Be sure the trigger switch and trigger switch lockout
are in the off position when inserting the battery.
– Avoid contacting the trigger switch lockout and
trigger switch when grasping the control handle of
the chain saw.
– Release the trigger switch and trigger switch lockout
and engage the chain brake before removing the
battery.
– Remove the battery and engage the
chain brake before assembling,
transporting, adjusting, inspecting,
cleaning, servicing, maintaining or
storing the chain saw, and any time it is
not in use.
– Never leave the chain saw unattended when the
battery is inserted.
– Never store the battery in the chain saw.
■ Before disengaging the chain brake and switching on your
chain saw, take the following steps to reduce the risk of
personal injury from reactive forces, loss of control or
inadvertent contact with the chain:
– Be sure that the guide bar and chain are clear of you
and all other obstructions and objects, including the
ground.
– Never switch on the chain saw when the guide bar is
in a cut or kerf. Doing so could lead to reactive forces
and injury.
– Read and follow the instructions on switching on the
chain saw, @ 19.2.
6.5.2Holding and Controlling the Chain Saw
WARNING
■ To reduce the risk of personal injury from unintentional
starting when grasping the control handle or carrying the
chain saw:
– Wrap the fingers of your right hand tightly around the
control handle. Avoid contacting the trigger switch
lockout or trigger switch.
■
0000-GXX-3214-A0
■ To maintain a firm grip and properly control your chain
saw:
– Keep the handles clean and dry at all times. Keep
them free of moisture, pitch, oil, grease and resin.
■ To reduce the risk of serious or fatal injuries to the
operator or bystanders from loss of control:
– Avoid contacting any object with the
upper quadrant of the tip of the guide
bar. It may cause kickback to occur.
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6 IMPORTANT SAFETY INSTRUCTIONS
– Always hold the chain saw firmly with
both hands when you are working. Onehanded operation increases the risk of
injury. It makes it difficult to control
reactive forces and to prevent the bar
and chain from skating or bouncing along
the limb or log.
– Even for those compact chain saws
designed for use in confined spaces,
one-handed operation increases the risk
that the operator may lose control.
– Place your left hand on the front handle and your
right hand on the control handle (see illustration).
Left-handers must follow these instructions too.
– Wrap your fingers tightly around the handles,
keeping the handles cradled between your thumb
and forefinger.
– Keep all parts of your body clear of the cutting
attachment whenever the battery is inserted. Stand
to the left of the cut while cutting, outside of the
cutting plane.
– Read and follow all warnings and instructions in the
chapter Kickback and Other Reactive Forces, @ 7.
■ Operating the chain saw with one hand is extremely
dangerous. One-handed operation makes it difficult to
oppose and absorb reactive forces (pushback, pull-in,
kickback) without losing control of the chain saw. It also
makes it difficult to prevent the bar and chain from skating
or bouncing along a limb or log. To reduce the risk of
serious or fatal injury to the operator or bystanders from
loss of control:
– Never attempt to operate the chain saw
with one hand.
– Even for those compact chain saws
designed for use in confined spaces,
one-handed operation increases the risk
that the operator may lose control.
– Keep your body clear of the cutting attachment
whenever the saw is in operation. Position yourself
to the left of the cut while bucking.
– Never work in a tree unless you have received
specific, professional training for such work, are
properly secured (with a tack and harness system,
lift bucket or other appropriate means), have both
hands free for operating the chain saw in a cramped
environment and have taken proper precautions to
avoid injury from falling limbs or branches.
– The use of climbing aids such as spikes or climbing
irons also requires special training. Always secure
the chain saw with a rope (tied to hinged carrying
ring) and attach it to a lifeline. Cordon off the work
area in order to reduce the risk of injuries and
damage to bystanders or property (e.g., motor
vehicles) from falling branches.
– When securing the chain saw to your belt or
transporting it with ropes, always use the hinged
carrying ring on the rear of the saw's housing,
@ 22.1.
■ To reduce the risk of serious or fatal cut injuries to the
operator or bystanders from loss of control, keep proper
footing and balance at all times:
– Take special care in overgrown or wet terrain and
always watch for hidden obstacles such as tree
stumps, roots, rocks, holes and ditches to avoid
stumbling.
– Be extremely cautious when working on slopes or
uneven ground.
– For better footing, always clear away fallen
branches, scrub and cuttings. Freshly debarked logs
and other material can increase the danger of
slipping, tripping or falling.
– Use extreme caution when cutting small-size brush,
branches and saplings because slender material
may catch the chain and spring toward you or pull
you off balance.
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■ To reduce the risk of falling:
– Keep rotating chain well clear of harness and
lifelines to prevent them being severed. It is
essential to use a double lifeline.
– Check condition of harness, belts and ropes before
each use.
– Always pull the saw out of the cut with the chain
running.
– After finishing a cut, activate the chain brake to lock
the chain and switch off the saw before moving the
saw to another position in the tree.
■ To reduce the risk of injury from loss of control:
– Never work on a ladder, roof or while
standing on any other insecure support.
– Never operate the chain saw above
shoulder height.
0000099343_001
– Do not overreach. Keep proper footing and balance
at all times.
– Never switch on the chain saw when the guide bar is
in a cut or kerf. Doing so could lead to reactive forces
and injury. Instead, remove the guide bar from the
cut and re-enter at full speed, taking care to avoid
contacting any object with the tip of the guide bar.
■ The bumper spike is designed to provide greater control
of the chain saw while cutting. If you work without the
bumper spike, the chain saw may pull you forward
suddenly. This could cause loss of control or, if the tip of
the guide bar strikes an object, kickback.
– Always work with the bumper spike to maintain
better control of the saw.
■ Applying pressure to the chain saw when reaching the end
of a cut may cause the bar and rotating chain to accelerate
out of the kerf, go out of control and strike the operator or
some other object. To reduce the risk of injury:
– Use caution when approaching the end of a cut.
– Never put pressure on the chain saw when reaching
the end of a cut.
6.5.3Working Conditions
WARNING
■ Operate your chain saw only under good visibility during
favorable daylight conditions.
– Postpone the work if the weather is windy, foggy,
rainy or inclement.
– Never cut near power lines.
■ Your chain saw is a one-person machine.
– Do not allow other persons in the general work area.
– Bystanders, especially children, and animals should
not be allowed in the area where it is in use.
– Switch off the motor immediately if you are
approached.
■ To reduce the risk of injury to bystanders and
unauthorized users:
– Never leave the chain saw unattended when the
battery is inserted.
– Switch off the chain saw, engage the chain brake
and remove the battery during work breaks and any
other time the chain saw is not in use.
■ Sparks generated from the operation of the chain saw may
be capable of igniting combustible gases, liquids, vapors,
dusts or other combustible materials and substances. To
reduce the risk of fire and explosion:
– Never operate the chain saw in a location where
combustible gases, liquids, vapors, dusts or other
combustible materials and substances are present.
– Read and follow recommendations issued by
government authorities (e.g., OSHA) for identifying
and avoiding the hazards of combustible gases,
liquids, vapors, dusts or other combustible materials
and substances.
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6 IMPORTANT SAFETY INSTRUCTIONS
■ If a rotating 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.
– When there is a risk of fire or wildfire, do not use your
chain saw around flammable materials or around dry
vegetation or brush.
– Contact your local fire authorities or the U.S. Forest
Service if you have any question about whether
vegetation and weather conditions are suitable for
the use of a chain saw.
■ Using this chain saw and sharpening its chain can
generate dust, oil mist and other substances containing
chemicals known to cause respiratory problems, cancer,
birth defects and other reproductive harm.
– Consult governmental agencies such as EPA,
OSHA, CARB and NIOSH and other authoritative
sources on hazardous materials if you are unfamiliar
with the risks associated with the particular
substances you are cutting or with which you are
working.
■ 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 or other airborne contaminants,
especially 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.
– Always work with a properly sharpened chain, which
produces wood chips rather than fine dust.
– To the extent possible, operate the chain saw so that
the wind or operating process directs any dust, mist
or other particulate matter raised by the chain saw
away from the operator.
– When respirable dust or other particulate matter
cannot be kept at or near background levels, always
wear a respirator that is approved by NIOSH and
rated for worksite-specific conditions. Follow the
recommendations of governmental authorities (e.g.,
OSHA/NIOSH) and occupational and trade
associations.
■ If the vegetation being cut or the surrounding ground is
coated with a chemical substance, such as pesticide or
herbicide:
– Read and follow the instructions and warnings that
accompanied the substance coating the vegetation
or surrounding ground.
■ Breathing asbestos dust is dangerous and can cause
severe or fatal illness, respiratory illness or cancer,
including mesothelioma. The use and disposal of
asbestos-containing products is strictly regulated by
OSHA and the EPA.
– Do not use your chain saw to cut or disturb asbestos
or asbestos-containing products.
– Stop work immediately and contact the relevant
state and local authorities and/or EPA, your
employer or local OSHA representative if you have
reason to believe that you might be disturbing
asbestos.
■ Repeated contact with waste oil can cause skin cancer
and its use is harmful to the environment.
– Do not use waste oil to lubricate the bar and chain of
your STIHL chain saw.
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English
6.5.4Operating Instructions
WARNING
■ To reduce the risk of severe personal injuries from
unintentional starting:
– Never touch a chain with your hand or any part of
your body when the battery is inserted, even when
the chain is not rotating.
– Avoid contacting the trigger switch lockout and
trigger switch when grasping the control handle of
the chain saw.
■ The chain continues to move for a short period after the
trigger switch is fully released.
– Wait for the chain to stop and engage the chain
brake before walking with the chain saw or putting it
down.
■ In the event of an emergency:
– Switch off the motor immediately, engage the chain
brake and remove the battery.
■ 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.
– Never operate the chain saw with a damaged or
missing chain catcher.
■ Contacting foreign objects while sawing might cause the
chain to break or be thrown, or cause the chain saw to
propel dangerous debris or kick back in the direction of the
operator. To reduce the risk of severe or fatal personal
injury caused by contact with foreign objects:
– Inspect the tree, log or branch before cutting.
– Remove any foreign objects to ensure that the wood
is free of materials such as nails, spikes, cables, or
wires.
– Before starting a cut, ensure that it can be completed
without contacting surrounding objects or structures
such as fencing or stonework.
■ Check the chain and guide bar at regular short intervals
during operation, or immediately if there is a change in
cutting behavior:
– Switch off the motor, activate the chain brake and
remove the battery.
– Check the condition and tension of the chain. Look
for damage to the chain or guide bar.
– If the chain cannot be properly tensioned, or if other
components of the saw are worn or damaged, stop
work immediately and take your chain saw to an
authorized STIHL servicing dealer for inspection,
repair or maintenance.
DANGER
■ To reduce the risk of electrocution:
– Never operate this chain saw in the
vicinity of any wires or cables that may
be carrying electric current.
– Never cut near power lines.
– Do not rely on the chain saw's insulation
against electric shock.
7Kickback and Other Reactive Forces
7.1Reactive Forces
WARNING
■ Reactive forces may occur any time the chain is rotating.
Reactive forces can cause serious or fatal personal injury.
■ The powerful forces 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.
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7 Kickback and Other Reactive Forces
■ 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
– Pull-in
– Pushback
7.2Kickback
7.2.1Kickback
WARNING
Kickback may occur when the moving chain near
the upper quadrant of the bar nose contacts a
solid object or is pinched.
■ When this occurs, the energy driving the chain can create
a force that moves the chain saw in a direction opposite to
the chain movement at the point where the 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 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 chain speed, the
speed at which the bar and chain contact the object, the
location and angle of contact, the condition of the chain,
and how quickly the chain is slowed or stopped, among
other factors.
– The type of bar and 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.
7.2.2Chain Saw Kickback Standards
The following standards apply with respect to kickback:
– § 19.107 of UL 62841-4-1
– § 5.11 of ANSI/OPEI B175.1
These standards, referred to as "the chain saw kickback
standards" in this chapter, 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 25° 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 chain saws are
measured by applying a computer program to test results
from a kickback test machine.
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7 Kickback and Other Reactive Forces
WARNING
■ Compliance with the chain saw kickback standards does
not mean that the bar and chain will rotate at most 25° in
a real life kickback.
■ The computer-derived angles of the chain saw standards
may bear no relationship to actual kickback bar rotation
angles that may occur in a real life cutting situation.
■ Devices designed to reduce the risk of kickback injuries
may lose some of their effectiveness when they are no
longer in their original condition, especially if they have
been improperly maintained.
– Read and follow the safety precautions and
instructions in this manual.
– When working, always position the chain saw such
that your body is clear of the cutting attachment and
outside of the cutting plane.
– Follow the maintenance and service instructions in
this manual.
■ For the chain saw to meet the chain saw kickback
standards, use only the following cutting attachments:
– Compliant bar and chain combinations listed in
Combinations of Guide Bars and Saw Chains,
@ 28;
– Other replacement bar and chain combinations
marked in accordance with the standards for use on
the chain saw; or
– Replacement chain designated "low kickback
chain."
7.2.3Devices for Reducing the Risk of Kickback Injury
The STIHL Quickstop chain brake and STIHL's greenlabeled, reduced kickback bars and green-labeled, low
kickback chains are designed to reduce the risk of kickback
injury.
1. STIHL Quickstop Chain Brake
English
0000-GXX-6266-A0
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 toward the user in a rotating motion
around the front handle. The brake is designed to engage
if the left hand contacts the front hand guard, which is the
activation lever for the brake, and pushes it forward.
– Inertia Activation: All STIHL chain saws are equipped with
an inertia Quickstop chain brake. If the kickback impulse
is strong enough, this alone is sufficient to engage the
brake, even without the operator's hand contacting the
front hand guard.
WARNING
■ To reduce the risk of kickback injury:
– Never use a saw if the chain brake does not function
properly.
– When in doubt, take the saw to an authorized STIHL
servicing dealer for inspection and/or repair.
– Do not use the saw until the problem has been
corrected.
■ In a kickback situation, the front hand guard helps protect
your left hand from contacting the chain. Removal of the
front hand guard on a chain saw equipped with a
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7 Kickback and Other Reactive Forces
Quickstop chain brake will reduce this protection and also
disable the chain brake, increasing the risk of kickback
injury.
– Never operate your saw without a properly
functioning front hand guard. If the front hand guard
is missing, manual activation and inertia activation of
the chain brake will be completely disabled.
– Never attempt to remove, modify or disable the front
hand guard or any other component of the chain
brake.
■ No Quickstop or other chain brake device prevents
kickback. These devices are designed to reduce the risk
of injury, if activated, in certain kickback situations. To
reduce the risk of severe personal injury or death from
kickback:
– Always follow the instructions in this manual and
follow good working technique. For example,
position your body clear of the cutting attachment
whenever the motor is running. Stand to the left of
the cut while bucking, outside of the cutting plane.
See chapter Holding and Controlling the Chain Saw,
@ 6.5.2.
– Maintain as much distance as possible, and never
less than 25 degrees, between the bar and your
body to ensure that the Quickstop has sufficient time
to activate and stop the chain before reaching any
part of your body.
– Follow the other precautions provided in chapter
@ 8.
■ An improperly maintained chain brake may increase the
time needed to stop the chain after activation, or may not
activate at all. For the Quickstop to reduce the risk of
kickback injury, it must be properly maintained and in
good working order.
– Read and follow the instructions on engaging and
disengaging the chain brake, @ 17, and
maintaining and repairing it, @ 17.3.
STIHL offers a variety of guide bars and chains. STIHL
reduced kickback bars and low kickback chains are
designed to reduce the risk of kickback injury. Other chains
are designed to achieve higher cutting performance or
sharpening ease, but are more prone to kickback and may
kick back with more energy, making it more difficult to
control the chain saw.
STIHL has developed a color code system to help you
identify the STIHL reduced kickback bars and low kickback
chains.
– Cutting attachments with green labels on the packaging
are designed to reduce the risk of kickback injury.
– Matching green-marked or labeled chain saws with green-
labeled bars and green-labeled chains provides
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, who have 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
chain saw equipped with a STIHL Quickstop chain brake for
both experienced and inexperienced operators.
STIHL recommends green-labeled bars and chains for all
chain saws. See your "STIHL Bar and Chain Information"
leaflet for details.
New bar and 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.
2. Low Kickback Saw Chain and Reduced Kickback Bars
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7 Kickback and Other Reactive Forces
English
WARNING
■ Use of bar and chain combinations not listed in the STIHL
Bar and Chain Information leaflet (or other combinations
that do not comply with the chain saw standards) may
increase kickback forces as well as the propensity for
kickback and increase the risk of kickback injury.
– Please ask your authorized STIHL servicing dealer
to properly match your chain saw with the
appropriate bar and chain combination to reduce the
risk of kickback injury.
■ Reduced kickback bars and low kickback chains do not
prevent kickback, but they are designed to reduce the risk
of kickback injury.
– STIHL recommends green-labeled bars and green-
labeled chains for all chain saws and all users.
■ Even if your saw is equipped with a Quickstop chain
brake, a reduced kickback bar and/or low kickback chain,
this does not eliminate the risk of injury from kickback.
– Observe all safety precautions discussed in this
manual to avoid kickback situations.
a. Low Kickback Saw Chain
Some types of chain have specially designed components to
reduce the propensity for kickback and the force of kickback
if it occurs. STIHL has developed low kickback chain for your
chain saw.
A "low kickback chain" is a chain that has met the kickback
performance requirements of ANSI/OPEI B175.1 when
tested according to the provisions specified in ANSI/OPEI
B175.1.
WARNING
■ Some low kickback chains have not been tested with all
chain saw and bar combinations. There are potential saw,
bar and low kickback chain combinations which have not
been specifically certified to comply with the 25°
computer-derived kickback angle of the chain saw
standards.
– STIHL recommends green-labeled bars and green-
labeled chains for all chain saws and all users.
– Please see your STIHL Bar and Chain Information
leaflet for the appropriate bar and chain
combinations for your saw.
– Please ask your authorized STIHL servicing dealer
to properly match your chain saw with the
appropriate bar and chain combination to reduce the
risk of kickback injury.
■ A blunt or incorrectly sharpened chain may reduce or
negate the effectiveness of design features intended to
reduce kickback energy and the propensity for kickback.
Improper lowering or sharpening of the depth gauges or
changing the shape of the cutters may increase the risk
and the energy of kickback.
– Always cut with a properly sharpened chain.
– Read and follow the instructions on sharpening a
chain, @ 25.
■ Any chain saw mounted 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
and because the design of bow guides places the upper
portion of the bar closer to the operator's body. Using a
low kickback chain will not significantly reduce the risk of
kickback injury when used on a bow guide.
– Never mount a bow guide on any STIHL chain saw.
b. 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 chains.
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7 Kickback and Other Reactive Forces
WARNING
■ When used with other, more aggressive chains,
green-labeled reduced kickback bars may be less
effective in reducing kickback.
– STIHL recommends green-labeled bars and green-
labeled chains for all chain saws and all users.
■ For proper balance and to comply with the chain saw
standards:
– Use only bar lengths listed in this manual, @ 28.
7.2.4To Avoid Kickback
The best protection from personal injury that may result from
kickback is to avoid kickback situations:
1)Hold the chain saw firmly and with both hands and
maintain a secure grip, with your right hand on the control
handle and left hand on the front handle. Maintain a
secure grip with thumbs and fingers encircling the chain
saw handles. Don't let go.
2)Make sure the area in which you are cutting is free from
obstructions.
3)Be aware of the location of the guide bar nose at all times.
Never let the nose of the guide bar unintentionally 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)Do not overreach.
5)Do not 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 re-entering a previous cut.
9)Do not attempt to plunge cut if you are not experienced
with this cutting technique.
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.
13)Use only replacement bars and chains specified by
STIHL, or the equivalent.
7.3Pull-in
WARNING
■ Pull-in occurs when the chain on the bottom of the bar is
suddenly stopped or significantly slowed 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, which, in turn, may
cause serious or fatal injury. If the tip contacts an object,
kickback may occur.
■ Pull-in usually 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.
■ To reduce the risk of pull-in:
– Cut with a sharp, properly tensioned chain.
– Always start a cut with the chain rotating at full speed
and with the bumper spike in contact with the wood.
– Use wedges to open the kerf or cut, where possible.
– Use extreme caution when cutting small-size brush
and saplings which may easily catch the chain,
spring towards you or pull you off balance.
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8 Basic Working Technique
0000-GXX-1349-A0
English
7.4Pushback
WARNING
■ Pushback occurs when the chain on the top of the bar is
suddenly stopped or significantly slowed when it is
pinched, caught or encounters a foreign object in the
wood. The reaction of the chain may drive the saw rapidly
straight back toward the operator, causing loss of control
which, in turn, may cause serious or fatal injury.
■ Pushback usually occurs when the top of the bar is used
for cutting.
■ To reduce the risk of pushback:
– Be alert to forces or situations that may cause
material to pinch or bind the top of the chain.
– Do not cut more than one log at a time.
– Do not twist the chain saw when withdrawing the bar
from an underbuck cut because the chain can pinch
or bind.
– Cut with a sharp, properly tensioned chain.
8Basic Working Technique
8.1Intended Uses
WARNING
■ This lightweight chain saw equipped with a top handle is
designed specifically for in-tree use.
■ This chain saw is not designed for felling trees or other
cutting operations on the ground.
■ Before starting any cutting operation, fully charge your
battery and ensure that all cuts necessary can be
completed on a single charge.
– Fully charge the battery before starting work.
– Ensure that all necessary cuts can be completed
using the existing charge before starting.
■ Position the chain saw in such a way that your body is
clear of the cutting attachment whenever the motor is
running.
8.2Pruning
Pruning is selectively removing branches from a standing
tree.
WARNING
■ To reduce the risk of injury from loss of control:
– Do not use the chain saw one-handed.
– Never operate the chain saw above shoulder height
or cut overhead.
– Do not overreach.
– If you are unable to follow these instructions, you
must use a different tool, such as a pole pruner.
– If conditions permit, work from a lift bucket.
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2
1
0000-GXX-C576-A0
B
A
8 Basic Working Technique
■ This lightweight chain saw is equipped with a top handle
and is designed specifically for in-tree use. If the operator
is not properly secured for two-hand use when using this
saw in a tree, there is an increased risk of injury from loss
of control.
■ For this reason, this chain saw should be used only for
work in a tree by persons trained in special cutting and
working techniques. This type of chain saw is not
designed for cutting work on the ground, such as felling
and bucking.
■ Because this chain saw is not intended for use on the
ground, this manual does not contain instructions for
felling trees or for limbing and bucking felled trees. For
instructions on these techniques when using other STIHL
chain saw models, see the instruction manuals for these
other saws or the STIHL Chain Saw Safety Manual, which
is available free of charge online or from your authorized
STIHL dealer.
■ To reduce the risk of injury:
– Never position yourself directly underneath the
branch you are cutting.
– Watch for falling branches. Keep sufficient distance
away from the falling wood.
When pruning, precut branches when necessary to help
avoid splitting wood or tearing bark.
To cut branches from a standing tree:
B
2
► Make the first cut (1) on the underside (A) of the branch.
Cut through approximately 1/4 of the diameter of the
branch.
► Make the second cut (2) on the top side (B) of the branch,
directly above the first cut.
► Make the third (finishing) cut (3) closer to the trunk,
leaving adjacent bark firmly attached.
Other acceptable techniques for pruning trees can be found
in ANSI A300.
8.3Cutting Branches under Tension
A = Compression Side
B = Tension Side
WARNING
■ There is an increased danger of pinching the chain saw
when cutting branches under tension. The tension in wood
can also release suddenly and with great force, propelling
the limb or chain saw into the saw operator, causing injury
or loss of control.
26
1
3
A
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8 Basic Working Technique
A
A
0000096547_002
1
0000099286_001
■ To reduce the risk of severe or fatal personal injury from
reactive forces, including kickback, or loss of control when
cutting wood under tension:
– Always start with a relieving cut (1) at the
compression side (A) of the branch, and then make
a bucking cut (2) at the tension side (B).
– If a pinch occurs that traps the bar/chain, switch off
the motor, activate the chain brake, remove the
battery and remove the saw from the branch,
exercising caution that the limb does not suddenly
snap or release.
8.4Blocking - Removing Sections from a Standing
Tree
8.4.1Conventional Notch
WARNING
■ These in-tree instructions apply to STIHL top-handle
chain saws, designed exclusively for professional, in-tree
use. For basic instructions on felling a tree from the
ground, please see the instruction manual for your STIHL
rear-handle chain saw.
■ These basic working techniques are not meant to
substitute for the judgment of an experienced professional
with direct knowledge of on-site conditions. A different
type of notch or working technique may be appropriate for
your particular circumstance. Always exercise good
professional judgment and discretion in determining how
to safely complete a cutting task.
English
The notch (A) determines the direction of fall. Make the
notch perpendicular to the desired line of fall. Be aware of
conditions such as wind, tree lean, the slope of the terrain
and other factors that could alter the direction of fall.
For a conventional notch:
► First, cut down at a 45 degree angle to a depth of
approximately 1/5 to 1/4 of the trunk diameter.
0458-007-8621-A
When making the notch, use the gunning sight (1) on the
saw to check the desired direction of fall:
► Place the felling notch perpendicular to the line of fall.
Position the saw so that the gunning sight (1) points
exactly in the direction you want the tree to fall.
► To complete the felling notch, make a horizontal cut that
meets the bottom of the first cut.
► Remove the resulting 45 degree piece and confirm that
the back of the felling notch is perpendicular to the desired
line of fall.
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0000-GXX-A336-A0
8 Basic Working Technique
8.4.2Back Cut
AABBC
C
► Begin the back cut (C) on the same level as the bottom of
the notch (A).
► Cut horizontally toward the notch.
► Leave approximately 1/10 of the tree's diameter uncut (B).
This is the hinge.
► Do not cut through the hinge – you could lose control of the
direction of fall.
When removing sections of a tree:
► Make sure all bystanders are clear of the area before
starting work.
► Maintain adequate distance from the nearest structure to
prevent property damage from falling material.
► Take extra precautions in the vicinity of roads, railways
and power lines. Inform the police, utility company or
railway authority before beginning to cut.
WARNING
■ Never cut through the hinge when making your back cut.
The hinge helps control the fall of the tree. Cutting through
the hinge will eliminate your ability to control the fall and
may result in serious or fatal personal injury or property
damage.
■ In order to reduce the risk of personal injury, never
position yourself directly behind the trunk when it is about
to fall, since part of the trunk may split and come back
toward the operator (barber-chairing), or the tree may
jump back off the stump.
■ Always position yourself and your equipment away from
material being removed.
■ When the material starts to fall, withdraw the bar and
release the trigger switch. After finishing a cut, activate the
chain brake before changing position in the tree.
WARNING
■ This chain saw is not designed for cutting large diameter
trees, and using it to cut large diameter trees could result
in an inability to control the fall, which can lead to serious
or fatal personal injury.
0000-GXX-A332-A0
■ Before starting any cutting operation, make sure the saw
you are using has sufficient size, power and run-time to
complete the cutting task efficiently and without recharging. Alternatively, have multiple charged batteries
available for use, select a more powerful chain saw, or
select a more powerful battery.
■ There are a number of factors that may affect the intended
direction of fall, e.g., wind direction and speed, lean of
tree, surrounding trees and obstacles, sloping ground,
wood structure, or decay.
– To reduce the risk of severe or fatal injury to yourself
or others, look for, analyze and plan for these
conditions prior to beginning the cut.
– Removing portions of a tree with a diameter greater
than the effective cutting length of the guide bar
requires use of special cutting techniques (e.g.,
sectioning method, plunge cut). These methods can
28
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9 Battery Safety
English
be 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.
■ Trees that are split, decayed or rotted inside, or that are
leaning or otherwise under tension, are more likely to snap
or split while being cut, causing serious or fatal injury to
the operator or bystanders.
– Inexperienced users should never attempt to cut
such trees.
– Look for broken or dead branches which could
vibrate loose and fall on the operator. Certain types
of trees are more susceptible to this condition, such
as Douglas firs.
– Always observe and be aware of the general
condition of the tree.
9Battery Safety
9.1Warnings and Instructions
WARNING
■ Read and follow the safety precautions on the battery and
all warnings and instructions that accompany it.
■ Use of unauthorized batteries can damage the power tool
and result in fire, explosion and personal injury and
property damage.
– Use only genuine STIHL batteries with this power
tool. For approved battery types, see chapter
@ 27.1.
■ Use of STIHL AR or AP series batteries for any purpose
other than powering STIHL products could be extremely
dangerous.
– Use STIHL AR and AP series batteries only to power
compatible STIHL products.
■ Use of unauthorized chargers can damage the battery and
result in fire, explosion and personal injury and property
damage.
– Charge STIHL AP series batteries only with genuine
STIHL AL 101, AL 300 or AL 500 series chargers.
– Charge STIHL AR series backpack batteries only
with genuine STIHL AL 300 or AL 500 series
chargers.
■ The battery contains safety features and devices which, if
damaged, may allow the battery to generate heat, rupture,
leak, ignite or explode.
– Never heat the battery above 212 °F
(100 °C).
– Never incinerate or place the battery on
or near fires, stoves or other hightemperature locations.
– Never use or charge a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Never open, disassemble, crush, drop, subject to
heavy impact or otherwise damage the battery.
– Never expose the battery to microwaves or high
pressures.
– Never insert objects into the battery's cooling slots.
0458-007-8621-A
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9 Battery Safety
■ Extreme temperatures may cause the battery to generate
heat, rupture, leak, ignite or explode, resulting in severe or
fatal personal injury and property damage. Exposure to
temperatures outside the recommended temperature
range may also reduce battery life and performance.
– Use and store the battery only within an
ambient temperature range of 14 °F to
122 °F (-10 °C to 50 °C).
– Never store the battery in direct sunlight
or inside a vehicle in hot weather.
■ To reduce the risk of personal injury and property damage
in the event the battery emits smoke, an unusual smell or
feels unusually hot while using, charging or storing:
– Immediately discontinue using or charging the
battery. Contact the authorities in the event of fire or
explosion.
■ To reduce the risk of a short circuit, which could lead to
electric shock, fire and explosion:
– Keep STIHL AR 900,1000, 2000, 3000
backpack batteries dry. Protect from
rain, water and other liquids. Attach the
rain cover to a STIHL AR 1000, 2000,
3000 battery before starting work in rain
or in very damp conditions.
– If a STIHL AP or AR L battery has been
exposed to rain during work, remove it
from the product and allow it to dry
indoors. Make sure it is completely dry
before charging or using.
– Never immerse any STIHL battery in
water or other liquids.
– Never bridge the battery terminals with wires or
other metallic objects.
– Keep a battery that is not in use away from metal
objects (e.g., paper clips, nails, coins, keys).
– Never transport or store the battery in a metal
container.
– Store the battery indoors in a dry room.
– Never store the battery in damp or corrosive
environments or in conditions that could lead to
corrosion of its metal components.
– Protect the battery from exposure to corrosive
agents such as garden chemicals and de-icing salts.
– Protect the battery from exposure to conductive
liquids such as salt water.
– Do not attempt to repair, open or disassemble the
battery. There are no user-serviceable parts inside.
■ Leaking battery fluid is potentially harmful and can cause
skin and eye irritation, chemical burns and other serious
personal injury.
– Avoid contact with skin and eyes.
– Use an inert absorbent such as sand on spilled
battery fluid.
– In the event of accidental contact, immediately rinse
the contact area thoroughly with mild soap and
water.
– If fluid gets into your eye(s): do not rub. Rinse water
over the open eye(s) for at least 15 minutes and
seek medical attention.
■ A battery fire can be dangerous. To reduce the risk of
severe personal injury and property damage in the event
of fire:
– Evacuate the area. Fire can spread rapidly. Stay
clear of any vapors generated and maintain a safe
distance.
– Contact the fire department.
– Although water can be used to put out a battery fire,
use of a multi-purpose dry chemical fire extinguisher
is preferable.
– Consult the fire department regarding proper
disposal of a burned battery.
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10 Maintenance, Repair and Storage
English
10 Maintenance, Repair and Storage
10.1 Warnings and Instructions
WARNING
■ There are no user-authorized repairs for the battery or
chain saw. To reduce the risk of fire, electric shock or
other personal injury and property damage:
– Users may carry out only the cleaning and
maintenance operations described in this manual.
– Strictly follow the cleaning and maintenance
instructions in the appropriate sections of this
instruction manual.
– STIHL recommends that all repair work be
performed by authorized STIHL servicing dealers.
■ Unintentional starting may result in personal injury or
property damage. To reduce the risk of personal injury
and property damage from unintentional starting:
– Engage the chain brake by moving the
front hand guard forward to and
remove the battery before inspecting the
chain saw or carrying out any cleaning,
maintenance or repair work, before
storing, and any other time it is not in
use.
■ The bar and chain are the only user-serviceable parts of
the chain saw. Proper maintenance will help maintain
cutting performance and reduce the risk of personal injury
caused by chain derailment and reactive forces.
– Wear gloves when handling the saw chain.
– Keep the chain, guide bar and sprocket clean.
– Replace the chain and guide bar when they become
worn or damaged.
– Keep the chain sharp and at proper tension.
– Tighten all nuts, bolts and screws after each use.
■ Like an automobile brake, the chain brake on your chain
saw incurs wear each time it is engaged. In order for the
chain brake on your STIHL chain saw to function properly,
it must be properly maintained. Return the chain saw to
your STIHL servicing dealer for periodic inspection and
servicing of the brake system according to the following
schedule:
– Heavy Usage: every 3 months
– Moderate Usage: every 6 months
– Occasional Usage: every 12 months
■ Return the chain saw immediately for maintenance
whenever there is a change in its operating
characteristics.
■ Use of parts that are not authorized or approved by STIHL
may cause serious or fatal injury or property damage.
– STIHL recommends that only identical STIHL
replacement parts be used for repair or
maintenance.
■ To reduce the risk of short circuit and fire:
– Keep the battery guides free of foreign matter. Clean
as necessary with a dry cloth or soft, dry brush.
■ Improper storage can result in unauthorized use, damage
to the chain saw and battery, and an increased risk of fire,
electric shock and other personal injury or property
damage.
– Engage the chain brake by moving the front hand
guard forward to and remove the battery from the
chain saw before storing.
– Never store the chain saw or charger with the battery
inserted.
– Store the chain saw and battery indoors in a dry,
secure place that cannot be accessed by children or
other unauthorized users.
– Never store the battery in the chain saw, in the
charger, in a metal container or in a container with
metal objects (e.g., paper clips, nails, coins, keys).
0458-007-8621-A
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11 Before Starting Work
NOTICE
Always release tension on the chain after finishing work. The
chain contracts as it cools down. If it is not slackened, it can
damage the drive shaft and bearings. Properly re-tension
the chain before using the saw again.
11 Before Starting Work
11.1 Preparing the Chain Saw for Operation
Before starting work:
► Fully charge the battery, @ 12.2.
► Mount the guide bar and saw chain, @ 16.2.1.
► Tension the chain, @ 16.3.
► Fill the chain oil tank, @ 16.4.2.
► Check the chain brake, @ 20.1.
► Check the controls for proper function and condition,
@ 20.2.
► Check the chain oil flow rate, @ 20.3.
12 Charging the Battery
WARNING
A typical household electric circuit is between 15 and 20
amps. A single STIHL AL 500 charger draws approximately
4.8 amps. A single AL 300 charger draws approximately
4.4 amps. To reduce the risk of fire from overloading an
electrical circuit:
► Ensure the electrical system is rated to withstand the
expected electrical draw before charging your battery.
► Charge multiple batteries one at a time or on separate
circuits, unless you know your circuit can handle the total
expected draw from multiple chargers.
WARNING
Since the charger heats up during the charging process, do
not operate the charger on a combustible surface or in a
location where combustible gases, liquids, vapors, dusts or
other materials and substances are present.
To set up the charger:
4
3
12.1 Setting up the Charger
WARNING
Read and follow the safety precautions on the battery and
charger and all warnings and instructions that accompany
those products. To reduce the risk of short circuit, which
could lead to electric shock, fire and explosion, make sure
the charger and its components are dry and not damaged;
operate the charger indoors at an appropriate ambient
temperature.
32
1
► Insert the plug (3) into a properly installed electrical
outlet (4) matching the voltage and electrical frequency
stated on the charger's rating plate.
The charger runs a self-test immediately after it is plugged
in. The charger LED (1) will glow green for about 1 second,
then it will glow red briefly before going out. Once the LED
goes out, the self-test is complete and the charger is ready
to charge the battery.
2
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12 Charging the Battery
3
2
1
0000-GXX-2680-A0
3
45
English
► Position the power supply cord (2) so that it will not be
stepped on, tripped over, come in contact with sharp
objects or moving parts or otherwise be subjected to
damage or stress.
12.2 Charging
WARNING
STIHL batteries contain safety features and devices which,
if damaged, may allow the battery to generate heat, rupture,
leak, ignite or explode. Never charge a malfunctioning,
damaged, cracked, leaking or deformed battery, or use a
charger that has been damaged. Never insert a wet battery
or battery adapter. Never use a wet charger. Follow all
product-specific warnings and instructions accompanying
your battery and charger.
A battery is not fully charged when it ships from the factory.
STIHL recommends that you fully charge the battery before
using it the first time.
Operate the charger only indoors, in dry rooms and within an
ambient temperature range of 41 °F to 104 °F (5 °C to
40 °C).
The battery heats up during operation of the power tool. If a
hot battery is connected to the charger, it may be necessary
for it to cool down before charging starts. The charging
process begins only after the battery has cooled down
sufficiently.
Charging time depends on a number of factors, including
battery condition and the ambient temperature. For a
complete list of approximate charging times, see
www.stihl.com/charging-times.
To charge an AR battery:
► Push the plug of the connecting cord (1) into the
socket (2) of the AP Adapter (3) until it stops.
► Push the AP Adapter into the charger (5) until it stops.
The LED on the charger (4) glows green when the battery
is charging.
The LEDs on the AR battery glow green and show the
state of charge.
When the LEDs on the battery turn off, the charging
process is complete and the charger will shut itself off. The
AP Adapter can be removed from the charger.
► Disconnect the power supply cord from the electrical
outlet when the charger is not in use for extended periods
of time.
► Charge STIHL AR backpack batteries only with genuine
STIHL AL 300 or AL 500 series chargers.
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1
2
3
4
0000-GXX-3918-A0
1
0000-GXX-1248-A0
20-40%
40-60%
60-80%
80-100%
0-20%
13 LED Diagnostics and Acoustic Signals
To charge an AP battery:
► Push the battery (2) into the charger (3) until it stops.
The LED on the charger glows green when the battery is
charging.
The LEDs (1) on the AP battery glow green and show the
state of charge.
When the LEDs on the battery go out, the charging
process is complete and the charger will shut itself off. The
AP battery can be removed from the charger.
► Disconnect the power supply cord from the electrical
outlet when the charger is not in use.
► Charge STIHL AP series batteries only with genuine
STIHL AL 101, AL 300 or AL 500 series chargers.
If all 4 LEDs flash red: the battery has a
malfunction and must be replaced. Do not
attempt to charge, use or store the battery.
13.1.2 Power Tool Status
The same LEDs on the battery will indicate the status of the
power tool.
If three LEDs glow red continuously: the power tool motor is
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch:
the power tool has an electrical malfunction. Do not operate
the power tool. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 26.
13.1.3 Charge Status
The LEDs on the battery also show the battery's state of
charge.
To determine the battery's state of charge:
13 LED Diagnostics and Acoustic Signals
13.1 STIHL AP Battery
13.1.1 Battery Status
Four LEDs show the status of the battery. These LEDs can
glow or flash green or red.
34
If one LED glow s red conti nuously: the battery is
either too hot or too cold. Allow the battery to
warm up or cool down gradually at an ambient
temperature of about 50 °F to 68 °F (10 °C to
20 °C).
► Press the button (1) on the battery.
The LEDs on the battery will glow or flash green for about
5 seconds and indicate the state of charge (see
illustration).
For example:
If four green LEDs glow continuously: full charge.
If one green LED is flashing: less than 20 % charge.
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13 LED Diagnostics and Acoustic Signals
1
2
3
.......
0000-GXX-3229-A1
0000-GXX-2673-A0
100 %0 %
English
13.2 STIHL AR Backpack Battery
13.2.1 Battery Status
Six LEDs and an acoustic signal indicate the status of the
battery.
1 A short beep
The acoustic signal works as it should.
2 Four or six (AR L) long beeps
The battery's charge is low. Recharge the battery.
3 Rapid succession of short beeps
There is a malfunction in the battery. The signal stops
automatically after a few seconds. Do not attempt to
charge, use or store the battery. Replace the battery.
13.2.2 Power Tool Status
When the battery is connected to the power tool, the same
LEDs on the battery will indicate the status of the power tool.
If three LEDs glow red continuously: the power tool motor is
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch:
the power tool has an electrical malfunction. Do not operate
the power tool. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 26.
13.2.3 Charge Status
The LEDs and acoustic signals on the battery also indicate
the battery's state of charge.
To determine the battery's state of charge:
These LEDs can glow or flash green or red.
If one LED glow s red conti nuously: the battery is
either too hot or too cold. Allow the battery to
warm up or cool down gradually at an ambient
temperature of about 50 °F to 68 °F (10 °C to
20 °C).
If the four right side LEDs flash red and a rapid
succession of several short beeps is emitted: the
► Be aware that your ability to hear the acoustic signal may
be reduced when wearing hearing protection.
0458-007-8621-A
battery has a malfunction and must be replaced.
Do not attempt to charge, use or store the
battery.
► Press the button (1) on the backpack battery.
A single short beep will be emitted. The LEDs on the battery
will glow or flash green for about 5 seconds and indicate the
state of charge (see illustration).
For example:
If six green LEDs glow continuously: full charge.
If one green LED is flashing and four long beeps are emitted:
less than 20 % charge.
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S
M
L
14 STIHL AR L Backpack Battery
14 STIHL AR L Backpack Battery
14.1 Adjusting the Battery Harness to Suit the
Operator’s Height
The battery harness can be set to positions S, M or L to suit
the operator’s height.
2
2
1
► Depress the locking tab (1) and push it in the direction of
the arrow.
► Remove the slide (2).
2
2
2
3
4
14.2 Positioning the Connecting Cord
WARNING
If using an AR series battery or AP series battery in a battery
bag with connecting cord always use a lift bucket for in-tree
use and maintenance. Do not climb in the tree.
WARNING
Place your left hand on the front handle and your right hand
on the control handle. Left-handers must follow these
instructions too. (See illustration, Chapter @ 6.5.2). Onehanded operation increases the risk of injury. Accordingly, to
reduce the risk of personal injury, run the connecting cord
through the guide on the shoulder strap on the opertor's right
side only. Never run the cord through the guides on the
shoulder strap on the operator's left side.
WARNING
To reduce the risk of injury from tripping or losing control of
the chain saw, always secure the connecting cord through
0000-GXX-A271-A0
the backpack guides and with the hook and eye fasteners as
described below. Position and secure the connecting cord
on your right side and so that it will not interfere with proper
working technique or your ability to maintain control of the
chain saw.
WARNING
Manage the cord to prevent it from contacting the saw chain
or catching on objects, which could cause you to lose
balance or control of the chain saw, resulting in serious
personal injury and property damage.
The connecting cord can be secured in different positions
and adjusted to suit the height and reach of the operator.
► Line up mark (3) with mark (4).
► Insert the slide (2).
► Pull the slide up (opposite the direction of the arrow).
It will engage with a click.
► Adjust the slide at the left and right shoulder straps to the
same position.
36
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14 STIHL AR L Backpack Battery
1
0000-GXX-7803-A0
3
4
0000-GXX-A276-A0
English
1
2
AB
2
2
2
The connecting cord can run through the guide (1) on the
shoulder strap (Illustration A), or along the back
plate (Illustration B). Secure the connecting cord to the
harness with the hook and eye fasteners (2) on the right side
of the operator's body, where the chain saw is held and
controlled. Do not allow the connecting cord to swing across
your body or hang at your side.
C
D
14.3 Putting on the Harness
WARNING
The operator must be able to remove the backpack battery
quickly in the event of an emergency. In an emergency,
open and remove the waist belt and chest strap quickly
before dropping the battery to the ground.
To ensure a proper fit:
0000-GXX-C577-A0
► Put the backpack battery on your back.
► Fasten and adjust the waist belt (2) so that it rests
comfortably but securely on your hips.
► Fasten the chest strap (1) and adjust it so that it fits
comfortably but securely across your chest.
The length of the connecting cord can be adjusted by
making a loop around the top (Illustration C) or on the side
(Illustration D) of the backpack battery with the hook and eye
fasteners.
► Position and secure the connecting cord so that it will not
interfere with proper working technique or your ability to
maintain control of the chain saw.
0458-007-8621-A
0000-GXX-9304-A0
► Adjust the harness straps so that the back padding fits
snugly and securely against your back.
► Always wear the battery harness over both shoulders.
37
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English
0000-GXX-2803-A1
D
C
15 STIHL AR Backpack Battery
► Thread the end of the waist belt through the loops (3)
and (4).
► To remove the harness, open the quick-release fasteners
on the waist belt and chest strap and loosen the harness
straps by lifting the sliding adjusters.
To help reduce the risk of injury in the event of an
emergency, practice quickly opening the fasteners on the
waist belt and chest strap, loosening the shoulder straps and
removing the battery.
NOTICE
To avoid damage, ease the battery to the ground when
practicing. Do not allow the battery to drop to the ground and
do not throw it.
15 STIHL AR Backpack Battery
15.1 Positioning and Adjusting the Connecting Cord
WARNING
If using an AR series battery or AP series battery in a battery
bag with connecting cord always use a lift bucket for in-tree
use and maintenance. Do not climb in the tree.
WARNING
Place your left hand on the front handle and your right hand
on the control handle. Left-handers must follow these
instructions too. (See illustration, Chapter @ 6.5.2). Onehanded operation increases the risk of injury. Accordingly, to
reduce the risk of personal injury, run the connecting cord
through the guide on the shoulder strap on the opertor's right
side only. Never run the cord through the guides on the
shoulder strap on the operator's left side.
on your right side and so that it will not interfere with proper
working technique or your ability to maintain control of the
chain saw.
WARNING
Manage the cord to prevent it from contacting the saw chain
or catching on objects, which could cause you to lose
balance or control of the chain saw, resulting in serious
personal injury and property damage.
The connecting cord can be secured in different positions
and adjusted to suit the height and reach of the operator.
A
1
1
B
1
1
1
1
The connecting cord can run through the guides on the
shoulder strap (Illustration A) or along the back
plate (Illustration B). Secure the connecting cord to the
backpack with the hook and eye fasteners (1) on the right
side of the operator's body, where the chain saw is held and
controlled. Do not allow the connecting cord to swing across
your body or hang at your side.
0000-GXX-7802-A0
WARNING
To reduce the risk of injury from tripping or losing control of
the chain saw, always secure the connecting cord through
the backpack guides and with the hook and eye fasteners as
described below. Position and secure the connecting cord
38
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16 Assembling the Chain Saw
0000-GXX-2815-A1
3
The length of the connecting cord can be adjusted by
making a loop around the top (Illustration C) or on the side
(Illustration D) of the backpack battery.
► Position and secure the connecting cord so that it will not
interfere with proper working technique or your ability to
maintain control of the chain saw.
15.2 Putting on the Harness
WARNING
To reduce the risk of personal injury, the operator must be
able to remove the backpack battery quickly in the event of
an emergency. In an emergency, open and remove the waist
belt and chest strap quickly before dropping the battery to
the ground.
To ensure a proper fit:
1
► Put the backpack battery on your back.
► Fasten and adjust the waist belt (2) so that it rests
comfortably but securely on your hips.
► Fasten the chest strap (1) and adjust it so that it fits
comfortably but securely across your chest.
English
► Adjust the harness straps so that the back padding fits
firmly and securely against your back.
► Thread the end of the waist belt through the loop (3).
► To remove the harness, open the quick-release fasteners
on the waist belt and chest strap and loosen the harness
straps by lifting the sliding adjusters.
To help reduce the risk of injury in the event of an
emergency, practice quickly opening the fasteners on the
waist belt and chest strap, loosening the shoulder straps and
removing the battery.
NOTICE
To avoid damage, ease the battery to the ground when
practicing. Do not allow the battery to drop to the ground and
do not throw it.
0000-GXX-7803-A0
16 Assembling the Chain Saw
16.1 Cutting Attachment
WARNING
If non-matching components are used, the cutting
attachment will be damaged beyond repair after a short
period of operation, and the chain could de-rail, resulting in
serious or fatal personal injury.
A cutting attachment consists of the chain, guide bar and
chain sprocket.
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1
16 Assembling the Chain Saw
1
2
2
a
3
t = a 2
– The pitch (t) of the chain (1), chain sprocket and, if using
a Rollomatic guide bar, the nose sprocket must match.
– The drive link gauge (2) of the chain must match the
groove width of the guide bar (3).
16.2 Mounting and Removing the Guide Bar and
Chain
16.2.1 Mounting the Guide Bar and Chain
WARNING
Make sure the battery is removed and the chain brake is
engaged before starting assembly. Never operate your
chain saw without a properly mounted guide bar and chain,
@ 6.5. Use only guide bar and chain combinations
expressly recommended or approved by STIHL, @ 6.4.
WARNING
The chain has many sharp cutters. If they contact your flesh,
they will cut you, even if the chain is not moving, @ 6.4.
Always wear heavy-duty work gloves when mounting or
otherwise handling the chain, @ 6.3.
0000-GXX-1445-A0
► Unscrew the nut (2).
► Remove the chain sprocket cover (1).
3
4
► Turn the side chain tensioner (3) counterclockwise until
the tensioning gear (4) sits flush against the housing.
0000-GXX-3113-A1
0000-GXX-3114-A1
To mount the guide bar and chain:
► Switch off the chain saw, @ 19.1.
► Engage the chain brake, @ 17.1.
► Remove the battery, @ 18.2.
40
► Position the chain in the groove of the guide bar, starting
at the tip.
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16 Assembling the Chain Saw
English
► Make sure that the cutters in the groove on the top side of
the guide bar face the tip of the bar. STIHL chains are
manufactured with arrows on the tie straps to help the
operator determine the proper direction of the chain.
Arrows on the tie straps on the top of the bar must point
toward the bar tip.
5
8
6
7
► Point the guide bar tip away from the chain sprocket (5).
► Place the chain around the chain sprocket.
► Slide the guide bar (8) over the collar screw (6). The head
of the collar screw must protrude into the oblong hole.
► Fit the pin of the tensioning gear in the hole (7) of the
guide bar.
► Disengage the chain brake, @ 17.2.
3
► Fit the sprocket cover on the saw so that it is flush with the
housing.
► Turn the nut clockwise until the chain sprocket cover is
firmly attached to the saw.
16.2.2 Removing the Guide Bar and Chain
► Unscrew the nut securing the chain sprocket cover.
► Remove the chain sprocket cover.
► Turn the side chain tensioner counterclockwise until it
stops and the chain is loose.
► Remove the guide bar and chain.
NOTICE
The top and bottom of the guide bar are symmetrical, and
the bar may be mounted with the printing facing up or down.
Flipping the guide bar each time the chain is sharpened or
0000-GXX-3115-A1
changed will help reduce uneven wear and improve its
service life.
16.3 Tensioning the Chain
WARNING
To reduce the risk of severe personal injury from chain
derailment, check chain tension frequently, @ 6.5. At
operating temperatures, the chain stretches and sags. New
chain tends to stretch more than used chain. Tension the
chain so that the drive links cannot come out of the groove
on the underside of the guide bar.
To properly tension the chain:
► Switch off the chain saw, @ 19.2.
► Engage the chain brake, @ 17.1.
► Remove the battery, @ 18.2.
► Direct the drive links into the groove of the guide bar
(arrow) while turning the side chain tensioner (3)
clockwise until it stops.
The guide bar and chain must be firmly and securely
mounted on the chain saw.
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16 Assembling the Chain Saw
NOTICE
Always release tension on the chain after finishing work. The
2
chain contracts as it cools down. If it is not slackened, it can
damage the drive shaft and bearings. Properly re-tension
the chain before using the saw again.
1
a
► Loosen the nut (2).
► Disengage the chain brake, @ 17.2.
► Lift the guide bar tip.
► Turn the side chain tensioner (1) clockwise to tighten the
chain.
The chain is properly adjusted when the distance (a)
between the underside of the guide bar and the chain is
within 0.04 in. (1 mm) and 0.08 in. (2 mm) and can still be
pulled easily along the bar by hand. Always wear gloves
when handling the chain.
► If the chain cannot be moved along the guide bar, it is too
tight.
– Reduce the tension by turning the side chain tensioner
counterclockwise until the chain can move freely along
the guide bar.
– Ensure that the drive links remain in the groove and that
the distance (a) between the underside of the guide bar
and the chain is within 0.04 in. (1 mm) and 0.08 in.
(2 mm).
► Once the chain is properly tensioned, lift the guide bar tip
and tighten the nut to secure the chain sprocket cover.
► Finally, ensure that the distance a between the underside
of the guide bar and the chain is within 0.04 in. (1 mm) and
0.08 in. (2 mm).
16.4 Lubricating the Saw Chain and Guide Bar
16.4.1 Bar and Chain Lubricant
0000-GXX-3203-A2
WARNING
Never operate your saw without bar and chain lubrication. If
the chain runs dry, the cutting attachment will be damaged
beyond repair within a very short time. A damaged chain
may break, resulting in severe or fatal personal injury.
Always check chain lubrication and the oil level in the tank
before starting work and periodically during work.
WARNING
Never use waste oil to lubricate your STIHL saw chain and
guide bar. Repeated contact with waste oil can cause skin
cancer. Moreover, waste oil is environmentally harmful.
Bar and chain oil lubricates and cools the rotating saw chain.
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.
► For automatic and reliable lubrication of the chain and
guide bar, use only an environmentally compatible quality
chain and bar lubricant. STIHL recommends using rapidly
biodegradable STIHL BioPlus.
NOTICE
Biodegradable chain oil must be resistant to aging, 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.
42
NOTICE
Waste oil does not have the necessary lubricating properties
and is unsuitable for chain lubrication.
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16 Assembling the Chain Saw
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4
5
English
16.4.2 Filling the Chain Oil Tank
Opening and Filling the Chain Oil Tank
To fill the chain oil tank:
► Switch off the chain saw, @ 19.2.
► Engage the chain brake, @ 17.1.
► Remove the battery, @ 18.2.
► Position the chain saw on a level surface with the oil filler
cap facing upwards.
► Clean the area around the oil filler cap with a slightly
dampened cloth.
► Flip up the grip and press the cap down firmly (1).
► Turn the cap slowly counter-clockwise (2) to the open
position (3). In the open position, the exterior positioning
mark (4) on the cap will line up with the symbol (5) on the
chain oil tank housing.
► Remove the cap and fill the tank with bar and chain oil.
► Take care not to spill bar and chain oil while refilling the
tank.
► Do not overfill the tank. Leave approximately 0.5 in.
(13 mm) of air space.
Closing
To close the tank:
1
4
1
2
► Raise the grip on the top of the cap until it is upright at a
90° angle. Insert the cap in the chain oil tank opening with
the exterior positioning mark (1) lined up with the open
symbol (2) on the chain oil tank housing.
► Using the grip, press the cap down firmly while turning it
clockwise to the closed position (approximately 1/4 turn).
In the closed position, the interior (4) and exterior (1)
positioning marks will align with the closed symbol (3) on
the chain oil tank housing.
► Fold the grip flush with the top of the cap and check for
tightness.
► If the grip does not lie completely flush with the cap or the
detent on the grip does not fit in the corresponding recess
in the tank opening, or if the cap is loose, the cap is not
properly seated and you must repeat the above steps.
16.4.3 Adjusting the Flow of Bar and Chain Oil
WARNING
Never operate your saw without bar and chain lubrication. If
the chain runs dry, the cutting attachment will be damaged
beyond repair within a very short time. A damaged chain
may break, resulting in severe or fatal personal injury.
Always check chain lubrication and the oil level in the tank
before starting work and periodically during work.
3
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0000-GXX-2947-A0
1
17 The Chain Brake
This chain saw is equipped with an adjustable oil pump. The
flow of bar and chain oil can be set for different guide bar
lengths, types of wood and working techniques.
To adjust the flow of bar and chain oil:
► Switch off the chain saw, @ 19.1.
► Remove the battery, @ 18.2.
► Engage the chain brake, @ 17.1.
The chain oil feed rate is suitable for most applications when
the oil flow adjusting screw (1) is in position E (Ematic).
To increase the flow:
► Turn the oil flow adjusting screw clockwise.
WARNING
No chain brake device prevents kickback. This device is
designed to reduce the risk of kickback injury, if activated, in
certain kickback situations. For the chain brake to remain in
good working order, it must be properly maintained, @ 10.
In the event of a kickback, the chain brake is designed to
engage if the left hand contacts the front hand guard and
pushes it forward.
The chain brake is also designed to be activated by the
inertia of the front hand guard if the forces are sufficiently
high. When the brake is activated by inertia, the hand guard
accelerates toward the bar nose, even if your hand is not
behind the hand guard.
Engaging the chain brake locks the chain. To manually
engage the chain brake:
1
Turn reduce the flow:
► Turn the oil flow adjusting screw counter-clockwise.
17 The Chain Brake
17.1 Engaging the Chain Brake
WARNING
The chain brake will operate only if it has been properly
maintained and the front hand guard has not been modified,
@ 7.2.
44
0000098214_001
► Push the front hand guard away from the front handle.
You will hear an audible click when the front hand guard
reaches the locked position. If a battery is inserted: The
CHAIN BRAKE LED (1) lights up.
17.2 Disengaging the Chain Brake
WARNING
Before disengaging the chain brake and switching on your
chain saw, be sure that the guide bar and saw chain are
clear of you and all other obstructions and objects, including
the ground, @ 6.5.
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18 Inserting and Removing the Battery
English
Disengaging the chain brake unlocks the chain. To
disengage the chain brake:
1
► Pull the front hand guard toward the front handle.
You will hear an audible click when the front hand guard
reaches the unlocked position. If a battery is inserted: The
CHAIN BRAKE LED (1) goes out. In this position, the chain
brake is disengaged and the saw can be switched on.
17.3 Maintaining the Chain Brake
WARNING
An improperly maintained chain brake may increase the time
needed to stop the saw chain after activation, or it may not
activate or stop the chain at all, @ 7.2. The chain brake is
subject to wear, depending on the amount of 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.
► Your chain saw should be returned to your authorized
STIHL servicing dealer for periodic inspection and
servicing of the brake system according to the following
schedule:
– Heavy Usage: every 3 months
– Part-Time Usage: every 6 months
– Occasional Usage: every 12 months
18 Inserting and Removing the Battery
18.1 Inserting the Battery
WARNING
Never use a malfunctioning, damaged, cracked, leaking or
deformed battery, @ 9. Use and store the battery only
within an ambient temperature range of 14 °F to 122 °F (- 10
°C to 50 °C), @ 9.
WARNING
0000098215_001
To reduce the risk of unintended activation, never store the
battery in the chain saw, @ 23.2.
To insert the battery:
► Engage the chain brake, @ 17.1.
1
2
► Place the chain saw on a level surface.
► Insert the battery (1) into the battery compartment (2) until
it stops.
The battery is properly inserted when you hear an audible
click and the battery is flush with the top of the housing. In
this position, there is electrical contact between the
battery and the chain saw.
Since a new battery is not fully charged, STIHL recommends
that you fully charge the battery before using it the first time,
@ 12.
0000-GXX-6242-A1
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19 Switching the Chain Saw On and Off
18.2 Removing the Battery
WARNING
To reduce the risk of severe personal injury from unintended
activation, always remove the battery before assembling,
transporting, adjusting, cleaning, servicing, maintaining or
storing the chain saw, and any other time it is not in use.
WARNING
Use care when ejecting the battery to prevent it from falling
and causing personal injury or property damage.
To remove the battery:
► Release the trigger switch.
► Place the chain saw on a level surface.
1
2
1
► Compress the locking levers (1) to eject the battery (2)
from the battery compartment.
NOTICE
Avoid exposing the battery to excessive heat or prolonged
periods of direct sunlight. Use or storage outside the
recommended ambient temperature range can reduce the
performance and/or service life of the battery.
19 Switching the Chain Saw On and Off
19.1 Switching On
WARNING
Never operate your chain saw if it is modified, damaged,
improperly adjusted or maintained, not completely and
securely assembled or not functioning properly, @ 16. To
reduce the risk of personal injury, always wear proper
clothing and protective apparel, including proper eye
protection, when operating your chain saw, @ 6.3.
Before switching on:
► Make sure you have a secure and firm footing.
► Stand upright.
► Always hold and operate the chain saw with your right
hand firmly on the control handle and your left hand firmly
on the front handle. Always hold the chain saw with two
hands in this manner, whether you are right-handed or
left-handed.
To switch the chain saw on:
► Disengage the chain brake, @ 17.2.
0000-GXX-6243-A1
3
► Depress and hold the trigger switch lockout (1).
► While holding the trigger switch lockout, press the
retaining button (2) with your thumb and release it.
► Squeeze the trigger switch (3) with your index finger.
The saw chain will start rotating.
2
1
4
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20 Checking the Chain Saw
English
You can also unlock the trigger switch by pressing the
retaining button and depressing the trigger switch lockout
within 5 seconds (as long as the "STATUS" LED is flashing).
Squeeze the trigger switch with your index finger to start the
saw chain.
The motor will not switch on unless the trigger switch lockout
and retaining button have been depressed and the trigger
switch has been squeezed.
If the trigger switch and the trigger switch lockout are
released, the "STATUS" LED will remain flashing for
approximately 1 second. As long as the "STATUS" LED is
flashing, the chain saw can again be switched on without
pressing the retaining button again.
The further the trigger switch is squeezed, the faster the saw
chain will rotate.
19.2 Switching Off
WARNING
The saw chain will continue to rotate for a short while after
the trigger switch is released. To avoid serious or fatal injury,
avoid contact with the moving saw chain. To reduce the risk
of personal injury from unintended activation or
unauthorized use, switch off the motor, ensure the chain has
stopped, engage the chain brake and remove the battery
before transporting or putting the chain saw down.
20 Checking the Chain Saw
20.1 Checking the Operation of the Chain Brake
WARNING
Operating the saw with a missing, damaged, modified or
improperly maintained chain brake increases the risk of
severe or fatal injury from kickback. Never attempt to modify
or disable the chain brake. Never operate a saw if the chain
brake has been modified or does not function properly. If you
detect a change in the operating characteristics of the chain
brake, have your saw serviced immediately by an authorized
STIHL servicing dealer.
Before starting work, check the operation of the chain brake:
► Disengage the chain brake, @ 17.2.
► Switch on the chain saw, @ 19.1.
► Engage the chain brake by pushing the front hand guard,
away from the front handle.
A properly functioning chain brake will stop the chain
within fractions of a second.
► If the chain brake fails to stop the chain within fractions of
a second, have the saw inspected and repaired by an
authorized STIHL servicing dealer.
To switch the chain saw off:
► Release the trigger switch and trigger switch lockout so
that the trigger switch springs back to the locked position.
In the locked position, activation of the trigger switch is
blocked by the trigger switch lockout. Activation of the
chain saw is also electronically blocked by the retaining
button once the "STATUS" LED stops flashing (after
approximately 5 seconds).
The saw chain will continue to rotate for a short time after the
trigger switch is released. Take care to avoid contact after
releasing the trigger switch and when setting down the chain
saw.
0458-007-8621-A
20.2 Testing the Controls
Before starting work, confirm that the trigger switch
lockout (1), retaining button (2) and trigger switch (3) are
undamaged and functioning properly:
To reduce the risk of serious or fatal injuries, keep hands,
feet and other parts of the body away from the chain. Do not
touch the saw chain while the battery is inserted. Never
touch moving chain with your hand or any part of your body,
@ 6.5.2. Keep bystanders out of the area while testing the
controls.
To test the controls:
► Remove the battery.
► Attempt to depress the trigger switch.
If the trigger switch can be depressed without first
depressing the trigger switch lockout, take the chain saw
to an authorized STIHL servicing dealer to be repaired
before use.
► Press down on the trigger switch lockout and retaining
button. Make sure they move freely and spring back into
place when released.
► Insert the battery.
► Hold the chain saw firmly with both hands, your left hand
on the front handle and your right hand on the control
handle. Depress and hold the trigger switch lockout, press
the retaining button with your thumb and squeeze the
trigger switch with your index finger.
The chain saw should switch on. If it does not, take the
chain saw to an authorized STIHL servicing dealer to be
repaired before use.
► Release the trigger switch.
The chain saw should switch off.
If the chain saw does not switch off after you release the
trigger switch, remove the battery and take the chain saw
to an authorized STIHL servicing dealer to be repaired
before use.
20.3 Testing Chain Lubrication
0000099044_001
WARNING
Never operate your saw without bar and chain lubrication. If
the chain runs dry, the cutting attachment will be damaged
beyond repair within a very short time. A damaged chain
may break, resulting in severe or fatal personal injury.
Always check chain lubrication and the oil level in the tank
before starting work and periodically during work.
To confirm that the chain oil is flowing properly:
► Insert the battery, @ 18.1.
► Disengage the chain brake, @ 17.2.
► Point the guide bar toward a bright surface.
► Switch on the chain saw, @ 19.1.
The chain should throw off a small amount of oil.
If the chain oil cannot be seen, check the oil level and refill
the tank as necessary.
► Test the chain lubrication again.
► If chain lubrication oil is still not visible, the lubrication
mechanism is not functioning. Take the saw to an
authorized STIHL servicing dealer to be repaired before
use.
48
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21 After Finishing Work
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21 After Finishing Work22 Transporting the Chain Saw and
Battery
English
21.1 Preparing for Transportation or Storage
WARNING
To reduce the risk of personal injury from unintended
activation or unauthorized use, switch off the chain saw,
engage the chain brake and remove the battery before
transporting the chain saw or putting it down. To reduce the
risk of injuries from the sharp cutters on the chain, always
cover the guide bar with the chain scabbard and be sure it
engages before transporting or storing the saw.
To prepare the saw for transportation or storage:
► Switch off the chain saw, @ 19.2.
► Engage the chain brake, @ 17.1.
► Remove the battery, @ 18.2.
► Release the chain brake and loosen the chain.
► Re-engage the chain brake.
► Slide a chain scabbard over the guide bar so that it covers
the entire guide bar and engages in place.
► If the battery or chain saw became wet during operation,
allow them to dry separately and completely before
charging or storing.
► Before using the saw, remember to re-tension the chain.
NOTICE
The chain contracts as it cools down. Failing to loosen the
chain after finishing work can damage the drive shaft and
bearings.
22.1 Chain Saw
When transporting the chain saw:
► Slide a chain scabbard over the guide bar so that it covers
the entire guide bar and engages in place.
► When transporting the saw by hand, hold it by the control
handle with the guide bar pointing backwards, opposite
the direction in which you are walking.
► When transporting the saw in a vehicle, cover the guide
bar with a chain scabbard and be sure it engages. Secure
and position the chain saw to prevent turnover, impact and
damage.
1
1
0458-007-8621-A
0000099302_001
The chainsaw can also be carried by attaching the ring (1) to
your waist belt or a rope.
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1
1
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23 Storing the Chain Saw and Battery
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.
22.2 Chain Scabbard
WARNING
Never use the rings on the chain scabbard to transport the
chain saw or secure it to your belt. The saw can slip out of
the scabbard, resulting in personal injury or property
damage. Secure the saw by the hinged carrying ring on the
chain saw housing.
When transporting the chain scabbard:
When transporting the battery:
► Place the battery in a non-metal container or carton and
secure it against impact or damage. Never transport the
battery in a metal or other container that is capable of
conducting electricity, or near metal objects (e.g., paper
clips, nails, coins, keys).
► If you are transporting the battery in a vehicle, secure it
and its container to prevent turnover, impact and damage.
STIHL batteries comply with the requirements set forth in
UN-Manual ST/SG/AC.10/11/Rev.7/Part III, Subsection
38.3.
Commercial air, vessel and ground transportation of lithium
ion cells and batteries is regulated. The battery is classified
as a UN 3480, Class 9, packaging group II product. Shipping
it, either as a complete tool or the battery, requires
compliance with all applicable shipping regulations. Check
with the ground, vessel, air cargo or passenger airline to
determine if transport is prohibited or subject to restrictions
or exemptions prior to shipping or travel.
Normally, no further conditions have to be met by the user in
order to transport STIHL batteries by road to the power tool's
operating site. Check and comply with any special
regulations that may apply to your situation.
For further information please go to
www.stihlusa.com/battery-transportation-safety.
► Transport the chain scabbard with one of its rings (1).
22.3 Battery
WARNING
To reduce the risk of a short circuit, which could lead to
electric shock, fire and explosion, never transport the battery
in a metal container or near metal objects (e.g., paper clips,
nails, coins, keys), @ 9.
50
23 Storing the Chain Saw and Battery
23.1 Chain Saw
WARNING
Store the chain saw indoors in a dry, secure place that
cannot be accessed by children or other unauthorized users,
@ 6.4. Never store the battery in the chain saw or charger.
Improper storage can result in unauthorized use and
damage to the chain saw, @ 6.4.
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24 Cleaning
English
When storing the saw for thirty days or longer:
► Remove any wood chips or debris from the battery
compartment.
► Remove the chain and guide bar.
► Clean and spray the guide bar with a resin solvent, such
as STIHL Resin Remover and Lubricant.
► Clean the saw, @ 24.
► Fill up the chain oil tank, @ 16.4.2.
► Store the saw indoors in a dry and secure location, out of
the reach of children and other unauthorized persons.
23.2 Battery
WARNING
To reduce the risk of a short circuit, which could lead to
electric shock, fire and explosion, never store the battery in
a metal container or near metal objects, @ 9. If the battery
is damp or wet, allow it to dry thoroughly before storing,
@ 9.
WARNING
Extreme temperatures can damage the battery and may also
cause the battery to generate heat, rupture, leak, ignite or
explode, resulting in severe or fatal personal injury or
property damage. Use and store the battery only within an
ambient temperature range of 14 °F to 122 °F (- 10 °C to
50 °C), @ 9. Never store the battery in direct sunlight or
inside a vehicle in hot weather, @ 9.
To properly store the battery:
► Remove the battery from the chain saw or the charger.
► Make sure the battery is dry and store it indoors in a dry
and secure location.
► Keep it out of the reach of children and other unauthorized
persons.
► Protect the battery against dampness and corrosive
agents such as garden chemicals and de-icing salts.
► Protect the battery from exposure to conductive liquids
such as salt water.
► For maximum battery life, store the battery at an ambient
temperature between 50 °F and 68 °F (10 °C and 20 °C)
with a charge between 40 % and 60 % (2 green LEDs).
► Do not leave spare batteries unused. Use them in rotation.
24 Cleaning
24.1 Cleaning the Chain Saw and Battery
WARNING
To reduce the risk of personal injury from unintended
activation, remove the battery and engage the chain brake
before carrying out any cleaning work, @ 10. Users of this
chain saw should carry out only the cleaning described in
this manual.
To clean the chain saw and battery:
► Clean the chain saw's polymer components with a slightly
dampened cloth. Do not use detergents or solvents. They
may damage the polymer components.
► Remove the sprocket cover and clean the area around the
chain sprocket with a slightly dampened cloth or resin
solvent, such as STIHL Resin Remover & Lubricant.
► Do not use a pressure washer to clean the chain saw or
otherwise spray it with water or other liquids.
► Keep the battery housing and guides free from foreign
matter and clean as necessary with a soft brush or soft,
dry cloth.
24.2 Cleaning the Guide Bar and Saw Chain
WARNING
To reduce the risk of personal injury from unintended
activation, remove the battery and engage the chain brake
before carrying out any cleaning work, @ 9. Users of this
chain saw should carry out only the cleaning described in
this manual.To help prevent injuries, always wear heavyduty work gloves when handling the chain.
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24 Cleaning
To properly clean the guide bar and chain:
► Remove the guide bar and the chain, @ 16.2.2.
3
1
2
► Clean the oil outlet duct (1), oil inlet bore (2) and groove
(3) with a brush, a slightly dampened cloth or resin
solvent, such as STIHL Resin Remover & Lubricant. Do
not use detergents.
► Clean the chain with a brush, a slightly dampened cloth or
resin solvent. Do not use detergents.
► Do not use a pressure washer to clean the guide bar or
chain or otherwise spray them with water or other liquids.
24.3 Cleaning the Air Filter
Very fine dust can collect in the air filter and block proper air
flow. The air filter must be cleaned with the STIHL special
cleaner or another cleaning agent with a pH value higher
than 12.
3
1
2
4
► Turn the screws (1) counterclockwise until the shroud (2)
can be removed.
0000-GXX-3212-A1
► Remove the shroud.
► Press the locking tab (3) and remove the air filter (4).
► Knock out the air filter or blow it clear with compressed air
from the inside outwards.
► If the air filter is damaged, replace it.
► Spray the outside and inside of the air filter with STIHL
special cleaner or a cleaning agent with a pH value higher
than 12.
► Allow STIHL special cleaner or cleaning agent to act for
10 minutes.
► Rinse the inside then the outside of the air filter under
running water. Never spray the air filter with a pressure
washer.
► Allow the air filter to air dry.
3
0000098922_001
To clean the air filter:
► Switch off the chain saw, @ 19.2.
► Engage the chain brake, @ 17.1.
► Remove the battery, @ 18.2.
52
4
5
6
0000098923_001
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25 Inspection and Maintenance
a
0000-GXX-1216-A0
English
► Position the air filter (4) so that the clip (5) engages in the
recess (6).
► Close the air filter.
The air filter audibly engages.
► Place the shroud in position.
► Tighten the screws (1).
WARNING
Cleaning agent may cause irritation if it contacts the skin or
eyes. Avoid contact. Wear suitable eye protection. Read and
follow all safety precautions that accompany the cleaning
agent. In case of contact with the skin: Wash affected areas
with plenty of water and soap. In case of contact with the
eyes: Rinse eyes with plenty of water for at least 15 minutes
and seek medical advice.
NOTICE
To reduce the risk of damage, never use a tool to install pry
out or re-insert the air filter.
NOTICE
Exposure to high temperatures and oil can damage the air
filter and reduce filtering efficiency. Allow the filter to air dry
away from external heat sources. Keep the filter away from
oil.
25 Inspection and Maintenance
Proper maintenance of the chain saw includes the following
activities:
► Clean the air filter every month of operation.
► Inspecting the chain sprocket periodically and having a
worn sprocket replaced by an authorized STIHL servicing
dealer.
► Inspecting the guide bar for proper groove depth and
spread and replacing the guide bar it if it shows signs of
excessive wear or damage.
► Periodically sharpening the chain, maintaining the depth
limiting guides at the appropriate height, and replacing the
saw chain when indicated by the relevant wear marks, or
when the chain is damaged or shows signs of excessive
wear.
► Having worn, missing or damaged safety labels replaced
by an authorized STIHL servicing dealer.
► Having the fan housing cleaned semi-annual by an
authorized STIHL servicing dealer.
If you make a warranty claim for a component which has not
been serviced or maintained properly, coverage may be
denied.
25.2 Inspecting and Maintaining the Chain Sprocket
► Switch off the chain saw, engage the chain brake and
remove the battery.
► Disengage the chain brake, @ 17.2.
► Remove the chain sprocket cover, saw chain and guide
bar.
25.1 Inspecting and Maintaining the Chain Saw
WARNING
To reduce the risk of personal injury from unintended
activation, remove the battery before inspecting the chain
saw or carrying out any maintenance, @ 10.1. Carry out
only the maintenance operations described in this manual.
There are no user-authorized repairs. STIHL recommends
that repair work be performed by authorized STIHL servicing
dealers.
0458-007-8621-A
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English
0000-GXX-1217-A0
1
2
3
3
0000-GXX-3212-A1
25 Inspection and Maintenance
► Check the chain sprocket cover for wear marks.
► If the wear marks are deeper than a = 0.020 in. (0.5 mm),
have the chain sprocket replaced.
STIHL recommends using genuine STIHL chain sprockets to
ensure optimal functioning of the chain brake.
Alternating between two chains helps reduce wear to the
chain sprocket.
25.3 Inspecting and Maintaining the Guide Bar
► Switch off the chain saw, engage the chain brake and
remove the battery.
► Remove the guide bar and saw chain, @ 16.2.2.
► Measure the depth of the guide bar groove in the area with
the greatest wear using the measuring tool on the file
gauge sold separately.
► Replace the guide bar if the measured depth is less than
the required minimum depths stated in @ 27.4.
► Check the spread of the guide bar groove with the
measuring tool on the file gauge.
► Replace the guide bar if the groove is narrowed, spread or
shows other signs of substantial wear or damage.
To maintain the guide bar:
► Flip the guide bar after each sharpening and each time the
chain is changed. This will help reduce uneven wear.
There is no "top" or "bottom" of the bar. It may be used in
either orientation, even though the printing on the bar may
be upside down.
► Clean the oil outlet duct (1), oil inlet bore (2) and groove
(3) with a brush, a slightly dampened cloth or resin
solvent, such as STIHL Resin Remover & Lubricant. Do
not use detergents.
► Periodically remove any metal burrs that develop along
the guide bar with a flat file or a STIHL guide bar dressing
tool.
► Replace the guide bar if the burrs cannot be filed or if the
guide bar becomes damaged.
25.4 Inspecting, Maintaining and Sharpening the
Saw Chain
WARNING
An improperly sharpened chain can increase the risk of
kickback and other reactive forces, resulting in severe
personal injury or death. For example, depth gauges that are
too low or cutters that are filed incorrectly can increase the
kickback tendency of the chain saw and can increase
kickback forces, making it more difficult to control the saw.
Always review and follow the sharpening angles and
dimensions recommended by STIHL when checking or
sharpening the chain.
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25 Inspection and Maintenance
1
0000-GXX-1218-A0
2
0000-GXX-1372-A0
1
2
3
4
a
0000-GXX-1446-A0
English
WARNING
Never use a dull or damaged chain. This leads to increased
physical strain, increased vibration load, unsatisfactory
cutting results and increased wear. If the chips from cutting
are fine, more like saw dust than wood chips, the chain likely
is dull.
► Switch off the chain saw, engage the chain brake and
remove the battery.
► Check the height of the depth gauge (1) with a STIHL file
gauge (2) matching the pitch of the chain.
► If the depth gauge protrudes higher than the file gauge,
file the depth gauge to the appropriate height.
► Work carefully. Do not file the depth gauge too low. A
depth gauge that is too low must be replaced or
sharpened by an authorized STIHL servicing dealer, as it
can increase the kickback tendency of the chain saw and
can increase kickback forces.
STIHL chain is manufactured with wear marks to help the
operator identify excessive wear. The wear marks depicted
above (1 - 4) must remain visible.
► Replace the chain if any wear marks are no longer visible.
► Check the 30° sharpening angle of the cutters with a
STIHL file gauge matching the pitch of the chain.
► If the sharpening angle is incorrect, file the cutters to a 30°
angle.
► If you are unable to achieve the proper angle, or suspect
you have not achieved the proper angle, have the chain
sharpened by an authorized STIHL servicing dealer.
An improperly filed chain can be very dangerous. It can
increase the potential for reactive forces, including kickback,
and also increase the magnitude of those reactive forces.
The chain pitch marking (a) is embossed in the area of the
depth gauge of each cutter.
To sharpen the chain:
► Switch off the chain saw, engage the chain brake and
remove the battery.
► Select a chain file with a diameter matching the pitch of
the chain.
Other files are unsuitable and can result in improperly filed
chain, which can increase the potential and force of
kickback and other reactive forces.
► Clamp the guide bar if necessary to make filing easier.
► To advance the chain, first disengage the chain brake,
@ 17.2.
► Use a file holder.
File holders have markings that indicate the proper
sharpening angle.
► File all the cutters with an identical angle. Two or three
strokes of the file are usually sufficient for simple
resharpening. Remove a little material with each stroke.
Sharpening at varying or inconsistent angles or heights
can be very dangerous and may result in rough or uneven
running of the chain and increased wear, even to the point
of chain breakage. It also can increase the tendency and
force of kickback and other reactive forces.
► Periodically rotate the file in order to avoid uneven wear.
► To remove a file burr from the cutter tooth, run the cutter
across a piece of hardwood.
► Check the sharpening angle with a file gauge.
All cutters must be of equal length and filed down to the
length of the shortest cutter. Otherwise, the tendency and
force of kickback and other reactive forces will increase.
STIHL recommends having your chain sharpened by an
authorized STIHL servicing dealer to reduce the risk of
severe or fatal injury from an improperly sharpened chain.
WARNING
Depth gauges that are too low increase the potential and
force of kickback and other reactive forces, which can
increase the risk of serious personal injury. Always maintain
the proper distance (a) between the depth gauge and the top
of the cutter.
a
► Guide the file horizontally at a right angle to the side
surface of the guide bar in accordance with the specified
angle.
► File only from the inside of the cutter outward.
► Lift the file on the backstroke. The file only sharpens on
the forward stroke.
► Do not file tie straps or drive links.
56
0000-GXX-1447-A0
The depth gauge determines the depth to which the cutter
penetrates the wood and thus the chip thickness.
A depth gauge that is too low will increase the kickback
tendency of the chain saw and can increase kickback forces.
A depth gauge that is too high will prevent the cutter from
entering the workpiece and will lead to poor cutting
performance. Always keep the required distance (a)
between depth gauge and cutting edge, @ 27.4.
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25 Inspection and Maintenance
0000-GXX-1220-A1
To properly lower the depth gauge:
► Lay the appropriate file gauge for the chain pitch on the
chain and press it against the cutter to be checked. If the
depth gauge protrudes past the file gauge, the depth
gauge must be filed down.
► File the depth gauge so that it is flush with the top of the
file gauge.
► Afterwards, remove the file gauge and file the leading
edge of the depth gauge parallel to the service mark.
When doing this, be careful not to further lower the highest
point of the depth gauge.
► Lay the file gauge on the chain to check the height of the
file gauge. The highest point of the depth gauge must be
flush with the top of the file gauge.
► After sharpening, clean the chain thoroughly, removing
any filings or grinding dust.
► Oil the chain thoroughly.
English
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26 Troubleshooting Guide
26.1 Chain Saw and Battery
Always remove the battery before carrying out any inspection, cleaning or maintenance.
ConditionLEDs on
Battery
Chain saw does not
start when switched
on.
1 LED flashes
green.
STIHL AR only:
Additionally,
four long beeps
are emitted.
1 LED glows
red.
4 LEDs flash
red.
STIHL AR only:
Additionally, a
rapid
succession of
short beeps is
emitted.
3 LEDs glow
red.
3 LEDs flash
red.
Possible CauseRemedy
No electrical contact
between chain saw
and battery.
Battery has low
charge.
Battery too hot / too
cold.
Malfunction in
battery.
Chain saw too hot.► Allow the chain saw to cool down.
Malfunction in chain
saw.
► Remove the battery, @ 18.2.
► Engage the chain brake, @ 17.1.
► Visually check the electrical contacts in the battery
compartment and on the battery.
► Reinsert the battery, @ 18.1.
► Charge the battery, @ 12.
► Allow the battery to warm up or cool down gradually at
ambient temperatures of about 50 °F to 68 °F (10 °C to
20 °C).
► Remove the battery and reinsert it, @ 18.
► Switch on the chain saw, @ 19.1.
► If the LEDs continue to flash, do not attempt to use.
The battery has a malfunction and must be replaced.
► Remove the battery and reinsert it, @ 18
► Switch on the chain saw, @ 19.1.
► If the LEDs still flash, do not attempt to use.
The chain saw has a malfunction and must be checked by
a servicing dealer.
26 Troubleshooting Guide
58
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26 Troubleshooting Guide
Always remove the battery before carrying out any inspection, cleaning or maintenance.
ConditionLEDs on
Possible CauseRemedy
Battery
Chain saw cuts out
during operation.
1 LED glows
red.
3 LEDs glow
Battery too hot / too
cold.
Chain saw too hot.
red.
Run-time is too short.Battery not fully
charged.
Useful life of battery
has been reached or
exceeded.
During sawing, the
wood smokes or
smells burnt.
The chain is dull or
improperly
sharpened.
Working technique is
improper or the saw
is being mis-used.
Insufficient bar and
chain oil.
Battery is not being
charged even though
1 LED glows
red.
Battery too hot / too
cold.
LED on charger
glows green.
"CHAIN OIL" LED
glows red.
Insufficient bar and
chain oil in the tank,
or the bar and chain
are not receiving oil.
"CHAIN OIL" LED
flash red.
The chain oil sensor
is damaged.
English
► Remove the battery, @ 18.2.
► Engage the chain brake, @ 17.1.
► Allow the chain saw and battery to cool down gradually at
ambient temperatures of about 50 °F to 68 °F (10 °C to
20 °C).
► Charge the battery, @ 12.
► Have the battery checked by an authorized STIHL servicing
dealer.
► Properly sharpen the chain, @ 10.
► Obtain instruction on proper working technique.
► Increase oil feed rate, @ 16.4.3.
► Have the chain lubrication mechanism checked by an
authorized STIHL servicing dealer.
► Allow the battery to warm up or cool down gradually at
ambient temperatures of about 50 °F to 68 °F (10 °C to
20 °C).
► Operate the charger only in enclosed, dry rooms at ambient
temperatures of 41 °F to 104 °F (5 °C to 40 °C).
► Filling the Chain Oil Tank, @ 16.4.2.
► If the LEDs still glows, have the oil filter checked by an
authorized STIHL servicing dealer.
► Have the chain oil sensor checked by an authorized STIHL
servicing dealer.
0458-007-8621-A
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English
27 Specifications
27 Specifications
27.1 STIHL MSA 220 T
– Approved battery types:
– STIHL AP 200, AP 300, AP, 300 S, AP 500
–STIHLAR series
When using a guide bar greater than 12" (30 cm), use of a
STIHL AR series battery or AP battery bag with connecting
cord is not authorized.
– Weight without battery, guide bar and saw chain:
5.95 lbs. (2.7 kg)
– Maximum oil tank volume: 7.4 oz. (0.22 l)
For technical information regarding the STIHL AP and
AR series batteries, see the product information
accompanying your battery.
For technical information regarding the STIHL AL 101, 300
and 500 series chargers, see the product information
accompanying your charger.
Batteries, chargers and other accessories sold separately.
Contact your authorized STIHL servicing dealer for pricing
and availability.
27.2 Chain Sprockets
The following chain sprockets are available for this model
chain saw:
– 6-tooth for 3/8" PICCO pitch
27.3 Minimum Groove Depth of Guide Bars
The minimum groove depth of a guide bar depends on the
pitch of the guide bar.
– Minimum groove depth for 3/8" PICCO pitch guide bars:
0.197 in. (5 mm)
27.4 Depth Gauge Setting
The depth gauge setting of a saw chain depends on the pitch
of the chain.
– Depth gauge setting for 3/8" PICCO pitch chains:
0.026 in. (0.65 mm)
27.5 Symbols on the Chain Saw
SymbolExplanation
VVolt
IPX4Protecting against spraying or splashing water
from all directions.
Power symbol on the retaining latch.
Engage and disengage the chain brake.
Chain oil tank
Maximum guide bar length
Direction of saw chain rotation
Oil Flow Adjusting Screw
Turn clockwise to tension the saw chain
STIHL products must not be disposed of in the
household trash, but only in accordance with local,
state and federal laws and regulations and as
provided in this manual, @ 30.
27.6 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
60
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27 Specifications
English
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 in your area for assistance.
27.7 FCC 15 Compliance Statement
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
– this device may not cause harmful interference.
– this device must accept any interference received,
including interference that may cause undesired
operation.
Note: This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to part
15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following
measures:
– reorient or relocate the receiving antenna,
– increase the separation between the equipment and
receiver,
– connect the equipment to an outlet on a circuit different
from that to which the receiver is connected,
– consult an authorized STIHL servicing dealer or an
experienced radio/TV technician for help.
Do not change or modify this product in any way unless
specifically allowed in this manual, since this could void your
authority to operate it.
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28 Combinations of Guide Bars and Saw Chains
28.1 STIHL MSA 220 T
PitchDrive link
gauge/Groove
width
3/8" P
1)
When using a guide bar greater than 12" (30 cm), use of
a STIHL AR series battery or AP battery bag with connecting
cord is not authorized.
The guide bar and chain combinations listed above meet the
25° computed kickback angle requirement of UL 62841-4-1
when used on this model chain saw with the matching chain
sprocket listed above.
Use replacement guide bars or chains only as listed above
or as listed elsewhere by STIHL as conforming with the 25°
computed kickback angle requirement of UL 62841-4-1
when used on this model chain saw.
The listed guide bars are green-labeled reduced kickback
STIHL guide bars. The listed chains are green-labeled low
kickback STIHL chains
Since new bar/chain combinations may be developed after
publication of this manual, ask your authorized STIHL
servicing dealer for the latest STIHL recommendations.
0.050 in.
(1.3 mm)
LengthGuide barNumber of teeth
of sprocket nose
12 in.
(30 cm)Rollomatic E /
14 in.
(35 cm)
16 in.
(40 cm)
1)
1)
Light 04
Rollomatic E Light /
Light P04
28 Combinations of Guide Bars and Saw Chains
Drive link
count
44
9
50
55
Saw chain
63 PM3 (Type 3636)
63 PS3 (Type 3616)
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29 Replacement Parts and Equipment
English
29 Replacement Parts and Equipment
29.1 Genuine STIHL Replacement Parts
STIHL recommends the use of genuine STIHL replacement
parts. Genuine STIHL parts can be identified by the STIHL
part number, the logo and, in some cases, by the
STIHL parts symbol . The symbol may appear alone on
small parts.
30 Disposal
30.1 Disposal of the Power Tool
STIHL products must not be thrown in household trash or
disposed of except as outlined in this manual.
► Take the power tool, accessories and packaging to an
approved disposal site for environmentally friendly
recycling.
► Contact your authorized STIHL
latest information on disposal and recycling.
30.2 Battery Recycling
servicing dealer for the
STIHL is committed to the development of products
that are environmentally responsible. This
commitment does not stop when the product leaves
the authorized STIHL servicing dealer. STIHL has
partnered with the RBRC (Rechargeable Battery
Recycling Corporation) to promote the collection and
recycling of spent STIHL lithium ion batteries in the
United States and Canada.
The RBRC seal indicates that STIHL has prepaid for battery
recycling. RBRC has a toll free phone number (1-800-822-
8837) that connects you to information on battery recycling
locations and information on battery disposal bans or
restrictions in your area. You can also return your spent
battery to any authorized STIHL servicing dealer for
recycling free of charge.
31 Limited Warranty
31.1 STIHL Incorporated Limited Warranty Policy
This product is sold subject to the STIHL Incorporated
Limited Warranty Policy, available at
www.stihlusa.com/warranty.html. It can also be obtained
from your authorized STIHL dealer or by calling
1-800-GO-STIHL (1-800-467-8445).
WARNING
Handle discharged/depleted batteries carefully. Even if
believed to be discharged, lithium ion batteries may never
totally discharge and still may deliver a dangerous short
circuit current. If damaged or exposed to extreme
temperatures, they may leak, generate heat, catch fire or
explode.
► Observe all federal, state and local disposal rules and
regulations.
► Contact your authorized STIHL servicing dealer for the
latest information on waste disposal.
► Recycle depleted batteries promptly.
► Keep batteries away from children. Do not disassemble
and do not dispose of in fire.
0458-007-8621-A
31.2 STIHL Incorporated CALIFORNIA ZERO
EMISSIONS CONTROL WARRANTY
STATEMENT
For California only
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board (CARB) and STIHL
Incorporated are pleased to explain the emissions control
system warranty on your 2022 and later small off-road zero
emission equipment motor.
In California, new equipment that uses small off-road zero
emission equipment motors must be designed, built, and
equipped to meet the State’s stringent anti-smog standards.
STIHL Incorporated must warrant the emissions control
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31 Limited Warranty
system on your small off-road zero emission equipment
motors for the periods of time listed below provided there
has been no abuse, neglect or improper maintenance of
your small off-road motor or equipment leading to the failure
of the emissions control system.
Your emissions control system may include parts such as
the zero emission equipment motor, motor controller, battery
and battery charger.
Where a warrantable condition exists, STIHL Incorporated
will repair your small off-road zero emission equipment
motor at no cost to you including diagnosis, parts, and labor.
MANUFACTURER’S WARRANTY RESPONSIBILITIES
The emissions control system on your small off-road
equipment motor is warranted for two years. If any emissionrelated part on your small off-road zero emission equipment
motor is defective, the part will be repaired or replaced by
STIHL Incorporated free of charge.
OWNER’S WARRANTY RESPONSIBILITIES
As the small off-road zero emission equipment motor owner,
you are responsible for the performance of the required
maintenance listed in your instruction manual. STIHL
Incorporated recommends that you retain all receipts
covering maintenance on your small off-road zero emission
equipment motor, but STIHL Incorporated cannot deny
warranty coverage solely for the lack of receipts or for your
failure to ensure the performance of all scheduled
maintenance.
As the small off-road zero emission equipment motor owner,
you should however be aware that STIHL Incorporated may
deny you warranty coverage if your small off-road zero
emission equipment motor or a part has failed due to abuse,
neglect, improper maintenance or unapproved
modifications.
You are responsible for presenting your small off-road zero
emission equipment motor to an authorized STIHL dealer as
soon as a problem exists. The warranty repairs should be
completed in a reasonable amount of time, not to exceed
30 days.
If you have any questions regarding your warranty rights and
responsibilities, please contact a STIHL customer service
representative at 1-800-467-8445 or you can write to
STIHL Incorporated
536 Viking Drive
P.O. Box 2015
Virginia Beach, VA
23452-2015
www.stihlusa.com
COVERAGE BY STIHL INCORPORATED
STIHL Incorporated warrants to the ultimate purchaser and
each subsequent purchaser that your small off-road zero
emission equipment motor is designed, built and equipped,
at the time of sale, to meet all applicable emission
regulations.
STIHL Incorporated also warrants to the initial purchaser
and each subsequent purchaser that your zero emission
equipment motor is free from defects in materials and
workmanship which cause your zero emission equipment
motor to fail to conform to applicable emission regulations
for a period of two years.
DEFECTS WARRANTY PERIOD
The warranty periods will begin on the date the utility zero
emission equipment motor is purchased by the initial
purchaser. If any emission-related part on your zero
emission equipment motor is defective, the part will be
replaced by STIHL Incorporated at no cost to the owner.
Add-on or modified parts that are not exempted by CARB
may not be used. The use of any non-exempted add-on or
modified parts will be grounds for disallowing a warranty
claim. STIHL Incorporated will not be liable to warrant
failures of warranted parts caused by the use of a nonexempted add-on or modified part.
The warranty on emissions-related parts will be interpreted
as follows:
1)Any warranted part that is not scheduled for replacement
as required maintenance in the written instructions
required in the Emission Warranty Parts List (see below)
must be warranted for the warranty period defined in
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32 Trademarks
English
Subsection COVERAGE BY STIHL INCORPORATED,
see above. If any such part fails during the period of
warranty coverage, it must be repaired or replaced by the
manufacturer according to Subsection (4) below. Any
such part repaired or replaced under the warranty must be
warranted for the remaining warranty period.
2)Any warranted part that is scheduled only for regular
inspection in the written instructions required by the
Emission Warranty parts List (see below) must be
warranted for the warranty period defined in Subsection
COVERAGE BY STIHL INCORPORATED, see above. A
statement in such written instructions to the effect of
“repair or replace as necessary” will not reduce the period
of warranty coverage. Any such part repaired or replaced
under warranty must be warranted for the remaining
period.
3)Any warranted part that is scheduled for replacement as
required maintenance in the written instructions required
by the Emission Warranty Parts List (see below) must be
warranted for the period of time prior to the first scheduled
replacement point for that part. If the part fails prior to the
first scheduled replacement, the part must be repaired or
replaced by the zero emission equipment motor
manufacturer according to Subsection (4) below. Any
such part repaired or replaced under warranty must be
warranted for the remainder of the period prior to the first
scheduled replacement point for the part.
4)Repair or replacement of any warranted part under the
warranty must be performed at a warranty station at no
charge to the owner.
5)Notwithstanding the provisions of Subsection (4) above,
warranty services or repairs will be provided at all
manufacturer distribution centers that are authorized to
service the subject zero emission equipment motor.
6)The owner must not be charged for diagnostic labor that
leads to the determination that a warranted part is in fact
defective, provided that such diagnostic work is performed
at a warranty station.
WARRANTY WORK
STIHL Incorporated shall remedy warranty defects at any
authorized STIHL dealer or warranty station. Any such work
shall be free of charge to the owner if it is determined that a
warranted part is defective. Any manufacturer approved or
equivalent replacement part may be used for any warranty
maintenance or repairs on emission-related parts and must
be provided without charge to the owner. STIHL
Incorporated is liable for damages to other zero emission
equipment motor components caused by the failure of a
warranted part still under warranty.
EMISSION WARRANTY PARTS LIST
Motor, Battery, Battery Charger, Motor Controller
WHERE TO MAKE A CLAIM FOR WARRANTY SERVICE
Bring the STIHL product to any authorized STIHL dealer.
LIMITATIONS
The repair or replacement of any warranted part otherwise
eligible for warranty coverage may excluded from such
warranty coverage if STIHL Incorporated demonstrates that
the STIHL product has been abused, neglected, or
improperly maintained, and that such abuse, neglect, or
improper maintenance was the direct cause of the need for
repair or replacement of the part. That notwithstanding, any
adjustment of a component that has a factory installed, and
properly operating, adjustment limiting device is still eligible
for warranty coverage.
32 Trademarks
32.1 Registered Trademarks
STIHL
®
FARM BOSS
iCademy
MAGNUM
®
®
®
0458-007-8621-A
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TM
STIHL
Injection
33 Addresses
The color combination
orange-grey (U.S.
Registrations #2,821,860;
#3,010,057, #3,010,058,
#3,400,477; and
#3,400,476)
AutoCut
YARD BOSS
STIHL ROLLOMATIC
WOOD BOSS
®
®
®
®
MasterWrench Service
MotoMix
OILOMATIC
ROCK BOSS
STIHL Cutquik
®
®
®
®
STIHL DUROMATIC
STIHL Quickstop
STIHL WOOD BOSS
TIMBERSPORTS
Este manual de instrucciones está protegido por derechos de propiedad intelectual. Todos los derechos reservados, especialmente los derechos de reproducción, traducción y procesamiento con sistemas electrónicos.
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Contenido
17 El freno de cadena
17.1 Accionamiento del freno de la cadena
17.2 Cómo soltar el freno de la cadena
17.3 Mantenimiento del freno de la cadena
18 Colocación y extracción de la batería.
18.1 Colocación de la batería
18.2 Extracción de la batería
19 Encendido y apagado de la motosierra
Gracias por su compra. La información que contiene este
manual lo ayudará a obtener el máximo rendimiento y
satisfacción de la motosierra STIHL, y a reducir el riesgo de
lesiones que supone su uso, si dicha información se
respeta.
Esta motosierra liviana equipada con un mango superior
está diseñada específicamente para los trabajos realizados
por arbolistas y otros profesionales del cuidado de árboles.
Para cortar a nivel del suelo use una motosierra tradicional
con mango trasero ancho, para un mayor control.
CONSERVE ESTE MANUAL
Dado que la motosierra es una herramienta
motorizada para cortar madera que funciona a
gran velocidad, es necesario tomar medidas
especiales de seguridad para reducir el riesgo
de lesiones.
Lea este manual de instrucciones
detenidamente antes de usar el equipo por
primera vez, y periódicamente de allí en
adelante. Respete todas las medidas de
seguridad. El uso descuidado o inadecuado de
la motosierra puede causar lesiones graves e
incluso mortales.
en un árbol a menos que haya recibido capacitación
profesional específica para ello, incluida la instrucción en el
uso del equipo de seguridad y otros equipos para trepar,
tales como los arneses, cuerdas, correas, herramientas
para escalar, ganchos, mosquetones, etc.
Respete todas las regulaciones, normas y
reglamentaciones de seguridad federales, estatales y
locales aplicables.
Nunca preste ni alquile su motosierra sin este manual de
instrucciones. Solamente permita que manejen la
motosierra las personas debidamente capacitadas y que
comprendan la información de este manual por completo.
Si necesita más información, o si no comprende alguna de
las instrucciones incluidas en este manual, visite
www.stihlusa.com o póngase en contacto con su
concesionario de servicio autorizado de STIHL.
2Acerca de este manual de
instrucciones
2.1Palabras identificadoras
Este manual contiene información sobre seguridad a la que
usted debe prestar especial atención. Dicha información se
indica con los siguientes símbolos y palabras
identificadoras:
Esta motosierra con mango superior ha
sido diseñada sólo para uso de
arbolistas profesionales. Los
operadores deben haber sido
capacitados en las técnicas especiales
de corte y de trabajo en el árbol mismo,
y encontrarse debidamente sujetos en
todo momento (por ejemplo: en un
canasto elevador o asegurados con
cuerdas y un arnés de seguridad).
ADVERTENCIA
Para usar esta motosierra en un árbol es necesario emplear
técnicas especiales de trabajo, las cuales deberán seguirse
para reducir el riesgo de lesiones personales. Nunca trabaje
0458-007-8621-A
PELIGRO
Identifica una situación de peligro que, de no evitarse,
causará lesiones graves o mortales.
ADVERTENCIA
Identifica una situación de peligro que, de no evitarse,
puede causar lesiones graves o mortales.
INDICACIÓN
Indica el riesgo de daños a la propiedad, incluyendo a la
máquina o sus componentes.
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3 Componentes importantes
2.2Símbolos en el texto
El siguiente símbolo tiene como finalidad ayudarlo a utilizar
este manual.
Hace referencia a un capítulo o subcapítulo designado
en este manual de instrucciones.
3Componentes importantes
3.1Motosierra y batería
12
#
7
3
8
1
2
15
4
5
6
16
17
18
10
9
11
24
23
22
21
1 Piñón de la cadena
Impulsa la cadena de aserrado.
2 Engranaje tensor
Bascula la espada y tensa o afloja la cadena de
aserrado.
19
20
25
#
13
14
26
27
3 Púa de tope
Ayuda a mantener la sierra fija contra la pieza de madera
durante el corte.
4 Gancho retenedor de la cadena
Ayuda a contener la cadena de aserrado y a reducir el
riesgo de que la cadena entre en contacto con el
operador si se rompe o se desprende de la espada.
5Espada
Sirve de soporte y de guía de la cadena de aserrado.
6 Cadena de aserrado
Herramienta de corte dentada formada por cortadores,
amarras y eslabones impulsores.
7Mira
Ayuda al operador a determinar la dirección de la caída
al realizar la entalladura de tala.
8 Cubierta del piñón de la cadena
Cubre el piñón de la cadena.
9Tuerca
Aprieta la cubierta del piñón de la cadena.
10 Funda de la cadena
Cubre la espada y la cadena de aserrado para reducir el
riesgo de lesiones causadas por un contacto accidental
durante el transporte o el almacenamiento.
11 Protector de la mano delantera
Ayuda a proteger la mano izquierda del operador de las
ramas y del contacto con la cadena de aserrado.
Funciona también como palanca de activación del freno
de la cadena.
12 Botón de retención
0000098211_001
Para encender la motosierra:
13 LED "CHAIN BRAKE" (freno de la cadena)
Al iluminarse, indica que el freno de la cadena está
accionado.
14 LED "STATUS" (estado)
Indica el estado operativo de la motosierra. Cuando el
LED parpadea, indica que la sierra está en modo de
espera y lista para usarse.
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4 Símbolos de seguridad en los productos
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15 Bloqueo del gatillo
Se debe presionar para permitir la activación del gatillo.
16 Mango de control
Mango para la mano derecha del operador.
17 Palanca de bloqueo
Asegura la batería en el compartimiento de la batería.
18 Compartimiento de la batería
Espacio en que se coloca la batería.
19 Filtro de aire
Filtra el aire que se aspira y entra en el motor.
20 Argolla
Para llevar la motosierra en el cinturón o mediante una
cuerda.
21 Tornillo de ajuste del flujo de aceite
Se usa para ajustar la cantidad de aceite que se aplica a
la cadena.
22 Tapa de llenado de aceite
Para cerrar el depósito de aceite.
23 Mango delantero
Mango para la mano izquierda del operador.
24 Gatillo
Enciende y apaga el motor.
25 Batería
Suministra energía eléctrica al motor.
26 Pulsador
Activa los LED de la batería.
27 LED de la batería
Indican el estado de carga de la batería y muestran
mensajes de error sobre posibles fallos de
funcionamiento de la batería o de la herramienta
motorizada.
3.2Características opcionales
Las características opcionales no están disponibles en
todos los modelos. La motosierra puede estar equipada con
las siguientes características:
1
0000098212_001
1 LED "CHAIN OIL" (aceite de la cadena)
Al iluminarse, indica que el depósito de aceite está vacío
o que la barra y la cadena no reciben aceite.
4Símbolos de seguridad en los
productos
4.1Motosierra
Los siguientes símbolos de seguridad están presentes en la
motosierra:
Para reducir el riesgo de lesiones, respete las
medidas de seguridad especificadas.
Lea y respete todas las medidas de seguridad
que se dan en el manual de instrucciones. Un
uso inadecuado puede provocar lesiones graves
o mortales, así como daños materiales.
# Placa de características
Contiene los datos eléctricos y el número de serie del
producto.
0458-007-8621-A
Para reducir el riesgo de lesiones personales
graves y la pérdida del oído, siempre use gafas
protectoras adecuadas, protectores en los oídos
y un casco protector aprobado, @ 6.3.
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4 Símbolos de seguridad en los productos
Para reducir el riesgo de sufrir lesiones, de ser
posible, vista con overoles, pantalones largos o
perneras que tengan almohadillas de material
resistente a cortaduras, según la aplicación
individual, @ 6.3.
Para reducir el riesgo de que el
operador o terceros sufran lesiones
graves o mortales causadas por la
pérdida de control, siempre sujete la
motosierra firmemente con ambas
manos cuando trabaje, @ 6.5.2.
Evite que la punta de la espada choque con
cualquier tipo de objeto. Eso puede hacer que la
espada salte de repente hacia arriba y hacia
atrás, lo que podría provocar lesiones graves o
mortales. Siempre maneje la sierra con las dos
manos, @ 7.
Para reducir el riesgo de lesiones o daños a la
propiedad debido a la activación inesperada,
quite la batería cuando la sierra no esté en uso,
@ 6.5.
Diseñada para ser usada únicamente
por arbolistas profesionales. Los
operadores deberán haber sido
capacitados en las técnicas especiales
de corte y trabajo en el árbol mismo y
encontrarse debidamente sujetos en
todo momento, @ 8.1.
4.2Batería
Los símbolos de seguridad siguientes se encuentran en la
batería de mochila serie AR y en la batería serie AP.
Para reducir el riesgo de lesiones, respete las
medidas de seguridad especificadas.
Lea y respete todas las precauciones de
seguridad dadas en el manual de instrucciones
de la batería y en el manual de la herramienta
STIHL que utiliza esta batería. El uso
inadecuado puede provocar lesiones personales
graves o mortales o daños a la propiedad.
Para reducir el riesgo de lesiones personales o
daños a la propiedad debido a incendios,
explosiones o quemaduras, incluidas las
quemaduras químicas, no desarme, aplaste,
deje caer, dañe o caliente la unidad a más de
100°C (212°F). Nunca la exponga al fuego ni la
incinere, @ 9.
Para reducir el riesgo de lesiones personales o
daños a la propiedad debido a un incendio, use
y almacene la batería solo dentro de un rango
de temperatura ambiente de -10°C a 50°C (14°F
a 122°F), @ 9.
Baterías tipo mochila AR 900, 1000, 2000, 3000
Para reducir el riesgo de lesiones personales o
daños a la propiedad causados por un
cortocircuito, un incendio o una explosión,
mantenga la unidad seca. Protéjala contra la
lluvia, el agua y las condiciones húmedas.
Nunca la sumerja en agua u otros líquidos,
@ 9.
Baterías tipo mochila AR L
Para reducir el riesgo de lesiones personales o
daños a la propiedad causados por un
cortocircuito, un incendio o una explosión,
mantenga la unidad seca. Nunca la sumerja en
agua u otros líquidos, @ 9.
Baterías serie AP
Para reducir el riesgo de lesiones personales o
daños a la propiedad causados por un
cortocircuito, un incendio o una explosión,
mantenga la unidad seca. Nunca la sumerja en
agua u otros líquidos, @ 9.
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5 Advertencias generales de seguridad para herramientas motorizadas
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Las baterías se venden por separado.
5Advertencias generales de seguridad
para herramientas motorizadas
5.1Introducción
Este capítulo contiene las advertencias e instrucciones de
seguridad generales prescriptas para herramientas
eléctricas motorizadas de mano y para motosierras
eléctricas. En los siguientes capítulos de este manual se
proporcionan otras advertencias e instrucciones
importantes.
ADVERTENCIA
■ Lea todas las advertencias de seguridad, instrucciones,
ilustraciones y especificaciones que se suministran con
esta herramienta motorizada. Si no se respetan todas las
instrucciones que se facilitan a continuación, se podrían
producir descargas eléctricas, incendios y lesiones
graves.
■ Conserve todas las advertencias e instrucciones, para
poder consultarlas en el futuro.
El término "herramienta motorizada" que se utiliza en las
advertencias se refiere a su herramienta con conexión a la
red eléctrica (con cable) o a batería (inalámbrica).
5.2Seguridad en la zona de trabajo
a)Mantenga la zona de trabajo limpia y bien iluminada. El
desorden y la oscuridad favorecen los accidentes.
b)No utilice las herramientas motorizadas en entornos
potencialmente explosivos, tales como aquellos en los
que hay líquidos, gases o polvos inflamables. Las
herramientas motorizadas producen chispas que podrían
encender el polvo o los vapores.
c) Asegúrese de que niños y terceras personas se
mantienen alejados de la herramienta motorizada
mientras la está usando. Cualquier distracción podría
hacerle perder el control sobre la herramienta.
5.3Seguridad eléctrica
a)El enchufe de la herramienta motorizada debe
corresponder con el tomacorriente. Nunca modifique el
enchufe en modo alguno. No utilice enchufes
adaptadores con herramientas motorizadas que tengan
clavija de puesta a tierra. El uso de enchufes no
modificados y de los tomacorrientes adecuados reduce el
riesgo de descargas eléctricas.
b)Evite que su cuerpo entre en contacto con superficies
puestas a tierra tales como tuberías, radiadores, estufas
y refrigeradores. Si su cuerpo está conectado con tierra,
existe un mayor riesgo de que sufra descargas eléctricas.
c) No exponga las herramientas motorizadas a la lluvia ni a
la humedad. Si entra agua en la herramienta motorizada,
aumenta el riesgo de que se produzcan descargas
eléctricas.
d)No maltrate el cordón eléctrico. Nunca tire del cordón
eléctrico para transportar, arrastrar o desenchufar la
herramienta motorizada. Mantenga el cordón protegido
del calor y alejado de aceites, bordes afilados y piezas
móviles. Si el cordón está dañado o retorcido, aumenta el
riesgo de que se produzcan descargas eléctricas.
e)Cuando use una herramienta motorizada a la intemperie,
utilice un cordón de extensión adecuado para el uso en
exteriores. Con un cordón apto para el uso en exteriores
se reduce el riesgo de descargas eléctricas.
f) Si resulta ineludible el uso de una herramienta motorizada
en un lugar húmedo, utilice un suministro de energía
eléctrica con dispositivo de corriente residual (RCD) o con
protección contra pérdidas a tierra (GFCI). El uso de un
RCD o GFCI reduce el riesgo de descargas eléctricas.
5.4Seguridad personal
a)Manténgase alerta, preste atención a lo que hace y
aplique el sentido común cuando use una herramienta
motorizada. No utilice una herramienta motorizada si se
nota cansado o si está bajo la influencia de drogas,
0458-007-8621-A
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5 Advertencias generales de seguridad para herramientas motorizadas
alcohol o medicamentos. Un descuido breve durante el
uso de una herramienta motorizada puede causar
lesiones personales graves.
b)Utilice equipos de protección personal. Protéjase los ojos
siempre. El uso de equipos protectores como mascarillas,
zapatos de seguridad antideslizantes, casco y protectores
de los oídos para lograr las condiciones de trabajo
apropiadas reduce el riesgo de sufrir lesiones personales.
c) Evite los arranques accidentales. Asegúrese de que el
interruptor está en la posición de apagado antes de
conectar la máquina a la fuente de energía o a la batería,
antes de levantarla y antes de cargarla. Cargar una
herramientas motorizadas con un dedo colocado sobre el
interruptor de encendido o conectar la alimentación de
herramientas que tienen el interruptor en la posición de
encendido favorece los accidentes.
d)Retire todas las llaves o herramientas de ajuste antes de
encender la herramienta motorizada. Si se deja una
herramienta o una llave colocada en un componente
giratorio de la herramienta motorizada, se pueden
producir lesiones personales.
e)No extienda los brazos más de lo necesario. Mantenga el
equilibrio y los pies bien apoyados en todo momento. Así,
podrá controlar mejor la herramienta motorizada si surge
cualquier imprevisto.
f) Use vestimenta adecuada. No utilice ropa suelta ni joyas.
Mantenga su cabello y su ropa alejados de las piezas
móviles. La ropa suelta, las joyas o el cabello largo
pueden quedar atrapados en los componentes en
movimiento.
g)Si cuenta con dispositivos para la conexión de equipos
extractores y recogedores de polvo, asegúrese de que
estos están conectados y de que se usan debidamente. El
uso de un equipo recogedor de polvo puede reducir los
peligros relacionados con el polvo.
h)No permita que la familiaridad adquirida con el uso
frecuente de las herramientas lo lleve a actuar con un
exceso de confianza y a no tener en cuenta los principios
de seguridad de la herramienta. Una acción descuidada
puede causar lesiones graves en una fracción de un
segundo.
5.5Uso y cuidado de la herramienta motorizada
a)No fuerce la herramienta motorizada. Utilice la
herramienta motorizada adecuada para el trabajo que va
a realizar. Si usa la herramienta motorizada correcta,
llevará a cabo la tarea mejor y con mayor seguridad, y al
ritmo para el cual fue diseñada.
b)No utilice la herramienta motorizada si no se puede
encender y apagar con el interruptor. Toda herramienta
motorizada que no pueda controlarse con su interruptor
es peligrosa y debe ser reparada.
c) Desconecte el enchufe de la fuente de alimentación o
retire el paquete de baterías (si es desmontable), de la
herramienta motorizada antes de hacer ajustes, cambiar
accesorios o almacenar la herramienta. Estas medidas
preventivas de seguridad reducen el riesgo de arrancar la
herramienta motorizada por accidente.
d)Guarde las herramientas motorizadas fuera del alcance
de los niños, y no permita que utilicen las herramientas
personas que no estén familiarizadas con ellas o con
estas instrucciones. En manos de personas no
capacitadas para usarlas, las herramientas motorizadas
son peligrosas.
e)Mantenga debidamente las herramientas motorizadas y
sus accesorios. Compruebe si los componentes móviles
están mal alineados o agarrotados, si hay roturas en
alguna pieza y otros aspectos que pudieran afectar al
funcionamiento de la herramienta eléctrica. Si hay daños,
envíe la herramienta eléctrica a reparación antes de
usarla. Muchos accidentes se deben a un mantenimiento
deficiente de las herramientas motorizadas.
f) Mantenga las herramientas de corte afiladas y limpias. Si
se han mantenido correctamente y están afiladas, las
herramientas de corte son menos propensas a atascarse
y más fáciles de controlar.
g)Utilice la herramienta motorizada, los accesorios, las
brocas, etc. tal como se indica en estas instrucciones,
teniendo en cuenta las condiciones de trabajo y el tipo de
tarea que va a realizar. El uso de una herramienta
motorizada para trabajos diferentes a aquellos para los
que fue diseñada puede producir situaciones peligrosas.
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h)Mantenga los mangos y las superficies de agarre secos,
limpios y sin aceite ni grasa. Las superficies de agarre y
los mangos resbaladizos dificultan la manipulación y el
control seguros de la herramienta en situaciones
inesperadas.
5.6Uso y cuidado de la herramienta con batería
a)Recárguela únicamente con el cargador especificado por
el fabricante. Un cargador que es adecuado para un tipo
de baterías puede crear un riesgo de incendio si se utiliza
con baterías de un tipo diferente.
b)Utilice las herramientas motorizadas únicamente con las
baterías especificadas para ellas. El uso de otras baterías
puede crear riesgos de lesiones o incendio.
c) Cuando no utilice las baterías, manténgalas alejadas de
objetos metálicos tales como presillas para papel,
monedas, llaves, clavos, tornillos u otros objetos
metálicos pequeños que pudieran establecer una
conexión entre los distintos terminales. Un cortocircuito
entre los terminales de batería puede causar quemaduras
o un incendio.
d)En condiciones de maltrato, podría salir líquido de la
batería; evite el contacto con el mismo. Si, a pesar de
todo, el contacto se produce, lave la zona afectada con
agua. Si el líquido entra en contacto con los ojos, busque
además atención médica. El líquido que sale de la batería
puede causar irritaciones y quemaduras.
e)No utilice una batería ni una herramienta a batería que
presente daños o haya sido modificada. Las baterías
dañadas o modificadas pueden tener un comportamiento
impredecible y que puede provocar incendios,
explosiones y lesiones.
f) No exponga nunca un paquete o herramienta con batería
al fuego ni a temperaturas excesivas. La exposición al
fuego o a temperaturas superiores a los 130 °C/ 265 °F
puede causar una explosión.
g)Respete todas las instrucciones relativas a la carga y no
cargue el paquete ni la herramienta con batería a
temperaturas fuera del intervalo que se especifica en las
instrucciones. Una carga incorrecta o realizada a
temperaturas fuera del intervalo especificado puede
dañar la batería y aumentar el riesgo de incendios.
5.7Mantenimiento
a)El mantenimiento de su herramienta motorizada deberá
realizarlo siempre un técnico calificado, utilizando piezas
de repuesto genuinas. Solo así queda garantizado que se
mantendrá intacta la seguridad de la herramienta
motorizada.
b)Nunca intente reparar baterías dañadas. Del
mantenimiento de las baterías deben encargarse
únicamente el fabricante o un proveedor de servicio
autorizado.
5.8Advertencias de seguridad generales para
motosierras
a)Mantenga todas las partes de su cuerpo alejadas de la
cadena cuando la motosierra esté en marcha. Antes de
arrancar la motosierra, asegúrese de que la cadena no
está tocando ningún objeto. Cualquier despiste breve
durante el uso de una motosierra puede provocar que su
ropa o algún miembro de su cuerpo quede atrapado por la
cadena de aserrado.
b)Siempre sujete la motosierra colocando la mano derecha
en el mango trasero y la izquierda en el mango delantero.
Si se sujeta la motosierra con las manos en la posición
inversa, aumenta el riesgo de sufrir lesiones personales,
por lo cual esto nunca debe hacerse.
c) Sujete la motosierra solamente por las superficies de
agarre aisladas, ya que la cadena de aserrado podría
entrar en contacto con cables ocultos. Si la cadena de
aserrado entra en contacto con un cable con corriente, los
componentes metálicos de la motosierra se podrían
cargar de corriente y provocar una descarga eléctrica al
operador.
d)Use gafas protectoras. Se recomienda además el uso de
equipos protectores adicionales para oídos, cabeza,
manos, piernas y pies. El uso de un equipo de protección
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adecuado reduce el riesgo de lesiones personales
causadas por desperdicios que salen despedidos o por un
contacto accidental con la cadena de aserrado.
e)No maneje una motosierra sobre una escalera, desde un
techo o desde cualquier punto de apoyo inestable.
Hacerlo podría causar lesiones personales graves.
f) Cuando se corta una rama que está bajo tensión, esté
atento al movimiento repentino de esta. Cuando se libera
la tensión de las fibras de la madera, la rama puede
golpear al operador o hacer que este pierda el control
sobre la motosierra.
g)Proceda con sumo cuidado cuando corte matorrales y
árboles jóvenes. Los materiales delgados pueden atorar
la cadena y salir despedidos hacia usted o hacer que
pierda el equilibrio.
h)Transporte la motosierra sujetándola por el mango de
control, con la motosierra parada y la cadena alejada de
su cuerpo. Cuando transporte o guarde la motosierra,
colóquele siempre la cubierta de la espada. Un manejo
adecuado de la motosierra reduce las probabilidades de
que se produzca un contacto accidental con la cadena en
movimiento.
i) Siga las instrucciones para lubricar la máquina, tensar la
cadena y cambiar la espada y la cadena. Una cadena
tensada o lubricada incorrectamente puede romperse o
aumentar el riesgo de contragolpe.
j) Corte únicamente madera. No use la motosierra con fines
distintos de los previstos. Por ejemplo: no use la
motosierra para cortar metales, plásticos, piedra o
materiales de construcción distintos de la madera. El uso
de la motosierra para trabajos para los cuales no ha sido
diseñada podría provocar situaciones peligrosas.
k) Siga todas las instrucciones cuando retire materiales
atascados y cuando guarde o dé mantenimiento a la
motosierra. Asegúrese de que el interruptor está en la
posición de apagado y de que se ha retirado la batería. La
activación inesperada de la motosierra mientras se están
retirando materiales atascados o al realizar el
mantenimiento, puede causar lesiones personales
graves.
l) Esta cadena no ha sido diseñada para talar árboles. Si se
usa la motosierra para trabajos para los cuales no ha sido
diseñada, se podrían causar lesiones o la muerte al
operador o a terceros.
m)No utilice la motosierra en un árbol, salvo que usted
tenga la capacitación específica para hacerlo. Usar una
motosierra en un árbol, sin tener la capacitación
adecuada, podría aumentar el riesgo de sufrir lesiones
personales graves.
5.9Causas del contragolpe y medidas de
prevención
a)Un contragolpe se puede producir cuando la nariz o la
punta de la espada choca contra algún objeto, o cuando
la cadena de aserrado se queda aprisionada en la madera
de la entalladura o de la ranura de corte.
b)En algunos casos, el choque de la punta puede causar
una reacción inversa repentina, lo que hace que la espada
salte hacia arriba y hacia atrás contra el operador.
c)El aprisionamiento de la cadena de aserrado a lo largo de
la parte superior de la espada puede empujar la espada
rápidamente hacia atrás contra el operador.
d)Cualquiera de estas reacciones puede provocar que
usted pierda el control de la sierra, lo cual puede resultar
en lesiones personales graves. No confíe su integridad
exclusivamente a los dispositivos de seguridad con que
cuenta su motosierra. Como usuario de una motosierra,
usted debe tomar varias medidas para evitar accidentes o
lesiones durante sus trabajos de corte.
e)El contragolpe es resultado de un mal uso de la
motosierra y/o de procedimientos de uso incorrectos, y se
puede evitar tomando las precauciones adecuadas, que
se dan a continuación:
1)Sujete la motosierra con firmeza, ciñendo los mangos
con los pulgares y con todos los dedos, colocando
ambas manos en la sierra y su cuerpo y brazos en una
posición en la que pueda resistir la fuerza de un
contragolpe. Si toma las medidas de precaución
correctas, el operador puede controlar la fuerza de un
contragolpe. No suelte la motosierra.
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2)No extienda los brazos más de lo necesario ni corte por
encima de la altura de sus hombros. Esto le ayudará a
evitar el contacto accidental de la punta, y a controlar
mejor la motosierra en situaciones inesperadas.
3)Use únicamente las espadas y cadenas de aserrado de
repuesto especificadas por el fabricante. Si se usan
espadas o cadenas de aserrado de repuesto
incorrectas, existe el riesgo de que la cadena se rompa
o de que se produzcan contragolpes.
4)Siga las instrucciones del fabricante para afilar y
mantener la cadena de aserrado. Si se reduce la altura
del calibrador de profundidad, puede aumentar el
contragolpe.
6INSTRUCCIONES IMPORTANTES
DE SEGURIDAD
6.1Uso previsto
ADVERTENCIA
■ Esta motosierra ha sido diseñada específicamente para
llevar a cabo trabajos de poda y cuidado de árboles. No
ha sido diseñada para talar árboles ni para cortar troncos
en el suelo. Si la motosierra se usa para trabajos para los
que no ha sido diseñada, podría provocar lesiones graves
o incluso la muerte.
■ Solo deben trabajar con esta motosierra personas que
conozcan las técnicas de corte y de trabajo específicas.
Dado que esta motosierra no está diseñada para
utilizarse en el suelo, este manual no incluye
instrucciones sobre la tala de árboles ni sobre el tronzado
de árboles caídos.
– Corte únicamente madera. No utilice la motosierra,
por ejemplo, para cortar metal, plástico o
mampostería.
– Lea y respete las instrucciones de manejo y uso que
se dan en este manual para conocer las
aplicaciones aprobadas y las técnicas de trabajo
recomendadas.
■ Observe con todas las regulaciones, las normas y las
reglamentaciones de seguridad federales, estatales y
locales aplicables.
– Cuando use una motosierra para trabajos de tala,
por ejemplo, consulte las regulaciones de la OSHA
sobre "trabajos de tala", Código 29 de los
Reglamentos Federales 1910.266.
■ Un uso indebido podría causar lesiones o daños
materiales, incluidos daños en la motosierra.
– Use la motosierra y la batería solo como describe en
este manual.
– Nunca intente modificar ni anular en modo alguno
los controles ni los dispositivos de seguridad de la
motosierra.
– Nunca use una motosierra que se haya modificado
o alterado, apartándola de su diseño original.
– Asegúrese de leer y respetar las advertencias y las
instrucciones de su batería y de su cargador antes
de iniciar la carga o de empezar a trabajar.
■ Esta herramienta motorizada puede alimentarse con una
batería de la serie STIHL AP. Como alternativa, se puede
alimentar con una batería de mochila de la gama
STIHL AR combinada con un adaptador AP. Para
conocer los tipos de baterías aprobados, consulte el
capítulo @ 27.1.
■ No está autorizado el uso de una batería de la serie AR ni
de una bolsa de batería AP con cable de conexión
mientras se trepa a un árbol, porque se podría enredar el
cable de conexión o aumentar el riesgo de lesiones por
pérdida de control o pérdida de equilibrio.
– Use una batería de la serie AR o una bolsa de
batería AP con cable de conexión, solo si está
trabajando en una plataforma elevadora. Nunca las
utilice mientras esté trepando un árbol.
Las baterías, los cargadores y otros accesorios se venden
por separado.
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6.2Operador
ADVERTENCIA
■ Trabajar con la motosierra puede ser extenuante. El
operador debe hallarse en buenas condiciones tanto
físicas como mentales. Para reducir el riesgo de lesiones
personales causadas por fatiga o pérdida del control:
– Consulte a su médico antes de usar la motosierra si
tiene una afección de salud que pueda agravarse
por el trabajo extenuante.
– No haga funcionar la motosierra si se encuentra
bajo la influencia de cualquier sustancia (drogas,
alcohol, medicamentos, etc.) que puedan afectar la
visión, el equilibrio, la destreza o el juicio.
– Esté alerta. No haga funcionar la motosierra si está
cansado. Tómese un descanso si se siente
cansado.
– No permita que menores utilicen la motosierra.
– No se debe permitir la proximidad de otros,
especialmente niños y animales, donde se esté
utilizando la motosierra.
■ El uso prolongado de una motosierra (u otras
herramientas motorizadas) que exponen al operador a
vibraciones puede causar la enfermedad de dedos
muertos (fenómeno de Raynaud) o el síndrome del túnel
carpiano. Estas afecciones reducen la capacidad de la
mano de sentir y regular la temperatura. Producen
entumecimiento y sensaciones de ardor, y también
pueden causar daños en los nervios y la circulación,
además de necrosis tisular.
■ Se desconocen todos los factores que contribuyen a la
enfermedad de Raynaud. El clima frío, el consumo de
tabaco y las enfermedades o afecciones físicas que
afectan los vasos sanguíneos y la circulación de la
sangre, además de los niveles altos de vibración y los
períodos largos de exposición a vibraciones se
mencionan como factores en el desarrollo de la
enfermedad de Raynaud.
■ Para reducir el riesgo de esta enfermedad y del síndrome
de túnel carpiano:
– Use guantes mientras trabaja y mantenga las manos
abrigadas.
– Mantenga la motosierra en buen estado. Una
motosierra con un mantenimiento inadecuado o con
componentes sueltos tendrá niveles de vibración
más altos.
– Mantenga afilada la cadena de aserrado. Una
cadena sin filo aumentará el tiempo de corte, y el
presionar una cadena roma a través de la madera
aumentará las vibraciones transmitidas a las manos.
– Agarre firmemente los mangos en todo momento,
pero no los apriete con fuerza constante y excesiva.
Tómese descansos frecuentes.
■ Estas precauciones no garantizan que no sufra de la
enfermedad de Raynaud o del síndrome de túnel
carpiano.
– Controle atentamente el estado de sus manos y
dedos si es un usuario regular.
– Consulte al médico de inmediato si aparece alguno
de los síntomas mencionados anteriormente.
■ De acuerdo con los conocimientos actuales de STIHL, el
motor eléctrico de la motosierra no debería interferir con
marcapasos.
– Sin embargo, las personas con marcapasos u otro
dispositivo médico implantado deben consultar a su
médico y al fabricante del dispositivo antes de
utilizar esta motosierra.
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6.3Equipos de protección personal
ADVERTENCIA
■ Para reducir el riesgo de lesiones:
– Siempre use ropa adecuada y equipos de
protección, incluidas gafas de seguridad
adecuadas.
■ Si el cabello, la ropa o los equipos de protección entran
en contacto con la cadena de aserrado en movimiento o
se enredan en los componentes de la sierra, podrían
provocar la pérdida del control sobre la máquina y
lesiones graves por cortes. Para reducir el riesgo de
lesiones graves:
– Use ropa resistente y ajustada que le
permita moverse con completa libertad.
– Use monos, pantalones largos o
chaparreras que tengan protectores de
material resistente a los cortes.
– Lleve una camisa o una chaqueta de manga larga.
– Evite el uso de chaquetas sueltas, bufandas,
corbatas, pantalones acampanados o con vueltas,
joyas o cualquier prenda que pueda engancharse en
ramas, en matorrales o en la cadena en movimiento.
– Sujétese el cabello por encima de los hombros antes
de empezar a trabajar.
■ Para reducir el riesgo de sufrir lesiones oculares:
– Siempre utilice gafas o anteojos
protectores bien ajustados que tengan
protecciones adecuadas en la parte
superior y en los laterales, que sean
resistentes a los impactos y que porten
la marca que indica que cumplen la
norma ANSI Z87 "+".
– Para reducir el riesgo de lesionarse la cara, STIHL
le recomienda que use también una careta o un
protector facial adecuado sobre las gafas o los
anteojos de seguridad.
■ Para reducir el riesgo de sufrir lesiones en la cabeza por
la caída de ramas o por el impacto de otros objetos
durante el trabajo:
– Use un casco protector aprobado.
– Los demás miembros de la cuadrilla que se
encuentren en la zona de trabajo deben llevar
también equipos de protección adecuados, incluido
un casco.
■ La exposición prolongada al ruido de la herramienta
motorizada puede provocar daños permanentes en los
oídos. Para reducir el riesgo de lesiones auditivas:
– Lleve amortiguadores del ruido (tapones
u orejeras).
– Los usuarios regulares deben someterse
con frecuencia a un control auditivo.
– Proceda con especial atención y
precaución cuando lleve puestas
protecciones auditivas. Su capacidad
para oír gritos, alarmas u otras
advertencias sonoras estará restringida.
■ Es muy importante tener una buena estabilidad. Como
ayuda para mantener los pies apoyados de forma segura
y para reducir el riesgo de lesiones durante el trabajo:
– Use botas resistentes con suela
antideslizante que sean adecuadas para
trepar a los árboles. Nunca use
sandalias, chanclas, zapatos que dejen
los dedos al descubierto ni calzado
similar.
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– Utilice en todo momento equipos
adecuados para protegerse contra las
caídas.
– Esta motosierra con mango está
diseñada para ser utilizada únicamente
por profesionales. Debe ser usada solo
para realizar trabajos desde el mismo
árbol, por personas debidamente
formadas que conozcan las técnicas de
corte y de trabajo específicas, y que
estén correctamente aseguradas en
todo momento (por ejemplo, en una
plataforma elevadora o mediante
cuerdas y un arnés de seguridad).
■ Para mejorar el agarre y para proteger mejor sus manos:
– Use guantes de trabajo gruesos
antideslizantes de cuero o de otro
material resistente al desgaste siempre
que manipule la motosierra o su cadena.
6.4Motosierra
ADVERTENCIA
■ Para reducir el riesgo de una descarga eléctrica:
– No sumerja la motosierra en agua ni en otros fluidos.
– Guarde la motosierra bajo techo.
■ La cadena de aserrado tiene muchos cortadores afilados.
El contacto con los cortadores puede causar laceraciones
graves, incluso cuando la cadena no está en movimiento.
Para reducir el riesgo de que se produzcan este tipo de
lesiones:
– Mantenga las manos, los pies y cualquier otra parte
del cuerpo lejos de la cadena.
– Use guantes de trabajo gruesos siempre que
manipule la motosierra o la cadena.
– Nunca toque una cadena que esté en movimiento
con las manos ni con ninguna otra parte del cuerpo.
– Cubra la espada con una funda y asegúrese de que
esté enganchada antes de transportar o guardar la
motosierra.
■ Las fuerzas reactivas, incluido el contragolpe, pueden ser
peligrosas.
– Preste especial atención a la sección "Contragolpe
y otras fuerzas reactivas" de este manual de
instrucciones @ 7.
■ Esta motosierra a batería ha sido diseñada
específicamente para llevar a cabo trabajos de poda y de
cuidado de árboles. Su uso para otros fines puede
aumentar el riesgo de lesiones y de daños materiales.
– No use esta motosierra para talar árboles ni para
cortar troncos en el suelo.
– Lea y respete las instrucciones de manejo de este
manual para conocer las aplicaciones aprobadas,
@ 8.
■ Para reducir el riesgo de que el operador o las personas
que se encuentran cerca sufran lesiones:
– Siempre suelte el gatillo, aplique el freno
de la cadena moviendo el protector de
mano delantero hacia y quite la
batería antes de armar, transportar,
ajustar, inspeccionar, limpiar, reparar,
mantener o guardar la motosierra, y
siempre que no esté en uso.
■ Aunque algunos accesorios no autorizados podrían
encajar en su motosierra STIHL, su uso podría resultar
extremadamente peligroso. Le recomendamos que utilice
únicamente accesorios suministrados por STIHL o
expresamente autorizados por STIHL para el uso con este
modelo específico.
– Use solo accesorios suministrados o expresamente
aprobados por STIHL.
– No modifique en modo alguno esta motosierra.
– Nunca intente modificar ni anular en modo alguno
los controles ni los dispositivos de seguridad de la
motosierra.
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– Nunca use una motosierra que se haya modificado
o alterado, apartándola de su diseño original.
■ Si la motosierra se cae o sufre un impacto fuerte similar a
una caída:
– Asegúrese de que no se ha dañado, de que está en
buenas condiciones y de que funciona
correctamente antes de reanudar el trabajo.
– Compruebe si los controles y los dispositivos de
seguridad, incluido el freno de la cadena, funcionan
correctamente, @ 20.1.
– Revise los LED y compruebe si hay mensajes de
error, @ 13.1.2.
– Asegúrese de que la batería no se ha dañado.
Nunca use ni cargue una batería que no funcione
correctamente o que esté dañada, agrietada,
deformada o pierda líquido.
– Nunca trabaje con una motosierra o con una batería
dañada o defectuosa. En caso de duda, encargue a
su concesionario autorizado de STIHL una revisión
de la motosierra y de la batería.
■ Si la motosierra o la batería están dañadas, no funcionan
correctamente, se han dejado a la intemperie o han caído
en agua o en otro líquido, sus componentes podrían no
funcionar debidamente, y los dispositivos de seguridad
podrían haber quedado inoperantes. Para reducir el
riesgo de lesiones y de daños materiales:
– Lleve la motosierra y la batería a su concesionario
de servicio autorizado de STIHL para que las
revisen antes de volver a usarlas.
■ Las piezas de repuesto auténticas de STIHL se han
diseñado específicamente para su motosierra, y
satisfacen los requisitos de seguridad y de rendimiento
correspondientes. El uso de piezas no autorizadas o no
aprobadas por STIHL puede provocar lesiones graves o
mortales, así como daños materiales.
– STIHL recomienda utilizar únicamente repuestos de
STIHL idénticos a las piezas originales.
6.5Uso de la motosierra
6.5.1Antes de usar
ADVERTENCIA
■ Un uso inadecuado o no autorizado puede causar
lesiones y daños materiales.
– Use la motosierra solo como se describe en este
manual de instrucciones.
■ Para el armado correcto de la espada y de la cadena:
– Lea y respete las instrucciones de montaje de la
espada y de la cadena, @ 16.2.1.
■ La cadena, la espada y el piñón deben coincidir unos con
otros en lo que respecta al calibre y al paso. Antes de
montarlos o de sustituirlos:
– Lea la información acerca de las combinaciones de
espadas y cadenas, @ 28.1.
– Lea y tenga en cuenta las instrucciones sobre
contragolpes y otras fuerzas reactivas, @ 7.
– Seleccione la espada más corta que cumpla con sus
necesidades de corte. Las espadas más largas
agregan peso y pueden ser más difíciles de
controlar.
■ El tensado adecuado de la cadena es extremadamente
importante para maximizar el rendimiento de corte y para
reducir el riesgo de que se produzcan lesiones a causa de
una rotura, de un descarrilamiento o de las fuerzas
reactivas de la cadena:
– Nunca corte si la cadena está floja. Si la cadena se
afloja durante el corte, apague el motor, aplique el
freno de la cadena y quite la batería de la motosierra
antes de ajustar la cadena. Nunca intente ajustar la
cadena con la batería colocada.
– Lea y respete las instrucciones de tensado de la
cadena, @ 16.3.
– Asegúrese siempre de que la cubierta del piñón de
la cadena queda firmemente apretada después de
tensar la cadena a fin de asegurar la espada. Nunca
arranque la motosierra si la cubierta del piñón de la
cadena está suelta o falta.
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– Compruebe la tensión de la cadena una vez más
después de ajustar la cubierta del piñón de la
cadena.
– Compruebe la tensión de la cadena periódicamente
de allí en adelante y en intervalos regulares
(siempre después de aplicar el freno de la cadena y
de quitar la batería).
■ El uso de una motosierra que se ha modificado, que está
dañada, mal ajustada o no se ha mantenido debidamente
puede provocar una avería y aumentar el riesgo de
lesiones graves o incluso mortales.
– Nunca utilice una motosierra que se haya
modificado, que esté dañada o mal mantenida o que
no se haya montado por completo y de forma
segura.
– Compruebe siempre si la motosierra está en buenas
condiciones y si funciona correctamente antes de
empezar a trabajar; preste especial atención al
botón de retención, al interruptor del gatillo, al
bloqueo del gatillo, al protector de mano delantero,
al freno de la cadena y al accesorio de corte.
– Asegúrese de que el gatillo y el bloqueo del gatillo
se mueven libremente y de que regresan siempre a
la posición de bloqueo cuando los suelta. El gatillo
no debe engancharse hasta que se pulse el bloqueo
del gatillo.
– Nunca intente modificar ni anular en modo alguno
los controles ni los dispositivos de seguridad.
– Si la sierra o cualquiera de sus piezas está dañada
o no funciona correctamente, llévelas a un
concesionario de servicio STIHL autorizado. No use
la sierra hasta que el problema se haya solucionado.
■ Antes de colocar la batería:
– Compruebe si hay corrosión o materias extrañas en
los contactos del compartimiento de la batería;
mantenga los contactos limpios.
– Nunca inserte ni use una batería que esté
defectuosa, dañada, agrietada o deformada, o que
pierda líquido.
– Lea y respete las instrucciones de encendido de la
motosierra, @ 19.1.
■ Para reducir el riesgo de lesiones graves o mortales
provocadas por la activación accidental:
– Asegúrese de que el gatillo y el bloqueo del gatillo
están en la posición de apagado cuando coloque la
batería.
– Evite el contacto con el gatillo y con su bloqueo
cuando sujete el mango de control de la motosierra.
– Suelte el gatillo y el bloqueo y accione el freno de la
cadena antes de sacar la batería.
– Quite la batería y accione el freno de la
cadena antes de montar, transportar,
ajustar, inspeccionar, limpiar, reparar o
guardar la motosierra y cuando no esté
en uso.
– Nunca deje la motosierra desatendida se está
colocada la batería.
– Nunca guarde la batería en la motosierra.
■ Antes de desconectar el freno de la cadena y de encender
la motosierra, dé los pasos siguientes para reducir el
riesgo de sufrir lesiones personales causadas por fuerzas
reactivas, por una pérdida de control o por un contacto
accidental con la cadena:
– Asegúrese de mantener la espada y la cadena
alejadas de su persona y de cualquier otro tipo de
obstáculo u objeto, incluido el suelo.
– Nunca arranque la motosierra si la espada está
dentro de una ranura de corte o entalla. Hacerlo
podría generar fuerzas reactivas y causar lesiones.
– Lea y respete las instrucciones de encendido de la
motosierra, @ 19.2.
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6.5.2Sujeción y control de la motosierra
ADVERTENCIA
■ Para reducir el riesgo de lesiones provocadas por un
arranque accidental cuando se sujeta el mango de control
o se carga la motosierra:
– Con los dedos de su mano derecha, ciña firmemente
el mango de control. Evite tocar el bloqueo del gatillo
o el propio gatillo.
■
■ Para sujetar con firmeza y controlar correctamente la
motosierra:
– Mantenga los mangos limpios y secos en todo
momento. Protéjalos de la humedad, del alquitrán,
del aceite, de la grasa y de la resina.
■ Para reducir el riesgo de lesiones graves o mortales para
el operador o los presentes por pérdida de control:
– Evite tocar cualquier objeto con el
cuadrante superior de la punta de la
espada. Podría producirse un
contragolpe.
– Siempre sujete la motosierra firmemente
con ambas manos mientras trabaje. Si la
máquina se maneja con una sola mano,
aumenta el riesgo de lesiones. Resulta
difícil controlar las fuerzas reactivas y
evitar que la espada y la cadena patinen
o reboten en la rama o en el tronco.
– Esto es aplicable incluso a las
motosierras compactas diseñadas para
el uso en espacios estrechos: el manejo
con una sola mano aumenta el riesgo de
que el operador pierda el control sobre la
máquina.
– Coloque la mano izquierda en el mango delantero y
la derecha, en el mango de control (como se
muestra en la ilustración). Las personas zurdas
también deben seguir estas instrucciones.
– Agarre firmemente los mangos con todos los dedos,
manteniéndolos sujetos entre los dedos índice y
0000-GXX-3214-A0
pulgar.
– Mantenga todas las partes de su cuerpo alejadas del
accesorio de corte siempre que la batería esté
colocada. Cuando realice el corte, colóquese a la
izquierda del mismo, fuera del plano de corte.
– Lea y respete todas las advertencias e instrucciones
del capítulo "Contragolpe y otras fuerzas reactivas",
@ 7.
■ Manejar la motosierra con una sola mano es
extremadamente peligroso. La operación con una sola
mano hace que sea más difícil resistir y absorber las
fuerzas reactivas (rechazo, tirón, contragolpe) sin perder
el control de la motosierra. También dificulta la
prevención del patinaje o del rebote de la espada y de la
cadena contra una rama o un tronco. Para reducir el
riesgo de lesiones graves o mortales para el operador o
los presentes por la pérdida de control:
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– Nunca intente manejar la motosierra con
una sola mano.
– Esto es aplicable incluso a las
motosierras compactas diseñadas para
el uso en espacios estrechos: el manejo
con una sola mano aumenta el riesgo de
que el operador pierda el control sobre la
máquina.
– Mantenga el accesorio de corte alejado de su
cuerpo siempre que la sierra esté funcionando.
Sitúese a la izquierda del corte mientras está
tronzando.
– Nunca trabaje en un árbol a menos que tenga
capacitación profesional específica para realizar
este tipo de trabajo, que disponga de los equipos de
seguridad adecuados (sistema correas y arnés,
plataforma elevadora u otros medios adecuados),
tenga las dos manos libres para manejar la
motosierra en un espacio estrecho y haya tomado
las medidas de precaución adecuadas para evitar
lesiones provocadas por la caída de ramas.
– El uso de accesorios para trepar, como púas o
soportes, requiere una capacitación especial.
Siempre asegure la motosierra con una cuerda
(atada a un anillo abisagrado), y engánchela a una
línea de seguridad. Acordone la zona de trabajo
para reducir el riesgo de que las ramas que caigan
provoquen lesiones a las personas cercanas o
daños materiales (p. ej., a los automóviles).
– Cuando asegure la motosierra a su cinturón o la
transporte con cuerdas, siempre use el anillo
abisagrado en la parte trasera de la carcasa de la
sierra, @ 22.1.
■ Para reducir el riesgo de que el operador o las personas
que se encuentren cerca sufran lesiones graves o
mortales causadas por una pérdida de control, asegúrese
de mantener el equilibrio y los pies bien apoyados en todo
momento:
– Tenga sumo cuidado cuando trabaje en terrenos
con mucha vegetación o húmedos. Para evitar
tropezarse, preste atención siempre a posibles
obstáculos ocultos, como tocones, raíces, piedras,
hoyos y zanjas.
– Proceda con extrema precaución cuando trabaje en
declives o en terrenos irregulares.
– Para no perder la estabilidad, aparte siempre las
ramas caídas, los matorrales y el material cortado.
Los troncos recientemente descortezados y otros
materiales pueden aumentar el peligro de
resbalones, tropezones o caídas.
– Proceda con mucho cuidado cuando corte ramas,
arbolitos y matorrales pequeños, ya que el material
fino y tierno puede enredarse en la cadena y salir
despedido hacia usted o hacer que pierda el
equilibrio.
■ Para reducir el riesgo de caídas:
– Mantenga la cadena en marcha bien alejada del
arnés y de las líneas de seguridad, para evitar cortar
estos equipos. Es fundamental que use una línea de
seguridad doble.
– Revise el estado del arnés, de las correas y de las
cuerdas antes de cada uso.
– Siempre saque la sierra del corte con la cadena en
marcha.
– Después de terminar un corte, active el freno de la
cadena para bloquear la cadena y apague el motor
antes de mover la sierra a otro punto del árbol.
■ Para reducir el riesgo de lesiones provocadas por una
pérdida de control:
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– No trabaje sobre una escalera de mano,
sobre un tejado ni sobre ningún otro
punto de apoyo que no sea seguro.
– Nunca ponga la motosierra en
funcionamiento a una altura superior a la
0000099343_001
de sus hombros.
– No extienda los brazos más de lo necesario.
Mantenga el equilibrio y los pies bien apoyados en
todo momento.
– Nunca arranque la motosierra si la espada está
dentro de una ranura de corte o entalla. Hacerlo
podría generar fuerzas reactivas y causar lesiones.
En estos casos, saque la espada del corte y vuelva
a introducirla con la máquina a velocidad máxima,
procurando no tocar ningún objeto con la punta de la
espada.
■ La púa de tope está diseñada para mejorar el control de
la motosierra durante el corte. Si trabaja sin la púa de
tope, la motosierra podría tirarlo bruscamente hacia
adelante. Esto podría causar una pérdida de control o, si
la punta de la espada golpea un objeto, un contragolpe.
– Para controlar mejor la motosierra, siempre trabaje
con la púa de tope.
■ Si se aplica presión a la motosierra al llegar al extremo del
corte, la espada y la cadena en movimiento pueden saltar
fuera de la ranura de corte o entalla, descontrolarse y
golpear al operador o algún objeto. Para reducir el riesgo
de lesiones:
– Tenga cuidado cuando se acerque al final de un
corte.
– Nunca ejerza presión sobre la motosierra cuando
esté llegando al final de un corte.
6.5.3Condiciones de trabajo
ADVERTENCIA
■ Utilice su motosierra únicamente a la luz del día y cuando
las condiciones de visibilidad sean buenas.
– Aplace el trabajo si hace mal tiempo o viento, si
llueve o si hay niebla.
– Nunca corte cerca de cables de alimentación
eléctrica.
■ Su motosierra es una máquina diseñada para ser
manejada por una sola persona.
– No permita que otras personas se acerquen a la
zona general de trabajo.
– No se debe permitir la entrada de espectadores,
especialmente niños, ni de animales en el área
donde se está utilizando el equipo.
– Apague el motor inmediatamente si se le aproxima
alguna persona.
■ Para reducir el riesgo de lesiones en los espectadores y
usuarios no autorizados:
– Nunca deje la motosierra desatendida si tiene la
batería colocada.
– Apague la motosierra, accione el freno de la cadena
y quite la batería durante las pausas de trabajo o
cualquier otro momento en que la motosierra no esté
en uso.
■ Las chispas que se generan durante el funcionamiento de
la motosierra pueden encender gases, líquidos, vapores,
polvos u otros materiales y sustancias combustibles. Para
reducir el riesgo de incendios y explosiones:
– Nunca utilice la motosierra en un lugar en el que
haya gases, líquidos, vapores, polvos u otros
materiales y sustancias combustibles.
– Lea y respete las recomendaciones de las
autoridades gubernamentales (por ejemplo, OSHA),
para identificar y evitar los peligros que representan
los gases, líquidos, vapores o polvos combustibles,
así como otros materiales y sustancias
combustibles.
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■ Si una cadena en movimiento choca contra una roca o
contra otro objeto sólido, se pueden producir chispas, lo
que, en determinadas circunstancias, puede encender
materiales inflamables. Entre los materiales inflamables
se incluyen, por ejemplo, la vegetación y los arbustos
secos, en particular cuando el tiempo es cálido y seco.
– Cuando exista riesgo de incendio leve o grave, no
use la motosierra cerca de materiales inflamables, ni
de vegetación o arbustos secos.
– Póngase en contacto con las autoridades locales de
control de incendios o con el servicio forestal de los
EE.UU. si tiene dudas sobre si las condiciones de la
vegetación y del clima son adecuadas para el uso de
una motosierra.
■ El uso de esta motosierra y el afilado de su cadena
pueden generar polvo, vapor de aceite y otras sustancias
que contienen productos químicos considerados como
causantes de enfermedades respiratorias, cáncer,
defectos congénitos y otros problemas reproductivos.
– Consulte a agencias gubernamentales como EPA,
OSHA, CARB y NIOSH e infórmese en otras fuentes
autorizadas sobre los materiales peligrosos si
desconoce los riesgos asociados con las sustancias
concretas que va a cortar o con las que va a trabajar.
■ La inhalación de determinados polvos, y especialmente
de polvos orgánicos como el moho o el polen, puede
provocar reacciones alérgicas o asmáticas en personas
sensibles a estas sustancias. La inhalación repetida o en
grandes cantidades de polvo o de otros contaminantes
suspendidos en el aire, y especialmente de las partículas
más pequeñas, puede causar enfermedades respiratorias
o de otro tipo. Esto incluye el polvo de madera,
especialmente de maderas duras, pero también el de
algunas maderas blandas como la del cedro rojo
occidental.
– Controle el polvo (como el aserrín), y las neblinas
(como la neblina de aceite causada por la
lubricación de la cadena) en su punto de origen
siempre que sea posible.
– Trabaje siempre con una cadena debidamente
afilada que produzca virutas de madera en vez de
polvo fino.
– En la medida de lo posible, utilice la motosierra de
modo que el viento o el propio proceso de trabajo
dirijan el polvo, la neblina o cualquier otra sustancia
particulada generada por la motosierra en dirección
contraria al operador.
– Si no es posible mantener el polvo y otras partículas
inhalables a niveles de fondo o aproximadamente de
fondo, siempre utilice una mascarilla aprobada por
NIOSH que reúna las características adecuadas
para las condiciones específicas de la zona de
trabajo. Siga las recomendaciones de las entidades
gubernamentales (por ejemplo, OSHA/NIOSH), y de
las asociaciones laborales y comerciales.
■ Si la vegetación que corta o el terreno de los alrededores
están cubiertos por una sustancia química, como
pesticidas o herbicidas:
– Lea y respete las instrucciones y las advertencias
que se adjuntan con la sustancia que se ha rociado
sobre la vegetación o sobre el suelo de los
alrededores.
■ La aspiración del polvo de asbesto es peligrosa y puede
causar lesiones graves o mortales, enfermedades
respiratorias o cáncer, incluido el mesotelioma. El uso y la
eliminación de productos que contienen asbesto están
estrictamente reglamentados por OSHA y EPA.
– No utilice la motosierra para cortar ni para alterar
productos de asbesto o que contengan asbesto.
– Si tiene razones para creer que está alterando
asbesto, suspenda el trabajo de inmediato y
póngase en contacto con las autoridades estatales y
locales competentes y/o con la EPA, con su
empresa o con el representante local de OSHA.
■ El contacto repetido con aceite usado puede causar
cáncer de piel, y su utilización puede ser perjudicial para
el medio ambiente.
– No utilice aceite residual para lubricar la espada ni
la cadena de la motosierra STIHL.
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6.5.4Instrucciones de manejo
ADVERTENCIA
■ Para reducir el riesgo de lesiones personales graves a
causa de arranques accidentales:
– No toque la cadena con la mano u otra parte del
cuerpo cuando la batería está colocada, aunque la
cadena no esté girando.
– Evite el contacto con el gatillo y su bloqueo cuando
sujete el mango de control de la motosierra.
■ La cadena continúa moviéndose por un tiempo breve
luego de haber soltado el gatillo de aceleración.
– Espere a que la cadena se detenga y aplique el
freno de la cadena antes de trasladar la motosierra
o de colocarla en el suelo.
■ En caso de emergencia:
– Apague el motor inmediatamente, accione el freno
de la cadena y quite la batería.
■ Su motosierra está equipada con un gancho retenedor
para la cadena. Está diseñado para reducir el riesgo de
lesiones personales en el caso de que la cadena se
desprenda o corte.
– Nunca ponga la motosierra en funcionamiento con
un retenedor de la cadena dañado o faltante.
■ El contacto con objetos extraños durante el serrado
puede hacer que la cadena se rompa o salga expulsada,
o hacer que la motosierra impulse escombros peligrosos
o se genere un contragolpe en la dirección del operador.
Para reducir el riesgo de lesiones personales graves o
fatales causadas por el contacto con objetos extraños:
– Inspeccione el árbol, el tronco o la rama antes de
cortarlos.
– Quite los objetos extraños para asegurarse de que
la madera no tenga materiales como clavos, púas,
cables o alambres.
– Antes de comenzar un corte, asegúrese de que
pueda completarse sin tocar los objetos o las
estructuras que se encuentran alrededor, como
vallas o mampostería.
■ Revise la cadena y la espada frecuente y periódicamente
durante el trabajo, o inmediatamente si hay cambios en
las características de corte:
– Apague el motor, accione el freno de la cadena y
quite la batería.
– Compruebe el estado y la tensión de la cadena.
Revise si la cadena o la espada están dañadas.
– Si no es posible tensar la cadena correctamente, o
si la sierra tiene componentes desgastados o
dañados, suspenda el trabajo de inmediato y lleve la
sierra a un concesionario autorizado de STIHL para
que efectúe la inspección, reparación o
mantenimiento.
PELIGRO
■ Para reducir el riesgo de electrocución:
– Nunca utilice esta motosierra cerca de
alambres o cables que puedan tener
corriente eléctrica.
– Nunca corte cerca de líneas eléctricas.
– No confíe en el aislamiento de la
motosierra contra descargas eléctricas.
7Contragolpe y otras fuerzas reactivas
7.1Fuerzas reactivas
ADVERTENCIA
■ Las fuerzas reactivas pueden ocurrir en cualquier
momento mientras la cadena está girando. Las fuerzas
reactivas pueden causar lesiones personales graves o la
muerte.
■ Las grandes fuerzas utilizadas para cortar madera
pueden cambiar de sentido y actuar contra el operador. Si
la cadena de aserrado en movimiento reduce su velocidad
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7 Contragolpe y otras fuerzas reactivas
o se detiene repentinamente al tocar un objeto sólido,
como un tronco o rama, o bien queda aprisionada, las
fuerzas reactivas podrían generarse de inmediato.
■ Esas fuerzas reactivas pueden causar la pérdida del
control, lo que a su vez puede causar lesiones graves o
mortales.
– Una buena comprensión de las causas de estas
fuerzas reactivas puede ayudarle a evitar el
elemento de sorpresa y la pérdida del control. Las
sorpresas repentinas contribuyen a los accidentes.
Las fuerzas reactivas más comunes son:
– Contragolpe
– Tirones
– Rechazo
7.2Contragolpe
7.2.1Contragolpe
en el cual ésta reduce su velocidad o se detiene. Esto
puede lanzar repentinamente la espada hacia arriba y
hacia atrás, principalmente en el plano de la espada,
pudiendo causar lesiones graves o mortales al operador.
■ El contragolpe puede ocurrir, por ejemplo, cuando la
cadena cerca del cuadrante superior de la punta de la
espada choca contra la madera o queda atascada al
cortar una rama, o si se la usa incorrectamente al
comenzar a penetrar o avanzar en el corte.
■ Cuanto mayor sea la fuerza del contragolpe, tanto más
difícil será para el operador controlar la sierra. Son
muchos los factores que influyen en cuando se producen
los contragolpes, así como en su intensidad. Estos
incluyen la velocidad de la cadena, la velocidad a la que
la espada y la cadena tocan el objeto, el ángulo de
contacto, el estado de la cadena y con qué velocidad esta
se ralentiza o detiene, entre otros factores.
– El tipo de espada y de cadena utilizadas es un factor
importante en la ocurrencia y la fuerza del
contragolpe. Algunos tipos de cadenas y espadas
de STIHL están diseñados para reducir las fuerzas
de contragolpe.
– STIHL recomienda el uso de espadas de
contragolpe reducido y cadenas de bajo
contragolpe.
ADVERTENCIA
El contragolpe se puede producir cuando la
cadena en movimiento toca un objeto sólido
cerca del cuadrante superior de la punta de la
espada o cuando queda atascada.
■ Cuando esto sucede, la energía que impulsa a la cadena
puede crear una fuerza que mueve a la motosierra en
sentido opuesto al movimiento de la cadena, en el punto
88
7.2.2Normas para el contragolpe de las motosierras
Se aplican la siguientes normas con respecto al
contragolpe:
– § 19.107 de UL 62841-4-1
– § 5.11 de ANSI/OPEI B175.1
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Estas normas, denominadas en lo sucesivo "normas sobre
el contragolpe de las motosierras" en este capítulo,
establecen determinados criterios de desempeño y diseño
relacionados con el contragolpe de la motosierra.
Para cumplir con las normas sobre el contragolpe, las
motosierras eléctricas:
– deberán, en su condición original, cumplir con un ángulo
de contragolpe derivado por computadora de 25° cuando
se utilizan determinados accesorios de corte; y
– deberán estar provistas con no menos de dos dispositivos
que reduzcan el riesgo de lesionarse por contragolpes,
tales como un freno de la cadena, una cadena con
contragolpe bajo, una espada de contragolpe reducido,
etc.
Los ángulos calculados por computadora para las
motosierras eléctricas se miden aplicando un programa
informático para probar los resultados de una máquina de
pruebas de contragolpes.
ADVERTENCIA
■ El cumplimiento de las normas sobre el contragolpe de la
motosierra no implica que la espada y la cadena de
aserrado rotarán a un máximo de 25º en un contragolpe
real.
■ Los ángulos calculados por computadora indicados en las
normas de la motosierra pueden no tener ninguna
relación con los ángulos reales de rotación de contragolpe
de la espada que pueden ocurrir en una situación real de
corte.
■ Los dispositivos diseñados para reducir el riesgo de
lesiones causadas por contragolpes pueden perder algo
de su eficiencia cuando no están en sus condiciones
originales, especialmente si no se han mantenido
correctamente.
– Lea y siga las precauciones e instrucciones de
seguridad en este manual.
– Al trabajar, siempre coloque la motosierra de modo
que su cuerpo esté alejado del accesorio de corte y
fuera del plano de corte.
– Siga las instrucciones de mantenimiento y servicio
contenidas en este manual.
■ Para que la motosierra cumpla con las normas sobre el
contragolpe de la motosierra, use solo los siguientes
accesorios de corte:
– Combinaciones de barra y cadena compatibles
enumeradas en “Combinaciones de barras guías y
cadenas de sierra”, @ 28;
– Otras combinaciones de espadas y cadenas de
repuesto que cumplan expresamente con las
normas para uso con la motosierra, o
– Cadena de repuesto designada como “cadena de
aserrado de bajo contragolpe”.
7.2.3Dispositivos para reducir el riesgo de lesiones por
contragolpe
El freno de cadena Quickstop de STIHL, las espadas de
contragolpe reducido con etiqueta verde de STIHL y las
cadenas de bajo contragolpe con etiqueta verde son todas
piezas diseñadas para reducir el riesgo de lesiones por
contragolpe.
1. Freno de cadena Quickstop de STIHL
0000-GXX-6266-A0
Si el freno de la cadena está en buen estado de
mantenimiento, hay dos formas de activarlo:
– Activación manual: si se produce un contragolpe, la
motosierra se eleva hacia el usuario con un movimiento
rotatorio en torno al mango delantero. El freno está
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diseñado para activarse si la mano izquierda entra en
contacto con el protector delantero, que es la palanca de
activación del freno, y lo empuja hacia delante.
– Activación por inercia: todas las motosierras de STIHL
están equipadas con un freno de la cadena Quickstop que
se activa por inercia. Si el impulso del contragolpe es
suficientemente fuerte, bastará para que el freno se
accione, aunque no se haya producido un contacto de la
mano del operador con el protector delantero.
ADVERTENCIA
■ Para reducir el riesgo de lesiones por contragolpe:
– Nunca use una sierra si el freno de la cadena no
funciona correctamente.
– Si tiene dudas, lleve la sierra a un concesionario de
servicio STIHL autorizado para que la revisen y la
reparen, si fuera necesario.
– No use la sierra hasta que el problema se haya
solucionado.
■ Cuando se produce un contragolpe, el protector de mano
delantero ayuda a proteger su mano izquierda, evitando
que entre en contacto con la cadena. Si se retira el
protector de mano delantero de una motosierra equipada
con un freno de cadena Quickstop, la protección quedará
mermada y se anulará la activación del freno de la
cadena, con lo que aumentará el riesgo de lesiones por
contragolpe.
– Nunca utilice su sierra si el protector de mano
delantero no funciona correctamente. Si falta el
protector de mano delantero, se perderán por
completo la activación manual y por inercia del freno
de la cadena.
– Nunca intente retirar, modificar ni desactivar el
protector de mano delantero ni ningún otro
componente del freno de la cadena.
■ Ni el Quickstop ni ningún otro dispositivo del freno de la
cadena previenen el contragolpe. Estos dispositivos están
diseñados para reducir el riesgo de lesiones, si están
activados, en determinadas situaciones de contragolpe.
Para reducir el riesgo de que se produzcan lesiones
personales graves o incluso mortales por un contragolpe:
– Respete siempre las instrucciones de este manual y
aplique una buena técnica de trabajo. Por ejemplo,
colóquese de modo que el accesorio de corte quede
alejado de su cuerpo siempre que el motor esté en
marcha. Párese a la izquierda del corte durante el
tronzado, fuera del plano de corte. Consulte el
capítulo “Sujeción y control de la motosierra”,
@ 6.5.2.
– Mantenga la mayor distancia posible, y nunca
menos de 25 grados, entre la espada y su cuerpo,
para asegurarse de que el Quickstop tendrá tiempo
suficiente para activarse y detener la cadena antes
de que esta entre en contacto con cualquier parte de
su cuerpo.
– Siga las otras advertencias que se proporcionan en
el capítulo @ 8.
■ De no recibir el mantenimiento adecuado, es posible que
el freno de la cadena necesite más tiempo para detener la
cadena una vez activado, o que ni siquiera se active. Para
que el Quickstop pueda reducir eficazmente el riesgo de
lesiones por contragolpe, se debe mantener debidamente
y estar en buenas condiciones de funcionamiento.
– Lea y respete las instrucciones sobre cómo accionar
y soltar el freno de la cadena, @ 17, y las
instrucciones sobre su mantenimiento y reparación,
@ 17.3.
2. Cadena de aserrado de bajo contragolpe y espadas de
contragolpe reducido
STIHL ofrece una gran variedad de espadas y cadenas. Las
espadas de contragolpe reducido de STIHL y las cadenas
de bajo contragolpe están diseñadas para reducir el riesgo
de lesiones por contragolpe. Otras cadenas están
diseñadas para ofrecer un mayor rendimiento de corte o
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facilitar el afilado, pero tienen una mayor tendencia al
contragolpe y pueden provocar contragolpes más violentos,
lo que dificulta el control de la motosierra.
STIHL ha desarrollado un sistema de colores para ayudarle
a identificar las espadas de contragolpe reducido y las
cadenas de bajo contragolpe de STIHL.
– Los accesorios de corte que tienen una etiqueta verde en
el embalaje están diseñados para reducir el riesgo de
lesiones por contragolpe.
– Las combinaciones de motosierras con una marca o
etiqueta verde con espadas y cadenas con etiqueta verde
cumplen los requisitos de ángulo de contragolpe
calculado de los estándares aplicables a motosierras,
siempre y cuando los productos conserven su estado
original.
– Los productos marcados con una etiqueta amarilla están
pensados para usuarios con necesidades de corte
extraordinarios que tengan experiencia y cuenten con una
formación específica sobre cómo reaccionar en caso de
contragolpe.
STIHL recomienda el uso de sus espadas de contragolpe
reducido marcadas con la etiqueta verde, de cadenas de
bajo contragolpe con etiqueta verde y de una motosierra
equipada con un freno de cadena Quickstop de STIHL, tanto
para los usuarios con experiencia como para aquellos que
carezcan de ella.
STIHL recomienda el uso de espadas y cadenas con
etiqueta verde en todas las motosierras. Para detalles, lea
su folleto "Información sobre barras y cadenas de STIHL".
Es posible que desde la publicación de esta documentación
se hayan desarrollado nuevas combinaciones de espada y
cadena que, combinadas con determinadas motosierras
eléctricas, cumplen también los estándares aplicables a las
motosierras.
ADVERTENCIA
■ El uso de combinaciones de espada y cadena que no
figuren en la lista del folleto "Información sobre espadas y
cadenas de STIHL" (o de otras combinaciones que no
cumplan los estándares aplicables a las motosierras),
puede contribuir a intensificar la fuerza del contragolpe,
así como la propensión de la sierra al contragolpe, y
aumentar, por tanto, el riesgo de lesiones por
contragolpe.
– Consulte a su concesionario de servicio STIHL
autorizado con qué espada y cadena debe combinar
su motosierra para reducir el riesgo de lesiones por
contragolpe.
■ Las espadas de contragolpe reducido y las cadenas de
bajo contragolpe no impiden el contragolpe, sino que
están diseñadas para reducir el riesgo de que un
contragolpe provoque lesiones.
– STIHL recomienda la utilización de espadas y
cadenas con etiqueta verde en todas las
motosierras, y a todos los usuarios.
■ Incluso aunque su sierra esté equipada con un freno
Quickstop, una espada de contragolpe reducido y/o una
cadena de bajo contragolpe, no logrará eliminar por
completo el riesgo de lesiones por contragolpe.
– Respete todas las medidas de seguridad que figuran
en este manual, para evitar situaciones de
contragolpe.
a. Cadena de aserrado de bajo contragolpe
Algunos tipos de cadena cuentan con componentes
especialmente diseñados para reducir la propensión al
contragolpe y la fuerza del mismo en caso de que se
produzca. STIHL ha desarrollado una cadena de bajo
contragolpe para su motosierra.
Una "cadena de bajo contragolpe" es una cadena que
cumplió los requisitos sobre reacción en caso de
contragolpe establecidos por el estándar ANSI/OPEI B175.1
cuando se la puso a prueba de acuerdo con las condiciones
que se especifican en el ANSI/OPEI B175.1.
ADVERTENCIA
■ Algunas cadenas de bajo contragolpe no han sido
probadas con todas las combinaciones de motosierra y
espada. Existen posibles combinaciones de sierra,
espada y cadena de bajo contragolpe que no cuentan con
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un certificado específico de que cumplen con el ángulo de
25° calculado por computadora, estipulado en los
estándares para motosierras.
– STIHL recomienda la utilización de espadas y
cadenas con etiqueta verde en todas las
motosierras, y a todos los usuarios.
– Consulte el folleto "Información sobre espadas y
cadenas de STIHL" para conocer las combinaciones
de espada y cadena adecuadas para su sierra.
– Consulte a su concesionario de servicio STIHL
autorizado con qué espada y cadena debe combinar
su motosierra para reducir el riesgo de lesiones por
contragolpe.
■ Una cadena roma o mal afilada puede reducir o anular la
eficacia de las funciones del diseño previstas para reducir
la fuerza de contragolpe y la propensión a que este se
produzca. Si los calibradores de profundidad se bajan o
se afilan incorrectamente, o si se cambia la forma de los
cortadores, pueden aumentar el riesgo y la violencia del
contragolpe.
– Asegúrese de cortar siempre con una cadena
debidamente afilada.
– Lea y siga las instrucciones sobre el afilado de la
cadena, @ 25.
■ Cualquier motosierra montada con una guía de arco
puede ser muy peligrosa. Con una guía de arco, el riesgo
de contragolpe aumenta, porque aumenta la zona de
contacto de contragolpe y porque el diseño de las guías
de arco coloca la parte superior de la espada más cerca
del cuerpo de usuario. El uso de una cadena de bajo
contragolpe no reducirá de modo significativo el riesgo de
contragolpe si se trabaja con una guía de arco.
– Nunca monte una guía de arco en una motosierra de
STIHL.
b. Espadas de contragolpe reducido
Las espadas de contragolpe reducido con etiqueta verde de
STIHL están diseñadas para reducir el riesgo de lesiones
por contragolpe cuando se usan en combinación con las
cadenas de bajo contragolpe con etiqueta verde de STIHL.
ADVERTENCIA
■ Si se usan con otras cadenas con un comportamiento
más agresivo, las espadas de contragolpe reducido con
etiqueta verde pueden ser menos eficaces a la hora de
reducir los contragolpes.
– STIHL recomienda la utilización de espadas y
cadenas con etiqueta verde en todas las
motosierras, y a todos los usuarios.
■ Para garantizar un equilibrio adecuado y para cumplir los
estándares aplicables a las motosierras:
– Use solo las longitudes de espada que figuran en
este manual, @ 28.
7.2.4Para evitar el contragolpe
La mejor protección contra lesiones personales como
resultado de un contragolpe es evitar las situaciones de
contragolpe:
1)Sostenga la motosierra firmemente y con ambas manos,
y mantenga un agarre seguro con la mano derecha en el
mango de control y la mano izquierda en el mango
delantero. Agarre firmemente, envolviendo con los
pulgares y los otros dedos los mangos de la motosierra.
No la suelte.
2)Cerciórese de que la zona donde está cortando no tenga
ningún obstáculo.
3)Sea consciente de la ubicación de la punta de la espada
en todo momento. Nunca deje que la punta de la espada
haga contacto accidentalmente con ningún objeto. No
corte ramas con la punta de la espada. Preste especial
atención al trabajar cerca de vallas de alambre y al cortar
ramas pequeñas y duras, matorrales pequeños y arbolitos
que puedan quedar enredados fácilmente en la cadena de
aserrado.
4)No trate de llegar más lejos de lo debido.
5)No corte a una altura superior a la de los hombros.
6)Empiece a cortar y continúe trabajando a máxima
aceleración.
7)Corte solamente un tronco a la vez.
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8)Tenga sumo cuidado cuando vuelva a entrar a un corte
previamente iniciado.
9)No intente cortar por penetración de la sierra si no tiene
experiencia en ese tipo de corte.
10)Esté atento al desplazamiento del tronco o a la
intervención de otras fuerzas que puedan causar el cierre
del corte y el aprisionamiento de la cadena de aserrado.
11)Dele mantenimiento adecuado a la cadena de aserrado.
Siempre corte con una cadena de aserrado bien afilada y
correctamente tensada.
12)Sitúese a un lado de la trayectoria de corte de la
motosierra.
13)Use únicamente las espadas y cadenas de repuesto
especificadas por STIHL, o unas equivalentes.
7.3Tirones
■ El tirón frecuentemente ocurre cuando la púa de tope de
la sierra no está firmemente sujeta contra el árbol o rama,
y cuando la cadena no está girando a velocidad máxima
antes de hacer contacto con la madera.
■ Para reducir el riesgo de tirón:
– Corte con una cadena afilada y con la tensión
adecuada.
– Siempre empiece el corte con la cadena girando a
velocidad máxima y con la púa de tope en contacto
con la madera.
– Use cuñas para abrir la entalla o el corte, donde sea
posible.
– Tenga sumo cuidado al cortar arbolitos y matorrales
pequeños que puedan enredarse fácilmente en la
cadena, rebotar contra usted o hacerle perder el
equilibrio.
7.4Rechazo
ADVERTENCIA
■ El tirón se produce cuando la cadena en la parte inferior
de la espada se detiene repentinamente o reduce la
velocidad significativamente por estar aprisionada,
quedar atrapada o entrar en contacto con algún objeto
extraño en la madera. La reacción de la cadena tira de la
motosierra hacia delante y puede hacer que el operador
pierda el control, lo cual, a su vez, podría ocasionar
lesiones graves o mortales. Si la punta entra en contacto
con un objeto, puede producirse un contragolpe.
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ADVERTENCIA
■ El rechazo se produce cuando la cadena en la parte
superior de la espada se detiene de repente o reduce la
velocidad significativamente por estar aprisionada,
quedar atrapada o entrar en contacto con algún objeto
extraño en la madera. La reacción de la cadena puede
hacer que la motosierra se mueva rápidamente hacia
atrás en dirección al operador, y podría causar la pérdida
del control, lo cual, a su vez, podría ocasionar lesiones
graves o mortales.
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■ El rechazo frecuentemente ocurre cuando se utiliza la
parte superior de la espada para hacer los cortes.
■ Para reducir el riesgo de rechazo:
– Esté atento a las fuerzas o situaciones que puedan
permitir que el material se atasque o aprisione en la
parte superior de la cadena.
– No corte más de un tronco a la vez.
– No tuerza la motosierra cuando retire la espada de
un corte por debajo, porque la cadena puede quedar
aprisionada o atascarse.
– Corte con una cadena afilada y con la tensión
adecuada.
8Técnica de trabajo básica
8.1Usos previstos
ADVERTENCIA
■ Esta motosierra liviana equipada con un mango superior
está diseñada específicamente para los trabajos de
arboricultura.
■ Esta motosierra no ha sido diseñada para talar árboles ni
cortar troncos en el suelo.
■ Antes de comenzar algún trabajo de corte, cargue por
completo la batería y asegúrese de que todos los cortes
necesarios se puedan realizar con una única carga.
– Cargue por completo la batería antes de comenzar
a trabajar.
– Antes de empezar, compruebe que se puedan
finalizar todos los cortes necesarios con la carga
existente.
■ Coloque la motosierra en una posición tal que el cuerpo
esté lejos del accesorio de corte cuando el motor está
funcionando.
8.2Poda
La poda consiste en retirar de manera selectiva ramas de un
árbol en pie.
ADVERTENCIA
■ Para reducir el riesgo de lesiones provocadas por una
pérdida de control:
– No use la motosierra con una sola mano.
– Nunca use la motosierra por encima de sus hombros
ni corte por encima de su cabeza.
– No extienda los brazos más de lo necesario.
– Si no le es posible respetar estas instrucciones,
deberá utilizar una herramienta distinta, como,
p. ej., un podador de varilla.
– Si las condiciones lo permiten, trabaje desde una
plataforma elevadora.
■ Esta motosierra liviana equipada con un mango superior
está diseñada específicamente para trabajos de
arboricultura. Si el operador no está debidamente
asegurado para usar esta sierra con las dos manos en un
árbol, aumenta el riesgo de lesiones provocadas por una
pérdida del control.
■ Por esta razón, solo personas que conozcan las técnicas
de corte y de trabajo específicas deben trabajar en un
árbol con esta motosierra. Este tipo de motosierra no está
diseñado para trabajos de corte en el suelo, tales como la
tala y el tronzado de árboles.
■ Dado que esta motosierra no está diseñada para usarse
en el suelo, este manual no contiene instrucciones sobre
la tala de árboles, ni sobre el tronzado de un árbol caído.
Si busca instrucciones sobre la aplicación de estas
técnicas con otros modelos de motosierra de STIHL,
consulte los manuales de instrucciones de los modelos
correspondientes o el Manual de seguridad de
motosierras STIHL, disponible de forma gratuita en su
concesionario STIHL autorizado.
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■ Para reducir el riesgo de lesiones:
– Nunca se coloque directamente debajo de la rama
que está cortando.
– Preste atención a las ramas que caen. Cuando una
rama empiece a caer, apártese y guarde una
distancia suficiente.
Durante la poda, haga un corte previo en las ramas siempre
que sea necesario, para evitar que la madera se astille o
que la corteza se desgarre.
Para cortar las ramas de un árbol en pie:
B
2
1
A
3
► Haga el primer corte (1) en la parte inferior (A) de la rama.
Corte aproximadamente 1/4 del diámetro de la rama.
► Haga el segundo corte (2) en la parte superior de la
rama (B), directamente sobre el primer corte.
► El tercer corte (corte final) (3) se debe hacer más cerca de
la rama, de tal modo que la corteza adyacente
permanezca firmemente adherida.
Encontrará otras técnicas aceptadas para la poda de
árboles en la norma ANSI A300.
8.3Corte de ramas en tensión
B
2
1
A
A = Lado de compresión
B = Lado de tensión
ADVERTENCIA
■ Hay un mayor riesgo de que la motosierra quede
aprisionada cuando se corta una rama en tensión. La
tensión en la madera también puede liberarse
repentinamente y con gran fuerza, impulsar la rama o la
motosierra hacia el operador y provocar lesiones o la
pérdida del control sobre la máquina.
0000-GXX-C575-A0
■ Para reducir el riesgo de lesiones graves o mortales
provocadas por las fuerzas reactivas, incluido el
contragolpe, o por una pérdida de control al cortar madera
bajo tensión:
– Comience siempre con un recorte (1) en el lado de
compresión (A) de la rama, y haga después un corte
de tronzado (2) en el lado de tensión (B).
– Si la espada/cadena queda aprisionada, apague el
motor, active el freno de la cadena, quite la batería
y saque la sierra de la rama, con cuidado para que
la rama no se quiebre ni se desprenda de repente.
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8.4Bloqueo y retirada de secciones de un árbol en
pie
8.4.1Entalladura convencional
ADVERTENCIA
■ Estas instrucciones para trabajo en el árbol son aplicables
a las motosierras con mango superior de STIHL
diseñadas exclusivamente para el uso profesional en
arboricultura. Si busca instrucciones básicas sobre la tala
de árboles desde el suelo, consulte el manual de
instrucciones de su motosierra STIHL con mango trasero.
■ Estas técnicas de trabajo básicas no pretenden
reemplazar el buen criterio de un profesional
experimentado que conozca directamente las
condiciones del lugar de trabajo. En sus circunstancias
particulares, puede ser adecuado aplicar un tipo de
entalladura o una técnica de trabajo diferentes. Aplique
siempre su buen juicio y su criterio profesional a la hora
de determinar la forma más segura de llevar a cabo un
trabajo de corte.
A
Para una entalladura convencional:
► En primer lugar, haga un corte hacia abajo en un ángulo
de 45 grados y de una profundidad de aproximadamente
entre 1/5 y 1/4 del diámetro del tronco.
1
0000099286_001
Cuando corte la entalla de tala, use la mira (1) en la sierra
para verificar el sentido de caída deseado:
► Coloque la entalla de tala perpendicular a la línea de
caída. Coloque la sierra de modo que la mira (1) apunte
exactamente en la dirección en que usted desea que
caiga el árbol.
► Para completar el objetivo de tala, realice un corte
horizontal hasta la parte inferior del primer corte.
► Retire la pieza de 45 grados resultante y confirme que la
parte posterior del objetivo de tala esté perpendicular a la
línea de caída deseada.
A
La entalladura (A) determina la dirección en que caerá el
árbol. Haga la entalladura en perpendicular a la línea en que
desea que caiga el tronco. Preste atención a aspectos tales
como el viento, la inclinación del árbol y la pendiente del
terreno, así como a otros factores que podrían modificar la
dirección de la caída.
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8.4.2Corte trasero
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8 Técnica de trabajo básica
AABBC
C
0000-GXX-A332-A0
► Inicie el corte trasero (C) al nivel del punto más bajo de la
entalladura (A).
► Corte en horizontal, hacia la entalladura.
► Deje aproximadamente 1/10 del diámetro del árbol sin
cortar (B). Esta es la "bisagra".
► No atraviese la bisagra con la sierra: podría perder el
control sobre la dirección de la caída.
Cuando retire secciones de un árbol:
► Asegúrese de que todas las personas que se encuentran
cerca están alejadas de la zona antes de empezar a
trabajar.
► Mantenga una distancia adecuada con respecto a las
estructuras más cercanas, para evitar que el material que
caiga cause daños materiales.
► Tome aún más precauciones cuando trabaje cerca de
calles, vías de ferrocarril o cables de alimentación
eléctrica. Informe a la policía, a la empresa de suministro
local o a las autoridades ferroviarias antes de empezar a
cortar.
ADVERTENCIA
■ Nunca atraviese la bisagra con la sierra cuando haga el
corte trasero. La bisagra permite controlar la caída del
árbol. Si se corta la bisagra, se elimina la posibilidad de
controlar la caída, y se pueden provocar lesiones graves
o mortales o daños materiales.
español / EE.UU
■ Para reducir el riesgo de lesiones, nunca se coloque
directamente detrás del tronco cuando este esté a punto
de caer, puesto que parte del tronco podría partirse y caer
hacia el operador (efecto de "sillón de peluquero"), o el
árbol puede saltar hacia atrás y desprenderse del tocón.
■ Colóquese siempre, con su equipo, lejos del material que
va a retirar.
■ Cuando el material empiece a caer, retire la espada y
suelte el gatillo. Una vez completado un corte, active el
freno de la cadena antes de mover la máquina a otro
punto del árbol.
ADVERTENCIA
■ Esta motosierra no está diseñada para cortar árboles de
gran diámetro. Usarla para cortar árboles de gran
diámetro podría impedir controlar la caída, lo que, a su
vez, puede causar lesiones graves o mortales.
■ Antes de iniciar cualquier operación de corte, asegúrese
de que la sierra que está usando tiene un tamaño, una
potencia y una autonomía suficientes para completar la
tarea de corte de forma eficiente y sin necesidad de
recargar la batería. Como alternativa, tenga varias
baterías cargadas listas para el uso, o elija una motosierra
o una batería más potente.
■ Hay varios factores que pueden afectar la dirección en
que se prevé que va a caer el árbol; p. ej., la dirección y
la velocidad del viento, la inclinación del árbol, los árboles
y obstáculos de los alrededores, la pendiente del terreno
y la estructura o el grado de descomposición de la
madera.
– Para reducir el riesgo de sufrir lesiones graves o
mortales o de provocárselas a otras personas,
busque, analice e incluya estos factores en la
planificación antes de iniciar el corte.
– Para retirar porciones de un árbol que tenga un
diámetro mayor que la longitud de corte útil de la
espada es necesario usar técnicas de corte
especiales (p. ej., trabajar por secciones, corte con
penetración). Estos métodos pueden ser
extremadamente peligrosos, porque requieren el
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español / EE.UU
9 Seguridad de la batería
uso de la punta de la espada y pueden producir un
contragolpe. Solo profesionales debidamente
formados deben intentar usar estas técnicas.
■ Los árboles que se han partido, que están
descompuestos o podridos por dentro o que están
inclinados o sujetos a otro tipo de tensión tienen más
probabilidades de partirse o retroceder bruscamente
durante el corte, lo que, a su vez, puede provocar lesiones
graves o mortales al operador o a las personas de los
alrededores.
– Los usuarios que no tengan experiencia no deben
intentar cortar este tipo de árboles.
– Busque ramas rotas o muertas que podrían llegar a
desprenderse a consecuencia de las vibraciones y
caer sobre el operador. Determinados tipos de
árboles tienen mayor tendencia a este tipo de
condición. Es el caso, por ejemplo, del abeto de
Douglas.
– Preste atención y tenga en cuenta siempre el estado
general del árbol.
9Seguridad de la batería
9.1Advertencias e instrucciones
ADVERTENCIA
■ Lea y respete las medidas de seguridad que figuran en la
batería, así como todas las advertencias e instrucciones
que se adjuntan con ella.
■ El uso de baterías no autorizadas puede causar daños en
la herramienta motorizada y provocar incendios,
explosiones, lesiones personales y daños materiales.
– Use únicamente baterías originales de STIHL con
esta herramienta motorizada. Para conocer los tipos
de baterías aprobados, consulte el capítulo @ 27.1.
■ La utilización de baterías de las series AR o AP de STIHL
para cualquier fin que no sea alimentar los productos de
STIHL podría ser extremadamente peligroso.
– Use las baterías de las gamas AR y AP de STIHL
solo para proporcionar alimentación a productos de
STIHL compatibles.
■ El uso de cargadores no autorizados puede causar daños
en la batería y provocar incendios, explosiones, lesiones
y daños materiales.
– Para cargar las baterías de la gama AP de STIHL,
utilice siempre cargadores STIHL AL 101, AL 300 o
AL 500 auténticos.
– Para cargar las baterías de mochila de la gama AR
de STIHL, utilice siempre cargadores AL 300 o
AL 500 de STIHL auténticos.
■ La batería tiene funciones y dispositivos de seguridad
que, de dañarse, pueden provocar que la batería genere
calor, se rompa, pierda líquido, se incendie o explote.
– Nunca permita que la temperatura de la
batería supere los 212 °F (100 °C).
– Nunca prenda fuego a la batería, ni la
coloque sobre o junto a fuegos, estufas
u otro tipo de objetos que alcances
temperaturas muy altas.
– Nunca use ni cargue una batería que no funcione
correctamente o que esté dañada, agrietada,
deformada o pierda líquido.
– Nunca abra, desmonte ni golpee la batería; no la
deje caer ni la exponga a impactos fuertes o a daños
de cualquier otro tipo.
– Nunca exponga la batería a microondas ni a
presiones elevadas.
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