Stihl HSA 45 User manual

HSA 45
2 - 23 Instruction Manual
23 - 48 Notice d’emploi

Contents
1 Introduction................................................. 2
2 Guide to Using this Manual.........................2
3 Main Parts...................................................2
4 Safety Symbols on the Products.................3
5 General Power Tool Safety Warnings.........4
6 IMPORTANT SAFETY INSTRUCTIONS....6
7 Charger Safety..........................................12
8 Maintenance, Repair and Storage............ 13
9 Before Starting Work.................................14
10 Charging the Hedge Trimmer................... 14
11 LED Diagnostics....................................... 15
12 Inserting and Removing the Activation Key
.................................................................. 15
13 Switching the Hedge Trimmer On and Off 16
14 Checking the Controls...............................17
15 During Operation.......................................17
16 After Finishing Work..................................18
17 Transporting the Hedge Trimmer..............18
18 Storing the Hedge Trimmer and Charger..19
19 Cleaning....................................................20
20 Inspection and Maintenance..................... 20
21 Troubleshooting Guide..............................21
22 Specifications............................................22
23 Replacement Parts and Equipment.......... 23
24 Disposal.................................................... 23
25 Addresses................................................. 23
1 Introduction
Thank you for your purchase. The information
contained in this manual will help you receive
maximum performance and satisfaction from
your hedge trimmer and, if followed, reduce the
risk of injury from its use.
SAVE THIS MANUAL!
Because a hedge trimmer is a high-
speed cutting tool, special safety pre‐
cautions must be observed to reduce
the risk of personal injury.
Read this instruction manual thor‐
oughly before use and periodically
thereafter. Follow all safety precau‐
tions. Careless or improper use of the
hedge trimmer can cause serious or
fatal injury.
Do not lend or rent the hedge trimmer without
this instruction manual. Allow only persons who
fully understand the information in this manual to
operate the hedge trimmer.
For further information, or if you do not under‐
stand any of the instructions in this manual,
please go to www.stihl.ca or contact your author‐
ized STIHL servicing dealer.
2 Guide to Using this Manual
2.1 Signal Words
This manual contains safety information that
requires your special attention. Such information
is introduced with the following symbols and sig‐
nal 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 com‐
ponents.
2.2 Symbols 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.
3 Main Parts
3.1 Hedge Trimmer and Charger
The hedge trimmer is powered by an integrated
lithium ion battery that cannot be removed from
the power tool.
English
2 0458-717-8221-C
© ANDREAS STIHL AG & Co. KG 2023
0458-717-8221-C. VA0.K23.
Printed on chlorine-free paper Paper is recyclable.
Original Instruction Manual
0000010253_002_GB

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1 Switch Lever
Activates the cutting attachment when
depressed in combination with the trigger
switch.
2 Retaining Latch
Locks/unlocks the trigger switch.
3 Trigger Switch Lockout
Must be depressed while the retaining latch is
unlocked to allow activation of the trigger
switch.
4 Control Handle
Handle for the operator's rear hand.
5 Push Button
Activates the hedge trimmer's LEDs.
6 Hedge Trimmer LEDs
Indicate the hedge trimmer's state of charge
and display error messages regarding poten‐
tial malfunctions in the power tool or its inte‐
grated battery.
7 Trigger Switch
Activates the cutting attachment when
depressed in combination with the switch
lever.
8 Charging Socket
Socket for connecting the charger to the
hedge trimmer.
9 Activation Key
Enables the flow of electrical power from the
integrated battery to the motor.
10 Activation Key Socket
Socket for connecting the activation key to
the hedge trimmer.
11 Loop Handle
Handle for the operator's front hand.
12 Hand Guard
Helps protect the operator's front hand from
projecting branches and other materials and
contact with the cutting blades.
13 Cutting Blades
Steel blades for cutting hedges, shrubs and
bushes.
14 Connector
Connects the charger to the hedge trimmer's
charging socket.
15 Power Supply Cord
Supplies electrical charging current when the
charger is plugged into an electrical outlet.
16 Plug
Connects the charger to an electrical outlet.
17 Charger (Power Supply)
Power supply for charging the hedge trimmer.
# Rating Plate
Contains electrical information and the pro‐
duct's serial number.
4 Safety Symbols on the
Products
4.1 Hedge Trimmer and Charger
The following safety symbols are found on the
hedge trimmer and/or charger:
To reduce the risk of injury, follow the
specified safety precautions.
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 eye injury, always
wear proper eye protection, 6.3.
To reduce the risk of cut injuries, keep
hands, feet and other body parts away
from the cutting blades, 6.6.4.
To reduce the risk of injury or property
damage from unintended activation,
remove the activation key any time the
hedge trimmer is not in use, 8.
4 Safety Symbols on the Products English
0458-717-8221-C 3

To reduce the risk of personal injury or
property damage from a short circuit,
fire or explosion, keep the hedge trim‐
mer dry. Protect it from rain, water, liq‐
uids and damp conditions. Never
immerse the hedge trimmer in water or
other liquids, 6.4.
To reduce the risk of personal injury or
property damage from fire, explosion
or burns, including chemical burns, do
not disassemble the hedge trimmer's
housing. Never crush, drop, damage
or heat the hedge trimmer above
212 °F (100 °C), expose it to fire or
incinerate, 6.4.
To reduce the risk of personal injury or
property damage from fire, use and
store the hedge trimmer only within an
ambient temperature range of 32 °F to
122 °F (0 °C to 50 °C), 6.5.
To reduce the risk of personal injury or
property damage from fire or electric
shock, keep the charger dry. Protect it
from rain, water, liquids and damp con‐
ditions. For indoor use only, 7.
5 General Power Tool Safety
Warnings
5.1 Introduction
This chapter contains the prescribed general
safety warnings and instructions for handheld,
motor-operated electric power tools. Additional
important warnings and instructions are provided
in subsequent chapters of this manual.
WARNING
■Read all safety warnings, instructions, illustra‐
tions and specifications provided with this
power tool. Failure to follow all instructions lis‐
ted below may result in electric shock, fire
and/or serious injury.
■Save all warnings and instructions for future
reference.
The term "power tool" in the warnings refers to
your mains-operated (corded) power tool or bat‐
tery-operated (cordless) power tool.
5.2 Work Area Safety
a)Keep work area clean and well lit. Cluttered
or dark areas invite accidents.
b)Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power
tools create sparks which may ignite the dust
or fumes.
c)Keep children and bystanders away while
operating a power tool. Distractions can
cause you to lose control.
5.3 Electrical Safety
a)Power tool plugs must match the outlet.
Never modify the plug in any way. Do not
use any adapter plugs with earthed (groun‐
ded) power tools. Unmodified plugs and
matching outlets will reduce the risk of elec‐
tric 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 entan‐
gled 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.
5.4 Personal Safety
a)Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired
or under the influence of drugs, alcohol or
medication. A moment of inattention while
operating power tools may result in serious
personal injury.
b)Use personal protective equipment. Always
wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes,
hard hat, or hearing protection used for
appropriate conditions will reduce personal
injuries.
c)Prevent unintentional starting. Ensure the
switch is in the 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
English 5 General Power Tool Safety Warnings
4 0458-717-8221-C

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 con‐
trol of the power tool in unexpected situa‐
tions.
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 frac‐
tion of a second.
5.5 Power Tool Use and Care
a)Do not force the power tool. Use the correct
power tool for your application. The correct
power tool will do the job better and safer at
the rate for which it was designed.
b)Do not use the power tool if the switch does
not turn it on and off. Any power tool that
cannot be controlled with the switch is dan‐
gerous and must be repaired.
c)Disconnect the plug from the power source
and/or remove the battery pack, if detacha‐
ble, from the power tool before making any
adjustments, changing accessories, or stor‐
ing 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 dan‐
gerous 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 condi‐
tion that may affect the power tool's opera‐
tion. 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 situa‐
tion.
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.
5.6 Battery 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 desig‐
nated 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 connec‐
tion 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 dam‐
aged or modified. Damaged or modified bat‐
teries 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 instruc‐
tions. Charging improperly or at tempera‐
tures outside the specified range may dam‐
age the battery and increase the risk of fire.
5 General Power Tool Safety Warnings English
0458-717-8221-C 5

5.7 Service
a)Have your power tool serviced by a qualified
repair person using only identical replace‐
ment parts. This will ensure that the safety of
the power tool is maintained.
b)Never service damaged battery packs. Serv‐
ice of battery packs should only be per‐
formed by the manufacturer or authorized
service provider.
5.8 Hedge Trimmer Safety Warn‐
ings
a)Do not use the hedge trimmer in bad
weather conditions, especially when there is
a risk of lightning. This decreases the risk of
being struck by lightning.
b)Keep all power cords and cables away from
cutting area. Power cords or cables may be
hidden in hedges or bushes and can be acci‐
dentally cut by the blade.
c)Wear ear protection. Adequate protective
equipment will reduce the risk of hearing
loss.1
d)Hold the hedge trimmer by insulated gripping
surfaces only, because the blade may con‐
tact hidden wiring or its own cord. Blades
contacting a "live" wire may make exposed
metal parts of the hedge trimmer "live" and
could give the operator an electric shock.
e)Keep all parts of the body away from the
blade. Do not remove cut material or hold
material to be cut when blades are moving.
Blades continue to move after the switch is
turned off. A moment of inattention while
operating the hedge trimmer may result in
serious personal injury.
f)When clearing jammed material or servicing
the hedge trimmer, make sure all power
switches are off and the battery pack is
removed or disconnected. Unexpected
actuation of the hedge trimmer while clearing
jammed material or servicing may result in
serious personal injury.
g)Carry the hedge trimmer by the handle with
the blade stopped and taking care not to
operate any power switch. Proper carrying of
the hedge trimmer will decrease the risk of
inadvertent starting and resultant personal
injury from the blades.
h)When transporting or storing the hedge trim‐
mer, always use the blade cover. Proper
handling of the hedge trimmer will decrease
the risk of personal injury from the blades.
6 IMPORTANT SAFETY
INSTRUCTIONS
6.1 Intended Use
WARNING
■ This hedge trimmer is designed for light-duty
trimming of hedges, shrubs and bushes in
yards and gardens around the home. Use of
the hedge trimmer for operations different than
intended could result in serious injury or death.
►Use the hedge trimmer only for light-duty
trimming tasks around the home and gar‐
den.
■Improper use could result in personal injury or
property damage, including damage to the
hedge trimmer.
►Use the hedge trimmer and charger only as
described in this manual.
► Never attempt to modify or override the
hedge trimmer's controls or safety devices
in any way.
►Never use a hedge trimmer that has been
modified or altered from its original design.
■ The LK 45 charger (power supply) is designed
for charging STIHL HSA 45, FSA 45 and BGA
45 power tools only.
6.2 Operator
WARNING
■Working with the hedge trimmer can be stren‐
uous. The operator must be in good physical
condition and mental health. To reduce the
risk of personal injury:
►Check with your doctor before using the
hedge trimmer if you have any health condi‐
tion that may be aggravated by strenuous
work.
►Do not operate the hedge trimmer while
under the influence of any substance (drug,
alcohol or medication, etc.) that might
impair vision, balance, dexterity or judg‐
ment.
►Be alert. Do not operate the hedge trimmer
when you are tired. Take a break if you
become tired.
1Sound pressure level > 85 dB(A)
English 6 IMPORTANT SAFETY INSTRUCTIONS
6 0458-717-8221-C

► Do not permit minors to use the hedge trim‐
mer.
■ According to STIHL's current knowledge, the
electric motor of this hedge trimmer should not
interfere with a pacemaker.
►However, persons with a pacemaker or
other implanted medical device should con‐
sult their physician and device manufac‐
turer before operating this hedge trimmer.
6.3 Personal 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 cutting blades or otherwise
become entangled in the components of the
hedge trimmer. To reduce the risk of severe
personal injury:
► Wear sturdy and snug-fitting clothing
that also allows complete freedom of
movement.
► Wear overalls or long pants made of
heavy material to help protect your
legs. Do not wear shorts.
►Wear a long-sleeve shirt or jacket.
► Avoid loose-fitting jackets, scarves, neck‐
ties, flared or cuffed pants, jewelry and any
other apparel that could be caught on
branches, brush or the moving cutting
attachment.
►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
side protection that are impact-rated
and marked as complying with
CSA Z94.
■Good footing is very important. To help main‐
tain a secure footing and reduce the risk of
injury while working:
► Wear substantial footwear with non-
slip soles. Do not wear sandals, flip-
flops, open-toed or similar footwear.
■ To improve your grip and help protect your
hands:
► Always wear heavy-duty non-slip
work gloves made of leather or
another wear-resistant material
when handling the hedge trimmer or
its cutting blades.
6.4 Hedge Trimmer
WARNING
■To reduce the risk of electric shock:
► Do not expose the hedge trimmer to
rain, water or excessive moisture.
► Store the hedge trimmer indoors.
► Never immerse the hedge trimmer in
water or other liquids.
■The cutting blades have many sharp cutters.
Making contact with the cutters may result in
serious laceration injuries, even if the cutting
blades are not moving. To reduce the risk of
such injuries:
►Keep hands, feet and other parts of your
body away from the cutting blades.
► Never hold the material to be cut.
► Never remove cut material without first
releasing the trigger switch and removing
the activation key.
►Wear heavy-duty work gloves when han‐
dling the hedge trimmer or its cutting
blades.
►Never touch the moving cutting blades with
your hand or any other part of your body.
► Cover the entire length of the cutting blades
with a blade scabbard before transporting
or storing the hedge trimmer to reduce the
risk of inadvertent contact.
■This battery-powered hedge trimmer is inten‐
ded only for light-duty garden and landscape
maintenance around the home. Use for other
purposes may increase the risk of personal
injury and property damage.
►Do not attempt to cut any material other
than hedges, shrubs, bushes or similar soft
vegetation. Do not cut stems, branches or
other vegetation greater than 0.32 in.
(8 mm) thick.
►Read and follow the operating instructions
in this manual for approved applications,
15.
■To reduce the risk of personal injury to the
operator and bystanders:
► Always release the trigger switch
and remove the activation key before
assembling, transporting, adjusting,
inspecting, cleaning, servicing, main‐
taining or storing the hedge trimmer,
and any other time it is not in use.
►Release the trigger switch and remove the
connecting cord before clearing jammed
material.
►Never leave the hedge trimmer unattended
when the activation key is inserted.
■ Although certain unauthorized attachments
may fit your STIHL hedge trimmers, their use
6 IMPORTANT SAFETY INSTRUCTIONS English
0458-717-8221-C 7

may be extremely dangerous. Only attach‐
ments 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 hedge trimmer in any
way.
► Never attempt to modify or override the
hedge trimmer's controls or safety devices
in any way.
►Never use a hedge trimmer that has been
modified or altered from its original design.
■ If the hedge trimmer is dropped or subjected
to similar heavy impacts:
► Check that it is undamaged, in good condi‐
tion and functioning properly before con‐
tinuing work.
►Check that the controls and safety devices
are working properly.
►Check the LEDs for error messages,
11.1.
► Never work with a damaged or malfunction‐
ing hedge trimmer.
► Never use or charge a hedge trimmer with
a motor housing that is cracked, deformed,
excessively hot, leaking battery fluid or oth‐
erwise damaged. These could be signs that
the battery inside the hedge trimmer is
damaged, increasing the risk of personal
injury and property damage from short cir‐
cuit, fire or explosion. In case of doubt,
have the hedge trimmer checked by your
authorized STIHL servicing dealer.
■ If the hedge trimmer or battery is damaged,
not working properly, has been left outdoors,
exposed to rain or damp conditions or dropped
into water or other liquid, its components,
including its integrated battery, may no longer
function properly and safety devices may be
inoperative. To reduce the risk of personal
injury and property damage:
► Take the hedge trimmer to your authorized
STIHL servicing dealer to be checked
before further operation.
■Genuine STIHL replacement parts are specifi‐
cally designed to match your hedge trimmer
and meet safety and performance require‐
ments. 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.
6.5 Integrated Battery
WARNING
■Use of an unauthorized charging device can
damage the lithium ion battery inside the
hedge trimmer and result in fire, explosion and
personal injury and property damage.
►Charge the hedge trimmer only with a gen‐
uine STIHL LK 45 charger (power supply).
■ The hedge trimmer's integrated battery con‐
tains safety features and devices which, if
damaged, may allow it to generate heat, rup‐
ture, leak, ignite or explode.
►Be alert for signs that the battery may be
damaged: never use or charge a hedge
trimmer with a housing that is cracked,
deformed, excessively hot, leaking battery
fluid or otherwise damaged.
►Never attempt to remove the battery or
open or disassemble the hedge trimmer's
housing for any reason.
►Never subject the hedge trimmer to heavy
impacts or attempt to crush, drop or other‐
wise damage it.
► Never heat the hedge trimmer above
212 °F (100 °C) or place it on or near
fires, stoves or other high-tempera‐
ture locations.
►Never expose the hedge trimmer to micro‐
waves or high pressures.
► Never insert foreign objects into the hedge
trimmer's charging socket, activation key
socket or other openings.
■High temperatures may cause the hedge
trimmer's integrated 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 damage the battery.
► Use and store the hedge trimmer
only within an ambient temperature
range of 32 °F to 122 °F (0 °C to
50 °C).
■To reduce the risk of personal injury and prop‐
erty damage in the event the hedge trimmer
emits smoke, an unusual smell or feels unusu‐
ally hot while using, charging or storing:
►Immediately discontinue using or charging
the hedge trimmer and prepare to contact
the authorities in the event of fire or explo‐
sion.
■To reduce the risk of electric shock:
► Never bridge the electrical contacts of the
activation key socket with wires or other
small metal objects capable of conducting
English 6 IMPORTANT SAFETY INSTRUCTIONS
8 0458-717-8221-C

electricity (e.g., paper clips, nails, coins,
keys).
► Keep the hedge trimmer dry. Protect
it from rain and ensure that the
hedge trimmer and its battery are
never exposed to water, liquids or
damp conditions.
► Never immerse the hedge trimmer in
water or other liquids.
►Store the hedge trimmer indoors in a dry
room.
► Never store the hedge trimmer in damp or
corrosive environments or in conditions that
could lead to corrosion of its metal compo‐
nents or battery.
►Protect the hedge trimmer from exposure to
corrosive agents such as garden chemicals
and de-icing salts, which may damage its
battery and increase the risk of short circuit,
fire and explosion.
►Do not attempt to repair, open or disassem‐
ble the hedge trimmer. There are no user-
serviceable parts inside.
■If the integrated battery is damaged, battery
fluid can leak out of the hedge trimmer. Leak‐
ing battery fluid can cause skin and eye irrita‐
tion or chemical burns.
►Avoid contact with skin and eyes.
► Use an inert absorbent such as sand on
spilled liquids.
► In the event of accidental contact, immedi‐
ately 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 atten‐
tion.
■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 the burned battery.
6.6 Using the Hedge Trimmer
6.6.1 Before Operation
WARNING
■Misuse or unauthorized use may result in per‐
sonal injury and property damage.
► Use the hedge trimmer only as described in
this instruction manual.
■ Using a hedge trimmer that is modified, dam‐
aged, 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 hedge trimmer that is
modified, damaged, improperly maintained
or not completely and securely assembled.
►Always check your hedge trimmer for
proper condition and operation before start‐
ing work, particularly the retaining latch,
trigger switch lockout, trigger switch, switch
lever, front hand guard and cutting blades.
►Ensure that the retaining latch, trigger
switch lockout, trigger switch and switch
lever move freely and spring back into
place when released. The trigger switch
must not engage until the retaining latch is
unlocked and the trigger switch lockout is
depressed.
►Never attempt to modify or override the
controls or safety devices in any way.
► The cutting blades must move only when
the activation key is inserted, the retaining
latch is unlocked and the trigger switch
lockout, trigger switch and switch lever are
depressed.
►If your hedge trimmer or any part is dam‐
aged or does not function properly, take it
to your authorized STIHL servicing dealer.
Do not use the hedge trimmer until the
problem has been corrected.
■Before inserting the activation key:
► Check the electrical contacts of the activa‐
tion key and activation key socket for corro‐
sion or other foreign matter. Keep clean.
►Never insert a damaged, deformed or cor‐
roded activation key.
► Read and follow the instructions on switch‐
ing on the hedge trimmer, 13.1.
■ To help reduce the risk of serious personal
injury or death from unintentional starting:
► Be sure the retaining latch is in the locked
position and the trigger switch is in the off
position before inserting the activation key.
►Never carry the hedge trimmer with your
finger on the trigger switch.
► Release the trigger switch before removing
the activation key.
► Remove the activation key before
assembling, transporting, adjusting,
inspecting, cleaning, servicing, main‐
taining or storing the hedge trimmer,
and any other time it is not in use.
6 IMPORTANT SAFETY INSTRUCTIONS English
0458-717-8221-C 9

► Never leave the hedge trimmer unattended
when the activation key is inserted.
► Never store the activation key in the hedge
trimmer.
■ Before switching on your hedge trimmer, take
the following steps to reduce the risk of per‐
sonal injury, loss of control or inadvertent con‐
tact with the cutting attachment:
►Be sure that the cutting blades are clear of
you and all other obstructions and objects,
including the ground.
►Never switch on the hedge trimmer with
material between the cutting blades.
► Read and follow the instructions on switch‐
ing on the hedge trimmer, 13.1.
6.6.2 Holding and Controlling the Hedge
Trimmer
0000-GXX-1420-A0
WARNING
■To maintain a firm grip and properly control
your hedge trimmer:
► 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 con‐
trol:
►Always hold the hedge trimmer firmly with
both hands when you are working.
► Wrap your fingers tightly around the han‐
dles, keeping the handles cradled between
your thumb and forefinger (see illustration).
►Position the hedge trimmer in such a way
that all parts of your body are clear of the
cutting attachment whenever the activation
key is inserted.
■Operating the hedge trimmer with one hand
may lead to loss of control and is therefore
extremely dangerous. To reduce the risk of
serious or fatal injury to the operator or
bystanders from loss of control:
► Never attempt to operate the hedge
trimmer with one hand.
► Never hold the material to be cut.
Never remove cut material without
first releasing the trigger switch and
removing the activation key.
► Release the trigger switch and
remove the activation key before
clearing jammed material.
■To reduce the risk of serious or fatal cut inju‐
ries to the operator or bystanders from loss of
control, keep proper footing and balance at all
times:
►Never work on a ladder, roof, in a tree or
while standing on any other insecure sup‐
port.
►Take special care in overgrown or wet ter‐
rain and always watch for hidden obstacles
such as tree stumps, roots, rocks, holes
and ditches to avoid stumbling or falling.
►Be extremely cautious when working on
slopes or uneven ground.
► For better footing, always clear away fallen
branches, scrub, cuttings and other mate‐
rial, objects or vegetation that can increase
the danger of slipping, tripping or falling.
►Never operate the hedge trimmer above
shoulder height.
► Do not overreach. Keep proper footing and
balance at all times.
■ To reduce the risk of serious or fatal cut inju‐
ries to the operator or bystanders from blade
contact:
► Keep hands, feet and other body
parts away from the cutting blades.
► Do not touch the cutting blades while the
activation key is inserted.
► Never touch moving cutting blades with
your hand or any other part of your body.
► If the cutting blades become jammed
by thick branches or other obstruc‐
tions, release the trigger switch, trig‐
ger switch lockout and switch lever
immediately and remove the activa‐
tion key before attempting to free the
blades.
6.6.3 Working Conditions
WARNING
■Operate your hedge trimmer only under good
visibility during favorable daylight conditions.
► Postpone the work if the weather is windy,
foggy, rainy or inclement.
■ Your hedge trimmer is a one-person machine.
► Bystanders, especially children, and ani‐
mals should not be allowed in the area
where it is in use.
►Switch off the hedge trimmer immediately if
you are approached.
English 6 IMPORTANT SAFETY INSTRUCTIONS
10 0458-717-8221-C

■ To reduce the risk of injury to bystanders and
unauthorized users:
► Never leave the hedge trimmer unattended
when the activation key is inserted.
► Switch off the hedge trimmer and remove
the activation key during work breaks and
any other time the hedge trimmer is not in
use.
■Sparks generated from operation of the hedge
trimmer may be capable of igniting combusti‐
ble gases, liquids, vapors, dusts or other com‐
bustible materials and substances. To reduce
the risk of fire and explosion:
►Never operate the hedge trimmer in a loca‐
tion where combustible gases, liquids,
vapors, dusts or other combustible materi‐
als and substances are present.
►Read and follow recommendations issued
by government authorities (e.g., CCOHS)
for identifying and avoiding the hazards of
combustible gases, liquids, vapors, dusts or
other combustible materials and substan‐
ces.
■Use of this hedge trimmer (including sharpen‐
ing the cutting blades) can generate dust and
other substances containing chemicals known
to cause respiratory problems, cancer, birth
defects and other reproductive harm.
►Consult governmental agencies such as
ECCC, CCOHS and PHAC and other
authoritative sources on hazardous materi‐
als if you are unfamiliar with the risks asso‐
ciated 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 sus‐
ceptible persons to have an allergic or asth‐
matic reaction. Substantial or repeated inhala‐
tion of dust or other airborne contaminants,
especially those with a smaller particle size,
may cause respiratory or other illnesses.
►Control dust at the source where possible.
► Always work with properly sharpened cut‐
ting blades.
► To the extent possible, operate the hedge
trimmer so that the wind or operating proc‐
ess directs any dust, mist or other particu‐
late matter raised by the hedge trimmer
away from the operator.
►When respirable dust or other particulate
matter cannot be kept at or near back‐
ground levels, always wear a respirator that
is approved by PHAC and rated for work‐
site-specific conditions. Follow the recom‐
mendations of governmental authorities
(e.g., CCOHS/PHAC) 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 warn‐
ings that accompanied the substance coat‐
ing the vegetation or surrounding ground.
6.6.4 Operating Instructions
WARNING
■ To reduce the risk of serious or fatal cut inju‐
ries to the operator or bystanders from blade
contact:
► Keep hands, feet and other body
parts away from the cutting blades.
► Do not touch the cutting blades while
the activation key is inserted.
► Never touch moving cutting blades
with your hand or any other part of
your body.
► Never hold the material to be cut.
Never remove cut material without
first releasing the trigger switch and
removing the activation key.
► Release the trigger switch and
remove the activation key before
clearing jammed material.
■ To reduce the risk of severe personal injuries
from unintentional starting:
► Never touch the cutting blades with your
hand or any other part of your body when
the activation key is inserted, even when
the cutting blades are not moving.
► If the cutting blades become jammed
by branches or other obstructions,
switch off the hedge trimmer immedi‐
ately and remove the activation key
before attempting to free the blades.
■The cutting blades continue to move for a
short period after the trigger switch or switch
lever is fully released.
►Wait for the cutting blades to stop before
walking with the hedge trimmer or putting it
down.
■In the event of an emergency:
► Switch off the motor immediately and
remove the activation key.
■ Contacting foreign objects while cutting could
damage the cutting blades and may cause
them to crack, chip, break or jam. To reduce
the risk of severe personal injury or death from
loss of control, and to reduce the risk of dam‐
age to the hedge trimmer:
►Inspect the material to be cut and the sur‐
rounding area for stones, fence wire, metal
or other foreign objects before starting
work.Do not use the hedge trimmer in areas
6 IMPORTANT SAFETY INSTRUCTIONS English
0458-717-8221-C 11

where the cutting blades could contact such
objects.
► Take particular care when cutting next to,
against or near wire fences. Do not touch
the wire with the cutting blades.
►When working close to the ground, make
sure that no sand, grit or stones get
between the cutting blades.
►Do not cut any areas of the hedge, bush,
shrub or other vegetation that you cannot
see.
■To reduce the risk of injury to bystanders:
► Do not allow other persons in the general
work area.
► If cutting the top of a taller hedge, check the
other side of the hedge frequently for
bystanders, animals and obstructions.
■Check the cutting blades at regular short inter‐
vals during operation, or immediately if there is
a change in cutting behavior:
►Switch off the hedge trimmer and remove
the activation key.
► Check the condition, tightness and sharp‐
ness of the cutting blades.
► Inspect the hedge trimmer for loose parts
(nuts, screws, etc.) and for cracked, bent,
warped or damaged cutting blades.
Replace damaged cutting blades before
using the hedge trimmer.
►Always keep the cutting blades sharp.
■ To reduce blade friction and the buildup of dirt,
which can interfere with the proper functioning
of the hedge trimmer:
►STIHL recommends that you spray the cut‐
ting blades with a resin solvent, such as
STIHL Resin Remover and Lubricant,
before starting work.
DANGER
■To reduce risk of electrocution:
► Never operate this hedge trimmer in
the vicinity of any wires or cables
that may be carrying electric current.
► Do not rely on the hedge trimmer's
insulation against electric shock.
7 Charger Safety
7.1 Warnings and Instructions
WARNING
■To reduce the risk of fire, electric shock and
other personal injury or property damage:
► Read and follow all cautionary markings on
the charger and hedge trimmer and all
instructions in this manual before using the
charger.
► Use the STIHL LK 45 charger (power sup‐
ply) only for charging STIHL HSA 45,
FSA 45 and BGA 45 power tools. Using the
STIHL LK 45 for other purposes is prohibi‐
ted and may lead to fire, explosion or elec‐
tric shock, resulting in serious or fatal per‐
sonal injury and property damage.
► For indoor use only.
► Keep the charger dry. Protect it from
rain, water, liquids and damp condi‐
tions. Never charge a wet hedge
trimmer or use a wet charger.
►Do not handle the charger, including power
supply cord and plug, with wet hands.
► Never use a damaged or improperly func‐
tioning charger.
► Never use or charge a hedge trimmer with
a housing that is cracked, deformed, exces‐
sively hot, leaking battery fluid or otherwise
damaged. These could be signs that the
battery inside the hedge trimmer is dam‐
aged, increasing the risk of personal injury
and property damage from short circuit, fire
or explosion.
► Operate the charger indoors, only indoors,
in dry rooms and within an ambient temper‐
ature range of 32 °F to 104 °F (0 °C to
40 °C).
►Keep the charger out of the reach of chil‐
dren.
► Always plug the charger into a properly
installed electrical outlet matching the volt‐
age and electrical frequency stated on the
charger.
►If too many devices are connected to a
power strip, electrical components can be
overloaded during charging, leading to
overheating and fire. If using a power strip,
never exceed its total capacity.
►Do not operate a charger that has received
a sharp or heavy blow, has been dropped
or is otherwise damaged or not functioning
properly in any way.
►Do not attempt to repair, open or disassem‐
ble the charger. There are no user-service‐
able parts inside.
■To reduce the risk of electric shock or fire from
a short circuit:
► Make sure the hedge trimmer and charger
are completely dry before starting the
charging process.
■The charger heats up during the charging
process. To reduce the risk of fire:
English 7 Charger Safety
12 0458-717-8221-C

► Do not operate on a combustible surface
(e.g., paper, cardboard, textiles) or in a
combustible environment.
►Allow the charger to cool down normally.
Do not cover it.
■ Chargers can produce sparks which may
ignite combustible gases, liquids, vapors,
dusts or other combustible materials. To
reduce the risk of fire and explosion:
►Do not operate in a location where combus‐
tible gases, liquids, vapors, dusts or other
combustible materials are present.
■Using a damaged power supply cord or plug
may result in fire, electric shock and other per‐
sonal injury or property damage. To reduce
these risks:
► Check the charger's power supply
cord and plug regularly for damage.
If damaged, immediately disconnect
the plug from the electrical outlet.
►Replace the charger if the power supply
cord becomes damaged. The power supply
cord cannot be repaired or replaced.
►Unplug the charger from the electrical outlet
and remove it from the hedge trimmer when
not in use.
►Never jerk the power supply cord to discon‐
nect it from the electrical outlet. To unplug,
grasp the plug, not the power supply cord.
►Do not use the power supply cord for carry‐
ing or hanging up the charger.
► Make sure the power supply cord is located
or marked 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.
■An extension cord should not be used unless
absolutely necessary. Overloading an exten‐
sion cord can result in overheating and fire. If
an extension cord must be used:
►Use only a properly wired 16 gauge
(AWG 16) or heavier gauge extension cord
and the cord length should not exceed 75 ft.
►Never use an extension cord with a wattage
rating lower than the wattage on your
charger's rating plate.
►Never use an extension cord if the blades
on its plug are different from the blades on
the charger plug in number, size or shape.
►Do not link (chain) extension cords.
■ In case of fire, or if the charger or hedge trim‐
mer it is charging emits smoke, has an
unusual smell, feels hot or appears abnormal
in any other way:
►Immediately disconnect the charger from
the outlet. Contact the authorities in the
event of fire or explosion.
►Have the charger and hedge trimmer
inspected and repaired by an authorized
STIHL servicing dealer before use.
■Operation of the hedge trimmer is disabled
during the charging process to reduce the risk
of electric shock.
►Do not attempt to operate the hedge trim‐
mer during the charging process or any
time it is connected to the LK 45.
8 Maintenance, Repair and
Storage
8.1 Warnings and Instructions
WARNING
■ There are no user-authorized repairs for the
hedge trimmer or charger. 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. Please also refer to
the maintenance chart in this 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:
► Remove the activation key before
inspecting the hedge trimmer or car‐
rying out any cleaning, maintenance
or repair work, before storing, and
any other time the hedge trimmer is
not in use.
■The cutting blades are the only user-servicea‐
ble parts of the hedge trimmer. Proper mainte‐
nance will help maintain cutting performance
and reduce the risk of personal injury.
►Wear heavy-duty non-slip work gloves
when handling the cutting blades.
► Keep the cutting blades clean and sharp.
► Tighten all nuts, bolts and screws after
each use.
► Never attempt to repair damaged cutting
blades by welding, straightening or modify‐
ing the shape. This may cause parts of the
cutting blades to experience uneven or
8 Maintenance, Repair and Storage English
0458-717-8221-C 13

excessive wear or other damage that can
lead to a malfunction or breakage during
operation, resulting in serious or fatal inju‐
ries.
■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 electric shock:
► Unplug the charger from the electrical outlet
before inspecting or cleaning the charger.
► Regularly check the charger and ensure
that the insulation of the power supply cord
and plug are in good condition and show no
signs of aging (brittleness), wear or dam‐
age.
►Replace the charger if the power supply
cord becomes worn or damaged. The
power supply cord cannot be repaired or
replaced.
■To reduce the risk of short circuit and fire:
► Keep the charging socket and power supply
cord connector 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 hedge trimmer and
charger, and an increased risk of fire, electric
shock and other personal injury or property
damage.
►Remove the activation key from the hedge
trimmer before storing. Store the activation
key away from the hedge trimmer in a safe
place that is inaccessible to children and
other unauthorized users.
►Never store the hedge trimmer with the acti‐
vation key inserted.
► Before storing, always unplug the charger
from the electrical outlet and remove the
charger from the hedge trimmer.
►Store the hedge trimmer and charger
indoors in a dry, secure place that cannot
be accessed by children or other unauthor‐
ized users.
►Store the hedge trimmer only within an
ambient temperature range of 32 °F to
122 °F (0 °C to 50 °C).
9 Before Starting Work
9.1 Preparing the Hedge Trimmer
for Operation
Before starting work:
►Fully charge the hedge trimmer, 10.
► Check the controls for proper function and
condition, 14.1.
► Check the cutting attachment for damage or
other problems.
10 Charging the Hedge Trim‐
mer
10.1 Charging
WARNING
■ Read and follow the hedge trimmer and
charger safety precautions and instructions in
this manual, 6.4 and 7. Be alert for signs
that the integrated battery may be damaged.
To reduce the risk of fire and explosion, never
use or charge a hedge trimmer with a housing
that is cracked, deformed, excessively hot,
leaking battery fluid or otherwise damaged,
6.5.
WARNING
■ Since the hedge trimmer and charger heat up
during the charging process, do not charge the
hedge trimmer on a combustible surface or in
a location where combustible gases, liquids,
vapors, dusts or other combustible materials
or substances are present, 7.
To charge the hedge trimmer:
►Remove the activation key, 12.2.
4
3
5
6
12
0000-GXX-1421-A1
► Insert the charger plug into a properly installed
electrical outlet (6) with the same voltage and
electrical frequency stated on the charger's
rating plate (5).
► Push the connector (3) into the hedge trimm‐
er's charging socket (2) until it stops.
The LEDs on the hedge trimmer (1) glow
green during charging and show the state of
charge.
When the LEDs on the hedge trimmer go out,
the charging process is complete and the
charger will shut itself off.
English 9 Before Starting Work
14 0458-717-8221-C

► Remove the charger from the hedge trimmer
and disconnect the charger plug from the elec‐
trical outlet when charging is complete.
A hedge trimmer is not fully charged when it
ships from the factory. STIHL recommends that
you fully charge the hedge trimmer before using
it the first time.
Operate the charger only indoors, in dry rooms
and within an ambient temperature range of
32 °F to 104 °F (0 °C to 40 °C).
The hedge trimmer heats up during operation.
The charging process begins only after the
hedge trimmer and its integrated battery have
cooled down sufficiently.
Charging time depends on a number of factors,
including the condition of the integrated battery
and the ambient temperature. For a complete list
of approximate charging times, see
www.stihl.com/charging-times.
Operation of the hedge trimmer is disabled dur‐
ing charging and any time the hedge trimmer is
connected to the charger.
11 LED Diagnostics
11.1 Hedge Trimmer Status
LEDs on the hedge trimmer show the status of
the power tool and its integrated battery.
If three LEDs glow red continuously: the integra‐
ted battery is either too hot or too cold. Allow the
hedge trimmer to warm up or cool down gradu‐
ally at an ambient temperature of about 50 °F to
68 °F (10 °C to 20 °C).
If three LEDs flash red when you activate the
switch lever and trigger switch: the hedge trim‐
mer has an electrical malfunction. Do not operate
or charge the hedge trimmer. Have it checked by
an authorized STIHL servicing dealer before use
or storage.
For troubleshooting information, 21.
11.2 Charge Status
The LEDs also show the hedge trimmer's state
of charge.
To determine the hedge trimmer's state of
charge:
20-40%
40-60%
60-80%
80-100%
0-20%
1
0000-GXX-1422-A0
► Press the push button (1) on the hedge trim‐
mer.
The LEDs on the hedge trimmer 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.
12 Inserting and Removing
the Activation Key
12.1 Inserting the Activation Key
WARNING
■ To reduce the risk of severe personal injury
from unintended activation, never store the
activation key in the hedge trimmer.
To insert the activation key:
1
2
0000-GXX-1423-A0
► Place the hedge trimmer on a level surface.
► Insert the activation key (1) into the activation
key socket (2) with even, steady pressure until
it stops.
Inserting the activation key enables the flow of
electrical power from the integrated battery to
the motor.
11 LED Diagnostics English
0458-717-8221-C 15

12.2 Removing the Activation Key
WARNING
■ To reduce the risk of severe personal injury
from unintended activation, always remove the
activation key before assembling, transporting,
adjusting, cleaning, servicing, maintaining or
storing the hedge trimmer and any other time
it is not in use.
To remove the activation key:
► Release the trigger switch.
► Place the hedge trimmer on a level surface.
► Remove the activation key with even, steady
pressure.
► Store the activation key away from the hedge
trimmer in a safe place that is inaccessible to
children and other unauthorized users.
13 Switching the Hedge Trim‐
mer On and Off
13.1 Switching On
WARNING
■ To reduce the risk of serious or fatal injuries to
the operator or bystanders from blade contact,
keep hands, feet and other parts of the body
away from the cutting blades, 6.6.2. Do not
touch the cutting blades while the activation
key is inserted. Never touch moving cutting
blades with your hand or any part of your
body, 6.6.4.
WARNING
■ Never operate your hedge trimmer if it is modi‐
fied, damaged, improperly adjusted or main‐
tained, not completely and securely assem‐
bled or not functioning properly, 6.4. To
reduce the risk of personal injury, always wear
proper clothing and protective apparel, includ‐
ing proper eye protection, when operating your
hedge trimmer, 6.3. To reduce the risk of
serious or fatal injury from loss of control,
always hold the hedge trimmer with both
hands when you are working, 6.6.2.
Before switching on:
► Make sure you have a secure and firm footing.
► Stand upright.
► Always hold and operate the hedge trimmer
with one hand firmly on the rear or control
handle and the other hand firmly on the front
or loop handle.
To switch the hedge trimmer on:
4
3
1
2
0000-GXX-1424-A0
► Insert the activation key.
► Depress and hold the switch lever (1).
► Unlock the retaining latch (2) by pushing it for‐
ward with your thumb. Hold it in this unlocked
position.
► Depress and hold the trigger switch lock‐
out (3).
The retaining latch can be released and will
stay in the unlocked position.
► Squeeze the trigger switch (4) with your index
finger.
The cutting blades will start moving.
The motor will not switch on unless the retaining
latch is unlocked and the switch lever, trigger
switch lockout and trigger switch are pressed at
the same time.
13.2 Switching Off
WARNING
■ The cutting blades will continue to move for a
short while after the trigger switch or switch
lever is released. To avoid serious or fatal
injury, avoid contact with the moving cutting
blades. To reduce the risk of personal injury
from unintended activation or unauthorized
use, switch off the motor, ensure the cutting
blades have stopped and remove the activa‐
tion key before transporting or putting the
hedge trimmer down.
To switch the hedge trimmer off:
► Release the trigger switch and trigger switch
lockout.
Once the trigger switch and trigger switch
lockout have been released, the retaining latch
will return to its locked position and activation
of the trigger switch will be blocked.
The cutting blades will continue to move for a
short time after the trigger switch or switch lever
is released. Take care to avoid contact after
releasing the trigger switch and when setting
down the hedge trimmer.
English 13 Switching the Hedge Trimmer On and Off
16 0458-717-8221-C

14 Checking the Controls
14.1 Testing the Controls
Before starting work, confirm that the switch
lever (1), retaining latch (2), trigger switch lock‐
out (3) and trigger switch (4) are undamaged and
functioning properly:
4
3
1
2
0000-GXX-1424-A0
Retaining Latch (2), Trigger Switch Lockout (3)
and Trigger Switch (4)
WARNING
■ To reduce the risk of serious or fatal injuries,
keep hands, feet and other parts of the body
away from the cutting blades. Do not touch the
cutting blades while the activation key is inser‐
ted. Never touch moving cutting blades with
your hand or any part of your body, 6.6.2.
Keep bystanders out of the area while testing
the controls.
To test the retaining latch, trigger switch lockout
and trigger switch:
► Remove the activation key.
► Unlock the retaining latch by pushing it for‐
ward with your thumb.
► Hold the retaining latch in the unlocked posi‐
tion.
► Depress the trigger switch lockout and the trig‐
ger switch momentarily.
► Release the retaining latch, trigger switch lock‐
out and trigger switch.
The retaining latch, trigger switch lockout and
trigger switch should return to their respective
locked positions. If they do not, take the hedge
trimmer to an authorized STIHL servicing
dealer to be repaired before use.
If you can depress the trigger switch without
first unlocking the retaining latch and depress‐
ing the trigger switch lockout, take the hedge
trimmer to an authorized STIHL servicing
dealer to be repaired before use.
Switch Lever (1)
WARNING
■ To reduce the risk of serious or fatal cut inju‐
ries to the operator or bystanders from blade
contact, keep hands, feet and other parts of
the body away from the cutting blades. Do not
touch the cutting blades while the activation
key is inserted. Never touch moving cutting
blades with your hand or any part of your
body, 6.6.2. Keep bystanders out of the
area while testing the controls.
To test the switch lever:
► Insert the activation key.
► Unlock the retaining latch by pushing it for‐
ward with your thumb.
► Hold the retaining latch in the unlocked posi‐
tion.
► Depress the trigger switch lockout and the trig‐
ger switch only. Do not depress the switch
lever.
The cutting blades should not start moving. If
they do start moving, take the hedge trimmer
to an authorized STIHL servicing dealer to be
repaired before use.
► Next, hold the hedge trimmer firmly with both
hands, your fingers wrapped tightly around the
handles. Now switch on the hedge trimmer by
depressing the trigger switch lockout, the trig‐
ger switch and the switch lever momentarily.
The blades should start moving. Then release
the trigger switch or switch lever. The blades
should stop moving.
If the cutting blades do not start when you
depress the trigger switch and switch lever, or if
the do not stop after you release the trigger
switch or switch lever, remove the activation key
and take the hedge trimmer to an authorized
STIHL servicing dealer to be repaired before
use.
15 During Operation
15.1 Using the Hedge Trimmer
WARNING
■ To reduce the risk of personal injury, never
work with the hedge trimmer in the rain or in
wet or damp conditions, 6.3. Always wear
proper clothing and protective apparel, includ‐
ing proper eye protection, 6.6.2. Work care‐
fully and maintain proper control of the hedge
trimmer, 6.6.2.
14 Checking the Controls English
0458-717-8221-C 17

WARNING
■ To avoid serious or fatal injury, avoid contact
with the moving cutting blades. Never hold the
material to be cut. Never remove cut material
without first releasing the trigger switch and
removing the activation key. Release the trig‐
ger switch and remove the activation key
before clearing jammed material, 6.4.
The hedge trimmer is designed for two-handed
operation.
► Before starting work with the hedge trimmer,
remove thick branches with a hand pruning
saw, loppers, chain saw or other appropriate
tool.
► Do not cut stems, branches or other vegeta‐
tion greater than 0.32 in. (8 mm) thick.
0000-GXX-1425-A0
Cutting in a Vertical Plane
► Swing the cutting attachment from the bottom
of the hedge upwards in a controlled arc (see
illustration above).
► Lower the nose of the cutting attachment,
move along the hedge and swing the cutting
attachment up again in a controlled arc.
Cutting in a Horizontal Plane
► Hold the cutting attachment at an angle of 0°
to 10° as you move the cutting attachment
horizontally, using both sides of the cutting
attachment (see illustration above).
If the hedge trimmer is used or stored at ambient
temperatures above 86 °F (30 °C), its runtime
and performance may be reduced.
Observe all applicable laws, regulations, stand‐
ards and ordinances.
16 After Finishing Work
16.1 Preparing for Transportation or
Storage
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation or unauthorized use, switch
off the motor, ensure the cutting blades have
stopped and remove the activation key before
transporting the hedge trimmer or putting it
down.
To prepare the hedge trimmer for transportation
or storage:
►Switch off the hedge trimmer, 13.2.
►Remove the activation key, 12.2.
► Slide a blade scabbard over the cutting blades
so that it covers the entire cutting attachment.
► If the hedge trimmer became wet during oper‐
ation, allow it to dry completely before charg‐
ing or storing.
17 Transporting the Hedge
Trimmer
17.1 Hedge Trimmer
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, never transport the hedge
trimmer with the activation key inserted.
WARNING
■ Cover the entire length of the cutting blades
with a blade scabbard before transporting or
storing the hedge trimmer to reduce the risk of
cut injuries from inadvertent contact.
When transporting the hedge trimmer:
► Slide a blade scabbard over the cutting blades
so that it covers the entire cutting attachment.
0000-GXX-2048-A0
English 16 After Finishing Work
18 0458-717-8221-C

► When transporting the hedge trimmer by hand,
hold it by the loop handle with the cutting
blades pointing backwards, opposite the direc‐
tion in which you are walking.
► When transporting the hedge trimmer in a
vehicle, cover the entire length of the cutting
blades with a blade scabbard. Secure and
position the hedge trimmer to prevent turn‐
over, impact and damage.
Your hedge trimmer comes standard with a
blade scabbard.
A Note on Battery Transport
The battery inside this hedge trimmer complies
with the requirements set forth in UN-Manual of
Tests and Criteria, Part III, Subsection 38.3.
Commercial air, vessel and ground transporta‐
tion of lithium ion cells and batteries contained in
equipment is regulated. The battery inside this
hedge trimmer is classified as a UN 3481, Class
9, packaging group II product. Shipping it
requires compliance with all applicable shipping
regulations. Check with the ground, vessel, air
cargo or passenger airline to determine if trans‐
port 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 this hedge trimmer
by road to the operating site. Check and comply
with any special regulations that may apply to
your situation.
For further information please go to www.stih‐
lusa.com/battery-transportation-safety.
18 Storing the Hedge Trimmer
and Charger
18.1 Hedge Trimmer
WARNING
■ Store the hedge trimmer indoors in a dry,
secure place that is inaccessible to children
and other unauthorized users, 6.4.
Improper storage can result in unauthorized
use and damage to the hedge trimmer, 6.4.
Remove the charger from the electrical outlet
once charging is complete.
WARNING
■ If the hedge trimmer is damp or wet, dry it
thoroughly before storing to reduce the risk of
short circuit and electric shock, 6.4.
WARNING
■ High temperatures may cause the integrated
battery to generate heat, rupture, leak, ignite
or explode, resulting in severe or fatal per‐
sonal injury or property damage, 6.5. Use
and store the hedge trimmer only within an
ambient temperature range of 32 °F to 122 °F
(0 °C to 50 °C), 6.5.
When storing the hedge trimmer:
►Switch off the hedge trimmer, 13.2.
►Remove the activation key, 12.2.
►Clean the hedge trimmer, 19.1.
►Clean the cutting blades, 19.2.
► Secure and position the hedge trimmer to pre‐
vent turnover, impact and damage.
► Store the hedge trimmer indoors in a dry and
secure location, out of the reach of children
and other unauthorized persons.
► Store the activation key away from the hedge
trimmer in a safe place that is inaccessible to
children and other unauthorized users.
► Protect the hedge trimmer against dampness
and corrosive agents such as garden chemi‐
cals and de-icing salts.
► For maximum battery life, store the hedge
trimmer 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).
► If the hedge trimmer is used or stored at ambi‐
ent temperatures above 86 °F (30 °C), its run‐
time and performance may be reduced.
► Never store the hedge trimmer with the activa‐
tion key inserted.
► Before storing, always unplug the charger
from the electrical outlet and remove the
charger from the hedge trimmer.
NOTICE
■A hedge trimmer that is not stored properly
may experience deep discharge, which can
result in permanent damage. To avoid deep
discharge:
►For maximum battery life, store the hedge
trimmer with a charge between 40 % and
60 % (2 green LEDs).
►For maximum battery life, store the hedge
trimmer at an ambient temperature between
50 °F and 68 °F (10 °C and 20 °C).
18.2 Charger
To properly store the charger:
18 Storing the Hedge Trimmer and Charger English
0458-717-8221-C 19

► Disconnect the charger from the electrical out‐
let.
► Disconnect the charger from the hedge trim‐
mer.
► Store the charger indoors in a dry and secure
location.
► Keep it out of the reach of children and other
unauthorized persons.
19 Cleaning
19.1 Cleaning the Hedge Trimmer
and Charger
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, remove the activation key
before carrying out any cleaning work, 8.
Users of this hedge trimmer should carry out
only the cleaning described in this manual.
To clean the hedge trimmer and charger:
► Clean the hedge trimmer's polymer compo‐
nents with a slightly dampened cloth. Do not
use detergents or solvents. They may damage
the polymer components.
► Do not use a pressure washer to clean the
hedge trimmer or otherwise spray it with water
or other liquids.
► Keep the charger housing and electrical con‐
tacts free from foreign matter. Clean as neces‐
sary with a soft brush or soft, dry cloth. Always
unplug the charger before cleaning.
19.2 Cleaning the Cutting Blades
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, remove the activation key
before carrying out any cleaning work, 8.
Users of this hedge trimmer should carry out
only the cleaning described in this manual. To
help prevent injuries, always wear heavy-duty
work gloves when handling the hedge trimmer
or its cutting blades, 6.3.
To clean the cutting blades:
► Spray both sides of the cutting blades with a
resin solvent, such as STIHL Resin Remover
and Lubricant.
► Insert the activation key and switch on the
hedge trimmer for a few seconds to evenly
distribute the resin solvent throughout the cut‐
ting blades.
► Do not use a pressure washer to clean the
cutting blades or spray them with water or
other liquids.
20 Inspection and Mainte‐
nance
20.1 Inspecting and Maintaining the
Hedge Trimmer
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, remove the activation key
before inspecting the hedge trimmer or carry‐
ing out any maintenance, 8. Carry out only
the maintenance operations described in this
manual. There are no user-authorized repairs.
STIHL recommends that repair work be per‐
formed by authorized STIHL servicing dealers.
To properly maintain the hedge trimmer:
► Sharpen the cutting blades.
► Have worn or damaged cutting blades
replaced by an authorized STIHL servicing
dealer.
► Have worn, missing or damaged safety labels
replaced by an authorized STIHL servicing
dealer.
20.2 Inspecting and Maintaining the
Cutting Blades
WARNING
■ To reduce the risk of personal injury from unin‐
tended activation, remove the activation key
before inspecting the cutting blades or carry‐
ing out any maintenance, 8. To help pre‐
vent injuries, always wear heavy-duty work
gloves when handling the hedge trimmer or its
cutting blades, 6.3. STIHL recommends
having the cutting blades sharpened by an
authorized STIHL servicing dealer.
Although it is best to have the cutting blades
sharpened by a dealer on a workshop sharp‐
ener, it is possible to use a flat crosscut sharpen‐
ing file.
Sharpen the cutting blades when cutting per‐
formance begins to deteriorate, i.e., blades fre‐
quently snag on branches or fail to cut material
cleanly.
To sharpen the cutting blades with a file:
English 19 Cleaning
20 0458-717-8221-C