Stihl HSA 45 User manual

HSA 45
Instruction Manual2 - 18

Contents
1 Introduction................................................. 2
2 Guide to Using this Manual.........................2
3 Overview..................................................... 2
4 Safety Precautions......................................3
5 Preparing Hedge Trimmer for Operation.... 9
6 Charging the Hedge Trimmer, LEDs...........9
7 Inserting and Removing Activation Key.... 10
8 Switching the Hedge Trimmer On/Off....... 10
9 Checking the Hedge Trimmer................... 10
10 Operating the Hedge Trimmer.................. 11
11 After Finishing Work..................................12
12 Transporting..............................................12
13 Storing.......................................................12
14 Cleaning....................................................12
15 Maintenance............................................. 13
16 Repairing...................................................13
17 Troubleshooting........................................ 13
18 Specifications............................................14
19 Spare Parts and Accessories....................15
20 Disposal.................................................... 15
21 EC Declaration of Conformity................... 15
22 UKCA Declaration of Conformity.............. 16
23 General Power Tool Safety Warnings.......16
1 Introduction
Dear Customer,
Thank you for choosing STIHL. We develop and
manufacture our quality products to meet our
customers’ requirements. The products are
designed for reliability even under extreme con‐
ditions.
STIHL also stands for premium service quality.
Our dealers guarantee competent advice and
instruction as well as comprehensive service
support.
STIHL expressly commit themselves to a sus‐
tainable and responsible handling of natural
resources. This user manual is intended to help
you use your STIHL product safely and in an
environmentally friendly manner over a long
service life.
We thank you for your confidence in us and hope
you will enjoy working with your STIHL product.
Dr. Nikolas Stihl
IMPORTANT! READ BEFORE USING AND
KEEP IN A SAFE PLACE FOR REFERENCE.
2 Guide to Using this Manual
2.1 Applicable Documentation
Local safety regulations apply.
► Read, understand and save the following
documents in addition to this instruction man‐
ual:
–Safety information for STIHL batteries and
products with built in batteries:
www.stihl.com/safety-data-sheets
2.2 Warning Notices in Text
DANGER
■ This notice refers to risks which result in seri‐
ous or fatal injury.
► Serious or fatal injuries can be avoided by
taking the precautions mentioned.
WARNING
■ This notice refers to risks which can result in
serious or fatal injury.
► Serious or fatal injuries can be avoided by
taking the precautions mentioned.
NOTICE
■ This notice refers to risks which can result in
damage to property.
► Damage to property can be avoided by tak‐
ing the precautions mentioned.
2.3 Symbols in Text
This symbol refers to a chapter in this
instruction manual.
3 Overview
3.1 Hedge Trimmer and Charging
Cable
The rechargeable battery is built into the hedge
trimmer.
English
2 0458-717-0121-C
© ANDREAS STIHL AG & Co. KG 2021
0458-717-0121-C. VA0.K21.
Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
Translation of Original Instruction Manual 0000007360_017_GB

11
13
12
910
4
3
2
56
#
1
78
15
16
17
18
#
14
0000-GXX-1444-A2
1 Switch Lever
Operated together with the trigger to switch
the hedge trimmer on and off.
2 Release Slide
Operated together with the trigger lockout to
unlock the trigger.
3 Trigger Lockout
Locks trigger in position.
4 Control Handle
For operating, holding and controlling the
hedge trimmer.
5 Button
Activates the LEDs on the hedge trimmer.
6 LEDs
Indicate hedge trimmer’s state of charge and
malfunctions.
7 Trigger
Operated together with the switch lever to
switch the hedge trimmer on and off.
8 Charging Socket
Accommodates the charger plug.
9 Activation Key
Activates the hedge trimmer.
10 Key Socket
Accommodates the activation key.
11 Loop Handle
For holding, controlling and carrying the
hedge trimmer.
12 Hand Guard
Helps protect hand on loop handle from con‐
tact with the cutting blades.
13 Cutting Blades
Perform the cutting action.
14 Charger Plug
Connects charging cable to charger socket.
15 Connecting Cable
Connects charger plug to appliance plug.
16 Appliance Plug
Connects charging cable to wall outlet.
17 Charging Cable
Serves to charge the hedge trimmer.
18 Blade guard (scabbard)
Helps protect user from contact with the cut‐
ting blades.
# Rating label with serial number
3.2 Symbols
Meanings of symbols that may be on the hedge
trimmer and charging cable:
This symbol indicates in what direction
the release slide has to be pushed.
L
W
A
Guaranteed sound power level accord‐
ing to directive 2000/14/EC in dB(A) in
order to make sound emissions of
products comparable.
LK 45
This symbol shows that an LK 45
charging cable must be used.
The data next to this symbol indicates the
energy content of the battery according to
the cell manufacturer’s specification. The
energy content available during operation
is lower.
Operate the electric appliance in a dry
place, indoors only.
Do not dispose of the product with your
household waste.
4 Safety Precautions
4.1 Warning Symbols
Meanings of warning symbols and labels on the
hedge trimmer or charging cable:
Observe safety notices and take the
necessary precautions.
Read, understand and keep the User
Manual.
4 Safety Precautions English
0458-717-0121-C 3

Wear safety glasses.
Do not touch moving cutting blades.
Always remove the activation key dur‐
ing breaks in work , transport, charg‐
ing, storage, maintenance and repairs.
Protect the hedge trimmer from rain
and moisture – do not immerse it in flu‐
ids.
Protect hedge trimmer from heat and
fire.
Observe hedge trimmer’s specified
temperature range.
4.2 Intended Use
The STIHL HSA 45 hedge trimmer is designed
for cutting hedges, shrubs, bushes and scrub.
The hedge trimmer must not be used in the rain.
A built-in battery supplies the hedge trimmer with
power.
The STIHL LK 45 charging cable recharges the
STIHL HSA 45 hedge trimmer.
WARNING
■Charging cables or power supply units not
explicitly approved for the hedge trimmer by
STIHL may cause a fire or explosion. This can
result in serious or fatal injuries and damage
to property.
►Always recharge STIHL HSA
45 hedge trimmers with a
STIHL LK 45 charging cable.
■Using the hedge trimmer or the charging cable
for purposes for which they were not designed
may result in serious or fatal injuries and dam‐
age to property.
►Use the hedge trimmer and charging cable
as described in this instruction manual.
4.3 The Operator
WARNING
■Users without adequate training or instruction
cannot recognize or assess the risks involved
in using the hedge trimmer and charging
cable. The user or other persons may sustain
serious or fatal injuries.
► Read, understand and save the
instruction manual.
► If you pass the hedge trimmer and charging
cable on to another user: Always give them
the instruction manual.
►Make sure the user meets the following
requirements:
–The user must be rested.
–The user must be in good
physical condition and
mental health to operate
and work with the hedge
trimmer and the charging
cable. If the user’s physi‐
cal, sensory or mental
ability is restricted, he or
she may work only under
the supervision of or as
instructed by a responsible
person.
–The user is able to recognize and
assess the risks involved in using the
hedge trimmer and battery.
–The user must be of legal
age or is being trained in a
trade under supervision in
accordance with national
rules and regulations.
–The user has received
instruction from a STIHL
servicing dealer or other
experienced user before
English 4 Safety Precautions
4 0458-717-0121-C

working with the hedge
trimmer for the first time.
–The user must not be under the influ‐
ence of alcohol, medication or drugs.
►If you have any queries: Contact a STIHL
servicing dealer for assistance.
4.4 Clothing and equipment
WARNING
■ Long hair may be pulled into the hedge trim‐
mer while working. This may result in serious
injury to the user.
►Tie up and confine long hair above your
shoulders.
■ Objects can be thrown at high speed during
operation. This may result in injury to the user.
► Wear close-fitting safety glasses.
Suitable safety glasses are tested in
accordance with EN 166 or national
regulations and available commer‐
cially with the corresponding mark‐
ing.
►Wear a long-sleeved, close-fitting top and
long trousers.
■ Dust can be whipped up during operation.
Whipped up dust can damage the respiratory
passages and cause allergic reactions.
►If dust is generated: Wear a dust respirator
mask.
■ Unsuitable clothing can snag on wood or
scrub and may become caught in the hedge
trimmer. Users not wearing suitable clothing
are at risk of serious injury.
►Wear close-fitting clothing.
► Remove scarves and jewelry.
■ The user may come into contact with the mov‐
ing cutting blades while working. This may
result in serious injury to the user.
►Wear robust footwear.
► Wear long trousers made from resistant
material.
■ The user may come into contact with the cut‐
ting blades during cleaning or servicing. This
may result in injury to the user.
►Wear work gloves made from resistant
material.
■ Wearing unsuitable footwear may cause the
user to slip. This may result in injury to the
user.
►Wear sturdy, closed-toed footwear with
high-grip soles.
4.5 Work Area and Surroundings
4.5.1 Hedge Trimmer
WARNING
■Innocent bystanders, children and animals
cannot recognize or assess the dangers of the
hedge trimmer or flying debris. Innocent
bystanders, children and animals may be seri‐
ously injured and damage to property may
occur.
►Keep bystanders, children and animals
away from the work area.
► Do not leave the hedge trimmer unatten‐
ded.
► Make sure that children cannot play with
the hedge trimmer.
■ The hedge trimmer is not waterproof. Working
in the rain or a damp location may result in an
electric shock. This can result in injuries to the
user and may damage the hedge trimmer.
► Do not work in the rain or a damp
location.
■ Electrical components of the hedge trimmer
can produce sparks. Sparks may cause a fire
or an explosion in an easily combustible or
explosive environment. This can result in seri‐
ous or fatal injuries and damage to property.
►Do not work in an easily combustible or
explosive environment.
4.5.2 Charging cable
WARNING
■Onlookers, children and animals may be
unaware of or unable to assess the dangers of
a charging cable or electric current. Bystand‐
ers, children and animals may be seriously or
fatally injured.
►Keep bystanders, children
and animals away from the
work area.
►Do not leave the charging
cable unattended.
►Make sure that children can‐
not play with the charging
cable.
■The charging cable is not protected against all
ambient conditions. If the charging cable is
4 Safety Precautions English
0458-717-0121-C 5

exposed to certain ambient conditions, it may
catch fire or explode. This can result in serious
injury to people and damage to property.
►Protect the charging cable from rain and
moisture.
► Operate the charging cable in a dry place,
indoors only.
► Do not operate the charging cable in an
easily combustible or explosive environ‐
ment.
►Use and store the charging cable at a tem‐
perature between 0°C and 40 °C.
■ The connecting cable is a trip hazard. This can
result in injuries and may damage the charg‐
ing cable.
►Lay the connecting cable flat on the floor.
4.6 Safe Condition
4.6.1 Hedge Trimmer
The hedge trimmer is in a safe condition if the
following conditions are fulfilled:
–The hedge trimmer is undamaged.
–Hedge trimmer is clean and dry.
–The controls function properly and have not
been modified.
–The cutting blades are correctly fitted.
–Only an original STIHL accessory for this
hedge trimmer has been fitted.
–The accessories are correctly attached.
WARNING
■If not in safe condition, components may no
longer operate correctly and safety devices
may be disabled. This may result in serous or
fatal injury to people.
►Never use a damaged hedge trimmer.
► Never recharge a damaged hedge trimmer.
► If the hedge trimmer is dirty or wet: Clean
the hedge trimmer and allow it to dry.
► Do not modify the hedge trimmer.
► If the controls do not work: Do not operate
the hedge trimmer.
► Only fit original STIHL accessories for this
hedge trimmer.
► Attach accessories as described in this
User Manual or in the User Manual for the
accessories.
►Do not insert objects into the openings of
the hedge trimmer.
► Never connect or short-circuit the keyslot
contacts with metallic objects.
► Do not open the hedge trimmer.
► Replace worn or damaged labels.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.2 Cutting Blades
The cutting blades are in a safe condition if the
following points are observed:
–Cutting blades are undamaged.
–Cutting blades are not deformed.
–Cutting blades move freely.
–Cutting blades are properly sharpened.
–Cutting blades have no burrs.
WARNING
■ If they are in an unsafe condition, parts of the
cutting blades may come off and be thrown at
high speed. This can result in serious injuries.
►Work only with undamaged cutting blades.
► Make sure the cutting blades are properly
sharpened and deburred.
► If you have any queries: Contact your
STIHL servicing dealer.
4.6.3 Charging Cable
The charging cable is in a safe condition if the
following points are observed:
–Charging cable is undamaged.
–Charging cable is clean and dry.
WARNING
■ If the product does not comply with safety
requirements, components will no longer func‐
tion properly or safety devices may be ren‐
dered inoperative. This can result in serious or
fatal injuries.
►Do not use a damaged charging cable.
► If the charging cable is dirty or wet: Clean
the charging cable and allow it to dry.
► Do not modify the charging cable.
►Never bridge the charging
cable's contacts with metallic
objects (short circuit).
►Do not open the charging cable.
4.7 Built-in Battery
WARNING
■The built-in battery is not protected against all
ambient conditions. If the built-in battery is
exposed to certain ambient conditions, it may
catch fire or explode. This can result in serious
or fatal injuries and damage to property.
► Protect hedge trimmer from heat and
fire.
► Do not throw the hedge trimmer into
a fire.
English 4 Safety Precautions
6 0458-717-0121-C

► Use and store your hedge trimmer at
temperatures between 0°C and
+50°C.
► Keep hedge trimmer away from metallic
objects.
► Protect the hedge trimmer from rain and
damp – do not immerse it in fluids.
► Do not expose hedge trimmer to high pres‐
sure.
► Do not expose hedge trimmer to micro‐
waves.
► Protect hedge trimmer from chemicals and
salts.
► Do not transport a damaged hedge trimmer.
■ Fluid may escape from a damaged battery.
The fluid can cause irritation if it contacts the
skin or eyes.
►Avoid contact with the fluid.
► 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.
■A damaged or defective battery may smell
unusual, emit smoke or burn. This can result
in serious or fatal injuries and damage to prop‐
erty.
►If the hedge trimmer smells unusual or
emits smoke: Do not use the hedge trimmer
and keep it away from combustible sub‐
stances.
►If the hedge trimmer catches fire: Extin‐
guish the hedge trimmer with a fire extin‐
guisher or water.
4.8 Operation
WARNING
■The user cannot concentrate on the work in
certain situations. The user may stumble, fall
and be seriously injured.
►Work calmly and carefully.
► If light and visibility are poor: Do not use
your hedge trimmer.
► Operate the hedge trimmer alone.
► Watch out for obstacles.
► Stand on the ground while working and
keep a good balance. If it is necessary to
work at heights: Use a lift bucket or a safe
platform.
►If you begin to feel tired: Take a break.
■ Working above shoulder height can cause you
to tire quickly. This can result in serious inju‐
ries.
►Work above shoulder height for short peri‐
ods only.
► Take regular breaks.
■ If the moving cutting blades make contact with
a hard object they can be brought to a sudden
stop. The reactive forces that occur can cause
the user to lose control of the hedge trimmer
and be seriously injured.
►Hold the hedge trimmer firmly with both
hands.
► Before starting work, check hedge for hard
objects and remove any such objects.
■ The moving cutting blades can cut the user.
This can result in serious injuries.
► Do not touch moving cutting blades.
► If the cutting blades are blocked by
an object: Switch off the hedge trim‐
mer and remove the activation key.
Then remove the object causing the
blockage.
■If the behavior of the hedge trimmer changes
during operation or feels unusual, it may no
longer be in a safe condition. This can result in
serious injuries and damage to property.
►Stop work, remove the activation key and
contact your STIHL servicing dealer.
■ Hedge trimmer vibrations may occur during
operation.
► Wear gloves.
► Take regular breaks.
► If signs of circulation problems occur: Seek
medical advice.
■ Note that the cutting blades continue to run for
about 1 second after you release the trigger.
The moving cutting blades can cut the user.
This can result in serious injuries.
►Hold the hedge trimmer firmly by the control
handle and loop handle and wait until the
cutting blades come to a complete stand‐
still.
DANGER
■Working near live electric cables can result in
accidental contact with the cutting blades and
damage the cables. This can result in serious
or fatal injuries.
►Do not work near live electric cables.
4.9 Charging
WARNING
■Contact with live components may occur for
the following reasons:
–Connecting cable is damaged.
–Plug is damaged.
–Wall outlet is not properly installed.
4 Safety Precautions English
0458-717-0121-C 7

Contact with live components can result in an
electric shock. This may result in serious or
fatal injuries.
►Check that the connecting cable and plug
are not damaged.
► Insert the plug in a properly installed wall
outlet.
■ Overvoltage can occur in the charging cable if
the line voltage or frequency are incorrect dur‐
ing charging. The charging cable may be dam‐
aged.
►Make sure the line voltage and frequency
agree with the data on the charging cable’s
rating label.
■A damaged or defective charging cable may
produce an unusual smell or emit smoke dur‐
ing the charging process. This may result in
personal injuries and damage to property.
►Disconnect the plug from the wall outlet.
■ The charging cable can overheat and cause a
fire if heat dissipation is inadequate. This can
result in serious or fatal injuries and damage
to property.
►Do not cover the charging cable.
■ If several charging cables are connected to
one wall outlet, electric cables may be over‐
loaded during the charging process. The
cables can overheat and cause a fire. This can
result in serious or fatal injuries and damage
to property.
►Connect the charging cable to a single wall
outlet.
► Do not connect the charging cable to multi‐
ple sockets.
4.10 Transporting
WARNING
■The hedge trimmer may turn over or shift dur‐
ing transport. This may result in personal inju‐
ries and damage to property.
► Remove the activation key.
► Fit the blade scabbard so that it completely
covers the cutting blades.
► Pack the hedge trimmer in packaging or a
transport box in such a way that it cannot
move.
►Secure the packaging or transport box with
lashing straps or a net so that the packag‐
ing or transport box cannot move.
4.11 Storing
4.11.1 Hedge Trimmer
WARNING
■Children are not aware of and cannot assess
the dangers of a hedge trimmer and can be
seriously injured.
► Remove the activation key.
► Fit the blade scabbard so that it completely
covers the cutting blades.
► Store the hedge trimmer out of the reach of
children.
■ Dampness can corrode the electrical contacts
in the activation key socket and metal compo‐
nents. This can damage the hedge trimmer.
► Remove the activation key.
► Store the hedge trimmer in a clean and dry
condition.
■ The hedge trimmer is not protected against all
ambient conditions. The hedge trimmer may
be damaged if it is exposed to certain ambient
conditions.
►Store the hedge trimmer in a clean and dry
condition.
► Store the hedge trimmer in a confined
space.
► Store the activation key separately from the
hedge trimmer.
4.11.2 Charging Cable
WARNING
■Children are not aware of and cannot assess
the dangers of a charging cable. Children may
sustain serious or fatal injuries.
►Keep the charging cable out of the reach of
children.
■ The charging cable is not protected against all
ambient conditions. The charging cable may
be damaged if it is exposed to certain ambient
conditions.
►If the charging cable is hot: Allow the charg‐
ing cable to cool down.
►Store the charging cable in a
clean and dry condition.
►Store the charging cable in a
confined space.
English 4 Safety Precautions
8 0458-717-0121-C

► Store the charging cable within temperature
range of 0°C to +40°C.
4.12 Cleaning, Maintenance and
Repair
WARNING
■The hedge trimmer may start unintentionally if
the activation key remains inserted during
cleaning, maintenance or repair operations.
This can result in serious injury to people and
damage to property.
► Remove activation key.
■ Harsh cleaning agents, cleaning with a water
jet, or pointed objects can damage the hedge
trimmer, the cutting blades and the charging
cable. If the hedge trimmer, cutting blades or
charging cable are not cleaned correctly, com‐
ponents may no longer function properly or
safety devices may be rendered inoperative.
This could cause serious injury to persons.
► Clean the hedge trimmer, cutting blades
and charging cable as described in this
instruction manual.
■If the hedge trimmer, cutting blades or charg‐
ing cable are not serviced or repaired cor‐
rectly, components may no longer function
properly or safety devices may be rendered
inoperative. This could result in serious or fatal
injury to people.
►Do not attempt to service or repair the
hedge trimmer or charging cable.
► If the hedge trimmer or the charging cable
require servicing or repairs: Contact your
STIHL servicing dealer for assistance.
►Maintain the cutting blades as described in
this User Manual.
■ The user can be cut by the sharp cutting
edges while cleaning or servicing the cutting
blades. This may result in injury to the user.
►Wear work gloves made from resistant
material.
5 Preparing Hedge Trimmer
for Operation
5.1 Preparing Hedge Trimmer for
Operation
The following steps must be performed before
commencing work:
► Ensure that the following components are in
safe condition:
–Hedge trimmer, 4.6.1.
–Cutting blades, 4.6.2.
–Charging cable, 4.6.3.
►Check the built-in battery, 9.2.
►Fully charge the hedge trimmer, 6.1.
►Clean the hedge trimmer, 14.1.
►Check the controls, 9.1.
► If you cannot carry out this work: Do not use
your hedge trimmer and contact your STIHL
servicing dealer.
6 Charging the Hedge Trim‐
mer, LEDs
6.1 Charging the Hedge Trimmer
The charging time depends on several factors,
e.g. temperature of the hedge trimmer or ambi‐
ent temperature. The actual charging time may
differ from the specified charging time. For speci‐
fied charging times see www.stihl.com/charging-
times.
The charging process starts
automatically when the plug is
inserted in a wall outlet and the
charging cable is connected to
the hedge trimmer. The charging
process stops automatically
when the hedge trimmer is fully
charged.
The hedge trimmer and charging cable heat up
during the charging process.
► Remove the activation key.
5
4
6
1 2
3
0000-GXX-1468-A1
► Insert the plug (5) in a convenient wall outlet
(6).
► Lay the connecting cable (4).
► Insert the charger plug (3) in the charge
socket (2).
The LEDs (1) glow green and show the state
of charge.
5 Preparing Hedge Trimmer for Operation English
0458-717-0121-C 9

► If the LEDs (1) stop glowing: Disconnect the
charger plug (3) from the charge socket (2).
The hedge trimmer is fully charged.
► Disconnect the plug (5) from the wall outlet
(6).
6.2 State of Charge
20-40%
40-60%
60-80%
80-100%
0-20%
1
0000-GXX-1422-A0
► Press the button (1).
The LEDs (5) glow green for about 5 seconds
and indicate the state of charge.
► If the LED on the right flashes green: Charge
the hedge trimmer.
6.3 LEDs
The LEDs can indicate the state of charge or
malfunctions in the hedge trimmer. The LEDs
can glow or flash green or red.
The state of charge is indicated when the LEDs
glow or flash green.
► If the LEDs glow or flash red: Troubleshooting,
17.
Malfunction in hedge trimmer.
7 Inserting and Removing
Activation Key
7.1 Inserting the Activation Key
1
2
0000-GXX-1423-A0
► Insert the activation key (1) in the socket (2).
7.2 Removing the activation key
► Stand the hedge trimmer on a level surface.
► Remove the activation key.
► Keep the activation key out of the reach of
children.
8 Switching the Hedge Trim‐
mer On/Off
8.1 Switching On
WARNING
■ The motor accelerates and the cutting blades
run regardless of the sequence in which the
switch lever and trigger are depressed. If you
depress the trigger first and then the switch
lever, you may lose control of the hedge trim‐
mer. This can result in serious injuries.
►Depress the switch lever first and then the
trigger.
4
3
1
2
0000-GXX-1424-A0
► Depress the switch lever (1) and hold it in that
position.
► Push the release slide (2) in the direction of
the switch lever (1) with your thumb and hold it
there.
► Depress the trigger lockout (3) with your hand
and hold it there.
You can let go of the release slide (2).
► Pull the trigger (4) with your index finger and
hold it there.
The motor accelerates and the cutting blades
run.
8.2 Switching Off
► Release the switch lever, trigger and lockout
lever.
► Wait until the cutting blades come to a com‐
plete standstill after about 1 second.
► If the cutting blades continue to run after about
1 second: Remove the activation key and con‐
tact your STIHL servicing dealer.
Your hedge trimmer has a malfunction.
9 Checking the Hedge Trim‐
mer
9.1 Checking the Controls
Release slide, trigger lockout and trigger
► Remove the activation key.
English 7 Inserting and Removing Activation Key
10 0458-717-0121-C

► Attempt to pull the trigger lever without
depressing the release slide and the trigger
lockout.
► If the trigger can be pulled: Do not use your
hedge trimmer and contact your STIHL servic‐
ing dealer.
Release slide or trigger lockout is faulty.
► Push the release slide (1) in the direction of
the switch lever with your thumb and hold it
there.
► Depress the trigger lockout lever and hold it in
that position.
► Pull the trigger.
► Let go of the trigger, trigger lockout and
release slide.
► If the trigger, trigger lockout or release slide is
stiff or does not spring back to the idle posi‐
tion: Do not use your hedge trimmer and con‐
tact your STIHL servicing dealer.
The trigger, trigger lockout or release slide has
a malfunction.
Switch Lever
► Remove the activation key.
► Depress the switch lever and release it again.
► If the switch lever is stiff or does not spring
back to its idle position: Do not use your
hedge trimmer and contact your STIHL servic‐
ing dealer.
The switch lever has a malfunction.
Switch on the hedge trimmer
► Insert the activation key.
► Depress the switch lever and release it again.
► If the cutting blades have run or are running:
Do not use your hedge trimmer and contact
your STIHL servicing dealer.
The trigger has a malfunction.
► Push the release slide (1) in the direction of
the switch lever with your thumb and hold it
there.
► Depress the trigger lockout lever and hold it in
that position.
► Pull the trigger and hold it there.
► If the cutting blades run: Do not use your
hedge trimmer and contact your STIHL servic‐
ing dealer.
The switch lever has a malfunction.
► Depress the switch lever and hold it in that
position.
The cutting blades run.
► If 3 LEDs flash red: Remove the activation key
and contact your STIHL servicing dealer.
There is a malfunction in the hedge trimmer.
► Release the switch lever.
The cutting blades stop running after about 1
second.
► If the cutting blades continue to run after 1
second: Remove the activation key and con‐
tact your STIHL servicing dealer.
Your hedge trimmer has a malfunction.
9.2 Checking the Built-In Battery
► Press the button.
The LEDs glow or flash.
► If the LEDs do not glow or flash: Do not use
your hedge trimmer and contact your STIHL
servicing dealer.
There is a malfunction in the built-in battery.
10 Operating the Hedge Trim‐
mer
10.1 Holding and Controlling the
Hedge Trimmer
0000-GXX-1420-A0
► Hold the hedge trimmer with one hand on the
control handle – wrap your thumb around the
control handle.
► Hold the hedge trimmer with the other hand on
the loop handle – wrap your thumb around the
loop handle.
10.2 Cutting
► Use lopping shears or a chainsaw to cut out
thick branches first.
0000-GXX-1425-A0
► Swing the hedge trimmer from the bottom
upwards in an arc while making the cut.
► Lower the nose of the hedge trimmer without
cutting.
► Walk slowly and steadily forwards.
10 Operating the Hedge Trimmer English
0458-717-0121-C 11

► Swing the hedge trimmer from the bottom
upwards in an arc while making the cut.
► Cut the other side of the hedge in the same
way.
► Hold the cutting blades at an angle of 0° to 10°
to the top of the hedge.
► Swing the hedge trimmer horizontally and in
an arc while making the cut.
► If cutting performance deteriorates: Sharpen
the cutting blades.
11 After Finishing Work
11.1 After Finishing Work
► Switch off the hedge trimmer and remove the
activation key.
► Clean the hedge trimmer.
► Clean the cutting blades.
► Fit the blade scabbard so that it completely
covers the cutting blades.
12 Transporting
12.1 Transporting the Hedge Trim‐
mer
► Switch off the hedge trimmer and remove the
activation key.
► Fit the blade scabbard so that it completely
covers the cutting blades.
Carrying the hedge trimmer
► Carry the hedge trimmer by the loop handle
with the cutting blades behind you.
Transporting the Hedge Trimmer in a vehicle
► Secure the hedge trimmer to prevent it tipping
over and moving.
► If the hedge trimmer has to be packed:
Observe the following points when packing the
hedge trimmer:
–Packaging or transport box must be non-
conductive.
–Make sure the hedge trimmer cannot shift
inside the packaging or transport box.
–Secure the packaging or transport box in
such a way that the packaging or transport
box cannot move.
Owing to the built-in battery the hedge trimmer
is subject to the requirements for transporting
dangerous goods. The hedge trimmer is clas‐
sified as UN 3481 (lithium-ion batteries in
equipment) and has been tested pursuant to
UN Manual Tests and Criteria Part III, Subsec‐
tion 38.3.
The transport regulations can be found in
www.stihl.com/safety-data-sheets.
13 Storing
13.1 Storing the Hedge Trimmer
STIHL recommends that you store the hedge
trimmer with a charge between 40% and 60% (2
LEDs glow green).
► Switch off the hedge trimmer and remove the
activation key.
► Fit the blade scabbard so that it completely
covers the cutting blades.
► Observe the following points when storing the
hedge trimmer:
–Hedge trimmer is out of the reach of chil‐
dren.
–Hedge trimmer is clean and dry.
–Hedge trimmer is in an enclosed space.
–Hedge trimmer is stored separately from the
charging cable.
–Hedge trimmer is in a temperature range
between 0°C and +50°C.
13.2 Storing the Charging Cable
► Disconnect the plug from the wall outlet.
► Observe the following points when storing the
charging cable:
–Charging cable is out of the reach of chil‐
dren.
–Charging cable is clean and dry.
–Charging cable is in an enclosed space.
–Charging cable is stored separately from the
hedge trimmer.
–Charging cable is in a temperature range
between 0°C and +40 °C.
14 Cleaning
14.1 Cleaning the Hedge Trimmer
► Switch off the hedge trimmer and remove the
activation key.
► Clean the hedge trimmer with a damp cloth or
STIHL resin solvent.
► Clean vents with a paintbrush.
14.2 Cleaning the Cutting Blades
► Switch off the hedge trimmer and remove the
activation key.
► Spray both sides of blades with STIHL resin
solvent.
► Insert the activation key.
► Run the hedge trimmer for 5 seconds.
The cutting blades run. STIHL resin solvent is
distributed evenly.
14.3 Cleaning the charging cable
► Disconnect the plug from the wall outlet.
English 11 After Finishing Work
12 0458-717-0121-C

► Disconnect the charger plug from the charge
socket.
► Clean the charging cable with a damp cloth.
15 Maintenance
15.1 Maintenance Intervals
The maintenance intervals are dependent on the
environmental and operating conditions. STIHL
recommends the following maintenance inter‐
vals:
After every 25 hours of operation
► Clean the cutting blades.
► Sharpen the cutting blades.
Every 12 months
► Have hedge trimmer checked by a STIHL
servicing dealer.
15.2 Sharpening the Cutting Blade
STIHL recommends you have the cutting blades
resharpened by a STIHL dealer.
WARNING
■ The teeth of the cutting blades are very sharp.
This may result in the user cutting themselves.
► Wear work gloves made from resistant
material.
► Switch off the hedge trimmer and remove the
activation key.
0000-GXX-1426-A0
► Use a STIHL flat file to sharpen each cutting
edge on the upper blade. The file only sharp‐
ens on the forward stroke. Maintain the pre‐
scribed sharpening angle, 18.2.
► Turn the hedge trimmer over.
► Sharpen the remaining cutting edges.
► Deburr each cutting edge from below.
► Turn the hedge trimmer over.
► Deburr the remaining cutting edges.
► Use a damp cloth to remove the filing dust.
► Spray both sides of cutting blades with STIHL
resin solvent.
► Run the hedge trimmer for 5 seconds.
The cutting blades run. STIHL resin solvent is
distributed evenly.
► If you have any doubts, be sure to consult a
STIHL dealer.
16 Repairing
16.1 Repairing Hedge Trimmer and
Charging Cable
The hedge trimmer, cutting blades or charging
cable cannot be repaired by the user.
► If the hedge trimmer or cutting blades are
damaged: Do not use your hedge trimmer and
contact your STIHL servicing dealer.
► If the charging cable is defective or damaged:
Replace the charging cable.
17 Troubleshooting
17.1 Troubleshooting Hedge Trimmer and Charging Cable
Fault LEDs on
hedge trimmer
Cause Remedy
Hedge trimmer
does not start
when switched
on.
1 LED flashing
green.
Hedge trimmer has
low charge.
► Charge the hedge trimmer.
3 LEDs light
up in red.
Hedge trimmer is too
hot.
► Remove activation key.
► Allow the hedge trimmer to cool down.
3 LEDs flash
red.
There is a malfunction
in the hedge trimmer.
► Remove activation key.
15 Maintenance English
0458-717-0121-C 13

Fault LEDs on
hedge trimmer
Cause Remedy
► Do not use your hedge trimmer and con‐
tact your STIHL servicing dealer for
assistance.
The cutting blades do
not run freely.
► Spray both sides of cutting blades with
STIHL resin solvent.
► If 3 LEDs continue to flash red: Do not
use your hedge trimmer and contact your
STIHL servicing dealer for assistance.
The hedge trimmer is
damp.
► Allow the hedge trimmer to dry.
Hedge trimmer
cuts out during
operation.
3 LEDs emit
red light.
Hedge trimmer is too
hot.
► Remove activation key.
► Allow the hedge trimmer to cool down.
There is a malfunction
in the hedge trimmer.
► Switch off the hedge trimmer, wait 5 sec‐
onds and then switch it on again.
The cutting blades do
not run freely.
► Spray both sides of cutting blades with
STIHL resin solvent.
Hedge trimmer
runtime is too
short.
The hedge trimmer is
not fully charged.
► Fully charge the hedge trimmer.
The service life of the
hedge trimmer has
been exceeded.
► Replace the hedge trimmer.
Hedge trimmer is
not charging.
3 LEDs light
up in red.
Hedge trimmer is too
hot.
► Remove activation key.
► Allow the hedge trimmer to cool down.
Malfunction in hedge
trimmer or charging
cable.
► Remove activation key.
► Contact a STIHL servicing dealer.
18 Specifications
18.1 STIHL HSA 45 Hedge Trimmer
–Weight with cutting blades: 2.3 kg
–Battery technology: lithium-ion
–Voltage: 18 V
–Capacity in Ah: see rating label
–Energy content in Wh: see rating label
–Permissible temperature range for operation
and storage: 0°C up to 50°C
If the hedge trimmer is used at temperatures
higher than 30°C, the battery runtime may be
shortened and the trimmer’s performance
reduced.
For runtime, see www.stihl.com/battery-life.
18.2 Cutting Blades
–Tooth spacing: 24.1 mm
–Cutting length: 500 mm
–Sharpening angle: 32°
18.3 STIHL LK 45 Charging Cable
–Voltage: 100-240 V, 50‑-60 Hz
–Power rating: 14.6 W
–Charge current: 0.65 A
–Permissible temperature range for operation
and storage: 0°C up to 40 °C
For charging times see www.stihl.com/charging-
times.
18.4 Sound Values and Vibration
Values
The K-value for the sound pressure levels is
2 dB(A). The K-value for the sound power levels
is 2 dB(A). K-value for vibration level is 2 m/s².
STIHL recommends wearing ear defenders.
–Sound pressure level Lp measured according
to EN 60745-2-15: 75 dB(A).
–Sound power level LwA measured according to
EN 60745-2-15: 83 dB(A).
–Vibration level ahv measured as specified in
EN 60745-2-15
–Control handle: 1.5 m/s². The K value for
the vibration level is 1.5 m/s².
–Loop handle: 1.4 m/s².
The vibration levels indicated were measured
according to a standardized test method and can
be used as a basis for comparing electric power
English 18 Specifications
14 0458-717-0121-C

tools. The vibration levels actually occurring may
vary from the values indicated, depending on the
type of application. The vibration levels indicated
can be used for an initial estimate of the vibration
stress. The actual vibration stress has to be esti‐
mated. The times can be taken into account in
the estimate when the electric power tool is
turned off and also when it is turned on but run‐
ning under no load.
For information on compliance with Employers'
Vibration Directive 2002/44/EC see
www.stihl.com/vib.
18.5 REACH
REACH is an EC regulation and stands for the
Registration, Evaluation, Authorisation and
Restriction of Chemical substances.
For information on compliance with the REACH
regulation see www.stihl.com/reach.
19 Spare Parts and Accesso‐
ries
19.1 Spare parts and accessories
These symbols indicate original STIHL
spare parts and original STIHL acces‐
sories.
STIHL recommends the use of original STIHL
spare parts and accessories.
Despite ongoing market observation, STIHL is
unable to judge the reliability, safety and suitabil‐
ity of other manufacturers' spare parts and
accessories; accordingly, STIHL cannot warrant
for the use of those parts.
Original STIHL spare parts and original STIHL
accessories are available from STIHL dealers.
20 Disposal
20.1 Disposing of Hedge Trimmer
and Charging Cable
Contact the local authorities or your STIHL
dealer for information on disposal.
Improper disposal can be harmful to health and
pollute the environment.
The hedge trimmer contains a built-in rechargea‐
ble battery which must be disposed of sepa‐
rately.
► Have hedge trimmer disposed of by a STIHL
servicing dealer.
The STIHL dealer removes the built-in battery
from the hedge trimmer for separate disposal.
► Take STIHL products including packaging to a
suitable collection point for recycling in accord‐
ance with local regulations.
► Do not dispose with domestic waste.
21 EC Declaration of Con‐
formity
21.1 STIHL HSA 45 Hedge Trimmer
ANDREAS STIHL AG & Co. KG
Badstraße 115
D-71336 Waiblingen
Germany
declares under our sole responsibility that
–Category: Cordless hedge trimmer
–Manufacturer's brand: STIHL
–Model: STIHL HSA 45
–Serial number: 4511
conforms to the relevant provisions of Directives
2011/65/EU, 2006/42/EC, 2014/30/EU and
2000/14/EC and has been developed and manu‐
factured in compliance with the following stand‐
ards in the versions valid on the date of produc‐
tion: EN 55014-1, EN 55014-2, EN 60745-1 and
EN 60745-2-15.
Applied conformity assessment procedure in
accordance with Directive 2000/14/EC, Annex V.
–Measured sound power level: 78 dB(A)
–Guaranteed sound power level: 85 dB(A)
The technical documents are stored at
ANDREAS STIHL AG & Co. KG Produktzulas‐
sung.
The year of manufacture, country of manufacture
and serial number are shown on the hedge trim‐
mer.
Waiblingen, 2021-09-08
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann, Director Product Certifica‐
tion & Regulatory Affairs
19 Spare Parts and Accessories English
0458-717-0121-C 15

22 UKCA Declaration of Con‐
formity
22.1 STIHL HSA 45 Hedge Trimmer
ANDREAS STIHL AG & Co. KG
Badstraße 115
D-71336 Waiblingen
Germany
declares under our sole responsibility that
–Category: Cordless hedge trimmer
–Manufacturer's brand: STIHL
–Model: STIHL HSA 45
–Serial number: 4511
conforms to the relevant provisions of UK regula‐
tions The Restriction of the Use of Certain Haz‐
ardous Substances in Electrical and Electronic
Equipment Regulations 2012, Supply of Machi‐
nery (Safety) Regulations 2008, Electromagnetic
Compatibility Regulations 2016 and Noise Emis‐
sion in the Environment by Equipment for use
Outdoors Regulations 2001 and has been manu‐
factured in compliance with the following stand‐
ards in the versions valid on the date of produc‐
tion: EN 55014-1, EN 55014-2, EN 60745-1, and
EN 60745-2-15.
Applied conformity assessment procedure in
accordance with UK regulations Noise Emission
in the Environment by Equipment for use Out‐
doors Regulations 2001, Schedule 8.
–Measured sound power level: 78 dB(A)
–Guaranteed sound power level: 81 dB(A)
The technical documents are stored at
ANDREAS STIHL AG & Co. KG.
The year of manufacture, country of manufacture
and serial number are shown on the hedge trim‐
mer.
Waiblingen, 15.07.2021
ANDREAS STIHL AG & Co. KG
pp
Dr. Jürgen Hoffmann, Director Product Certifica‐
tion & Regulatory Affairs
23 General Power Tool Safety
Warnings
23.1 Introduction
This chapter reproduces the pre-formulated, gen‐
eral safety precautions specified in the
IEC 62841 standard for hand-held motor-oper‐
ated electric tools.
STIHL is obliged to publish these texts.
The safety precautions and warnings on avoiding
an electric shock given under “Electrical Safety”
do not apply to STIHL cordless products.
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 "electric power tool" in the safety warn‐
ings refers to mains-operated (corded) power
tools or battery-operated (cordless) power tools.
23.2 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.
23.3 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 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.
English 22 UKCA Declaration of Conformity
16 0458-717-0121-C

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) protected supply. Use of an RCD
reduces the risk of electric shock.
23.4 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 a 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 energising
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 facillities,
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.
23.5 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.
23 General Power Tool Safety Warnings English
0458-717-0121-C 17

23.6 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
temperature above 130 °C may cause explo‐
sion.
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.
23.7 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 providers.
23.8 Hedge trimmer safety warnings
Safety instructions for hedge trimmers
a)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.
b)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.
c)When transporting or storing the hedge trim‐
mer, always fit the blade cover. Proper han‐
dling of the hedge trimmer will decrease the
risk of personal injury from the blades.
d)When clearing jammed material or servicing
the unit, make sure all power switches are off
and the power cord is disconnected. Unex‐
pected actuation of the hedge trimmer while
clearing jammed material or servicing may
result in serious personal injury.
e)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.
f)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.
g)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.
English 23 General Power Tool Safety Warnings
18 0458-717-0121-C

23 General Power Tool Safety Warnings English
0458-717-0121-C 19

www.stihl.com *04587170121C*
*04587170121C*
0458-717-0121-C
0458-717-0121-C