STIHL HLA 66, 86
Instruction Manual
Manual de instrucciones
WARNING
Read Instruction Manual thoroughly before use and
follow all safety precautions – improper use can cause
serious or fatal injury.
ADVERTENCIA
Antes de usar la máquina lea y siga todas las precauciones
de seguridad dadas en el manual de instrucciones – el uso
incorrecto puede causar lesiones graves o mortales.
Instruction Manual
1 - 41
Manual de instrucciones
42 - 86
Contents
English
1 Introduction
2 Guide to Using this Manual
2.1 Signal Words
2.2 Symbols in Text
3 Main Parts
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3.1 HLA 66 Hedge Trimmer and Battery
3.2 HLA 86 Hedge Trimmer and Battery
4 Safety Symbols on the Products
Original Instruction ManualPrinted on chlorine-free paper
4.1 Hedge Trimmer
4.2 Battery
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5 General Power Tool Safety Warnings
5.1 Introduction
5.2 Work Area Safety
5.3 Electrical Safety
5.4 Personal Safety
5.5 Power Tool Use and Care
5.6 Battery Tool Use and Care
5.7 Service
5.8 Hedge Trimmer Safety Warnings
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5.9 Extended-reach Hedge Trimmer Safety Warnings
6 IMPORTANT SAFETY INSTRUCTIONS
6.1 Intended Use
6.2 Operator
Printing inks contain vegetable oils, paper can be recycled.
6.3 Personal Protective Equipment
6.4 Hedge Trimmer
6.5 Using the Hedge Trimmer
7 Battery Safety
7.1 Warnings and Instructions
8 Maintenance, Repair and Storage
8.1 Warnings and Instructions
9 Before Starting Work
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9.1 Preparing the Hedge Trimmer for Operation
10 Charging the Battery
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10.1 Setting up the Charger
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10.2 Charging
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11 LED Diagnostics and Acoustic Signals
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11.1 STIHL AP Battery
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11.2 STIHL AR Backpack Battery
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12 STIHL AR Backpack Battery
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12.1 Positioning the Connecting Cord
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12.2 Putting on the Harness
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13 Assembling the Hedge Trimmer
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13.1 Mounting the Loop Handle (HLA 66 only)
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14 Inserting and Removing the Battery
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14.1 Inserting the Battery
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14.2 Removing the Battery
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15 Switching the Hedge Trimmer On and Off
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15.1 Switching On
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15.2 Switching Off
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16 Checking the Controls
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16.1 Testing the Controls
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17 During Operation
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17.1 Adjusting the Angle of the Cutting Blades
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17.2 Adjusting the Length of the Drive Tube
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(HLA 86 only)
17.3 Putting on and Adjusting the Shoulder Strap
17.4 Using the Hedge Trimmer
18 After Finishing Work
18.1 Preparing for Transportation or Storage
19 Transporting the Hedge Trimmer and Battery
19.1 Hedge Trimmer
19.2 Battery
20 Storing the Hedge Trimmer and Battery
20.1 Hedge Trimmer
20.2 Battery
21 Cleaning
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© ANDREAS STIHL AG & Co. KG 2021
0458-185-8621-A. VA4.J21.
0000009110_006_GB
0458-185-8621-A
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
1
English
1 Introduction
21.1 Cleaning the Hedge Trimmer and Battery
21.2 Cleaning the Cutting Blades
22 Inspection and Maintenance
22.1 Inspecting and Maintaining the Hedge Trimmer
22.2 Inspecting and Maintaining the Cutting Blades
23 Troubleshooting Guide
23.1 Hedge Trimmer and Battery
24 Specifications
24.1 STIHL HLA 66
24.2 STIHL HLA 86
24.3 Cutting Blades
24.4 Symbols on the Hedge Trimmer, Battery and
Charger
24.5 Engineering Improvements
24.6 FCC 15 Compliance Statement
25 Approved Harness Combinations
25.1 Harness Combinations
26 Replacement Parts and Equipment
26.1 Genuine STIHL Replacement Parts
27 Disposal
27.1 Disposal of the Power Tool
27.2 Battery Recycling
28 Limited Warranty
28.1 STIHL Incorporated Limited Warranty Policy
29 Trademarks
29.1 Registered Trademarks
29.2 Common Law Trademarks
30 Addresses
30.1 STIHL Incorporated
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1 Introduction
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Thank you for your purchase. The information contained in
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this manual will help you receive maximum performance and
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satisfaction from your hedge trimmer and, if followed, reduce
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the risk of injury from its use.
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SAVE THIS MANUAL!
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Have your authorized STIHL servicing dealer show you how
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to operate your power tool.
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Do not lend or rent the hedge trimmer without this instruction
manual. Allow only persons who fully understand the
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information in this manual to operate the hedge trimmer.
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For further information, or if you do not understand any of
the instructions in this manual, please go to
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www.stihlusa.com or contact your authorized STIHL
41
servicing dealer.
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2 Guide to Using this Manual
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41
Because a hedge trimmer is a high-speed
cutting tool, special safety precautions must be
observed to reduce the risk of personal injury.
Read this instruction manual thoroughly before
use and periodically thereafter. Follow all safety
precautions. Careless or improper use can
cause serious or fatal injury.
2.1 Signal Words
This manual contains safety information that requires your
special attention. Such information is introduced with the
following symbols and signal words:
DANGER
Indicates a hazardous situation that, if not avoided, will
result in death or serious injury.
2
0458-185-8621-A
3 Main Parts
English
WARNING
Indicates a hazardous situation that, if not avoided, could
result in death or serious injury.
NOTICE
Indicates a risk of property damage, including damage to the
machine or its individual components.
2.2 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 HLA 66 Hedge Trimmer and Battery
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#
8
9
16
#
15
1
2
3
10
11
6
5
4
14
7
0458-185-8621-A
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1Drive Tube
Hedge trimmer shaft.
2 Loop Handle
Handle for the operator's front hand.
3 Front Handle
Handle for the operator's front hand.
4 Cutting Blades
Steel blades for cutting hedges, shrubs and bushes.
0000097077_002
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English
3 Main Parts
5 Blade Scabbard
Covers the cutting blades to reduce the risk of injury from
inadvertent contact during transportation and storage.
6 Blade Adjustment Release
Unlocks the cutting blades to allow angle adjustment.
7 Blade Adjustment Grip
Used to set the cutting blades to the desired angle.
8 Battery Compartment
Holds the battery.
9 Locking Lever
Secures the battery in the battery compartment.
10 Ergo-Lever
Holds the retaining latch in the unlocked position.
11 Retaining Latch
Locks/unlocks the trigger switch.
12 Trigger Switch
Switches the motor on and off.
13 Control Handle
Handle for the operator's rear hand.
14 Carrying Ring
For connecting a harness to the hedge trimmer.
15 Push Button
Activates the battery's LEDs.
16 Battery
Supplies electrical power to the motor.
17 Battery LEDs
Indicate the battery's state of charge and display error
messages regarding potential malfunctions in the battery
or power tool.
# Rating Plate
Contains electrical information and the product's serial
number.
3.2 HLA 86 Hedge Trimmer and Battery
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7
17
6
15
#
1
2
#
3
4
9
10
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1 Carrying Ring
For connecting a harness to the hedge trimmer.
2 Front Handle
Handle for the operator's front hand.
3Drive Tube
Hedge trimmer shaft.
4 Cutting Blades
Steel blades for cutting hedges, shrubs and bushes.
5 Blade Scabbard
Covers the cutting blades to reduce the risk of injury from
inadvertent contact during transportation and storage.
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5
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0458-185-8621-A
4 Safety Symbols on the Products
English
6 Clamping Nut
For adjusting the length of the drive tube.
7 Blade Adjustment Release
Unlocks the cutting blades to allow angle adjustment.
8 Blade Adjustment Grip
Used to set the cutting blades to the desired angle.
9 Battery Compartment
Holds the battery.
10 Locking Lever
Secures the battery in the battery compartment.
11 Ergo-Lever
Holds the retaining latch in the unlocked position.
12 Retaining Latch
Locks/unlocks the trigger switch.
13 Trigger Switch
Switches the motor on and off.
14 Control Handle
Handle for the operator's rear hand.
15 Push Button
Activates the battery's LEDs.
16 Battery
Supplies electrical power to the motor.
17 Battery LEDs
Indicate the battery's state of charge and display error
messages regarding potential malfunctions in the battery
or power tool.
# Rating Plate
Contains electrical information and the product's serial
number.
4 Safety Symbols on the Products
4.1 Hedge Trimmer
The following safety symbols are found on the hedge
trimmer:
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. Wear an approved
protective helmet when there is a risk of head
injury, @ 6.3.
Wear sturdy boots with non-slip soles. Steeltoed safety boots are recommended, @ 6.3.
Always wear non-slip, heavy-duty work gloves
(e.g. made of leather or other wear resistant
material) when handling the machine or cutting
blades, @ 6.3.
To reduce the risk of cut injuries, keep hands,
feet and other body parts away from the cutting
blades, @ 6.5.4.
To reduce the risk of personal injury, keep
bystanders at least 17 ft. (5 m) away and
maintain a clearance of at least 50 ft. (15 m)
between the hedge trimmer (including any
branches it is contacting) and any electrical line
carrying live current. @ 6.5.4.
0458-185-8621-A
5
English
5 General Power Tool Safety Warnings
To reduce the risk of injury or property damage
from unintended activation, remove the battery
any time the hedge trimmer is not in use, @ 6.4.
4.2 Battery
The following safety symbols are found on the AR series
backpack battery and the AP series battery:
To reduce the risk of injury, follow the specified
safety precautions.
Read and follow all safety precautions in the
battery's instruction manual and the manual for
the STIHL tool powered by this battery. Improper
use can lead to serious or fatal personal injury or
property damage.
To reduce the risk of personal injury or property
damage from fire, explosion or burns, including
chemical burns, do not disassemble, crush,
drop, damage or heat above 212 °F (100 °C).
Never expose to fire or incinerate, @ 7.1.
To reduce the risk of personal injury or property
damage from fire, use and store only within an
ambient temperature range of 14 °F to
122 °F (- 10 °C to 50 °C), @ 7.1.
AR 900, 1000, 2000, 3000 Backpack Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Protect from rain, water, liquids and
damp conditions. Never immerse in water or
other liquids, @ 7.1.
AR L Backpack Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Never immerse in water or other
liquids, @ 7.1.
AP Series Batteries
To reduce the risk of personal injury or property
damage from a short circuit, fire or explosion,
keep dry. Never immerse in water or other
liquids, @ 7.1.
Batteries sold separately.
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, illustrations and
specifications provided with this power tool. Failure to
follow all instructions listed below may result in electric
shock, fire and/or serious injury.
￭ Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mainsoperated (corded) power tool or battery-operated (cordless)
power tool.
5.2 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.
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0458-185-8621-A
5 General Power Tool Safety Warnings
English
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 (grounded) power tools. Unmodified plugs and
matching outlets will reduce the risk of electric shock.
b)Avoid body contact with earthed or grounded surfaces,
such as pipes, radiators, ranges and refrigerators. There
is an increased risk of electric shock if your body is
earthed or grounded.
c) Do not expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric
shock.
d)Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away from
heat, oil, sharp edges or moving parts. Damaged or
entangled cords increase the risk of electric shock.
e)When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric shock.
f) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD) or
ground fault circuit interruptor (GFCI) protected supply.
Use of an RCD or GFCI reduces the risk of electric shock.
5.4 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, nonskid safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure the switch is in the
off-position before connecting to power source and/or
battery pack, picking up or carrying the tool. Carrying
power tools with your finger on the switch or energizing
power tools that have the switch on invites accidents.
d)Remove any adjusting key or wrench before turning the
power tool on. A wrench or a key left attached to a rotating
part of the power tool may result in personal injury.
e)Do not overreach. Keep proper footing and balance at all
times. This enables better control of the power tool in
unexpected situations.
f) Dress properly. Do not wear loose clothing or jewellery.
Keep your hair and clothing away from moving parts.
Loose clothes, jewellery or long hair can be caught in
moving parts.
g)If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection can
reduce dust-related hazards.
h)Do not let familiarity gained from frequent use of tools
allow you to become complacent and ignore tool safety
principles. A careless action can cause severe injury
within a fraction of a second.
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 dangerous and must be repaired.
c) Disconnect the plug from the power source and/or remove
the battery pack, if detachable, from the power tool before
making any adjustments, changing accessories, or storing
power tools. Such preventive safety measures reduce the
risk of starting the power tool accidentally.
d)Store idle power tools out of the reach of children and do
not allow persons unfamiliar with the power tool or these
instructions to operate the power tool. Power tools are
dangerous in the hands of untrained users.
0458-185-8621-A
7
English
5 General Power Tool Safety Warnings
e)Maintain power tools and accessories. Check for
misalignment or binding of moving parts, breakage of
parts and any other condition that may affect the power
tool's operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
f) Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to
bind and are easier to control.
g)Use the power tool, accessories and tool bits etc. in
accordance with these instructions, taking into account
the working conditions and the work to be performed. Use
of the power tool for operations different from those
intended could result in a hazardous situation.
h)Keep handles and grasping surfaces dry, clean and free
from oil and grease. Slippery handles and grasping
surfaces do not allow for safe handling and control of the
tool in unexpected situations.
5.6 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 designated battery
packs. Use of any other battery packs may create a risk of
injury and fire.
c) When battery pack is not in use, keep it away from other
metal objects, like paper clips, coins, keys, nails, screws
or other small metal objects that can make a connection
from one terminal to another. Shorting the battery
terminals together may cause burns or a fire.
d)Under abusive conditions, liquid may be ejected from the
battery; avoid contact. If contact accidentally occurs, flush
with water. If liquid contacts eyes, additionally seek
medical help. Liquid ejected from the battery may cause
irritation or burns.
e)Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire/explosion or risk
of injury.
f) Do not expose a battery pack or tool to fire or excessive
temperature. Exposure to fire or temperatures above
100 °C may cause explosion.
g)Follow all charging instructions and do not charge the
battery pack or tool outside the temperature range
specified in the instructions. Charging improperly or at
temperatures outside the specified range may damage the
battery and increase the risk of fire.
5.7 Service
a)Have your power tool serviced by a qualified repair person
using only identical replacement parts. This will ensure
that the safety of the power tool is maintained.
b)Never service damaged battery packs. Service of battery
packs should only be performed by the manufacturer or
authorized service provider.
5.8 Hedge Trimmer Safety Warnings
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 trimmer, always fit
the blade cover. Proper handling of the hedge trimmer will
decrease the risk of personal injury from the blades.
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d)When clearing jammed material or servicing the unit,
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.
e)Hold the hedge trimmer by insulated gripping surfaces
only, because the blade may contact hidden wiring.
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 accidentally 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.
5.9 Extended-reach Hedge Trimmer Safety
Warnings
a)To reduce the risk of electrocution, never use the
extended-reach hedge trimmer near any electrical power
lines. Contact with or use near power lines may cause
serious injury or electric shock resulting in death.
b)Always use two hands when operating the extended-
reach hedge trimmer. Hold the extended-reach hedge
trimmer with both hands to avoid loss of control.
c) Always use head protection when operating the extended-
reach hedge trimmer overhead. Falling debris can result
in serious personal injury.
6 IMPORTANT SAFETY
INSTRUCTIONS
6.1 Intended Use
WARNING
￭ This hedge trimmer is designed for trimming hedges,
shrubs and bushes in yards and gardens. Use of the
hedge trimmer for operations different than intended could
result in serious injury or death.
￭ Improper use could result in personal injury or property
damage, including damage to the hedge trimmer.
– Use the hedge trimmer and battery 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.
– Be sure to read and follow the warnings and
instructions for your battery and charger before
charging or starting work.
￭ This power tool may be powered by a STIHL AP series
battery. Alternatively, it may be powered by a STIHL
AR series backpack battery in combination with an
AP Adapter.
Batteries, chargers and other accessories are sold
separately.
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6 IMPORTANT SAFETY INSTRUCTIONS
6.2 Operator
WARNING
￭ Working with the hedge trimmer can be strenuous. The
operator must be in good physical condition and mental
health. To reduce the risk of personal injury from fatigue
and loss of control:
– Check with your doctor before using the hedge
trimmer if you have any health condition 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 judgment.
– Be alert. Do not operate the hedge trimmer when
you are tired. Take a break if you become tired.
– Do not permit minors to use the hedge trimmer.
￭ 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 consult their
physician and device manufacturer 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.
– Avoid loose-fitting jackets, scarves, neckties, 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 top and
side protection that are impact-rated and
marked as complying with ANSI Z87 "+".
– Wear an approved protective helmet when there is a
risk of head injury.
￭ Good footing is very important. To help maintain 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 wearresistant material when handling the
hedge trimmer or its cutting blades.
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6.4 Hedge Trimmer
WARNING
￭ To reduce the risk of electric shock:
– Do not immerse the hedge trimmer in water or other
fluids.
– Store the hedge trimmer indoors.
￭ 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 battery.
– Wear heavy-duty work gloves when handling 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 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 intended only for
garden and landscape maintenance. 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 vegetation. Do not
cut stems, branches or other vegetation greater than
1.3 in. (33 mm) in diameter.
– Read and follow the operating instructions in this
manual for approved applications, @ 17.
￭ To reduce the risk of personal injury to the operator and
bystanders:
– Always release the trigger switch and
remove the battery before assembling,
transporting, adjusting, inspecting,
cleaning, servicing, maintaining or
storing the hedge trimmer, and any other
time it is not in use.
– Release the trigger switch and remove the battery
before clearing jammed material.
– Never leave the hedge trimmer unattended when the
battery is inserted.
￭ Although certain unauthorized attachments may fit your
STIHL hedge trimmers, their use may be extremely
dangerous. Only attachments supplied by STIHL or
expressly approved by STIHL for use with this specific
model are recommended.
– Use only attachments supplied or expressly
approved by STIHL.
– Never modify this 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 condition and
functioning properly before continuing work.
– Check that the controls and safety devices are
working properly.
– Check the LEDs for error messages, @ 11.
– Check that the battery has not been damaged.
Never use or charge a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Never work with a damaged or malfunctioning
battery or hedge trimmer. In case of doubt, have the
hedge trimmer and battery checked by your
authorized STIHL servicing dealer.
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6 IMPORTANT SAFETY INSTRUCTIONS
￭ If the hedge trimmer or battery is damaged, not working
properly, has been left outdoors or dropped into water or
other liquid, its components may no longer function
properly and safety devices may be inoperative. To
reduce the risk of personal injury and property damage:
– Take the hedge trimmer and battery to your
authorized STIHL servicing dealer to be checked
before further operation.
￭ Genuine STIHL replacement parts are specifically
designed to match your hedge trimmer and meet safety
and performance requirements. Use of parts that are not
authorized or approved by STIHL may cause serious or
fatal injury or property damage.
– STIHL recommends that only identical STIHL
replacement parts be used.
6.5 Using the Hedge Trimmer
6.5.1 Before Operation
WARNING
￭ Misuse or unauthorized use may result in personal injury
and property damage.
– Use the hedge trimmer only as described in this
instruction manual.
￭ Using a hedge trimmer that is modified, damaged,
improperly adjusted or maintained, or not completely and
securely assembled can lead to a malfunction and
increase the risk of serious personal injury or death.
– Never operate a 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 starting work,
particularly the retaining latch, trigger switch, and
cutting blades.
– Ensure that the retaining latch and trigger switch
move freely and spring back into place when
released. The trigger switch must not engage until
the retaining latch is unlocked.
– Never attempt to modify or override the controls or
safety devices in any way.
– The cutting blades must move only when the battery
is inserted, the retaining latch is unlocked and the
trigger switch is depressed.
– If your hedge trimmer or any part is damaged 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 battery:
– Check the contacts in the battery compartment for
corrosion or other foreign matter. Keep clean.
– Never insert or use a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Read and follow the instructions on switching on the
hedge trimmer, @ 15.1.
￭ To help reduce the risk of serious personal injury or death
from unintentional starting:
– Release the trigger switch and trigger switch lockout
before inserting the battery.
– Never carry the hedge trimmer with your finger on
the trigger switch.
– Release the trigger switch before removing the
battery.
– Remove the battery before assembling,
transporting, adjusting, inspecting,
cleaning, servicing, maintaining or
storing the hedge trimmer, and any other
time it is not in use.
– Never leave the hedge trimmer unattended when the
battery is inserted.
– Never store the battery in the hedge trimmer.
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￭ Before switching on your hedge trimmer, take the
following steps to reduce the risk of personal injury, loss
of control or inadvertent contact 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 switching on the
hedge trimmer, @ 15.1.
6.5.2 Holding and Controlling the Hedge Trimmer
HLA66/HLA86
0000097082_001
HLA 66
0000-GXX-4570-A0
0458-185-8621-A
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 control:
– Always hold the hedge trimmer firmly with both
hands on the defined gripping surfaces during work.
– Wrap your fingers tightly around the handles,
keeping the handles cradled between your thumb
and forefinger (see illustrations).
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6 IMPORTANT SAFETY INSTRUCTIONS
– Position the hedge trimmer in such a way that all
parts of your body are clear of the cutting attachment
whenever the battery is inserted.
– Never use the blade adjustment grip while cutting.
￭ 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 battery.
– Release the trigger switch and remove
the battery before clearing jammed
material.
￭ To reduce the risk of serious or fatal cut injuries to the
operator or bystanders from loss of control, keep proper
footing and balance at all times:
– Never work on a ladder, roof, in a tree or while
standing on any other insecure support.
– Take special care in overgrown or wet terrain and
always watch for hidden obstacles such as tree
stumps, roots, rocks, holes and ditches to avoid
stumbling or falling.
– Be extremely cautious when working on slopes or
uneven ground.
– For better footing, always clear away fallen
branches, scrub, cuttings and other material, objects
or vegetation that can increase the danger of
slipping, tripping or falling.
– Do not overreach. Keep proper footing and balance
at all times.
￭ Working above shoulder height can be tiring. To reduce
the risk of injury from fatigue:
– Never hold the machine with your rear hand on the
control handle above shoulder height.
– Set the adjustable cutter blades to the most suitable
angle so that the unit can be held at a lower, less
tiring position while providing adequate reach.
– Take frequent breaks.
￭ To reduce the risk of serious or fatal cut injuries 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 battery 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 obstructions,
release the trigger switch immediately
and remove the battery before
attempting to free the blades.
6.5.3 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 animals should
not be allowed in the area where it is in use.
– Switch off the hedge trimmer immediately if you are
approached.
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￭ To reduce the risk of injury to bystanders and
unauthorized users:
– Never leave the hedge trimmer unattended when the
battery is inserted.
– Switch off the hedge trimmer and remove the battery
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 combustible gases, liquids,
vapors, dusts or other combustible materials and
substances. To reduce the risk of fire and explosion:
– Never operate the hedge trimmer in a location where
combustible gases, liquids, vapors, dusts or other
combustible materials and substances are present.
– Read and follow recommendations issued by
government authorities (e.g., OSHA) for identifying
and avoiding the hazards of combustible gases,
liquids, vapors, dusts or other combustible materials
and substances.
￭ Use of this hedge trimmer (including sharpening 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 EPA,
OSHA, CARB and NIOSH and other authoritative
sources on hazardous materials if you are unfamiliar
with the risks associated with the particular
substances you are cutting or with which you are
working.
￭ Inhalation of certain dusts, especially organic dusts such
as mold or pollen, can cause susceptible persons to have
an allergic or asthmatic reaction. Substantial or repeated
inhalation of dust or other airborne contaminants,
especially those with a smaller particle size, may cause
respiratory or other illnesses.
– Control dust at the source where possible.
– Always work with properly sharpened cutting blades.
– To the extent possible, operate the hedge trimmer so
that the wind or operating process directs any dust,
mist or other particulate matter raised by the hedge
trimmer away from the operator.
– When respirable dust or other particulate matter
cannot be kept at or near background levels, always
wear a respirator that is approved by NIOSH and
rated for worksite-specific conditions. Follow the
recommendations of governmental authorities (e.g.,
OSHA/NIOSH) and occupational and trade
associations.
￭ If the vegetation being cut or the surrounding ground is
coated with a chemical substance, such as pesticide or
herbicide:
– Read and follow the instructions and warnings that
accompanied the substance coating the vegetation
or surrounding ground.
6.5.4 Operating Instructions
WARNING
￭ To reduce the risk of serious or fatal cut injuries 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
battery 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 battery.
– Release the trigger switch and remove
the battery before clearing jammed
material.
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6 IMPORTANT SAFETY INSTRUCTIONS
￭ 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 battery 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 immediately and
remove the battery before attempting to
free the blades.
￭ The cutting blades continue to move for a short period
after the trigger switch 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
battery.
￭ 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
damage to the hedge trimmer:
– Inspect the material to be cut and the surrounding
area for stones, fence wire, metal or other foreign
objects before starting work. Do not use the hedge
trimmer in areas 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.
￭ The power tool has a large range. To reduce the risk of
personal or even fatal injury to bystanders from falling
objects or inadvertent contact with the moving cutting
blades of your power tool:
– Always keep bystanders at least
17 ft. (5 m) away when the
power tool is in use.
– 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 intervals during
operation, or immediately if there is a change in cutting
behavior:
– Switch off the hedge trimmer and remove the
battery.
– Check the condition, tightness and sharpness 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 cutting
blades with a resin solvent, such as STIHL Resin
Remover and Lubricant, before starting work.
DANGER
￭ Electricity can jump from one point to another by means of
arcing. Higher voltage increases the distance electricity
can arc. Electricity can also move through branches,
especially if they are wet. To reduce the risk of
electrocution:
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– Never operate this hedge trimmer in the
vicinity of any wires or cables that may
be carrying electric current. Look
carefully for concealed wires before
starting work.
– Never cut near power lines.
– Do not rely on the hedge trimmer's
insulation against electric shock. Hold
the power tool by insulated gripping
surfaces only, because the cutting
blades may contact hidden wiring.
– Maintain a clearance of at least
50 ft. (15 m) between the hedge
trimmer (including any branches
it is contacting) and any
electrical line carrying live
current.
– Before working with less
clearance, contact your electric
utility and make sure the current
is turned off.
7 Battery Safety
7.1 Warnings and Instructions
WARNING
￭ Read and follow the safety precautions on the battery and
all warnings and instructions that accompany it.
￭ Use of unauthorized batteries can damage the power tool
and result in fire, explosion and personal injury and
property damage.
– Use only genuine STIHL AR or AP series batteries
with this power tool.
￭ Use of STIHL AR or AP series batteries for any purpose
other than powering STIHL products could be extremely
dangerous.
– Use STIHL AR and AP series batteries only to power
compatible STIHL products.
￭ Use of unauthorized chargers can damage the battery and
result in fire, explosion and personal injury and property
damage.
– Charge STIHL AP series batteries only with genuine
STIHL AL 101, AL 300 or AL 500 series chargers.
– Charge STIHL AR series backpack batteries only
with genuine STIHL AL 300 or AL 500 series
chargers.
￭ The battery contains safety features and devices which, if
damaged, may allow the battery to generate heat, rupture,
leak, ignite or explode.
– Never heat the battery above 212 °F
(100 °C).
– Never incinerate or place the battery on
or near fires, stoves or other hightemperature locations.
– Never use or charge a malfunctioning, damaged,
cracked, leaking or deformed battery.
– Never open, disassemble, crush, drop, subject to
heavy impact or otherwise damage the battery.
– Never expose the battery to microwaves or high
pressures.
– Never insert objects into the battery's cooling slots.
￭ Extreme temperatures may cause the battery to generate
heat, rupture, leak, ignite or explode, resulting in severe or
fatal personal injury and property damage. Exposure to
temperatures outside the recommended temperature
range may also reduce battery life and performance.
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7 Battery Safety
– Use and store the battery only within an
ambient temperature range of 14 °F to
122 °F (-10 °C to 50 °C).
– Never store the battery in direct sunlight
or inside a vehicle in hot weather.
￭ To reduce the risk of personal injury and property damage
in the event the battery emits smoke, an unusual smell or
feels unusually hot while using, charging or storing:
– Immediately discontinue using or charging the
battery. Contact the authorities in the event of fire or
explosion.
￭ To reduce the risk of a short circuit, which could lead to
electric shock, fire and explosion:
– Keep STIHL AR 900,1000, 2000, 3000
backpack batteries dry. Protect from
rain, water and other liquids. Attach the
rain cover to a STIHL AR 1000, 2000,
3000 battery before starting work in rain
or in very damp conditions.
– If a STIHL AP or AR L battery has been
exposed to rain during work, remove it
from the product and allow it to dry
indoors. Make sure it is completely dry
before charging or using.
– Never immerse any STIHL battery in
water or other liquids.
– Never bridge the battery terminals with wires or
other metallic objects.
– Keep a battery that is not in use away from metal
objects (e.g., paper clips, nails, coins, keys).
– Never transport or store the battery in a metal
container.
– Store the battery indoors in a dry room.
– Never store the battery in damp or corrosive
environments or in conditions that could lead to
corrosion of its metal components.
– Protect the battery from exposure to corrosive
agents such as garden chemicals and de-icing salts.
– Protect the battery from exposure to conductive
liquids such as salt water.
– Do not attempt to repair, open or disassemble the
battery. There are no user-serviceable parts inside.
￭ Leaking battery fluid is potentially harmful and can cause
skin and eye irritation, chemical burns and other serious
personal injury.
– Avoid contact with skin and eyes.
– Use an inert absorbent such as sand on spilled
battery fluid.
– In the event of accidental contact, immediately rinse
the contact area thoroughly with mild soap and
water.
– If fluid gets into your eye(s): do not rub. Rinse water
over the open eye(s) for at least 15 minutes and
seek medical attention.
￭ A battery fire can be dangerous. To reduce the risk of
severe personal injury and property damage in the event
of fire:
– Evacuate the area. Fire can spread rapidly. Stay
clear of any vapors generated and maintain a safe
distance.
– Contact the fire department.
– Although water can be used to put out a battery fire,
use of a multi-purpose dry chemical fire extinguisher
is preferable.
– Consult the fire department regarding proper
disposal of a burned battery.
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8 Maintenance, Repair and Storage
8.1 Warnings and Instructions
WARNING
￭ There are no user-authorized repairs for the hedge
trimmer, battery 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.
– 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 battery before inspecting
the hedge trimmer or carrying 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-serviceable parts of
the hedge trimmer. Proper maintenance 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 modifying the shape. This
may cause parts of the cutting blades to experience
uneven or excessive wear or other damage that can
lead to a malfunction or breakage during operation,
resulting in serious or fatal injuries.
￭ Use of parts that are not authorized or approved by STIHL
may cause serious or fatal injury or property damage.
– STIHL recommends that only identical STIHL
replacement parts be used for repair or
maintenance.
￭ To reduce the risk of short circuit and fire:
– Keep the battery guides free of foreign matter. Clean
as necessary with a dry cloth or soft, dry brush.
￭ Improper storage can result in unauthorized use, damage
to the hedge trimmer and battery and charger, and an
increased risk of fire, electric shock and other personal
injury or property damage.
– Remove the battery from the hedge trimmer before
storing.
– Never store the hedge trimmer or charger with the
battery inserted.
– Store the hedge trimmer and battery and charger
indoors in a dry, secure place that cannot be
accessed by children or other unauthorized users.
– Never store the battery in the hedge trimmer, in the
charger, in a metal container or in a container with
metal objects (e.g., paper clips, nails, coins, keys).
￭ To reduce the risk of electric shock and other personal
injury or property damage when mounting the charger and
wall bracket:
– Ensure that no electrical cables, pipes or other
service lines run behind the wall where the charger
and wall bracket is to be mounted.
– Mount the charger and wall bracket only as
described in this manual.
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9 Before Starting Work
9 Before Starting Work
9.1 Preparing the Hedge Trimmer for Operation
Before starting work:
► Fully charge the battery, @ 10.2.
► Mount the loop handle (HLA 66 only), @ 13.1.
► Adjust the angle of the cutting blades, @ 17.1.
► Adjust the length of the drive tube (HLA 86 only), @ 17.2.
► Put on and adjust the harness, @ 17.3.
► Check the controls for proper function and condition,
@ 16.1.
► Check the cutting attachment for damage or other
problems.
10 Charging the Battery
10.1 Setting up the Charger
WARNING
Read and follow the safety precautions on the battery and
charger and all warnings and instructions that accompany
those products. To reduce the risk of short circuit, which
could lead to electric shock, fire and explosion, make sure
the charger and its components are dry and not damaged;
operate the charger indoors at an appropriate ambient
temperature.
WARNING
A typical household electric circuit is between 15 and 20
amps. A single STIHL AL 500 charger draws approximately
4.8 amps. A single AL 300 charger draws approximately
4.4 amps. To reduce the risk of fire from overloading an
electrical circuit:
► Ensure the electrical system is rated to withstand the
expected electrical draw before charging your battery.
► Charge multiple batteries one at a time or on separate
circuits, unless you know your circuit can handle the total
expected draw from multiple chargers.
WARNING
Since the charger heats up during the charging process, do
not operate the charger on a combustible surface or in a
location where combustible gases, liquids, vapors, dusts or
other materials and substances are present.
To set up the charger:
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3
1
► Insert the plug (3) into a properly installed electrical
outlet (4) matching the voltage and electrical frequency
stated on the charger's rating plate.
The charger runs a self-test immediately after it is plugged
in. The charger LED (1) will glow green for about 1 second,
then it will glow red briefly before going out. Once the LED
goes out, the self-test is complete and the charger is ready
to charge the battery.
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10 Charging the Battery
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► Position the power supply cord (2) so that it will not be
stepped on, tripped over, come in contact with sharp
objects or moving parts or otherwise be subjected to
damage or stress.
10.2 Charging
WARNING
STIHL batteries contain safety features and devices which,
if damaged, may allow the battery to generate heat, rupture,
leak, ignite or explode. Never charge a malfunctioning,
damaged, cracked, leaking or deformed battery, or use a
charger that has been damaged. Never insert a wet battery
or battery adapter. Never use a wet charger. Follow all
product-specific warnings and instructions accompanying
your battery and charger.
A battery is not fully charged when it ships from the factory.
STIHL recommends that you fully charge the battery before
using it the first time.
Operate the charger only indoors, in dry rooms and within an
ambient temperature range of 41 °F to 104 °F (5 °C to
40 °C).
The battery heats up during operation of the power tool. If a
hot battery is connected to the charger, it may be necessary
for it to cool down before charging starts. The charging
process begins only after the battery has cooled down
sufficiently.
Charging time depends on a number of factors, including
battery condition and the ambient temperature. For a
complete list of approximate charging times, see
www.stihl.com/charging-times.
To charge an AR battery:
► Push the plug of the connecting cord (1) into the
socket (2) of the AP Adapter (3) until it stops.
► Push the AP Adapter into the charger (5) until it stops.
The LED on the charger (4) glows green when the battery
is charging.
The LEDs on the AR battery glow green and show the
state of charge.
When the LEDs on the battery turn off, the charging
process is complete and the charger will shut itself off. The
AP Adapter can be removed from the charger.
► Disconnect the power supply cord from the electrical
outlet when the charger is not in use for extended periods
of time.
► Charge STIHL AR backpack batteries only with genuine
STIHL AL 300 or AL 500 series chargers.
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20-40%
40-60%
60-80%
80-100%
0-20%
11 LED Diagnostics and Acoustic Signals
To charge an AP battery:
► Push the battery (2) into the charger (3) until it stops.
The LED on the charger glows green when the battery is
charging.
The LEDs (1) on the AP battery glow green and show the
state of charge.
When the LEDs on the battery go out, the charging
process is complete and the charger will shut itself off. The
AP battery can be removed from the charger.
► Disconnect the power supply cord from the electrical
outlet when the charger is not in use.
► Charge STIHL AP series batteries only with genuine
STIHL AL 101, AL 300 or AL 500 series chargers.
If all 4 LEDs flash red: the battery has a
malfunction and must be replaced. Do not
attempt to charge, use or store the battery.
11.1.2 Power Tool Status
The same LEDs on the battery will indicate the status of the
power tool.
If three LEDs glow red continuously: the power tool motor is
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch:
the power tool has an electrical malfunction. Do not operate
the power tool. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 23.
11.1.3 Charge Status
The LEDs on the battery also show the battery's state of
charge.
To determine the battery's state of charge:
11 LED Diagnostics and Acoustic Signals
11.1 STIHL AP Battery
11.1.1 Battery Status
Four LEDs show the status of the battery. These LEDs can
glow or flash green or red.
22
If one LED glows red c ontinuously: the battery is
either too hot or too cold. Allow the battery to
warm up or cool down gradually at an ambient
temperature of about 50 °F to 68 °F (10 °C to
20 °C).
► Press the button (1) on the battery.
The LEDs on the battery will glow or flash green for about
5 seconds and indicate the state of charge (see
illustration).
For example:
If four green LEDs glow continuously: full charge.
If one green LED is flashing: less than 20 % charge.
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11 LED Diagnostics and Acoustic Signals
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11.2 STIHL AR Backpack Battery
11.2.1 Battery Status
Six LEDs and an acoustic signal indicate the status of the
battery.
1 A short beep
The acoustic signal works as it should.
2 Four or six (AR L) long beeps
The battery's charge is low. Recharge the battery.
3 Rapid succession of short beeps
There is a malfunction in the battery. The signal stops
automatically after a few seconds. Do not attempt to
charge, use or store the battery. Replace the battery.
11.2.2 Power Tool Status
When the battery is connected to the power tool, the same
LEDs on the battery will indicate the status of the power tool.
If three LEDs glow red continuously: the power tool motor is
too hot. Allow the motor to cool down.
If three LEDs flash red when you activate the trigger switch:
the power tool has an electrical malfunction. Do not operate
the power tool. Have it checked by an authorized STIHL
servicing dealer before use or storage.
For troubleshooting information, @ 23.
11.2.3 Charge Status
The LEDs and acoustic signals on the battery also indicate
the battery's state of charge.
To determine the battery's state of charge:
These LEDs can glow or flash green or red.
If one LED glows red c ontinuously: the battery is
either too hot or too cold. Allow the battery to
warm up or cool down gradually at an ambient
temperature of about 50 °F to 68 °F (10 °C to
20 °C).
If the four right side LEDs flash red and a rapid
succession of several short beeps is emitted: the
► Be aware that your ability to hear the acoustic signal may
be reduced when wearing hearing protection.
0458-185-8621-A
battery has a malfunction and must be replaced.
Do not attempt to charge, use or store the
battery.
► Press the button (1) on the backpack battery.
A single short beep will be emitted. The LEDs on the battery
will glow or flash green for about 5 seconds and indicate the
state of charge (see illustration).
For example:
If six green LEDs glow continuously: full charge.
If one green LED is flashing and four long beeps are emitted:
less than 20 % charge.
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D
12 STIHL AR Backpack Battery
12.1 Positioning the Connecting Cord
WARNING
To reduce the risk of injury from tripping on the connecting
cord or losing control of the power tool, always secure the
connecting cord with the hook and eye fasteners as
described below. Always position and secure the connecting
cord so that it will not interfere with the proper working
technique as described in the instruction manual for the
power tool you are using, or your ability to maintain control
of the power tool.
WARNING
Manage the cord to prevent it from contacting the
cutting/working attachment or catching on objects, which
could cause you to lose balance or control of the power tool,
resulting in serious personal injury and property damage.
The connecting cord can be secured in different positions
and adjusted to suit the height and reach of the operator.
1
2
2
A B
2
2
12 STIHL AR Backpack Battery
The length of the connecting cord can be adjusted by
making a loop around the top (Illustration C) or on the side
(Illustration D) of the backpack battery with the hook and eye
fasteners.
12.2 Putting on the Harness
WARNING
The operator must be able to remove the backpack battery
quickly in the event of an emergency. In an emergency,
open and remove the waist belt and chest strap quickly
before dropping the battery to the ground.
To ensure a proper fit:
The connecting cord can run through the guide (1) on the
shoulder strap (Illustration A), or along the back
plate (Illustration B). Secure the connecting cord to the
harness with the hook and eye fasteners (2). Always secure
the connecting cord using the guide or hook and eye
fasteners on the side of the body on which the power tool is
held and controlled. Do not allow the connecting cord to
swing across your body or hang at your side.
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► Put the backpack battery on your back.
► Fasten and adjust the waist belt (2) so that it rests
comfortably but securely on your hips.
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13 Assembling the Hedge Trimmer
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6
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► Fasten the chest strap (1) and adjust it so that it fits
comfortably but securely across your chest.
3
4
► Adjust the harness straps so that the back padding fits
snugly and securely against your back.
► Always wear the battery harness over both shoulders.
► Thread the end of the waist belt through the loops (3)
and (4).
► To remove the harness, open the quick-release fasteners
on the waist belt and chest strap and loosen the harness
straps by lifting the sliding adjusters.
To help reduce the risk of injury in the event of an
emergency, practice quickly opening the fasteners on the
waist belt and chest strap, loosening the shoulder straps and
removing the battery.
NOTICE
To avoid damage, ease the battery to the ground when
practicing. Do not allow the battery to drop to the ground and
do not throw it.
13 Assembling the Hedge Trimmer
13.1 Mounting the Loop Handle (HLA 66 only)
WARNING
To reduce the risk of injury from loss of control, ensure that
the loop handle is properly mounted and adjusted before
starting work.
To mount the loop handle:
► Switch off the hedge trimmer, @ 15.2.
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► Remove the battery, @ 14.2.
► Position one clamp (4) in the loop handle (3).
► Position the other clamp (6) against the underside of the
drive tube (5) and line up the holes in the loop handle and
clamps.
► Put washers (2) on the screws (1) and insert the screws
through the holes in the loop handle and clamps.
► Attach the square nuts (7) and tighten securely. Ensure
that the handle is tight and will not move during operation.
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14 Inserting and Removing the Battery
14 Inserting and Removing the Battery
14.1 Inserting the Battery
WARNING
Never use a malfunctioning, damaged, cracked, leaking or
deformed battery, @ 7. Use and store the battery only
within an ambient temperature range of 14 °F to 122 °F (- 10
°C to 50 °C), @ 7.
WARNING
To reduce the risk of unintended activation, never store the
battery in the hedge trimmer, @ 20.2.
To insert the battery:
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2
► Place the hedge trimmer on a level surface.
► Insert the battery (1) into the battery compartment (2) until
it stops.
The battery is properly inserted when you hear an audible
click. In this position, there is electrical contact between
the battery and the hedge trimmer.
Since a new battery is not fully charged, STIHL recommends
that you fully charge the battery before using it the first time,
@ 10.2.
14.2 Removing the Battery
WARNING
To reduce the risk of severe personal injury from unintended
activation, always remove the battery before assembling,
transporting, adjusting, cleaning, servicing, maintaining or
storing the hedge trimmer, and any other time i t is not in use.
WARNING
Use care when ejecting the battery to prevent it from falling
and causing personal injury or property damage.
To remove the battery:
► Release the trigger switch.
► Place the hedge trimmer on a level surface.
► Position your hand behind the battery.
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► Compress the locking levers (1) to eject the battery (2)
from the battery compartment.
NOTICE
Avoid exposing the battery to excessive heat or prolonged
periods of direct sunlight. Use or storage outside the
recommended ambient temperature range can reduce the
performance and/or service life of the battery.
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