STIHL HSA 56 Hedge Trimmer Instruction Manual

June 6, 2024
STIHL

Table of Contents

STIHL HSA 56

Instruction Manual

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‐ editions. 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 sustainable 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.

Guide to Using this Manual

Applicable Documentation

Local safety regulations apply.
► Read, understand and save the following documents in addition to this instruction man‐ ual:

  • Safety notes and precautions for STIHL AK battery.
  • Safety information for STIHL batteries and products with built in batteries: www.stihl.com/safety-data-sheets
Warning Notices in Text

  • 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.

  • 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 taking the precautions mentioned.

Symbols in Text
This symbol refers to a chapter in this instruction manual.

Overview

Hedge Trimmer, Battery and Charger
  1. Loop Handle
    For holding, controlling and carrying the hedge trimmer.

  2. Switch Lever
    Operated together with the trigger to switch the hedge trimmer on and off.

  3. Battery
    Compartment Accommodates the battery.

  4. Locking Lever
    Secures the battery in the battery compart‐ meant.

  5. Retaining Latch
    Operated together with the trigger lockout to unlock the trigger.

  6. Trigger Lockout
    Operated together with the retaining latch to unlock the trigger.

  7. Control Handle
    For operating, holding, and controlling the hedge trimmer.

  8. Trigger
    Operated together with the switch lever to switch the hedge trimmer on and off.

  9. Hand Guard
    Helps protect hand on loop handle from contact with the cutting blades.

  10. Cutting Blades
    Perform the cutting action.

  11. Charger
    Charges the battery.

  12. LED
    The LED indicates the operating status of the charger.

  13. Appliance Plug
    Connects cable to wall outlet.

  14. Connecting Cable
    Connects charger to appliance plug.

  15. Battery
    Supplies power to the hedge trimmer.

  16. LEDs
    Indicate state of charge and malfunctions.

  17. Button
    Activates the LEDs on the battery.

  18. Blade scabbard
    Helps protect user from contact with the cut‐ ting blades.

# Rating label with serial number

Symbols

Meanings of symbols that may be on the hedge trimmer, battery and charger:

| Retaining latch unlocks the trigger in this position.
---|---
| Retaining latch locks the trigger in this position.
| 1 LED glows red. Battery too hot or too cold.
| 4 LEDs flash red. There is a malfunc‐ tion in the battery.
| LED glows green and LEDs on battery glow or flash green. Battery is being charged.
| LED flashes red. No electrical contact between battery and charger or mal‐ function in battery or charger.
| Guaranteed sound power level accord‐ ing to directive 2000/14/EC in dB(A) in
order to make sound emissions of products comparable.
| 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.

Safety Precautions

Warning Symbols

Meanings of warning signs and labels on the hedge trimmer, battery or charger:

| Observe safety notices and take the necessary precautions.
---|---
| Read, understand and keep the User Manual.
| Wear safety glasses.
| Do not touch moving cutting blades.
| Remove the battery during work stop‐pages, transport, storage, maintenance or repair.
| Protect hedge trimmer and charger from rain and dampness.
| Protect battery from heat and fire.
| Protect the battery from rain and mois‐ture and do not immerse it in liquids.
| Observe the permitted battery temper‐ature range.

Intended Use

The STIHL HSA 56 hedge trimmer is designed for cutting hedges, shrubs, bushes, and scrub. The hedge trimmer must not be used in the rain. The STIHL AK battery supplies power to the hedge trimmer. The STIHL AL 101 charger recharges the STIHL AK battery.
WARNING

  • Batteries and chargers 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.
    ► Use the hedge trimmer with a STIHL AK battery.
    ►Recharge the STIHL AK bat‐ tery with a STIHL AL 101, AL 300 or AL 500 charger.

  • Using the hedge trimmer, battery, or the charger for purposes for which they were not designed may result in serious or fatal injuries
    and damage to property may occur.
    ► Use the hedge trimmer, battery, and charger as described in this instruction manual.

The Operator

WARNING

  • Users without adequate training or instruction cannot recognize or assess the risks involved in using the hedge trimmer, battery, and
    charger. The user or other persons may sustain serious or fatal injuries.
    ► Read, understand and save the instruction manual.
    ► If you pass the hedge trimmer, battery, and charger on to another person: 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, battery, and charger. If the user’s physical, 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, battery and charger.

  • 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 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.

Clothing and equipment

WARNING

  • Long hair may be pulled into the hedge trimmer 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 commercially with the corresponding marking.
    ► 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.

Work Area and Surroundings

Hedge Trimmer

WARNING

  • Bystanders, children, and animals cannot recognize or assess the dangers of the hedge trimmer or flying debris. Innocent bystanders, children, and animals may be seriously 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.

Battery
WARNING

  • Bystanders, children, and animals cannot recognize or assess the dangers of the battery. Bystanders, children, and animals may be seriously injured.
    ► Keep bystanders, children, and animals away from the work area.
    ► Do not leave the battery unattended.
    ► Make sure that children cannot play with the battery.

  • The battery is not protected against all ambient conditions. If the battery is exposed to certain ambient conditions, it may catch fire or explode. This can result in serious injuries and damage to property.
    ► Protect battery from heat and fire.
    ► Do not throw the battery into a fire.
    ► Use and store the battery at temper‐ atures between ‑ 10 °C and + 50 °C.
    ► Protect the battery from rain and damp – do not immerse it in fluids.
    ► Keep battery away from metallic objects.
    ► Do not expose battery to high pressure.
    ► Do not expose battery to microwaves.
    ► Protect battery from chemicals and salts.

Charger

WARNING

  • Bystanders, children, and animals are not aware of and cannot assess the dangers of a charger or electric current. Bystanders, chil‐
    dren and animals may be seriously or fatally injured.

  • Keep bystanders, children, and animals away from the work area.
    ►Make sure that children can‐ not play with the charger.

  • The charger is not waterproof. If you work in the rain or in a damp environment, an electric shock may occur. The user may be injured and the charger may be damaged.
    ► Do not operate it in the rain or in a damp environment.

  • The charger is not protected against all ambient conditions. If the charger is exposed to certain ambient conditions, it may catch fire or explode. This may result in serious injury to people and damage to property.
    ► Operate the charger in an enclosed, dry room.
    ► Do not operate the charger in a flammable environment or in an explosive environ‐ meant.
    ► Do not operate the charger on a readily combustible surface.
    ► Use and store the charger at temperatures between + 5 °C and + 40 °C.

  • The connecting cable is a trip hazard. People may be injured and the charger may be dam‐ aged.
    ► Lay the connecting cable flat on the floor.

Safe Condition

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.
    ► 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 in the hedge trimmer.
    ► Replace worn or damaged labels.
    ► If you have any doubts, be sure to consult a STIHL dealer.

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.

Battery
The battery is in safe condition when the follow‐ing conditions are met:

  • The battery is not damaged.
  • The battery is clean and dry.
  • The battery is working and has not been modi‐ fied.

WARNING

  • The battery cannot function safely if it is not in safe condition. There is a risk of serious injury to persons.
    ► Use an undamaged and functioning battery.
    ► Do not charge a damaged or defective bat‐ tery.
    ► If the battery is dirty or wet: clean the bat‐ tery and allow it to dry.
    ► Do not modify the battery.
    ► Do not insert objects into the apertures in the battery.
    ► Never connect the battery terminals to met‐ allic objects and cause a short circuit.
    ► Do not open the battery.
    ► Replace worn or damaged warning signs.

  • Fluid may leak from a damaged battery. If the fluid contacts the skin or eyes, this may cause irritation.
    ► Avoid contact with the fluid.
    ► In the event of contact with the skin: wash the affected areas with plenty of soap and water.
    ► In the event of contact with the eyes: rinse the eyes with plenty of water for at least 15 minutes and seek medical attention.

  • A damaged or defective battery may emit an unusual odour, smoke, or catch fire. This may result in serious or fatal injury to people and damage to property.
    ► If the battery emits an unusual odour or smoke: do not use the battery and keep it away from flammable materials.
    ► If the battery catches fire: try to extinguish the battery using a fire extinguisher or water.

Charger
The charger is in a safe condition if the following points are observed:

  • Charger is undamaged.
  • Charger is clean and dry.

WARNING

  • If components do not comply with safety requirements, they will no longer function properly and safety devices may be rendered
    inoperative. This can result in serious or fatal injuries.
    ► Do not use a damaged charger.
    ► If the charger is dirty or wet: Clean the charger and allow it to dry.
    ► Never attempt to modify the charger.
    ► Never insert objects in the charger’s open‐ ings.
    ► Never bridge the charger’s contacts with metallic objects (short circuit).
    ► Do not open the charger.

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 battery. Then remove the object causing the block‐ age.

  • 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 battery and contact your STIHL servicing dealer for assistance.

  • 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.
Charging

WARNING

  • A damaged or defective charger may produce an unusual smell or emit smoke during the charging process. This may result in personal injuries and damage to property.
    ► Disconnect the plug from the wall outlet.

  • The charger can overheat and cause a fire if heat dissipation is inadequate. This can result in serious or fatal injuries and damage to prop‐ erty.
    ► Do not cover the charger.

Connecting to Power Supply

Contact with live components may occur for the following reasons:

  • The connecting cable or extension cable is damaged.
  • Connecting cable plug or extension cable is damaged.
  • Wall outlet is not properly installed.

DANGER

  • Contact with live components can result in an electric shock. This can result in serious or fatal injuries.
    ► Check that the connecting cable, extension cable and their plugs are not damaged. If the connecting cable or extension cable is damaged:
    ► Do not touch damaged areas.
    ► Disconnect the plug from the wall outlet.
    ► Never touch the connecting cable, exten‐ sion cable or their plugs with wet hands.
    ► Insert the plug of the connecting cable or extension cable in a properly installed fused wall outlet with ground contact.
    ► Install the charger with a ground fault circuit interrupter (30 mA, 30 ms).

  • A damaged or unsuitable extension cable can cause an electric shock. This can result in serious or fatal injuries.
    ► Use an extension cable with the correct wire gauge,

**WARNING**

  • Overvoltage can occur in the charger if the line voltage or frequency are incorrect during charging. The charger may be damaged.
    ► Make sure the line voltage and frequency agree with the data on the charger’s rating plate.

  • A carelessly laid connecting or extension cable can be damaged and cause others to trip or fall. This can result in injuries and may damage the connecting cable or extension cable.
    ► Position and mark connecting cable and extension cable so they do not represent a trip hazard.
    ► Position the connecting and extension cables so that they are not under tension or entangled.
    ► Position the connecting and extension cables so that they cannot be damaged, kinked, pinched, or chafed.
    ► Protect the connecting cable and extension cable from heat, oil, and chemicals.
    ► Lay the connecting and extension cables on a dry surface.

  • The extension cable becomes hot during oper‐ ation. If the heat cannot dissipate, it may cause a fire.
    ► If you use a cable drum: Unwind the exten‐ sion cable to its full length.

  • If electric cables or pipes are embedded in the wall, they may be damaged when the charger is mounted on a wall. Contact with electric cables can result in an electric shock. This can result in serious injuries and damage to prop‐ erty.
    ► Check that there are no electric cables or pipes embedded in the wall.

  • If the charger is not mounted on the wall as described in this instruction manual, the charger or the battery may fall down or the
    charger may overheat. This may result in per‐ sonal injuries and damage to property.
    ► Mount the charger on the wall as described in this instruction manual.

  • If the charger is mounted on a wall with the battery inserted, the battery may fall out and be damaged. This may result in personal inju‐ ries and damage to property.
    ► Mount the charger on the wall first and then insert the battery.

Transporting

Hedge Trimmer

WARNING

  • The hedge trimmer may turn over or shift dur‐ ing transport. This may result in personal inju‐ ries and damage to property.
    ► Push the retaining latch into position
    ► Remove the battery.
    ► Fit the blade scabbard so that it completely covers the cutting blades.
    ► Secure the hedge trimmer with lashing straps or a net to prevent it turning over and moving.

Battery

WARNING

  • The battery is not protected against all ambi‐ ent conditions. The battery may be damaged if it is exposed to certain ambient conditions and damage to property may occur.
    ► Never transport a damaged battery.
    ► Store the battery in non-conductive packag‐ ing.

  • The battery may turn over or shift during trans-port. This may result in personal injuries and damage to property.
    ► Pack the battery in packaging in such a way that it cannot move.
    ► Secure the packaging so that it cannot move.

Charger

WARNING

  • The charger may turn over or move while being transported. This may result in personal injuries and damage to property.
    ► Disconnect the plug from the wall outlet.
    ► Remove the battery.
    ► Secure the charger with lashing straps, belts or a net to prevent it turning over and moving.

  • The connecting cable must not be used for carrying the charger. The connecting cable and the charger may be damaged.
    ► Wind up the connecting cable and attach it to the charger.

Storing

Hedge Trimmer

WARNING

  • Children are not aware of and cannot assess the dangers of a hedge trimmer and can be seriously injured.
    ► Push the retaining latch into position.
    ► Remove the battery.
    ► 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 on the trimmer and metal components. This can damage the hedge trimmer.
    ► Push the retaining latch into position.
    ► Remove the battery.
    ► Store the hedge trimmer in a clean and dry condition.

Battery

WARNING

  • Children are not aware of and cannot assess the dangers of the battery and can be seriously injured.
    ► Store the battery out of the reach of children.

  • The battery is not protected against all ambient conditions. The battery may be damaged if it is exposed to certain ambient conditions.
    ► Store the battery in a clean and dry condition.
    ► Store the battery in a confined space.
    ► Store the battery separately from the hedge trimmer and charger.
    ► Store the battery in non-conductive packaging.
    ► Use and store the battery at temperatures between -10°C and +50°C.

Charger

WARNING

  • Children are not aware of and cannot assess the dangers of a charger. Children may sustain serious or fatal injuries.
    ► Remove the battery.
    ► Store the charger out of the reach of children.

  • The charger is not protected against all ambient conditions. The charger may be damaged if it is exposed to certain ambient conditions.
    ► Remove the battery.
    ► If the charger is hot: Allow charger to cool down.
    ► Store the charger in a clean and dry condition.
    ► Store the charger in an enclosed location.
    ► Store the charger at a temperature between +5°C and +40°C.

  • The connecting cable must not be used for carrying or hanging up the charger. The connecting cable and the charger may be damaged.
    ► Hold the charger by the housing. A recessed handle is provided on the back of the charger.
    ► Hang the charger on the wall bracket.

Cleaning, Maintenance, and Repair

WARNING

  • The hedge trimmer may start unintentionally if the battery is left in place during cleaning, maintenance, or repair operations. This may result in serious injury to people and damage to property.
    ► Move the retaining latch to the position.
    ► Remove the battery.

  • Sharp cleaning agents, cleaning with a water jet or pointed objects can damage the hedge trimmer, the cutting blades, the battery or the charger. If the hedge trimmer, cutting blades, battery or charger are not cleaned correctly, components may no longer function properly or safety devices may be rendered inoperative. They may cause serious injury to per-sons.
    ► Clean the hedge trimmer, cutting blades, battery, and charger as described in this instruction manual.

  • If the hedge trimmer, cutting blades, battery or charger are not serviced correctly, components may no longer function properly or safety devices may be rendered inoperative. This may result in serous or fatal injury to people.
    ► Do not attempt to service or repair the hedge trimmer, battery, or charger.
    ► If the hedge trimmer, battery, or the charger 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.

Preparing Hedge Trimmer for Operation

Preparing Hedge Trimmer for Operation

Perform the following steps before starting work:
► Make sure the following components are in a safe condition:

  • Hedge trimmer, 4.6.1.
  • Cutting blades, 4.6.2.
  • Battery, 4.6.3.
  • Charger, 4.6.4.
    ► Check the battery, 9.2.
    ► Fully charge the battery, 6.2.
    ► Clean the hedge trimmer, 14.1.
    ► Check the controls, 9.1.
    ► If 3 LEDs flash red while you are checking the controls: Remove the battery and contact your STIHL servicing dealer. Malfunction in hedge trimmer.
    ► If you cannot carry out this work: Do not use your hedge trimmer and contact your STIHL servicing dealer.

Charging the Battery, LEDs

Mounting the Charger on a Wall

The charger can be mounted on a wall.

► Check the following points when mounting the charger on a wall:

  • Suitable fixing materials.
  • The charger is level. The following dimensions are maintained:
  • a = at least 100 mm
  • b (for AL 101) = 75 mm
  • b (for AL 300 and AL 500) = 120 mm
  • c = 4.5 mm
  • d = 9 mm
  • e = 2.5 mm
Charging the Battery

The charging time depends on several factors, e.g. temperature of the battery or the ambient temperature. The actual charging time may differ from the specified charging time. For specified charging times see www.stihl.com/chargingtimes. The charging process starts automatically when the plug is inserted in a wall outlet and the battery is fitted in the charger. The charger switches itself off automatically when the battery is fully charged. The battery and charger become hot during the charging process.

Charging the Battery

The charging time depends on several factors, e.g. temperature of the battery or the ambient temperature. The actual charging time may differ from the specified charging time. For specified charging times see www.stihl.com/chargingtimes. The charging process starts automatically when the plug is inserted in a wall outlet and the battery is fitted in the charger. The charger switches itself off automatically when the battery is fully charged. The battery and charger become hot during the charging process.

  • Insert the plug (6) in a convenient wall outlet (7). The charger (3) runs a self test. The LED (4) glows green for about 1 second and then red for about 1 second.

  • Fit the connecting cable (5).

  • Insert the battery (2) in the guides in the charger (3) and press it home as far as stop. The LED (4) glows green. The LEDs (1) glow
    green and the battery (2) is being charged.

  • If the LED (4) and the LEDs (1) stop glowing: The battery (2) is fully charged and can be taken out of the charger (3).

  • If the charger (3) is no longer required. Dis‐ connect the plug (6) from the wall outlet (7).

State of Charge
  • 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 battery.
LEDs on Battery

The LEDs can show the state of charge or mal‐ functions. The LEDs can glow or flash green orred. The state of charge is indicated when the LEDs glow or flash green.

  • If the LEDs glow or flash red: Troubleshooting, 17. There is a malfunction in hedge trimmer or battery.
  • LED on Charger The LED indicates the operating status of the charger. If the LED glows green, the battery is being charged.
  • If the LED flashes red: Rectify the malfunction. Malfunction in charger.

Removing and Fitting the Battery

Fitting the Battery
  • Insert the battery (1) in the battery compart‐ment (2) and press it home until you hear a click. Arrows (3) on battery (1) are still visible and battery (1) is held securely in battery compart‐ ment (2). There is no electrical contact between the hedge trimmer and battery (1).
  • Push the battery (1) into the battery compart‐ ment (2) as far as stop. The battery (1) engages with a second click and is flush with the hedge trimmer’s housing.
Removing the Battery
  • Stand the hedge trimmer on a level surface.

  • Press the locking lever (1). The battery (2) is unlocked and can be removed.

Switching the Hedge Trimmer On Off

Switching On
  • 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
  • Depress the switch lever (1) and hold it in that position.
  • Push the retaining latch (2) with your thumb to position
  • Depress the trigger lockout (3) with your hand and hold it there.
  • Pull the trigger (4) with your index finger and hold it there. The motor accelerates and the cutting blades run.
Switching Off
  • Release the switch lever, trigger, and lockout lever.
  • Wait until the cutting blades come to a complete standstill after about 1 second.
  • If the cutting blades continue to run after about 1 second: Remove the battery and contact your STIHL servicing dealer. Your hedge trimmer has a malfunction.
  • Push the retaining latch into position

Testing the Hedge Trimmer and Battery

Checking the Controls

Retaining latch, trigger lockout and trigger

  • Remove the battery.
  • Push the retaining latch into position
  • Attempt to pull the trigger without depressing the lockout lever.
  • If the trigger can be pulled: Do not use your hedge trimmer and contact your STIHL servic‐ ing dealer. Retaining latch or trigger lockout is faulty.
  • Push the retaining latch into position
  • Depress the trigger lockout lever and hold it in that position.
  • Pull the trigger.
  • Release the trigger and trigger lockout lever.
  • If the trigger or trigger lockout is stiff or does not spring back to the idle position: Do not use your hedge trimmer and contact your STIHL servicing dealer. Trigger or trigger lockout is faulty.

Switch Lever

  • Remove the battery.
  • 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

  • Fit the battery.
  • 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.
  • 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 battery 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 battery and contact your STIHL servicing dealer. Your hedge trimmer has a malfunction.
Testing the Battery
  • Press button on battery. The LEDs glow or flash.
  • If the LEDs do not glow or flash: Do not use the battery and contact your STIHL servicing dealer. There is a malfunction in the battery.

Operating the Hedge Trimmer

Holding and Controlling the Hedge Trimmer
  • 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.
Cutting
  • Use lopping shears or a chainsaw to cut out thick branches first.

  • 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.

  • 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.

After Finishing Work

After Finishing Work
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • If the hedge trimmer is wet: Allow the hedge trimmer to dry.
  • If the battery is wet: Allow the battery to dry.
  • Clean the hedge trimmer.
  • Clean the cutting blades.
  • Fit the blade scabbard so that it completely covers the cutting blades.
  • Clean the battery.

Transporting

Transporting the Hedge Trimmer
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • 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 turnover and movement.
Transporting the Battery
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • Make sure the battery is in a safe condition.
  • Observe the following points when packing the battery:
    • The packaging must be non-conductive.
    • Make sure the battery cannot shift inside the packaging.
  • Secure the packaging so that it cannot move. The battery is subject to the requirements for the transport of dangerous goods. The battery is classified as UN 3480 (lithium-ion batteries) and has been tested in accordance with UN Manual of Tests and Criteria, Part III, sub-section 38.3. For transport regulations see www.stihl.com/ safety-data-sheets
Transporting the Charger
  • Disconnect the plug from the wall outlet.
  • Remove the battery.
  • Wind up the connecting cable and attach it to the charger.
  • Transporting the charger in a vehicle: Secure the charger with lashing straps, belts or a net to prevent it turning over and moving.

Storing

Storing the Hedge Trimmer
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • 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.
Storing the Battery

STIHL recommends that you store the battery with a charge between 40% and 60% (2 LEDs glow green).

  • Observe the following points when storing the battery:
    • Battery is out of the reach of children.
    • Battery is clean and dry.
    • Battery is in an enclosed space.
    • Store the battery separately from the hedge trimmer and charger.
    • Battery is in non-conductive packaging.
    • Battery is in a temperature range between -10°C and +50°C.
Storing the Charger
  • Disconnect the mains plug from the power supply.

  • Remove the battery.

  • Wind up the connecting cable and attach it to the charger.

  • Observe the following points when storing the charger:

    • Charger is out of the reach of children.
    • The charger is clean and dry.
    • Charger is in an enclosed space.
    • Charger is stored separately, away from the battery.
    • The charger is not suspended from the con‐ necting cable or the holder (3) for the con‐ necting cable.
    • Charger is in a temperature range between + 5°C and + 40°C.

Cleaning

Cleaning the Hedge Trimmer
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • Clean the hedge trimmer with a damp cloth or STIHL resin solvent.
  • Clean vents with a paintbrush.
  • Remove foreign objects from the battery com‐ partment and clean the battery compartment with a damp cloth.
  • Clean the electrical contacts in the battery compartment with a paintbrush or soft brush.
Cleaning the Cutting Blades
  • Switch off the hedge trimmer, push retaining latch to position and remove the battery.
  • Spray both sides of blades with STIHL resin solvent.
  • Fit the battery.
  • Run the hedge trimmer for 5 seconds, . The cutting blades run. STIHL resin solvent is distributed evenly.
Cleaning the Battery

Clean the battery with a damp cloth.

Cleaning the Charger
  • Disconnect the mains plug from the power supply.
  • Clean the charger with a damp cloth.
  • Clean vents with a paintbrush.
  • Clean the charger’s electrical contacts with a paintbrush or a soft brush.

Maintenance

Sharpening the cutting blade

STIHL recommends you have the cutting blades resharpened by a STIHL dealer.

  • 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, push retaining latch to position and remove the battery.

  • 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.

Repairing

Repairing Hedge Trimmer, Battery and Charger

The hedge trimmer, cutting blades, battery and charger are not user- serviceable.

  • If the hedge trimmer or cutting blades are damaged: Do not use your hedge trimmer and contact your STIHL servicing dealer.
  • If the battery has a malfunction or is damaged: Replace the battery.
  • If the charger has a malfunction or is dam‐ aged: Replace the charger.
  • If the connecting cable has a malfunction or is damaged: Do not use the charger and have connecting cable replaced by a STIHL servicing dealer.

Troubleshooting

Troubleshooting Hedge Trimmer or Battery
Fault LEDs on the battery Cause Remedy
Hedge trimmer does not start when switched on. 1 LED flashing green. State
of charge of the battery is too low. •Charge the battery.
1 LEO emits red light. The banery is too warm or too cold. •Remove the

battery.
•Allow the battery to cool down or warm up,
3 LEDs flash red.| There is a malfunction in the hedge trimmer.| •Remove the battery.
•Clean electrical contacts in the battery compartment.
•Insert battery.
•Switch on the hedge trimmer.
•If 3 LEDs continue to flash red: Do not use your hedge trimmer and contact 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.
3 LEDs light up red.LEDs light up red.| Hedge trimmer is too hot.| •Remove the battery.
•Allow the hedge trimmer to cool down.
4 LEDs flash red.| There is a fault in the battery.| •Remove battery and reinsert it.
•Switch on the hedge trimmer.
•If 4 LEDs continue to flash red: Do not use the battery and contact your STIHL dealer for assistance.
| No electrical contact between the hedge trimmer and battery.| •Remove the battery.
•Clean electrical contacts in the battery compartment.
•Insert battery.
| Hedge trimmer or bat- tery damp.| •Allow hedge trimmer or battery to dry.
Hedge trimmer cuts out during operation.| 3 LEDs light up red.LEDs light up red.| Hedge trimmer is too hot.| •Remove the battery.
• Allow the hedge trimmer to cool down.
| | There is an electrical fault.| • Remove battery and reinsert it.
• Switch on the hedge trimmer.
Hedge trimmer runtime is too short.| | The battery is not fully charged.| • Fully charge the battery.
| The battery service life has been exceeded.| •Replace battery.
Charging does not start when the battery is inserted into the charger.| 1 LEO emits red light.| The battery is too warm or too cold.| •Leave battery inserted in charger. Charging starts automatically as soon as the permitted temperature range is reached.

Troubleshooting Charger
Condition LED on Charger Cause Remedy
Battery not being charged. LED flashes red. No electrical contact between
charger and battery. • Remove the battery.

• Clean contacts on charger.
• Fit the battery.
| | Malfunction in charger.| • Do not use the charger and contact your Sill-IL servicing dealer.

Specifications

STIHL HSA 56 Hedge Trimmer
  • Approved battery: STIHL AK
  • Weight without battery: 2.9 kg

For battery life see www.stihl.com/battery-life.

Cutting Blades
  • Tooth spacing: 30 mm
  • Cutting length: 450 mm
  • Sharpening angle: 35°
STIHL AK Battery
  • Battery technology: Lithium-ion
  • Voltage: 36 V
  • Capacity in Ah: see rating label
  • Energy content in Wh: see rating label
  • Weight in kg: see rating label
  • Permissible temperature range for operation and storage: -10°C to +50°C
Charger STIHL AL 101
  • Rated voltage: see rating plate
  • Frequency: see rating plate
  • Rated power: see rating plate
  • Charging current: see rating plate
  • Permissible temperature range for use and storage: + 5 °C to + 40 °C

The charging times are indicated at www.stihl.com/charging- times.

Extension Cords

If an extension cord is used, the cross sectional area of its conductors must meet the following minimum requirements – depending on the line voltage and length of the extension cord:

If rated voltage on the rating label is 220V to 240V:

  • Cord length up to 20 m: AWG 15 / 1.5 mm²
  • Cord length 20 m up to 50 m: AWG 13 / 2.5 mm²

If rated voltage on the rating label is 100V to 127V:

  • Cord length up to 10 m: AWG 14 / 2.0 mm²
  • Cord length 10 m up to 30 m: AWG 12 / 3.5 mm²
Sound Values and Vibration Values

The K-value for sound pressure levels is 2 dB(A). K-value for sound power levels is 2 dB(A). Kvalue for vibration level is 2 m/s².

STIHL recommends wearing ear defenders.

  • Sound pressure level Lp measured according to EN 60745-2-15: 80 dB(A).
  • Sound power level LwA measured according to EN 60745-2-15: 91 dB(A).
  • Vibration level ahv measured as specified in EN 60745-2-15
  • Control handle: 2.7 m/s². The K value for the vibration level is 2 m/s².
  • Loop handle: 1.2 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 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 when the electric power tool is switched off and the times when it is switched on but running under no load can be taken into account in the estimate.
For information on compliance with Employers’ Vibration Directive 2002/44/EC see www.stihl.com/vib.

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.

Spare Parts and Accessories

Spare parts and accessories

These symbols indicate original STIHL spare parts and original STIHL acces‐ stories. 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.

Disposal

Disposal of Hedge Trimmer,Battery and Charger

Contact your STIHL servicing dealer for information on disposal. Dispose of the hedge trimmer, battery, charger, accessories, and packaging in accord‐ ance with local regulations and environmental requirements.

EC Declaration of Conformity

STIHL HSA 56 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: HSA 56
  • Serial number: 4521

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 manufactured in compliance with the following standards in the versions valid on the date of production: 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: 91 dB(A) Guaranteed sound power level: 93 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 applied to the pruning shears. Done at Waiblingen, 03.02.2020 ANDREAS STIHL AG & Co. KG

pp
Dr. Jürgen Hoffmann, Head of Product Data,
Regulations and Licensing

STIHL AL 101 Charger Conformity Notice

This charger has been manufactured and put on the market in accordance with the following directives: 2014/35/EU, 2014/30/EU and
2011/65/EU. The year of manufacture, country of manufacture, and serial number are applied to the blower. The complete EC Declaration of Conformity is available from ANDREAS STIHL AG & Co. KG, Badstrasse 115, 71336 Waiblingen, Germany.

General Power Tool Safety Warnings

Introduction

This chapter reproduces the pre-formulated, general 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.

  • Read all the safety precautions, instructions, illustrations, and specifications accompanying this electric power tool. Failure to follow the safety warnings and instructions may result in electric shock, fire, and/or serious injury. Save all safety 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.
Work area safety

a) Keep your work area clean and well-lit. Cluttered or dark areas invite accidents.
b) Do not work with the electric power tool in potentially explosive environments in which there are inflammable liquids, gases or dusts.
Electric power tools create sparks, which can ignite dusts or fumes.
c) Keep children and other people away while you are operating the electric power tool. Dis‐ tractions can cause you to lose control of the electric power tool.

Electrical safety

a) Electric power tool plugs must match the outlet. The plug must not be modified in any way. Do not use any adapter plugs with earthed (grounded) electric power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
b) Avoid touching earthed surfaces such as pipes, radiators, ovens, and refrigerators with any part of your body. There is an increased
risk of electric shock if your body is earthed or grounded.
c) Keep electric power tools away from rain or moisture. Water entering an electric power tool will increase the risk of electric shock.
d) Do not use the connecting cable for any other purpose. Never carry or pull the electric power tool by the connecting cable or remove the plug by pulling on the cable. Keep the connecting cable away from heat, oil, sharp edges or moving parts. Damaged or entangled connecting cables increase the risk of electric shock.
e) When operating an electric power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord extension suitable for outdoor use reduces the risk of electric shock.
f) If operating an electric power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. The use of an RCD reduces the risk of electric shock.

Personal safety

a) Stay alert, watch what you are doing, and use common sense when operating an electric power tool. Do not use the electric power tool if you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the electric power tool may result in serious personal injury.
b) Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection fit for the respective type of electric power tool, and the respective job will reduce personal injuries.
c) Prevent unintentional starting. Check that the electric power tool is switched off before you connect it to the mains, pick it up or carry it. Accidents can happen if you carry the electric power tool with your finger on the ON / OFF switch or with the electric power tool switched on.
d) Remove any setting tools or wrenches before turning the electric power tool on. A tool or spanner left attached to a rotating part of an electric power tools can lead to injury.
e) Avoid placing your body in an unnatural position. Keep proper footing and balance at all times. This enables better control of the electric power tool in unexpected situations.
f) Wear suitable clothing. Do not wear loose clothing or jewelry. Keep your hair and clothes away from moving parts. Loose clothes, jew‐
elry or long hair may be caught in moving parts.
g) If dust extraction and collection devices can be mounted, they should be connected and used correctly. Use of dust collection can reduce dust-related hazards.
h) Do not be lulled into a false sense of security and do not disregard the safety rules even if you are thoroughly familiar with the electric
power tool. Carelessness can result in serious injuries within fractions of a second.

Electric power tool use and care

a) Do not force the electric power tool. Use the correct electric power tool for your application. The correct electric power tool will do the job better and safer at the rate for which it was designed.
b) Do not use an electrical power tool if its switch is defective. Any electric power tool that can‐ not be switched on or off via the switch is dangerous and must be repaired.
c) Disconnect the plug from the power source and/or take a removable battery pack out of the electric power tool before making any
adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the electric power
tool accidentally.
d) Unused electric power tools must be stored out of the reach of children. Do not let anyone use the electric power tool who is not familiar with it or has not read the instructions and advice. Electric power tools are dangerous in the hands of untrained users.
e) Maintain electric power tools and accessories with care. Check for misalignment or jamming of moving parts, breakage of parts and any other condition that may affect the functionality of the electric power tool. If damaged, have the electric power tool repaired before use. Many accidents are caused by poorly maintained electrical power tools.
f) Keep cutting tools clean and sharp. Carefully maintained cutting tools with sharp cutting edges are less likely to jam and are easier to
control.
g) Use the electric power tool, accessories, tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the electric power tool for operations different from those intended may result in a hazardous situation.
h) Keep handles and grip surfaces dry, clean, and free from oil and grease. Slippery handles and grip surfaces doe not allow proper operation and control of the electric power tool in unfore‐ seen situations.

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 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 behavior 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 (265 °F) may
cause explosion.
g) Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

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 batteries. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Hedge Trimmer Safety Warnings

General safety warnings for hedge trimmers
a) Keep all parts of your body away from the blade. Do not attempt to remove cut material or hold material to be cut while the blades are running. The blades continue to run after the trimmer is switched off. A moment of inattention while operating the hedge trimmer may result in serious personal injury.
b) Carry the hedge trimmer, with blade at standstill, by the handle. Take care not to press the switch. Carrying the hedge trimmer correctly reduces the risk of accidental startup and the resulting injury from the blade.
c) When transporting or storing the hedge trimmer, always fit the blade scabbard. Proper handling of the hedge trimmer will reduce the
risk of injury from the cutter blades.
d) Before removing trapped cuttings or servicing the machine, ensure that all switches are switched off and the battery has been removed or is switched off. Unexpected startup of the hedge trimmer while removing trapped cuttings may cause severe injuries.
e) Hold the hedge trimmer only by the insulated handles because the cutting blade may accidentally cut through hidden power lines. Blade contact with a live line can also render metal machine parts live and cause an electric shock.
f) Keep any kind of power lines away from the cutting area. Cables may be hidden in hedges or bushes and get nicked accidentally by the
blade.
g) Do not use your hedge trimmer in bad weather, in particular not in thunderstorms. This reduces the risk of being struck by lightning.

  www.stihl.com

References

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