K 540i - Saw HUSQVARNA - Free user manual and instructions

USER MANUAL K 540i HUSQVARNA

Transportation, storage and disposal. 31

Technical data. 32

Accessories 33

Declaration of Conformity 34

Registeredtrademarks. 36

Introduction

Product description

The power cutter is a portable handheld cut-off machine.

The product is energized by a battery.

The product can be used for wet and dry operations.

Refer to Wet cutting on page 24 and Dry cutting on page 24.

The product has embedded connectivity. Refer to

Embedded connectivity on page 4.

for other tasks. The product must only be used by professional operators with experience.

Work is constantly in progress to increase your safety and efficiency during operation. Speak to your servicing dealer for more information.

Note: National/Local regulations could restrict the use of this product.

Intended use

The product is used to cut hard materials as concrete, masonry, stone and steel. Do not use the product

1. Flange, spindle arbor bushing
2. Spindle direction of rotation
3. Adjustment handle for blade guard
4. Water valve
5. Control panel
6. On/Off button
7. Accessories On/Off button (not used)
8. Power trigger lockout

9. Power trigger

10. Battery slot

11. Motor air intake
12. Rear handle
13. Front handle
14. Water nozzle
15. Blade guard
16. Cutting blade

17. Ground support
    18.Type plate

18. Belt guard

19. Water connection with filter
20. Operator's manual
21. Battery release button
22. Battery (not included)
23. Battery status
24. Indicator for state of charge
25. Warning indicator
26. Indicator for state of charge
27. Warning indicator
28. Battery charger (not included)
29. Combination wrench
30. Water connector, GARDENA
31. Vacuum attachment (not included)

Symbols on the product

WARNING: This product can be dangerous and cause serious injury or death to the operator or others. Be careful and use the product correctly.

Read the operator's manual carefully and make sure that you understand the instructions before you use this product.

Use approved protective helmet, hearing protection, eye protection and respiratory protection. Refer to Personal protective equipment on page 10.

Dust forms when cutting. The dust can cause injuries if inhaled. Use an approved respiratory protection. Always provide for good ventilation.

Sparks from the cutting blade can cause fire in fuel, wood, clothes, dry grass or other flammable materials.

WARNING! Kickbacks can be sudden, rapid and violent and can cause life threatening injuries. Read and understand the instructions in the manual before using the product. Refer to Kickback on page 17.

Make sure that the cutting blade does not have cracks or other damages.

Do not use circular saw blades.

This product complies with applicable EU Directives.

This product conforms to applicable UK regulations.

If the product features Bluetooth® wireless technology. The symbol Bluetooth® will be marked on the product name label.

Environmental mark. The product or package of the product is not domestic waste. Recycle it at a recycling location for electrical and electronic equipment.

Note: Other symbols/decals on the product refer to certification requirements for some markets.

Type plate

Row 1: Brand, Model

Row 2: Serial No. with manufacturing date: Year, Week, Sequence No.

Row 3: Product No.

Row 4: Manufacturer

Row 5: n=rated speed output shaft, /min=revolutions per minute, = blade diameter, spindle bolt thread.

Row 6: Maximum and nominal Voltage, d.c. = direct current

Row 7: Country of origin

Embedded connectivity

The cloud asset management solution Husqvarna Fleet ServicesTM gives the fleet manager an overview of all products that are connected via either embedded or aftermarket sensors. The position of the gateway or smartphone can be used to

indicate the location of connected products. The sensors record data like runtime, service intervals and more. For more information about the cloud asset management solution Husqvarna Fleet Services™, download the iOS or Android app Husqvarna Fleet Services at https://apps.apple.com/se/app/husqvarna-fleet-services/id1334672726 or https://play.google.com/store/apps/details?id=com.husqvarna.hfsmobile&hl=en. Speak to your Husqvarna sale representative for more information.

Some types of this product are connected via the embedded Husqvarna Fleet Services™ sensor that has the Bluetooth Low Energy (BLE) function. For more information regarding how to use it, refer to To use embedded connectivity with Husqvarna Fleet Services™

on page 21. For information about the BLE technology radio spectrum, refer to Embedded connectivity on page 32.

Product damage

We are not responsible for damages to our product if:

• the product is incorrectly repaired.
• the product is repaired with parts that are not from the manufacturer or not approved by the manufacturer.
• the product has an accessory that is not from the manufacturer or not approved by the manufacturer.
• the product is not repaired at an approved service center or by an approved authority.

Safety

Safety definitions

Warnings, cautions and notes are used to point out specially important parts of the manual.

WARNING: Used if there is a risk of injury or death for the operator or bystanders if the instructions in the manual are not obeyed.

CAUTION: Used if there is a risk of damage to the product, other materials or the adjacent area if the instructions in the manual are not obeyed.

Note: Used to give more information that is necessary in a given situation.

General machine safety warnings

WARNING: Read all safety warnings, instructions, illustrations and specifications provided with this machine. 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.

Note: The term "machine" in the warnings refers to your mains-operated (corded) machine or battery-operated (cordless) machine.

Work area safety

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate machine in explosive atmospheres, such as in the presence of flammable liquids, gases

or dust. Machines create sparks which may ignite the dust or fumes.

• Keep children and bystanders away while operating a machine. Distractions can cause you to lose control.

Electrical safety

• 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 risk of electric shock.
• 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.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
• 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.
• 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.
• If operating a power tool in a damp location is unavoidable, use a residual circuit interrupter (RCD) protected supply. Use of a RCD reduces the risk of electric shock

WARNING: Do not pressure wash the machine, as water can enter the electrical system or the motor and cause damage to the machine or short circuit.

Personal safety

• 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.
• Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the OFF-position before connecting to a 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.
• 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.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.
• 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.
• 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.
• The vibration emission during actual use of the power tool can differ from the declared total value depending on the ways in which the tool is used. Operators should identify safety measures to protect themselves that are based on an estimation of exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the times when the tool is switched off and when it is running idle in addition to the trigger).
• Remain at a distance from the blade when the motor is running.

Power tool use and care

• 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.

• 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.

• Disconnect the plug from the power source and/or the battery pack 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.

• 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.
• Maintain power tools. 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.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
• 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.
• 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.
• Under no circumstances should you modify the original design of the machine without approval from the manufacturer. Always use original spare parts. Unauthorized modifications and/or accessories may lead to serious injury or death to the user or others.
• Make sure that no pipes or electrical cables are routed in the working area or in the material to be cut.
• Always check and mark out where gas pipes are routed. Cutting close to gas pipes always entails danger. Make sure that sparks are not caused when cutting in view of the risk of explosion. Remain concentrated and focused on the task. Carelessness can result in serious personal injury or death.

Battery machine use and care

• 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.
• Use machines only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.

• 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.

• 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 irritations or burns.

• Do not use a battery pack or machine that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
• Do not expose a battery pack or machine to fire or excessive temperature. Exposure to fire or temperature above 130^ / 265^ may cause explosion.
• Follow all charging instructions and do not charge the battery pack or machine 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

• Have your machine serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the machine is maintained.
• Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Cut-off machine safety warning

• The guard provided with the tool must be securely attached to the power tool and positioned for maximum safety so the least amount of wheel is exposed towards the operator. Position yourself and bystanders away from the plane of the rotating wheel. The guard helps to protect operator from broken wheel fragments and accidental contact with the wheel.
• Use only bonded reinforced or diamond cut-off wheels for your power tool. Just because an accessory can be attached to your power tool, it does not assure safe operation.
• The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.
• Wheels must be used only for recommended applications. For example, do not grind with the side of the cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.
• Always use undamaged wheel flanges that are of correct diameter for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage.

• Do not use worn down reinforced wheels from larger power tools. Wheels intended for a larger power tool are not suitable for the higher speed of a smaller tool and may burst.

• The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.

• The arbour size of wheels and flanges must properly fit the spindle of the power tool. Wheels and flanges with arbour holes that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
• Do not use damaged wheels. Before each use, inspect wheels for chips and cracks. If power tool or wheel is dropped, inspect for damage or install an undamaged wheel. After inspecting and installing the wheel, position yourself and bystanders away from the plane of the rotating wheel and run the power tool at maximum no load speed for one minute. Damaged wheels will normally break apart during this test time.
• Wear personal protective equipment. Depending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and shop apron capable of stopping small workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high intensity noise may cause hearing loss.
• Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or a broken wheel may fly away and cause injury beyond immediate area of operation.
• Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring. Cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
• Position the cord clear of the spinning accessory. If you lose control, the cord may be cut or snagged and your hand or arm may be pulled into the spinning wheel.
• Never lay the power tool down until the accessory has come to a complete stop. The spinning wheel may grab the surface and pull the power tool out of your control.
• Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
• Regularly clean the power tool's air vents. The motor's fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
• Do not operate the power tool near flammable materials. Sparks could ignite these materials.

Kickback and related warnings

• Kickback is a sudden reaction to a pinched or snagged rotating wheel. Pinching or snagging causes rapid stalling of the rotating wheel which in turn causes the uncontrolled power tool to be forced in the direction opposite of the wheel's rotation at the point of the binding.
• For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel's movement at the point of pinching. Abrasive wheels may also break under these conditions.
• Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.
• Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
• Never place your hand near the rotating accessory. Accessory may kickback over your hand.
• Do not position your body in line with the rotating wheel. Kickback will propel the tool in direction opposite to the wheel's movement at the point of snagging.
• Use special care when working corners, sharp edges etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
• Do not attach a saw chain, woodcarving blade, segmented diamond wheel with a peripheral gap greater than 10mm or toothed saw blade. Such blades create frequent kickback and loss of control.
• Do not "jam" the wheel or apply excessive pressure. Do not attempt to make an excessive depth of cut. Overstressing the wheel increases the loading and susceptibility to twisting or binding of the wheel in the cut and the possibility of kickback or wheel breakage.
• When wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold the power tool motionless until the wheel comes to a complete stop. Never attempt to remove the wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take corrective action to eliminate the cause of wheel binding.
• Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully re-enter the cut. The wheel may bind, walk up or kickback if the power tool is restarted in the workpiece.

Support panels or any oversized workpiece to minimize the risk of wheel pinching and kickback. Large workpieces tend to sag under their own weight. Supports must be placed under the workpiece near the line of cut and near the edge of the workpiece on both sides of the wheel.
- Use extra caution when making a "pocket cut" into existing walls or other blind areas. The protruding wheel may cut gas or water pipes, electrical wiring or objects that can cause kickback.

General safety instructions

WARNING: Read the warning instructions that follow before you use the product.

• A power cutter is a dangerous tool if used carelessly or incorrectly and can cause serious injury or death. It is very important that you read and understand the contents of this operator's manual. It is also recommended that first time operators also obtain practical instruction before using the product.
• Do not do modifications to this product. Modifications that are not approved by the manufacturer, can cause serious injury or death.
• Do not operate the product if it is possible that other persons have done modifications to the product.
• Always use original accessories and spare parts. Accessories and spare parts that are not approved by the manufacturer, can cause serious injury or death.
• Keep the product clean. Make sure that you can clearly read signs and decals.
• Never allow children or other persons not trained in the use of the product to use or service it.
• Do not let a person operate the product unless they read and understand the contents of the operator's manual.
• Only let approved persons operate the product.
• The safety distance for the power cutter is 15m / 50 ft. Make sure that animals and bystanders are not in the work area.
• This product produces an electromagnetic field during operation. This field can under some circumstances interfere with active or passive medical implants. To decrease the risk of serious injury or death, we recommend persons with medical implants to speak to their physician and the medical implant manufacturer before operating this product.
• The information in this operator's manual is never a substitute for professional skills and experience. If you are in a situation where you feel unsafe, stop and get expert advice. Speak to your servicing dealer. Do not try any task that you feel unsure of.

WARNING: Read the warning instructions that follow before you use the product.

WARNING: A damaged battery can cause an explosion and cause injury. If the battery has a deformation or is damaged, speak to an approved Husqvarna service agent.

• Only use the Husqvarna BLi batteries that we recommend for your product. The batteries are software encrypted.
• Use only original batteries for this product. There is a risk of explosion if the batteries are replaced with a battery of incorrect type. Speak to your dealer for more information.
• Use Husqvarna BLi batteries that are rechargeable as a power supply for the related Husqvarna products only. To prevent injury, do not use the battery as a power supply for other devices.
• Risk of electrical shock. Do not connect the battery terminals to keys, screws or other metal. This can cause a short circuit of the battery.
• If the battery leaks, do not let the liquid touch your body, clothes or the product. If you touch the liquid, clean the area with a large quantity of water and get medical aid.
• Use protective glasses when you are near batteries. If you get liquid in your eyes, do not rub but flush with water for a minimum of 15 minutes. Get medical aid.
• Do not use batteries that are non-rechargeable.
• Do not do modifications to the battery.
• Do not put objects into the air slots of the battery.
• Keep the battery away from sunlight, heat or open flame. The battery can cause an explosion and cause burns and/or chemical burns.
• Keep the battery away from rain and wet conditions.
• Keep the battery away from microwaves and high pressure.
• Do not try to disassemble or break the battery.
• Use the battery only when the ambient temperature is between -10^ / 14^ and 40^ / 104^ .
• Do not clean the battery or the battery charger with water. Refer to To clean the battery and the battery charger on page 27.
• Do not use batteries that are damaged or do not operate correctly.
• Keep batteries in storage away from metal objects such as nails, screws or jewelry.
• Keep the battery away from children.
• Attach the battery correctly. An incorrectly attached battery can cause a short circuit of the battery.

Battery charger safety

WARNING: Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electrical shock, fire and/or serious injury.

• Risk of electrical shock or short circuit if the safety instructions are not obeyed.
• Do not use other battery chargers than the one supplied for your product. Only use Husqvarna QC chargers to charge Husqvarna replacement batteries.
• Do not try to disassemble the battery charger.
• Do not use a battery charger that is damaged or does not operate correctly.
• Do not lift the battery charger by the power cord. To disconnect the battery charger from a mains socket, pull out the plug. Do not pull the power cord.
• Keep all cables and extension leads away from water, oil and sharp edges. Make sure that the cable is not caught between doors, fences or equivalent.
• Do not use the battery charger near flammable materials or materials that can cause corrosion. Make sure that the battery charger is not covered. Pull out the plug to the battery charger if there is smoke or fire.
• Only charge the battery indoors in a location with good airflow and away from sunlight. Do not charge the battery outdoors. Do not charge the battery in wet conditions.
• Only charge the battery when the ambient temperature is between 5^ / 41^ and 40^ / 104^ . Use the charger in an environment which has a good airflow, is dry and free from dust.
• Do not put objects into the air slots of the battery charger.
• Do not connect the battery charger terminals to metal objects as this can short circuit the battery charger.
• Do not charge non-rechargeable batteries in the battery charger or use them in the machine.
• Use approved mains sockets that are not damaged.

Safety instructions for operation

WARNING: Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electrical shock, fire and/or serious injury.

• Do not cut asbestos materials.
• When dry cutting, make sure the dust is removed safely.
• The information in this manual is not a replacement for professional knowledge and experience. If you do not feel safe in the situation that you are in, stop

the product. Do not use the product in unknown situations.

• Turn to your servicing dealer or Husqvarna if you have questions about the operation of the product. We can give you information about how to operate your product safely with best result.
• Do not use a product, battery or battery charger that is damaged or does not operate correctly.
• Do not touch a rotating cutting blade. It can cause serious injuries or death.
• Do not use the product in bad weather, for example, heavy fog or rain, strong wind and intense cold. Bad weather add risks such as ice on the ground.
• Do not start a product unless all covers and guards are assembled correctly.
• Look around you. Make sure that there is no risk that persons or animals touch or influence on your control of the product.
• Do not let children use or be near the product. The product is easy to start. This can mean a risk of serious injury.
• Remove the battery when you do not have full view of the product. Remove the battery if you will not use the product for a long time.
• You must be stable on your feet in order to have full control of the product. Do not use the product if you are on a ladder. Do not use the product if you are not on stable ground.
• Do not use the product above shoulder height.

- If you are not careful, the risk of kickback increases.

• Do not hold the product with one hand. This product is not safely controlled with one hand.
• Do not use a product in a situation where you can not get for support if an accident occurs.
  Make sure that you can move around safely.
  Examine the conditions and the terrain around you for possible obstacles.
• Overexposure to vibration can lead to circulatory damage or nerve damage in people who have impaired circulation. Contact your doctor if you experience symptoms of overexposure to vibration. Such symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin colour or condition. These symptoms normally appear in the fingers, hands or wrists. These symptoms may be increased in cold temperatures.
  It is not possible to include each possible situation you can face when you use this product. Always be careful and use your common sense.
  Note: After operating the tool, hearing protection must be lifted immediately when sawing is completed to hear sounds and warning signals can be heard.

Personal protective equipment

WARNING: Read the warning instructions that follow before you use the product.

• Always use approved personal protective equipment during operation. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your servicing dealer for help in choosing the right equipment.
• Use an approved protective helmet.

• Use approved hearing protection. Long-term exposure to noise can result in permanent hearing impairment. Be aware of warning signals or shouts when you are wearing hearing protection. Always remove your hearing protection as soon as the motor stops.

• Use approved eye protection to decrease the risk of injury from thrown objects. If you use a face shield then you must also wear approved protective goggles. Approved protective goggles must comply with standard ANSI Z87.1 in the USA or EN 166 in EU countries. Visors must comply with standard EN 1731.

• Use heavy duty gloves.
• Use approved respiratory protection. The use of products such as cutters, grinders, drills, that sand or form material can generate dust and vapours which may contain hazardous chemicals. Check the nature of the material you intend to process and use appropriate breathing mask.
• Use tight-fitting, heavy-duty and comfortable clothing that permits full freedom of movement. Cutting generates sparks that can ignite clothing. Husqvarna recommends that you wear flame-retardant cotton or heavy denim. Do not wear clothing made of material such as nylon, polyester or rayon. If ignited such material can melt and cling to the skin. Do not wear shorts.
• Use boots with steel toe-cap and non-slip sole.
  Always keep a first aid kit near.

• Sparks can come from the cutting blade. Always have a fire extinguishing available.

Safety devices on the product

WARNING: Read the warning instructions that follow before you use the product.

• Do not use a product with safety devices that are damaged or do not operate correctly.
• Do a check of the safety devices regularly. If the safety devices are damaged or do not operate correctly, speak to your Husqvarna approved service agent.
• Do not change the safety devices.
• Do not use the product if protective plates, protective covers, safety switches or other protective devices are damaged or not attached.

1. On/Off button.
2. Accessories On/Off button (not used).
3. Battery status indicator.
4. Bluetooth®. Refer to Bluetooth® wireless technology on page 21.
5. Temperature warning indicator, high or low. Refer to LED indicators on the control panel on page 30.
6. X-Halt warning. Refer to Troubleshooting on page 29
7. Error/Warning indicator. Refer to Troubleshooting on page 29.

To do a check of the control panel

1. Push and hold the On/Off button until the LED comes on. Refer to To start the product on page 24
2. Push and hold the On/Off button until the LED goes off.

Power trigger lockout

The power trigger lockout prevents accidental operation of the power trigger. If you put your hand around the handle and press the power trigger lockout (A), it releases the power trigger (B). If you release the handle,

the power trigger and the power trigger lockout move back to their initial positions.

Automatic stop function

The product has an automatic stop function that stops the product if you do not use it for 3 minutes.

Blade guard

WARNING: Make sure that the blade guard is correctly attached before you start the product. Do not use the product if the blade guard is missing, has cracks or other damage.

The blade guard is installed above the cutting blade. The blade guard prevents injury if parts of the blade or pieces from the cut material are thrown in the direction of the operator.

To examine the blade and the blade guard

WARNING: A damaged cutting blade can cause injury.

1. Make sure that the cutting blade is attached correctly and does not show signs of damage.
2. Make sure that the blade guard has no cracks or is damaged.
3. Replace the blade guard if it is damaged.

Vibration safety

WARNING: Read the warning instructions that follow before you use the product.

• During operation of the product, vibrations go from the product to the operator. Regular and frequent operation of the product can cause or increase the degree of injuries to the operator. Injuries can occur in fingers, hands, wrists, arms, shoulders, and/or nerves and blood supply or other body parts. The injuries can be debilitating and/or permanent, and can increase gradually during weeks, months or years. Possible injuries include damage to the blood circulation system, the nervous system, joints, and other body structures.
• Symptoms can occur during operation of the product or at other times. If you have symptoms and continue to operate the product, the symptoms can increase or become permanent. If these or other symptoms occur, get medical aid:
• Numbness, loss of feeling, tingling, pricking, pain, burning, throbbing, stiffness, clumsiness, loss of strength, changes in skin color or condition.
• Symptoms can increase in cold temperatures. Use warm clothing and keep your hands warm and dry when you operate the product in cold environments.
• Do maintenance on and operate the product as given in the operator's manual, to keep a correct vibration level.
• Let the product do the work. Do not push the product with force. Hold the product at the handles lightly, but make sure that you control the product and operate it safely.
• Keep your hands on the handles only. Keep all other body parts away from the product.
• Stop the product immediately if strong vibrations suddenly occurs. Do not continue the operation before the cause of the increased vibrations is removed.
• To cut granite or hard concrete causes more vibration in the product than if you cut soft concrete. Cutting equipment that is blunt, damaged, of incorrect type or incorrectly sharpened, increases the vibration level

Safety instructions for maintenance

WARNING: Read the warning instructions that follow before you do maintenance on the product.

• Remove the battery before you do maintenance, other checks or assemble the product.
• The operator must only do the maintenance and servicing shown in this operator's manual. Turn to your servicing dealer for maintenance and servicing of a larger extension.

• Do not clean the battery or the battery charger with water. Strong detergent can cause damage to the plastic.

• If you do not do maintenance, it decreases the life cycle of the product and increases the risk of accidents.

• Special training is necessary for all servicing and repair work, especially for the safety devices on the product. If not all checks in this operator's manual

are approved after you have done maintenance, turn to your servicing dealer. We guarantee that there are professional repairs and servicing available for your product.

• Only use original spare parts.

Assembly

Cutting blades

WARNING: Always use protective gloves when you assemble the product.

WARNING: A cutting blade can break and cause injury to the operator.

WARNING: Examine the cutting blade for cracks, lost segments distortion or unbalance prior to use and immediately after striking an unintended object. Do not use a damaged cutting blade. After inspecting and installing the cutting blade, position yourself and bystanders away from the plane of the rotating cutting blade and run the power tool at maximum no load speed for one minute.

WARNING: The cutting blade manufacturer gives warnings and recommendations for the operation and correct maintenance of the cutting blade. Those warnings are supplied with the cutting blade. Read and obey the instructions that are supplied with the cutting blade.

Cutting blade vibration

CAUTION: If you use the product with too much force, the cutting blade can become too hot, bend and cause vibrations. Use the product with less force. If the vibrations continue, replace the cutting blade.

Applicable cutting blades

CAUTION: Use Husqvarna recommended cutting blades for K 540i and the material to be cut. The recommended cutting blades decrease the risk of serious injury and increase the cutting and X-halt performance. If general high speed cutting blades are used, the performance and cutting quality will decrease.

WARNING: Only use diamond blades and abrasive blades for concrete and metal. Do not use blades with serrations such as circular wood cutting blades or blades with carbide tips. The risk of kickback is increased and carbide tips can come off and be thrown at high speed. This can result in injury or death.

WARNING: Never use a cutting blade for any other materials than what it was intended to cut.

WARNING: Use only cutting blades that comply with applicable national or regional standards, for example EN12413, ANSI B7.1, or EN13236.

WARNING: Do not use a cutting blade with a rated speed value lower than that of the product. The rated speed value of the cutting blade is marked on the cutting blade and that of the product is marked on the type plate.

Note: Many cutting blades that can be attached to this product are made for stationary saws. The rated speed value of those cutting blades is too low for this product.

WARNING: Do not use cutting blades with thickness exceeding maximum

recommended thickness. Refer to Technical data on page 32.

Cutting blades applicable to this product are available in two basic models; bonded abrasive blades and diamond blades.

• Make sure that the cutting blade has the correct center hole dimension for the installed arbor bushing.

Abrasive blades

WARNING: Do not use abrasive blades with water. Water or moisture decreases the strength of the abrasive blade and increases the risk that the blade breaks.

CAUTION: Cutting with abrasive blade is not permitted with the Vac attachment. Use of abrasive blade causes too much wear on the Vac attachment.

WARNING: Use correct abrasive blade on correct material.

• Do not use wheels from larger power tools. Wheels of a larger power tool are not correct for the higher speed of a smaller tool and may break.
• The cutting material on abrasive blades is bonded with natural material that have a gravel bonded agent. Blades that are made up of a fabric or fibre are stronger. This type of blade does not break if the blade gets cracks or becomes damaged during operation.
  The performance of a cutting blade is given by the dimension of abrasive grain, and the type and hardness of the bonding agent.

To examine a bonded abrasive cutting blade

• Make sure that there are no cracks or damages on the cutting blade.

• Hang the cutting blade on your finger and hit the cutting blade lightly with a screwdriver. If you do not hear a clear sound, the cutting blade is damaged.

Diamond blades

WARNING: Diamond blades become very hot when used. A diamond blade that is too hot gives bad performance, blade damage and is a safety risk.

WARNING: Do not use diamond blades to cut plastic material. The hot diamond blade can melt the plastic, which can cause a kickback.

• Diamond blades have a steel core with segments that are made of industrial diamonds.

• Diamond blades are used for masonry, reinforced concrete and stone.

• Make sure that the diamond blade rotates in the direction of the arrows shown on the diamond blade.

Always use a sharp diamond blade.
- Diamond blades can become blunt if you use an incorrect feeding pressure or when you cut materials such as hard reinforced concrete. If you use a blunt diamond blade it becomes too hot, which can cause the diamond segments to come loose.

To sharpen the cutting blade

Note: For the best cutting results, use a sharp cutting blade.
- To sharpen the cutting blade, cut into soft material, such as sandstone or brick.

Diamond blade - requirements

WARNING: Make sure the diamond segment (T1) is wider than the blade (T2). This is to prevent pinching in the cutting slot and a kickback.

WARNING: Do not use diamond blades with positive rake angles.

WARNING: Do not use diamond blades with greater gap between segments than max 10 mm (A).

WARNING: Do not use diamond blades with greater blade thickness than recommended maximum, refer to Technical data on page 32.

WARNING: Some cutting situations and worn blades may cause increased wear on the side of the segments. Replace the blade before it is worn out.

Diamond blades for wet cutting

WARNING: Always use a blade flange dimension that is specified for the current blade dimension. Do not use blade flanges that are damaged.

During the operation, the friction causes the diamond blade to become very hot. If the diamond blade becomes too hot, it will decrease the blade tension or make the core crack.

Let the diamond blade become cool before you touch it.

• Diamond blades for wet cutting must be used with water to keep the diamond blade core and segments cool during cutting. Diamond blades for wet cutting can not be used dry.
  If you use diamond blades for wet cutting without water, the diamond blade can become too hot. This

gives bad performance, blade damage and is a safety risk.

Diamond blades for dry cutting

• For diamond blades for dry cutting it is necessary to have a sufficient airflow around the cutting blade to decrease the temperature. Because of this, diamond blades for dry cutting are recommended only for intermittent operation. After some seconds of operation, it is necessary to let the diamond blade rotate freely, away from the cut. This lets the airflow around the blade decrease the temperature of the diamond blade.

Toothed blades

WARNING: Never use toothed blades such as wood cutting blades, circular toothed blades, carbide tipped blades, etc. The risk of kickback is significantly increased and tips can be torn off and thrown at high speed. Carelessness can result in serious personal injury or even death.

WARNING: Government regulation requires a different type of guarding for carbide tipped blades not available on power cutters - a 360 degree guard. Power Cutters (this saw) use diamond blades and have a different guarding system which does not provide protection against the dangers presented by wood cutting blades.

Use of this power cutter with a carbide tipped blade is a violation of work safety regulations.

Due to the hazardous nature and exigent circumstances involved with fire fighting and rescue operations conducted by the various highly trained public safety forces, safety professionals (fire departments), Husqvarna is aware that they may use this power cutter with carbide tipped blades in certain emergency situations due to the ability of carbide tipped blades to cut many different types of obstructions and materials in combination without having to take time to switch blades or machines. When using this power cutter be aware at all times that carbide tipped blades are more kickback prone than diamond blades if not used properly. Carbide tipped blades can also throw pieces of material away from the blade.

For these reasons, a power cutter equipped with a carbide tipped blade should never be used except by highly trained public safety professionals who are aware of the risks associated with its use and then only in those exigent circumstances when other tools are deemed inefficient and ineffective for fire or rescue operations. A power cutter equipped with a carbide tipped blade should never be used to cut wood in non-rescue operations.

To examine the spindle shaft and the flange washers

WARNING: Use only Husqvarna flange washers with a minimum diameter of 67 mm/2.6 in.

WARNING: Do not use damaged, worn or dirty flange washers. Use only flange washers of the same dimension. Incorrect flange washers can cause the cutting blade to become damaged or come loose.

Examine the spindle shaft and the flange washers when you replace the cutting blade.

1. Make sure that the threads on the spindle shaft are not damaged. Replace damaged parts.

1. Make sure that the areas of contact on the cutting blade and the flange washers are not damaged. Replace damaged parts.
2. Make sure that the flange washers are clean and of the correct dimension.
3. Make sure that the flange washers move freely on the spindle shaft.

To install the cutting blade

WARNING: Make sure that the motor is off and that the battery is disconnected.

WARNING: Always use protective gloves when you assemble the product.

1. Examine the flange washers and the spindle shaft. Refer to To examine the spindle shaft and the flange washers on page 16.
2. Put the cutting blade on the arbor bushing (A) between the inner flange washer (B) and the flange washer (C). Turn the flange washer until it holds on to the shaft.

1. Put a tool into the hole in the belt guard and turn the cutting blade until the shaft is locked.

1. Tighten the cutting blade bolt to 30 Nm/18.5 ft-lb.

Operation

Introduction

WARNING: Read and understand the safety chapter before you use the product.

Kickback

WARNING: Kickbacks are sudden and can be very violent. The power cutter can be thrown up and back towards the user in a rotating motion causing serious or even fatal injury. It is vital to understand what causes kickback and how to avoid it before using the product.

Kickback is the sudden upward motion that can occur if the blade is pinched or stalled in the kickback zone. Most kickbacks are small and pose little danger. However a kickback can also be very violent and throw the power cutter up and back towards the user in a rotating motion causing serious or even fatal injury.

Reactive force

A reactive force is always present when cutting. The force pulls the product in the opposite direction to the blade rotation. Most of the time this force is insignificant. If the blade is pinched or stalled, the reactive force will be strong and you might not be able to control the power cutter.

Never move the product when the cutting equipment is rotating. Gyroscopic forces can obstruct the intended movement

Kickback zone

Never use the kickback zone of the blade for cutting. If the blade is pinched or stalled in the kickback zone, the reactive force will push the power cutter up and back

towards the user in a rotating motion causing serious or even fatal injury.

Rotational kickback

A rotational kickback occurs when the cutting blade does not move freely in the kickback zone.

Climbing kickback

If the kickback zone is used for cutting, the reactive force drives the blade to climb up in the cut. Do not use the kickback zone. Use the lower quadrant of the blade to avoid climbing kickback.

Pinching kickback

Pinching is when the cut closes and pinches the blade. If the blade is pinched or stalled the reactive force will be strong and you might not be able to control the power cutter.

If the blade is pinched or stalled in the kickback zone, the reactive force will push the power cutter up and back towards the user in a rotating motion causing serious or even fatal injury. Be alert for potential movement of the work piece. If the work piece is not properly supported and shifts as you cut, it might pinch the blade and cause a kick back.

Pipe cutting

Special care should be taken when cutting in pipes. If the pipe is not properly supported and the cut kept open throughout the cutting, the blade might be pinched. Be especially alert when cutting a pipe with a belled end or a pipe in a trench that, if not properly supported, may sag and pinch the blade.

If the pipe is allowed to sag and close the cut, the blade will be pinched in the kick back zone and a severe kick back might develop. If the pipe is properly supported, the end of the pipe will move downward, the cut will open and no pinching will occur.

Secure the pipe so it does not move or roll during cutting. Make sure that the cut opens to avoid pinching the blade.

To cut in smaller pipes

WARNING: If the blade is pinched in the kickback zone, it will cause a severe kickback.

If the pipe is smaller than the maximum cutting depth of the product, the cutting operation can be done in 1 step from top to bottom.

• Cut the pipe from top to bottom.

To cut in larger pipes

WARNING: If the blade is pinched in the kickback zone, it will cause a severe kickback.

If the pipe is larger than the maximum cutting depth of the product, and can not be rolled, the cutting operation needs to be divided in 5 steps.

• Set the blade guard to pipe cutting mode. Refer to To set the pipe cutting mode on page 23.
• Divide the pipe into 5 sections. Do a mark of those sections and of a cutting line. Cut a shallow guide groove around the pipe.

• Cut those sections in 5 steps with the cutting directions shown by the arrows in each step.

• Make the final separating cut from the top of the pipe pulling backwards, without involving the upper quadrant of the blade. Adjust the blade guard to full forward position for maximum protection.

WARNING: If the pipe is properly supported, it should not pinch the blade when separated in section 5. However be alert if the blade is pinched during the final separation. If the blade is pinched in the lower section, the product may pull forward away from the operator, rather then resulting in a rotating kickback.

To prevent a kickback

WARNING: Avoid situations where there is a risk of kickback. Take care when using your power cutter and make sure that the blade is never pinched in the kickback zone.

WARNING: Be careful when you put the blade in an existing cut.

WARNING: Make sure that the work piece cannot move during a cutting operation.

WARNING: Only you and proper working technique can eliminate kickback and its dangers.

Always support the work of piece so that the cut can keep open when cutting through. When the cut is open there is no kickback. If the cut is closed and pinches the blade, there is a risk of kickback.

X-Halt

The X-Halt function is an electronic brake system that is engaged if a kickback occurs. The function can not fully prevent personal injury from a kickback, but it decreases the risk. A safe working technique is necessary to prevent kickbacks and to decrease the risk of injuries.

The X-Halt function is always on when the product is on. If the function is engaged, the control panel shows the X-Halt waning symbol until the product becomes cool. Refer to Troubleshooting on page 29. For more information, refer to Troubleshooting on page 29.

To do before you use the product

1. Read the operator's manual carefully and make sure that you understand the instructions.
2. Do the daily maintenance. Refer to Maintenance schedule on page 26.
3. Make sure that only approved persons are in the work area.

4. Make sure that you are in a safe and stable position during operation.

5. Make sure that the water connector is connected to a water supply. Refer to To connect the coolant water on page 24.

6. Do a check of the rear handle (A) to make sure that it is not damaged.

1. Do a check of the power trigger lockout (B) to make sure that it operates correctly and that it is not damaged.
2. Do a check of the control panel (C) to make sure that it operates correctly.
3. Make sure that all parts and guards are correctly attached and not damaged or missing.
4. Charge the battery and make sure that it is correctly attached to the product. Only use Husqvarna BLi approved batteries for the product.
5. Make sure that the power cutter stops when you release the power trigger.

To examine the direction of rotation of the cutting blade

1. Find the arrow on the blade guard that shows the direction of rotation of the spindle shaft.

1. Find the arrow on the cutting blade that shows the direction of rotation of the cutting blade.
2. Make sure that the direction arrow of the cutting blade and the spindle shaft have the same direction.

To do a check of the arbor bushing

The arbor bushings are used to attach the product to the center hole of the cutting blade. The product is supplied with arbor bushings that are applicable for 25.4mm /1 in. center holes.

• Make sure that the dimension of the center hole of the cutting blade agrees with the installed arbor bushing. The diameter of the center hole is printed on the cutting blade.

• Use only Husqvarna arbor bushings.

Bluetooth® wireless technology

Products with built-in Bluetooth® wireless technology can connect to mobile devices. The symbol for Bluetooth® wireless technology comes on when your mobile device is connected to the product.

To use embedded connectivity with Husqvarna Fleet Services™

Note: This part is applicable only for products supplied with embedded connectivity.

Note: Radio transmission by the Bluetooth® function will be enabled on the first time of connection to a battery, and stay on after that.

1. Download the Husqvarna Fleet Services ^TM iOS or Android app Husqvarna Fleet Services.
2. Go to Husqvarna Fleet Services ^TM website https://fleetservices.husqvarna.com for more information.

To connect the battery charger

1. Connect the battery charger to the voltage and frequency that is specified on the rating plate.
2. Put the plug in a grounded socket outlet. The LED on the battery charger flashes green one time.

Note: The battery does not charge if the battery temperature is more than 50^ / 122^ . If the temperature is more than 50^ / 122^ , the battery charger makes the battery become cool before the battery charges.

To connect the battery to the battery charger

Note: Charge the battery if it is the first time that you use it. A new battery is only 30% charged.

1. Make sure that the battery is dry.

2. Put the battery in the battery charger.

1. Make sure that the green charging light on the battery charger comes on. That means that the battery is connected correctly to the battery charger.

1. When all LEDs on the battery come on, the battery is fully charged.

1. To disconnect the battery charger from the mains socket, pull the plug. Do not pull the cable.
2. Remove the battery from the battery charger.

Note: Refer to the battery and battery charger manuals for more information.

Basic working techniques

WARNING: Do not move the power cutter to the side. This can prevent the free movement of the blade and cause the blade to break, which can cause an injury.

WARNING: Do not use the side of the blade. The blade can become damaged and

broken, which can cause an injury. Use only the cutting edge.

WARNING: Do not use a diamond blade to cut plastic material. The heat that occurs can melt the plastic. Melted plastic can attach to the cutting blade and cause a kickback.

• The product is made for high speed diamond blades, abrasive blades and recommended blades for the product. Use Husqvarna recommended cutting blades for the product.
  The product is made to cut into tiles, light concrete and stone. Use only for this type of operation.
• Make sure that the cutting blade does not show signs of damage and that it is attached correctly, refer to Abrasive blades on page 14 and To install the cutting blade on page 16.
  Always use the correct cutting blade for the type of operation, refer to Cutting blades on page 13.
• Do not cut asbestos material.
• Always hold the power cutter with 2 hands. Always hold the product tightly with thumbs and fingers around the handles. Always hold the rear handle with the right hand and the front handle with the left hand.

• Always be parallel to the cutting blade. Do not be linearly behind the cutting blade. If there is a kickback, the power cutter moves in the plane of the cutting blade.

• Keep a safe distance to the cutting blade when the engine operates.
  Make sure that you are in a stable position during operation.

• Keep applicable distance from the object you are cutting.

• Do not operate above shoulder height. Use a platform or scaffold if the cutting operation is above shoulder height. Do not overreach.

• Do not operate from a ladder.

• Make sure that the cutting blade is free when the engine is started.
• Always monitor the product when the engine operates.
• Do not move the product when the cutting blade rotates. The product has a electrical retarder to decrease the blade stop time.
• Make sure that the front ground support is flush with the work piece at the rear. The blade guard collects spray and dust and keeps them away from the operator.

• Cut with full throttle. Keep full rotating speed until the cutting operation is completed.

• Push the cutting blade lightly against the object you are cutting. Do not use force.

• Align the cutting blade with the cut.

• Move the cutting blade slowly forward and rearward to decrease the area between the cutting blade and the material. This decreases the temperature of the cutting blade.

• Do not cut with the kickback zone of the blade, see Kickback zone on page 17.

To set the pipe cutting mode

WARNING: The adjustment handle for blade guard can be very hot, use gloves when you adjust the blade guard.

WARNING: Only use pipe cutting mode during pipe cutting operation. In all other operations you must use standard cutting mode

The pipe cutting mode enables pipe cutting in the kickback zone.

1. Move the stop bolt of the blade guard from the standard cutting mode (A) to the pipe cutting mode (B).

1. Pull the adjustment handle to enable the pipe cutting mode.

1. Put back the stop bolt to the standard cutting mode after the pipe cutting operation. The arrow (A) shows the standard cutting mode.

Wet cutting

CAUTION: Do not use Vac equipment together with the wet system.

• Diamond blades for wet cutting must be used with the wet system.
  Water cool the blade and increases its service life while also decrease the dust.
• When wet cutting, make sure to collect the waste water safely.

To decrease dust during operation

The product has a wet cutting kit to decrease harmful dust in the air during operation. The wet cutting kit has low water consumption.

• When possible, use wet cutting blades with water cooling. Refer to Diamond blades for wet cutting on page 15.
• Adjust the water flow with the valve. The correct flow is different for different types of tasks.
• Make sure that the water pressure is correct. Refer to Technical data on page 32. If the water hose comes off at the supply source, the supplied water pressure can be too high.

To connect the coolant water

1. Connect the water hose to the water supply (A).

1. Turn the water valve (B) to start or stop the water flow.
2. Examine the water connection and the hose for leakage.
3. Make sure that the water pressure is not higher than the maximum permitted water pressure, refer to Technical data on page 32.

Dry cutting

• When dry cutting, lift the blade out from the cut each 30-60 seconds and let it rotate in the air for 10 seconds to let it cool.
• Use Vac equipment if possible.

To start the product

1. Do a check of the power trigger and power trigger lockout. Refer to To do a check of the power trigger lockout on page 27.

2. Put the battery in the battery holder.

1. Push on the lower part of the battery until you hear a click sound. If the battery does not move into the battery holder easily, it is not attached correctly into the battery holder.

1. Push and hold the On/Off button until the green LED light comes on.

1. Push the power trigger to start the motor.

To stop the product

1. Release the power trigger.
2. Push and hold the On/Off button on the control panel until the green LED light goes off.

1. Push the battery release button and remove the battery from the battery holder.

WARNING: Remove the battery when you do not use or when you do not have full vision of the product. This is to prevent accidental start.

Maintenance

Introduction

WARNING: Read and understand the safety chapter before you do maintenance work on the product.

cycle and increase the risk of accidents. All servicing and/or repair work must also be done by a professional. Turn to your servicing dealer for more information.

WARNING: Remove the battery before you do maintenance on the product.

Maintenance schedule

The following is a list of the maintenance steps that you must do on the product.

WARNING: Failure to do maintenance correctly can decrease the product life

Maintenance Before	use	After use	Monthly
Clean the external parts of the product. X
Make sure that the power trigger and the power trigger lockout function correctly from a safety point of view.	X
Do a check of the cutting blade. Look for cracks and make sure that the cutting blade is not unusually worn. Replace if necessary.	X
Do a check of the blade guard. X
Do a check of the belt guard. X
Do a check of the vibration damping system. X
Clean the fan housing on the product. X
Make sure that the screws and nuts are tight. X
Make sure that the control panel works correctly and that it is not damaged. X
Do a check of the connections between the battery and the product. Do a check of the connection between the battery and the battery charger.			X
Blow through the product and battery soft with compressed air. X
Clean the product. X
Replace damaged parts. X

To clean externally

WARNING: Do not use a high-pressure washer to clean the product.

• Flush the product externally with clean water after each day of operation. If it is necessary, use a brush.

To do a check of the power trigger lockout

1. Make sure that the power trigger and power trigger lockout move freely and that the return spring operates correctly.

1. Push down the power trigger lockout and make sure that it goes back to its initial position when you release it.

1. Make sure that the power trigger is locked at the idle position when the power trigger lockout is released.

1. Push and hold the On/Off button to start the product and apply full power. Refer to To start the product on page 24.

1. Release the power trigger and make sure that the cutting blade stops. If the cutting blade rotates when the power trigger is in the idle position, speak to your servicing dealer.

To clean the battery and the battery charger

WARNING: Do not clean the battery or the battery charger with water.

WARNING: Do not use any chemical substances to clean the battery.

• Make sure that the battery and the battery charger are clean and dry before you put the battery into the battery charger.
• Clean the battery terminals with compressed air or use a soft and dry cloth.
• Clean the surfaces of the battery and the battery charger with a soft and dry cloth.

To do a check of the battery charger

1. Make sure that the battery charger and the power supply cord is not damaged. Look for cracks and other damage.

To clean the cooling system

The product has a cooling system that keeps the temperature of the product as low as possible.

The cooling system includes an air intake on the left side of the product and a fan on the motor.

1. Clean the cooling system with a brush weekly or more frequently if necessary.
2. Make sure that the cooling system is not dirty or blocked.

CAUTION: A dirty or blocked cooling system can cause the product to become too hot.

To remove the drive belt

1. Remove the belt guard. Refer to Product overview K 540i on page 3.
2. Put the belt tool on top of the front pulley. Use a combination wrench to turn the pulley clockwise while you pull the drive belt off the pulley.

To install the drive belt

1. Put the drive belt around the rear pulley.

2. Put the belt assembly tool (A) on top of the front pulley.

1. Turn the front pulley clockwise with the combination wrench (B). At the same time, push the drive belt onto the pulley.
2. Attach the belt guard. Refer to Product overview K 540i on page 3.

To do a check of the water supply system

1. Examine the nozzles on the blade guard and make sure that they are not clogged.
2. Clean as necessary.
3. Examine the filter on the water connector. Make sure that it is not clogged.
4. Clean as necessary.

1. Examine the hoses and make sure that they are not damaged.

Service

Approved service center

To find your nearest Husqvarna approved service center, go to the web site www.husqvarnaconstruction.com.

Troubleshooting

Troubleshooting of the product

Problem Cause Solution
The product does not start. No LEDs come on when you push the On/Off button on the product.	The battery is damaged. Do a test with a different battery.
	The plug between the battery and the product is damaged.	Make sure that the power connectors between the battery and the product are not dirty or damaged.
	The battery is not correctly installed in the product.	Remove the battery and install it correctly.
	Servicing is necessary.	Speak to an approved Husqvarna service center.
The product is on, but a warning indicator or a indicator is on or flashes.	There is an error in the product.	Speak to an approved Husqvarna service center.
The product is on but the motor does not start when you push the power trigger.	Servicing necessary.	Speak to an approved Husqvarna service center.
The motor is on but the blade shaft does not rotate.	The drive belt is damaged or worn.	Replace the drive belt, refer to To remove the drive belt on page 28.
An unusual noise comes from the front bearings.	The bearings are damaged or worn.	Speak to an approved Husqvarna service center.
There are unusual vibrations when the product is on.
The product makes a sudden movement when you push the power trigger, then immediately stops.	There is a short circuit in the control unit.	Speak to an approved Husqvarna service center.
The product stops during a kickback.	The X-Halt function is engaged. Speak to an approved Husqvarna service center.
The motor makes sudden movement when you push the power trigger, then stops.	Servicing is necessary. Wait for the X-Halt to disengage.
The product stops when you apply work load.	There is too much work load on the product.	Start the product again and apply less work load.

LED indicators on the control panel

The LED indicators on the control panel show the state of charge of the battery and if there are problems with the product.

LED indicator	Indication Cause	Solution
1	The indicator flashes.	The X-Halt function is engaged.	Wait for the product to cool down and the X-Halt function to disengage.
	The indicator is on.	Servicing is necessary. Speak to an approved Husqvarna service center.
2	The indicator flashes.	There is a battery error.	Pull the power trigger 1 time to reset the error warning. If the error warning comes back, do a test with a different battery.
		Temporary error	Pull the power trigger 1 time to reset the error warning. If the problem does not disappear, speak to an approved Husqvarna service center.
		The power trigger and the On/Off button are pushed at the same time.	Release the power trigger and start the product.
	The indicator is on.	Servicing is necessary. Speak to an approved Husqvarna service center.
3	All 4 indicators flash.	The product does a Firmware Over-the-Air (FOTA) update.	Let the FOTA update finish.
		Servicing necessary. Speak to an approved Husqvarna service center.
2 and 3	Indicator no. 2 and the first LED on indicator no. 3 flash.	The battery level is low. Charge the battery.
2 and 4	Indicator no. 2 flashes and indicator no. 4 is on.	Temperature deviation. The product is too hot or too cold.

Transportation, storage and disposal

Transportation and storage

• Secure the product during transportation to prevent damage and accidents.
• Remove the cutting blade before transportation or storage of the product.
• Keep the product in a locked area to prevent access for children or persons that are not approved.
• Keep the cutting blades in dry, frost free conditions.
• Disconnect the battery from the product.
• Examine all new and used blades for transport and storage damage before assembly.

Disposal of the battery, battery charger and product

The symbol below means that the product is not domestic waste. Recycle it at a recycling station for electrical and electronic equipment. This helps to prevent damage to the environment and to persons.

Speak to local authorities, domestic waste service or your dealer for more information.

Note: The symbol shows on the product or package of the product.

Technical data

Technical data

Husqvarna K 540i
Voltage d.c. maximum/nominal, V 40/36
Weight, kg/lbs 4.2/9.3
Maximum cutting depth, mm/in. 100/3.9
Maximum blade diameter, mm/in. 267/10.5
Maximum blade thickness, mm/in. Abrasive blades 3.0/0.12
Diamond blades 1.6/0.06
Blade shaft, rpm no load 5500
Water cooling of blade Yes
Connecting nipple Type "Gardena"
Recommended water pressure, bar/psi 0.5-6/72.5-87.0
Maximum water pressure, bar/psi 6/87
Vibration levels, \(a_{hveq}^{1}\)
\(10"\text{ Front, m/s}^2\)		2.2
\(10"\text{ Rear, m/s}^2\)		1.9
Noise emissions2
LpA, dB(A) 101.5
LwA, dB(A) 112.7

Noise and vibration declaration statement

These declared values were obtained by laboratory type testing in accordance with the stated directive or standards and are suitable for comparison with the declared values of other products tested in accordance with the same directive or standards. These declared

Embedded connectivity

Note: This part is applicable only for products supplied with embedded connectivity.

BLE technology radio spectrum

Frequency bands for the tool, GHz 2.402-2.480

values are not suitable for use in risk assessments and values measured in individual work places may be higher. The actual exposure values and risk of harm experienced by an individual user are unique and depend upon the way the user works, in what material the product is used, as well as upon the exposure time and the physical condition of the user, and the condition of the product.

BLE technology radio spectrum

Maximum radio-frequency power transmitted, dBm/mW 4/2.5

Accessories

Approved batteries for the product

Battery BLi200 BLi300
Type Lithium-ion Lithium-ion
Battery capacity, Ah 5.2 9.4
Nominal voltage, V 36 36
Weight, kg / lb 1.3 / 2.9 1.9 / 4.2

Approved battery chargers for the product

Battery charger	QC330 QC500
Mains voltage, V 100-240 100-240
Frequency, Hz 50-60 50-60
Power, W 330	500

Vacuum attachment (Accessory)

Use the VAC attachment to connect a dust extractor to the product.

Declaration of Conformity

EU Declaration of Conformity

We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: [phone], declare on our sole responsibility that the product:

Description Portable cut-off machine
Brand Husqvarna
Type/Model K 540i
Identification Serial numbers dating from 2023 and onwards

complies fully with the following EU directives and regulations:

Directive/Regulation Description
2006/42/EC "relating to machinery"
2014/53/EU "relating to radio equipment"
2011/65/EU "relating to restriction of hazardous substances"

and that the following standards and/or technical specifications are applied;

EN ISO 12100:2010

EN 60745-2-22:2011/A11:2013

EN 55014-1:2017

EN 55014-2:2015

ETSI EN 301 489-1 V2.2.3

ETSI EN 301 489-17 V3.2.4

ETSI EN 300 328 V2.2.2

EN IEC 63000:2018

Partille, 2023-04-12

Fnuclu 82

Fredrik Sandinge

R&D Director, Concrete Sawing & Drilling Equipment

Husqvarna AB, Construction Division

Responsible for technical documentation

UK Declaration of Conformity

We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel:

[phone], declare on our sole responsibility that

the product:

Description Portable cut-off machine
Brand Husqvarna
Type/Model K 540i
Identification Serial numbers dating from 2023 and onwards

Description

The Supply of Machinery (Safety) Regulations 2008

The Radio Equipment Regulations 2017

The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012

and that the following standards and/or technical specifications are applied;

EN ISO 12100:2010

EN 60745-2-22:2011/A11:2013

EN 55014-1:2017

EN 55014-2:2015

ETSI EN 301 489-1 V2.2.3

ETSI EN 301 489-17 V3.2.4

ETSI EN 300 328 V2.2.2

EN IEC 63000:2018

Partlle, 2023-04-12

UK Importer:

Husqvarna UK Ltd

Preston Road, Co. Durham

DL56UP

Fredrik Sandinge

R&D Director, Concrete Sawing & Drilling Equipment

Husqvarna AB, Construction Division

Responsible for technical documentation

Registered trademarks

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, inc. and any use of such marks by Husqvarna is under license.

Inhalt

Einleitung. 37

Sicherheit. 40

Montage. 50

Betrieb. 54

Wartung 63

Service. 66

Fehlerbehebung. 66

Husqvarna AB, Construction Division

Rangee 1: marque, modele

Précautions relatives aux vibrations

Husqvarna AB, division Construction

Responsible de la documentation technique

Marques déposées

WAARSCHUWING: Bepaalde

Original instructions

Originalanweisungen