K 770 SmartGuard - Motorcycle HUSQVARNA - Free user manual and instructions

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USER MANUAL K 770 SmartGuard HUSQVARNA

6. Start instruction decal

15. Cutting equipment decal

16. Flange, spindle, arbor bushing

17. Adjustment handle for blade guard

21. T screw, idle speed adjustment

23. Water connection with filter

27. Front belt guard

5. Start instruction decal

13. Cutting equipment decal

16. Adjustment handle for blade guard

19. T screw, idle speed adjustment

25. Front belt guard

5. Combination wrench

13. T screw, idle speed adjustment

15. Water connection with filter

20. Cutting equipment decal

25. Adjustment handle for blade guard

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 8

Dust forms when cutting. The dust can cause injuries if inhaled. Use an approved respiratory protection. Avoid inhaling exhaust fumes. Always provide for good ventilation. 4 1447 - 004 - 04.05.2021WARNING! Kickbacks can be sudden,rapid and violent and can cause lifethreatening injuries. Read and understandthe instructions in the manual before usingthe product. Refer to Kickback on page

Sparks from the cutting blade can causefire in fuel, wood, clothes, dry grass orother flammable materials.Make sure that the cutting blade does nothave cracks or other damages.Do not use circular saw blades.ChokeAir purge bulbDecompression valveStarter rope handleUse a fuel mixture of gasoline and oil.This product complies with applicable EUDirectives.Noise emission to the environmentcomplies with applicable EC Directives.The noise emission of the product isspecified in Technical data on page 34 and on the label. Note: Other symbols/decals on the product refer to special certification requirements for some markets. Start instructions decal Refer to To start the product with a cold engine on page

and To start the product with a warm engine on page 24 for instructions. Cutting equipment decal

Husqvarna AB Huskvarna, SWEDEN XXXXXXXXXXX XXXXXXXXXXXX Row 1: Brand, Model (X, Y)Row 2: Serial No. with manufacturing date (Y, W, X):Year, Week, Sequence No.1447 - 004 - 04.05.2021 5Row 3: Product No. (X) Row 4: Manufacturer Row 5: Manufacturer address Rows 6–7: EU type approval or Chinese MEIN number Euro V Emissions

WARNING: Tampering with the engine

voids the EU type-approval of this product. Product liability As referred to in the product liability laws, we are not liable for damages that our product causes 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 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.

• 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. Safety instructions for operation

WARNING: Read the warning

instructions that follow before you use the product.

• Before you use a power cutter, you must understand the effects of kickback and how to prevent them. Refer to Kickback on page 17

• Do the safety checks, maintenance and servicing as given in this operator's manual. Some maintenance and servicing must be done by an approved service center. Refer to Introduction on page 25

• Do not use the product if it is defective.

• Do not use the product if you are tired, ill, or under the influence of alcohol, drugs or medicine. These

1447 - 004 - 04.05.2021conditions can have an unwanted effect on your vision, alertness, coordination or judgment.

• Do not start the product without the belt and the belt guard installed. The clutch can become loose and cause injury.

• Sparks from the cutting blade can cause fire in flammable materials such as gasoline, gas, wood, clothes and dry grass.

• Do not cut asbestos material. Work area safety

WARNING: Read the warning

instructions that follow before you use the product.

• The safety distance for the power cutter is 15 m/50 ft. Make sure that animals and bystanders are not in the work area.

• Do not operate the product until the work area is clear and your feet and body are in a stable position.

• Look out for persons, objects and situations that can prevent safe operation of the product.

• Make sure that no persons or objects can come into contact with the cutting equipment or be hit by parts thrown by the blade.

• Do not use the product in fog, rain, strong winds, cold weather, risk of lightning or other bad weather conditions. To use the product in bad weather can have a negative effect on your alertness. Bad weather can cause dangerous work conditions, such as slippery surfaces.

• During operation of the product, make sure that no material can become loose and fall and cause injury to the operator.

• Be very careful when you operate the product on a slope.

• Keep the work area clean and bright.

• Before you operate the product, find out if there are hidden hazards such as electrical cables, water, and gas pipes and flammable substances in the work area. If the product hits a hidden object, stop the engine immediately and examine the product and the object. Do not start to operate the product again until you know that it is safe to continue.

• Before you cut into a drum, a pipe, or other container, make sure that it does not contain flammable or other material that can cause fire or explosion. Vibration safety

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.

• The product has a vibration damping system that decreases the vibrations from the handles to the operator. 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. Do not push the handles into the end stops more than necessary.

• Keep your hands on the handle or 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, defective, of incorrect type or incorrectly sharpened, increases the vibration level Exhaust fumes safety

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

• The exhaust fumes from the engine contain carbon monoxide which is an odourless, poisonous and very dangerous gas. To breathe carbon monoxide can cause death. Because carbon monoxide is odourless and cannot be seen, it is not possible to sense it. A symptom of carbon monoxide poisoning is dizziness, but it is possible that a person becomes unconscious without warning if the quantity or concentration of carbon monoxide is sufficient.

• Exhaust fumes also contain unburned hydrocarbons including benzene. Long-term inhalation can cause health problems. 1447 - 004 - 04.05.2021 7• Exhaust fumes that you can see or smell also contain carbon monoxide.

• Do not use a combustion engine product indoors or in areas that do not have sufficient airflow.

• Do not breathe the exhaust fumes.

• Make sure that the airflow in the work area is sufficient. This is very important when you operate the product in trenches or other small work areas where exhaust fumes can easily collect. Dust safety

WARNING: Read the warning

instructions that follow before you use the product.

• Operation of the product can cause dust in the air. Dust can cause serious injury and permanent health problems. Silica dust is regulated as harmful by several authorities. These are examples of such health problems:

• The fatal lung diseases chronic bronchitis, silicosis and pulmonary fibrosis

• Use correct equipment to decrease the quantity of dust and fumes in the air and to decrease dust on work equipment, surfaces, clothing and body parts. Examples of controls are dust collection systems and water sprays to bind dust. Decrease dust at the source where possible. Make sure that the equipment is correctly installed and used and that regular maintenance is done.

• Use approved respiratory protection. Make sure that the respiratory protection is applicable for the dangerous materials in the work area.

• Make sure that the airflow is sufficient in the work area.

• If it is possible, point the exhaust of the product where it cannot cause dust to go into the air. Personal protective equipment

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 engine 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

• 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 muffler or the cutting blade. Always have a fire extinguishing available. Safety devices on the product

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

• Do not use a product with defective safety devices.

• Do a check of the safety devices regularly. If the safety devices are defective, 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 defective or not attached. Throttle trigger lockout The throttle trigger lockout prevents accidental operation of the throttle trigger. If you put your hand around the

1447 - 004 - 04.05.2021handle and push the throttle trigger lockout (A), it releases the throttle trigger (B). If you release the handle, the throttle trigger and the throttle trigger lockout move back to their initial positions. This function locks the throttle trigger at idle speed.

To do a check of the throttle trigger lockout

1. Make sure that the throttle trigger is locked at the

idle position when the throttle trigger lockout is released.

2. Push the throttle trigger lockout and make sure that it

goes back when you release it.

3. Make sure that the throttle trigger and throttle trigger

lockout move freely and that the return springs operate correctly.

4. Start the product and apply full throttle.

5. Release the throttle control and make sure that the

cutting blade stops and stays stationary.

6. If the cutting blade rotates at idle position, adjust the

idle speed. Refer to To adjust the idle speed on page

To do a check of the stop switch

1. Start the engine. Refer to

To start the product with a cold engine on page 23

2. Push the stop switch to the STOP position. The

engine must stop. Blade guard and SmartGuard (Optional)

WARNING: Make sure that the blade

guard and SmartGuard are correctly attached before you start the product. Do not use the product if the blade guard or SmartGuard is missing, defective or has cracks. The blade guard (A) and SmartGuard (B) are installed above the cutting blade (C). They prevent injury if pieces of the blade or cut material are thrown in the direction of the operator.

The SmartGuard is spring loaded and must always move freely and retract to its initial position by spring force. 1447 - 004 - 04.05.2021 9To examine the blade and the blade guard

WARNING: A damaged cutting blade

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

3. Replace the blade guard if it is damaged.

To do a check of the SmartGuard

WARNING: A damaged SmartGuard

can cause injury. CAUTION: The SmartGuard is a plastic guard and can become damaged by heat during intense dry cutting of metal with bonded abrasive blades. Do not do intense dry metal cutting and let the product become cool between the cuts. For intense metal cutting with SmartGuard, we recommend wet cutting together with vacuum brazed diamond blades, such as VARI-CUT FR3.

1. Make sure that the SmartGuard has no cracks or

2. Make sure that the SmartGuard moves freely without

much play and retracts by spring force.

3. Clean or replace the SmartGuard if it does not

retract immediately when pushed in, or is damaged. Vibration damping system Your product is equipped with a vibration damping system that is designed to minimize vibration and make operation easier. The product′s vibration damping system reduces the transfer of vibration between the engine unit/cutting equipment and the product′s handle unit. To do a check of the vibration damping system

WARNING: Make sure that the engine

is off and that the stop switch is in STOP position.

1. Make sure that there are no cracks or deformation

on the vibration damping units. Replace the vibration damping units if they are damaged.

2. Make sure that the vibration damping units are

correctly attached to the engine unit and handle unit. Muffler The muffler keeps the noise levels to a minimum and sends the exhaust fumes away from the operator. Do not use the product if the muffler is missing or defective. A defective muffler increases the noise level and the risk of fire.

WARNING: The muffler becomes very

hot during and after use and when the engine operates at idle speed. Be careful near flammable materials and/or fumes to prevent fire. To do a check of the muffler

• Examine the muffler regularly to make sure that it is attached correctly and not damaged. Fuel safety

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

• Fuel is flammable and the fumes are explosive. Be careful with fuel to prevent injury, fire and explosion.

• Only refuel the product outdoors, where the airflow is sufficient. Do not breathe in the fuel fumes. The fuel fumes are poisonous and can cause injury, fire and explosion.

• Do not remove the fuel tank cap or fill the fuel tank when the engine is on.

• Let the engine become cool before you refuel.

• Do not smoke near the fuel or the engine.

• Do not put hot objects near the fuel or the engine.

1447 - 004 - 04.05.2021• Do not fill fuel near sparks or flames.• Before you refuel, open the fuel tank cap slowly andrelease the pressure carefully.• Fuel on your skin can cause injury. If you get fuel onyour skin, use soap and water to remove the fuel.• If you spill fuel on your clothing, change clothingimmediately.• Tighten the fuel tank cap fully. If the fuel tank cap isnot correctly tightened, the vibrations in the productcan loosen it and cause leakage of fuel and fuelfumes. Fuel and fuel fumes are a risk of fire.• Before you start the product, move the product to aminimum of 3 m/10 ft from where you refueled. Min

• Do not start the product if there is fuel or oil spilledon the product. Remove the unwanted fuel and oiland let the product dry before you start the engine.• Examine the engine for leaks regularly. If there areleaks in the fuel system, do not start the engine untilthe leaks are repaired.• Keep fuel in approved containers only.• When the product and fuel is in storage, make surethat fuel and fuel fumes cannot cause damage, fireand explosion.• Drain the fuel in an approved container outdoors andaway from sparks and flames. Safety instructions for maintenance

WARNING: Read the warning

instructions that follow before you use theproduct.• Make sure that the engine is off and that the stopswitch is in STOP position.• Use personal protective equipment. Refer to Personal protective equipment on page 8

• If the maintenance is not done correctly andregularly, the risk of injury and damage to theproduct increases.• Only do the maintenance as given in this operator'smanual. Let an approved service center do all otherservicing.• Let an approved HUSQVARNA service agent doservicing on the product regularly.• Replace damaged, worn or broken parts.• Always use original accessories. 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 orunbalance prior to use and immediately afterstriking an unintended object. Do not use adamaged cutting blade. After inspecting andinstalling the cutting blade, position yourselfand bystanders away from the plane of therotating cutting blade and run the power toolat maximum no load speed for one minute.

WARNING: The cutting blade

manufacturer gives warnings andrecommendations for the operation andcorrect maintenance of the cutting blade.Those warnings are supplied with the cuttingblade. Read and obey the instructions thatare supplied with the cutting blade. Applicable cutting blades

WARNING: Only use diamond blades

and abrasive blades for concrete and metal.Do not use blades with serrations such ascircular wood cutting blades or blades withcarbide tips. The risk of kickback isincreased and carbide tips can come off andbe thrown at high speed. This can result ininjury or death.

WARNING: Never use a cutting blade

for any other materials than what it wasintended to cut.

WARNING: Use only cutting blades

that comply with applicable national orregional standards, for example EN12413,EN13236 or ANSI B7.1.1447 - 004 - 04.05.2021 11WARNING: 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 blade guard. 100 m/s XXXX rpm 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. CAUTION: Do not use cutting blades with thickness exceeding maximum recommended thickness. Refer to Technical data on page 34

• 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. 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. Bonded abrasive cutting blades

WARNING: Do not use bonded

abrasive cutting blades together with water. Moisture decreases the strength in the bonded abrasive cutting blade and the cutting blade can break and cause injury. A bonded abrasive cutting blade is made of small abrasive grains joined with an organic or vitrified bond, molded with fabric reinforcements, which prevents the cutting blade from breaking during high speed operation. Bonded abrasive cutting blades for different materials Note: Make sure that you use the correct cutting blades for rail cutting. Blade type Material Concrete blade Concrete, asphalt, stone masonry, cast iron, aluminum, copper, brass, cables, rubber and plastic. Metal blade Steel, alloy steel and other hard met- al. Cutting blade for rail cutting Rail To examine a bonded abrasive cutting blade

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

1447 - 004 - 04.05.2021• Hang the cutting blade on your finger and hit thecutting blade lightly with a screwdriver. If you do nothear a clear sound, the cutting blade is damaged. xxxx Diamond blades

WARNING: Diamond blades become

very hot when used. A diamond blade that istoo hot gives bad performance, bladedamage and is a safety risk.

WARNING: Do not use diamond

blades to cut plastic material. The hotdiamond blade can melt the plastic, whichcan cause a kickback.• Diamond blades have a steel core with segmentsthat are made of industrial diamonds.• Diamond blades are used for masonry, reinforcedconcrete and stone.• Make sure that the diamond blade rotates in thedirection of the arrows shown on the diamond blade.• Always use a sharp diamond blade.• Diamond blades can become blunt if you use anincorrect feeding pressure or when you cut materialssuch as hard reinforced concrete. If you use a bluntdiamond blade it becomes too hot, which can causethe diamond segments to come loose. To sharpen the cutting blade Note: For the best cutting results, use a sharp cuttingblade.• To sharpen the cutting blade, cut into soft material,such as sandstone or brick. Diamond blades for wet cutting

• Diamond blades for wet cutting must be used withwater.• Water decreases the temperature of the cuttingblade, increases its service life and decreases dustduring operation.• When wet cutting, collect the waste water safely. Diamond blades for dry cutting
• For diamond blades for dry cutting it is necessary tohave a sufficient airflow around the cutting blade todecrease the temperature. Because of this, diamondblades for dry cutting are recommended only forintermittent operation. After some seconds ofoperation, it is necessary to let the diamond bladerotate freely, away from the cut. This lets the airflowaround the blade decrease the temperature of thediamond blade. Diamond blade - side clearance

WARNING: Certain cutting situations or

poor blades can suffer excessive wear onthe side of the segments. Make sure thediamond segment (A) is wider than theblade (B). This is to prevent pinching in thecutting slot and kickback. Refer to Kickback on page 17

CAUTION: Some cutting situations and worn blades may cause increased wear onthe side of the segments. Replace the bladebefore it is worn out. Toothed blades

Never use toothed bladessuch as wood cutting blades, circulartoothed blades, carbide tipped blades, etc.The risk of kickback is significantly increasedand tips can be torn off and thrown at highspeed. Carelessness can result in seriouspersonal injury or even death.1447 - 004 - 04.05.2021 13WARNING: 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 CAUTION: Use only HUSQVARNA flange washers with a minimum diameter of 105 mm/4.1 in.

WARNING: Do not use defective, 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.

2. Make sure that the areas of contact on the cutting

blade and the flange washers are not damaged. Replace damaged parts.

3. Make sure that the flange washers are clean and of

the correct dimension.

4. Make sure that the flange washers move freely on

the spindle shaft. 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 one of these two types of arbor bushings:

• An arbor bushing that can be turned to the other side and be applicable for 20 mm/0.79 in. or 25.4 mm/1 in. center holes.

• A 25.4 mm/1 in. arbor bushing.

• A decal on the blade guard shows installed arbor bushing and specification for applicable cutting blades.

• 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.

1. Find the arrows on the rear belt guard that show the

direction of rotation of the spindle shaft.

2. Find the arrow on the cutting blade that shows the

direction of rotation of the cutting blade.

3. Make sure that the direction arrows of the cutting

blade and the spindle shaft have the same direction. To install the cutting blade

WARNING: Make sure that the engine

is off and that the stop switch is in the STOP position.

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 14

2. Push back and hold the SmartGuard in the retracted

position. Note: This step only applies to K 770 SmartGuard.

3. 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.

4. Put a tool into the hole in the front belt guard and

turn the cutting blade until the shaft is locked.

5. Tighten the cutting blade bolt to 25 Nm/18.5 ft-lb.

Only cut with the cutting head reversed if a standard procedure is not possible. The product has a reversible cutting head that lets you cut near a wall or at ground level. Only cut with the cutting head reversed if a standard procedure is not possible. If a kickback occurs, it is more difficult to control the product if the cutting head is reversed. The distance between the cutting blade and the center of the product is longer, which means that the handle and the cutting blade do not align. This has a negative effect on 1447 - 004 - 04.05.2021 15the balance in the product and it is more difficult to hold the product if the cutting blade is pinched or stalled in the kickback zone. Refer to Kickback on page 17

WARNING: Make sure that the engine

is off and that the stop switch is in the STOP position.

WARNING: Always use protective

gloves when you assemble the product.

1. Remove the cutting blade, the front belt cover and

the cutting head. Refer to steps 1-5 in To replace the drive belt on page 27

2. Remove the 2 screws and nuts that hold the spray

3. Remove the 2 screws from the adjustment handle for

4. Remove the adjustment handle for the blade guard

5. Remove the stop sleeve.

6. Move the bearing housing and install the stop

7. Install the stop sleeve.

8. Install the drive belt on the opposite side.

9. Install the cutting head and the drive belt cover, refer

To replace the drive belt on page 27

10. Install the spray nozzle and the cutting blade in the

opposite sequence to how they were removed.

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. 1447 - 004 - 04.05.2021 17Pinching 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.

• 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 pipepulling backwards, without involving the upperquadrant of the blade. Adjust the blade guard to fullforward position for maximum protection.

If the pipe is properlysupported, it should not pinch the bladewhen separated in section 5. Howeverbe alert if the blade is pinched during thefinal separation. If the blade is pinched inthe lower section, the product may pullforward away from the operator, ratherthen resulting in a rotating kickback. To prevent a kickback

WARNING: Avoid situations where

there is a risk of kickback. Take care whenusing your power cutter and make sure thatthe blade is never pinched in the kickbackzone.

WARNING: Be careful when you put

the blade in an existing cut.

WARNING: Make sure that the work

piece cannot move during a cuttingoperation.

WARNING: Only you and proper

working technique can eliminate kickbackand its dangers.• Always support the work of piece so that the cut cankeep open when cutting through. When the cut isopen there is no kickback. If the cut is closed andpinches the blade, there is a risk of kickback. Basic working techniques

Do not pull the product toone side. This can prevent the freemovement of the cutting blade. The cuttingblade can break and cause injury to theoperator or bystanders.

WARNING: Do not grind with the side

of the cutting blade. The cutting blade canbreak and cause injury to the operator orbystanders. Only use the cutting edge.

WARNING: Make sure that the cutting

blade is installed correctly and does notshow signs of damage.

WARNING: Before cutting in an

existing cut made by a different blade, makea sure that the slot is not thinner than yourblade as that can result in binding in thecutting slot and a kickback.1447 - 004 - 04.05.2021 19WARNING: Cutting metal generates sparks that can cause fire. Do not use the product near flammable material or gases.

• The product is made to cut with bonded abrasive cutting blades or diamond blades made for high speed handheld product. The product must not be used with other types of blade, or for other types of operation.

• Do a check that the correct cutting blade is used for the material to be cut. Refer to Applicable cutting blades on page 11 for instructions.

• Do not cut asbestos materials.

• Keep a safe distance from the cutting blade when the engine is on. Do not try to stop a rotating blade with a part of your body. To touch a rotating blade, although the engine is off, can result in serious injury or death.

• The cutting blade continues to rotate for a while after the throttle trigger is released. Make sure that the cutting blade has stopped before the product is moved or put down. If it is necessary to stop the cutting blade quickly, let the cutting blade lightly touch a hard surface.

• Do not move the product with the engine on.

• Hold the product with 2 hands. Hold the product tightly with thumbs and fingers fully around the plastic handles with insulation. The right hand must be on the rear handle and the left hand on the front handle. All operators must use this hold. Do not operate a power cutter with only 1 hand.

• Stand parallel to the cutting blade. Avoid standing straight behind. If a kickback occur, the saw will move in the plane of the cutting blade.

• Do not go away from the product with the engine on. Before you go away from the product, stop the engine and make sure that there is no risk of accidental start.

• Use the adjustment handle of the blade guard to adjust the rear section of the guard flush with the work piece. Spatter and sparks from the cut material are then collected up by the guard and led away from the operator. The guards for the cutting equipment must always be installed when the product is on.

• Do not use the kickback zone of the blade for cutting. Refer to Kickback zone on page 17 for instructions.

• Do not operate the product before the work area is clear and your feet and body are in a stable position.

• Do not cut above shoulder height.

• Do not cut from a ladder. Use a platform or scaffold if the cut is above shoulder height. Do not overreach.

• Stay at a comfortable distance from the work piece.

• Make sure that the cutting blade can move freely when the engine is started.

• Apply the cutting blade carefully with high rotating speed (full throttle). Keep full speed until cutting is complete.

• Let the product do the work. Do not push the cutting blade.

1447 - 004 - 04.05.2021• Feed the product down in line with the blade. Pressure from the side can cause damage to the blade and is very dangerous.

• Move the blade slowly forward and rearward to get a small contact area between the blade and the material to be cut. This decreases the temperature of the blade and is an effective way to cut. Basic working techniques with K 770 SmartGuard

The SmartGuard function is disengaged if the SmartGuard is manually retracted. Only retract the SmartGuard manually if you must and there are no risks of kickback. SmartGuard gives more coverage of the blade. This decreases the risk that you touch the blade if a kickback occurs.

• You can retract the SmartGuard manually with the SmartGuard handle.

• Hold the SmartGuard handle with a left hand finger while the remaining fingers hold the front handle at the same time. 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 Cutting blades on page 11

• 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

Technical data on page 34 . If the water hose comes off at the supply source, the supplied water pressure can be too high. Fuel This product has a two-stroke engine. CAUTION: Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil. Two-stroke oil

• For best results and performance use HUSQVARNA two-stroke oil.

• If HUSQVARNA two-stroke oil is not available, use a two-stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil. CAUTION: Do not use two-stroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines. Premixed fuel

• Use HUSQVARNA premixed alkylate fuel for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is 1447 - 004 - 04.05.2021 21lower with this fuel, which keeps the components of the engine more clean. To mix gasoline and two-stroke oil Gasoline, liter Two-stroke oil, liter 2% (50:1)

US gallon US fl. oz. 1 2 ½ 2 1/2 6 ½ 5 12 ⅞ CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.

1. Fill half the quantity of gasoline in a clean container

2. Add the full quantity of oil.

3. Shake the fuel mixture.

4. Add the remaining quantity of gasoline to the

5. Carefully shake the fuel mixture.

CAUTION: Do not mix fuel for more than 1 month at a time. OilGuard Note: Applicable only to K 770 installed with OilGuard (optional) and filled with a mixture of gasoline and HUSQVARNA two-stroke oil.

• OilGuard is a built-in system that senses an incorrect fuel mixture.

• When the product operates, a detector reads the fuel mixture during 10 seconds. If the correct mixture is used, the product operates at the correct speed. If the incorrect mixture is used, the product decreases the engine speed to 3800 rpm to prevent engine failure.

• To make the product operate at the correct speed, drain the incorrect fuel mixture. See To mix gasoline and two-stroke oil on page 22 . Fill the product with the correct fuel mixture. OilGuard oil Use HUSQVARNA OilGuard oil when you use the OilGuard system. OilGuard oil has a special color that is necessary for the OilGuard system to work correctly. To disengage the OilGuard Note: A broken indicator pin shows that the OilGuard system is disengaged. You cannot use a broken indicator pin again to engage the OilGuard system. The OilGuard plug (A) and a blue indicator pin (B) are factory installed in the tank. The OilGuard lid (C) comes as a spare part. If you do not have access to the OilGuard oil, disengage the OilGuard system.

1. Remove the OilGuard plug (A) with a screwdriver.

To engage the OilGuard system Note: You cannot use a broken indicator pin to engage the OilGuard system again. You can get a new indicator pin as a spare part. The spare part of the indicator pin is grey to show that the OilGuard system has been disengaged after the product left the factory.

1. Remove the OilGuard lid from the tank. Refer to

disengage the OilGuard on page 22

3. Install the OilGuard plug in the tank.

To fill fuel CAUTION: Do not use gasoline with an octane number less than 90 RON (87 AKI). It causes damage to the product. CAUTION: Do not use gasoline with more than 10% ethanol concentration (E10). It causes damage to the product. Note: Carburetor adjustment is in some conditions necessary when you change the type of fuel.

• Use gasoline with a higher octane number if you frequently use the product at continuously high engine speed.

1. Open the fuel tank cap slowly to release the

2. Fill slowly with a fuel can. If you spill fuel, remove it

with a cloth and let the remaining fuel dry off.

3. Clean the area around the fuel tank cap.

4. Tighten the fuel tank cap fully. If the fuel tank cap is

not tightened, there is a risk of fire.

5. Move the product a minimum of 3 m (10 ft) from the

position where you filled the tank before a start. To start the product with a cold engine

Make sure that the cutting blade can rotate freely. It starts to rotate when the engine starts.

1. Make sure that the STOP switch is in the left

2. Pull the choke control fully to get the start throttle

3. Push the decompression valve to decrease the

pressure in the cylinder. The decompression valve goes back to its initial position when the product starts.

4. Push the air purge bulb 6 times until it is fully filled

5. Hold the front handle with your left hand.

6. Put your right foot on the lower section of the rear

handle to push the product against the ground.

Do not wind the starter rope around your hand. 1447 - 004 - 04.05.2021 237. Pull the starter rope slowly with your right hand until you feel a resistance as the starter pawls engage. Then pull continuously and quickly. CAUTION: Do not pull the starter rope fully and do not let go of the starter rope handle when the starter rope is extended. This can cause damage to the product.

8. Push the choke control when the engine starts. If the

choke is pulled out, the engine will stop after some seconds. If the engine stops, pull the starter rope handle again.

9. Push the throttle trigger to disengage the start

throttle and set the product at idle speed. To start the product with a warm engine

WARNING: Make sure that the cutting

blade can rotate freely. It starts to rotate when the engine starts.

1. Make sure that the STOP switch is in the left

2. Pull the choke control fully to get the start throttle

3. Push the decompression valve to decrease the

pressure in the cylinder. The decompression valve goes back to its initial position when the product starts.

1447 - 004 - 04.05.20214. Push the choke control to disable the choke. The start throttle stays in position.

5. Hold the front handle with your left hand.

6. Put your right foot on the lower section of the rear

handle to push the product against the ground.

WARNING: Do not wind the starter

rope around your hand.

7. Pull the starter rope slowly until you feel a resistance

as the starter pawls engage. Then pull continuously and quickly. CAUTION: Do not pull the starter rope fully and do not let go of the starter rope handle when the starter rope is extended. This can cause damage to the product.

8. Push the throttle trigger to disengage the start

throttle and set the product at idle speed. To stop the product

WARNING: The cutting blade

continues to rotate for a while after the engine stops. Make sure that the cutting blade can rotate freely until it fully stops. If it is necessary to stop the cutting blade quickly, let the cutting blade lightly touch a hard surface. Risk of serious injury.

• Move the STOP switch to the right to stop the engine. Maintenance Introduction

WARNING: Read and understand the

safety chapter before you do maintenance on the product. For all servicing and repair work on the product, special training is necessary. We guarantee that professional repairs and servicing is available. If your dealer is not a service agent, speak to them for information about the nearest service agent. For spare parts, speak to your HUSQVARNA dealer or service agent. Maintenance schedule The maintenance schedule shows the necessary maintenance of the product. The intervals are calculated on daily use of the product. 1447 - 004 - 04.05.2021 25Daily Weekly Monthly Yearly Clean External cleaning Spark plug Cold air intake Fuel tank Function inspection General inspection Vibration damping system* Fuel system Fuel leaks Muffler* Air filter Water delivery system Drive belt Clutch Throttle lockout* Carburetor Stop switch* Starter housing Blade guard and SmartGuard* Cutting blade** Replace Fuel filter

• Refer to Safety devices on the product on page 8

** Refer to Cutting blades on page 11

• Flush the product externally with clean water after each day of operation. If it is necessary, use a brush. To clean the air intake CAUTION: A dirty or blocked air intake makes the product too hot. This can cause damage to the piston and cylinder.

• Clean the air intake if it is necessary.

• Remove blockage, dirt and dust with a brush. To do a check of the spark plug CAUTION: Always use the recommended spark plug type. Use of the incorrect spark plug can cause damage to the piston and cylinder. For recommended spark plug refer to Technical data on page

Examine the spark plug if the product is low on power, does not start easily or if it operates unsatisfactorily at idle speed.

1. Loosen the 3 screws on the air filter cover and

remove the air filter cover.

2. Make sure that the spark plug cap and ignition cable

WARNING: A damaged spark plug

5. Make sure that the electrode gap is 0.5 mm.

To do a general inspection

• Make sure that all nuts and screws on the product are tightened correctly. To replace the drive belt

WARNING: Do not start the product

without all guards and covers installed.

1. Loosen the 3 nuts on the front belt guard (A) and

turn the belt tensioner (B) to the position 0.

2. Remove the front belt guard.

3. Remove the 2 screws on the rear belt guard.

Remove the rear belt guard.

4. Replace the drive belt. Turn the belt tensioner to the

5. Install the 2 belt guards in opposite sequence.

6. Adjust the tension on the drive belt. Refer to

adjust the tension of the drive belt on page 27

To adjust the tension of the drive belt Note: Adjust the tension of a new drive belt after you use 1 or 2 fuel tanks.

1. Loosen the 3 nuts.

1447 - 004 - 04.05.2021

272. Move the blade guard (A) up and down 3–5 times.

WARNING: Always be careful and

always use eye protection when you replace the recoil spring or the starter rope. There is tension in the recoil spring when it is wound in the starter housing. The recoil spring can eject and cause injury. To remove the starter housing

1. Loosen the 4 screws on the starter housing.

2. Remove the starter housing.

To replace a damaged starter rope

1. Pull out the starter rope approximately 30 cm.

2. Hold the starter rope pulley (A) with your thumb.

3. Put the starter rope in the notch (B) in the starter

4. Put the starter rope around the metal sleeve (C).

5. Let the starter pulley rotate slowly and the starter

rope wind up on the metal sleeve.

6. Remove the starter rope from the metal sleeve.

8. Pull the starter rope up through the handle (B).9. Release the knot (C).10. Remove the starter rope.11. Make sure that the recoil spring is clean and notdamaged.12. Put a new starter rope (A) in the hole in the starterhousing.

13. Pull the starter rope through the starter rope handleand make a knot at the end of the starter rope (A).

14. Attach the cover on the starter rope handle (B).15. Adjust the tension of the recoil spring. Refer to

adjust the tension of the recoil spring on page 29

To adjust the tension of the recoil spring

1. Pull out the starter rope.2. Hold the starter rope pulley (A) with your thumb.

3. Put the starter rope in the notch (B) and wind it uparound the metal sleeve (C).4. Pull out the starter rope (A).

5. Put your thumb on the starter pulley (B) to keep thestarter rope pulled out.1447 - 004 - 04.05.2021

296. Release the starter rope from the notch.

7. Remove your thumb to release the starter pulley (A)

and let the starter rope (B) wind up on the pulley.

8. Pull out the starter rope fully to do a check that the

recoil spring is not at its end position. Make sure that the starter pulley can be turned half a turn or more before the recoil spring stops the movements. To remove the spring assembly

Always use eye protection when you remove the spring assembly. There is a risk for eye injury, especially if a spring is broken.

1. Remove the 2 screws on the spring assembly.

2. Push the 2 brackets on the snap locks with a

screwdriver. To clean the spring assembly CAUTION: Do not remove the spring from the assembly.

1. Blow the spring with compressed air until it is clean.

2. Apply a light oil to the spring.

To attach the spring assembly

• Assemble in the opposite sequence of To remove the spring assembly on page 30

To install the starter housing CAUTION: The starter pawls must come into the correct position against the starter pulley sleeve.

1. Put the starter housing against the product.

2. Pull out and release the starter rope slowly until the

starter pulley engages with the starter pawls.

3. Tighten the 4 screws on the starter housing.

To examine the carburetor Note: The carburetor has rigid needles to make sure that the product always receives the correct mixture of fuel and air.

1. Examine the air filter. Refer to

To examine the air filter on page 31

2. If it is necessary, replace the air filter.

3. If the engine continues to decrease in power or

speed, speak to your HUSQVARNA servicing dealer. To examine the fuel system

1. Make sure that the fuel tank cap and its seal are not

2. Examine the fuel hose. Replace the fuel hose if it is

damaged. To adjust the idle speed

If the cutting blade rotates at idle speed, speak to your servicing dealer. Do not use the product until the idle speed is correctly adjusted or repaired. Note: For recommended idle speed refer to Technical data on page 34

1. Start the engine.

1447 - 004 - 04.05.20212. Examine the idle speed. When the carburetor is correctly adjusted, the cutting blade stops when the engine is at idle speed.

3. Use the T screw to adjust the idle speed.

a) Turn the screw clockwise until the blade starts to rotate (A). b) Turn the screw counterclockwise until the blade stops to rotate (B). Fuel filter The fuel filter is installed in the fuel tank. The fuel filter prevents contamination of the fuel tank when the fuel tank is filled. The fuel filter must be replaced yearly or more frequently if it is clogged. CAUTION: Do not clean the fuel filter. To examine the air filter Note: Examine the air filter only if the engine power decreases. CAUTION: Be careful when you remove the air filter. Particles that fall into the carburetor inlet can cause damage.

WARNING: Use approved respiratory

protection when you replace the air filter. The dust in the air filter is dangerous to your health. Discard used air filters correctly.

1. Loosen the 3 screws on the air filter cover.

2. Remove the air filter cover.

3. Examine the air filter and replace it if it is necessary.

CAUTION: Do not clean the air filter or blow compressed air on it. This will do damage to the air filter.

4. Replace the air filter if it is necessary.

a) Remove the air filter. b) Install the new air filter.

5. Attach the air filter cover and tighten the 3 screws.

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. 1447 - 004 - 04.05.2021

314. Clean as necessary. 5. Examine the hoses and make sure that they are not

damaged. Troubleshooting Problem Cause Possible solutions The product does not start. The start procedure is done incor- rectly. Refer to To start the product with a cold en- gine on page 23 and To start the product with a warm engine on page 24

The stop switch in the right (STOP) position. Make sure that the stop switch (STOP) is in the left position. There is no fuel in the fuel tank. Fill with fuel. The spark plug is defective. Replace the spark plug. The clutch is defective. Speak to your service agent. The cutting blade rotates at idle speed. The idle speed is too high. Adjust the idle speed. The clutch is defective. Speak to your service agent. The cutting blade does not rotate when the operator throttles up. The belt is too loose or defective. Tighten the belt or replace the belt with a new one. The clutch is defective. Speak to your service agent. The cutting blade is installed incor- rectly. Make sure that the cutting blade is correctly installed. The product has no power when the operator tries to throttle up. The air filter is clogged. Examine the air filter. If it is necessary, re- place it. The fuel filter is clogged. Replace the fuel filter. The fuel tank flow is blocked. Speak to your service agent. The vibration levels are too high. The cutting blade is installed incor- rectly. Make sure that the cutting blade is correctly installed and that it is not damaged. Refer to To install the cutting blade on page 15

The cutting blade is defective. Replace the cutting blade and make sure that it is not damaged. A vibration damping unit is defective. Speak to your service agent. 32 1447 - 004 - 04.05.2021Problem Cause Possible solutions The temperature of the prod- uct is too high. The air intake or the cylinder flanges are blocked. Clean the air intake and the cylinder flanges. The drive belt tension is not suffi- cient. Examine the belt. Adjust the tension. The clutch is defective. Always cut at full throttle. Examine the clutch. Speak to your service agent. The engine decreases in power or in speed. The air filter is clogged. Examine the air filter. Refer to To examine the air filter on page 31

There is much dust during operation. You can see dust in the air. The water supply or water pressure is not sufficient. Do a check of the water supply to the prod- uct. Refer to To do a check of the water supply system on page 31

The SmartGuard does not move freely. The SmartGuard does not re- tract when the product is re- moved away from the work piece. The moving parts of the SmartGuard are clogged. Clean the moving parts. The springs of the SmartGuard does not operate correctly. Do a check of the springs. Clean the springs. Transportation, storage and disposal Transportation and storage

• Safely attach 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.

• Examine all new and used blades for transport and storage damage before assembly.

• Clean and maintain the product before storage. Refer to Maintenance on page 25

• Remove the fuel from the fuel tank before long-term storage. Disposal

• Obey the local recycling requirements and applicable regulations.

• Discard all chemicals, such as oil or fuel, at a service center or at an applicable disposal location.

• When the product is no longer in use, send it to a HUSQVARNA dealer or discard it at a recycling location. 1447 - 004 - 04.05.2021 33Technical data Technical data K 770, K 770 OilGuard, K 770 Rescue K 770 SmartGuard Cylinder displacement, cm

Max. spindle speed with cutting blade 350mm (14in.), rpm

Equivalent sound pressure level at the ear of the op- erator, dB (A)

Noise emissions in the environment are measured as sound power (L

) in conformity with directive 2000/14/EC. The difference between guaranteed and measured sound power is that the guaranteed sound power includes dispersion in the measured result and variations between different units of the same product according to directive 2000/14/EC.

Equivalent sound pressure level, according to EN ISO 19432-1, is calculated as the time-weighted energy to- tal for different sound pressure levels in various working conditions. Reported data for equivalent sound pres- sure level for the product has a typical statistical dispersion (standard deviation) of 1 dB (A). 34 1447 - 004 - 04.05.2021K 770, K 770 OilGuard, K 770 Rescue K 770 SmartGuard Equivalent vibration levels, a hveq

2.0/2.3 2.2/2.1 Recommended cutting blade dimensions Cutting blade di- ameter, mm/in. Max. cutting depth, mm/in. Blade speed rat- ing, rpm Blade speed rat- ing, m/s or ft/min Blade center hole diameter, mm/in. Max. blade thick- ness, mm/in. 300/12 100/4 5100 80 or 16000 25.4/1 or 20/0.79 5/0.2 350/14 125/5 5500 100 or 19600 25.4/1 or 20/0.79 5/0.2 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 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. Accessories Sensor for Husqvarna Fleet Services

This product is compatible with the Husqvarna Fleet machine sensor. The product can then be connected to Husqvarna Fleet Services

, which is a cloud solution that gives the commercial fleet manager an overview of all products. For more information about Husqvarna Fleet Services

, refer to www.husqvarna.com. Wheel kit The wheel kit is attached at the bottom of the product. Cutting trolley A cutting trolley makes it easier to cut in floors and roads, especially long cuts at a set depth. Quick connections make it easy to install the product on the cutting trolley.

Equivalent vibration level, according to EN ISO 19432-1, is calculated as the time-weighted energy total for vibration levels in different work conditions. Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1m/s

1447 - 004 - 04.05.2021 35Declaration of Conformity EU Declaration of Conformity We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare on our sole responsibility that the product: Description Portable cut-off machine Brand HUSQVARNA Type/Model K 770, K 770 OilGuard, K 770 Rescue, K 770 SmartGuard Identification Serial numbers dating from 2021 and onwards complies fully with the following EU directives and regulations: Directive/Regulation Description 2006/42/EC "relating to machinery" 2000/14/EC "relating to outdoor noise" 2014/30/EU "relating to electromagnetic compatibility" 2011/65/EU "relating to restrictions of hazardous substances" and that the following harmonized standards and/or technical specifications are applied;

63000:2018. 2000/14/EC, conformity assessment procedure: Annex

V. For information relating to noise emissions, refer to

Partille, 2021-04-29 Erik Silfverberg R&D Director, Concrete Sawing & Drilling Equipment Husqvarna AB, Construction Division Responsible for technical documentation 36 1447 - 004 - 04.05.2021UK Declaration of Conformity We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare on our sole responsibility that the product: Description Portable cut-off machine Brand HUSQVARNA Type/Model K 770, K 770 OilGuard, K 770 Rescue, K 770 SmartGuard Identification Serial numbers dating from 2021 and onwards complies fully with the following UK directives and regulations: Regulation Description S.I. 2008/1597 The Supply of Machinery (Safety) Regulations 2008 S.I. 2016/1091 Electromagnetic Compatibility Regulations 2016 S.I. 2001/1701 The Noise Emission in the Environment by Equipment for use Outdoors Regula- tions 2001 S.I. 2012/3032 The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 and that the following harmonized standards and/or technical specifications are applied;

63000:2018. Conformity assessment procedure acc S.I. 2001/1701: Schedule 8 . For information relating to noise emissions, refer to Technical data on page 34