Husqvarna K 40 AIR Power Cutter Saw 968372401, 14"

Safety Information

Husqvarna K 40 Air Power Cutter Saw 968372401

SAFETY INSTRUCTIONS

Steps before using a new power cutter.

• This machine is a hydraulically operated power cutter intended for free-hand cutting. The machine should be connected to a hydraulic unit with an oil flow of 35-42
liters/min and a maximum pressure of 150 bar.
• Please read the operator’s manual carefully.
• Check the cutting blade’s mounting, see the chapter ”Assembly”.
• Check that the air hose is in full working order and in good condition.

Let your Husqvarna dealer regularly check the power cutter and make essential adjustments and repairs.

WARNING! Under no circumstances may the design of the machine be modified without
the permission of the manufacturer. Always use genuine accessories. Non-authorized
modifications and/or accessories can result in serious personal injury or the death of the operator or others.

WARNING! Use of products which cut, grind, drill, sand or shape material can generate
dust and vapors which may contain harmful chemicals. Know the nature of the material
being worked on and wear appropriate dust mask or respirator protection.
!
WARNING! A power cutter is a dangerous tool if used carelessly or incorrectly and can
cause serious, even fatal injuries. It is extremely important that you read and
understand the contents of this Operator’s Manual.
!
WARNING! Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities contains chemicals known (to the State of California) to cause
cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

Lead from lead-based paints.

Crystalline silica from bricks, cement and other masonry products.

Arsenic and chromium from chemically treated lumber.

Your risk from these exposures varies, depending on how often you do this type of
work. To reduce your exposure to these chemicals: work in a well ventilated area,
and work with approved safety equipment, such as those dust makes that are specially
designed to filter out microscopic material

Husqvarna Construction Products has a policy of continuous product development. Husqvarna reserves the right to modify the design and appearance of products without prior notice and without further obligation introduce design modifications.
All information and all data in the Operator’s Manual were applicable at the time the Operator’s Manual was sent to print

Personal protective equipment

WARNING! You must use approved personal protective equipment whenever you use the
machine. Personal protective equipment cannot eliminate the risk of injury but it will
reduce the degree of injury if an accident does happen. Ask your dealer for help in
choosing the right equipment

• Protective helmet
• Hearing protection
• Protective goggles or a visor
• Breathing mask
• Heavy-duty, firm grip gloves.
• Tight-fitting, heavy-duty and comfortable clothing that permits full freedom of movement.
• Use leg-guards recommended for the material to be cut.
• Boots with steel toe-caps and non-slip sole
• Always have a first aid kit nearby

Machine′s safety equipment

This section describes the machine′s safety equipment, its
purpose, and how checks and maintenance should be carried
out to ensure that it operates correctly. See the ”What is
what?” section to locate where this equipment is positioned
on your machine.

WARNING! Never use a machine that has faulty safety equipment! Carry out the
inspection, maintenance and service routines listed in this section.

Switch

The switch is used to start and stop the machine.

Switch lock

The switch lock is designed to prevent accidental operation of the switch. When the lock (A) is pressed in this releases the switch (B).

The switch lock remains pressed as long as the switch is pressed. When you release your grip on the handle this resets both the switch and the switch lock. This takes place via two independent return spring systems. This position causes the machine to stop and the switch to be locked.

Guard for the blade

This guard is fitted above the cutting blade and is designed to prevent parts of the blade or cutting fragments from being thrown towards the user.

Checking, maintaining and servicing the machine′s safety equipment


WARNING! All servicing and repair work on the machine requires special training. This is especially true of the machine′s safety equipment. If your machine fails any of the checks described below you must contact your service agent. When you buy any of our products we guarantee the availability of professional repairs and service. If the retailer who sells your machine is not a servicing dealer, ask him for the address of your nearest service agent.

Checking the starting and stopping functions of the switch

Start the machine, release the switch, and check that the machine and blade stop.

Checking the switch lock

Check that the switch is locked when the switch lock is in its home position.

Press the switch lock and check that it returns to its home position when released.

Check that the switch and switch lock move freely and that their return spring systems function.

Start the machine, release the switch, and check that the machine and blade stop.

Checking the blade guard

WARNING! Always check that the guard is correctly fitted before starting the machine. Check that the cutting blade is fitted correctly and does not show signs of damage. A damaged cutting blade can cause personal injury. See instructions under the heading Assembly.

Check that the guard is complete and without any cracks or deformations
.
General safety precautions

• A power cutter is designed to cut hard materials, such as masonry. Observe the increased risk of kickback when cutting soft materials. See instructions under the heading
How to avoid kickback.
• Do not use the power cutter until you have read the entire contents of this Operator’s Manual.
All servicing, in addition to the points listed in the section ”Control, maintenance and service of the power cutter’s safety equipment”, should be carried out by trained service specialists.
• Never use the machine if you are tired, if you have drunk alcohol, or if you are taking medication that could affect your vision, your judgement or your co-ordination.
• Wear personal protective equipment. See instructions under the heading Personal protective equipment.
• Never use a machine that has been modified in any way from its original specification.
• Never use a machine that is faulty. Carry out the checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualified specialists. See
instructions under the heading Maintenance.
• Never allow anyone else to use the machine without first ensuring that they have understood the contents of the operator’s manual.

Transport and storage

Do not store or transport the power cutter with the cutting blade fitted.

Store the power cutter in a lockable area so that it is out of reach of children and unauthorized persons.

All blades should be removed from the cutter after use and stored carefully. Store cutting blades in dry, frost free conditions.

Special care should be taken with abrasive discs. Abrasive discs must be stored on a flat, level surface. If blades are supplied with a backing pad then a spacer should be used to keep them flat. If an abrasive disc is stored in humid
conditions, this can cause imbalance and result in injury.

Inspect new blades for transport or storage damage.

General working instructions

WARNING! This section describes basic safety directions for using a power cutter. This information is never a substitute for professional skills and experience. If you get into a situation where you feel unsafe, stop
and seek expert advice. Contact your dealer, service agent or an experienced power cutter user. Do not attempt any task that you feel unsure of!

Basic safety rules

• Look around you:
- To ensure that people, animals or other things cannot affect your control of the machine.
- To make sure that none of the above come into contact with the cutting blade.
• Do not use the machine in bad weather, such as dense fog, rain, strong wind, intense cold, etc. Working in bad weather is tiring and can lead to dangerous conditions, e.g. slippery surfaces.
• Never start to work with the power cutter before the working area is clear and you have a firm foothold. Look out for any obstacles with unexpected movement. Ensure when cutting that no material can become loose and fall, causing operating injury. Take great care when working on sloping ground.
• Make sure that no clothes or parts of the body come in contact with the cutting equipment when it is rotating.
• Keep at a safe distance from the cutting equipment when it is rotating.
• The guard for the cutting equipment must always be on when the machine is running.
• Ensure that the working area is sufficiently illuminated to create a safe working environment.
• Do not move the machine when the cutting equipment is rotating.
• Always ensure you have a safe and stable working position.
• Make sure that no pipes or electrical cables are routed in the area to be cut.
• Ensure the cord is behind you when you start to use the machine so that the cord will not be damaged.

Cutting

WARNING! The safety distance for the power cutter is 15 meters. You are responsible to ensure that animals and onlookers are not within the working area. Do not start cutting until the working area is clear and you are
standing firmly.

General

• Start cutting with the machine running at maximum speed.
• Always hold the machine in a firm grip with both hands.
Hold it so that the thumbs and fingers grip round the handles.

Cutting technique

The technique described below is of a general character.
Check information for each blade regarding individual cutting characteristics (for example, diamond blades requires less feeding pressure than an abrasive discs).
• Support the work piece in such a way that it is possible to predict what will happen, and so that the cut remains open while cutting.
• Check that the blade is not in contact with anything when the machine is started
• Always cut at maximum speed.
• Start cutting smoothly, allowing the machine to work without forcing or pressing in the blade.
• Move the blade slowly forwards and backwards to achieve a small contact area between the blade and the material to be cut. This reduces the temperature of the blade and ensures effective cutting.
• Feed down the machine in line with the blade. Pressure from the side can damage the blade and is very dangerous.
• The guard for the cutting equipment should be adjusted so that the rear section is flush with the work piece. Spatter and sparks from the material being cut are then collected up by the guard and led away from the user.

WARNING! Under all circumstances avoid grinding using the side of the blade; it will almost certainly be damaged, break and can cause immense damage. Only use the
cutting section.

Do not pull the power cutter to one side, this can cause the blade to jam or break
resulting in injury to people.

Blade vibration

The blade can become out-of-round and vibrate if an excessive feed pressure is used.

A lower feed pressure can stop the vibration. Otherwise replace the blade. The blade must be of the recommended type for the material to be cut.

How to avoid kickback

WARNING! Kickback can happen very suddenly and violently; kicking the power
cutter and cutting blade back at the user. If this happens when the cutting blade is moving it can cause very serious, even fatal injuries. It is vital you understand what causes kickback and that you can avoid it by taking care and using the right working technique.

What is kickback?

The word kickback is used to describe the sudden reaction that causes the power cutter and cutting blade to be thrown from an object when the upper quadrant of the blade, known as the kickback zone, touches an object.

General rules

• Never start to cut with the upper quadrant of the blade as shown in the figure, also known as the kickback zone.
• Always hold the machine in a firm grip with both hands.
Hold it so that the thumbs and fingers grip round the handles.
• Keep a good balance and a firm foothold.
• Always cut at maximum speed.
• Stand at a comfortable distance from the work piece.
• Take care when inserting the blade in an existing cut.
• Never cut above shoulder height.
• Be alert to movement of the work piece or anything else that can occur, which could cause the cut to close and pinch the blade.

Pull in

Pull in occurs when the disc’s lower section suddenly stops or when the cut closes. (To avoid, see the heading ”Basic rules” and ”Jamming/rotation”, here below.)

Pinching/rotation

If the cut is pressed together this can lead to jamming. The machine can be pulled down suddenly with a very powerful jerk.

How to avoid pinching

Support the work piece in such a way that the cut remains open during the cutting operation and when the cut is finished.

Cutting blades

WARNING! A cutting blade may burst and cause injury to the operator.

Never use a cutting blade at a lower speed rating than that of the power cutter.

Never use a cutting blade for any other purpose than that it was intended for.
!
WARNING! Cutting plastics with a diamond blade or rescue blade can cause kickback
when the material melts due to the heat produced when cutting and sticks to the
blade.

General

Cutting blades are available in two basic designs; abrasive discs and diamond blades.

Always remove the cutting blade when the machine is transported.

Make sure that the right bushing is used for the cutting blade to be fitted on the machine. See the instructions under the heading Assembling the cutting blade.

High-quality blades are often most economical. Lower quality blades often have inferior cutting capacity and a shorter service life, which results in a higher cost in relation to the quantity of material that is cut.

Water cooling

WARNING! Water cooling, which is used when cutting concrete, cools the blade and
increases its service life while also reducing the formation of dust. Disadvantages include difficulties at very low temperatures, the risk of damaging floors and other structural elements, and the risk of slipping.

After using an abrasive disc with water cooling, run the disc dry for about half a minute. If an abrasive disc is stored in humid conditions, this can cause imbalance and result in injury.

Hand-held, high-speed machines

Our cutting blades are manufactured for high-speed, portable power cutters. If blades from other manufacturers are used, ensure that the blades conform to all regulations and demands that concern this type of power cutter.

Special blades

Some cutting blades are designed for stationary equipment and for use with attachments. Such cutting blades must not be used on portable power cutters.
Always contact local authorities and make sure you are following applicable directives.

Abrasive discs

The cutting material on abrasive discs consists of grit bonded using an organic binder. ”Reinforced blades” are made up of a fabric or fiber base that prevents total breakage at maximum working speed if the blade should be cracked or damaged.
A cutting blade’s performance is determined by the type and size of abrasive corn, and the type and hardness of the bonding agent

Check that the blade is approved for the same or higher speed according to the approval plate of the engine. Never use a cutting blade with a lower speed rating than that of the power cutter.

Ensure the blade it not cracked or damaged in any other way.

Test the abrasive disc by hanging it on your finger and tapping it lightly with a screwdriver or the like. If the disc does not produce a resonant, ringing sound it is damaged

Diamond blades

Diamond blades consist of a steel body provided with segments that contain industrial diamonds.

Diamond blades ensure lower costs per cutting operation, fewer blade changes and a constant cutting depth.

When using diamond blades make sure that it rotates in the direction indicated by the arrow on the blade.

Always use a sharp diamond blade. Sharpen the blade by cutting in a soft material such as sandstone or brick.

Diamond blades are available in several hardness classes. A "soft" diamond blade has a relatively short service life and large cutting capacity. It is used for hard materials such as granite and hard concrete. A "hard" diamond blade has a
longer service life and reduced cutting capacity, and should be used for soft materials such as brick and asphalt.

Sharpening diamond blades

Diamond blades can become dull when the wrong feeding pressure is used or when cutting certain materials such as heavily reinforced concrete. Working with a blunt diamond blade causes overheating, which can result in the diamond
segments coming loose.

Sharpen the blade by cutting in a soft material such as sandstone or brick.

Material

Diamond blades are ideal for masonry, reinforced concrete and other composite materials. Diamond blades are not recommended for cutting metal.

Diamond blades for wet cutting

WARNING! Cool diamond blades for wet cutting continuously with water to prevent
overheating, which can cause the blade to break up and eject pieces that can cause
injury.

Diamond blades for wet cutting should have water poured
over them during the cutting to cool the blade and bond the
dust.

Diamond blades for dry cutting

Diamond blades for dry cutting are a new generation of blades that do not require water cooling. However, the blades will still be damaged by excessive heat. It is most economical to allow the blade to cool by simply lifting it out from the cut every 30– 60 seconds and letting it rotate in the air for 10 seconds.