K 970 Rescue US
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K 970 Rescue US
Operator’s manual
Please read the operator’s manual carefully and make sure you understand the
instructions before using the machine. It is the owner’s responsibility to make
sure that any persons who use this power cutter have read this manual!
2 – English
KEY TO SYMBOLS
Symbols on the machine
WARNING! The machine can be a
dangerous tool if used incorrectly or
carelessly, which can cause serious or
fatal injury to the operator or others.
Please read the operator’s manual
carefully and make sure you understand the
instructions before using the machine.
Wear personal protective equipment. See
instructions under the heading ”Personal
protective equipment”.
WARNING! Dust forms when cutting, this
can cause injuries if inhaled. Use an
approved breathing mask. Avoid inhaling
petrol fumes and exhaust fumes. Always
provide for good ventilation.
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 machine.
WARNING! Sparks from the cutting blade
can cause fire in combustible materials
such as: petrol (gas), wood, dry grass etc.
Choke
Air purge
Decompression valve
Refuelling, petrol/oil mix
You will find the following labels on your power cutter:
The Emissions Compliance Period referred to on the
Emission Compliance label indicates the number of operating
hours for which the engine has been shown to meet Federal
and Californian emissions requirements.
Other symbols/decals on the machine refer to special
certification requirements for certain markets.
Explanation of warning levels
The warnings are graded in three levels.
WARNING!
CAUTION!
NOTICE!
!
WARNING! Used if there is a risk of serious
injury or death for the operator or damage to
the surroundings if the instructions in the
manual are not followed.
!
CAUTION! Used if there is a risk of injury to
the operator or damage to the surroundings
if the instructions in the manual are not
followed.
NOTICE! Used if there is a risk of damage to materials or
the machine if the instructions in the manual are not
followed.
The engine exhaust from this product
contains chemical known to the State
of California to cause cancer, birth
defects or other reproductive harm.
English – 3
CONTENTS
Contents
KEY TO SYMBOLS
Symbols on the machine ............................................. 2
Explanation of warning levels ...................................... 2
CONTENTS
Contents ...................................................................... 3
PRESENTATION
Dear customer! ............................................................ 4
Features ....................................................................... 4
PRESENTATION
What is what on the power cutter - K 970 Rescue? ..... 5
MACHINE´S SAFETY EQUIPMENT
General ........................................................................ 6
CUTTING BLADES
General ........................................................................ 8
Abrasive blades ........................................................... 8
Diamond blades ........................................................... 9
Toothed blades, carbide tipped blades and emergency
situations ...................................................................... 9
Transport and storage .................................................. 10
ASSEMBLING AND ADJUSTMENTS
General ........................................................................ 11
Checking the drive shaft and flange washers .............. 11
Checking the bushing .................................................. 11
Checking the direction of the blade rotation ................. 11
Fitting the cutting blade ................................................ 11
Blade guard ................................................................. 11
Reversible cutting head ................................................ 12
FUEL HANDLING
General ........................................................................ 13
Fuel .............................................................................. 13
Fueling ......................................................................... 13
Transport and storage .................................................. 14
OPERATING
Protective equipment ................................................... 15
General safety precautions .......................................... 15
Transport and storage .................................................. 19
STARTING AND STOPPING
Before starting ............................................................. 20
Starting ........................................................................ 20
Stopping ....................................................................... 21
MAINTENANCE
General ........................................................................ 22
Maintenance schedule ................................................. 22
Cleaning ....................................................................... 23
Functional inspection ................................................... 23
TECHNICAL DATA
Technical data .............................................................. 27
Cutting equipment ........................................................ 27
FEDERAL EMISSION CONTROL WARRANTY
STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS ..... 28
4 – English
PRESENTATION
Dear customer!
Thank you for choosing a Husqvarna product!
It is our wish that you will be satisfied with your product and
that it will be your companion for a long time. A purchase of
one of our products gives you access to professional help with
repairs and services. If the retailer who sells your machine is
not one of our authorised dealers, ask him for the address of
your nearest service workshop.
This operator’s manual is a valuable document. Make sure it
is always at hand at the work place. By following its content
(using, service, maintenance etc) the life span and the
second-hand value of the machine can be extended. If you
ever lend or sell this machine, make sure that the borrower or
buyer gets the operator′s manual, so they will also know how
to properly maintain and use it.
More than 300 years of innovation
Husqvarna AB is a Swedish company based on a tradition
that dates back to 1689, when the Swedish King Charles XI
ordered the construction of a factory for production of
muskets. At that time, the foundation was already laid for the
engineering skills behind the development of some of the
world's leading products in areas such as hunting weapons,
bicycles, motorcycles, domestic appliances, sewing
machines and outdoor products.
Husqvarna is the global leader in outdoor power products for
forestry, park maintenance and lawn and garden care, as well
as cutting equipment and diamond tools for the construction
and stone industries.
User responsibility
It is the owner’s/employer’s responsibility that the operator
has sufficient knowledge about how to use the machine
safely. Supervisors and operators must have read and
understood the Operator’s Manual. They must be aware of:
• The machine’s safety instructions.
• The machine’s range of applications and limitations.
• How the machine is to be used and maintained.
National legislation could regulate the use of this machine.
Find out what legislation is applicable in the place where you
work before you start using the machine.
The manufacturer’s reservation
All information and all data in the Operator’s Manual were
applicable at the time the Operator’s Manual was sent to print.
Husqvarna AB has a policy of continuous product
development and therefore reserves the right to modify the
design and appearance of products without prior notice.
For customer assistance, contact us at our website:
www.usa.husqvarna.com
Features
Values such as high performance, reliability, innovative
technology, advanced technical solutions and environmental
considerations distinguish Husqvarna's products.
Some of the unique features of your product are described
below.
Active Air Filtration™
Centrifugal air cleaning for longer service life and longer
service intervals.
SmartCarb™
Built-in automatic filter compensation maintains high power
and reduces fuel consumption.
Dura Starter™
Dust sealed starter unit, where the return spring and the
pulley bearing are sealed which makes the starter virtually
maintenance free and even more reliable.
X-Torq®
The X-Torq® engine provides a more accessible torque for a
wider range of speeds which results in maximum cutting
capacity. X-Torq® reduces the fuel consumption with up to
20% and the emissions with up to 60%.
EasyStart
The engine and starter are designed to ensure quick and
easy starting of the machine. Reduces the pull resistance in
the starter cord with up to 40%. (Reduces the compression
during starting.)
Air purge
When you push the air purge diaphragm, fuel is pumped
through to the carburettor. Fewer pulls are required for
starting, meaning the machine becomes easier to start.
Efficient vibration damping system
Efficient vibration dampers spare arms and hands.
Reversible cutting head
The machine is fitted with a reversible cutting head allowing
cutting close to a wall or at ground level, restricted only by the
thickness of the blade guard.
Specially designed starter handle
Specially designed starter handle, with room for heavy
gloves.
Adjustable carry strap
Adjustable carry strap for full freedom of movement.
Chromium-plated blade guard
Chromium-plated blade guard, visible in smoke and water
spray, enhances control of the cutter.
English – 5
PRESENTATION
What is what on the power cutter - K 970 Rescue?
1 Front handle
2 Warning decal
3 Air filter cover
4 Cylinder cover
5 Choke
6 Throttle lockout
7 Throttle trigger
8 Air purge
9 Starter handle
10 Decompression valve
11 Starter
12 Muffler
13 Adjustment handle for guard
14 Blade guard
15 Type plate
16 Harness
17 Fuel cap
18 Belt guard
19 Cutting arm
20 Belt tensioner
21 Cutting head
22 Cutting blade
23 Combination spanner
24 Bushing + decal
25 Operator’s manual
6 – English
MACHINE´S SAFETY EQUIPMENT
General
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.
Throttle lockout
The throttle trigger lock is designed to prevent accidental
operation of the throttle. When the lock (A) is pressed in this
releases the throttle (B).
The trigger lock remains pressed in as long as the throttle is
pressed. When the grip on the handle is released the throttle
trigger and the throttle trigger lock both return to their original
positions. This is controlled by two independent return spring
systems. This means that the throttle trigger is automatically
locked in the idle position.
Checking the throttle lockout
• Make sure the throttle control is locked at the idle setting
when the throttle lockout is released.
• Press the throttle lockout and make sure it returns to its
original position when you release it.
• Check that the throttle trigger and throttle lockout move
freely and that the return springs work properly.
• Start the power cutter and apply full throttle. Release the
throttle control and check that the cutting blade stops and
remains stationary. If the cutting blade rotates when the
throttle is in the idle position you should check the
carburettor’s idle adjustment. See instructions in the
section "Maintenance".
Stop switch
Use the stop switch to switch off the engine.
Checking the stop switch
• Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
Blade guard
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 the blade guard
• Check that the guard over the cutting blade is not cracked
or damaged in any other way. Replace when damaged.
• Check that the cutting blade is fitted correctly and does
not show signs of damage. A damaged cutting blade can
cause personal injury.
!
WARNING! Never use a machine that has
faulty safety equipment! If your machine
fails any of these checks contact your
service agent to get it repaired.
The engine should be switched off, and the
stop switch in STOP position.
!
WARNING! Always check that the guard is
correctly fitted before starting the machine.
English – 7
MACHINE´S SAFETY EQUIPMENT
Vibration damping system
• Your machine is equipped with a vibration damping
system that is designed to reduce vibration and make
operation easier.
• The machine′s vibration damping system reduces the
transfer of vibration between the engine unit/cutting
equipment and the machine′s handle unit. The engine
body, including the cutting equipment, is insulated from
the handles by vibration damping units.
Checking the vibration damping system
• Check the vibration damping units regularly for cracks or
deformation. Replace them if damaged.
• Check that the vibration damping element is securely
attached between the engine unit and handle unit.
Muffler
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user.
Inspecting the muffler
Check regularly that the muffler is complete and secured
correctly.
!
WARNING! 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.
!
WARNING! The engine should be switched
off, and the stop switch in STOP position.
!
WARNING! Never use a machine without a
muffler, or with a faulty muffler. A damaged
muffler may substantially increase the noise
level and the fire hazard. Keep fire fighting
equipment handy.
The muffler gets very hot during and after
use. This also applies during idling. Be
aware of the fire hazard, especially when
working near flammable substances and/or
vapours.
8 – English
CUTTING BLADES
General
• Cutting blades are available in two basic designs;
abrasive baldes and diamond blades.
• 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.
• 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.
Suitable cutting blades
*Without water
**See instructions under the heading "Toothed blades,
carbide tipped blades and emergency situations".
Cutting blades for different materials
Follow the instructions supplied with the cutting blade
concerning the suitability of the blade for various applications,
or consult your dealer in case of doubts.
* CAUTION! Only specialty blades.
Hand-held, high-speed machines
• Our cutting blades are manufactured for high-speed,
portable power cutters.
• Check that the blade is approved for the same or higher
speed according to the aproval plate of the engine. Never
use a cutting blade with a lower speed rating than that of
the power cutter.
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.
Abrasive blades
• The cutting material on abrasive blades consists of grit
bonded using an organic binder. ”Reinforced blades” are
made up of a fabric or fibre 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.
• Ensure the blade it not cracked or damaged in any other
way.
!
WARNING! A cutting blade may burst and
cause injury to the operator.
Cutting blades K 970 Rescue
Abrasive blades Yes*
Diamond blades Ye s
Toothed blades Yes**
!
WARNING! Never use a cutting blade for any
other purpose than that it was intended for.
Cutting plastics with a diamond blade can
cause kickback when the material melts due
to the heat produced when cutting and
sticks to the blade. Never cut plastic
materials with a diamond blade!
Cutting in metal generates sparks that may
cause fire. Do not use the machine near to
ignitable substances or gases.
Concre
te
Metal
Plasti
c
Cast iron
Abrasive blades X X X X
Diamond blades X X* X*
!
WARNING! Never use a cutting blade at a
lower speed rating than that of the power
cutter. Only use cutting blades intended for
high speed handheld power cutters.
!
WARNING! Do not use abrasive blades with
water. The strength is impaired when
abrasive blades are exposed to water or
moisture, which results in an increased risk
of the blade breaking.
English – 9
CUTTING BLADES
• Test the abrasive blade by hanging it on your finger and
tapping it lightly with a screwdriver or the like. If the blade
does not produce a resonant, ringing sound it is damaged.
Abrasive blades for different materials
Diamond blades
General
• Diamond blades consist of a steel core 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.
Diamond blades for different materials
• Diamond blades are ideal for masonry, reinforced
concrete and other composite materials.
• Diamond blades are available in several hardness
classes.
• Special blades should be used when cutting metal. Ask
your dealer for help in choosing the right product.
Sharpening diamond blades
• Always use a sharp diamond blade.
• 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.
Diamond blades for dry cutting
• Diamond blades for dry cutting can be used both with and
without water cooling.
• When dry cutting, lift the blade out from the cut every 30–
60 seconds and let it rotate in the air for 10 seconds to let
it cool. If this is not done, the blade may be overheated.
Diamond blades for wet cutting
• Diamond blades for wet cutting must be water cooled. If
this is not done, the blade may be overheated.
• Water cooling cools the blade and increases its service
life while also reducing the formation of dust.
Toothed blades, carbide tipped
blades and emergency situations
Government regulation requires a different type of guarding
for carbide tipped blades not available on power cutters – a so
called 360 degree guard. Power Cutters (this saw) use
Abrasive or 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 OSHA 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 abrasive or 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 to for fire or rescue operations. A power cutter
equipped with carbide tipped blade should never be used to
cut wood in non-rescue operations.
Blade type Material
Concrete blade
Concrete, asphalt, stone masonry,
cast iron, aluminium, copper,
brass, cables, rubber, plastic, etc.
Metal blade
Steel, steel alloys and other hard
metals.
!
WARNING! Cutting plastics with a diamond
blade can cause kickback when the material
melts due to the heat produced when cutting
and sticks to the blade.
Diamond blades get very hot when used. An
overheated blade is a result of improper use,
and may cause deformation of the blade,
resulting in damage and injuries.
Cutting in metal generates sparks that may
cause fire. Do not use the machine near to
ignitable substances or gases.
10 – English
CUTTING BLADES
Transport and storage
• Do not store or transport the power cutter with the cutting
blade fitted. 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 blades. Abrasive
blades must be stored on a flat, level surface. If an
abrasive blades is stored in humid conditions, this can
cause imbalance and result in injury.
• Inspect new blades for transport or storage damage.
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