Husqvarna K760 User Manual
Operator ′ s manual
K760
K760 Rescue
Please read the operator’s manual carefully and make sure you understand the instructions
before using the machine.
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!
!
KEY TO SYMBOLS
Manual version
This manual is the International version used for all
English speaking countries outside North America. If you
operate in North America use the US-version.
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 ”Personal
protective equipment” heading.
This product is in accordance with
applicable EC directives.
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,
clothes, dry grass etc.
Ensure the blades are not cracked or
damaged in any other way.
Air purge
Decompression valve
Refuelling, petrol/oil mix
Noise emission to the environment
according to the European Community’s
Directive. The machine’s emission is
specified in the Technical data chapter
and on the label.
You will find the following label on your
power cutter:
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!
WARNING! Indicates a hazardous
situation which, if not avoided, will result
in death or serious injury.
CAUTION!
CAUTION! Indicates a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
NOTICE!
NOTICE! Is used to address practices not related to
personal injury.
Do not use circular saw blades
Choke.
2 – English
CONTENTS
Contents
KEY TO SYMBOLS
Manual version ..................................................... 2
Symbols on the machine ...................................... 2
Explanation of warning levels ............................... 2
CONTENTS
Contents ............................................................... 3
PRESENTATION
Dear Customer, .................................................... 4
Design and features ............................................. 4
PRESENTATION
What is what on the power cutter - K760? ........... 5
PRESENTATION
What is what on the power cutter - K760 Rescue? 6
MACHINE´S SAFETY EQUIPMENT
General ................................................................. 7
CUTTING BLADES
General ................................................................. 9
Abrasive blades .................................................... 10
Diamond blades ................................................... 10
Toothed blades, carbide tipped blades and
emergency situations ........................................... 11
Transport and storage .......................................... 11
ASSEMBLING AND ADJUSTMENTS
General ................................................................. 12
Checking the drive shaft and flange washers ....... 12
Checking the bushing ........................................... 12
Checking the direction of the blade rotation ......... 12
Fitting the cutting blade ........................................ 12
Blade guard .......................................................... 12
Disengaging OilGuard .......................................... 13
Reversible cutting head ........................................ 13
FUEL HANDLING
General ................................................................. 14
Fuel ...................................................................... 14
Fueling .................................................................. 15
Transport and storage .......................................... 15
OilGuard ............................................................... 15
OPERATING
Protective equipment ............................................ 16
General safety precautions ................................... 16
Transport and storage .......................................... 21
STARTING AND STOPPING
Before starting ...................................................... 22
Starting ................................................................. 22
Stopping ............................................................... 23
MAINTENANCE
General ................................................................. 24
Maintenance schedule ......................................... 24
Cleaning ................................................................ 25
Functional inspection ............................................ 25
TECHNICAL DATA
Technical data ....................................................... 29
Cutting equipment ................................................. 29
EC-declaration of conformity ................................ 30
English
3
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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 will sell this machine, make sure that the
buyer will get the operator´s manual.
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.
Owner 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
Subsequent to publishing this manual Husqvarna may
issue additional information for safe operation of this
product. It is the owner’s duty to keep up with the safest
methods of operation.
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 information and assistance, contact us at
our website: www.husqvarnacp.com
4 – English
Design and features
This is a high speed, hand held, power cutter designed to
cut hard materials like masonry or steel and should not be
used for any purpose not described in this manual. Safe
operation of this product requires the operator to read this
manual carefully. Ask your dealer or Husqvarna should
you need more information.
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.
OilGuard (K760 OilGuard)
An optical detection system to detect if there is oil in the
fuel or if the oil type is wrong.
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
by up to 20% and the emissions by 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 by 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.
DEX
Low flushing wet cutting kit for effective dust handling.
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
(K760 Rescue)
Specially designed starter handle, with room for heavy
gloves.
Adjustable carry strap (K760 Rescue)
Adjustable carry strap for full freedom of movement.
Chromium-plated blade guard
(K760 Rescue)
Chromium-plated blade guard, visible in smoke and water
spray, enhances control of the cutter.
PRESENTATION
What is what on the power cutter - K760?
1 Front handle
2 Water tap
3 Warning decal
4 Air filter cover
5 Cylinder cover
6 Choke control with start throttle lock
7 Throttle lockout
8 Throttle trigger
9 Stop switch
10 Disconnection function for OilGuard (K760 OilGuard)
11 Starter handle
12 Starter
13 Muffler
14 Adjustment handle for guard
15 Blade guard
16 Decompression valve
17 Air purge
18 Fuel cap
19 Water connection with filter
20 Belt guard
21 Cutting arm
22 Rating plate
23 Belt tensioner
24 Cutting head
25 Cutting blade (not supplied)
26 Combination spanner
27 Water connector, GARDENA
28 Operator ′ s manual
®
English – 5
PRESENTATION
What is what on the power cutter - K760 Rescue?
1 Front handle
2 Warning decal
3 Air filter cover
4 Cylinder cover
5 Choke control with start throttle lock
6 Throttle lockout
7 Throttle trigger
8 Stop switch
9 Starter handle
10 Starter
11 Muffler
12 Adjustment handle for guard
13 Blade guard
6 – English
14 Decompression valve
15 Air purge
16 Fuel cap
17 Harness
18 Belt guard
19 Cutting arm
20 Rating plate
21 Belt tensioner
22 Cutting head
23 Cutting blade (not supplied)
24 Combination spanner
25 Operator ′ s manual
MACHINE´S SAFETY EQUIPMENT
General
WARNING! Never use a machine that has
faulty safety equipment! If your machine
!
fails any checks contact your service
agent to get it repaired.
The engine should be switched off, and
the stop switch in STOP position.
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.
• 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.
• Press the throttle lockout and make sure it returns to
its original position when you release it.
English
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MACHINE´S SAFETY EQUIPMENT
!
!
Blade guard
WARNING! Always check that the guard
is correctly fitted before starting the
!
machine.
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 and 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.
Vibration damping system
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.
• Your machine is equipped with a vibration damping
system that is designed to minimize 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
WARNING! The engine should be
switched off, and the stop switch in
STOP position.
• 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
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 as well as when idling. Be
aware of the fire hazard, especially when
working near flammable substances and/
or vapours.
Keep fire fighting equipment handy.
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.
8 – English
General
!
!
CUTTING BLADES
Cutting blades for different materials
WARNING! A cutting blade may burst
and cause injury to the operator.
!
The cutting blade manufacturer issues
warnings and recommendations for the
use and proper care of the cutting blade.
Those warnings come with the cutting
blade. Read and follow all instructions
from the cutting blade manufacturer.
A cutting blade should be checked
before it is assembled on the saw and
frequently during use. Look for cracks,
lost segments (diamond blades) or
pieces broken off. Do not use a damaged
cutting blade.
Test the integrity of each new cutting
blade by running it at full throttle for
about 1 minute.
• Cutting blades are available in two basic designs;
abrasive blades 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 Fitting the cutting blade.
Suitable cutting blades
Cutting blades K760 K760 Rescue
Abrasive blades Yes* Yes*
Diamond blades Yes Yes
Toothed blads Do not use Yes**
For more information, see the ”Technical data” section.
*Without water
**See instructions under the heading "Toothed blades,
carbide tipped blades and emergency situations".
WARNING! Never use a cutting blade for
any other materials than what it was
intended to cut.
Never use a diamond blade to cut plastic
material. The heat produced during cutting
may melt the plastic and it can stick to the
cutting blade and cause a kickback.
Cutting metal generates sparks that may
cause fire. Do not use the machine near
ignitable substances or gases.
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.
Concrete Metal Plastic Cast iron
Abrasive
blades
Diamon
d blades
* Only specialty blades.
XXXX
XX* X*
Hand held, high speed machines
WARNING! Never use a cutting blade with a
lower speed rating than that of the power
cutter. Only use cutting blades intended for
high speed handheld power cutters.
• Many cutting blades that might fit this power cutter are
intended for stationary saws and have a lower speed
rating than is needed for this hand-held saw. Cutting
blades with a lower speed rating shall never be used
on this saw.
• Husqvarna cutting blades are manufactured for highspeed, 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.
English
9
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CUTTING BLADES
!
Abrasive blades
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.
• 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 cutting blade is not cracked or damaged.
• 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.
Diamond blades
General
WARNING! Never use a diamond blade to
cut plastic material. The heat produced
during cutting may melt the plastic and it
can stick to the cutting blade and cause a
kickback.
Diamond blades become 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 metal generates sparks that may
cause fire. Do not use the machine near
ignitable substances or gases.
• 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.
Abrasive blades for different materials
Blade type Material
Concrete blade
Metal blade
10 – English
Concrete, asphalt, stone masonry,
cast iron, aluminium, copper, brass,
cables, rubber, plastic, etc.
Steel, steel alloys and other hard
metals.
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.
CUTTING BLADES
Diamond blades and cooling
• During cutting the friction in the cut causes the
diamond blade to be heated up. If the blade is allowed
to get too hot this can result in loss of blade tensioning
or core cracking.
Diamond blades for dry cutting
• Although no water is required for cooling, dry cutting
blades must be cooled with air flow around the blades.
For this reason dry cutting blades are recommended
only for intermittent cutting. Every few seconds of
cutting the blade should be allowed to run 'free” with
no load to allow the air flow around the blade to
dissipate the heat.
Diamond blades for wet cutting
• Wet cutting diamond blades must be used with water
to keep the blade core and segments cool during
sawing.
• Wet cutting blades should NOT be used dry.
• Using wet cutting blades without water can cause
excessive heat build-up, resulting in poor
performance, severe blade damage and is a safety
hazard.
• 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
Carbide tipped specialty blades are intended only for use
in rescue missions and only by trained staff.
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.
English – 11
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