Husqvarna K950 User Manual

K950 CHAIN

Operator’s manual

Read these instructions carefully and
make sure you understand them
before using the machine.

SYMBOL EXPLANATION

Symbols on the cut-off saw:

WARNING! The cut-off saw can be
dangerous! Careless and incorrect use can
result in serious or fatal injury to the
operator or others.

Please read the instructions carefully and
make sure you understand them before
using the cut-off saw.

Always wear:

• Approved protective helmet

• Approved hearing protection

• Protective glasses or visor

This product is in accordance with
applicable CE directives.

Warning

Cutting creates a lots of dust which can
cause inhalation damages. Use appropriate
dust mask or respirator protection. Avoid
breathing petrol fumes and exhaust gases.
Provide for good ventilation.

Symbols in the Operator's Manual:

Switch off the engine by moving the stop
switch to the STOP position before
carrying out any checks or maintenance.

Always wear approved protective gloves.

Regular cleaning is required.

Visual check.

Warning

Sparks from the cut-off saw can cause fire
in combustible materials such as: petrol
(gas), wood, dry grass etc.

Noise emission to the environment
according to the European Community’s
Directive. The machine’s emission is
specified in chapter Technical data and on
label.

Protective glasses or a visor must be
worn.

Run position.

Stop with spring loaded return to Run
position.

Stop, in fixed position.

2 – English

CONTENTS

Before using your new cut-off saw:

• Read the Operator’s Manual carefully.

• Check the assembly and adjustment of the cutting chain, see
chapter ”

• Start the engine and check the carburetor settings. See

chapter ”
correctly the cutting chain should not rotate when idling.
Setting the idling speed is described in the Operator’s
Manual. Adjust the speed according to these instructions. Do
not use the cut-off saw if the idling speed is not correctly
adjusted!

• Let your Partner dealer check the cut-off saw and carry out
essential adjustments and repairs.

!

!

Assembly

Maintenance

WARNING!
Under no circumstances should you modify
the original design of the cut-off saw without
approval from the manufacturer. Always use
genuine spare parts. Unauthorized
modifications or accessories may lead to
serious injury or death.

Your warranty does not cover damage or
liability caused by the use of non-authorized
accessories or replacement parts.

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.

”.

”, section ”

Carburetor

”. When adjusted

List of Contents

Symbol explanation ..................................................... 2

Safety instructions

Personal protective equipment ....................................... 4

The machine’s safety equipment............................. 4

Control, maintenance and service of the machine’s safety

equipment ............................................................................ 4

General safety instructions .............................................. 6

Storage ................................................................................ 6

Fuel safety ........................................................................... 7

General working instructions........................................... 7

Using ................................................................................... 8

Cutting ................................................................................. 8

Kickback ............................................................................ 10

Care and storage ............................................................... 10

Cutting equipment ............................................................ 11

Cutting chains .................................................................... 11

What is what?

What is what on the machine? .......................................... 12

Assembly

How to tension the chain ................................................... 13

How to change the chain and rim ...................................... 13

How to change the clamping force of the bar .................... 14

Fuel handling

Fuel mixture ....................................................................... 15

Fuelling .............................................................................. 15

Start and stop

Start and stop .................................................................... 16

Maintenance

Carburetor ......................................................................... 17

Fuel filter ............................................................................ 18

Air filter .............................................................................. 18

Starter ................................................................................ 19

Ignition system .................................................................. 20

Spark plug ......................................................................... 20

Cooling system .................................................................. 20

Muffler ............................................................................... 20

Daily maintenance ............................................................. 21

Weekly maintenance ......................................................... 21

Monthly maintenance ........................................................ 21

Technical Data

K950 Chain ........................................................................ 22

English – 3

SAFETY INSTRUCTIONS

WARNING! Incorrect or careless use of a

!

cut-off saw can turn it into a dangerous tool
that can cause serious or even fatal injury.
It is extremely important that you read and
understand this manual.

PERSONAL PROTECTIVE EQUIPMENT

WARNING! When using a cut-off saw,
approved protective equipment must be used.

!

• PROTECTIVE HELMET

• EAR PROTECTION

• PROTECTIVE GLASSES
OR FULL FACE
PROTECTION

• BREATHING MASK

Personal protective equipment does not
eliminate the risk of accidents, however, it can
reduce the effects of an injury in the event of
an accident. Ask your dealer for help when
choosing protective equipment.

THE MACHINE’S SAFETY
EQUIPMENT

This section describes the cut-off saw’s safety equipment, its
function and how checks and maintenance are carried out to
ensure that it operates correctly.

WARNING! Never use a cut-off saw with

!

1 Anti-vibration
system

Your cut-off saw is equipped
with an anti-vibration system.
This is designed to give as low
vibration levels and
comfortable usage as possible.

defective safety equipment. Follow the
control, maintenance and service instructions
described in this manual.

• HEAVY-DUTY, FIRM GRIP
PROTECTIVE GLOVES

• SNUG-FITTING, HEAVY­DUTY, COMFORTABLE
CLOTHING THAT ALLOWS
FULL FREEDOM OF
MOVEMENT

• LEG PROTECTION (TO
PROTECT AGAINST
SPARKS AND CUTTING
FRAGMENTS)

• ANTI-SLIP BOOTS WITH
STEEL TOE CAPS

The cut-off saw’s antivibration
system reduces the transfer of
vibration between the engine/
cutting equipment and the
operator. The engine body
including the cutting equipment
is suspended in
a handle system via anti­vibration elements.

2 Stop switch

The stop switch should be
used to stop the engine.

• FIRST AID KIT SHOULD
ALWAYS BE ON HAND

4 – English

SAFETY INSTRUCTIONS

3 Muffler

WARNING! During use and for some time

!

The muffler is designed to
give the lowest possible noise
level and to direct the engine‘s
exhaust fumes away from the
user. The engine‘s exhaust
fumes are hot and can contain
sparks, which can lead to the
outbreak of fire.

IMPORTANT INFORMATION! It is extremely important that
the instructions for checking, maintaining and servicing
the muffler are followed. (see the section

maintenance and service of the machine’s safety
equipment“

after the muffler is very hot. Do not touch the
muffler if it is hot!

“Control,

).

Control, maintenance and service of
the machine‘s safety equipment

WARNING! All service and repairs to the cut­off saw require special training. This applies

!

1 Anti-vibration system

Check the anti-vibration
elements regularly for material
cracks and deformation.

especially to the cut-off saw’s safety
equipment. If the cut-off saw does not meet
any of the controls listed below you should
contact your service workshop.
The purchase of one of our products
guarantees that professional repair and
servicing will be carried out on it. If the point
of purchase is not one of our servicing
dealers, please ask for details of the closest
service workshop.

WARNING! The inside of muffler contain

!

chemicals that may be carcenogenic. Avoid
contact with these elements in the event om
damaged muffler.

4 Throttle lock

The throttle lock is designed
to prevent accidental opera­tion of the throttle control.
When you press the lock (A)
(i.e. when you grasp the
handle) it releases the throttle
trigger (B).
When you release the handle
the throttle trigger and the
throttle lock both move back
to their original positions. This
movement is controlled by two
independent return springs.
This arrangement means that
the throttle control is
automatically locked at the
idle setting when you release
the handle.

A

B

Check that the anti-vibration
elements are securely
mounted between the engine
unit and the handle system.

2 Stop switch

Start the engine and make
sure that the engine stops
when the stop switch is
moved to the stop position.

English – 5

SAFETY INSTRUCTIONS

3 Muffler

Never use a machine that
has a defective muffler.

Check regularly that the
muffler is secured to the
engine body.

4 Throttle lock

1 Make sure the throttle

control is locked at the
idle setting when you
release the throttle lock.

GENERAL SAFETY INSTRUCTIONS

IMPORTANT INFORMATION!
Do not use the cut-off saw 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 machine’s

”

safety equipment”

service specialists.

• Use the equipment recommended in the chapter

protective equipment”.

• Never use the machine when you are tired, under the
influence of medicines/drugs or alcohol.

• Do not lend the cut-off saw to anyone without providing this
Operator’s Manual. Ensure the person using the cut-off saw
understands the information in this Operator’s Manual.

, should be carried out by trained

”Personal

Storage

• Store the cut-off saw under lock and key so that it’s out of
reach for children and unauthorised persons.

2 Press the throttle lock and

make sure it returns to its
original position when you
release it.

3 Check that the throttle

control and throttle lock
move freely and that the
return springs work
properly.

4 Start the saw and apply

full throttle. Release the
throttle control and check
that the chain stops and
remains stationary. If the
chain rotates when the
throttle is on idle setting
you should check the
carburettor idle
adjustment. See the
section on

”Maintenance”

.

!

6 – English

WARNING! Never use a cut-off saw with
defective safety equipment. The cut-off saw’s
safety equipment should be checked and
maintained as described in this Operator’s
Manual. If your cut-off saw does not meet any
of these controls you should contact your
service workshop.

SAFETY INSTRUCTIONS

Fuel safety

(Filling/Fuel mixture/Storage)

WARNING! Exercise great care when handling

!

• Never fill the machine while
the engine is running.

• Provide good ventilation
when filling or mixing fuel
(gasoline and 2-stroke oil).

• Move the machine at least 3
m from the filling position
before starting.

• Never start the machine:

• Store the cut-off saw and fuel so that any leakage or fumes

do not risk coming into contact with sparks or naked flames.
For example, electric machines, electric motors, electrical
switches/power switches, heaters or the like.

• When storing fuel, approved containers intended for this
purpose must be used.

• When storing the cut-off saw for long periods the fuel tank
must be emptied. Contact your local fuel station to find out
how to dispose of excess fuel.

• Use a Partner fuel can with an anti-spill device.

!

fuel. Bear in mind the risk of fire, explosions
and inhaling fumes.

Min 3 m

(10ft)

a) If you have spilt fuel
on it. Wipe up all
spillage.

b) If you have spilt fuel
on yourself or your
clothes. Change your
clothes.

c) If there is a fuel leak.
Make regular checks for
leakage from the fuel
cap and the fuel supply
pipes.

WARNING! Use a Partner fuel can with an
anti-spill device. Fuel and fuel fumes are
highly flammable. Think of the risks of fire,
explosion and breathing in fumes. Stop the
engine before refuelling. Do not overfill with
fuel. Mop up any spills on the ground or the
machine. If you spill fuel on yourself or your
clothes, change your clothes. Move the
machine at least 3 metres from the refuelling
site before starting.

GENERAL WORKING INSTRUCTIONS

This section takes up the basic safety precautions for working
with the cut-off saw. Follow these general working instructions,
but never use a machine without the possibility of calling for
help in the event of an accident.

Basic safety precautions

IMPORTANT INFORMATION! Never work with a cut-off
saw that is defective or incorrectly adjusted. Do not
work with a cut-off saw that is incomplete or where
assembly has not been carried out in a satisfactory
manner. Check that the cutting chain stops rotating
when the throttle is released. If you encounter a
situation where you are uncertain how to proceed you
should ask an expert.
Avoid all usage which you consider to be beyond your
capability.

• Check that no one is in the immediate vicinity when the
machine is started or while working with the machine to
ensure that people, animals or other things cannot affect your
control of the cut-off saw.

• Avoid usage in unfavourable weather conditions, for example,
thick fog, heavy rain, strong winds or extreme cold, etc. To
work in bad weather conditions is tiring and can create
dangerous circumstances, e.g. slippery surfaces.

• Never start to work with the cut-off saw 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 clothing and parts of the body do not come into
contact with the cutting chain when the engine is started.

• Maintain a safe distance from the cutting chain when the
engine is running.

• Ensure that the working area is sufficiently illuminated to
create a safe working environment.

• Check the cutting area for buried cables and wires.

• Consider the carbon monoxide risk! The diamond chain saw

emits highly dangerous carbon monoxide and as a result must
never be used in unventilated areas. Even used in deep
recesses it represents a risk if badly ventilated. Carbon
monoxide is heavier than air and collects at the bottom of
recesses.

Only use the machine in areas with good
ventilation. Neglect can result in serious

!

injury or death.

English – 7

SAFETY INSTRUCTIONS

Using

WARNING!
Never start the saw without the complete bar

!

Wet cutting

The diamond chain saw must always be run with water cooling.
Dry cutting causes immediate overheating and bar and chain
failure with a risk of personal injury. In addition to cooling the
bar and chain, the flow of water pushes particles away from the
bar and the drive links. As a result it is important with a high
water pressure. The water pressure should be at least 2.5 bar
and a maximum of 11 bar. The recommended pressure is
approx. 5 bar.

Working speed

Under normal conditions the machine should run at full throttle.
The feed pressure is adjusted so that the speed drops to
approx. 20–30 % under maximum speed; this gives the best
cutting efficiency and economy.

and chain fitted.

Cutting

WARNING! A safe distance from the cut-off

!

• Start cutting with the engine at full throttle.

• Always hold the cut-off saw firmly, with both hands.

Hold the machine so that the thumb and fingers grip
around the handle.

!

saw is 15 metres. You are responsible that
animals and onlookers are not in the working
area. Do not start to work with the cut-off saw
before the working area is clear and you
have a firm foothold.

Over exposure to vibrations can result in
blood-vessel or nerve injury to persons
suffering with blood circulation problems.
Seek medical attention if you experience
physical symptoms that can be related to over
exposure to vibrations. Examples of such
symptoms are numbness, lack of feeling,
“tickling“, “pricking“, pain lack of or a
reduction in normal strength, changes in the
colour of the skin or its surfaces. These
symptoms normally appear in the fingers,
hands or wrists.

Cutting technique

The technique described be­low is of a general character.

1.Support the work piece
in such a way that you
can predict what will
happen and so it will not
pinch.

2.Always cut at full throttle.

3.Start cutting gently, do
not force or squeeze the
chain in.

4.Use a high chain speed.

5. Move the chain slowly
backwards and forwards.

8 – English

!

!

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

WARNING!
Do not lean the saw to the side, this can
cause the chain to jam or break with personal
injury as a consequence.