Husqvarna 143R Ii Users Manual OM, 143 R II, 2008 06

143R-II to the manual a38c7f3d-9501-4cb6-a947-db191146ed51

2015-01-24

: Husqvarna Husqvarna-143R-Ii-Users-Manual-316755 husqvarna-143r-ii-users-manual-316755 husqvarna pdf

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Page Count: 36

KEY
T
O SYMBOLS
2
–
English
Symbols
W
ARNING! A clearing saw,
brushcutter or trimmer can be
dangerous if used incorrectly or
carelessly, and can cause serious or
fatal injury to the operator or others.
It is extremely important that you
read and understand the contents of
this operator’s manual.
Please read the operator’s manual
carefully and make sure you
understand the instructions before
using the machine.
Always wear:
• A protective helmet where there
is a risk of falling objects
• Approved hearing protection
• Approved eye protection
Max. speed of output shaft, rpm
This product is in accordance with
applicable EC directives.
Watch out for thrown objects and
ricochets.
The operator of the machine must
ensure, while working, that no
persons or animals come closer than
15 metres.
Machines fitted with saw blades or
grass blades can be thrown violently
to the side when the blade comes
into contact with a fixed object. This is
called blade thrust. The blade is
capable of amputating an arm or leg.
Always keep people and animals at least 15 metres from
the machine.
Arrows which show limits for handle
positioning.
Always wear approved protective
gloves.
Wear sturdy, non-slip boots.
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.
Other symbols/decals on the mac
hine refer to special
certification requirements for certain markets.
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.
Approved eye protection must always
be used.
50FT
15 m
50FT
15 m
CONTENTS
English
–
3
Contents
Note the f
ollowing before
starting:
Please read the oper
ator’s manual carefully.
KEY
TO SYMBOLS
Symbols
................................................................ 2
CONTENTS
Contents
............................................................... 3
Note the following before starting: ........................ 3
INTR
ODUCTION
Dear Customer
, .................................................... 4
WHA
T IS WHAT?
What is what on the br
ushcutter? ......................... 5
GENERAL SAFETY PRECA
UTIONS
Impor
tant .............................................................. 6
Personal protective equipment ............................. 6
Machine
′
s safety equipment ................................. 7
Cutting equipment ................................................ 10
ASSEMBL
Y
Fitting the main body
............................................ 12
Assembling the handlebar and throttle ................. 12
Connecting throttle cable and stop switch wires ... 12
Fitting blades and trimmer heads ......................... 13
Fitting the transport guard .................................... 15
Adjusting the harness and clearing saw ............... 15
Standard harness ................................................. 15
FUEL HANDLING
Fuel saf
ety ............................................................ 16
Fuel ...................................................................... 16
Fuelling ................................................................. 17
ST
ARTING AND STOPPING
Chec
k before starting ........................................... 18
Starting and stopping ........................................... 18
W
ORKING TECHNIQUES
Gener
al working instructions ................................ 20
MAINTENANCE
Carb
urettor ........................................................... 23
Muffler .................................................................. 23
Cooling system ..................................................... 23
Air filter ................................................................. 24
Fuel filter ............................................................... 24
Bevel gear ............................................................ 24
Spark plug ............................................................ 24
Maintenance schedule ......................................... 25
TECHNICAL D
ATA
T
echnical data ...................................................... 26
EC-declaration of conformity ................................ 27
!
W
ARNING! Long-term exposure to noise
can result in permanent hearing
impairment. So always use approved
hearing protection.
!
W
ARNING! 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.
!
W
ARNING! A clearing saw, brushcutter
or trimmer can be dangerous if used
incorrectly or carelessly, and can cause
serious or fatal injury to the operator or
others. It is extremely important that you
read and understand the contents of this
operator’s manual.
4
–
English
INTR
ODUCTION
Dear Customer
,
Cong
ratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689,
when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production
of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-
powered plant. During the more than 300 years of beeing, the Husqvarna factory has produced a lot of different products,
from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor
driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our
highest priority. The business concept is to develop, manufacture and market motor driven products for forestry and
gardening as well as for building and construction industry. Husqvarna
′
s aim is also to be in the front edge according to
ergonomics, usability, security and environmental protection. That is the reason why we have developed many different
features to provide our products within these areas.
We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very
long time to come. The purchase of one of our products gives you access to professional help with repairs and service
whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the
address of your nearest service workshop.
It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this
operator
′
s manual as a valuable document. 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.
Thank you for using a Husqvarna product.
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.
English
–
5
WHA
T IS
WHA
T?
What is what on the brushcutter?
24
1
21
4
9
7
10
8
22
11
17 15
13
14
12
16
6
4
1
5
30
3
29
25
26
27
28
23
31
32
18
19
20
2
1
Blade (Not all markets)
2 2-teeth blade (Not all markets)
3 Grease filler cap, bevel gear
4 Bevel gear
5 Cutting attachment guard
6 Shaft
7 Start throttle / Stop switch
8 Throttle control
9 Throttle lockout
10 Suspension ring
11 Cylinder cover
12 Starter handle
13 Fuel tank
14 Choke control
15 Air filter cover
16 Handlebar
17 Clutch cover
18 Locking nut
19 Support flange
20 Support cup
21 Drive disc
22 Handlebar clamp
23 Operator
′
s manual
24 Transport guard
25 Socket spanner
26 Spanner
27 Locking pin
28 Harness
29 Air purge
30 Guard extension
31 Trimmer head (Not all markets)
32 Allen key
GENERAL SAFETY PRECA
UTIONS
6
–
English
Impor
tant Personal protective equipment
HELMET
A protectiv
e helmet where there is a risk of falling objects
HEARING PROTECTION
Wear hearing protection that provides adequate noise
reduction.
EYE PROTECTION
Always wear approved eye protection. If you use a visor
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.
GLOVES
Gloves should be worn when necessary, e.g., when fitting
cutting attachments.
IMPORTANT!
The machine is only designed for trimming grass.
The only accessories you can operate with this engine
unit are the cutting attachments we recommend in the
chapter on Technical data.
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.
All covers, guards and handles must be fitted before
starting. Ensure that the spark plug cap and ignition
lead are undamaged to avoid the risk of electric shock.
The machine operator must ensure that no people or
animals come closer than 15 metres while working.
When several operators are working in the same area
the safety distance should be at least twice the tree
height and no less than 15 metres.
!
W
ARNING! The ignition system of this
machine produces an electromagnetic
field during operation. This field may
under some circumstances interfere with
pacemakers. To reduce the risk of
serious or fatal injury, we recommend
persons with pacemakers to consult
their physician and the pacemaker
manufacturer before operating this
machine.
!
W
ARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
IMPOR
TANT!
A clearing saw, brushcutter or trimmer can be
dangerous if used incorrectly or carelessly, and can
cause serious or fatal injury to the operator or others. It
is extremely important that you read and understand the
contents of this operator’s manual.
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.
!
W
ARNING! Listen out for warning signals
or shouts when you are wearing hearing
protection. Always remove your hearing
protection as soon as the engine stops.
GENERAL SAFETY PRECA
UTIONS
English
–
7
BOO
TS
Wear boots with steel toe-caps and non-slip sole.
CLOTHING
Wear clothes made of a strong fabric and avoid loose
clothing that can catch on twigs and branches. Always
wear heavy, long pants. Do not wear jewellery, shorts
sandals or go barefoot. Secure hair so it is above shoulder
level.
FIRST AID KIT
Always have a first aid kit nearby.
Mac
hine
′
s safety equipment
This section descr
ibes 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.
The life span of the machine can be reduced and the risk
of accidents can increase if machine maintenance is not
carried out correctly and if service and/or repairs are not
carried out professionally. If you need further information
please contact your nearest service workshop.
Thr
ottle lockout
The throttle loc
kout 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
control (B). When you release the handle the throttle
control and the throttle lockout 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.
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 control and throttle lockout move
freely and that the return springs work properly.
See instructions under the heading Start. Start the
machine and apply full throttle. Release the throttle and
check that the cutting attachment stops and remains at a
standstill. If the cutting attachment rotates with the throttle
in the idle position then the carburettor idle setting must
IMPORTANT! 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.
!
W
ARNING! Never use a machine with
faulty safety equipment. The machine’s
safety equipment must be checked and
maintained as described in this section.
If your machine fails any of these checks
contact your service agent to get it
repaired.
GENERAL SAFETY PRECA
UTIONS
8
–
English
be chec
ked. See instructions under the heading
Maintenance.
Stop s
witch
Use the stop s
witch to switch off the engine.
(A) Stop
(B) Start
(C) Stop switch
Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
Cutting attac
hment guard
This guard is intended to pre
vent loose objects from being
thrown towards the operator. The guard also protects the
operator from accidental contact with the cutting
attachment.
Check that the guard is undamaged and not cracked.
Replace the guard if it has been exposed to impact or is
cracked.
Always use the recommended guard for the cutting
attachment you are using. See chapter on Technical data.
Vibration damping system
Y
our machine is equipped with a vibration damping
system that is designed to minimize vibration and make
operation easier.
Using incorrectly wound cord or a blunt or incorrect
cutting attachment (wrong type or incorrectly filed, see
instructions under the heading Filing the blade) increases
the level of vibration.
The machine
′
s vibration damping system reduces the
transfer of vibration between the engine unit/cutting
equipment and the machine
′
s handle unit.
Regularly check the vibration damping units for cracks or
deformation.
Check that the vibration damping element is undamaged
and securely attached.
!
WARNING! Never use a cutting
attachment without an approved guard.
See the chapter on Technical data. If an
incorrect or faulty guard is fitted this can
cause serious personal injury.
!
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. The risk
increases at low temperatures.
GENERAL SAFETY PRECAUTIONS
English – 9
Quick release
There is an easily accessible, quick release fitted at the
front as a safety precaution in case the engine catches
fire, or in any other situation that requires you to free
yourself from the machine and harness. See instructions
under the heading Adjusting the harness and clearing
saw.
Check that the harness straps are correctly positioned.
Once the harness and machine have been adjusted,
check that the harness quick release works correctly.
Muffler
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user.
For mufflers it is very important that you follow the
instructions on checking, maintaining and servicing your
machine.
Never use a machine that has a faulty muffler.
Regularly check that the muffler is securely attached to
the machine.
Locking nut
A locking nut is used to secure some types of cutting
attachment.
When fitting, tighten the nut in the opposite direction to the
direction of rotation of the cutting attachment. To remove
it, undo the nut in the same direction as the cutting
attachment rotates. (CAUTION! The nut has a left-hand
thread.) Tighten the nut using the socket spanner.
The nylon lining inside the locking nut must not be so worn
that you can turn it by hand. The lining should offer a
resistance of at least 1.5 Nm. The nut should be replaced
after it has been put on approx. 10 times.
!
WARNING! The inside of the muffler
contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
!
WARNING! Bear in mind that: The
exhaust fumes from the engine are hot
and may contain sparks which can start
a fire. Never start the machine indoors or
near combustible material!
GENERAL SAFETY PRECAUTIONS
10 – English
Cutting equipment
This section describes how to choose and maintain your
cutting equipment in order to:
• Reduce the risk of blade thrust.
• Obtain maximum cutting performance.
• Extend the life of cutting equipment.
Cutting equipment
Grass blades and grass cutters are intended for cutting
coarse grass.
A trimmer head is intended for trimming grass.
General rules
Only use cutting attachments with the guards we
recommend! See the chapter on Technical data.
Keep the teeth of the blade correctly sharpened! Follow
our instructions and use the recommended file gauge. An
incorrectly sharpened or damaged blade increases the
risk of accidents.
Check the cutting attachment for damage or cracks. A
damaged cutting attachment should always be replaced.
Sharpening grass cutters and grass
blades
• See the cutting attachment packaging for correct
sharpening instructions. Sharpen blades and cutters
using a single-cut flat file.
• Sharpen all edges equally to maintain the balance of
the blade.
IMPORTANT!
Only use cutting attachments with the guards we
recommend! See the chapter on Technical data.
Refer to the instructions for the cutting attachment to
check the correct way to load the cord and the correct
cord diameter.
Keep the teeth of the blade correctly sharpened! Follow
our recommendations. Also refer to the instructions on
the blade packaging.
!
WARNING! Always stop the engine
before doing any work on the cutting
attachment. This continues to rotate even
after the throttle has been released.
Ensure that the cutting attachment has
stopped completely and disconnect the
HT lead from the spark plug before you
start to work on it.
!
WARNING! Using an incorrect cutting
attachment or an incorrectly sharpened
blade increases the risk of blade thrust.
!
WARNING! Always discard a blade that is
bent, twisted, cracked, broken or
damaged in any other way. Never attempt
to straighten a twisted blade so that it
can be reused. Only use original blades
of the specified type.
GENERAL SAFETY PRECAUTIONS
English – 11
Trimmer head
• Only use the recommended trimmer heads and
trimmer cords. These have been tested by the
manufacturer to suit a particular engine size. This is
especially important when a fully automatic trimmer
head is used. Only use the recommended cutting
attachment. See the chapter on Technical data.
• Smaller machines generally require small trimmer
heads and vice versa. This is because when clearing
using a cord the engine must throw out the cord
radially from the trimmer head and overcome the
resistance of the grass being cleared.
• The length of the cord is also important. A longer cord
requires greater engine power than a shorter cord of
the same diameter.
• Make sure that the cutter on the trimmer guard is
intact. This is used to cut the cord to the correct length.
• To increase the life of the cord it can be soaked in
water for a couple of days. This will make the line
tougher so that it lasts longer.
IMPORTANT!
Always ensure the trimmer cord is wound tightly and
evenly around the drum, otherwise the machine will
generate harmful vibration.
ASSEMBLY
12 – English
Fitting the main body
Connect the engine (A) to the tube (B) with four screws
(C).
Assembling the handlebar and
throttle
•Fit the handlebar in the handlebar clamp on the shaft
using four screws.
• Attach the cabling to the shaft with two cabling
holders.
Make sure that the suspension ring and the handlebar
clamp are located in the area indicated by the arrow
labels. If they are moved outside of this area, it can cause
the machine to be imbalanced, which can be dangerous.
(A) Arrow labels
Connecting throttle cable and
stop switch wires
1 Remove the air filter cover.
2 Insert the throttle cable (A) to the end of the adjuster
(B).
3 Position the slotted fitting (C) on the carburettor so the
recessed hole (D) for the cable lug (E) is away from
the cable adjuster sleeve.
4 Rotate the carburettor throttle cam and slip the throttle
cable through the slot in the slotted fitting, making
sure the cable lug drops into the recessed hole.
5 Operate the throttle trigger a few times to make sure
that it works correctly.
6 Adjust the cable adjuster sleeve so the stop on the
carburettor throttle cam just contacts the throttle stop
A
ASSEMBLY
English – 13
and the cable position keep 1-2mm play between the
cable lug and the slotted fitting when the throttle
trigger is fully depressed.
7 When the throttle cable is adjusted correctly, tighten
the lock-nut (F) and the M3 screw (G).
8 Plug the stop switch wires (H) into the matching
connectors from the engine. Note that wire polarity is
not important.
9 Lap and fix the stop switch wires and connectors with
clamp (I).
10 Fit the dust cover (J).
11 Refit the air filter cover.
Fitting blades and trimmer heads
1-2mm
!
WARNING!
When fitting the cutting attachment it is
extremely important that the raised
section on the drive disc/support flange
engages correctly in the centre hole of
the cutting attachment. If the cutting
attachment is fitted incorrectly it can
result in serious and/or fatal personal
injury.
!
WARNING! Never use a cutting
attachment without an approved guard.
See the chapter on Technical data. If an
incorrect or faulty guard is fitted this can
cause serious personal injury.
IMPORTANT! If a saw blade or grass blade are to be
used the machine must be equipped with the correct
handlebar, blade guard and harness.
ASSEMBLY
14 – English
Fitting the guard extension
CAUTION! The guard extension shall always be fitted
when using the trimmer head/plastic blades and
combination guard. The guard extension shall always be
removed when using the grass blade and combination
guard.
Hook the blade guard/combination guard (A) onto the
fitting on the shaft and secure with the bolt.
Enter the guard extension guide in the slot of the
combination guard. Then click the guard extension into
position on the guard with the four quick-fasteners.
The guard extension is removed easily using a
screwdriver, see illustration.
Fitting a blade guard, grass blade and
grass cutter
•Hook the blade guard/combination guard (A) onto the
fitting on the shaft and secure with the bolt (L). Use the
recommended blade guard. See the Technical data
section. CAUTION! Ensure that the guard extension is
removed.
• Fit the drive disc (B) on the output shaft.
• Turn the blade shaft until one of the holes in the drive
disc aligns with the corresponding hole in the gear
housing.
• Insert the locking pin (C) in the hole to lock the shaft.
• Place the blade (D), support cup (E) and support
flange (F) on the output shaft.
• Fit the nut (G). The nut must be tightened to a torque
of 35-50 Nm (3.5-5 kpm). Use the socket spanner in
the tool kit. Hold the shaft of the spanner as close to
the blade guard as possible. To tighten the nut, turn
the spanner in the opposite direction to the direction
of rotation (Caution! left-hand thread).
Fitting the trimmer guard and trimmer
head
• Fit the correct trimmer guard (A) for use with the
trimmer head. CAUTION! Ensure that the guard
extension is fitted.
• Hook the trimmer guard/combination guard onto the
fitting on the shaft and secure with the bolt (L).
• Fit the drive disc (B) on the output shaft.
• Turn the blade shaft until one of the holes in the drive
disc aligns with the corresponding hole in the gear
housing.
A
G
E
D
F
B
C
BA
ML
H
A
L
C
M
ASSEMBLY
English – 15
• Insert the locking pin (C) in the hole to lock the shaft.
• Screw on the trimmer head/plastic blades (H) in the
opposite direction to the direction of rotation.
• To dismantle, follow the instructions in the reverse
order.
Fitting the transport guard
1 Insert the blade in the transport guard (A).
2 Snap the two fasteners (B) into the slots (C) to secure
the transport guard.
Adjusting the harness and
clearing saw
Put on the harness and hang the machine from the
support hook. Now make a final adjustment so that the
machine is in a comfortable working position when it
hangs from the harness. Tighten the screws.
Standard harness
Quick release
At the front is an easily accessible, quick release. Use this
if the engine catches fire or in any other emergency
situation that requires you to free yourself from the
machine and harness.
Spreading the load on your shoulders
A well-adjusted harness and machine makes work much
easier. Adjust the harness for the best working position.
Tension the side straps so that the weight is evenly
distributed across both shoulders.
Correct height
Adjust the shoulder strap so that the cutting attachment is
parallel to the ground.
!
WARNING! When using a clearing saw it
must always be hooked securely to the
harness. Otherwise you will be unable to
control the clearing saw safely and this
can result in injury to yourself or others.
Never use a harness with a defective
quick release.
H
H
FUEL HANDLING
16 – English
Fuel safety
Never start the machine:
1 If you have spilt fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
2 If you have spilt fuel on yourself or your clothes,
change your clothes. Wash any part of your body that
has come in contact with fuel. Use soap and water.
3 If the machine is leaking fuel. Check regularly for
leaks from the fuel cap and fuel lines.
Transport and storage
•Store and transport the machine and fuel so that there
is no risk of any leakage or fumes coming into contact
with sparks or naked flames, for example, from
electrical machinery, electric motors, electrical relays/
switches or boilers.
• When storing and transporting fuel always use
approved containers intended for this purpose.
• When storing the machine for long periods the fuel
tank must be emptied. Contact your local petrol
station to find out where to dispose of excess fuel.
• Ensure the machine is cleaned and that a complete
service is carried out before long-term storage.
• The transport guard must always be fitted to the
cutting attachment when the machine is being
transported or in storage.
• In order to prevent unintentional starting of the engine,
the spark plug cap must always be removed during
long-term storage, if the machine is not under close
supervision and when performing all service
measures.
Fuel
CAUTION! The machine is equipped with a two-stroke
engine and must always been run using a mixture of
petrol and two-stroke engine oil. It is important to
accurately measure the amount of oil to be mixed to
ensure that the correct mixture is obtained. When mixing
small amounts of fuel, even small inaccuracies can
drastically affect the ratio of the mixture.
Petrol
CAUTION! Always use a quality petrol/oil mixture at least
90 octane (RON). If your machine is equipped with a
catalytic converter (see chapter on Technical data) always
use a good quality unleaded petrol/oil mixture. Leaded
petrol will destroy the catalytic converter.
Use low-emission petrol, also known as alkylate petrol, if
it is available.
• The lowest octane recommended is 90 (RON). If you
run the engine on a lower octane grade than 90 so-
called knocking can occur. This gives rise to a high
engine temperature, which can result in serious
engine damage.
• When working at continuous high revs a higher octane
rating is recommended.
Two-stroke oil
• For best results and performance use HUSQVARNA
two-stroke engine oil, which is specially formulated for
our air-cooled two-stroke engines.
• Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
• Never use oil intended for four-stroke engines.
• A poor oil quality and/or too high oil/fuel ratio may
jeopardise function and decrease the life time of
catalytic converters.
• Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB
formulated for air-cooled, two-stroke engines.
!
WARNING! Take care when handling fuel.
Bear in mind the risk of fire, explosion
and inhaling fumes.
!
WARNING! Fuel and fuel fumes are
highly inflammable and can cause
serious injury when inhaled or allowed to
come in contact with the skin. For this
reason observe caution when handling
fuel and make sure there is adequate
ventilation.
Petrol, litre Two-stroke oil, litre
2% (1:50) 3% (1:33)
50,10 0,15
10 0,20 0,30
15 0,30 0,45
20 0,40 0,60
FUEL HANDLING
English – 17
Mixing
• Always mix the petrol and oil in a clean container
intended for fuel.
• Always start by filling half the amount of the petrol to
be used. Then add the entire amount of oil. Mix
(shake) the fuel mixture. Add the remaining amount of
petrol.
• Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
• Do not mix more than one month’s supply of fuel at a
time.
• If the machine is not used for some time the fuel tank
should be emptied and cleaned.
Fuelling
• Always use a fuel container with an anti-spill valve.
• Clean the area around the fuel cap. Contamination in
the tank can cause operating problems.
• Ensure that the fuel is well mixed by shaking the
container before filling the tank.
!
WARNING! Taking the following
precautions, will lessen the risk of fire:
Do not smoke or place hot objects near
fuel.
Always shut off the engine before
refuelling.
Always stop the engine and let it cool for
a few minutes before refuelling.
When refuelling, open the fuel cap slowly
so that any excess pressure is released
gently.
Tighten the fuel cap carefully after
refuelling.
Always move the machine away from the
refuelling area before starting.
STARTING AND STOPPING
18 – English
Check before starting
• Never use the machine without a guard nor with a
defective guard.
• All covers must be correctly fitted and undamaged
before you start the machine.
• Check the blade to ensure that no cracks have formed
at the bottom of the teeth or by the centre hole. The
most common reason why cracks are formed is that
sharp corners have been formed at the bottom of the
teeth while sharpening or that the blade has been
used with dull teeth. Discard a blade if cracks are
found.
• Check that the support flange is not cracked due to
fatigue or due to being tightened too much. Discard
the support flange if it is cracked.
• Ensure the locking nut has not lost its captive force.
The nut lock should have a locking force of at least 1.5
Nm. The tightening torque of the locking nut should be
35-50 Nm.
• Check that the blade guard is not damaged or
cracked. Replace the blade guard if it is exposed to
impact or is cracked.
• Check that the trimmer head and trimmer guard are
not damaged or cracked. Replace the trimmer head or
trimmer guard if they have been exposed to impact or
are cracked.
Starting and stopping
Starting
Ignition: Set the throttle to the start position by first
pressing the throttle control (2) and the throttle lockout (1),
then set the stop switch (C) to the ”I (START)” position (B).
Then release the throttle lockout and throttle trigger.
(A) Stop
(B) Start
(C) Stop switch
!
WARNING! The complete clutch cover
and shaft must be fitted before the
machine is started, otherwise the clutch
can come loose and cause personal
injury.
Always move the machine away from the
refuelling area before starting. Place the
machine on a flat surface. Ensure the
cutting attachment cannot come into
contact with any object.
Make sure no unauthorised persons are
in the working area, otherwise there is a
risk of serious personal injury. The safety
distance is 15 metres.
STARTING AND STOPPING
English – 19
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
Choke: Set the choke control in the choke position.
(1) Choke control
(2) Choke position
(3) Open position
Hold the body of the machine on the ground using your
left hand (CAUTION! Not with your foot!). Grip the starter
handle, slowly pull out the cord with your right hand until
you feel some resistance (the starter pawls grip), now
quickly and powerfully pull the cord. Never twist the
starter cord around your hand.
Repeat pulling the cord until the engine starts. When the
engine starts. return choke control to run position and
apply full throttle; the throttle will automatically disengage
from the start setting.
CAUTION! Do not pull the starter cord all the way out and
do not let go of the starter handle when the cord is fully
extended. This can damage the machine.
CAUTION! Do not put any part of your body in marked
area. Contact can result in burns to the skin, or electrical
shock if the spark plug cap has been damaged. Always
use gloves. Do not use a machine with damaged spark
plug cap.
Stopping
Stop the engine by switching off the ignition.
(A) Stop
(B) Start
(C) Stop switch
(1) Choke control
(2) Choke position
(3) Open position
!
WARNING! When the engine is started
with the choke in either the choke or
start throttle positions the cutting
attachment will start to rotate
immediately.
IMPORTANT! If the engine does not stop when setting
the ignition switch to the stop position, close the choke
lever and stop the engine. In this case, please repair the
machine at your nearest servicing dealer.
WORKING TECHNIQUES
20 – English
General working instructions
Basic safety rules
1 Look around you:
• To ensure that people, animals or other things cannot
affect your control of the machine.
• To ensure that people, animals, etc., do not come into
contact with the cutting attachment or loose objects
that are thrown out by the cutting attachment.
• CAUTION! Do not use the machine unless you are
able to call for help in the event of an accident.
2 Inspect the working area. Remove all loose objects,
such as stones, broken glass, nails, steel wire, string,
etc. that could be thrown out or become wrapped
around the cutting attachment.
3 Do not use the machine in bad weather, such as
dense fog, heavy rain, strong wind, intense cold, etc.
Working in bad weather is tiring and often brings
added risks, such as icy ground, unpredictable felling
direction, etc.
4 Make sure you can move and stand safely. Check the
area around you for possible obstacles (roots, rocks,
branches, ditches, etc.) in case you have to move
suddenly. Take great care when working on sloping
ground.
5 Keep a good balance and a firm foothold.
6 Always hold the machine with both hands. Hold the
machine on the right side of your body.
7 Keep the cutting attachment below waist level.
8 Switch off the engine before moving to another area.
Fit the transport guard before carrying or transporting
the equipment any distance.
9 Never put the machine down with the engine running
unless you have it in clear sight.
IMPORTANT!
This section describes the basic safety precautions for
working with clearing saws and trimmers.
If you encounter a situation where you are uncertain
how to proceed you should ask an expert. Contact your
dealer or your service workshop.
Avoid all usage which you consider to be beyond your
capability.
You must understand the difference between forestry
clearing, grass clearing and grass trimming before use.
!
WARNING! Neither the operator of the
machine nor anyone else may attempt to
remove the cut material while the engine
is running or the cutting equipment is
rotating, as this can result in serious
injury.
Stop the engine and cutting equipment
before you remove material that has
wound around the blade shaft as
otherwise there is a risk of injury. The
bevel gear can get hot during use and
may remain so for a while afterwards. You
could get burnt if you touch it.
!
WARNING! Watch out for thrown objects.
Always wear approved eye protection.
Never lean over the cutting attachment
guard. Stones, rubbish, etc. can be
thrown up into the eyes causing
blindness or serious injury.
Keep unauthorised persons at a
distance. Children, animals, onlookers
and helpers should be kept outside the
safety zone of 15 m. Stop the machine
immediately if anyone approaches. Never
swing the machine around without first
checking behind you to make sure no-
one is within the safety zone.
WORKING TECHNIQUES
English – 21
Basic working techniques
Always slow the engine to idle speed after each working
operation. Long periods at full throttle without any load on
the engine can lead to serious engine damage.
Grass clearing using a grass blade
• Grass blades and grass cutters must not be used on
woody stems.
• A grass blade is used for all types of tall or coarse
grass.
• The grass is cut down with a sideways, swinging
movement, where the movement from right-to-left is
the clearing stroke and the movement from left-to-
right is the return stroke. Let the left-hand side of the
blade (between 8 and 12 o’clock) do the cutting.
• If the blade is angled to the left when clearing grass,
the grass will collect in a line, which makes it easier to
collect, e.g. by raking.
• Try to work rhythmically. Stand firmly with your feet
apart. Move forward after the return stroke and stand
firmly again.
• Let the support cup rest lightly against the ground. It
is used to protect the blade from hitting the ground.
• Reduce the risk of material wrapping around the blade
by following these instructions:
1Always work at full throttle.
2Avoid the previously cut material during the return
stroke.
• Stop the engine, unclip the harness and place the
machine on the ground before you start to collect the
cut material.
Grass trimming with a trimmer head
Trimming
• Hold the trimmer head just above the ground at an
angle. It is the end of the cord that does the work. Let
the cord work at its own pace. Never press the cord
into the area to be cut.
• The cord can easily remove grass and weeds up
against walls, fences, trees and borders, however it
can also damage sensitive bark on trees and bushes,
and damage fence posts.
• Reduce the risk of damaging plants by shortening the
cord to 10-12 cm and reducing the engine speed.
Clearing
• The clearing technique removes all unwanted
vegetation. Keep the trimmer head just above the
ground and tilt it. Let the end of the cord strike the
ground around trees, posts, statues and the like.
CAUTION! This technique increases the wear on the
cord.
• The cord wears quicker and must be fed forward more
often when working against stones, brick, concrete,
metal fences, etc., than when coming into contact with
trees and wooden fences.
• When trimming and clearing you should use less than
full throttle so that the cord lasts longer and to reduce
the wear on the trimmer head.
!
WARNING! Sometimes branches or
grass get caught between the guard and
cutting attachment. Always stop the
engine before cleaning.
!
WARNING! Machines fitted with saw
blades or grass blades can be thrown
violently to the side when the blade
comes into contact with a fixed object.
This is called blade thrust. A blade thrust
can be violent enough to cause the
machine and/or operator to be propelled
in any direction, and possibly lose
control of the machine. Blade thrust can
occur without warning if the machine
snags, stalls or binds. Blade thrust is
more likely to occur in areas where it is
difficult to see the material being cut.
Avoid cutting with the area of the blade
between the 12 o'clock and 3 o'clock
positions. Because of the speed of
rotation of the blade, blade thrust can
occur if you attempt to cut thick stems
with this area of the blade.
WORKING TECHNIQUES
22 – English
Cutting
•The trimmer is ideal for cutting grass that is difficult to
reach using a normal lawn mower. Keep the cord
parallel to the ground when cutting. Avoid pressing the
trimmer head against the ground as this can ruin the
lawn and damage the tool.
• Do not allow the trimmer head to constantly come into
contact with the ground during normal cutting.
Constant contact of this type can cause damage and
wear to the trimmer head.
Sweeping
• The fan effect of the rotating cord can be used for
quick and easy clearing up. Hold the cord parallel to
and above the area to be swept and move the tool to
and fro.
• When cutting and sweeping you should use full
throttle to obtain the best results.
MAINTENANCE
English – 23
Carburettor
Adjusting the idle speed (T)
Check that the air filter is clean. When the idle speed is
correct, the cutting attachment should not rotate. If
adjustment is required, close (turn clockwise) the idle
adjustment screw T, with the engine running, until the
cutting attachment starts to rotate. Open (turn
anticlockwise) the screw until the cutting attachment
stops. The idle speed is correctly set when the engine
runs smoothly in all positions, and there is a clear margin
to the speed at which the cutting attachment starts to
rotate.
Note: The machine should only be run for short periods at
its highest speed.
Muffler
CAUTION!
The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator. The
exhaust gases are hot and can contain sparks, which may
cause fire if directed against dry and combustible
material.
Procedures to be performed after every
100 hours of use
1Remove the muffler, insert a screwdriver into the vent,
and wipe away any carbon builup. Wipe away any
carbon buildup on the muffler exhaust vent and
cylinder exhaust vent at the same time.
2 Tighten all screws, bolts and fittings.
3 Check to see if any oil or grease has worked its way in
between the clutch lining and drum, and if it has, wipe
it away using oil-free, lead-free gasoline.
CAUTION! Never use a machine with a defective muffler.
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
1 Cooling fins on the cylinder.
2 Air intake / cooling vent (back)
Clean the cooling system with a brush once a week, more
often in demanding conditions. A dirty or blocked cooling
system results in the machine overheating which causes
damage to the piston and cylinder.
!
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service
workshop. Do not use the machine until
it has been correctly adjusted or
repaired.
MAINTENANCE
24 – English
Air filter
The air filter must be regularly cleaned to remove dust
and dirt in order to avoid:
• Carburettor malfunctions
• Starting problems
• Loss of engine power
• Unnecessary wear to engine parts.
• Excessive fuel consumption.
Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water. Ensure that the filter is dry
before refitting it.
An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced
with a new one at regular intervals. A damaged air filter
must always be replaced.
Fuel filter
1 Fuel filter
When the engine runs short of fuel supply, check the fuel
cap and the fuel filter for blockage.
Bevel gear
The bevel gear is filled with the right quantity of grease at
the factory. However, before using the machine you
should check that the bevel gear is filled three-quarters
full with grease. Use HUSQVARNA special grease.
The grease in the bevel gear does not normally need to
be changed except if repairs are carried out.
Spark plug
The spark plug condition is influenced by:
• Incorrect carburettor adjustment.
• An incorrect fuel mixture (too much or incorrect type
of oil).
• A dirty air filter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting difficulties.
If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0,6-0,7 mm.
The spark plug should be replaced after about a month in
operation or earlier if necessary.
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder. Check that the spark plug is fitted with a
suppressor.
English – 25
MAINTENANCE
Maintenance schedule
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the
Maintenance section. The user must only carry out the maintenance and service work described in this Operator’s
Manual. More extensive work must be carried out by an authorised service workshop.
Maintenance Daily
maintenance
Weekly
maintenance
Monthly
maintenance
Clean the outside of the machine. X
Check that the harness is not damaged. X
Make sure the throttle trigger lock and the throttle function
correctly from a safety point of view. X
Check that the handle and handlebar are undamaged and
secured correctly. X
Check that the stop switch works correctly. X
Check that the cutting attachment does not rotate at idle. X
Clean the air filter. Replace if necessary. X
Check that the guard is undamaged and not cracked. Replace
the guard if it has been exposed to impact or is cracked. X
Check that the blade is correctly centred, is sharp, and is not
cracked. An off-centre blade will cause vibration that could result
in damage to the machine.
X
Check that the trimmer head is undamaged and not cracked.
Replace the trimmer head if necessary. X
Check that the locking nut of the cutting equipment is tighten
correctly. X
Check that the transport guard for the blade is intact and that it
can be secured correctly. X
Check that nuts and screws are tight. X
Check that there are no fuel leaks from the engine, tank or fuel
lines. X
Check the starter and starter cord. X
Check that the vibration damping elements are not damaged. X
Clean the outside of the spark plug. Remove it and check the
electrode gap. Adjust the gap to 0,6-0,7 mm or replace the spark
plug. Check that the spark plug is fitted with a suppressor.
X
Clean the machine’s cooling system. X
Clean the outside of the carburettor and the space around it. X
Check that the bevel gear is filled three-quarters full with
lubricant. Fill if necessary using special grease. X
Clean the muffler. X
Check the fuel filter from contamination and the fuel hose from
cracks or other defects. Replace if necessary. X
Check all cables and connections. X
Check the clutch, clutch springs and the clutch drum for wear.
Replace if necessary by an autorized service workshop. X
Replace the spark plug. Check that the spark plug is fitted with a
suppressor. X
26 – English
TECHNICAL DATA
Technical data
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/
EC.
Note 2: Equivalent sound pressure level is calculated as the time-weighted energy total for sound pressure levels under
various working conditions with the following time distribution: 1/2 idling and 1/2 max speed.
NOTE! The noise pressure level at operator’s ear and vibrations on the handles are measured with all the approved
cutting attachments for the machine. The table indicates the lowest and highest values.
Technical data 143R-II
Engine
Cylinder displacement, cm341,5
Cylinder bore, mm 40
Stroke, mm 33
Idle speed, rpm 2500
Recommended max. fast idle speed, rpm 12000
Speed of output shaft, rpm 9270
Max. engine output, acc. to ISO 8893, kW/ rpm 1,47/7500
Ignition system
Manufacturer/type of ignition system Ikeda Denso
Spark plug NGK BPMR 7A
Electrode gap, mm 0,6-0,7
Fuel and lubrication system
Manufacturer/type of carburettor Walbro WYJ
Fuel tank capacity, litre 0,94
Weight
Weight without fuel, cutting attachment and guard, kg 7,2
Noise emissions
(see note 1)
Sound power level, measured dB(A) 113
Sound power level, guaranteed LWA dB(A) 114
Noise levels
(see note 2)
Equivalent sound pressure level at the operator's ear,
measured according to EN ISO 22868, dB(A), min./max.: 76/102
Vibration levels
Vibration levels at handles, measured according to
EN ISO 22867, m/s2
At idle, left/right handles, min.: 3,8/4,2
At idle, left/right handles, max.: 4,2/4,8
At max. speed, left/right handles, min.: 6,8/7,9
At max. speed, left/right handles, max.: 6,9/8,0
English – 27
TECHNICAL DATA
EC-declaration of conformity
(Applies to Europe only)
We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare that the clearing saws Husqvarna
143R-II with serial numbers dating from 2008 onwards (the year is clearly stated on the rating plate, followed by the serial
number), comply with the requirements of the COUNCIL’S DIRECTIVE:
- of June 22, 1998 ”relating to machinery” 98/37/EC, annex IIA.
- of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.
- of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC. Conformity assessment according
to Annex V. For information relating to noise emissions, see the chapter Technical data.
The following standards have been applied: EN ISO 12100-2, CISPR 12:2005, EN ISO 11806
TUV Rheinland Japan Ltd., 9F 3-19-5 Shin Yokohama, Kohoku-ku, Yokohama 222-0033, Japan, has performed voluntary
type examination on behalf of Husqvarna AB. The certificates are numbered: AM 50127614
Huskvarna February 20, 2008
Michael Kullberg, Business manager
Approved accessories Type Cutting attachment guard, Art. no.
Grass blade/grass cutter
Grass 255-4 1" (Ø 255 4-teeth) 537 33 16-01
Grass 330-2 (Ø 330 2 teeth)
(Not for Europe) 537 33 16-01
Multi 275-4 (Ø 275 4 teeth) 537 33 16-01
Multi 300-3 (Ø 300 3 teeth) 537 33 16-01
Plastic blades Tricut Ø 300 mm 537 33 16-01
Trimmer head
Trimmy S II 537 33 16-01
S35 537 33 16-01
T35, T35x 537 33 16-01
T45x 537 33 16-01
T55x 537 33 16-01
Support cup Fixed -
"Clic"
123
5
67
10 11
8,5 m
28'
4
8
4,2 m
14'
2,4-2,7 mm
.095-.106"
10 cm
4"
6"
15 cm
S35
12
4
3
2,4-2,7 mm
.095-.106"
4,25 m
14'
4,25 m
14'
B
6"
15 cm
A
6"
15 cm
S35
5
T35, T35x
"Clic"
123
5
67
9
8,5 m
28'
4
8
4,3 m
14'
2,4-2,7 mm
.095-.106"
10 cm
4"
6"
15 cm
"Clic"
123
5
67
9
10 m
32'
4
8
4,3 m
14'
2,7-3,3 mm
.106-.13"
10 cm
4"
6"
15 cm
T45, T45x
A2,7 - 4,0 mm / .105 - .160"
B8 m / 26’
C15 cm / 5.9"
123
5
67
9
4
8
6"
15 cm
B
C
A
T55x
"Clic"
12
34
567
89
35-50 NM
~ 15 cm
6'
"Clic"
~ 3,5 m
11 '
7,0 m
23'
2,4-3,3 mm
.095"-.130"
12 cm
5"
Trimmy SII

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