Operator’s manual
345FR 545FX 545FXT
545RX 545RXT
Please read the operator’s manual carefully and make sure you understand the instructions
before using the machine.
English
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CONTENTS
TECHNICAL DATA
Contents
KEY TO SYMBOLS
Technical data ....................................................... 34
FEDERAL EMISSION CONTROL WARRANTY
STATEMENT
Symbols ................................................................
CONTENTS
YOUR WARRANTY RIGHTS AND OBLIGATIONS 38
Contents ...............................................................
Note the following before starting: ........................
INTRODUCTION
Note the following before
starting:
Dear customer! .....................................................
WHAT IS WHAT?
Please read the operator’s manual carefully.
Maintenance, replacement, or repair of the emission
control devices and system may be performed by any
nonroad engine repair establishment or individual.
What is what on the brush cutter? ........................
What is what on the brush cutter? ........................
What is what on the brush cutter? ........................
GENERAL SAFETY PRECAUTIONS
Important ..............................................................
Personal protective equipment .............................
Machine′s safety equipment .................................
5
6
7
WARNING! Long-term exposure to noise
can result in permanent hearing
impairment. So always use approved
hearing protection.
!
Cutting equipment ................................................ 12
ASSEMBLY
WARNING! Under no circumstances may
the design of the machine be modified
without the permission of the
manufacturer. Always use genuine
accessories. Non-authorized
!
Assembling the handlebar and throttle ................. 15
Transport position, handlebar ............................... 15
Assembling the cutting equipment ....................... 15
modifications and/or accessories can
result in serious personal injury or the
death of the operator or others.
Fitting the blade guard/combination guard, grass
blade and ball-bearing-mounted support cup ....... 16
Fitting the blade guard and saw blade .................. 16
Your warranty may not cover damage or
liability caused by the use of non-
authorized accessories or replacement
parts.
Fitting the trimmer guard and trimmer headTrimmy
SII ......................................................................... 17
Fitting other guards and cutting attachments ....... 18
Adjusting the harness and brush cutter ................ 18
Balance X ............................................................. 18
Balance XT ........................................................... 19
FUEL HANDLING
WARNING! 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.
!
Fuel safety ............................................................ 21
Fuel ...................................................................... 21
Fueling .................................................................. 22
STARTING AND STOPPING
Check before starting ........................................... 23
Starting and stopping ........................................... 23
WORKING TECHNIQUES
General working instructions ................................ 25
MAINTENANCE
Carburetor ............................................................ 29
Muffler .................................................................. 30
Cooling system ..................................................... 30
Air filter ................................................................. 30
Bevel gear ............................................................ 31
Drive shaft ............................................................ 31
Spark plug ............................................................ 31
Winter use ............................................................ 31
Maintenance schedule ......................................... 33
The Emissions Compliance Period referred to on the
Emission Compliance label indicates the number of
operating hours for which the engine has been shown to
meet Federal emissions requirements.
English – 3
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INTRODUCTION
Dear customer!
Congratulations 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 Huskvarna 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 over 300 years of continuous operation, 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. We develop, manufacture and market high quality motor driven products for forestry and gardening as
well as for building and construction industry.
Your purchase 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 authorized dealers, ask for the address of your nearest servicing dealer.
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 ever lend or sell this machine, make sure that the
borrower or buyer gets the operator′s manual, so they will also know how to properly maintain and use it.
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.
4 – English
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WHAT IS WHAT?
3
8
2
32
31
5
17
7
9
33
10
18
19
20
35
13
6
11
1
22
23
12
14
34
21
34
21
4
4
16
15
25
26
28
30
27
29
24
What is what on the brush cutter? (545 RX, 545 RXT)
1
2
3
4
5
6
7
8
9
Grass blade
19 Support cup
20 Support flange
21 Drive disc
Grease filler cap, bevel gear
Bevel gear
Cutting attachment guard
Shaft
22 Trimmer head
23 Spark plug cap and spark plug
24 Socket spanner
25 Operator’s manual
26 Transport guard
27 Allen key
Handlebar
Throttle trigger
Stop switch
Throttle lockout
10 Support eyes for harness
11 Cylinder cover
12 Starter handle
13 Fuel tank
28 Carburettor screwdriver
29 Locking pin
30 Harness
31 Locking nut
14 Choke control
15 Air purge
32 Start throttle button
33 Adjusting the throttle wire
34 Metal cup
16 Air filter cover
17 Handle adjustment
18 Locking screw
35 Decompression valve
English – 5
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WHAT IS WHAT?
8
3
2
7
18
5
9
29
17
10
30
6
4
13
18
19
11
21
12
1
14
20
23
16
15
24
22
28
26
25
27
What is what on the brush cutter? (545 FX, 545 FXT)
1
2
3
4
5
6
7
8
9
Saw blade
16 Air filter cover
Grease filler cap, bevel gear
Bevel gear
17 Handle adjustment
18 Locking nut
Cutting attachment guard
Shaft
19 Support flange
20 Drive disc
Handlebar
21 Spark plug
Throttle trigger
Stop switch
22 Socket spanner
23 Operator’s manual
24 Transport guard
25 Allen key
Throttle lockout
10 Support eyes for harness
11 Cylinder cover
12 Starter handle
13 Fuel tank
26 Carburettor screwdriver
27 Locking pin
28 Harness
14 Choke control
15 Air purge
29 Switch for heated handle (545 FXT)
30 Decompression valve
6 – English
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WHAT IS WHAT?
8
3
2
33
19
5
7
9
17
34
10
35
13
6
11
25
18
12
14
24
23
21
22
20
4
16
1
19
20
15
21
22
20
1
4
4
32
26
30
28
27
29
31
What is what on the brush cutter? (345 FR)
1
2
3
4
5
6
7
8
9
Blade
19 Locking nut
20 Drive disc
Grease filler cap, bevel gear
Bevel gear
21 Support flange
22 Metal cup
Cutting attachment guard
Shaft
23 Support cup
24 Locking screw
25 Trimmer head
26 Transport guard
27 Allen key
Handlebar
Throttle trigger
Stop switch
Throttle lockout
10 Support eyes for harness
11 Cylinder cover
28 Carburettor screwdriver
29 Locking pin
12 Starter handle
30 Harness
13 Fuel tank
31 Socket spanner
14 Choke control
32 Operator’s manual
33 Start throttle button
34 Adjusting the throttle wire
35 Decompression valve
15 Air purge
16 Air filter cover
17 Handle adjustment
18 Spark plug cap and spark plug
English – 7
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GENERAL SAFETY PRECAUTIONS
Important
Personal protective equipment
IMPORTANT!
IMPORTANT!
The machine is only designed for trimming grass, grass
clearing and/or forestry clearing.
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.
The only accessories you can operate with this engine
unit are the cutting attachments we recommend in the
chapter on Technical data.
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.
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.
WARNING! Listen out for warning signals
or shouts when you are wearing hearing
protection. Always remove your hearing
protection as soon as the engine stops.
!
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.
HELMET
A helmet should be worn if the trees being cleared are
taller than 2 m.
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.
HEARING PROTECTION
Wear hearing protection that provides adequate noise
reduction.
Do an overall inspection of the machine before use, see
maintenance schedule.
WARNING! This machine produces an
electromagnetic field during operation.
This field may under some
!
EYE PROTECTION
circumstances interfere with active or
passive medical implants.To reduce the
risk of serious or fatal injury, we
recommend persons with medical
implants to consult their physician and
the medical implant manufacturer before
operating this machine.
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.
WARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
!
GLOVES
Gloves should be worn when necessary, e.g., when fitting
cutting attachments.
8 – English
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GENERAL SAFETY PRECAUTIONS
BOOTS
Throttle lockout
Wear boots with steel toe-caps and non-slip sole.
The throttle lockout 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.
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.
Make sure the throttle control is locked at the idle setting
when the throttle lockout is released.
Machine′s safety equipment
This section describes the machine′s safety equipment,
its purpose, and how checks and maintenance should be
carried out to ensure that it operates correctly. See the
”What is what?” section to locate where this equipment is
positioned on your machine.
Press the throttle lockout and make sure it returns to its
original position when you release it.
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 servicing dealer.
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.
Check that the throttle trigger and throttle lockout move
freely and that the return springs work properly.
WARNING! 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.
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
!
English – 9
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GENERAL SAFETY PRECAUTIONS
be checked. See instructions under the heading
Maintenance.
Vibration damping system
Your machine is equipped with a vibration damping
system that is designed to reduce vibration and make
operation easier.
Use of incorrectly wound cord or an incorrect cutting
attachment increases the level of vibration. See
instructions under the heading Cutting equipment.
Stop switch
The machine′s vibration damping system reduces the
transfer of vibration between the engine unit/cutting
equipment and the machine′s handle unit.
Use the stop switch to switch off the engine.
Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
Regularly check the vibration damping units for cracks or
deformation. Check that the vibration damping element is
undamaged and securely attached.
Cutting attachment guard
WARNING! Overexposure to vibration
can lead to circulatory damage or nerve
!
This guard is intended to prevent loose objects from being
thrown towards the operator. The guard also protects the
operator from accidental contact with the cutting
attachment.
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.
Quick release
Check that the guard is undamaged and not cracked.
Replace the guard if it has been exposed to impact or is
cracked.
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 brush
Always use the recommended guard for the cutting
attachment you are using. See chapter on Technical data.
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.
10 – English
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GENERAL SAFETY PRECAUTIONS
cutter. Certain harnesses also have a quick release fitted
to the support hook.
If the muffler on your machine is fitted with a spark
arrestor screen this must be cleaned regularly. A blocked
screen will cause the engine to overheat and may lead to
serious damage.
Check that the harness straps are correctly positioned.
Once the harness and machine have been adjusted,
check that the harness quick release works correctly.
WARNING! Mufflers fitted with catalytic
converters get very hot during use and
Muffler
!
remain so for some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin.
Remember the risk of fire!
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user. A muffler
fitted with a catalytic converter is also designed to reduce
harmful exhaust gases.
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:
!
In countries that have a warm and dry climate there is a
significant risk of fire.We therefore fit certain mufflers with
a spark arrestor screen. Check whether the muffler on
your machine is fitted with this kind of screen.
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!
Locking nut
A locking nut is used to secure some types of cutting
attachment.
For mufflers it is very important that you follow the
instructions on checking, maintaining and servicing your
machine. See instructions under the heading Checking,
maintaining and servicing the machine’s safety
equipment.
Never use a machine that has a faulty muffler.
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.) When loosening and tightening the saw blade
nut, there is a risk of injury from the teeth of the saw blade.
You should therefore always ensure that your hand is
shielded by the blade guard when doing this. Always use
a socket spanner with a shaft that is long enough to allow
this. The arrow in the diagram shows the area where you
Regularly check that the muffler is securely attached to
the machine.
English – 11
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GENERAL SAFETY PRECAUTIONS
should operate the socket spanner when loosening or
tightening the nut.
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.
!
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.
Cutting equipment
Saw blades are intended for cutting fibrous types of wood.
Locking screw
The lock screw must be tightened securely for ball-
bearing-mounted support cups.
Grass blades and grass knifes are intended for cutting
coarse grass.
Shredder blades are intended for cutting coarse grass
and bushes.
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.
A trimmer head is intended for trimming grass.
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.
General rules
Keep the teeth of the blade correctly sharpened! Follow
our recommendations. Also refer to the instructions on
the blade packaging.
Only use cutting attachments with the guards we
recommend! See the chapter on Technical data.
Maintain the correct blade setting! Follow our
instructions and use the recommended file gauge.
Keep the teeth of the blade correctly sharpened! Follow
our instructions and use the recommended file gauge. An
12 – English
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GENERAL SAFETY PRECAUTIONS
incorrectly sharpened or damaged blade increases the
risk of accidents.
Sharpening the saw blade
•
See the cutting attachment packaging for correct
sharpening instructions.
A correctly sharpened blade is essential for working
efficiently and to avoid unnecessary wear to the blade and
brush cutter.
Keep the correct setting on the saw blade! Follow our
instructions and use the recommended setting tool. An
incorrectly set saw blade increases the risk of jamming
and blade thrust, and damage to the saw blade.
Check the cutting attachment for damage or cracks. A
damaged cutting attachment should always be replaced.
•
•
Make sure that the blade is well supported when you
file it. Use a 5.5 mm round file with a file holder.
Sharpening grass knifes and grass
blades
The filing angle is 15°. File alternate teeth to the right
and those in between to the left. If the blade has been
heavily pitted by stones it may be necessary to dress
the top edges of the teeth with a flat file, in exceptional
cases. If so, this should be done before filing with a
round file. The top edges must be filed down by the
same amount for all the teeth.
•
•
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.
Adjust the blade setting. This should be 1 mm.
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.
English – 13
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GENERAL SAFETY PRECAUTIONS
Trimmer head
IMPORTANT!
Always ensure the trimmer cord is wound tightly and
evenly around the drum, otherwise the machine will
generate harmful vibration.
•
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.
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ASSEMBLY
•
Tighten the knob.
Assembling the handlebar and
throttle
Transport position, handlebar
CAUTION! Some models have the throttle handle fitted at
the factory.
•
•
•
The handlebar can easily be turned to fit along the
shaft for easier transportation and storage.
•
•
Remove the screw at the rear of the throttle handle.
Loosen the knob.Turn the handlebar clockwise so that
the throttle handle rests against the engine.
Slide the throttle handle onto the right side of the
handlebar, (see diagram).
Now twist the handlebar around the shaft.Tighten the
knob.
•
Fit the transport guard to the cutting attachment.
Assembling the cutting
equipment
•
•
•
Align the screw hole in the throttle handle with the hole
in the handlebar.
Refit the screw in the hole in the rear of the throttle
handle.
WARNING!
!
Screw the screw through the handle and handlebar.
Tighten it.
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.
•
•
Unscrew the knob from the handlebar mounting.
Position the handlebar as shown. Fit the mounting
components and tighten the knob lightly.
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.
!
345 FR
545 FX, 545 FXT
545 RX, 545 RXT
•
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.
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.
English – 15
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ASSEMBLY
must remain inside the gear housing to lock the drive
disk. Hold the shaft of the socket spanner as close to
the blade guard/combination guard as possible.
Fitting the blade guard/
combination guard, grass blade
and ball-bearing-mounted
support cup
•
Hang the trimmer guard/combination guard (A) on the
two hooks on the plate holder (M). Bend the guard
around the shaft and tighten it with the bolt (L) on the
opposite side of the shaft. Use the locking pin (C).
Place the locking pin in the groove on the screw head
and tighten. See diagram.
WARNING! Tighten the lock screw (N) in
the center hole of the support cup.
!
L
Tighten to a torque of 35-50 Nm (3.5-5.0
kpm), CAUTION! Left-hand thread. If the
lock screw is not fitted in the support
cup, there is a risk that the support cup
will come unscrewed.This means that
the blade will also come loose, which
could result in serious or fatal injury to
the operator or others.
M
C
A
CAUTION! Always use the recommended guard for the
cutting attachment you are using. See chapter on
Technical data.
Fitting the blade guard and saw
blade
•
•
Fit the drive disc (B) on the angle gear’s output shaft.
Centre the metal cup (P) on the drive disc’s blade
guide.
CAUTION! Always use the recommended guard for the
cutting attachment you are using. See chapter on
Technical data.
•
Turn the output shaft until one of the holes in the drive
disk aligns with the corresponding hole in the gear
housing.
•
•
Insert the locking pin (C) in the hole to lock the shaft.
545 FX, 545 FXT
Position the blade (D) with the drive disk (B). Make
sure that the blade is centered by fitting it to the guide
on the drive disk.
•
The blade guard (A) is fitted using 4 screws (L) as
shown.
•
Fit the support flange (F) on the output shaft so that it
rests against the blade.
L
A
N
E
F
345 FR, 545 RX, 545 RXT
D
P
•
Fit the holder (R) and bracket (J) with 2 bolts (H) on
the gear housing.
A
B
C
M
L
•
Screw the support cup (E) onto the output shaft
threads (CAUTION! Left-hand thread). Tighten to a
torque of 35-50 Nm (3.5-5.0 kpm). Use the socket
spanner in the tool kit. Note that the locking pin (C)
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ASSEMBLY
•
Then fasten the blade guard (A) with 4 bolts (L) in the
operate the socket spanner when loosening or tightening
holder (N).
the nut.
H
J
K
R
L
A
•
•
Fit the drive disc (B) on the output shaft.
Fitting the trimmer guard and
trimmer head Trimmy SII
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) and support flange (F) on the
output shaft.
•
Fit the correct trimmer guard (A) for use with the
trimmer head. Hang the trimmer guard/combination
guard (A) on the two hooks on the plate holder (M).
Bend the guard around the shaft and tighten it with the
bolt (L) on the opposite side of the shaft. Use the
locking pin (C). Place the locking pin in the groove on
the screw head and tighten. See diagram.
G
F
D
L
B
C
M
C
A
•
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).
•
Fit the drive disc (B) on the output shaft.
H
P
B
C
•
•
Centre the metal cup (P) on the drive disc’s blade
guide.
Turn the blade shaft until one of the holes in the drive
disc aligns with the corresponding hole in the gear
housing.
When loosening and tightening the saw blade nut, there
is a risk of injury from the teeth of the saw blade.You
should therefore always ensure that your hand is shielded
by the blade guard when doing this. Always use a socket
spanner with a shaft that is long enough to allow this.The
arrow in the diagram shows the area where you should
•
Insert the locking pin (C) in the hole to lock the shaft.
English – 17
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ASSEMBLY
•
Screw on the trimmer head (H) in the opposite
direction to the direction of rotation.
•
To dismantle, follow the instructions in the reverse
order.
Adjusting the harness and brush
cutter
H
C
WARNING! When using a brush cutter it
must always be hooked securely to the
harness. Otherwise you will be unable to
control the brush cutter safely and this
can result in injury to yourself or others.
Never use a harness with a defective
quick release.
!
•
•
Tighten the trimmer head to a torque of 35-50 Nm
(3.5-5 kpm).
To dismantle, follow the instructions in the reverse
order.
Balance X
Fitting other guards and cutting
attachments
(345 FR, 545 RX)
Safety release
•
Fit the trimmer guard/combination guard (A) intended
for use with the trimmer head/plastic blades. Hang the
trimmer guard/combination guard (A) on the two
hooks on the plate holder (M). Bend the guard around
the shaft and tighten it with the bolt (L) on the opposite
side of the shaft. Use the locking pin (C). Place the
locking pin in the groove on the screw head and
tighten. See diagram.
Push down the red release lever to release the machine
from the harness.
L
M
C
A
Adjusting the harness
•
Fit the drive disc (B) on the output shaft.
1
Tighten the hip strap so that it sits securely.
H
P
B
C
2
Tighten the chest strap under your left arm so that it
fits closely around your body.
•
•
Centre the metal cup (P) on the drive disc’s blade
guide.
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.
Screw on the trimmer head/plastic blades (H) in the
opposite direction to the direction of rotation.
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ASSEMBLY
3
Adjust the shoulder strap to distribute the load evenly
across your shoulders. Press downwards on the
suspension hook to load the harness.
Balance XT
(545FX, 545FXT, 545RXT)
4
Adjust the height of the suspension hook as described
in the instructions for the standard harness. (Forestry
clearing)
Safety release
Push down the red release lever to release the machine
from the harness.
5
6
If you need to lower the suspension hook, for trimming
for example, move the suspension strap (A) to the
lower mounting point on the backplate.
The elastic strap (B) can be tightened to transfer more
load from the shoulder straps to the hip strap.
Adjusting the harness
A
1
Adjust the harness to suit the person's height. Move
the shoulder strap attachment to a suitable hole in the
back plate by pressing in the spring-loaded lock and
twisting the shoulder strap attachment.
B
English – 19
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ASSEMBLY
2
Tighten the hip strap so that it sits securely.
9
If you need to lower the suspension hook, for trimming
for example, move the suspension strap (A) to the
lower mounting point on the backplate. The front belt
that is attached to the breast plate can also be
adjusted if necessary.
10 The elastic strap (B) can be tightened to transfer more
load from the shoulder straps to the hip strap.
3
4
The hip belt should hang roughly in line with the hip
bone.
Correct balance
1
Forestry clearing
Press the breast plate together.
The machine is balanced by moving the suspension
ring on the machine forwards or backwards. On some
models the suspension ring is fixed, however, this will
then have a number of holes for the support hook.The
machine is correctly balanced when it freely hangs
horizontally from the support hook. In this way the risk
of hitting stones is reduced if you need to release the
handlebar.
5
Attach the side belt to the breast plate.
6
7
To relieve pressure on the rib cage, it is possible to
connect the side belt with a belt to the hip pad.
(Suitable for females).
2
Grass clearing
Let the blade balance at a comfortable cutting height,
i.e. close to the ground.
Adjust the shoulder strap to distribute the load evenly
across your shoulders. Press downwards on the
suspension hook to load the harness.
8
Adjust the side belts to fit around the rib cage until the
breast plate is centred on the chest.
Adjust the height of the hanging ring as per the
instructions. (For forest clearing, the suspension should
hang approx. 10 cm below your hip bone.)
20 – English
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FUEL HANDLING
Gasoline
Fuel safety
Never start the machine:
1
2
If you have spilled fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
CAUTION! Always use a quality gasoline/oil mixture with
an octane rating of at least 87 octane ((RON+MON)/2). If
your machine is equipped with a catalytic converter (see
chapter on Technical data) always use a good quality
unleaded gasoline/oil mixture. Leaded gasoline will
destroy the catalytic converter.
If you have spilled 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.
Use low-emission gasoline, also known as alkylate
gasoline, if it is available.
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.
This engine is certified to operate on unleaded
gasoline.
•
•
When storing and transporting fuel always use
approved containers intended for this purpose.
•
The lowest recommended octane grade is 87
((RON+MON)/2). If you run the engine on a lower
octane grade than 87 so-called knocking can occur.
This gives rise to a high engine temperature and
increased bearing load, which can result in serious
engine damage.
When storing the machine for long periods the fuel
tank must be emptied. Contact your local gas 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.
•
When working at continuous high revs a higher octane
rating is recommended.
The transport guard must always be fitted to the
cutting attachment when the machine is being
transported or in storage.
Two-stroke oil
•
Secure the machine during transport.
•
For best results and performance use HUSQVARNA
two-stroke engine oil, which is specially formulated for
our air-cooled two stroke-engines.
WARNING!Take care when handling fuel.
Bear in mind the risk of fire, explosion
and inhaling fumes.
!
•
Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
Fuel
•
•
Never use oil intended for four-stroke engines.
Mixing ratio
CAUTION! The machine is equipped with a two-stroke
engine and must always been run using a mixture of
gasoline 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.
1:50 (2%) with HUSQVARNA two-stroke oil.
Gasoline, litre
Two-stroke oil, litre
2% (1:50)
0,10
5
10
0,20
WARNING! Fuel and fuel fumes are
highly inflammable and can cause
!
15
0,6/0,30
0,40
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.
20
US gallon
US fl. oz.
2 1/2
1
2 1/2
5
6 1/2
12 7/8
English – 21
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FUEL HANDLING
Fueling
Mixing
•
Always mix the gasoline and oil in a clean container
intended for fuel.
•
Always start by filling half the amount of the gasoline
to be used. Then add the entire amount of oil. Mix
(shake) the fuel mixture. Add the remaining amount of
gasoline.
WARNING! Taking the following
precautions, will lessen the risk of fire:
!
•
Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
Mix and pour fuel outdoors, where there
are no sparks or flames.
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.
•
•
Do not mix more than one month’s supply of fuel at a
time.
Tighten the fuel cap carefully after
refuelling.
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
Always move the machine away from the
refuelling area and source before
starting.
WARNING! The catalytic converter
muffler gets very hot during and after
use.This also applies during idling. Be
aware of the fire hazard, especially when
working near flammable substances and/
or vapours.
!
•
•
•
If you have spilled fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
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.
22 – English
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STARTING AND STOPPING
Check before starting
Starting and stopping
•
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.
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 and source 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.
•
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.
Cold engine
Choke: Set the choke control (A) in the choke position.
Primer bulb: Press the air purge diaphragm (B)
repeatedly until fuel begins to fill the diaphragm. The
diaphragm need not be completely filled.
•
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.
Warm engine
Use the same starting procedure as for a cold engine but
without setting the choke control in the choke position.
Start throttle: (545 FX, 545 FXT)
Set the throttle to the start position by moving the choke
control to the choke position and then returning it to its
original position.
•
•
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.
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STARTING AND STOPPING
Start throttle: (345 FR, 545 RX, 545 RXT)
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.
Set the throttle to the start position by first pressing the
throttle lockout and the throttle trigger, then pressing the
start throttle button (A). Then release the throttle lockout
and the throttle trigger, followed by the start throttle
button.The throttle function is now activated.To return the
engine to idle, press the throttle lockout and throttle
trigger again.
Stopping
345 FR, 545 RX, 545 RXT
Stop the engine by switching off the ignition.
Decompression valve
If the machine is fitted with a decompression valve (A):
Press the valve to reduce the pressure in the cylinder and
make starting easier.You should always use the
decompression valve when starting the machine. Once
the machine has started the valve will automatically return
to its original setting.
545 FX, 545 FXT
Starting
Heated handles
WARNING! When the engine is started
with the choke in either the choke or
(545 FXT)
!
Models equipped with heating elements in the handles
have an on/off switch on the throttle handle to control the
heat. Both the left and right handles have heating
elements that automatically maintain a temperature of
roughly 70° when the heat is turned on.
start throttle positions the cutting
attachment will start to rotate
immediately.
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 wrap 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.
24 – English
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WORKING TECHNIQUES
position yourself incorrectly or make the cut in the
General working instructions
wrong place the tree may hit you or the machine and
cause you to lose control. Both situations can cause
serious personal injury.
IMPORTANT!
This section describes the basic safety precautions for
working with brush cutters 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.
6
7
Keep a good balance and a firm foothold. Do not
overreach. Keep proper footing and balance at all
times.
Basic safety rules
Always hold the machine with both hands. Hold the
machine on the right side of your body. Keep all parts
of your body away from the hot surfaces. Keep all
parts of your body away from the rotating cutting
attachment.
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
4
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.
8
9
Keep the cutting attachment below waist level.
Switch off the engine before moving to another area.
Fit the transport guard before carrying or transporting
the equipment any distance.
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.
10 Never put the machine down with the engine running
unless you have it in clear sight.
The ABC of clearing
•
•
•
•
•
Always use the correct equipment.
Make sure the equipment is well adjusted.
Follow the safety precautions.
Organise your work carefully.
Always use full throttle when starting to cut with the
blade.
•
•
•
Always use sharp blades.
Avoid stones.
Control the felling direction (take advantage of the
wind).
5
Take great care when cutting a tree that is under
tension. A tree that is under tension may spring back
to its normal position before or after being cut. If you
English – 25
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WORKING TECHNIQUES
•
Work systematically to and fro across the area,
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.
clearing a width of around 4-5 m on each pass. This
exploits the full reach of the machine in both directions
and gives the operator a convenient and varied
working area to work in.
!
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.
!
•
•
Clear a strip around 75 m long. Move your fuel can as
work progresses.
On sloping ground you should work along the slope. It
is much easier to work along a slope than it is to work
up and down it.
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.
•
You should plan the strip so that you avoid going over
ditches or other obstacles on the ground.You should
also orient the strip to take advantage of wind
conditions, so that cleared stems fall in the cleared
area of the stand.
WARNING! Sometimes branches or
grass get caught between the guard and
cutting attachment. Always stop the
engine before cleaning.
!
Working methods
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.
!
Forestry clearing using a saw blade
•
The risk of blade thrust increases with increasing
stem size.You should therefore avoid cutting with the
area of the blade between 12 o’clock and 3 o’clock.
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.
•
•
Before you start clearing, check the clearing area, the
type of terrain, the slope of the ground, whether there
are stones, hollows etc.
Start at whichever end of the area is easiest, and clear
an open space from which to work.
26 – English
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WORKING TECHNIQUES
•
To fell to the left, the bottom of the tree should be
wood.Small stems require more pressure, while large
stems require less pressure.
pushed to the right. Tilt the blade and bring it
diagonally down to the right, exerting firm pressure.At
the same time push the stem using the blade guard.
Cut with the area of the blade between 3 o’clock and
5 o’clock. Apply full throttle before advancing the
blade.
•
To fell to the right, the bottom of the tree should be
pushed to the left.Tilt the blade and bring it diagonally
up to the right. Cut with the area of the blade between
3 o’clock and 5 o’clock so that the direction of rotation
of the blade pushes the bottom of the tree to the left.
•
•
If the stems are tightly packed, adapt your walking
pace to suit.
If the blade jams in a stem, never jerk the machine
free. If you do this the blade, bevel gear, shaft or
handlebar may be damaged. Release the handles,
grip the shaft with both hands and gently pull the
machine free.
Brush cutting with a saw blade
•
Thin stems and brush are mown down. Work with a
sawing movement, swinging sideways.
•
To fell a tree forwards, the bottom of the tree should be
pulled backwards. Pull the blade backwards with a
quick, firm movement.
•
•
Try to cut several stems in a single sawing movement.
With groups of hardwood stems, first clear around the
group. Start by cutting the stems high up around the
outside of the group to avoid jamming. Then cut the
stems to the required height. Now try to reach in with
the blade and cut from the centre of the group. If it is
still difficult to gain access, cut the stems high up and
let them fall. This will reduce the risk of jamming.
•
Large stems must be cut from two sides. First
determine which direction the stem will fall. Make the
first cut on the felling side.Then finish cutting the stem
from the other side. Adjust the cutting pressure to
match the size of the stem and the hardness of the
English – 27
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WORKING TECHNIQUES
can also damage sensitive bark on trees and bushes,
and damage fence posts.
Grass clearing using a grass blade
•
Reduce the risk of damaging plants by shortening the
cord to 10-12 cm and reducing the engine speed.
Clearing
•
•
•
Grass blades and grass knifes must not be used on
woody stems.
•
The clearing technique removes all unwanted
A grass blade is used for all types of tall or coarse
grass.
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 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.
•
•
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.
•
•
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.
Cutting
• The trimmer is ideal for cutting grass that is difficult to
Try to work rhythmically. Stand firmly with your feet
apart. Move forward after the return stroke and stand
firmly again.
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.
•
•
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.
•
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.
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.
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.
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.
•
When cutting and sweeping you should use full
throttle to obtain the best results.
•
The cord can easily remove grass and weeds up
against walls, fences, trees and borders, however it
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MAINTENANCE
first few hours the machine is in use. The carburettor
should then be finely adjusted. Fine adjustment
should be carried out by a skilled technician.
Carburetor
Your Husqvarna product has been designed and
manufactured to specifications that reduce harmful
emissions. After the engine has used 8-10 tanks of fuel
the engine will be run-in.To ensure that it continues to run
at peak performance and to minimise harmful exhaust
emissions after the running-in period, ask your dealer/
service workshop (who will have a rev counter at their
disposal) to adjust your carburettor.
CAUTION! If the cutting attachment rotates when the
engine is idling the idle adjustment screw T should be
turned anti-clockwise until the cutting attachment stops.
Adjustment of the idle speed
Before any adjustments are made, make sure that the air
filter is clean and the air filter cover is fitted.
Function
Adjust the idle speed using the idle adjustment screw T, if
it is necessary to readjust. First turn the idle adjustment
screw T clockwise until the cutting attachment starts to
rotate.Then turn the screw anticlockwise until the cutting
attachment stops. The idle speed is correctly adjusted
when the engine will run smoothly in every position. The
idle speed should also be well below the speed at which
the cutting attachment starts to rotate.
•
The carburetor governs the engine’s speed via the
throttle control. Air and fuel are mixed in the
carburetor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the machine. During adjustment the cutting
attachment could rotate. Wear personal protective
equipment. See instructions under the heading
”Personal protective equipment”.
•
•
The setting of the carburetor means that the engine is
adapted to local conditions, for example, the climate,
altitude, fuel and the type of 2-stroke oil.
The carburetor has three adjustment controls:
L = Low speed jet
H = High speed jet
Rec. idle speed: See the Technical data section.
T = Idle adjustment screw
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.
Adjusting the start throttle speed (345 FR,
545 RX, 545 RXT)
The correct start throttle speed is set by means of an
adjuster on the rear of the handle next to the cable. Use
this screw (5 mm Allen screw) to increase or decrease the
start throttle speed.
•
•
The L and H-jets are used to adjust the supply of fuel
to match the rate that air is admitted, which is
controlled with the throttle. If they are screwed
clockwise the air/fuel ratio becomes leaner (less fuel)
and if they are turned anti-clockwise the ratio
becomes richer (more fuel). A lean mixture gives a
higher engine speed and a rich mixture gives a lower
engine speed.
The T-screw regulates the throttle setting at idle
speed. If the T-screw is turned clockwise this gives a
higher idle speed; turning it anti-clockwise gives a
lower idle speed.
Basic setting
5 mm
•
The basic carburetor settings are adjusted during
testing at the factory. The basic setting is richer than
the optimal setting and should be maintained for the
English – 29
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MAINTENANCE
Proceed as follows:
Cooling system
1
2
Run the machine at idle.
Press the start throttle lock as described under the
heading Starting and stopping.
3
If the start throttle speed is too low (below 4000 rpm),
turn the adjuster screw A clockwise until the cutting
attachment starts to rotate. Then turn A clockwise a
further 1/2 turn.
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
4
If the start throttle speed is too high (above 6500 rpm),
turn the adjuster screw A anti-clockwise until the
cutting attachment stops. Then turn adjuster screw A
clockwise a further 1/2 turn.
4
Muffler
3
CAUTION! Some mufflers are fitted with a catalytic
converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.
1
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.
2
1
2
3
4
Air intake on the starter.
Fins on the flywheel.
Some mufflers are equipped with a special spark arrestor
screen. If your machine has this type of muffler, you
should clean the screen at least once a week.This is best
done with a wire brush.
Cooling fins on the cylinder.
Cylinder cover (directs cold air over the cylinder).
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.
On mufflers without a catalytic converter the screen
should be cleaned weekly, or replaced if necessary. On
mufflers fitted with a catalytic converter the screen should
be checked, and if necessary cleaned, monthly. If the
screen is damaged it should be replaced.
Air filter
If the screen is frequently blocked, this can be a sign that
the performance of the catalytic converter is impaired.
Contact your dealer to inspect the muffler. A blocked
screen will cause the machine to overheat and result in
damage to the cylinder and piston.
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.
CAUTION! Never use a machine with a defective muffler.
Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.
WARNING! Mufflers fitted with catalytic
converters get very hot during use and
!
remain so for some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin.
Remember the risk of fire!
30 – English
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MAINTENANCE
Cleaning the air filter
Spark plug
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water.
The spark plug condition is influenced by:
•
•
Incorrect carburetor 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 0.020 inch (0,5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
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.
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.
Winter use
Running problems can occur when using the machine in
the cold and snowy conditions caused by:
•
•
Too low engine temperature.
Icing of the air filter and carburetor.
Drive shaft
Special measures are therefore often required:
•
Partly mask the air inlet on the starter to increase the
working temperature of the engine.
•
Preheat the intake air to the carburettor by utilising the
heat from the muffler.
The drive shaft must be greased every three months
during full-time use. Contact your dealer if you are
uncertain about the procedure.
Temperature 5°C (41°F) or colder
•
Fit the cooling air duct with the arrow pointing to the
snow flake.
English – 31
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MAINTENANCE
•
•
Hot air is then supplied to the carburettor from the
muffler.
Fit a cover over the starter in snowy conditions.
IMPORTANT! The machine MUST be returned to its
standard design at temperatures warmer than 5°C
(41°F). Otherwise there is a risk of overheating resulting
in serious engine damage.
IMPORTANT! Any maintenance other than that
described in this manual must be carried out by your
servicing dealer (retailer).
IMPORTANT! Use only HUSQVARNA replacement
parts. Use of other brands of replacement parts can
cause damage to your unit or injury to the operator or
others.Your warranty does not cover damage or liability
caused by the use of accessories and/or attachments
not specifically recommended by HUSQVARNA.
32 – English
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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 manual. More
extensive work must be carried out by an authorized service workshop.
Daily
Weekly
Monthly
Maintenance
maintenance maintenance maintenance
Clean the outside of the machine.
X
X
Check that the harness is not damaged.
Make sure the throttle trigger lock and the throttle function correctly from a
safety point of view.
X
X
Check that the handle and handlebar are undamaged and secured
correctly.
Check that the stop switch works correctly.
Check that the cutting attachment does not rotate at idle.
Clean the air filter. Replace if necessary.
X
X
X
Check that the guard is undamaged and not cracked. Replace the guard if
it has been exposed to impact or is cracked.
X
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.
Check that the trimmer head is undamaged and not cracked. Replace the
trimmer head if necessary.
X
X
X
Check that the locking nut of the cutting equipment is tighten correctly.
Check that the locking screw is tightened when using a support cup with
bearings.
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
X
X
X
Check that there are no fuel leaks from the engine, tank or fuel lines.
Check the starter and starter cord.
Check that the vibration damping elements are not damaged.
Clean the outside of the spark plug.Remove it and check the electrode gap.
Adjust the gap to 0.5 mm (.020”), or replace the spark plug. Check that the
spark plug is fitted with a suppressor.
X
Clean the machine’s cooling system.
X
X
X
X
X
X
X
X
Clean or replace the spark arrestor screen on the muffler (only applies to
mufflers without a catalytic converter).
Clean the outside of the carburettor and the space around it.
Check that the bevel gear is filled three-quarters full with lubricant. Fill if
necessary using special grease.
Check that the safety release on the harness is not damaged and works.
Check the fuel filter from contamination and the fuel hose from cracks or
other defects. Replace if necessary.
Check all cables and connections.
Check the clutch, clutch springs and the clutch drum for wear. Replace if
necessary by an autorized service workshop.
Replace the spark plug. Check that the spark plug is fitted with a
suppressor.
X
Check and clean the spark arrestor screen on the muffler (only applies to
mufflers fitted with a catalytic converter).
X
Lubricate the drive shaft with the special grease.
Do this every three months.
Replace the vibration damping elements after each season, however, at
least once a year.
English – 33
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TECHNICAL DATA
Technical data
345 FR
545 RX
545 RXT
Motor
Cylinder displacement, cu.in/cm3
Cylinder bore, inch/mm
Stroke, inch/mm
2,79/45,7
1,65/42
1,30/33
2700
2,79/45,7
1,65/42
1,30/33
2700
2,79/45,7
1,65/42
1,30/33
2700
Idle speed, rpm
Recommended max. speed, rpm
Speed of output shaft, rpm
Max. engine output, acc. to ISO 8893, kW/ rpm
Catalytic converter muffler
Ignition system
12200
8800
12200
8800
12200
8800
2,1/9000
No
2,1/9000
No
2,1/9000
No
Spark plug
NGK CMR6H
0.02/0,5
NGK CMR6H
0.02/0,5
NGK CMR6H
0.02/0,5
Electrode gap, inch/mm
Fuel and lubrication system
Fuel tank capacity, US pint/litre
Weight
1,9/0,9
1,9/0,9
1,9/0,9
Weight without fuel, cutting attachment and guard, Lbs/
kg
18,7/8,5
19,2/8,7
18,7/8,5
Sound levels
(see note 1)
Equivalent sound pressure level at the operator’s ear,
measured according to ISO 22868, dB(A):
Equipped with trimmer head (original)
Equipped with grass blade (original)
Equipped with saw blade (original)
Vibration levels
100
100
100
100
100
-
100
100
-
(see note 2)
Equivalent vibration levels (ahv,eq) at handles,
measured according to ISO 22867, m/s2
Equipped with trimmer head (original), left/right
Equipped with grass blade (original), left/right
Equipped with saw blade (original), left/right
3,6/3,8
3,3/3,0
3,8/3,2
3,2/2,9
2,9/2,4
-
3,2/2,9
2,9/2,4
-
NOTE! This spark ignition system complies with the Canadian ICES-002 standard.
Note 1: Reported data for equivalent sound pressure level for the machine has a typical statistical dispersion (standard
deviation) of 1 dB (A).
Note 2: Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1 m/s2.
34 – English
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TECHNICAL DATA
545 FX
545 FXT
Motor
Cylinder displacement, cu.in/cm3
Cylinder bore, inch/mm
Stroke, inch/mm
2,79/45,7
1,65/42
1,3/33
2700
2,79/45,7
1,65/42
1,3/33
2700
Idle speed, rpm
Recommended max. speed, rpm
Speed of output shaft, rpm
Max. engine output, acc. to ISO 8893, kW/ rpm
Catalytic converter muffler
Ignition system
13000
10100
2,2/9000
No
13000
10100
2,2/9000
No
Spark plug
NGK CMR6H
0.02/0,5
NGK CMR6H
0.02/0,5
Electrode gap, inch/mm
Fuel and lubrication system
Fuel tank capacity, US pint/litre
Weight
1,9/0,9
1,9/0,9
Weight without fuel, cutting attachment and guard, Lbs/
kg
17,9/8,1
18,3/8,3
Sound levels
(see note 1)
Equivalent sound pressure level at the operator’s ear,
measured according to ISO 22868, dB(A):
Equipped with trimmer head (original)
Equipped with grass blade (original)
Equipped with saw blade (original)
Vibration levels
-
-
-
-
99
99
(see note 2)
Equivalent vibration levels (ahv,eq) at handles,
measured according to ISO 22867, m/s2
At idle, left/right handles, max.:
-
-
At max. speed, left/right handles, min.:
At max. speed, left/right handles, max.:
-
-
2,0/3,2
2,0/3,2
NOTE! This spark ignition system complies with the Canadian ICES-002 standard.
Note 1: Reported data for equivalent sound pressure level for the machine has a typical statistical dispersion (standard
deviation) of 1 dB (A).
Note 2: Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1 m/s2.
English – 35
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TECHNICAL DATA
545 RX, 545 RXT
Approved accessories
Type
Cutting attachment guard, Art. no.
Centre hole in blades/cutters, Ø 25,4
mm
Output shaft thread M12
Multi 255-3 (Ø 255 3 teeth)
Multi 275-4 (Ø 275 4 teeth)
Multi 300-3 (Ø 300 3 teeth)
Maxi XS 200-22 (Ø 200 22 teeth)
Scarlet 200-22 (Ø 200 22 teeth)
537 28 85-01
537 28 85-01
537 28 85-01
537 31 09-01
537 31 09-01
Grass blade/grass cutter
Saw blade
Tricut Ø 300 mm (Separate blades
have part number 531 01 77-15)
Plastic blades
537 28 85-01
Trimmy S
503 95 43-01
503 95 43-01
503 95 43-01
503 95 43-01
Trimmy S II (Ø 2.4 - 3.3 mm cord)
Auto 55 (Ø 2.7 - 3.3 mm cord)
T45x (Ø 2.7 - 3.3 mm cord)
Fixed
Trimmer head
Support cup
With ball bearing
545 FX, 545 FXT
Approved accessories
Type
Cutting attachment guard, Art. no.
Centre hole in blades/cutters, Ø 20
mm
Output shaft thread M12
Multi 255-3 (Ø 255 3 teeth)
Multi 275-4 (Ø 275 4 teeth)
Multi 300-3 (Ø 300 3 teeth)
Maxi XS 200-22 (Ø 200 22 teeth)
Scarlet 200-22 (Ø 200 22 teeth)
Scarlet 225-24 (Ø 225 24 teeth)
537 29 74-01
537 29 74-01
537 29 74-01
574 53 26-01
574 53 26-01
574 50 67-02
Grass blade/grass cutter
Saw blade
Tricut Ø 300 mm (Separate blades
have part number 531 01 77-15)
Plastic blades
537 29 74-01
Trimmy S
537 29 73-01
537 29 73-01
537 29 73-01
537 29 73-01
Trimmy S II (Ø 2.4 - 3.3 mm cord)
Auto 55 (Ø 2.7 - 3.3 mm cord)
T45x (Ø 2.7 - 3.3 mm cord)
Fixed
Trimmer head
Support cup
With ball bearing
36 – English
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TECHNICAL DATA
345 FR
Approved accessories
Type
Cutting attachment guard, Art. no.
Centre hole in blades/cutters, Ø 25,4
mm
Output shaft thread M12
Multi 255-3 (Ø 255 3 teeth)
Multi 275-4 (Ø 275 4 teeth)
Multi 300-3 (Ø 300 3 teeth)
Maxi XS 200-22 (Ø 200 22 teeth)
Scarlet 200-22 (Ø 200 22 teeth)
537 28 85-01
537 28 85-01
537 28 85-01
537 31 09-01
537 31 09-01
Grass blade/grass cutter
Saw blade
Tricut Ø 300 mm (Separate blades
have part number 531 01 77-15)
Plastic blades
537 28 85-01
Trimmy S II (Ø 2.4 - 3.3 mm cord)
Auto 55 (Ø 2.7 - 3.3 mm cord)
T45x (Ø 2.7 - 3.3 mm cord)
Fixed
503 95 43-01
503 95 43-01
503 95 43-01
Trimmer head
Support cup
With ball bearing
English – 37
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FEDERAL EMISSION CONTROL WARRANTY STATEMENT
charge to the owner at an approved Husqvarna Forest &
YOUR WARRANTY RIGHTS AND
OBLIGATIONS
Garden servicing dealer. If you have any questions
regarding your warranty rights and responsibilities, you
should contact your nearest authorized servicing dealer
or call Husqvarna Forest & Garden at 1-800-487-5951 or
WARRANTY PERIOD Any warranted part which is not
scheduled for replacement as required maintenance, or
which is scheduled only for regular inspection to the effect
of “repair or replace as necessary” shall be warranted for
2 years. Any warranted part which is scheduled for
replacement as required maintenance shall be warranted
for the period of time up to the first scheduled
replacement point for that part.
The EPA (The US Environmental Protection Agency),
Environment Canada and Husqvarna Forest & Garden
are pleased to explain the emissions control system
warranty on your 2009 and later small nonroad engine. In
U.S. and Canada, new small nonroad engines must be
designed, built and equipped to meet the federal stringent
anti-smog standards. Husqvarna Forest & Garden must
warrant the emission control system on your small
nonroad engine for the period of time listed below
provided there has been no abuse, neglect or improper
maintenance of your unit.Your emission control system
includes Parts such as the carburetor and the ignition
system.Where a warrantable condition exists, Husqvarna
Forest & Garden will repair your small nonroad engine at
no cost to you. Expenses covered under warranty include
diagnosis, parts and labor.
DIAGNOSIS The owner shall not be charged for
diagnostic labor which leads to the determination that a
warranted part is defective, if the diagnostic work is
performed at an approved Husqvarna Forest & Garden
servicing dealer.
CONSEQUENTIAL DAMAGES Husqvarna Forest &
Garden may be liable for damages to other engine
components caused by the failure of a warranted part still
under warranty.
MANUFACTURER′S WARRANTY COVERAGE
The 2009 and later small nonroad engines are warranted
for two years. If any emission related part on you engine
(as listed above) is defective, the part will be repaired or
replaced by Husqvarna Forest & Garden.
WHAT IS NOT COVERED
All failures caused by abuse, neglect or improper
maintenance are not covered.
ADD -ON OR MODIFIED PARTS
OWNER′S WARRANTY RESPONSIBILITIES
As the small nonroad engine owner, you are responsible
for the performance of the required maintenance listed in
your Operator′s Manual. Husqvarna Forest & Garden
recommends that you retain all receipts covering
maintenance on your small nonroad engine, but
The use of add-on or modified parts can be grounds for
disallowing a warranty claim.Husqvarna Forest & Garden
is not liable to cover failures of warranted parts caused by
the use of add-on or modified parts.
Husqvarna Forest & Garden cannot deny warranty solely
for the lack of receipts or for your failure to ensure the
performance of all scheduled maintenance. As the small
nonroad engine owner, you should, however, be aware
that Husqvarna Forest & Garden may deny you warranty
coverage if your small nonroad engine or a part of it has
failed due to abuse, neglect, improper maintenance,
unapproved modifications or the use of parts not made or
approved by the original equipment manufacturer.You are
responsible for presenting your small nonroad engine to a
Husqvarna Forest & Garden authorized servicing dealer
as soon as a problem exists.The warranty repairs should
be completed in a reasonable amount of time, not to
exceed 30 days. If you have any questions regarding your
warranty rights and responsibilities, you should contact
your nearest authorized servicing dealer or call
HOW TO FILE A CLAIM
If you have any questions regarding your warranty rights
and responsibilities, you should contact your nearest
authorized servicing dealer or call Husqvarna Forest &
WHERE TO GET WARRANTY SERVICE
Warranty services or repairs shall be provided at all
Husqvarna Forest & Garden authorized servicing dealers.
MAINTENANCE, REPLACEMENT AND
REPAIR OF EMISSION-RELATED PARTS
Any Husqvarna Forest & Garden approved replacement part
used in the performance of any warranty maintenance or
repairs on emission-related parts, will be provided without
charge to the owner if the part is under warranty.
Husqvarna Forest & Garden at 1-800-487-5951 or visit
EMISSION CONTROL WARRANTY PARTS LIST
WARRANTY COMMENCEMENT DATE
The warranty period begins on the date small nonroad
engine is delivered.
1
2
3
Carburetor and internal parts
Intake pipe, airfilter holder and carburetor bolts.
Airfilter and fuelfilter covered up to maintenance
schedule.
LENGTH OF COVERAGE
4
Ignition System
Husqvarna Forest & Garden warrants to the initial owner
and each subsequent purchaser that the engine is free
from defects in materials and workmanship which cause
the failure of a warranted part for a period of two years.
1Spark Plug, covered up to maintenance schedule
2Ignition Module
5
Muffler with catalytic converter
WHAT IS COVERED
REPAIR OR REPLACEMENT OF PARTS Repair or
replacement of any warranted part will be performed at no
MAINTENANCE STATEMENT
The owner is responsible for the performance of all required
maintenance, as defined in the operator’s manual.
38 – English
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Trimmy SII
1
2
7,0 m
23'
12 cm
5"
~ 3,5 m
11'
3
4
~ 15 cm
6'
7
5
6
"Clic"
8
9
35-50 NM
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Auto 55
1
2
3
>1,1 Kw
<1,1 Kw
1.)
2.)
4
5
2,7 mm - 9,0 m
3,0 mm - 7,5 m
3,3 mm - 6,0 m
15 cm
6"
8
7
6
15 cm
6"
15 cm
6"
15 cm
6"
10
11
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T45, T45x
1
2
3
10 m
32'
10 cm
4"
4,3 m
14'
4
5
7
6
8
15 cm
6"
"Clic"
9
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Original instructions
1155058-95
´®z+W%y¶5'¨
´®z+W%y¶5'¨
2012-08-10
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