Husqvarna Brush Cutter 535RX User Manual

Operator’s manual  
535RX, 535RXT  
Please read the operator’s manual carefully and make sure you understand the instructions  
before using the machine.  
English  
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CONTENTS  
Contents  
Note the following before  
starting:  
KEY TO SYMBOLS  
Symbols ................................................................  
CONTENTS  
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.  
Contents ...............................................................  
Note the following before starting: ........................  
INTRODUCTION  
WARNING! Long-term exposure to noise  
can result in permanent hearing  
impairment. So always use approved  
hearing protection.  
Dear customer! .....................................................  
WHAT IS WHAT?  
5
!
What is what on the brush cutter? ........................  
GENERAL SAFETY PRECAUTIONS  
Important ..............................................................  
Personal protective equipment .............................  
Machines safety equipment .................................  
WARNING! 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.  
!
Cutting equipment ................................................ 10  
ASSEMBLY  
Assembling the handlebar and throttle ................. 13  
Assembling the cutting equipment ....................... 13  
Fitting the guard extension ................................... 13  
Fitting a blade guard, grass blade and grass cutter 14  
Fitting the blade guard and saw blade .................. 14  
Fitting other guards and cutting attachments ....... 15  
Adjusting the harness and brush cutter ................ 16  
Standard harness ................................................. 16  
Triobalance harness ............................................. 16  
FUEL HANDLING  
Your warranty may not cover damage or  
liability caused by the use of non-  
authorized accessories or replacement  
parts.  
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 ............................................................ 18  
Fuel ...................................................................... 18  
Fueling .................................................................. 19  
STARTING AND STOPPING  
Check before starting ........................................... 20  
Starting and stopping ........................................... 20  
WORKING TECHNIQUES  
General working instructions ................................ 22  
MAINTENANCE  
Carburetor ............................................................ 27  
Muffler .................................................................. 28  
Cooling system ..................................................... 28  
Bevel gear ............................................................ 28  
Air filter ................................................................. 29  
Spark plug ............................................................ 29  
Maintenance schedule ......................................... 30  
TECHNICAL DATA  
The Emissions Compliance Period referred to on the  
Emission Compliance label indicates the number of  
operating hours for which the engine has been shown to  
meet Federal and Californian emissions requirements.  
The engine exhaust from this product  
contains chemical known to the State  
of California to cause cancer, birth  
defects or other reproductive harm.  
Technical data ...................................................... 31  
FEDERAL AND CALIFORNIA EMISSIONS  
CONTROL WARRANTY STATEMENT  
YOUR WARRANTY RIGHTS AND OBLIGATIONS 33  
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  
operators manual as a valuable document. By following itscontent (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 operators 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?  
8
17  
3
30  
7
533RX  
2
1
9
17  
31  
4
10  
29  
5
14  
33  
535RXT  
11  
16  
18  
20  
19  
12  
6
1
13  
28  
22  
21  
33  
4
15  
21  
25  
24  
4
32  
26  
27  
23  
What is what on the brush cutter?  
1
2
3
4
5
6
7
8
9
Trimmer head  
Grease filler cap, bevel gear  
Bevel gear  
18 Locking nut  
19 Support flange  
20 Support cup  
21 Drive disc  
22 Blade  
Cutting attachment guard  
Shaft  
Handlebar  
23 Socket spanner  
24 Operator’s manual  
25 Transport guard  
26 Allen key  
Throttle control  
Stop switch  
Throttle lockout  
10 Suspension  
11 Cylinder cover  
12 Starter handle  
13 Fuel tank  
27 Locking pin  
28 Harness  
29 Spark plug cap and spark plug  
30 Start throttle button  
14 Choke control  
15 Air purge  
31 Adjusting screw for throttle cable  
32 Spark plug spanner  
16 Air filter cover  
17 Handle adjustment  
33 Guard extension  
English – 5  
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GENERAL SAFETY PRECAUTIONS  
Important  
WARNING! Never allow children to use or  
be in the vicinity of the machine. As the  
machine is equipped with a spring-  
loaded stop switch and can be started by  
low speed and force on the starter  
handle, even small children under some  
circumstances can produce the force  
necessary to start the machine.This can  
mean a risk of serious personal injury.  
Therefore remove the spark plug cap  
when the machine is not under close  
supervision.  
!
IMPORTANT!  
The machine is only designed for trimming grass, grass  
clearing and/or forestry clearing.  
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”.  
Personal protective equipment  
Never use a machine that has been modified in any way  
from its original specification.  
IMPORTANT!  
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.  
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.  
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.  
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.  
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.  
!
Do an overall inspection of the machine before use, see  
maintenance schedule.  
HELMET  
A helmet should be worn if the trees being cleared are  
taller than 2 m.  
WARNING! This machine produces an  
electromagnetic field during operation.  
This field may under some  
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.  
!
HEARING PROTECTION  
Wear hearing protection that provides adequate noise  
reduction.  
WARNING! Running an engine in a  
confined or badly ventilated area can  
result in death due to asphyxiation or  
carbon monoxide poisoning.  
!
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.  
6 – English  
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GENERAL SAFETY PRECAUTIONS  
GLOVES  
Throttle lockout  
Gloves should be worn when necessary, e.g., when fitting  
cutting attachments.  
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.  
BOOTS  
Wear boots with steel toe-caps and non-slip sole.  
A
B
CLOTHING  
Make sure the throttle control is locked at the idle setting  
when the throttle lockout is released.  
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.  
Press the throttle lockout and make sure it returns to its  
original position when you release it.  
Machines safety equipment  
This section describes the machines 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.  
Check that the throttle control and throttle lockout move  
freely and that the return springs work properly.  
IMPORTANT! All servicing and repair work on the  
machine requires special training.This is especially true  
of the machines 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.  
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  
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.  
!
English 7  
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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.  
Stop switch  
Use the stop switch to switch off the engine.  
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 machines vibration damping system reduces the  
transfer of vibration between the engine unit/cutting  
equipment and the machines handle unit.  
Start the engine and make sure the engine stops when  
you move the stop switch to the stop setting.  
Cutting attachment guard  
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.  
Regularly check the vibration damping units for cracks or  
deformation.  
Check that the guard is undamaged and not cracked.  
Replace the guard if it has been exposed to impact or is  
cracked.  
535RX, 535RXT  
Check that the vibration damping element is undamaged  
and securely attached.  
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.  
8 – English  
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GENERAL SAFETY PRECAUTIONS  
a spark arrestor screen. Check whether the muffler on  
your machine is fitted with this kind of screen.  
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.  
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 brush  
cutter.  
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.  
Certain harnesses also have a quick release fitted to the  
support hook.  
Regularly check that the muffler is securely attached to  
the machine.  
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. A muffler  
fitted with a catalytic converter is also designed to reduce  
harmful exhaust gases.  
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.  
In countries that have a warm and dry climate there is a  
significant risk of fire.We therefore fit certain mufflers with  
English 9  
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GENERAL SAFETY PRECAUTIONS  
Cutting equipment  
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.  
This section describes how to choose and maintain your  
cutting equipment in order to:  
!
Reduce the risk of blade thrust.  
Remember the risk of fire!  
Obtain maximum cutting performance.  
Extend the life of cutting equipment.  
WARNING! The inside of the muffler  
contain chemicals that may be  
carcinogenic. Avoid contact with these  
elements in the event of a damaged  
muffler.  
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.  
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!  
Keep the teeth of the blade correctly sharpened! Follow  
our recommendations. Also refer to the instructions on  
the blade packaging.  
Maintain the correct blade setting! Follow our  
instructions and use the recommended file gauge.  
Locking 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.  
A locking nut is used to secure some types of cutting  
attachment.  
WARNING! Using an incorrect cutting  
attachment or an incorrectly sharpened  
blade increases the risk of blade thrust.  
!
Cutting equipment  
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.  
Saw blades are intended for cutting fibrous types of wood.  
Grass blades and grass cutters are intended for cutting  
coarse grass.  
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.  
A trimmer head is intended for trimming grass.  
10 – English  
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GENERAL SAFETY PRECAUTIONS  
General rules  
Sharpen all edges equally to maintain the balance of  
the blade.  
Only use cutting attachments with the guards we  
recommend! See the chapter on Technical data.  
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.  
!
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.  
Sharpening the saw blade  
See the cutting attachment packaging for correct  
sharpening instructions.  
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.  
A correctly sharpened blade is essential for working  
efficiently and to avoid unnecessary wear to the blade and  
brush cutter.  
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 cutters 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  
See the cutting attachment packaging for correct  
sharpening instructions. Sharpen blades and cutters  
using a single-cut flat file.  
English 11  
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GENERAL SAFETY PRECAUTIONS  
round file. The top edges must be filed down by the  
same amount for all the teeth.  
Adjust the blade setting. This should be 1 mm.  
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.  
12 – English  
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ASSEMBLY  
Assembling the handlebar and  
throttle  
Assembling the cutting  
equipment  
WARNING!  
!
Remove the screw at the rear of the throttle handle.  
When fitting the cutting attachment it is  
Slide the throttle handle onto the right side of the  
handlebar, (see diagram).  
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.  
Align the screw hole in the throttle handle with the hole  
in the handlebar.  
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.  
!
Refit the screw in the hole in the rear of the throttle  
handle.  
Screw the screw through the handle and handlebar.  
Tighten it.  
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.  
RXT  
RX  
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.  
Fit the mounting components as shown.  
Loosely tighten the four screws. (R)  
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.  
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.  
Tighten the knob.  
English 13  
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ASSEMBLY  
The guard extension is removed easily using the spark  
plug spanner, see illustration.  
the spanner in the opposite direction to the direction  
of rotation (Caution! left-hand thread).  
Fitting a blade guard, grass blade  
and grass cutter  
Fitting the blade guard and saw  
blade  
G
F
E
D
K
J
B
C
A
H
I
A
L
Hook the blade guard/combination guard (A) onto the  
fitting on the shaft and secure with the bolt.  
CAUTION! Ensure that the guard extension is  
removed.  
A
Use the recommended blade guard. See the  
Technical data section.  
Remove the mounting plate (H).Fit the adapter (I) and  
bracket (J) with the two screws (K) as shown. Fit the  
blade guard (A) to the adapter using the 4 screws (L)  
as shown.  
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.  
CAUTION! Use the recommended blade guard. See  
the Technical data section.  
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.  
G
F
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  
D
B
C
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.  
14 – English  
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ASSEMBLY  
Insert the locking pin (C) in the hole to lock the shaft.  
Place the locking pin in the groove on the screw head  
and tighten. See diagram.  
Place the blade (D) 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).  
L
M
C
A
Fit the drive disc (B) on the output shaft.  
H
A
B
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 operate the socket spanner when  
loosening or tightening the nut.  
C
M
L
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.  
H
H
Fitting other guards and cutting  
attachments  
To dismantle, follow the instructions in the reverse  
order.  
Fit the trimmer guard/combination guard (A) intended  
for use with the trimmer head/plastic blades.  
CAUTION! Ensure that the guard extension is fitted.  
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).  
English 15  
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ASSEMBLY  
height using the strap on the harness for the support  
hook.  
Adjusting the harness and brush  
cutter  
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.  
!
Standard harness  
2
Grass clearing  
The machine should be supported in a harness when  
grass clearing so that the cutting equipment is parallel to  
the ground.  
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.  
Triobalance harness  
Spreading the load on your shoulders  
Quick release  
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.  
Push down the red release lever to release the machine  
from the harness.  
Adjusting the harness  
Correct height  
1
Tighten the hip strap so that it sits securely.  
1
Forestry clearing  
The machine should be supported in a harness when  
forestry clearing so that the cutting equipment is angled  
slightly forwards in relation to the ground. Adjust the  
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ASSEMBLY  
2
Tighten the chest strap under your left arm so that it  
fits closely around your body.  
Correct balance  
1
Forestry clearing  
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.  
3
Adjust the shoulder strap to distribute the load evenly  
across your shoulders. Press downwards on the  
suspension hook to load the harness.  
2
Grass clearing  
Let the blade balance at a comfortable cutting height, i.e.  
close to the ground.  
4
Adjust the height of the suspension hook as described  
in the instructions for the standard harness. (Forestry  
clearing)  
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.  
A
B
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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.  
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.  
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.  
Mixing ratio  
WARNING!Take care when handling fuel.  
Bear in mind the risk of fire, explosion  
and inhaling fumes.  
!
1:50 (2%) with HUSQVARNA two-stroke oil.  
Gasoline, litre  
Two-stroke oil, litre  
2% (1:50)  
0,10  
Fuel  
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.  
5
10  
0,20  
15  
0,30  
20  
0,40  
US gallon  
US fl. oz.  
2 1/2  
WARNING! Fuel and fuel fumes are  
1
highly inflammable and can cause  
!
2 1/2  
5
6 1/2  
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.  
12 7/8  
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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.  
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  
!
If you have spilled fuel on it. Wipe off the spillage and  
allow remaining fuel to evaporate.  
use.This also applies during idling. Be  
aware of the fire hazard, especially when  
working near flammable substances and/  
or vapours.  
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.  
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STARTING AND STOPPING  
trimmer guard if they have been exposed to impact or  
are cracked.  
Check before starting  
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.  
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.  
Starting and stopping  
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.  
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.  
!
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.  
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 blade guard is not damaged or  
cracked. Replace the blade guard if it is exposed to  
impact or is cracked.  
Starting  
Choke: Set the choke control in the choke position.  
Check that the trimmer head and trimmer guard are  
not damaged or cracked.Replace the trimmer head or  
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STARTING AND STOPPING  
Primer bulb: Press the air purge repeatedly until fuel  
begins to fill the bulb. The bulb need not be completely  
filled.  
For throttle handles with a start throttle  
lock:  
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.  
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.  
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  
Stopping  
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.  
Stop the engine by switching off the ignition.  
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! The stop switch automatically returns to the  
start position. In order to prevent unintentional starting,  
the spark plug cap must be removed from the spark plug  
when assembling, checking and/or performing  
maintenance.  
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.  
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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  
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WORKING TECHNIQUES  
Start at whichever end of the area is easiest, and clear  
an open space from which to work.  
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.  
!
Work systematically to and fro across the area,  
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.  
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.  
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.  
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.  
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.  
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WORKING TECHNIQUES  
To fell a tree forwards, the bottom of the tree should be  
pulled backwards. Pull the blade backwards with a  
quick, firm movement.  
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.  
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  
wood.Small stems require more pressure, while large  
stems require less pressure.  
To fell to the left, the bottom of the tree should be  
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.  
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  
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WORKING TECHNIQUES  
still difficult to gain access, cut the stems high up and  
Stop the engine, unclip the harness and place the  
let them fall. This will reduce the risk of jamming.  
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.  
Grass clearing using a grass blade  
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.  
Grass blades and grass cutters must not be used on  
woody stems.  
Reduce the risk of damaging plants by shortening the  
cord to 10-12 cm and reducing the engine speed.  
A grass blade is used for all types of tall or coarse  
grass.  
Clearing  
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 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.  
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.  
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.  
Try to work rhythmically. Stand firmly with your feet  
apart. Move forward after the return stroke and stand  
firmly again.  
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.  
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.  
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WORKING TECHNIQUES  
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.  
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MAINTENANCE  
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.  
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.  
Adjustment of the idle speed  
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.  
Function  
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.  
T
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  
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.  
H = High speed jet  
!
T = Idle adjustment screw  
L
H
Adjusting the start throttle speed  
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 (4 mm Allen screw) to increase or decrease the  
start throttle speed.  
T
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.  
5 mm  
Proceed as follows:  
Basic setting  
1
2
Run the machine at idle.  
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  
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.  
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.  
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MAINTENANCE  
4
If the start throttle speed is too high, turn the adjuster  
CAUTION! Never use a machine with a defective muffler.  
screw A anticlockwise until the cutting attachment  
stops.Then turn adjuster screw A clockwise a further  
1/2 turn.  
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.  
!
WARNING! If the idle speed cannot be  
adjusted so that the cutting attachment  
!
Remember the risk of fire!  
stops, contact your dealer/service  
workshop. Do not use the machine until  
it has been correctly adjusted or  
repaired.  
Cooling system  
Muffler  
To keep the working temperature as low as possible the  
machine is equipped with a cooling system.  
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.  
3
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
The cooling system consists of:  
1
2
3
Air intake on the starter.  
Cooling fins on the cylinder.  
Cylinder cover (directs cold air over the cylinder).  
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. 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. 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.  
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.  
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.  
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MAINTENANCE  
use common engine oil.This would drain through the filter  
quite quickly and collect in the bottom.  
Air filter  
The air filter must be regularly cleaned to remove dust  
and dirt in order to avoid:  
Carburettor malfunctions  
Starting problems  
Spark plug  
Loss of engine power  
Unnecessary wear to engine parts  
Excessive fuel consumption.  
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.  
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.  
If the machine is used in dusty conditions the air filter  
should be soaked in oil. See instructions under the  
heading Oiling the air filter.  
CAUTION! Always use the recommended spark plug  
type! Use of the wrong spark plug can damage the piston/  
cylinder.  
Oiling the air filter  
Note: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.  
Always use HUSQVARNA filter oil, art. no. 531 00 92-48.  
The filter oil contains a solvent to make it spread evenly  
through the filter.You should therefore avoid skin contact.  
Put the filter in a plastic bag and pour the filter oil over it.  
Knead the plastic bag to distribute the oil. Squeeze the  
excess oil out of the filter inside the plastic bag and pour  
off the excess before fitting the filter to the machine.Never  
English 29  
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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
X
Check that the harness is not damaged.  
Check that the suspension ring is not damaged.  
Make sure the throttle trigger lock and the throttle function correctly from  
a safety point of view.  
X
X
X
Check that the stop switch works correctly.  
Check that the handle and handlebar are undamaged and secured  
correctly.  
Check that the cutting attachment does not rotate at idle.  
Clean the air filter. Replace if necessary.  
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
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.  
Check that the locking nut of the cutting equipment is tighten correctly.  
Check that nuts and screws are tight.  
X
X
X
Check that there are no fuel leaks from the engine, tank or fuel lines.  
Check that the transport guard for the blade is intact and that it can be  
secured correctly.  
X
Check the starter and starter cord.  
X
X
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 (.20”), 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
X
Check and clean the spark arrestor screen on the muffler (only applies  
to mufflers fitted with a catalytic converter).  
30 – English  
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TECHNICAL DATA  
Technical data  
Technical data  
535RX  
535RXT  
Motor  
Cylinder displacement, cu.in/cm3  
Cylinder bore, inch/mm  
Stroke, inch/mm  
2,11/34,6  
2,11/34,6  
1,50/38,0  
1,20/30,5  
2900  
1,50/38,0  
1,20/30,5  
2900  
Idle speed, rpm  
Recommended max. speed, rpm  
Speed of output shaft, rpm  
Max. engine output, acc. to ISO 8893, kW/ rpm  
Catalytic converter muffler  
Speed-regulated ignition system  
Ignition system  
11500  
8220  
11500  
8220  
1,6/8400  
Yes  
1,6/8400  
Yes  
Yes  
Yes  
Spark plug  
Champion RCJ 6Y Champion RCJ 6Y  
Electrode gap, inch/mm  
Fuel and lubrication system  
Fuel tank capacity, US pint/litre  
Weight  
0,02/0,5  
1,27/0,6  
13,4/6,1  
0,02/0,5  
1,27/0,6  
6,2  
Weight without fuel, cutting attachment and guard, Lbs/kg  
Sound levels  
(see note 1)  
Equivalent sound pressure level at the users ear, measured  
according to ANSI B175.3-1997, dB(A), min/max:  
Equipped with trimmer head (original)  
Equipped with grass blade (original)  
Vibration levels  
95  
95  
95  
96  
(see note 2)  
Vibration levels at handles, measured according to ANSI B175.3-  
1997, m/s2  
Equipped with trimmer head (original), left/right  
Equipped with grass blade (original), left/right  
3,0/3,4  
3,4/4,1  
2,4/3,1  
2,5/2,7  
NOTE! This spark ignition system complies with the Canadian standard ICES-002.  
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 – 31  
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TECHNICAL DATA  
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)  
Grass 255-4 (Ø 255 4 teeth)  
Multi 275-4 (Ø 275 4 teeth)  
Multi 300-3 (Ø 300 3 teeth)  
Scarlet 200-22 (Ø 200 22 teeth)  
537 33 16-01  
537 33 16-01  
537 33 16-01  
537 33 16-01  
537 38 77-01  
Grass blade/grass cutter  
Saw blade  
Tricut Ø 300 mm (Separate blades  
have part number 531 01 77-15)  
Plastic blades  
537 33 16-01 / 537 34 94-01  
T35, T35x (Ø 2.4 - 3.0 mm cord)  
S35 (Ø 2.4 - 3.0 mm cord)  
T45x (Ø 2.7 - 3.3 mm cord)  
Auto 55 (Ø 2.7 - 3.3 mm cord)  
Trimmy S II (Ø 2.4 - 3.3 mm cord)  
503 89 01-02  
537 33 16-01 / 537 34 94-01  
537 33 16-01 / 537 34 94-01  
537 33 16-01 / 537 34 94-01  
537 33 16-01 / 537 34 94-01  
537 33 16-01 / 537 34 94-01  
-
Trimmer head  
Support cup  
32 – English  
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FEDERAL AND CALIFORNIA EMISSIONS CONTROLWARRANTY STATEMENT  
WARRANTY COMMENCEMENT DATE  
YOUR WARRANTY RIGHTS AND  
OBLIGATIONS  
The warranty period begins on the date the engine or  
equipment is delivered to an ultimate purchaser.  
The EPA (U.S. Environmental Protection Agency), CARB  
LENGTH OF COVERAGE  
(California Air Resources Board), Environment Canada  
and Husqvarna Forest & Garden are pleased to explain  
the emissions control system’s warranty on your 2009 and  
later small off-road engine. In U.S. and Canada, new  
equipment that use small off-road engines must be  
designed, built, and equipped to meet the applicable  
Federal or Californian stringent anti-smog standards.  
Husqvarna Forest & Garden must warrant the emissions  
control system on your small off-road engine for the  
period listed below provided there has been no abuse,  
neglect or improper maintenance of your equipment.Your  
emissions control system may include parts such as the  
carburetor, ignition system, catalytic converter, fuel tank,  
filters and other associated components. Also, included  
may be hoses, belts, connectors, sensors, and other  
emission-related assemblies. Where a warrantable  
condition exists, Husqvarna Forest & Garden will repair  
your small off-road engine at no cost to you including  
diagnosis, parts and labor.  
Husqvarna Forest & Garden warrants to the ultimate  
purchaser and each subsequent owner that the engine or  
equipment is designed, built, and equipped so as to  
conform with all applicable regulations adopted by EPA  
and CARB, and is free from defects in materials and  
workmanship that causes the failure of a warranted part  
for a period of two years.  
WHAT IS COVERED  
REPAIR OR REPLACEMENT OF PARTS Repair or  
replacement of any warranted part under the warranty  
must be performed at no charge to the owner at a  
warranty station. Warranty services or repairs will be  
provided at all Husqvarna Forest & Garden distribution  
centers that are franchised to service the subject engines.  
Throughout the emissions warranty period of two years,  
Husqvarna Forest & Garden must maintain a supply of  
warranted parts sufficient to meet the expected demand  
for such parts.  
MANUFACTURERS WARRANTY  
COVERAGE  
WARRANTY PERIOD Any warranted part that is  
scheduled for replacement as required in the  
The emissions control system is warranted for two years.  
If any emissions-related part on your equipment is  
defective, the part will be repaired or replaced by  
Husqvarna Forest & Garden.  
maintenance schedule, is warranted for the period of time  
prior to the first scheduled replacement point for that part.  
If the part fails prior to the first scheduled replacement,  
the part will be repaired or replaced by Husqvarna Forest  
& Garden at no cost. Any such part repaired or replaced  
under warranty is warranted for the remainder of the  
period prior to the first scheduled replacement point for  
the part. Any warranted part that is not scheduled for  
replacement as required in the maintenance schedule, is  
warranted for two years. If any such part fails during the  
period of warranty coverage, it will be repaired and  
replaced by Husqvarna Forest & Garden at no cost. Any  
such part repaired or replaced under the warranty is  
warranted for the remaining warranty period. Any  
warranted part that is scheduled only for regular  
inspection in the maintenance schedule will be warranted  
for a period of two years. A statement in such written  
instructions to the effect of ”repair or replace as  
necessary” will not reduce the period of warranty  
coverage. Any such part repaired or replaced under  
warranty will be warranted for the remaining warranty  
period.  
OWNERS WARRANTY  
RESPONSIBILITIES  
As the small off-road engine owner, you are  
responsible for 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  
off-road engine, but Husqvarna Forest & Garden  
cannot deny warranty solely for the lack of receipts or  
your failure to ensure the performance of all  
scheduled maintenance.  
As the small off-road engine owner, you should  
however be aware that Husqvarna Forest & Garden  
may deny you warranty coverage if your small off-road  
engine or a part has failed due to abuse, neglect, or  
improper maintenance or unapproved modifications.  
You are responsible for presenting your small off-road  
engine to a Husqvarna Forest & Garden distribution  
center or service center as soon as the 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  
coverage, you should contact Husqvarna Forest &  
Garden at 1-800-487-5951 or visit  
DIAGNOSIS The owner must not be charged for  
diagnostic labor that leads to the determination that a  
warranted part is in fact defective, provided that such  
diagnostic work is performed at a warranty station.  
CONSEQUENTIAL DAMAGES Husqvarna Forest &  
Garden is liable for damages to other engine components  
proximately caused by a failure under warranty of any  
warranted part.  
English – 33  
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FEDERAL AND CALIFORNIA EMISSIONS CONTROLWARRANTY STATEMENT  
EMISSION WARRANTY PARTS LIST  
1
2
3
Carburetor and internal parts  
Intake pipe, airfilter holder and carburetor bolts.  
Airfilter and fuelfilter covered up to maintenance  
schedule.  
4
5
6
7
Spark Plug, covered up to maintenance schedule  
Ignition Module  
Muffler with catalytic converter  
Fuel tank  
WHAT IS NOT COVERED  
All failures caused by abuse, neglect or improper  
maintenance are not covered.  
ADD -ON OR MODIFIED PARTS  
Add-on or modified parts that are not exempted by CARB  
or EPA may not be used. The use of any non-exempted  
add-on or modified parts will be grounds for disallowing a  
warranty claim. Husqvarna Forest & Garden will not be  
liable to warrant failures of warranted parts caused by the  
use of a non-exempted add-on or modified part.  
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 &  
Garden at 1-800-487-5951 or visit  
WHERE TO GET WARRANTY SERVICE  
Warranty services or repairs are provided through all  
Husqvarna Forest & Garden authorized servicing dealers.  
MAINTENANCE, REPLACEMENT AND  
REPAIR OF EMISSION-RELATED PARTS  
Any replacement part may be used in the performance of  
any warranty maintenance or repairs and must be  
provided without charge to the owner. Such use will not  
reduce the warranty obligations of the manufacturer.  
MAINTENANCE STATEMENT  
The owner is responsible for the performance of all  
required maintenance, as defined in the operator’s  
manual.  
34 – English  
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S35  
1
2
3
8,5 m  
28'  
10 cm  
4"  
4,2 m  
14'  
4
5
7
6
8
"Clic"  
10  
11  
15 cm  
6"  
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S35  
1
2
4,25 m  
14'  
4,25 m  
14'  
4
3
5
15 cm  
6"  
B
A
15 cm  
6"  
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T35, T35x  
1
2
3
8,5 m  
28'  
10 cm  
4"  
4,3 m  
14'  
4
5
7
6
8
"Clic"  
15 cm  
6"  
9
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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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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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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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Original instructions  
1154017-95  
´®z+V!o¶5:¨  
´®z+V!o¶5:¨  
2010-11-22  
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