Husqvarna Chainsaw 343F User Manual

Operator’s manual (EPA)  
343F 345FX 345FXT  
343FR 343R 345RX  
Please read the operator’s manual carefully and make sure you  
understand the instructions before using the machine.  
English  
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KEY TO SYMBOLS  
Symbols  
Switch off the engine by moving the stop  
switch to the STOP position before carrying  
out any checks or maintenance.  
WARNING! Clearing saws, brushcutters  
and trimmers can be dangerous! Careless  
or incorrect use can result in serious or  
fatal injury to the operator or others. It is  
extremely important that you read and  
understand the contents of the operator’s  
manual.  
Always wear approved protective gloves.  
Regular cleaning is required.  
Visual check.  
Please read the operator’s manual  
carefully and make sure you understand  
the instructions before using the machine.  
Always wear:  
A protective helmet where there is a risk  
of falling objects  
Approved hearing protection  
Approved eye protection  
Approved eye protection must always be  
used.  
Max. speed of output shaft, rpm  
Watch out for thrown objects and ricochets.  
The operator of the machine must ensure,  
while working, that no persons or animals  
come closer than 15 metres.  
15 m  
15 m  
T
F
0
5
Machines fitted with saw blades or grass  
blades can be thrown violently to the side  
when the blade comes into contact with a  
fixed object. This is called blade thrust. The  
blade is capable of amputating an arm or  
leg. Always keep people and animals at  
least 15 metres from the machine.  
Always wear approved protective gloves.  
Wear sturdy, non-slip boots.  
Only use non-metallic, flexible cutting  
attachments, i.e. trimmer heads with  
trimmer cord.  
Other symbols/decals on the machine refer to special  
certification requirements for certain markets.  
2 – English  
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CONTENTS  
Contents  
Note the following before starting:  
KEY TO SYMBOLS  
Please read the operator’s manual carefully.  
Symbols .......................................................................  
CONTENTS  
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  
Dear customer! ............................................................  
WHAT IS WHAT?  
result in permanent hearing impairment. So  
always use approved hearing protection.  
!
What is what on the clearing saw? ..............................  
What is what on the clearing saw? ..............................  
What is what on the clearing saw? ..............................  
GENERAL SAFETY PRECAUTIONS  
5
6
7
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.  
!
Important ......................................................................  
Personal protective equipment .....................................  
Machines safety equipment ........................................  
Cutting equipment ........................................................ 12  
ASSEMBLY  
Your warranty may not cover damage or  
liability caused by the use of non-authorized  
accessories or replacement parts.  
Assembling the handlebar and throttle ........................ 14  
Transport position, handlebar ...................................... 14  
Assembling the cutting equipment ............................... 15  
Fitting the blade guard/combination guard, grass blade  
and ball-bearing-mounted support cup ........................ 15  
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.  
!
Fitting the blade guard and saw blade ......................... 16  
Fitting the trimmer guard and trimmer head Trimmy SII 16  
Fitting other guards and cutting attachments ............... 17  
Adjusting the harness and clearing saw ...................... 17  
Standard harness ........................................................ 17  
Triobalance harness ..................................................... 18  
FUEL HANDLING  
Fuel safety ................................................................... 19  
Fuel .............................................................................. 19  
Fueling ......................................................................... 20  
STARTING AND STOPPING  
Check before starting ................................................... 21  
Starting and stopping ................................................... 21  
WORKING TECHNIQUES  
This label certify that the product has been certified in  
accordance with American exhaust requirements EPA 1.  
General working instructions ....................................... 23  
MAINTENANCE  
Carburetor .................................................................... 27  
Muffler .......................................................................... 29  
Cooling system ............................................................ 29  
Air filter ......................................................................... 29  
Bevel gear .................................................................... 30  
Drive shaft .................................................................... 30  
Spark plug .................................................................... 30  
Winter use .................................................................... 30  
Maintenance schedule ................................................. 32  
TECHNICAL DATA  
Technical data .............................................................. 33  
FEDERAL EMISSION CONTROL WARRANTY  
STATEMENT  
YOUR WARRANTY RIGHTS AND OBLIGATIONS ..... 38  
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?  
3
8
2
32  
33  
31  
5
17  
7
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34  
10  
18  
19  
20  
6
13  
11  
22  
1
23  
14  
35  
21  
35  
21  
12  
15  
16  
4
4
26  
25  
30  
28  
27  
29  
24  
What is what on the clearing saw? (343R, 345RX)  
1
2
3
4
5
6
7
8
9
Grass blade  
19 Support cup  
Grease filler cap, bevel gear  
Bevel gear  
20 Support flange  
21 Drive disc  
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 control  
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 Part throttle dial (345RX)  
34 Adjusting the throttle wire  
35 Metal cup  
16 Air filter cover  
17 Handle adjustment  
18 Locking screw  
English – 5  
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WHAT IS WHAT?  
8
3
2
7
18  
5
9
29  
17  
10  
6
13  
11  
18  
19  
21  
12  
1
14  
15  
16  
20  
4
23  
24  
22  
28  
26  
27  
25  
What is what on the clearing saw? (343F, 345FX, 345FXT)  
1
2
3
4
5
6
7
8
9
Saw blade  
16 Air filter cover  
17 Handle adjustment  
18 Locking nut  
Grease filler cap, bevel gear  
Bevel gear  
Cutting attachment guard  
Shaft  
19 Support flange  
20 Drive disc  
Handlebar  
21 Spark plug  
Throttle control  
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 (345FXT)  
6 – English  
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WHAT IS WHAT?  
8
3
2
33  
19  
5
7
9
17  
34  
10  
6
13  
11  
25  
22  
18  
12  
19  
20  
24  
23  
21  
21  
14  
15  
16  
1
4
4
20  
1
22  
20  
4
32  
26  
30  
28  
27  
29  
31  
What is what on the clearing saw? (343FR)  
1
2
3
4
5
6
7
8
9
Blade  
18 Spark plug cap and spark plug  
Grease filler cap, bevel gear  
Bevel gear  
19 Locking nut  
20 Drive disc  
Cutting attachment guard  
Shaft  
21 Support flange  
22 Metal cup  
Handlebar  
23 Support cup  
Throttle control  
Stop switch  
24 Locking screw  
25 Trimmer head  
26 Transport guard  
27 Allen key  
Throttle lockout  
10 Support eyes for harness  
11 Cylinder cover  
12 Starter handle  
13 Fuel tank  
28 Carburettor screwdriver  
29 Locking pin  
30 Harness  
14 Choke control  
15 Air purge  
31 Socket spanner  
32 Operator’s manual  
33 Start throttle button  
34 Adjusting the throttle wire  
16 Air filter cover  
17 Handle adjustment  
English – 7  
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GENERAL SAFETY PRECAUTIONS  
Important  
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.  
!
IMPORTANT!  
The machine is only designed for trimming grass, grass  
clearing and/or forestry clearing.  
HELMET  
A helmet should be worn if the trees being cleared are taller  
than 2 m.  
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.  
HEARING PROTECTION  
Wear personal protective equipment. See instructions  
under the heading Personal protective equipment.  
Wear hearing protection that provides adequate noise  
reduction.  
Never use a machine that has been modified in any way  
from its original specification.  
Never use a machine that is faulty. Carry out the checks,  
maintenance and service instructions described in this  
manual.Some maintenance and service measures must be  
carried out by trained and qualified specialists. See  
instructions under the heading Maintenance.  
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.  
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.  
GLOVES  
Gloves should be worn when necessary, e.g., when fitting  
cutting attachments.  
WARNING! The ignition system of this  
machine produces an electromagnetic field  
!
during operation.This field may under some  
circumstances interfere with pacemakers.To  
reduce the risk of serious or fatal injury, we  
recommend persons with pacemakers to  
consult their physician and the pacemaker  
manufacturer before operating this machine.  
BOOTS  
Wear boots with steel toe-caps and non-slip sole.  
WARNING! Running an engine in a confined  
or badly ventilated area can result in death  
due to asphyxiation or carbon monoxide  
poisoning.  
!
Personal protective equipment  
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.  
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.  
FIRST AID KIT  
Always have a first aid kit nearby.  
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.  
8 – English  
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GENERAL SAFETY PRECAUTIONS  
Press the throttle lockout and make sure it returns to its  
original position when you release it.  
Machine s 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.  
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.  
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 be checked. See  
instructions under the heading Maintenance.  
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.  
!
Throttle lockout  
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.  
Stop switch  
Use the stop switch to switch off the engine.  
Make sure the throttle control is locked at the idle setting  
when the throttle lockout is released.  
Start the engine and make sure the engine stops when you  
move the stop switch to the stop setting.  
English – 9  
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GENERAL SAFETY PRECAUTIONS  
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 damage  
in people who have impaired circulation.  
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.  
!
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.  
Check that the guard is undamaged and not cracked.Replace  
the guard if it has been exposed to impact or is cracked.  
Quick release  
There is an easily accessible, quick release fitted at the front  
as a safety precaution in case the engine catches fire, or in  
any other situation that requires you to free yourself from the  
machine and harness. See instructions under the heading  
Adjusting the harness and clearing saw. Certain harnesses  
also have a quick release fitted to the support hook.  
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.  
!
Vibration damping system  
Check that the harness straps are correctly positioned. Once  
the harness and machine have been adjusted, check that the  
harness quick release works correctly.  
Your machine is equipped with a vibration damping system  
that is designed to reduce vibration and make operation  
easier.  
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.  
Use of incorrectly wound cord or an incorrect cutting  
attachment increases the level of vibration. See instructions  
under the heading Cutting equipment.  
The machines vibration damping system reduces the transfer  
of vibration between the engine unit/cutting equipment and  
the machines handle unit.  
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.  
10 – English  
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GENERAL SAFETY PRECAUTIONS  
For mufflers it is very important that you follow the instructions  
Locking nut  
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.  
A locking nut is used to secure some types of cutting  
attachment.  
Regularly check that the muffler is securely attached to the  
machine.  
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 should operate the socket spanner  
when loosening or tightening the nut.  
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.  
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!  
!
The nylon lining inside the locking nut must not be so worn  
that you can turn it by hand. The lining should offer a  
resistance of at least 1.5 Nm. The nut should be replaced  
after it has been put on approx. 10 times.  
WARNING! The inside of the muffler contain  
chemicals that may be carcinogenic. Avoid  
!
contact with these elements in the event of a  
damaged muffler.  
Locking screw  
WARNING! Bear in mind that:  
The lock screw must be tightened securely for ball-bearing-  
mounted support cups.  
!
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!  
English – 11  
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