Husqvarna Trimmer 128C User Manual

EN (2-22)  
FR (23-43)  
ES (44-64)  
 
SYMBOL EXPLANATION  
Symbols  
Only intended for trimmer heads.  
WARNING: Clearing saws, brush-  
cutters and trimmers can be dan-  
gerous! Careless or incorrect use  
can result in serious or fatal  
injury to the operator or others.  
Please read the operator’s manual  
carefully and make sure you  
understand the instructions  
before using the machine.  
Noise emission to the  
environment according to the  
European Community’s  
Directive. The machine’s  
emission is specified in the  
Technical data section and  
on label.  
Always wear:  
S A protective helmet where there  
is a risk of falling objects  
S Hearing protection  
S Approved eye protection  
Max. speed of output shaft, rpm  
Sound pressure level at  
7,5 metres  
Beware of thrown objects and  
ricochets.  
Use unleaded or quality leaded  
gasoline and two--stroke oil  
mixed at a ratio of 2% (1:50).  
The operator of the machine  
shall ensure, while working,  
that no persons or animals  
come closer than 15 metres.  
Arrows which show limits for  
handle mounting.  
Other symbols/decals on the machine  
refer to special certification requirements  
for certain markets.  
Always wear approved protective  
gloves.  
Stop the engine by pushing  
and holding the stop switch  
in the STOP position. 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.  
Use anti--slip and stable boots.  
Only use non--metallic, flexible  
cutting attachments, i.e. trimmer  
heads with trimmer line.  
Regular cleaning is required.  
Visual check.  
This product is in accordance with  
applicable EC directives.  
Approved eye protection must  
always be used.  
English---2  
545196741 Rev. 2 4/30/09  
 
CONTENTS  
Contents  
Note the following before  
KEY TO SYMBOLS  
starting:  
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . 2  
CONTENTS  
Contents . . . . . . . . . . . . . . . . . . . . . . . . 3  
Note the following before starting . . . . 3  
WHAT IS WHAT?  
What is what? . . . . . . . . . . . . . . . . . . . 4  
GENERAL SAFETY PRECAUTIONS  
Important . . . . . . . . . . . . . . . . . . . . . . . . 5  
Personal protective equipment . . . . . . 5  
Machine’s safety equipment . . . . . . . . 6  
Cutting equipment . . . . . . . . . . . . . . . . . 8  
ASSEMBLY  
Fitting the loop handle . . . . . . . . . . . . . 9  
Fitting the trimmer guard and  
trimmer head . . . . . . . . . . . . . . . . . . . . . 9  
FUEL HANDLING  
Fuel safety . . . . . . . . . . . . . . . . . . . . . . . 10  
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Fuelling . . . . . . . . . . . . . . . . . . . . . . . . . 11  
STARTING AND STOPPING  
Check before starting . . . . . . . . . . . . . . 12  
Starting and stopping . . . . . . . . . . . . . . 12  
WORKING TECHNIQUES  
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. Long--term exposure to noise can  
result in permanent hearing impairment.  
Always use approved hearing protection.  
WARNING: Under no circum-  
stances 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.  
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.  
General working instructions . . . . . . . . 14  
MAINTENANCE  
Carburetor . . . . . . . . . . . . . . . . . . . . . . . 16  
Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Spark plug . . . . . . . . . . . . . . . . . . . . . . . 17  
Air filter . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
Bevel gear . . . . . . . . . . . . . . . . . . . . . . . 17  
Maintenance schedule . . . . . . . . . . . . . 18  
TECHNICAL DATA  
Technical data . . . . . . . . . . . . . . . . . . . . 19  
EC--declaration of conformity  
(Applies to Europe only) . . . . . . . . . . . . 20  
English---3  
545196741 Rev. 2 4/30/09  
 
WHAT IS WHAT?  
2
1
3
6
128L  
8
10  
11  
9
5
4
16  
7
128C  
1
15  
13  
14  
12  
4
19  
20  
17  
1
What is what?  
1. Trimmer head  
2. Grease filler cap  
11. Starter handle  
12. Fuel tank  
3. Bevel gear  
4. Cutting attachment guard  
5. Shaft  
6. Loop handle  
7. Throttle control  
13. Choke control  
14. Primer bulb  
15. Air filter cover  
16. Handle adjustment  
17. Drive disc  
18  
8. Stop switch  
18. Operator’s manual  
9. Throttle lock--out  
10.Cylinder cover  
19. Wrench (Model 128C only)  
20. Hex wrench (Model 128L only)  
English---4  
545196741 Rev. 2 4/30/09  
 
GENERAL SAFETY PRECAUTIONS  
HEARING PROTECTION  
Wear hearing protection that provides  
adequate noise reduction.  
Important  
IMPORTANT! The machine is only designed  
for trimming grass.  
The only accessories you can operate with  
this engine unit are the cutting attachments  
we recommend in the chapter on Technical  
data.  
Never use the machine if you are tired, if you  
have drunk alcohol, or if you are taking medi-  
cation that could affect your vision, your  
judgement or your co--ordination.  
Wear personal protective equipment. See in-  
structions under the heading Personal  
protective equipment.  
Never use a machine that has been modified  
in any way from its original specification.  
Never use a machine that is faulty. Carry out  
the checks, maintenance and service instruc-  
tions described in this manual. Some mainte-  
nance and service measures must be carried  
out by trained and qualified specialists. See  
instructions under the heading Maintenance.  
All covers and guards must be fitted before  
starting. Make sure the spark plug cap and  
lead are not damaged. Otherwise you could  
get an electric shock.  
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 EN  
166 in EU countries.  
GLOVES  
Gloves should be worn when necessary,  
e.g., when fitting cutting attachments.  
The machine operator must ensure that no  
people or animals come closer than 15  
metres while working. When several opera-  
tors are working in the same area, the safety  
distance should be at least 15 metres.  
BOOTS  
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 circum-  
stances can produce the force neces-  
sary to start the machine. This can  
mean a risk of serious personal inju-  
ry. Therefore remove the spark plug  
cap when the machine is not under  
close supervision.  
Wear anti--slip and stable boots.  
CLOTHING  
Wear clothes made of a strong fabric and  
avoid loose clothing that can catch on  
shrubs and branches. Always wear heavy,  
long pants. Do not wear jewelry, shorts  
sandals or go barefoot. Secure hair so it is  
above shoulder level.  
Personal protective equipment  
IMPORTANT! Whenever you use a clear-  
ing saw, brushcutter or trimmer you must  
wear personal protective equipment that is  
approved by the authorities. Personal  
protective equipment does not eliminate  
the risk of accidents, but it can reduce the  
effects of an injury in the event of an acci-  
dent. Ask your dealer for help when  
FIRST AID KIT  
A first aid kit should be carried by opera-  
tors of clearing saws, brushcutters or trim-  
mers.  
choosing protective equipment.  
WARNING: Listen out for warn-  
ing signals or shouts when you are  
wearing hearing protection. Always  
remove your hearing protection as  
soon as the engine stops.  
English---5  
545196741 Rev. 2 4/30/09  
 
GENERAL SAFETY PRECAUTIONS  
Machine’s safety equipment  
This section describes the machine’s safe-  
ty 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 re-  
duced and the risk of accidents can in-  
crease if machine maintenance is not car-  
ried out correctly and if service and/or re-  
pairs are not carried out professionally. If  
you need further information please contact  
your nearest service workshop.  
Press the throttle lock--out and make sure it  
returns to its original position when you re-  
lease it.  
IMPORTANT! All servicing and repair work  
on the machine requires special training. This  
is especially true of the machine’s safety  
equipment. If your machine fails any of the  
checks described below you must contact  
your service agent. When you buy any of our  
products we guarantee the availability of pro-  
fessional repairs and service. If the retailer  
who sells your machine is not a servicing  
dealer, ask him for the address of your near-  
est service agent.  
Check that the throttle control and throttle  
lock--out move freely and that the return  
springs work properly.  
WARNING: Never use a machine  
that has faulty safety equipment!  
Follow the control, maintenance  
and service instructions described  
in this section. If your machine fails  
any of these checks contact your  
service agent to get it repaired.  
See instructions under the heading Start.  
Start the machine and apply full throttle.  
Release the throttle and check that the  
cutting attachment stops and remains at a  
standstill. If the cutting attachment rotates  
with the throttle in the idle position then the  
carburettor idle setting must be checked.  
See instructions under the heading  
Maintenance.  
Throttle lock--out  
The throttle lock--out is designed to prevent  
accidental operation of the throttle control.  
When you press the lock--out (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  
lock--out both move back to their original  
positions. This movement is controlled by  
two independent return springs. This ar-  
rangement means that the throttle control is  
automatically locked at the idle setting.  
A
Stop switch  
Make sure the engine stops when you push  
and hold the stop switch.  
B
Make sure the throttle control is locked at  
the idle setting when the throttle lock--out is  
released.  
English---6  
545196741 Rev. 2 4/30/09  
 
GENERAL SAFETY PRECAUTIONS  
In countries that have a warm and dry  
Cutting attachment guard  
climate there is a significant risk of fire.  
We therefore fit certain mufflers with a spark  
arrestor mesh. Check whether the muffler  
on your machine is fitted with this kind of  
mesh.  
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.  
Muffler bolts  
For mufflers, it is very important that you  
follow the instructions on checking, main-  
taining, and servicing your machine.  
Never use a machine that has a faulty  
muffler.  
Check that the guard is undamaged and not  
cracked. Replace the guard if it has been  
exposed to impact or is cracked.  
Always use the recommended guard for the  
cutting attachment you are using. See the  
Technical data” section.  
WARNING: Never use a cutting  
attachment without an approved  
guard. See the section on “Technical  
data”. If an incorrect or faulty guard  
is fitted this can cause serious  
personal injury.  
Regularly check that the muffler is securely  
attached to the machine.  
Use of incorrectly wound trimmer line or an  
incorrect cutting attachment increases the  
level of vibration.  
WARNING: Overexposure to  
vibration can lead to circulatory  
damage or nerve damage in people  
who have impaired circulation.  
Contact your doctor if you experi-  
ence symptoms of overexposure to  
vibration. Such symptoms include  
numbness, loss of feeling, tingling,  
pricking, pain, loss of strength,  
changes in skin color or condition.  
These symptoms normally appear  
in the fingers, hands or wrists. The  
risk increases at low temperatures.  
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!  
WARNING: The inside of the  
muffler contain chemicals that may  
be carcinogenic. Avoid contact with  
these elements in the event of a  
damaged muffler.  
Muffler  
WARNING: Bear in mind that:  
Engine exhaust fumes contain car-  
bon monoxide, which can cause  
carbon monoxide poisoning. For  
this reason you should not start or  
run the machine indoors, or any-  
where that is poorly ventilated.  
The exhaust fumes from the engine  
are hot and may contain sparks  
which can start a fire. Never start  
the machine indoors or near com-  
bustible material!  
The muffler is designed to reduce the noise  
level and to direct the exhaust gases away  
from the operator.  
CAUTION! Muffler is fitted with a catalytic  
convertic designed to reduce harmful ex-  
haust gases.  
English---7  
545196741 Rev. 2 4/30/09  
 
GENERAL SAFETY PRECAUTIONS  
Trimmer head  
Cutting equipment  
This section describes how to choose and  
maintain your cutting equipment in order to:  
S Obtain maximum cutting performance.  
S Extend the life of cutting equipment.  
IMPORTANT!  
Always ensure the trimmer line is wound  
tightly and evenly around the drum, other-  
wise the machine will generate harmful  
vibration.  
IMPORTANT!  
Only use cutting attachments with the guards  
we recommend! See the section on  
Technical data”.  
Refer to the instructions for the cutting attach-  
ment to check the correct way to load the  
trimmer line and the correct line diameter.  
S Only use the recommended cutting at-  
tachments. See the section on “Technical  
data”.  
WARNING: Always stop the en-  
gine 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  
lead from the spark plug before  
you start to work on it.  
S Smaller machines generally require small  
trimmer heads and vice versa. This is be-  
cause when clearing using trimmer line  
the engine must throw out the trimmer  
line radially from the trimmer head and  
overcome the resistance of the grass  
being cleared.  
S The length of the trimmer line is also im-  
portant. A longer trimmer line requires  
greater engine power than a shorter  
trimmer line of the same diameter.  
S Make sure that the cutter on the trimmer  
guard is intact. This is used to cut the  
trimmer line to the correct length.  
S To increase the life of the trimmer line it  
can be soaked in water for a couple of  
days. This will make the line tougher so  
that it lasts longer.  
WARNING: A faulty cutting at-  
tachment may increase the risk of  
accidents.  
English---8  
545196741 Rev. 2 4/30/09  
 
ASSEMBLY  
NOTE: Make sure unit is assembled cor-  
rectly as shown in this manual.  
Fitting the trimmer guard and  
trimmer head (Model 128C)  
Fitting the loop handle  
S Position the handle on the shaft. Note  
that the handle must be mounted be-  
tween the two arrows on the shaft.  
S Fit the correct trimmer guard (A) for use  
with the trimmer head. Hook the trimmer  
guard/combination guard onto the fitting on  
the shaft and secure with the nut (B).  
B
A
S Fit tr, riwing  
nut as shown in the diagram.  
S Tighten the wing nut.  
C
S Fit the dust cup (C) on the shaft. The nut  
must be completely covered by the dust  
cup.  
S Hold the dust cup with a wrench to pre-  
vent the shaft from rotating.  
S Screw the trimmer head (D) onto the  
shaft.  
Fitting the trimmer guard and  
trimmer head (Model 128L)  
S Fit the correct trimmer guard (A) for use  
with the trimmer head. Hook the trimmer  
guard/combination guard onto the fitting  
on the shaft and secure with the bolt (D).  
D
B
D
C
S To dismantle, follow the instructions in  
the reverse order.  
A
A
S Fit the drive disc (B) on the output shaft.  
S Turn the shaft until one of the holes in the  
drive disc aligns with the corresponding  
hole in the gear housing.  
S Insert hex wrench (C) in the hole to lock  
the shaft.  
S Screw on the trimmer head (H) in the op-  
posite direction to the direction of rota-  
tion.  
S To dismantle, follow the instructions in  
the reverse order.  
English---9  
545196741 Rev. 2 4/30/09  
 
FUEL HANDLING  
Fuel safety  
Never start the machine:  
Petrol  
1. If you have spilled fuel on it. Wipe off the  
spillage and allow remaining fuel to evapo-  
rate.  
2. 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.  
CAUTION! Always use a good quality pet-  
rol/oil mixture (at least 90 octane).  
Use low--emission petrol, also known as  
alkylate petrol, if it is available.  
3. If the machine is leaking fuel. Check regu-  
larly for leaks from the fuel cap and fuel  
lines.  
Transport and storage  
S 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 electri-  
cal machinery, electric motors, electrical  
relays/switches or boilers.  
S When storing and transporting fuel al-  
ways use approved containers intended  
for this purpose.  
S When storing the machine for long peri-  
ods the fuel tank must be emptied. Con-  
tact your local petrol station to find out  
where to dispose of excess fuel.  
S Ensure the machine is cleaned and that  
a complete service is carried out before  
long--term storage.  
S The lowest octane recommended is 90.  
If you run the engine on a lower octane  
than 90, it can result in knocking. This  
gives rise to a high engine temperature,  
which can result in serious engine damage.  
S When working at continuous high revs, a  
higher octane rating is recommended.  
Two--stroke oil  
S For best results and performance, use  
HUSQVARNA two--stroke oil, which is  
specially formulated for our two--stroke  
engines. Mixture 1:50 (2%).  
S 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.  
S If HUSQVARNA two--stroke oil is not avail-  
able, you may use another two-stroke oil of  
good quality that is intended for air cooled  
engines. Contact your dealer when select-  
ing an oil. Mixing ratio 1:33 (3%).  
S Never use two--stroke oil intended for  
water--cooled outboard engines,  
sometimes referred to as outboard oil.  
S Never use oil intended for four--stroke  
engines.  
WARNING: Take care when han-  
dling fuel. Bear in mind the risk of  
fire, explosion and inhaling fumes.  
Two -stroke oil, litre  
Petrol,  
litre  
2% (1:50)  
0,10  
3% (1:33)  
0,15  
Fuel  
5
CAUTION! The machine is equipped with a  
two--stroke engine and must always be run  
using a mixture of petrol and two-stroke  
engine oil. It is important to accurately mea-  
sure 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.  
10  
15  
20  
0,20  
0,30  
0,30  
0,45  
0,40  
0,60  
WARNING: Fuel and fuel fumes  
are highly inflammable and can  
cause serious injury when inhaled  
or allowed to come in contact with  
the skin. For this reason observe  
caution when handling fuel and  
make sure there is adequate ven-  
tilation.  
English---10  
545196741 Rev. 2 4/30/09  
 
FUEL HANDLING  
Mixing  
Fuelling  
S Always mix the petrol and oil in a clean  
container intended for fuel.  
S Always start by flling half the amount of the  
petrol to be used. Then add the entire  
amount of oil. Mix (shake) the fuel mixture.  
Add the remaining amount of petrol.  
S Mix (shake) the fuel mixture thoroughly  
before filling the machine’s fuel tank.  
WARNING: Taking the following  
precautions, will lessen the risk of  
fire:  
Do not smoke or place hot objects  
near fuel.  
Always shut off the engine before  
refueling.  
Always stop the engine and let it  
cool for a few minutes before refu-  
elling.  
When refueling, open the fuel cap  
slowly so that any excess pressure  
is released gently.  
Tighten the fuel cap carefully after  
refueling.  
Always move the machine away  
from the refueling area before  
starting.  
S Do not mix more than one month’s sup-  
ply of fuel at a time.  
S If the machine is not used for some time,  
the fuel tank should be emptied and  
cleaned.  
S Clean the area around the fuel cap.  
Contamination in the tank can cause  
operating problems.  
S Ensure that the fuel is well mixed by shak-  
ing the container before filling the tank.  
WARNING: The catalytic con-  
verter muffler gets very hot during  
and after use. This also applies  
during idling. Be aware of the fire  
hazard, especially when working  
near flammable substances and/or  
vapors.  
Min. 3 m  
English---11  
545196741 Rev. 2 4/30/09  
 
STARTING AND STOPPING  
Check before starting  
Starting and stopping  
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.  
WARNING: The complete clutch,  
clutch cover, and shaft must be  
fitted before the machine is started,  
otherwise parts could come loose  
and cause personal injury.  
Always move the machine away  
from the refueling area before  
starting. Place the machine on a  
flat surface. Ensure the cutting at-  
tachment cannot come into contact  
with any object.  
S Never start the machine indoors. Exhaust  
fumes can be dangerous if inhaled.  
S Observe your surroundings and make  
sure that there is no risk of people or  
animals coming into contact with the  
cutting equipment.  
S Place the machine on the ground,  
ensure the cutting attachment is clear of  
twigs and stones. Hold the body of the  
machine on the ground using your left  
hand (CAUTION! Not with your foot).  
Then grip the starter handle with your  
right hand and pull the starter cord.  
Make sure no unauthorized  
persons are in the working area,  
otherwise there is a risk of serious  
personal injury. The safety  
distance is 15 meters.  
Cold engine  
Primer bulb: Press the primer bulb 10  
times until fuel begins to fill the bulb. The  
primer bulb need not be completely filled.  
S Check that the trimmer head and trimmer  
guard are not damaged or cracked.  
Replace the trimmer head or trimmer  
guard if they have been exposed to  
impact or are cracked.  
Choke: Move the blue engine choke lever  
over to the closed position.  
Starting  
Hold the body of the machine on the  
ground using your left hand (CAUTION!  
Not with your foot!).  
Firmly grip the starter rope handle with  
your right hand. DO NOT squeeze  
throttle trigger. Slowly pull out the cord  
until you feel some resistance (the starter  
pawls grip); then quickly and powerfully  
pull the cord.  
S Never use the machine without a guard  
nor with a defective guard.  
Never wrap the starter cord around  
your hand.  
Repeat pulling the cord until the engine  
attempts to start. Move the blue engine  
choke lever to the ½ position. Pull starter  
rope until engine runs. Move the blue en-  
gine choke lever to the opened position.  
English---12  
545196741 Rev. 2 4/30/09  
 
STARTING AND STOPPING  
Stopping  
Stop the engine by pushing and holding  
the stop switch in the STOP position until  
the engine stops.  
NOTE: If engine dies, return blue engine  
choke lever to the closed position and  
repeat starting steps.  
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.  
WARNING: When the engine is  
started with the choke in the closed  
position the cutting attachment will  
start to rotate immediately.  
CAUTION! The stop switch automatically  
returns to the start position. In order to pre-  
vent unintentional starting, the spark plug  
cap must be removed from the spark plug  
when assembling, checking and/or per-  
forming maintenance.  
Warm engine  
With a warm engine, move the blue engine  
choke lever to the ½ position. Pull starter  
rope until engine runs. Move the blue en-  
gine choke lever to the opened position.  
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 dam-  
aged spark plug cap.  
English---13  
545196741 Rev. 2 4/30/09  
 
WORKING TECHNIQUES  
General working instructions  
WARNING: Neither the operator  
of the machine nor anyone else  
may attempt to remove the cut ma-  
terial while the engine is running or  
the cutting equipment is rotating,  
as this can result in serious injury.  
Stop the engine and cutting equip-  
ment 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  
burned if you touch it.  
IMPORTANT!  
This section describes the basic safety pre-  
cautions for working with trimmers. If you  
encounter a situation where you are uncer-  
tain how to proceed you should ask an ex-  
pert. Contact your servicing dealer.  
Avoid all usage which you consider to be  
beyond your capability.  
You must understand the difference between  
forestry clearing, grass clearing and grass  
trimming before use.  
WARNING: Watch out for  
Basic safety rules  
thrown objects. Always wear ap-  
proved eye protection. Never lean  
over the cutting attachment guard.  
Stones, rubbish, etc. can be thrown  
up into the eyes causing blindness  
or serious injury. Keep unautho-  
rised persons at a distance. Chil-  
dren, animals, onlookers and help-  
ers should be kept outside the  
safety zone of 15 m. Stop the ma-  
chine immediately if anyone ap-  
proaches. Never swing the ma-  
chine around without first checking  
behind you to make sure noone is  
within the safety zone.  
1. Look around you:  
S To ensure that people, animals or other  
things cannot affect your control of the  
machine.  
S To ensure that people, animals, etc.,  
do not come into contact with the cut-  
ting attachment or loose objects that  
are thrown out by the cutting attach-  
ment.  
S CAUTION! Do not use the machine  
unless you are able to call for help in  
the event of an accident.  
2. 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.  
3. Make sure you can move and stand safely.  
Check the area around you for possible ob-  
stacles (roots, rocks, branches, ditches, etc.)  
in case you have to move suddenly. Take  
great care when working on sloping ground.  
Basic working techniques  
S Always slow the engine to idle speed after  
each working operation. Long periods at  
full throttle without any load on the engine  
can lead to serious engine damage.  
WARNING: Sometimes branches  
or grass get caught between the  
guard and cutting attachment.  
Always stop the engine before  
cleaning.  
Grass trimming with a trimmer head  
Trimming  
S Hold the trimmer head just above the ground  
at an angle. It is the end of the trimmer line  
that does the work. Let the trimmer line work  
at its own pace. Never press the trimmer  
line into the area to be cut.  
4. Switch off the engine before moving to  
another area.  
5. Never put the machine down with the engine  
running or while the cutting attachment is  
rotating.  
S The trimmer line 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.  
English---14  
545196741 Rev. 2 4/30/09  
 
WORKING TECHNIQUES  
S
Reduce the risk of damaging plants by  
shortening the trimmer line to 4--4 1/2 inches  
(10--12 cm) and reducing the engine speed.  
Sweeping  
S When trimming you should use less than  
full throttle so that the trimmer line lasts  
longer and to reduce the wear on the  
trimmer head.  
S The fan effect of the rotating line can be  
used for quick and easy clearing up.  
Hold the trimmer line parallel to and  
above the area to be swept and move  
the tool to and fro.  
Clearing  
S The clearing technique removes all un-  
wanted vegetation. Keep the trimmer  
head just above the ground and tilt it. Let  
the end of the trimmer line strike the  
ground around trees, posts, statues and  
the like. CAUTION! This technique  
increases the wear on the trimmer line.  
S When cutting and sweeping you should  
use full throttle to obtain the best results.  
WARNING: Neither the operator  
of the machine nor anyone else may  
attempt to remove the cut material  
while the engine is running or the  
trimmer line is rotating, as this can  
result in serious injury. Stop the  
engine and trimmer head before you  
remove material that has wound  
around the drive 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 burned if you touch it.  
S The must  
be fed forward more often when working  
against stones, brick, concrete, metal  
fences, etc., than when coming into con-  
tact with trees and wooden fences.  
Cutting  
WARNING: Watch out for thrown  
objects. Always wear eye protection.  
Never lean over the cutting attach-  
ment guard. Stones, rubbish, etc.  
can be thrown up into the eyes  
causing blindness or serious injury.  
Keep unauthorized persons at a dis-  
tance. Children, animals, onlookers  
and helpers should be kept outside  
the safety zone of 15 m.  
S The trimmer is ideal for cutting grass that  
is difficult to reach using a normal lawn  
mower. Keep the trimmer line parallel to  
the ground when cutting. Avoid pressing  
the trimmer head against the ground as  
this can ruin the lawn and damage the  
tool.  
Stop the machine immediately if  
anyone approaches.  
S Do not allow the trimmer head to con--  
stantly come into contact with the ground  
during normal cutting. Constant contact  
of this type can cause damage and wear  
to the trimmer head.  
English---15  
545196741 Rev. 2 4/30/09  
 
MAINTENANCE  
The owner is responsible for the perfor-  
mance of all required maintenance as  
defined in the operator’s manual.  
Idle Speed  
Screw--T  
Carburetor  
WARNING: If the idle speed can-  
not be adjusted so that the cutting  
attachment stops, contact your ser-  
vicing dealer. Do not use the ma-  
chine until it has been correctly ad-  
justed or repaired.  
Your Husqvarna product has been designed  
and manufactured to specifications that re-  
duce 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 minimize harm-  
ful exhaust emissions after the run--in peri-  
od, ask your servicing dealer to adjust your  
carburetor.  
Unit/Maintenance Safety  
Disconnect the spark plug before perform-  
ing maintenance, except carburetor adjust-  
ments.  
WARNING: The complete clutch,  
clutch cover, and shaft must be  
fitted before the machine is started,  
otherwise parts could come loose  
and cause personal injury.  
Muffler  
Function  
CAUTION! Muffler is fitted with a catalytic  
converter designed to reduce harmful ex-  
haust gases.  
S The carburetor governs the engine’s  
speed via the throttle control. Air and fuel  
are mixed in the carburetor.  
S 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 counterclockwise gives a lower  
idle speed.  
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 com-  
bustible material.  
Basic setting  
S The basic carburetor settings are ad-  
justed during testing at the factory. Fine  
adjustment should be carried out by a  
skilled technician.  
Mufflers are equipped with a special spark  
arrestor mesh. You should clean the mesh  
at least once a month. This is best done  
with a wire brush. If the mesh is damaged  
it should be replaced. If the mesh is fre-  
quently blocked, this can be a sign that the  
performance of the catalytic converter is  
impaired. Contact your dealer to inspect  
the muffler. A blocked mesh will cause the  
machine to overheat and result in damage  
to the cylinder and piston.  
CAUTION! If the cutting attachment rotates  
when the engine is idling the idle adjustment  
screw T should be turned counterclockwise  
until the cutting attachment stops.  
Rec. idle speed:  
See “Technical data” section.  
Recommended max. speed:  
See “Technical data” section.  
Fine adjustment of the idle speed--T  
Adjust the idle speed using the idle adjust-  
ment 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 counter-  
clockwise until the cutting attachment stops.  
The idle speed is correctly adjusted when  
the engine will run smoothly in every posi-  
tion. The idle speed should also be well  
below the speed at which the cutting attach-  
ment starts to rotate.  
Muffler bolts  
Spark arrestor mesh  
CAUTION! Never use a machine that has  
a faulty or loose muffler. Ensure the muffler  
bolts are tight.  
English---16  
545196741 Rev. 2 4/30/09  
 
MAINTENANCE  
Air filter  
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 air filter must be regularly cleaned to  
remove dust and dirt in order to avoid:  
S Carburetor malfunctions  
S Starting problems  
S Loss of engine power  
S Unnecessary wear to engine parts  
S Excessive fuel consumption  
WARNING: The inside of the  
muffler contain chemicals that may  
be carcinogenic. Avoid contact with  
these elements in the event of a  
damaged muffler.  
WARNING: Bear in mind that:  
Engine exhaust fumes contain car-  
bon monoxide, which can cause  
carbon monoxide poisoning. For  
this reason you should not start or  
run the machine indoors, or any-  
where that is poorly ventilated.  
The exhaust fumes from the engine  
are hot and may contain sparks  
which can start a fire. Never start  
the machine indoors or near com-  
bustible material!  
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.  
Rinse thoroughly. Ensure that the filter is dry  
before refitting it.  
Spark plug  
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.  
The spark plug condition is influenced by:  
S Incorrect carburetor adjustment.  
S An incorrect fuel mixture (too much or in-  
correct type of oil).  
Bevel gear  
(128L)  
S A dirty air filter.  
These factors cause deposits on the spark  
plug electrodes, which may result in operat-  
ing problems and starting difficulties.  
If the machine is low on power, difficult to  
start or runs poorly at idle speed: always  
check the spark plug first before taking  
any further action. If the spark plug is dirty,  
clean it and check that the electrode gap is  
0,6 mm. The spark plug should be replaced  
after about a month in operation or earlier if  
necessary.  
The bevel gear is filled with the right quan-  
tity of grease at the factory. However, be-  
fore using the machine you should check  
that the bevel gear is filled three--quarters  
full with grease. Use HUSQVARNA special  
grease.  
0,6 mm  
CAUTION! Always use the recommended  
spark plug type! Use of the wrong spark  
plug can damage the piston/cylinder.  
The grease in the bevel gear does not nor-  
mally need to be changed except if repairs  
are carried out.  
English---17  
545196741 Rev. 2 4/30/09  
 
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 main-  
tenance and service work described in this Operator’s Manual. More extensive work must  
be carried out by an authorised service workshop.  
Daily  
Weekly  
Monthly  
Maintenance  
Maintenance  
Maintenance Maintenance  
Clean the outside of the machine.  
X
Make sure the throttle trigger lock and the  
throttle function correctly from a safety point  
of view.  
X
X
Check that the stop switch works correctly.  
Check that the cutting attachment does not  
rotate at idle.  
X
X
Clean the air filter. Replace if necessary.  
Check that the guard is undamaged and not  
cracked. Replace the guard if it has been  
exposed to impact or is cracked.  
X
Check that the trimmer head is undamaged  
and not cracked. Replace the trimmer head  
if necessary.  
X
X
Check that nuts and screws are tight.  
Check that there are no fuel leaks from the  
engine, tank or fuel lines.  
X
Check the starter and starter cord.  
X
Clean the outside of the spark plug. Re-  
move it and check the electrode gap. Adjust  
the gap to 0,6 mm or replace the spark plug.  
Check that the spark plug is fitted with a  
suppressor.  
X
X
Clean the outside of the carburetor and the  
space around it.  
Check that the bevel gear is filled three--  
quarters full with lubricant. Fill if necessary  
using special grease.  
X
Check the fuel filter from contamination and  
the fuel hose from cracks or other defects.  
Replace if necessary.  
X
X
Check all cables and connections.  
Check the clutch, clutch springs and the  
clutch drum for wear. Replace if necessary  
by an autorized service workshop.  
X
Replace the spark plug. Check that the  
spark plug is fitted with a suppressor.  
X
X
Clean or replace the spark arrestor mesh  
on the muffler.  
English---18  
545196741 Rev. 2 4/30/09  
 
TECHNICAL DATA  
Technical data  
128C  
128L  
Engine  
3
Cylinder volume, cm  
Cylinder bore, mm  
Stroke, mm  
28  
35  
28,7  
28  
35  
28,7  
Idle speed, rpm  
Recommended max. speed, rpm  
Speed of output shaft, rpm  
Max. engine output, acc. to ISO 8893, hp/kW  
Catalytic converter muffler  
Speed--regulated ignition system  
2,800--3,200  
10000  
8000  
0,8  
2,800--3,200  
11000  
8000  
0,8  
Yes  
Yes  
Yes  
Yes  
Ignition system  
Manufacturer/type of ignition system  
Spark plug  
Walbro/CD  
Champion  
RCJ--8Y  
0,6  
Walbro/CD  
Champion  
RCJ--8Y  
0,6  
Electrode gap, mm  
Fuel and lubrication system  
Manufacturer/type of carburetor  
Fuel tank capacity, liter  
Zama  
0,4  
Zama  
0,4  
Weight  
Weight without fuel, cutting attachment and guard, kg  
4,4  
4,8  
Noise emissions  
(see note 1)  
Sound power level, measured dB(A)  
109  
114  
109  
114  
Sound power level, guaranteed L dB(A)  
WA  
Noise levels  
(see note 2)  
Equivalent noise pressure level at the operators’ ear,  
measured according to EN/ISO 11806 and ISO 22868,  
dB(A)  
100  
100  
Vibration levels  
Vibration levels at handles, measured according to  
EN/ISO 11806 and ISO 22867,  
FRONT HANDLE  
2
Idling, m/s  
3,9  
5,6  
3,9  
5,6  
2
Racing, m/s  
REAR HANDLE  
2
Idling, m/s  
2,9  
8,5  
3/5  
2,9  
8,5  
3/5  
2
Racing, m/s  
At idle, left/right handles:  
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity  
with EC directive 2000/14/EC.  
Note 2: Equivalent sound pressure level is calculated as the time--weighted energy total for  
sound pressure levels under various working conditions with the following time distribution:  
1/2 idling and 1/2 max speed.  
NOTE! Noise pressure at the user’s ear and vibration on the handles are measured with all  
the machine’s approved cutting equipment fitted. The table indicates the highest and lowest  
values.  
Model 128C (3/8 RH arbor shaft thread)  
Approved accessories Type  
Trimmer head T25  
Cutting attachment guard, part. no.  
537 33 83--03  
Model 128L (M10 LH arbor shaft thread)  
Approved accessories Type  
Cutting attachment guard, part. no.  
537 33 83--02  
Trimmer head  
Plastic blades  
T25  
Tricut 300 mm  
531 00 38--11  
English---19  
545196741 Rev. 2 4/30/09  
 
DECLARATION OF CONFORMITY  
EC Declaration of Conformity (Only applies to Europe)  
We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46--36--146000, as authorised  
representative in the Community, declare that the grass trimmer model Husqvarna  
128C/128L from serial numbers 2009--031N00001 and onwards (the year is clearly stated  
on the rating plate, followed by the serial number), comply with the requirements of the  
COUNCIL’S DIRECTIVES:  
of 22 June 1998 “relating to machinery” 98/37/EC, annex IIA;  
of 15 December 2004 “relating to electromagnetic compatibility” 2004/108/EC, and applicable  
supplements; and  
of 8 May 2000 “relating to the noise emissions in the environment” in accordance with Annex  
V of 2000/14/EC. The measured sound power is 109 dB(A), the guaranteed sound power is  
114 dB(A). The cutting width is 43 cm.  
The following standards have been applied:EN12100 -1:2003, EN 12100 -2:2003, EN ISO  
11806:1997 and CISPR 12:2005.  
SMP, The Swedish Machinery Testing Institute, Fyrisborgsgatan 3 S--754 50 Uppsala,  
Sweden, has carried out voluntary type approval. The certificate(s) are numbered:  
SEC/05/1086.  
09--01--31  
Ronnie E. Goldman, Director of Engineering  
Handheld Consumer Products  
English---20  
545196741 Rev. 2 4/30/09  
 
Trimmer Head Line Loading Instructions  
1
2
3
6 m  
20i  
3 m  
10i  
4
6
5
7
8
9
English---21  
545196741 Rev. 2 4/30/09  
 
Plastic Blades (Tri Cut)  
1
2
3
5
4
6
8
7
English---22  
545196741 Rev. 2 4/30/09  
 

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