Husqvarna 128C User manual

(24 - 47)
(48 - 71)

English---2
115373927 Rev. 5 5/15/12
CONTENTS
Contents
CONTENTS
Contents 2........................
Note the following before starting 2....
KEY TO SYMBOLS
Symbols 3.........................
SAFETY INSTRUCTIONS
Personal protective equipment 4......
Machine’s safety equipment 4........
Cutting equipment 5.................
Checking, maintaining and servicing
the machine’s safety equipment 5.....
General safety precautions 8.........
Starting 9.........................
Fuel safety 9.......................
Transporting and storage 9...........
General working instructions 9........
Basic safety rules 9.................
Basic working techniques 10..........
KNOW YOUR TRIMMER
Know your trimmer 12................
ASSEMBLY
Fitting the loop handle 13.............
Fitting the trimmer guard and
trimmer head 13.....................
FUEL HANDLING
Fuel 14............................
Fueling 14..........................
STARTING AND STOPPING
Check before starting 15..............
Starting and stopping 15..............
MAINTENANCE
Carburetor 16.......................
Muffler 17..........................
Spark plug 17.......................
Air filter 18..........................
Bevel gear 18.......................
Maintenance schedule 18.............
Trimmer head line loading instructions 19..
TECHNICAL DATA
Technical data 21....................
EMISSION CONTROL
WARRANTY STATEMENT 22.........
Note the following before start-
ing:
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. Maintenance, replacement,
or repair of the emission control devices and
system may be performed by any nonroad
engine repair establishment or individual.
The Emissions Compliance Period re
f
erred
to on the Emissions Compliance label indicates
the number of operating hours for which the
engine has been shown to meet Federal emis-
sions requirements. Category C = 50 hours,
B= 125 hours, and A = 300 hours.
For reference, please fill out the following
information that will be needed for future
servicing of your trimmer:
Model Number:
Serial Number:
Purchase Date:
Purchased From:
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.
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.
Your warranty may not cover
damage or liability caused by the
use of non--authorized accesso-
ries or replacement parts.
For customer assistance, call:
1-800-487-5951
Contact us at our website:
www.husqvarna.com
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.

English--- 3
115373927 Rev. 5 5/15/12
KEY TO SYMBOLS
Only intended for trimmer heads.
Use unleaded or quality leaded
gasoline and two--stroke oil
mixed at a ratio of 2% (1:50).
Other symbols/decals on the machine
refer to special certification requirements
for certain markets.
Stop the engine by pushing
and holding the stop switch
in the STOP position until the
engine stops before carrying
out any checks or maintenance.
Regular cleaning is required.
Visual check.
Approved eye protection must
always be used.
Symbols
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.
WARNING: Read the operator’s
manual before use. Failure to follow
instructions could result in serious
injury to the operator and/or
bystanders. Save operator’s manual.
Always wear:
SHearing protection
SApproved eye protection
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 50 feet
(15 meters).
Arrows which show limits for
handle positioning.
Always wear approved protective
gloves.
Wear sturdy, non--slip boots.
Only use non--metallic, flexible
cutting attachments, i.e. trimmer
heads with trimmer line.

English--- 4
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
GLOVES
Gloves should be worn when necessary,
e.g., when fitting cutting attachments.
HEARING PROTECTION
Wear hearing protection that provides
adequate noise reduction.
EYE PROTECTION
Always wear approved eye protection. If
you use a visor then you must also wear
approved protective goggles. Approved
protective goggles must comply with
standard ANSI Z87.1.
BOOTS
Wear sturdy, non--slip boots.
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 jewelry, shorts
sandals or go barefoot. Secure hair so it is
above shoulder level.
Personal protective equipment FIRST AID KIT
Always have a first aid kit nearby.
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
“Know your trimmer ” 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 ser-
vicing dealer.
Throttle lock--out
The throttle lock--out 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 lock--out
both move back to their original positions.
This movement is controlled by two inde-
pendent return springs. This arrangement
means that the throttle control is automati-
cally locked at the idle setting.
Stop switch
Make sure the engine stops when you push
and hold the stop switch.
WARNING: Never use a machine
that has faulty safety equipment!
Carry out the inspection, mainte-
nance and service routines listed in
this section.
A
B
WARNING: Whenever you use a
clearing 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 ef-
fectsofaninjuryintheeventofan
accident. Ask your dealer for help
when choosing protective equipment.
IMPORTANT! Listen for warning signals
or shouts when you are wearing hearing
protection. Always remove your hearing
protection as soon as the engine stops.

English--- 5
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
Cutting attachment guard
This guard is intended to prevent loose ob-
jects from being thrown towards the opera-
tor. The guard also protects the operator
from accidental contact with the cutting at-
tachment.
Use of incorrectly wound trimmer line or an
incorrect cutting attachment increases the
level of vibration.
Muffler
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
converter designed to reduce exhaust gas
emissions.
For mufflers, it is very important that you fol-
low the instructions on checking, maintain-
ing, and servicing your machine.
See Checking, maintaining and servicing the
machine’s safety equipment 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.
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.
Cutting equipment
A trimmer head is intended for trimming
grass.
Checking, maintaining and
servicing the machine’s
safety equipment
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 de-
scribed below you must contact your service
agent. When you buy any of our products we
guarantee the availability of professional re-
pairs and service. If the retailer who sells
your machine is not a servicing dealer, ask
him for the address of your nearest service
agent.
WARNING: Theinsideofthe
muffler contain chemicals that may
be carcinogenic. Avoid contact
with these elements in the event of
a damaged muffler.
CAUTION: Mufflers fitted with cata-
lytic converters get very hot during use
andremainsoforsometimeafterstop-
ping. This also applies at idle speed. Con-
tact can result in burns to the skin. Re-
membertheriskoffire!
WARNING: Engine exhaust
fumes contain carbon monoxide,
which can cause carbon monoxide
poisoning. DO NOT start or run the
machine indoors, or anywhere 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 in-
doors or near combustible material!

English--- 6
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
Throttle lock--out
SMake sure the throttle control is locked
at the idle setting when the throttle lock--
out is released.
SPress the throttle lock--out and make
sure it returns to its original position
when you release it.
SCheck that the throttle control and
throttle lock--out move freely and that the
return springs work properly.
SSee instructions under the section
“Start”. Start the machine and apply full
throttle. Release the throttle and check
that the cutting attachment stops and re-
mains at a standstill. If the cutting attach-
ment rotates with the throttle in the idle
position then the carburetor idle setting
must be checked. See instructions under
the section “Maintenance”.
Stop switch
SStart the engine and make sure the engine
stops when you push and hold the stop
switch.
Cutting attachment guard
SEnsure that the guard is undamaged and
is not cracked.
SReplace the guard if it has been exposed
to impact or is cracked.
SAlways use the recommended guard for
the cutting attachment you are using. See
section on “Technical data”.
Muffler
SNever use a machine that has a faulty
muffler.
SRegularly check that the muffler is securely
attached to the machine.
SThe muffler on this unit is equipped with a
special spark arrestor mesh. The mesh
should be checked and, if necessary.
cleaned by a servicing dealer. A blocked
mesh will cause the machine to overheat,
which can lead to serious damage. Never
use a muffler with a defective spark arres-
tor mesh. See the Maintenance section.

English--- 7
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
Trimmer head
SOnly use the recommended cutting at-
tachments. See the section on “Technical
data”.
IMPORTANT!
This section describes how to choose and
maintain your cutting equipment in order to:
Obtain maximum cutting performance.
Extend the life of cutting equipment.
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.
IMPORTANT!
Always ensure the trimmer line is wound
tightly and evenly around the drum, other-
wise the machine will generate harmful
vibration.
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.
Cutting equipment
This section describes how to choose and
maintain your cutting equipment in order to:
SObtain maximum cutting performance.
SExtend the life of cutting equipment.
General rules:
1. Only use cutting attachments with the
guards we recommend! See the section
on “Technical Data”.
2. Check the cutting attachment for damage
or cracks. A damaged cutting attachment
should always be replaced.
SSmaller 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.
SThe 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.
SMake sure that the cutter on the trimmer
guard is intact. This is used to cut the
trimmer line to the correct length.
STo 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: 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 servicing dealer to get
it repaired. Use of a machine with
faulty safety equipment increases
the risk of serious personal injury to
the operator or others.

English--- 8
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
Safety instructions regarding the
surroundings
SNever allow children to use the machine.
SEnsure no one comes closer than 50 feet
(15 meters) when working.
SNever allow anyone else to use the
machine without first ensuring that they
have understood the contents of the
operator’s manual.
Safety instructions before starting
work
SInspect the working area. Remove any
objects such as stones, broken glass,
nails, steel wire, string, etc. that can be
thrown or can wrap around the cutting
head or shaft.
SKeep others at a safe distance. Children,
animals, onlookers and helpers should
stand outside of the safety zone of 50
feet (15 meters). Bystanders should be
encouraged to wear safety glasses. Stop
the machine immediately if anyone
should approach.
SCheck the entire machine before starting
work. Replace damaged parts. Check for
fuel leakage and that all safety guards
and covers are complete and fastened
securely. Check all nuts and bolts.
SCheck the cutting head
for cracks or any other
damage.
SEnsure the trimmer guard
is mounted and not
damaged.
Personal protection
SAlways wear boots and
other equipment described
in the “Personal protective
equipment” section.
SAlways wear working
clothes and heavy--duty
long pants.
SNever wear loose fitting
clothes or jewelry.
SPersons with long hair
should (for personal safety)
put their hair up.
General safety precautions
IMPORTANT!
SThe machine is only designed for trimming
grass.
SThe only accessories you can operate
with this engine unit are the cutting at-
tachments we recommend in the “Tech-
nical data” section.
SNever use wire, rope, string, etc.
SNever use the machine if you are tired, if
you have drunk alcohol, or if you are tak-
ing medication that could affect your vi-
sion, your judgment or your coordination.
SNever use the machine in extreme weath-
er conditions such as severe cold, very hot
and/or humid climates.
SNever use a machine that has been modi-
fied in any way from its original specifica-
tion.
SWear personal protective equipment. See
instructions in the “Personal protective
equipment” section.
SNever 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 quali-
fied specialists. See instructions in the
“Maintenance” section.
SAll 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.
SThe machine operator must ensure that
no people or animals come closer than
50 feet (15 meters) while working.
SStay clear of spinning line.
SSecure or remove loose clothing or cloth-
ing with loosely hanging ties, straps, tas-
sels, etc. They can be caught in moving
parts.
SBeing fully covered also helps protect you
from debris and pieces of toxic plants
thrown by spinning line.
SKeep handles free of oil and fuel.
SAlways keep the engine on the right hand
side of your body.
SHold the unit firmly with both hands.
SKeep trimmer head below waist level and
away from all parts of your body. Do not
raise engine above your waist.
SKeep all parts of your body away from
muffler and spinning line. Keep engine be-
low waist level. A hot muffler can cause
serious burns.
SKeep firm footing and balance. Do not
overreach or use from unstable surfaces
such as ladders, trees, steep slopes, roof-
tops, etc.
SUse only in daylight or good artificial light.
SUse only for jobs explained in this manual.
WARNING: A faulty cutting at-
tachment may increase the risk of
accidents.

English--- 9
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
SCheck that the trimmer head and guard
are correctly secured.
SWhen adjusting the carburetor, make sure
the lower end is supported and that no one
is in the immediate vicinity.
SMake sure the cutting head does not rotate
when idling.
SMake sure the handle and safety features
are in order. Never use a machine that has
parts missing or has been changed in
relation to the specification.
SOnly use the machine for the purpose for
which it was intended.
Starting
SEnsure that all of the engine covers and
housings are properly fitted before the unit
is started.
SNever start or attempt to run the unit with
the clutch, clutch drum, clutch cover, or
driveshaft removed.
SNever start the machine indoors. Exhaust
fumes can be dangerous if inhaled.
SObserve your surroundings and make sure
that there is no risk of people or animals
coming into contact with the cutting equip-
ment.
SSee the “Starting and Stopping” section for
complete instructions.
Fuel safety
SAlways use a fuel container with an anti--
spill valve.
SNever refuel the machine while the engine
is running.
SAlways stop the engine and let it cool for a
few minutes before refueling.
SMake sure there is plenty of ventilation
when refueling or mixing fuel (gasoline and
2--stroke oil).
SMove the machine at least 10 feet (3 me-
ters) from the refueling point before start-
ing it.
SNever start the machine:
SIf you have spilled fuel on it. Wipe off
the spillage and allow remaining fuel to
evaporate.
SIf you have spilled fuel on yourself or
your clothes, change your clothes. Was
h
any part of your body that has come in
contact with fuel. Use soap and water.
WARNING: When the engine is
startedwiththechokeineitherthe
choke or start throttle positions the
cutting attachment will start to
rotate immediately.
Min. 10 ft.
(3 m)
SIf the machine is leaking fuel. Check
regularly for leaks from the fuel cap
and fuel lines.
SAvoid all skin contact with fuel. Fuel is
a skin irritant and may even cause
skin changes.
Transporting and storage
SStore 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.
SWhen storing and transporting fuel al-
ways use approved containers intended
for this purpose.
SWhen storing the machine for long peri-
ods the fuel tank must be emptied. Con-
tact your local gas station to find out
where to dispose of excess fuel.
SEnsure the machine is cleaned and that
a complete service is carried out before
long--term storage.
General working instructions
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.
Basic safety rules
1. Look around you:
STo ensure that people, animals or other
things cannot affect your control of the
machine.
STo 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.
WARNING: Take care when han-
dling fuel. Bear in mind the risk of
fire, explosion and inhaling fumes.

English--- 10
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
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.
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.
Basic working techniques
SAlways 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.
SIt is recommended that the engine not
be operated for longer than 1 minute at
full throttle.
Grass trimming using a trimmer head
Trimming
SHold the trimmer head just above the
ground at an angle. It is the end of the trim-
mer line that does the work. Let the trim-
mer line work at its own pace. Never press
the trimmer line into the area to be cut.
SThe 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.
WARNING: Sometimes branches
or grass get caught between the
guard and cutting attachment.
Always stop the engine before
cleaning.
SCAUTION! 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.
SReduce the risk o
f
damaging plants by
shortening the trimmer line to 4--4 1/2 inches
(10--12 cm) and reducing the engine speed.
SWhen trimming you should use less than
full throttle so that the trimmer line lasts
longer and to reduce the wear on the
trimmer head.
Clearing
SThe 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. IMPORTANT! This technique
increases the wear on the trimmer line.
SThe trimmer line wears quicker and 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
SThe 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.
SDo 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--- 11
115373927 Rev. 5 5/15/12
SAFETY INSTRUCTIONS
Sweeping
SThe 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.
SWhen cutting and sweeping you should
use full throttle to obtain the best results.
WARNING: Watch out for
thrown objects. Always wear
approved eye protection. Never
lean over the cutting attachment
guard. Stones, rubbish, etc. can be
thrown up into the eyes causing
blindness or serious injury. Keep
unauthorised persons at a dis-
tance. 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 ma-
chine around without first checking
behind you to make sure no one is
within the safety zone.
WARNING: Sometimes
branches or grass get caught
between the guard and cutting
attachment or wrapped around the
shaft. Neither the operator of the
machine nor anyone else may at-
tempt to remove the cut material
while the engine is running or the
cutting equipment is rotating,
as this can result in serious injury.
Stop the engine and cutting equip-
ment before you remove material.

English--- 12
115373927 Rev. 5 5/15/12
KNOW YOUR TRIMMER
1. Trimmer head 11. Starter handle
2. Grease filler cap 12. Fuel tank
3. Bevel gear 13. Choke control
4. Cutting attachment guard 14. Primer bulb
5. Shaft 15. Air filter cover
6. Loop handle 16. Handle adjustment
7. Throttle control 17. Drive disc
8. Stop switch 18. 2--stroke engine oil
9. Throttle lock--out 19. Operator’s manual (EPA)
10.Cylinder cover
Know your trimmer
5
2
910
6
16
17
1
4
18
13
811
15
13
14
7
12
19
128C
128L
1
4

English--- 13
115373927 Rev. 5 5/15/12
ASSEMBLY
Fitting the trimmer guard and
trimmer head (Model 128L)
SFit 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).
N
O
TE: Make sure unit is assembled cor-
rectly as shown in this manual.
Fitting the loop handle
SPosition the handle on the shaft. Note
that the handle must be mounted be-
tween the two arrows on the shaft.
SFit the screw, securing plate and wing
nut as shown in the diagram.
STighten the wing nut.
A
D
A
B
C
SFit the drive disc (B) on the output shaft.
STurn the shaft until one of the holes in the
drive disc aligns with the corresponding
hole in the gear housing.
SInsert hex wrench (C) in the hole to lock
the shaft.
SScrew on the trimmer head (H) in the op-
posite direction to the direction of rota-
tion.
H
STo dismantle, follow the instructions in
the reverse order.
Fitting the trimmer guard and
trimmer head (Model 128C)
SFit 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 wing nut (B).
A
C
B
SFit the dust cup (C) on the shaft. The nut
must be completely covered by the dust
cup.
SHold the dust cup with a wrench to pre-
vent the shaft from rotating.
SScrew the trimmer head (D) onto the
shaft.
STo dismantle, follow the instructions in
the reverse order.
D

English--- 14
115373927 Rev. 5 5/15/12
FUEL HANDLING
Fuel mixture
CAUTION! The machine is equipped with
a two--stroke engine and must always be
run using a mixture of gasoline and two--
stroke engine oil. It is important to accu-
rately 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 drastical-
ly affect the ratio of the mixture.
Gasoline
CAUTION! Always use high quality
unleaded gasoline.
SThis engine is certified to operate on
unleaded gasoline.
SThe lowest recommended octane rating
is 87. If you run the engine on lower oc-
tane rating than 87, “knocking” can oc-
cur. This leads to an increased engine
temperature, which can result in a seri-
ous engine breakdown.
SWhen working at continuous high revs a
higher octane rating is recommended.
Two -- strok e oil
SFor great results and performance use
HUSQVARNA two--stroke oil, which is
specially formulated for our two--stroke
engines. Mixture 1:50 (2%).
STo maximize the life of your trimmer, you
may choose to use a high quality syn-
thetic oil formulated for two--stroke
engines. Mixture 1:50 (2%).
SNever use two--stroke oil intended for
water--cooled outboard engines,
sometimes referred to as outboard oil.
SNever use oil intended for four--stroke
engines.
WARNING: Fuel and fuel fumes
are highly flammable and can cause
serious injury when inhaled or al-
lowed to come in contact with the
skin. For this reason, observe cau-
tion when handling fuel and make
sure there is adequate ventilation.
U.S. gallon U.S. fl. oz.
121/2
2 1/2 6 1/2
5127/8
Gasoline Tw o -- stroke oi l
2% (1:50)
SAlways start by flling 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.
SMix (shake) the fuel mixture thoroughly
before filling the machine’s fuel tank.
SDo not mix more than one month’s sup-
ply of fuel at a time.
SIf the machine is not used for some time,
the fuel tank should be emptied and
cleaned.
WARNING: The catalytic convert-
er muffler gets very hot during and
after use. This also applies during
idling.Beawareofthefirehazard,
especially when working near flam-
mable substances and/or vapors.
Fueling
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 re-
fueling.
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.
Min. 10 ft.
(3 m)
SClean the area around the fuel cap.
Contamination in the tank can cause
operating problems.
SEnsure that the fuel is well mixed by shak-
ing the container before filling the tank.
Mixing
SAlways mix the gasoline and oil in a
clean container intended for fuel.

English--- 15
115373927 Rev. 5 5/15/12
STARTING AND STOPPING
Check before starting
SInspect the unit before each use. Re-
place damaged parts. Check for fuel
leaks. Make sure all fasteners are in
place and secure. Make sure the cutting
attachment is properly installed and se-
curely fastened. Use only flexible, non-
metallic line recommended by the
manufacturer. Never use, for example,
wire or wire rope, which can break off
and become a dangerous projectile.
SCheck 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.
SNever use the machine without a guard
nor with a defective guard.
Starting and stopping
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.
Make sure no unauthorized persons
are in the working area, otherwise
there is a risk of serious personal
injury. The safety distance is 50 feet
(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.
Choke: Move the blue engine choke lever
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.
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 ½position. Pull starter
rope until engine runs. Move the blue en-
gine choke lever to the opened position.
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.

English--- 16
115373927 Rev. 5 5/15/12
STARTING AND STOPPING
Warm engine
With a warm engine, move the blue engine
choke lever to the ½position. Pull starter
rope until engine runs. Move the blue engine
choke lever to the opened position.
WARNING: When the engine is
started with the choke in the closed
position the cutting attachment will
start to rotate immediately.
Stopping
Stop the engine by pushing and holding
the stop switch in the STOP position until
the engine stops.
MAINTENANCE
Carburetor
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.
The owner is responsible for the per
f
or-
mance of all required maintenance as
defined in the operator’s manual.
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.
Function
SThe carburetor governs the engine’s
speed via the throttle control. Air and fuel
are mixed in the carburetor.
SThe 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.
Basic setting
SThe basic carburetor settings are ad-
justed during testing at the factory. Fine
adjustment should be carried out by a
skilled technician.
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.
WARNING: The cutting attach-
ment may be spinning during carbu-
retor adjustments. Wear your protec-
tive equipment and observe all safe-
ty instructions. Be sure the cutting
attachment stops turning when the
engine idles. When the unit is turned
off, make sure the cutting attach-
ments has stopped before the unit is
set down.
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 counterc-
lockwise 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 at-
tachment starts to rotate.
Idle Speed
Screw--T
WARNING: Improper mainte-
nance could result in serious engine
damage or in serious injury.

English--- 17
115373927 Rev. 5 5/15/12
MAINTENANCE
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.
Unit/Maintenance Safety
Disconnect the spark plug before perform-
ing maintenance, except carburetor adjust-
ments.
Muffler
CAUTION! Muffler is fitted with a catalytic
converter designed to reduce exhaust gas
emissions.
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.
Mufflers are equipped with a special spark
arrestor mesh. The mesh should be
checked and, if necessary. cleaned by a
servicing dealer. If the mesh is damaged,
it should be replaced. Ifthemeshisfre-
quently blocked, this can be a sign that the
performance of the catalytic converter is
impaired. Contact your servicing dealer to
inspect the muffler. A blocked mesh will
cause the machine to overheat and result
in damage to the cylinder and piston.
CAUTION! Never use a machine that has
a faulty or loose muffler. Ensure the muffler
bolts are tight.
Muffler bolts
Spark plug
The spark plug condition is influenced by:
SIncorrect carburetor adjustment.
SAn incorrect fuel mixture (too much or in-
correct type of oil).
SA 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
0.024″(0.6 mm). The spark plug should be
replaced after about a month in operation or
earlier if necessary.
CAUTION! Always use the recommended
spark plug type! Use of the wrong spark
plug can damage the piston/cylinder.
0.024″(0.6 mm)
Spark arrestor mesh
WARNING: The inside of the
muffler contain chemicals that may
be carcinogenic. Avoid contact
with these elements in the event of
a damaged muffler.
CAUTION: Mufflers fitted with cata-
lytic converters get very hot during use
and remain so for some time after stop-
ping. This also applies at idle speed. Con-
tact can result in burns to the skin. Re-
member the risk of fire!
WARNING: Engine exhaust
fumes contain carbon monoxide,
which can cause carbon monoxide
poisoning. DO NOT start or run the
machine indoors, or anywhere 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 in-
doors or near combustible material!

English--- 18
115373927 Rev. 5 5/15/12
MAINTENANCE
Air filter
The air filter must be regularly cleaned to
remove dust and dirt in order to avoid:
SCarburetor malfunctions
SStarting problems
SLoss of engine power
SUnnecessary wear to engine parts
SExcessive fuel consumption
Clean the filter every 25 hours, or more
regularly if conditions are exceptionally
dusty.
Cleaning the air filter
Remove the air filter cover and take out the
filter. Wash it clean in warm, soapy water.
Rinse thoroughly. 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.
Bevel gear
(128L)
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.
The grease in the bevel gear does not nor-
mally need to be changed except if repairs
are carried out.
Maintenance schedule
Below you will find some general mainte-
nance instructions.
Daily maintenance
SCheck throttle trigger and throttle trigger
lockout function.
SCheck that the stop switch works
correctly.
SCheck that there are no fuel leaks from
the engine, tank or fuel lines.
SCheck that the cutter does not rotate
when the engine is idling.
SClean the outside of the machine.
SCheck that the harness is not damaged.
SCheck that the blade guard is not dam-
aged or cracked.
SReplace the blade guard if it is exposed to
impact or is cracked.
SA non--balanced trimmer head induces
heavy vibrations that may damage the
machine.
SCheck that nuts and screws are tight.
SCheck that the screws that hold the bevel
gear are tight.
SCheck that the trimmer head is tight.
Weekly maintenance
SCheck the starter and starter cord.
SClean the carburetor area.
SClean the outside of the spark plug. Re-
move it and check the electrode gap. Ad-
just the gap to 0.024″(0.6 mm), or
replace the spark plug. Use resistor spark
plug Champion RCJ--8Y or equivalent.
SClean the cooling fins on the cylinder and
check that the air intake near the starter
is not blocked.
SCheck that the bevel gear is filled with
grease up to 3/4 full. Use special grease.
SClean the air filter.
Monthly maintenance
SClean the fuel tank.
SClean the outside of the carburetor and
the space around it.
SClean the fan and the area around it.
SCheck fuel lines for cracks or other dam-
age. Change if necessary.
SChange the fuel filter in fuel tank.
SCheck the clutch, clutch springs and the
clutch drum for wear. Replace if neces-
sary.
SCheck electrical wires and connections.
SReplace the spark plug. Use resistor
spark plug Champion RCJ--8Y or equiva-
lent.
SChange the air filter.

English--- 19
115373927 Rev. 5 5/15/12
Trimmer Head Line Loading Instructions
20i
10i
3m
6m
123
45
678
9

English--- 20
115373927 Rev. 5 5/15/12
Plastic Blades (Tri Cut)
12
345
67
8