Husqvarna Chainsaw 128 C User Manual

S E R V I C E  
545196750  
OM, 128L/C , 2009-02, 545196750  
128 L, 128 C  
545 19 67-50  
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CONTENTS  
Category C = 50 hours, B= 125 hours, and  
A = 300 hours.  
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  
For reference, please fill out the following  
information that will be needed for future  
servicing of your trimmer:  
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  
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.  
Technical data . . . . . . . . . . . . . . . . . . . . 21  
WARRANTY STATEMENT . . . . . . . . . 22  
EMISSION CONTROL  
WARRANTY STATEMENT . . . . . . . . . 23  
Note the following before  
starting:  
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.  
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 re-  
pair establishment or individual.  
The Emissions Compliance Period referred  
to on the Emissions Compliance label indi-  
cates the number of operating hours for  
which the engine has been shown to meet  
Federal emissions requirements.  
For customer assistance, call:  
1-800-487-5951  
Contact us at our website:  
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KEY TO SYMBOLS  
Only intended for trimmer heads.  
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.  
Please read the operator’s manual  
carefully and make sure you  
understand the instructions  
before using the machine.  
Use unleaded or quality leaded  
gasoline and two--stroke oil  
mixed at a ratio of 2% (1:50).  
Always wear:  
S Hearing protection  
S Approved eye protection  
Other symbols/decals on the machine  
refer to special certification requirements  
for certain markets.  
Max. speed of output shaft, rpm  
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.  
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).  
Regular cleaning is required.  
Visual check.  
Arrows which show limits for  
handle positioning.  
Approved eye protection must  
always be used.  
Always wear approved protective  
gloves.  
Wear sturdy, non--slip boots.  
Only use non--metallic, flexible  
cutting attachments, i.e. trimmer  
heads with trimmer line.  
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SAFETY INSTRUCTIONS  
FIRST AID KIT  
Always have a first aid kit nearby.  
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  
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.  
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.  
GLOVES  
Gloves should be worn when necessary,  
e.g., when fitting cutting attachments.  
WARNING: Never use a machine  
that has faulty safety equipment!  
Carry out the inspection, mainte-  
nance and service routines listed in  
this section.  
HEARING PROTECTION  
Wear hearing protection that provides  
adequate noise reduction.  
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.  
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.  
A
BOOTS  
Wear sturdy, non--slip boots.  
B
Stop switch  
Make sure the engine stops when you push  
and hold the stop switch.  
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.  
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SAFETY INSTRUCTIONS  
Cutting attachment guard  
WARNING: Mufflers fitted with  
catalytic converters get very hot  
during use and remain so for some  
time after stopping. This also ap-  
plies at idle speed. Contact can re-  
sult in burns to the skin. Remember  
the risk of fire!  
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.  
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!  
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.  
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.  
Cutting equipment  
A trimmer head is intended for trimming  
grass.  
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.  
Muffler  
Checking, maintaining and  
servicing the machine’s  
safety equipment  
The muffler is designed to reduce the noise  
level and to direct the exhaust gases away  
from the operator.  
IMPORTANT!  
CAUTION! Muffler is fitted with a catalytic  
converter designed to reduce harmful ex-  
haust gases.  
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.  
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.  
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SAFETY INSTRUCTIONS  
Throttle lock--out  
Stop switch  
S Make sure the throttle control is locked  
at the idle setting when the throttle lock--  
out is released.  
S Start the engine and make sure the engine  
stops when you push and hold the stop  
switch.  
Cutting attachment guard  
S Press the throttle lock--out and make  
sure it returns to its original position  
when you release it.  
S Ensure that the guard is undamaged and  
is not cracked.  
S Check that the throttle control and  
throttle lock--out move freely and that the  
return springs work properly.  
S Replace the guard if it has been exposed  
to impact or is cracked.  
S Always use the recommended guard for  
the cutting attachment you are using. See  
section on “Technical data”.  
Muffler  
S Never use a machine that has a faulty  
muffler.  
S See 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”.  
S Regularly check that the muffler is securely  
attached to the machine.  
S The 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.  
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SAFETY INSTRUCTIONS  
Cutting equipment  
Trimmer head  
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.  
S Only use the recommended cutting at-  
tachments. See the section on “Technical  
data”.  
General rules:  
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.  
1. Only use cutting attachments with the  
guards we recommend! See the section  
on “Technical Data”.  
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.  
2. Check the cutting attachment for damage  
or cracks. A damaged cutting attachment  
should always be replaced.  
IMPORTANT!  
WARNING: Never use a machine  
with faulty safety equipment. The  
machine’s safety equipment must be  
checked and maintained as  
Always ensure the trimmer line is wound  
tightly and evenly around the drum, other-  
wise the machine will generate harmful  
vibration.  
described in this section.  
If your machine fails any of these  
checks contact your service agent to  
get it repaired.  
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.  
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.  
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SAFETY INSTRUCTIONS  
General safety precautions  
WARNING: A faulty cutting at-  
tachment may increase the risk of  
accidents.  
IMPORTANT!  
S The machine is only designed for trimming  
grass.  
Personal protection  
S The only accessories you can operate  
with this engine unit are the cutting at-  
tachments we recommend in the “Tech-  
nical data” section.  
S Never use wire, rope, string, etc.  
S Never 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.  
S Never use the machine in extreme weath-  
er conditions such as severe cold, very hot  
and/or humid climates.  
S Never use a machine that has been modi-  
fied in any way from its original specifica-  
tion.  
S Wear personal protective equipment. See  
instructions in the “Personal protective  
equipment” section.  
S 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 quali-  
fied specialists. See instructions in the  
“Maintenance” section.  
S 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.  
S Always wear boots and  
other equipment described  
in the “Personal protective  
equipment” section.  
S Always wear working  
clothes and heavy--duty  
long pants.  
S Never wear loose fitting  
clothes or jewelry.  
S Persons with long hair  
should (for personal safety)  
put their hair up.  
Safety instructions regarding the  
surroundings  
S Never allow children to use the machine.  
S Ensure no one comes closer than 50 feet  
(15 meters) when working.  
S Never 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  
S The machine operator must ensure that  
no people or animals come closer than  
50 feet (15 meters) while working.  
S Stay clear of spinning line.  
S Secure or remove loose clothing or cloth-  
ing with loosely hanging ties, straps, tas-  
sels, etc. They can be caught in moving  
parts.  
S Being fully covered also helps protect you  
from debris and pieces of toxic plants  
thrown by spinning line.  
S Keep handles free of oil and fuel.  
S Always keep the engine on the right hand  
side of your body.  
S Hold the unit firmly with both hands.  
S Keep trimmer head below waist level and  
away from all parts of your body. Do not  
raise engine above your waist.  
S Keep all parts of your body away from  
muffler and spinning line. Keep engine be-  
low waist level. A hot muffler can cause  
serious burns.  
S Keep firm footing and balance. Do not  
overreach or use from unstable surfaces  
such as ladders, trees, steep slopes, roof-  
tops, etc.  
S Use only in daylight or good artificial light.  
S Use only for jobs explained in this manual.  
S Inspect 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.  
S Keep 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.  
S Check 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.  
S Check the cutting head  
for cracks or any other  
damage.  
S Ensure the trimmer guard  
is mounted and not  
damaged.  
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SAFETY INSTRUCTIONS  
S Check that the trimmer head and guard  
S Never start the machine:  
are correctly secured.  
S If you have spilled fuel on it. Wipe off  
the spillage and allow remaining fuel to  
evaporate.  
S When adjusting the carburetor, make sure  
the lower end is supported and that no one  
is in the immediate vicinity.  
S Make sure the cutting head does not rotate  
when idling.  
S Make 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.  
S Only use the machine for the purpose for  
which it was intended.  
S 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.  
S If the machine is leaking fuel. Check  
regularly for leaks from the fuel cap  
and fuel lines.  
S Avoid all skin contact with fuel. Fuel is  
a skin irritant and may even cause  
skin changes.  
Transporting and storage  
Starting  
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.  
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.  
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 gas 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 Ensure that all of the engine covers and  
housings are properly fitted before the unit  
is started.  
S Never start or attempt to run the unit with  
the clutch, clutch drum, clutch cover, or  
driveshaft removed.  
WARNING: Take care when han-  
dling fuel. Bear in mind the risk of  
fire, explosion and inhaling fumes.  
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 equip-  
ment.  
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.  
S See the “Starting and Stopping” section for  
complete instructions.  
Fuel safety  
You must understand the difference between  
forestry clearing, grass clearing and grass  
trimming before use.  
S Always use a fuel container with an anti--  
spill valve.  
S Never refuel the machine while the engine  
is running.  
Basic safety rules  
S Always stop the engine and let it cool for a  
few minutes before refueling.  
S Make sure there is plenty of ventilation  
when refueling or mixing fuel (gasoline and  
2--stroke oil).  
S Move the machine at least 10 feet (3 me-  
ters) from the refueling point before start-  
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.  
Min. 10 ft.  
(3 m)  
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SAFETY INSTRUCTIONS  
S CAUTION! Do not use the machine  
unless you are able to call for help in  
the event of an accident.  
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.  
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.  
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.  
Clearing  
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.  
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.  
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 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.  
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.  
S It is recommended that the engine not  
be operated for longer than 1 minute at  
full throttle.  
Cutting  
WARNING: Sometimes branches  
or grass get caught between the  
guard and cutting attachment.  
Always stop the engine before  
cleaning.  
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.  
Grass trimming using a trimmer head  
Trimming  
S Hold 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.  
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.  
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.  
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SAFETY INSTRUCTIONS  
Sweeping  
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 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.  
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 50 feet (15 meters).  
Stop the machine immediately if  
anyone approaches.  
S When cutting and sweeping you should  
use full throttle to obtain the best results.  
English---11  
545196750 Rev. 3 2/17/09  
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KNOW YOUR TRIMMER  
2
1
3
6
128L  
8
10  
11  
9
5
4
16  
7
128C  
1
15  
13  
14  
12  
4
17  
1
18  
Know your trimmer  
1. Trimmer head  
2. Grease filler cap  
3. Bevel gear  
4. Cutting attachment guard  
5. Shaft  
6. Loop handle  
7. Throttle control  
8. Stop switch  
9. Throttle lock--out  
10.Cylinder cover  
11. Starter handle  
12. Fuel tank  
13. Choke control  
14. Primer bulb  
15. Air filter cover  
16. Handle adjustment  
17. Drive disc  
19  
18. 2--stroke engine oil  
19. Operator’s manual (EPA)  
English---12  
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ASSEMBLY  
NOTE: Make sure unit is assembled cor-  
Fitting the trimmer guard and  
trimmer head (Model 128C)  
rectly as shown in this manual.  
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 wing nut (B).  
B
A
S Fit twing  
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---13  
545196750 Rev. 3 2/17/09  
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FUEL HANDLING  
S Always start by flling half the amount of the  
Fuel mixture  
gasoline to be used. Then add the entire  
amount of oil. Mix (shake) the fuel mixture.  
Add the remaining amount of gasoline.  
S Mix (shake) the fuel mixture thoroughly  
before filling the machine’s fuel tank.  
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.  
WARNING: Always ensure  
there is adequate ventilation when  
handling fuel.  
Gasoline  
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.  
CAUTION! Always use high quality  
unleaded gasoline.  
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.  
S This eniiiioperate on  
unleaded gasoline.  
Fueling  
S The 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.  
WARNING: Taking the following  
precautions, will lessen the risk of  
fire:  
S When working at continuous high revs a  
higher octane rating is recommended.  
Do not smoke or place hot objects  
near fuel.  
Two--stroke oil  
S For great results and performance use  
HUSQVARNA two--stroke oil, which is  
specially formulated for our two--stroke  
engines. Mixture 1:50 (2%).  
Always shut off the engine before  
refueling.  
Always stop the engine and let it  
cool for a few minutes before refu-  
elling.  
S To 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%).  
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.  
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.  
Two -stroke oil  
Gasoline  
2% (1:50)  
U.S. gallon  
1
2 1/2  
5
U.S. fl. oz.  
2 1/2  
6 1/2  
Min. 10 ft.  
(3 m)  
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.  
12 7/8  
Mixing  
S Always mix the gasoline and oil in a  
clean container intended for fuel.  
English---14  
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STARTING AND STOPPING  
Cold engine  
Check before starting  
Primer bulb: Press the primer bulb 10  
times until fuel begins to fill the bulb. The  
primer bulb need not be completely filled.  
S Inspect 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.  
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  
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.  
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).  
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---15  
545196750 Rev. 3 2/17/09  
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STARTING AND STOPPING  
Warm engine  
Stopping  
With a warm engine, move the blue engine  
Stop the engine by pushing and holding  
the stop switch in the STOP position until  
choke lever to the ½ position. Pull starter  
rope until engine runs. Move the blue engine the engine stops.  
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.  
MAINTENANCE  
The owner is responsible for the perfor-  
mance of all required maintenance as  
defined in the operator’s manual.  
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.  
WARNING: Improper mainte-  
nance could result in serious engine  
damage or in serious injury.  
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.  
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.  
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.  
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.  
Function  
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.  
Idle Speed  
Screw--T  
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.  
English---16  
545196750 Rev. 3 2/17/09  
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MAINTENANCE  
WARNING: If the idle speed can-  
WARNING: Mufflers fitted with  
catalytic converters get very hot  
during use and remain so for some  
time after stopping. This also ap-  
plies at idle speed. Contact can re-  
sult in burns to the skin. Remember  
the risk of fire!  
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.  
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!  
CAUTION! Muffler is fitted with a catalytic  
converter designed to reduce harmful ex-  
haust gases.  
Spark plug  
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.  
The spark plug condition is influenced by:  
S Incorrect carburetor adjustment.  
S An incorrect fuel mixture (too much or in-  
correct type of oil).  
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  
0.024(0.6 mm). The spark plug should be  
replaced after about a month in operation or  
earlier if necessary.  
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. If the mesh is fre-  
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! Always use the recommended  
spark plug type! Use of the wrong spark  
plug can damage the piston/cylinder.  
Muffler bolts  
Spark arrestor mesh  
0.024(0.6 mm)  
CAUTION! Never use a machine that has  
a faulty or loose muffler. Ensure the muffler  
bolts are tight.  
English---17  
545196750 Rev. 3 2/17/09  
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MAINTENANCE  
Air filter  
Maintenance schedule  
Below you will find some general mainte-  
nance instructions.  
Daily maintenance  
S Check throttle trigger and throttle trigger  
lockout function.  
The air filter must be regularly cleaned to  
remove dust and dirt in order to avoid:  
S Carburetor malfunctions  
S Check that the stop switch works  
correctly.  
S Starting problems  
S Check that there are no fuel leaks from  
the engine, tank or fuel lines.  
S Check that the cutter does not rotate  
when the engine is idling.  
S Loss of engine power  
S Unnecessary wear to engine parts  
S Excessive fuel consumption  
S Clean the outside of the machine.  
S Check that the harness is not damaged.  
S Check that the blade guard is not dam-  
aged or cracked.  
S Replace the blade guard if it is exposed to  
impact or is cracked.  
S A non--balanced trimmer head induces  
heavy vibrations that may damage the  
machine.  
S Check that nuts and screws are tight.  
S Check that the screws that hold the bevel  
gear are tight.  
Clean the filter every 25 hours, or more  
regularly if conditions are exceptionally  
dusty.  
S Check that the trimmer head is tight.  
Cleaning the air filter  
Weekly maintenance  
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.  
S Check the starter and starter cord.  
S Clean the carburetor area.  
S Clean 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.  
S Clean the cooling fins on the cylinder and  
check that the air intake near the starter  
is not blocked.  
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)  
S Check that the bevel gear is filled with  
grease up to 3/4 full. Use special grease.  
S Clean the air filter.  
Monthly maintenance  
S Clean the fuel tank.  
S Clean the outside of the carburetor and  
the space around it.  
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.  
S Clean the fan and the area around it.  
S Check fuel lines for cracks or other dam-  
age. Change if necessary.  
S Change the fuel filter in fuel tank.  
S Check the clutch, clutch springs and the  
clutch drum for wear. Replace if neces-  
sary.  
S Check electrical wires and connections.  
S Replace the spark plug. Use resistor  
spark plug Champion RCJ--8Y or equiva-  
lent.  
S Change the air filter.  
The grease in the bevel gear does not nor-  
mally need to be changed except if repairs  
are carried out.  
English---18  
545196750 Rev. 3 2/17/09  
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