INSTRUCTION MANUAL
IMPORTANT INFORMATION: Please read these instructions carefully and make
sure you understand them before using this unit. Retain these instructions for future
reference.
GB
FR
MANUEL D’INSTRUCTIONS
RENSEIGNEMENTS IMPORTANTS: Avant d’utiliser cet appareil, veuillez lire
atentivement les instructions et assurez--vous de les avoir comprises. Conservez
les instructions pour référence ultérieure.
BETRIEBSANWEISUNG
WICHTIGE INFORMATION: Lesen Sie diese Hinweise zur Handhabung des
Geräts aufmerksam durch. Verwenden Sie es erst, wenn Sie sicher sind, daß Sie
alle Anweisungen verstanden haben und gut aufbewahren.
DE
ES
MANUAL DE INSTRUCCIONES
INFORMACIÓN IMPORTANTE: Lea atentamente las instrucciones y
asegúrese de entenderlas antes de utilizar esta aparato. Conserve las instruc-
ciones para la referencia en el futuro.
115154526 Rev. 2 1/31/10 BRW
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IDENTIFICATION OF SYMBOLS
A.
B.
C.
D.
F.
G.
H.
I.
E.
J.
K.
A. WARNING! This brushcutter can be dangerous! Careless or improper use can
cause serious or even fatal injury.
B. Read and understand the instruction manual before using the brushcutter.
C. Always use:
Ear protection, eye protection, head protection, boots, and gloves.
D. DANGER! Blade can thrust violently away from material it does not cut. Blade thrust
can cause amputation of arms or legs. Keep people and animals 15 meters away.
E. WARNING! Blade/trimmer line can throw objects violently. You and others can be
blinded or injured. Always wear eye protection and leg protection.
F. The operator of the machine must insure that no one comes within a 15 meter radius
while working. When several operators are working within the same area a safety dis-
tance of at least 15 meters must be observed.
G. Use unleaded or quality leaded petrol and two--stroke oil mixed at a ratio of 2.5%.
H. Handlebar to be positioned only below the arrow.
I. Engine ON/STOP (I/0) Switch.
J. Guaranteed sound power level according to Directive 2000/14/EC
K. Maximum rotational frequency of the spindle, rpm
SAFETY RULES
WARNING: When using gardening
appliances, basic safety precautions should al-
ways be followed to reduce the risk of fire and
INSTRUCTION
MANUAL
SAFETY INFORMATION
ON THE UNIT
serious injury. Read and follow all instructions.
DANGER: This power tool can be dan-
gerous! This unit can cause serious injury in-
cluding amputation or blindness to the operator
and others. The warnings and safety instruc-
tions in this manual must be followed to provide
reasonable safety and efficiency in using the
unit. The operator is responsible for following the
warnings and instructions in this manual and on
the unit. Read the entire instruction manual be-
fore assembling and using the unit! Restrict the
use of this unit to persons who read, under-
stand, and follow the warnings and instructions
in this manual and on the unit. Never allow chil-
dren to operate this unit.
DANGER: Blade can thrust violently
away from material it does not cut. Blade
thrust can cause amputation of arms or legs.
Keep people and animals 15 meters away.
WARNING: Blade/trimmer line can
throw objects violently. You andothers can be
blinded or injured. Wear safety glasses and
leg protection.
3
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S Dress properly. Always wear safety
glasses or similar eye protection when op-
erating, or performing maintenance, on
your unit (safety glasses are available).
Eye protection should be marked Z87.
S Always wear a helmet if the trees to be
cleared are taller than 2 meters.
S Always wear face or dust mask if operation
is dusty.
S Always wear heavy, long pants, long
sleeves, boots, and gloves. Wearingsafety
leg guards is recommended.
WARNING: Hazard zone for thrown
objects. Blade/Trimmer line can throw objects
violently. Others can be blinded or injured.
Keep people and animals 15 meters away.
S Always wear foot protection. Do not go
barefoot or wear sandals. Stay clear of
blade/spinning line.
zard Zone
S Secure hair above shoulder length. Secure
or remove loose clothing or clothing with
loosely hanging ties, straps, tassels, 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 Stay alert. Do not operate this unit when you
are tired, ill, upset or under the influence of al-
cohol, drugs, or medication. Watch what you
are doing; use common sense.
S Wear hearing protection. Long or continu-
ous exposure to high noise levels may
cause permanent hearing impairment.
S Never start or run inside a closed room or
building. Breathing exhaust fumes can kill.
S Keep handles free of oil and fuel.
S Always use the handlebar and a properly
adjusted shoulder harness with a blade
(see ASSEMBLY).
WARNING: Do not use trimmer head
as a fastening device for the blade.
UNIT / MAINTENANCE SAFETY
WARNING: Stop unit and disconnect
the spark plug before performing mainte-
nance (except carburetor adjustments).
S Throw away blades that are bent, warped,
cracked, broken, or damaged in any other
way. Replace trimmer head parts that are
cracked, chipped, broken, or damaged in
any other way before using the unit.
S Maintain unit according to recommended
procedures. Keep blade sharp. Keep cut-
ting line at the proper length.
WARNING: The blade continues to
spin after the throttle is released or, engine is
turned off. The coasting blade can throw objects
or seriously cut if accidentally touched. Stop the
blade by contacting the right hand side of the
coasting blade with material already cut.
Stop coasting
blade by contact
with cut material.
S Use only 2,4 mm diameter McCulloch
brand replacement line. Never use wire,
rope, string, etc.
S Install required shield properly before using
the unit.
S Use only specified blade or trimmer head;
make sure it is properly installed and se-
curely fastened.
S Never start engine with clutch shroud re-
moved. The clutch can fly off and cause se-
rious injury.
OPERATOR SAFETY
WARNING: This machine produces
an electromagnetic field during operation. Under
some circumstances, this field may interfere
with active or passive medical implants. To re-
duce the risk of serious or fatal injury, we recom-
mend persons with medical implants to consult
their physician and the medical implant
manufacturer before operating this machine.
S Besureblade or trimmer head stops turning
when engine idles.
S Make carburetor adjustments with the low-
er end supported to prevent blade or trim-
mer line from contacting any object. Hold
unit by hand; do not use the shoulder har-
ness for support.
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S Keep others away when making carbure-
tor adjustments.
S Cut from your left to your right. Cutting on
right side of the shield will throw debris
away from the operator.
S Use only recommended McCulloch accesso-
ries and replacement parts.
S Use only in daylight or good artificial light.
S Use only for jobs explained in this manual.
S Have all maintenance and service not ex-
plained in this manual performed by your au-
thorized service dealer.
TRANSPORTING AND STORAGE
S Allow the engine to cool; secure unit before
storing or transporting in vehicle.
S Empty fuel tank before storing or transporting
the unit. Use up fuel left in the carburetor by
starting engine and letting it run until it stops.
S Store unit and fuel in an area where fuel va-
pors cannot reach sparks or open flames
from water heaters, electric motors or
switches, furnaces, etc.
S Store unit so line limiter cannot accidentally
cause injury. Unit can be hung by the shaft.
S Always install transport guard on blade be-
fore transporting or strorage.
S Store the unit out of the reach of children.
S Secure the machine during transport.
FUEL SAFETY
S Mix and pour fuel outdoors.
S Keep away from sparks or flames.
S Use a container approved for fuel.
S Do not smoke or allow smoking near fuel or
the unit.
S Avoid spilling fuel or oil. Wipe up all fuel spills.
S Move at least 3 meters away from fueling
site before starting engine.
S Stop engine and allow to cool before re-
moving fuel cap.
S Always store petrol in a container approved
for flammable liquids.
CUTTING SAFETY
SPECIAL NOTICE: Exposure to vibrations
through prolonged use of petrol powered hand
tools could cause blood vessel or nerve dam-
age in the fingers, hands, and joints of people
prone to circulation disorders or abnormal swell-
ings. Prolonged use in cold weather has been
linked to blood vessel damage in otherwise
healthy people. If symptoms occur such as
numbness, pain, loss of strength, change in skin
color or texture, or loss of feeling in the fingers,
hands, or joints, discontinue the use of this tool
and seek medical attention. An anti-vibration
system does not guarantee the avoidance of
these problems. Users who operate power tools
on a continual and regular basis must monitor
closely their physical condition and the condition
of this tool.
WARNING: Inspect the area to be cut
before each use. Remove objects (rocks,
broken glass, nails, wire, string, etc.) which
can be thrown or become entangled in the
blade or trimmer head.
S Keep others including children, animals,
bystanders, and helpers at least 50 feet (15
meters) away. Stop engine immediately if
you are approached.
S Always keep engine on the right--hand side
of your body.
S Hold the unit firmly with both hands.
S Keep firm footing and balance. Do not
overreach.
S Keep blade or trimmer head below waist
level. Do not raise engine above your waist.
S Keep all parts of your body away from blade,
trimmer head, and muffler when engine is
running. A hot muffler can cause serious
burns.
ASSEMBLY
CARTON CONTENTS
Check carton contents against the following list:
S Brushcutter
WARNING: Always stop unit and dis-
connect spark plug before performing any as-
sembly procedures.
S Blade
S Cupped washer
S Large nut for installing blade
S Trimmer head
WARNING: If received assembled,
repeat all steps to ensure your unit is properly
assembled and all fasteners are secure.
Examine parts for damage. Do not use dam-
aged parts.
S Combination shield
S Bolt
S Handlebar
S Handlebar bracket cover
S Handlebar bracket cover screws (2)
S Upper shoulder harness clamp
S Lower shoulder harness clamp
S Shoulder harness clamp screws (2)
S Shoulder harness
It is normal for the fuel filter to rattle in the empty
fuel tank.
Finding fuel or oil residue on muffler is normal
due to carburetor adjustments and testing done
by the manufacturer.
TOOLS REQUIRED
S Hex wrench
S Hex wrench (provided)
S Wrench
S Adjustable wrench
S Transport guard
S Phillips screwdriver
S Throttle cable clip
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2. Position the lower shoulder harness
clamp under the shaft and align the upper
and lower clamp screw holes. Clamp
must be fittle above the arrow on the shaft
(see illustration above).
NOTE: Fit throttle wire in groove of lower
harness clamp before tightening screws.
3. Insert two screws into the screw holes.
4. Secure shoulder harness clamp by tight-
ening screws with a hex wrench.
ATTACHING THE HANDLEBAR
DANGER: To avoid serious injury, the
barrier portion of the handlebar must be installed
as shown to provide a barrier between operator
and the spinning blade.
1. Remove the screw at the rear of the
throttle handle.
2. Slide the throttle handle onto the right side
of the handlebar (see illustration).
3. Align the screw hole in the throttle handle
with the hole in the handlebar.
SHOULDER HARNESS
ADJUSTMENT
4. Refit the screw inthe hole in the rear of the
throttle handle.
At the front of the shoulder harness is an easily
accessible quick release. Use the quick release
in any emergency situation that requires you to
free yourself from the machine and harness.
5. Screw the screw through the handle and
handlebar. Tighten the screw.
6. Fit the mounting components as shown.
1. Put on the harness. Adjust the harness for
the best working position.
2. Tension the side straps so that the weight
is evenly distributed across both shoul-
ders.
NOTE: It may be necessary to relocate the
shoulder harness clamp on the shaft for prop-
er balancing of unit.
7. The handlebar mounting must be fitted
between the arrows on the shaft.
8. Tighten the screws with a hex wrench.
ASSEMBLY OF SHOULDER
SHOULDER HARNESS
ADJUSTMENT
HARNESS
FOR BALANCE
WARNING: When using a brushcut-
ter, it must always be hooked securely to the
shoulder harness. Otherwise, you will be un-
able to safely control the brushcutter. This
can result in injury to yourself or others.
Proper shoulder harness and handlebar adjust-
ments must be made with the engine complete-
ly stopped before using unit. A well--adjusted
shoulder harness and machine makes work
much easier.
15 cm
below
waist
10 -- 30 cm
above
ground
76 cm
ATTACHING SHOULDER HARNESS
CLAMP (if not already attached)
1. Place the upper shoulder harness clamp
over the shaft.
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ASSEMBLY INFORMATION --
TRIMMER HEAD
TRIMMER
HEAD
76 cm
NOTE: Remove the blade before attaching the
trimmer head. To remove blade, align hole in
the dust cup with the hole in the side of the
gearbox by rotating the blade. Insert a small
screwdriver into aligned holes. This will keep
the shaft from turning while loosening the blade
nut. Remove blade nut by turning clockwise.
Remove the screwdriver. Remove both wash-
ers and blade. See INSTALLATION OF THE
METAL BLADE for illustrations. Be sure to store
all parts and instructions for future use.
ATTACHING THE SHIELD
WARNING: The shield must be prop-
erly installed. The shield provides partial
protection to the operator and others from the
risk of thrown objects, and is equipped with a
line limiter blade which cuts excess line to the
proper length. The line limiter blade (on un-
derside of shield) is sharp and can cut you.
1. Insert bracket into slot on shield.
2. Pivot shield to align holes in shield and
bracket.
INSTALLATION OF THE TRIMMER
HEAD
NOTE: If your unit has a plastic cover over
the threads on the threaded shaft, removethe
covering to expose the threads. Beforeinstal-
ling the trimmer head, make sure the dust cup
and retaining washer are positioned on the
gearbox.
Bracket
Shield
ot
Shield
3. Secure shield to bracket with bolt.
Dust cup
s
Retaining washer
NOTE: Make sure all parts are properly
installed as shown in the illustration before
installing the trimmer head.
1. Align hole in the dust cup with the hole in the
side of the gearbox by rotating the dust cup.
2. Insert a small screwdriver into aligned
holes. This willkeep the shaft fromturning
while tightening trimmer head.
3. While holding the screwdriver in position,
thread trimmer head onto the shaft in the
direction shown on the decal (counter-
clockwise). Tighten until secure.
Bolt
CONFIGURING YOUR UNIT
You can configure your unit using a cutting head
for grass and light weeds, or a weed blade for
cutting grass, weeds, and brush up to 1 cm in
diameter. To assemble your unit, go to the sec-
tion for the desired configuration and follow the
instructions.
NOTE: The retaining washer must be posi-
tioned with the raised section facing toward the
gearbox.
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ASSEMBLY INFORMATION -- WEED
BLADE
Gearbox
Dust cup
Shield
WEED
BLADE
Threaded
shaft
s
Retaining washer
Blade
NOTE: Remove the trimmer head before
installing the weed blade. To remove the trimmer
head, align hole in the dust cup with the hole in
the side of the gearbox by rotating the dust cup.
Insert a small screwdriver into aligned holes.
This will keep the shaft from turning while loos-
ening the trimmer head. Remove the trimmer
head by turning clockwise. Remove the screw-
driver. See INSTALLATION OF THE CUTTING
HEAD for illustrations. Be sure to store all parts
and instructions for future use. Never use the
trimmer head with the metal blade installed.
Cupped washer
Nut
Wrench
NOTE: Make sure all parts are in place as il-
lustrated, and the blade is sandwiched between
the dust cup and the retaining washer. There
should be no space between the blade and the
dust cup or the retaining washer.
6. Align hole in dust cup with hole in side of
gearbox by rotating the blade.
INSTALLATION OF THE METAL
BLADE
7. Insert a small screwdriver into aligned
holes. This willkeep the shaft fromturning
while tightening the blade nut.
WARNING: Wear protective gloves
when handling or performing maintenance on
the blade to avoid injury. The blade is sharp and
can cut you even when it is not moving.
8. Tighten blade nut firmly with a wrench (pro-
vided) while holding screwdriver in position.
9. Remove the screwdriver.
10. Turn blade by hand. If the blade binds
against the shield, or appears to be un-
even, the blade is not centered, and you
must reinstall.
WARNING: Do not use any blades, or
fastening hardware other than the washers and
nuts shown in the following illustrations. These
parts must be provided by McCulloch and
installed as shown below. Failure to use proper
parts can cause the blade to fly off and seriously
hurt you or others.
NOTE: The dust cup is located on the gearbox
shaft and not in the parts bag. All other fasten-
ers mentioned in the following assembly steps
are in the parts bag.
1. Install the blade and the retaining washer
over the threaded shaft.
NOTE: To remove blade, insert screwdriver
into aligned holes. Unthread the nut and remove
parts. Be sure to store parts and instructions for
future use.
ATTACHING THE TRANSPORT
GUARD
NOTE: The transport guard must always be
attached to the blade when themachine is be-
ing transported or in storage.
1. Remove ends of wire retainer from the
clips on the transport guard.
2. Make sure the raised part of the retaining
washer is facing the gearbox and the raised
area fits into the hole in the center of the
blade.
2. Lift wire retainer and position blade in
transport guard.
3. Place wire retainer over blade and insert
both ends of wire retainer back into clips.
3. Slide the blade and retaining washer onto
the shaft of the gearbox.
4. Place the cupped washer onto the shaft.
Make sure the cupped side of the washer
is toward the blade.
Wire reta
ransport
uard
5. Install the blade nut by threading onto the
shaft counterclockwise.
Clip
8
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OPERATION
STARTING A COLD ENGINE (or a
WARNING: Be sure to read the fuel
information in the safety rules before you be-
gin. If you do not understand the safety rules,
do not attempt to fuelyour unit. Contact an au-
thorized service dealer.
warm engine after running out of fuel)
Starting position
FUELING ENGINE
WARNING: Remove fuel cap slowly
when refueling.
This engine is certified to operate on unleaded
petrol. Before operation, petrol must be mixed
with a good quality 2-cycle air-cooled engine
oil. We recommend McCulloch brand oil
mixed at a ratio of 40:1 (2.5%). A 40:1 ratio is
obtained by mixing 5 liters of unleaded petrol
with 0,125 liter of oil. DO NOT USE automo-
tive oil or boat oil. These oils will cause engine
damage. When mixing fuel, follow instruc-
tions printed on oil container. Once oil is add-
ed to petrol, shake container momentarily to
assure that the fuel is thoroughly mixed. Al-
ways read and follow the safety rules relating
to fuel before fueling your unit.
Starter Handle
Primer Bulb
Muffler
Start
Lever
NOTE: The throttle lock--out is designed to
prevent unintentional use of the throttle trig-
ger. The lock--out must be pressed with the
palm of your hand as you grip the throttle han-
dle before the trigger can be used. DO NOT
squeeze the throttle trigger until the engine
has started and runs.
1. Set unit on a flat surface.
2. Move ON/STOP (I/0) switch to the ON (I)
position.
3. Slowly press the primer bulb 6 times.
4. Move the start lever to the START position.
5. Pull starter rope handle sharply until en-
gine starts and runs.
6. Allow unit to run for 10--15 seconds, then
fully squeeze the throttle trigger to disen-
gage the starting system.
IMPORTANT
Experience indicates that alcohol blended fuels
(called gasohol or using ethanol or methanol)
can attract moisture which leads to separation
and formation of acids during storage. Acidic
gas can damage the fuel system of an engine
while in storage. To avoid engine problems,
empty the fuel system before storage for 30
days or longer. Drain the gas tank, start the en-
gine and let it run until the fuel lines and carbure-
tor are empty. Use fresh fuel next season. Nev-
er use engine or carburetor cleaner products in
the fuel tank or permanent damage may occur.
HOW TO STOP YOUR UNIT
S To stop the engine, move the ON/STOP
(I/0) switch to the STOP (0) position.
ON/STOP (I/0)
STARTING A WARM ENGINE
1. Move ON/STOP (I/0) switch to the ON (I)
position.
switch
Throttle lock--out
2. Pull starter rope sharply until engine
starts and runs.
NOTE: Normally, the warm starting procedure
can be used within 5 -- 10 minutes after the unit
is turned off. If the unit sits for more than 10 min-
utes without being run, it will be necessary to
start the unit by following the steps under
STARTING A COLD ENGINE or following the
starting instruction steps shown on the unit.
STARTING A FLOODED ENGINE
Move the start lever to the RUN position and
fully squeeze throttle trigger. Pull the starter
handle repeatedly while squeezing throttle
trigger until engine starts and runs. This could
require pulling the starter handle many times,
depending on how badly the unit is flooded.If
the unit still doesn’t start, refer to TROUBLE-
SHOOTING TABLE.
HOW TO START YOUR UNIT
WARNING: Avoid any contact with the
muffler. A hot muffler can cause serious burns.
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can break off during cutting and become a dan-
gerous missile that can cause serious injury.
OPERATING POSITION
CUTTING METHODS
Safety helmet
tion
ALWAYS WEAR:
Hearing
protecti
WARNING: Use minimum speed and
do not crowd the line when cutting around
hard objects (rock, gravel, fence posts, etc.),
whichcandamage the trimmer head, become
entangled in the line, or be thrown causing a
serious hazard.
S The tip of the line does the cutting. You will
achieve the best performance and minimum
line wear by not crowding the line into the
cutting area. The right and wrong ways are
shown below.
Heavy,
long pant
Boo
Tip of line does
the cutting.
Line crowded into
work area.
Cut from your left to your right.
When operating unit, clip shoulder harness
onto clamp, stand as shown andcheck for the
following:
S Wear eye protection and heavy clothing.
S Extend your left arm and hold handlebar
grip with your left hand.
S Hold throttle grip with your right hand with
finger on throttle trigger.
Right
Wrong
S Keep unit below waist level.
S Maintain full weight of tool on both shoulders.
S Without bending over, keep the blade or
trimmer head near and parallel to the ground
and not crowded into material being cut.
S The line will easily remove grass and weeds
from around walls, fences, trees and flower
beds, but it also can cut the tender bark of
trees or shrubs and scar fences.
OPERATING INSTRUCTIONS FOR
USE WITH TRIMMER HEAD
S For trimming or scalping, use less than full
throttle to increase line life and decrease head
wear, especially:
S During light duty cutting.
WARNING: Always wear eye protec-
tion. Never lean over the trimmer head. Rocks
or debris can ricochet or be thrown into eyes
and face and cause blindness or other serious
injury.
S Near objects around which the line can
wrap such as small posts, trees or fence
wire.
S For mowing or sweeping, use full throttle for a
good clean job.
Before trimming, bring engine to a speed suffi-
cient to cut material to be trimmed.
Do not run the engine at a higher speed than
necessary. The cutting line will cut efficiently
when the engine is run at less than full throttle.
At lower speeds, there is less engine noise and
vibration. The cutting line will last longer and will
be less likely to “weld” onto the spool.
Always release the throttle trigger and allow
the engine to return to idle speed when not
cutting.
TRIMMING -- Hold the bottom of the trimmer
head about 8 cm above the ground and at an
angle. Allow only the tip of the line to make
contact. Do not force trimmer line into work
area.
Trim
To stop engine:
S Release the throttle trigger.
S Move ON/STOP (I/0) switch to the STOP (0)
position.
8 cm above
ground
TRIMMER LINE ADVANCE
Advance line by tapping the bottom of the cut-
ting head lightly on the ground while engine is
running at full speed. The metal line limiter
blade attached to the guard will cut the line to
the proper length.
SCALPING -- The scalping technique re-
moves unwanted vegetation down to the
ground. Hold the bottom of the trimmer head
about 8 cm above the ground and at an angle.
Allow the tip of the line to strike the ground
around trees, posts, monuments, etc. This
technique increases line wear.
WARNING: Use only 2,4 mm diameter
line. Other sizes of line will not advance properly
and can cause serious injury. Do not use other
materials such as wire, string, rope, etc. Wire
10
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S WHEN BLADE THRUST OCCURS --
Blade Thrust can occur without warning if
the blade snags, stalls, or binds. This is
more likely to occur in areas where it is
difficult to see the material being cut. By
using the unit properly, the occurrence of
blade thrust will be reduced and the
operator will be less likely to lose control.
Scalping
MOWING -- Your trimmer is ideal for mowing
in places conventional lawn mowers cannot
reach. In the mowing position, keep the line
parallel to the ground. Avoid pressing the
head into the ground as this can scalp the
ground and damage the tool.
Mowin
S Cut only grass, weeds, and woody brush up
to 1 cm in diameter with the weed blade. Do
not let the blade contact material it cannot cut
such as stumps, rocks, fences, metal, etc., or
clusters of hard, woody brush having a
diameter greater than 1 cm.
S Keep the blade sharp. A dull blade is more
likely to snag and thrust.
S Cut only at full throttle. The blade will have
maximum cutting power and is less likely to
bind or stall.
SWEEPING -- The fanning action of the rotat-
ing linecan beusedto blow away loosedebris
from an area. Keep the line parallel to and
above the area surface and swing the tool
from side to side.
S “Feed” the blade deliberately and not too
rapidly. The blade can thrust away if it is fed
too rapidly.
S Cut only from your left to your right. Cutting on
right side of the shield will throw debris away
from the operator.
Sweeping
S Use the shoulder harness and keep a firm
grip on the unit with both hands. A properly
adjusted shoulder harness will support the
weight of the unit, freeing your arms and
hands to control and guide the cutting motion.
S Keep feet comfortably spread apart and
braced for a possible sudden, rapid thrust of
unit. Do not overreach. Keep firm footing and
balance.
S Keep blade below waist level; it will be
easier to maintain control of unit.
OPERATING INSTRUCTIONS FOR
USE WITH WEED BLADE
S Do not raise the engine above your waist as
the blade can come dangerously close to
your body.
S Blade Thrust is a reaction that only occurs
when using a bladed unit. This reaction can
cause serious injury such as amputation.
Carefully study this section. It is important that
you understand what causes blade thrust,
how you can reduce the chance of its
occurring, and how you can remain in control
of unit if blade thrust occurs.
S Do not swing unit with such force that you
are in danger of losing your balance.
Bring the engine to cutting speed before enter-
ing the material to be cut. If the blade does not
turn when you squeeze the throttle trigger, make
sure shaft is fully inserted into the engine.
Always release the throttle trigger and allow
engine to return to idle speed when not cut-
ting. The blade should not turn while the en-
gine is running at idle. If the bladeturns at idle,
do not use your unit. Refer to the CARBURE-
TOR ADJUSTMENT section or contact your
authorized service dealer.
S WHAT CAUSES BLADE THRUST -- Blade
Thrust can occur when the spinning blade
contacts an object that it does not cut. This
contact causes the blade to stop for an instant
and then suddenly move or “thrust” away
from the object that was hit. The “thrusting”
reaction can be violent enough to cause the
operator to be propelled in any direction and
lose control of the unit. The uncontrolled unit
can cause serious injury if the blade contacts
the operator or others.
S Maintain good firm footing while using the
unit. Do this by planting feet firmly in a
comfortable apart position.
S Cut while swinging the upper part of your
body from left to right.
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S As you move forward to the next area to cut,
be sure to maintain your balance and footing.
WARNING: The operator or others
must not try to clear away cut material withthe
engine running or the blade turning to avoid
serious injury. Stop engine and blade before
removing materials wrapped around blade or
shaft.
RECOMMENDED CUTTING POSITION
2 o’clock
Cut using the 2
o’clock to 4 o’clock
position of the
blade
4 o’clock
MAINTENANCE
The life span of the machine can be reduced
and the risk of accidents can increase if ma-
chine maintenance is not carried out correctly
and if service and/or repairs are not carried
out professionally. If you need further infor-
mation, please contact your nearest autho-
rised service dealer.
CLEAN AIR FILTER
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
1. Clean the cover and the area around it to
keep dirt from falling into the carburetor
chamber when the cover is removed.
2. Remove parts as illustrated.
NOTE: Do not clean filter in petrol or other
flammablesolvent to avoid creatinga fire haz-
ard or producing harmful evaporative emis-
sions.
WARNING: Disconnect the spark
plug before performing maintenance except
for carburetor adjustments.
CHECK FOR LOOSE
FASTENERS AND PARTS
S Spark Plug Boot
3. Wash the filter in soap and water.
4. Allow filter to dry.
5. Replace parts.
S Air Filter
S Housing Screws
S Handlebar Screws
S Combination Shield
Air Filter
Knob
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for re-
placement of damaged or worn parts.
S ON/STOP (I/0) Switch -- Ensure ON/STOP
(I/0) switch functions properly by moving
the switch to the STOP (0) position. Make
sure engine stops; then restart engine and
continue.
S Fuel Tank -- Discontinue use of unit if fuel
tank shows signs of damage or leaks.
S Combination Shield -- Discontinue use of
unit if shield is damaged.
Air Filter Cover
REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. Set
spark plug gap at 0,6 mm. Ignition timing is
fixed and nonadjustable.
INSPECT AND CLEAN UNIT AND
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and dis-
card.
LABELS
S After each use, inspect complete unit for
loose or damaged parts. Clean the unit and
labels using a damp cloth with a mild deter-
gent.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 19 mm
socket wrench.
S Wipe off unit with a clean dry cloth.
4. Reinstall the spark plug boot.
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SERVICE AND ADJUSTMENTS
6. Bend the line at the midpoint and insert
REPLACING THE LINE
the bend into the slot in the center rim of
the spool. Ensure line snaps into position
in the slot.
1. Press the tabs on the side of the trimmer
head and remove cover and spool.
7. With your finger between the lines, wrap
the lines evenly and firmly around the
spool in a clockwise direction.
Tab
Tab
C
Spool
8. Position the lines in the guide slots.
Guide slot
Guide slot
2. Remove any remaining line.
3. Clean dirt and debris from all parts. Re-
place spool if it is worn or damaged.
4. Replace with a pre-wound spool, or re-
place line using a 4,5 meters length of 2,4
mm diameter McCulloch brand line.
WARNING: Never use wire, rope,
string, etc., which can break off and becomea
dangerous missile.
5. When installing new line on an existing
spool, hold the spool as shown.
9. Place the spool in the cover as shown
below.
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CARBURETOR ADJUSTMENT
WARNING: Keep others away when
making idle speed adjustments. The trimmer
head will be spinning during most of this pro-
cedure. Wear your protective equipment and
observe all safety precautions. After making
adjustments, the trimmer head must not
move/spin at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may benecessary if you
notice any of the following conditions:
S Engine will not idle when the throttle is re-
leased.
10. Insert the ends of the lines through exit
holes in the sides of the cover.
S The trimmer head moves/spins at idle speed.
Make adjustments with the unit supported so
the cutting attachment is off the ground and
will not make contact with any object. Hold
the unit by hand while running and making ad-
justments. Keep all parts of your body away
from the cutting attachment and muffler.
Line exit hole
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without trimmer headmoving or spinning
(idle speed too fast) or engine stalling (idle
speed too slow).
S Turn idle speed screw clockwise to in-
crease enginespeed if enginestalls or dies.
S Turn idle speed screw counterclockwise to
decrease engine speed if trimmer head
moves or spins at idle speed.
ver
11. Reinstall the spool and cover onto the
trimmer head. Push until cover snaps into
place.
WARNING: Recheck the idle speed
after each adjustment. The trimmer head
must not move or spin at idle speed to avoid
serious injury to the operator or others.
speed screw
Air filter
cover
BLADE REPLACEMENT
If you require further assistanceor are unsure
about performing this procedure, contact an
authorized service dealer.
Refer to the ASSEMBLY section for blade re-
placement instructions and illustrations.
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STORAGE
ENGINE
WARNING: Perform the following
steps after each use:
S Remove spark plug and pour 1 teaspoon of
40:1, 2-cycle engine oil (air cooled) through
the spark plug opening. Slowly pull the
starter rope 8 to 10 times to distribute oil.
S Replace spark plug with new one of recom-
mended type and heat range.
S Allow engine to cool before storing or trans-
porting.
S Store unit and fuel in a well ventilated area
where fuel vapors cannot reach sparks or
open flames from water heaters, electric
motors or switches, furnaces, etc.
S Empty fuel tank before storing or transport-
ing the unit.
S Clean air filter.
S Check entire unit for loose screws, nuts,
and bolts. Replace any damaged, broken,
or worn parts.
S At the beginning of the next season, use
only fresh fuel having the proper petrol to oil
ratio.
S Store unit and fuel well out of the reach of
children.
S Store unit with all guards in place. Position
unit so that any sharp object cannot acci-
dentally cause injury.
OTHER
S Do not store petrol from one season to
another.
SEASONAL STORAGE
Prepare unit for storage at end of season or if
it will not be used for 30 days or more.
If your unit is to be stored for a period of time:
S Clean the entire unit before lengthy storage.
S Store in a clean dry area.
S Replace your petrol can if it starts to rust.
S Lightly oil external metal surfaces.
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TROUBLESHOOTING TABLE
WARNING: Always stop unit and disconnect spark plugbefore performingall of the
recommended remedies below except remedies that require operation of the unit.
TROUBLE
CAUSE
REMEDY
Engine will not
start.
1. ON/STOP (I/0) switch in
STOP position.
1. Move ON/STOP (I/0) switch to ON (I)
position.
2. Engine flooded.
2. See “Starting a Flooded Engine” in
Operation Section.
3. Fuel tank empty.
4. Spark plug not firing.
5. Fuel not reaching
carburetor.
3. Fill tank with correct fuel mixture.
4. Install new spark plug.
5. Check for dirty fuel filter; replace.
Check for kinked or split fuel line;
repair or replace.
6. Carburetor requires
adjustment.
6. Contact an authorized service dealer.
Engine will
not idle
properly.
1. Carburetor requires
adjustment.
2. Crankshaft seals worn.
3. Compression low.
1. See “Carburetor Adjustment” in
Service and Adjustments Section.
2. Contact an authorized service dealer.
3. Contact an authorized service dealer.
Engine will not
accelerate,
lacks power,
or dies under
a load.
1. Air filter dirty.
1. Clean or replace air filter.
2. Clean or replace plug
and regap.
2. Spark plug fouled.
3. Carburetor requires
adjustment.
4. Carbon build-up on
muffler outlet screen.
5. Compression low.
3. Contact an authorized service dealer.
4. Contact an authorized service dealer.
5. Contact an authorized service dealer.
Engine
1. Choke partially on.
1. Adjust choke.
smokes
2. Fuel mixture incorrect.
2. Empty fuel tank and refill with
correct fuel mixture.
excessively.
3. Air filter dirty.
4. Carburetor requires
adjustment.
3. Clean or replace air filter.
4. Contact an authorized service dealer.
Engine runs
hot.
1. Fuel mixture incorrect.
1. Empty fuel tank and refill with
correct fuel mixture.
2. Spark plug incorrect.
3. Carburetor requires
adjustment.
4. Carbon build-up on
muffler outlet screen.
2. Replace with correct spark plug.
3. Contact an authorized service dealer.
4. Contact an authorized service dealer.
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DECLARATION OF CONFORMITY
EC Declaration of Conformity (Only applies to Europe)
We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46--36--146500, as authorised
representative in the Community, declare that the brushcutter model McCulloch Cabrio
433B with serial numbers dating from 2009 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 17 May 2006 “relating to machinery” 2006/42/EC;
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. For information relating to noise emissions, see Technical data section.
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 performed voluntary type examination on behalf of Husqvarna AB. The
certificate(s) are numbered: SEC/09/2034.
0 9 -- 11 -- 0 1
Ronnie E. Goldman, Director of Engineering
Authorized representative for Husqvarna AB and
responsible for technical documentation
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TECHNICAL DATA SHEET
MODEL: Cabrio 433B
ENGINE
3
Cylinder displacement, cm
33
At maximum engine power, rpm
7000
10000
Maximum rotational frequency of the spindle
Engine speed at recommended maximum spindle
rotational frequency
7400
2900
Recommended speed idling, rpm
Maximum engine power, measured in
accordance with ISO 8893, kW
0,9
IGNITION SYSTEM
Spark plug
Champion RCJ--6Y
0,6
Electrode gap, mm
FUEL AND LUBRICATION SYSTEM
3
Fuel tank capacity, cm
480
6,8
WEIGHT
Weight without fuel, cutting attachment and guard, kg
NOISE EMISSIONS
(see Note 1)
Sound power level, measured dB(A)
112,3
117,0
Sound power level, guaranteed L dB(A)
WA
NOISE LEVELS
(see Note 2)
Equivalent sound pressure level at the operators’ ear,
measured according to EN/ISO 11806 and ISO 22868, dB(A)
Equipped with grass blade (original)
Equipped with trimmer head (original)
102,0
99,8
VIBRATION LEVELS
(see Note 3)
Equivalent vibration levels (a
) at handles, measured
hv,eq
2
according to EN ISO 11806 and ISO 22867, m/s
Equipped with grass blade (original), left/right
Equipped with trimmer head (original), left/right
6,7/5,1
4,0/3,6
Note 1: Noise emissions in the environment measured as sound power (L ) in conformity
WA
with EC directive 2000/14/EC. Reported sound power level for the machine has been
measured with the original cutting attachment that gives the highest level. The difference
between guaranteed and measured sound power is that the guaranteed sound power also
includes dispersion in the measurement result and the variations between different machines
of the same model according to Directive 2000/14/EC.
Note 2: Reported data for equivalent sound pressure level for the machine has a typical
statistical dispersion (standard deviation) of 1 dB(A).
Note 3: Reported data for equivalent vibration level has a typical statistical dispersion
2
(standard deviation) of 1 m/s .
Model Cabrio 433B (3/8 LH arbor shaft thread)
Centre hole in blades/cutters, ∅ 25,4 mm
Approved accessories Type
Cutting attachment /guard, part. no.
Grass blade/grass cutter Grass 255--4 1 inch
530 05 58 92 / 575 35 27 01
(∅ 250 4--teeth)
Trimmer head
TNG 7 (∅ 2,4 mm line)
537 41 92--02 / 575 35 27 01
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