Partner B 320 B Instruction Manual

545154276 Rev. 3 4/15/09 BRW

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.

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 INFORMA TI O N:

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.

MANUAL DE INSTRUCCIONES

INFORMACIÓN IMPORTANTE:

Lea atentamente las instrucciones y
asegúrese de entenderlas antes de utilizar esta aparato. Conserve las instruc­ciones para la referencia en el futuro.

GB

FR

DE

ES

2

IDENTIFICATION (WHAT IS WHAT?)

15

21

20

8

18

2

9

7

10

1

3

16

23

6

13

17

19

5

11

12

22

9

14

4

1. Fuel tank

2. Handlebar

3. ON/STOP switch

4. Throttle cable clip

5. Shoulder harness clamp

6. Shoulder harness

7. Trimmer head

8. Line limiter blade

9. Shield

10. Shaft

11. Blade

12. Throttle trigger

13. Throttle lock--out

14. Start throttle button

15. Starter handle

16. Fuel cap

17. Primer bulb

18. Start lever

19. Muffler

20. Wrench

21. Hex wrench

22. Transport guard

23. Instruction manual

3

IDENTIFICATION OF SYMBOLS

A.

B.

C.

D.

E.

F.

G.

H.

I.

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 canthrust violently away frommaterial it does not cut. Bladethrust

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 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 al­ways be followed to reduce the risk of fire and
serious injury. Read and follow all instructions.

DANGER:This power tool can be dan-

gerous! This unit can cause serious injury in­cluding amputation or blindness to the operator
and others. The warnings and safety instruc­tions in this manual must be followed to provide
reasonable safety and efficiency in using the
unit.The operator is responsiblefor followingthe
warnings and instructions in this manual and on
the unit. Read the entire instruction manual be­fore assembling and using the unit! Restrict the
use of this unit to persons who read, under­stand, and follow the warnings and instructions
in this manual and on the unit. Never allow chil­dren to operate this unit.

SAFETYINFORMATION
ON THE UNIT

INSTRUCTION
MANUAL

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.Yo uandotherscanbe
blinded or injured. Wear safety glasses and
leg protection.

4

WARNING: Hazard zone for thrown

objects.Blade/Trimmerlinecanthrowobjects
violently. Others can be blinded or injured.
Keep people and animals 15 meters away.

Hazard Zone

WARNING: Do not use trimmer head

as a fastening device for the blade.

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.

OPERATOR SAFETY

S Dress properly. Always wear safety

glasses or similar eye protection when op­erating, 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.

S Always wear foot protection. Do not go

barefoot or wear sandals. Stay clear of
blade/spinning line.

S Securehairaboveshoulder 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 al­cohol, 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 Mufflers fitted with catalytic converters get

very hot during use and remain so for some
time after stopping. This also applies at idle
speed. Contact can result in burns to theskin.
Remember the risk of fire!

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).

UNIT / MAINTENANCE SAFETY

WARNING: Stop unit and disconnect

the spark plug before performing mainte­nance (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 cut­ting line at the proper length.

S Use only 2,4 mm diameter Partner brand

replacement line. Never use wire, rope,
string, etc.

S Install required shield properly before using

theunit.Usethemetalshieldforallmetal
blade use. Use the plastic shield for all line
trimmer use.

S Use only specified blade or trimmer head;

make sure it is properly installed and se­curely fastened.

S Never start engine with clutch shroud re-

moved.Theclutchcanfly off and cause se­rious injury.

S Besurebladeortrimmer head stops turning

when engine idles.

S Makecarburetor adjustments with the low-

er end supported to prevent blade or trim­mer line from contacting any object. Hold
unit by hand; do not use the shoulder har­ness for support.

S Keepothers away whenmakingcarbure-

tor adjustments .

5

S Use only recommended Partner accessories

and replacement parts.

S Have all maintenance and service not ex-

plained in this manual performed by your au­thorized service dealer.

FUEL SAFETY

S Mix and pour fuel outdoors.
S Keep away from sparks or flames.
S Use a container approved for fuel.
S Donotsmoke orallow smokingnear fuel or

the unit.

S Avoidspilling fuel or oil. Wipeup 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 Alwaysstore petrol in a containerapproved

for flammable liquids.

CUTTING SAFETY

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,andhelpers at least50 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.

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 in daylight or good artificial light.
S Use only for jobs explained in this manual.

TRANSPORTING AND STORAGE

S Allowthe 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 Storeunit and fuel in an areawhere fuel va-

pors cannot reach sparks or open flames
from water heaters, electric motors or
switches, furnaces, etc.

S Storeunit so line limiter cannotaccidentally

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.

SPECIAL NOTICE: Exposure to vibrations

through prolonged use of petrol powered hand
tools could cause blood vessel or nerve dam­age in the fingers, hands, and joints of people
prone to circulation disorders or abnormal swell­ings. 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 thecondition
of this tool.

ASSEMBLY

CARTON CONTENTS

Check carton contents against the followinglist:

S Brushcutter
S Blade shield
S Blade shield screws (4)
S Blade
S Cupped washer
S Large nut for installing blade
S Trimmer head
S Plastic shield
S Nut(screwedontoplasticshield)
S Handle bar
S Handle bar bracket cover
S Handle bar bracket cover screws (2)
S Upper shoulder harness clamp
S Lower shoulder harness clamp
S Shoulder harness clamp screws (2)
S Shoulder harness
S Hex wrench
S Wrench
S Transport guard
S Throttlecableclip

WARNING: Always stop unit and dis-

connect sparkplugbefore performing any as­sembly procedures.

WARNING: If received assembled,

repeatallsteps to ensure your unitis properly
assembled and all fasteners are secure.
Examine parts for damage. Do not use dam­aged parts.
It is normal for the fuel filter to rattle in the
empty fuel tank.
Finding fuel or oil residueon muffler is normal
due to carburetor adjustments and testing
done by the manufacturer.

TOOLS REQUIRED

S Hex wrench (provided)
S Adjustable wrench
S Phillips screwdriver

6

ATTACHING THE HANDLEBAR

DANGER: Toavoid serious injury, the

barrier portion ofthe 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 throttlehandleontothe right side
of the handlebar (see illustration).

3. Align the screw hole inthe throttle handle
with the hole in the handlebar.

4. Refit thescrewinthe hole in therear ofthe
throttle handle.

5. Screw the screw through the handle and
handlebar. Tighten the screw.

6. Fit the mounting components as shown.

7. The handlebar mounting must be fitted
between the arrows on the shaft.

8. Tighten the screws with a hex wrench.

ASSEMBLYOF SHOULDER
HARNESS

WARNING: When using a brushcut-

ter,it must always be hooked securely to the
shoulder harness. Otherwise, you will be un­able to safely control the brushcutter. This
can result in injury to yourself or others.
Proper shoulder harness and handlebar adjust­ments must be made with the engine complete­ly stopped before using unit. A well--adjusted
shoulder harness and machine makes work
much easier.

ATTACHING SHO UL DER HARNESS
CLAMP

1. Place the upper shoulder harness clamp
over the shaft.

2. Position the lower shoulder harness
clamp under the shaft and align the upper
and lower clamp screw holes. Clamp
mustbefittle 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 tight­ening screws with a hex wrench.

SHOULDER HARNESS
ADJUSTMENT

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.

1. Put ontheharness. Adjustthe harnessfor
the best working position.

2. Tensiontheside straps so that the weight
is evenly distributed across both shoul­ders.

NOTE: It may be necessary to relocate the

shoulder harness clampontheshaft forprop­er balancing of unit.

76 cm

SHOULDER HARNESS

ADJUSTMENT

FOR BALANCE

10 -- 30 cm

above

ground

15 cm
below
waist

7

76 cm

CONFIGURING YOUR UNIT

Youcan configure your unit using a cuttinghead
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 sec­tion for the desired configuration and follow the
instructions.

ASSEMBLYINFORMATION -­TRIMMER HEAD

TRIMMER
HEAD

NOTE:Remove the blade andmetal shieldbe-

fore attaching the plastic shield and trimmer
hea d. T o remove blade, align hole in the dust
cup with the hole in the side of the gearboxby
rotating the blade. Inserta smallscrewdriver
intoalignedholes. Thiswillkeeptheshaftfrom
turning while loosening the blade nut. Remove
blade nut by turning clockwise. Remove the
screwdriver. Remove both washers and blade.
T oremove metal shield, loosen and remove the
four mounting screws. See ATTACHING THE
METAL SHIELD and INSTALLATION OF THE
METALBLADEfor illustrations. Besure tostore
all parts and instructions for future use.

ATTACHING THE PLASTIC SHIELD
ANDTRIMMERHEAD

WARNING: Theshield must be prop-

erly installed. The shield provides partial
protection to the operator andothers fromthe
risk of thrown objects, and is equipped with a
line limiter blade whichcuts excessline to the
proper length. The line limiter blade (on un­derside of shield) is sharp and can cut you.

1. Remove nut from shield.

2. Insert bracket into slot on shield.

3. Pivot shield until boltpasses through hole
in bracket.

4. Reinstall nut and tighten securely with
wrench (provided).

NOTE: If your unit has a plastic cover over

thethreads on the threaded shaft,removethe
covering to exposethethreads. Beforeinstal­lingthetrimmerhead,make sure the dustcup
and retaining washer are positioned on the
gearbox as shown below.

Nut

Retaining Washer

Dust Cup

Bracket

Slot

Shield

Gearbox

NOTE: Make sure all parts are properly

installed as shown in the illustration before
installing the trimmer head.

5. Align hole in thedust cup with thehole in the
side of the gearbox by rotating the dust cup.

6. Insert a small screwdriver into aligned
holes. This will keep the shaft from turning
while tightening trimmer head.

Screwdriver

7. While holding the screwdriver in position,
thread trimmer head onto the shaft in the
direction shown on the decal (counter­clockwise). Tighten until secure.

NOTE: The retaining washer must be posi-

tioned with the raised section facing toward the
gearbox.

ASSEMBLY INFORMATION -- WEED
BLADE

WEED
BLADE

8

NOTE: Remove the trimmer head and plastic

shield before attaching the metal shield and
installing the weed blade.T oremove the trimmer
head, align hole in the dust cup with the hole in
the side of the gearbox by rotatingthe dust cup.
Insert a small screwdriver into aligned holes.
This will keep the shaft from turning while loos­ening the trimmer head. Remove the trimmer
head by turning clockwise. Remove the screw­driver. Toremove the plastic shield, loosen and
remove nut. Pivot shield to release bracket from
slot. See INSTALLATION OF THE CUTTING
HEAD and ATTACHING THE PLASTIC
SHIELD for illustrations. Be sure to store all
parts and instructions for future use. Never use
the trimmer head with the metal blade installed.

ATTACHING T HE METAL S H IELD

WARNING: The metal shield must be

properly installed on the tool anytime the tool is
used with a blade. Failure to install the shield in
the positionshown can result in serious injury to
the operator. The length of the shield must be
aligned with the length of the shaft.

1. Place the metal shield under the gearbox,
and align the screw holes.

Shield

Gearbox

2. Insert and thread the 4 mounting screws
through the holes of the gearbox and the
metalshield. Tighten evenly andsecurely
with the hex wrench provided.

INSTALLA TION OF THE METAL
BLADE

WARNING: Wear protective gloves

when handling or performing maintenance on
the blade to avoid injury. The blade is sharpand
can cut you even when it is not moving.

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 Partner and installed
as shown below. Failureto use proper parts can
cause the blade to fly off and seriously hurt you
or others.

NOTE: The dust cup and retaining washer are

located on the gearbox shaftand not in theparts
bag. All other fasteners mentioned in the follow­ing assembly steps are in the parts bag.

1. Remove the retaining washer from the
threaded shaft of the gearbox. Leave the
dustcupontheshaft.

2. Install the blade and the retaining washer
over the threaded shaft.

3. Make sure the raised part of the retaining
washer is facing the gearbox and theraised
area fits into the hole in the center of the
blade.

4. Slide the blade and retaining washer onto
the shaft of the gearbox.

5. Place the cupped washer onto the shaft.
Make surethe cuppedside of the washer
is toward the blade.

6. Install the blade nut by threading onto the
shaft counterclockwise.

Shield

Blade

Retaining
Washer

Dust Cup

Cupped
Washer

Nut

Threaded Shaft

Gearbox

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.

7. Align hole in dust cup with hole in side of
gearbox by rotating the blade.

8. Insert a small screwdriver into aligned
holes. This will keep the shaft from turning
while tightening the blade nut.

Screwdriver

9. Tighten blade nut firmly with a wrench while
holding screwdriver in position.

10. Remove the screwdriver.

11. Turn blade by hand. If the blade binds
against theshield, or appears to be uneven,
the blade is not centered, and you must re­install.

NOTE: To remove blade, insert screwdriver

into aligned holes. Unthread the nut andremove
parts. Be sure to store parts and instructions for
future use.

9

OPERATION

WARNING: Be sure to read the fuel

information in the safety rules before you be­gin. If you do not understand the safety rules,
donot attempt to fuelyour unit.Contact an au­thorized service dealer.

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 engineoil.
Werecommend Partner brand oil mixed at ara­tio 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 automotive oil or boat oil.
These oils will cause engine damage. When
mixing fuel, follow instructions printed on oilcon­tainer. Once oil is added to petrol, shake con­tainer momentarily to assure that the fuel isthor­oughly mixed. Always read and follow the
safety rules relating to fuel before fueling your
unit.

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 en­gine and let it run until the fuellines andcarbure­tor are empty. Use fresh fuel next season. Nev­er 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

switch to the STOP position.

ON/STOP
Switch

HOW TO START YOUR UNIT

WARNING: Avoid any contact with the

muffler. A hot muffler can cause serious burns.

ST ARTI NG A COLD ENGINE (or a
warm engine after running out of fuel)

Starting position

Muffler

Starter Handle

Start Lever

Primer Bulb

NOTE: The throttle lock--out is designed to

prevent unintentional use of the throttle trig­ger. The lock--out must be pressed with the
palmofyour handas you gripthethrottlehan­dle 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 switch to the ON 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 en­gine starts and runs.

6. Allow unit to run for 10--15 seconds, then
fully squeeze the throttle trigger to disen­gage the starting system.

STARTING A WARM ENGINE

1. Move ON/STOP switch to the ON position.

2. Squeeze and hold the throttle trigger.
Keep throttle trigger fully squeezed until
engine runs smoothly.

3. Pull starter rope sharply while squeezing
throttle trigger until engine runs.

NOTE: Normally, the warm starting proce-

dure can be used within 5 -- 10 minutes after
theunit is turned STOP.Iftheunitsits for more
than 10 minutes 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

Flooded engines can be started by placing
the ON/STOP switch in the ON position.
Move the start lever to the RUN position and
fully squeeze throttle trigger. Pull the starter
handle repeatedly while squeezing throttle
triggeruntil enginestarts andruns. This could

10

require pulling the starter handle many times,
depending on how badly the unit is flooded.
If the unit still doesn’t start, refer to the TROU­BLESHOOTING TABLE.

OPERATING POSITION

Boots

Heavy,
Long Pants

Eye Protection

ALWAYS WEAR:

Cut from your left to your right.

Hearing
Protection

Safety Helmet

When operating unit, clip shoulder harness
ontoclamp,stand as shownandcheck forthe
following:

S Weareye 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.

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.

OPERATING INSTRUCTIONS FOR
USE WITH TRIMMER HEAD

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.
Beforetrimming,bring enginetoa speedsuffi­cient to cut material to be trimmed.
Do not run the engine at a higher speed than
necessary. Th e 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.
To stop engine:

S Release the throttle trigger.
S Mo ve the ON/STOP swit ch to the STOP

position.

TRIMMER LINE ADVANCE

Advance line by tappingthebottomofthecut­ting head lightly on the groundwhile engine is
running at full speed. The metal line limiter
blade attached to the guard will cut the line to
the proper length.

WARNING: Use only 2,4 mm diameter

line. Other sizes of line will not advanceproperly
and can cause serious injury. Do not use other
materials such as wire, string, rope, etc. Wire
can break off during cutting and become a dan­gerous missile that can cause serious injury.

CUTTING METHODS

WARNING: Use minimum speed and

do not crowd the line when cutting around
hard objects (rock, gravel, fence posts, etc.),
whichcandamagethetrimmer 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.

Right

Wrong

Tip o

f

line does

the cutting.

L

ine crowded into

work area.

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.

S For trimming or scalping, use less than full

throttle to increaseline life and decreasehead
wear, especially:

S During light duty cutting.
S Near objects around which the line can

wrap such as small posts, trees or fence
wire.

S For mowing or sweeping, use fullthrottle for a

good clean job.
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.

Trimming

80mm above
ground

SCALPING -- The scalping technique re­moves unwanted vegetation down to the
ground. Hold the bottom of the trimmer head
about8cmabove the ground and at anangle.

11

Allow the tip of the line to strike the ground
around trees, posts, monuments, etc. This
technique increases line wear.

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.

Mowing

SWEEPING-- Thefanning action of therotat­ingline canbeusedtoblowawayloosedebris
from an area. Keep the line parallel to and
above the area surface and swing the tool
from side to side.

OPERATING INSTRUCTIONS FOR
USE WITH WEED BLADE

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. Itis 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 WHAT CAUSES BLADE THRUST -- Blade

Thrust can occur when the spinning blade

contacts an object that it does not cut. This
contact causes thebladeto stopfor aninstant
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 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.

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

maximumcutting powerand is less likely to

bind or stall.
S “Feed” the blade deliberately and not too

rapidly.The blade can thrust away if it is fed

too rapidly.
S Cutonly fromyour left to your right. Cuttingon

right side of the shield will throw debris away

from the operator.
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.
S Donot raisetheengine aboveyourwaist as

the blade can come dangerously close to

your body.
S Do not swing unit with such force that you

are in danger of losing your balance.
Bring the engine to cutting speed before enter­ing the material to be cut. If the blade does not
turnwhen you squeeze thethrottle 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 cut­ting. The blade should not turn while the en­gineisrunning at idle. If the bladeturns at idle,
donot useyour unit. Refer to theCARBURE­TOR ADJUSTMENT section or contact your
authorized service dealer.
S Maintain good firm footing while using the

unit. Do this by planting feet firmly in a

comfortable apart position.

12

S Cut while swinging the upper part of your

body from left to right.

S As you move forward to the next area to cut,

be sure to maintain your balance and footing.

Cut using the 2
o’clock to 4 o’clock
position of the
blade

2 o’clock

4 o’clock

RECOMMENDED CUTTING POSITION

WARNING: The operator or others

mustnottrytoclearaway cut material with the
engine running or the blade turning to avoid
serious injury. Stop engine and blade before
removing materials wrapped around blade or
shaft.

MAINTENANCE

The life span of the machine can bereduced
and the risk of accidents can increase if ma­chinemaintenance is not carriedoutcorrectly
and if service and/or repairs are not carried
out professionally. If you need further infor­mation, please contact your nearest autho­rised service dealer.

WARNING: Disconnect the spark

plug before performing maintenance except
for carburetor adjustments.

CHECK FOR LOOSE
FASTENERS AND PARTS

S Spark Plug Boot
S Air Filter
S Housing Screws
S Handlebar Screws
S Debris Shield

CHECK FOR DAMAGED OR
WORN PARTS

Contact an authorized service dealer for re­placement of damaged or worn parts.
S ON/S TOP Switch -- EnsureON/STOPswitch

functions properly by moving the switch tothe
STOP 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 Debris Shield -- Discontinue use of unit if

debris shield is damaged.

INSPECT AND CLEAN UNIT AND
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 deter­gent.

S Wipe off unit with a clean dry cloth.

CLEAN AIR FILTER

A dirty air filter decreases engine perform­ance 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

flammablesolventtoavoidcreatingafirehaz­ard or producing harmful evaporative emis­sions.

3. Wash the filter in soap and water.

4. Allow filter to dry.

5. Replace parts.

Air Filter

Air Filter
Cover

Button

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.

1. Twist, then pull off spark plug boot.

2. Removespark plug from cylinder anddis-

card.

3. Replace with Champion RCJ-6Y spark

plug and tighten securely with a 19 mm
socket wrench.

4. Reinstall the spark plug boot.

13

SERVICE AND ADJUSTMENTS

REPLACING THE LINE

1. Press the tabs on the side of the trimmer
head and remove cover and spool.

Tab

Cover

Tap Button

2. Remove any remaining line.

3. Clean dirt and debris from all parts. Re­place spool if it is worn or damaged.

4. Replace with a pre-wound spool, or re­place line using a 4,5 meters lengthof 2,4
mm diameter Partner brand line.

5. When installing new line on an existing
spool, hold the spool as shown in the il­lustration below.

6. Bend the line at the midpoint and insert
the bend into the slot in the center rim of
the spool. Ensure line snaps into position
in the slot.

Slot

Spool

7. With your finger between the lines, wrap
the lines evenly and firmly around the
spool in a clockwise direction.

8. Position the lines in the guide slots.

Guide

Slot

Guide Slot

9. Insert the ends of the lines through exit
holes in the sides of the cover.

10. Place the spool in the cover.

Spool

Cover

11. Make sure the lines are not caught be­tween the rim of the spool and the wall of
the cover.

12. Reinstall the spool and cover onto the
trimmerhead.Push untilcover snaps into
place.

BLADE REPLACEMENT

Refer to the ASSEMBLYsection for blade re­placement instructions and illustrations.

CARBURETOR ADJUSTMENT

WARNING: Keep others away when

making idle speed adjustments. The trimmer
head will be spinning during most of this pro­cedure. 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 ifyou
notice any of the following conditions:

S Engine will not idle when the throttle is re-

leased.
S Thetrimmer head moves/spins at idle speed.
Make adjustments with the unit supportedso
the cutting attachment is off the ground and
will not make contact with any object. Hold
theunitby hand while runningandmakingad­justments. Keep all parts of your body away
from the cutting attachment and muffler.

Idle Speed Adjustment

Allowengineto idle. Adjust speeduntilengine
runs without trimmer head moving or spinning
(idle speed too fast) or engine stalling (idle
speed too slow).

S Turn idle speed screw clockwise to in-

crease enginespeedifenginestallsordies.
S Turnidle speed screw counterclockwise to

decrease engine speed if trimmer head

moves or spins at idle speed.

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.

14

Idle Speed

Screw

Air Filter
Cover

Ifyou require further assistanceor areunsure
about performing this procedure, contact an
authorized service dealer.

STORAGE

WARNING: Perform the following

steps after each use:
S Allowengine to coolbeforestoring 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 Emptyfuel tank before storing or transport-

ing the unit.

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 acci­dentally cause injury.

SEASONAL STORAGE

Prepare unit for storageat 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 oftime:

S Clean the entire unit before lengthy storage.
S Store in a clean dry area.
S Lightly oil external metal surfaces.

ENGINE

S Removespark plugand pour 1 teaspoonof

40:1,2-cycleengine oil(air cooled)through

the spark plug opening. Slowly pull the

starter rope 8 to 10 times to distribute oil.
S Replacespark plug with new one of recom-

mended type and heat range.

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

onlyfresh fuel havingtheproperpetrol to oil

ratio.

OTHER

S Do not store petrol from one season to

another.
S Replace your petrol can if it starts to rust.

15

TROUBLE CAUSE REMEDY

Engine will not
start.

1. ON/STOP switch in STOP
position.

2. Engine flooded.

3. Fuel tank empty.

4. Spark plug not firing.

5. Fuel not reaching
carburetor.

6. Carburetor requires
adjustment.

1.MoveON/STOPswitchtoON
position.

2. See “Starting a Flooded Engine” in

Operation Section.

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. 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.

1. Air filter dirty.

2. Spark plug fouled.

3. Carburetor requires
adjustment.

4. Carbon build-up on
muffler outlet screen.

5. Compression low.

Engine will not
accelerate,
lacks power,
or dies under
a load.

1. Clean or replace air filter.

2. Clean or replace plug
and regap.

3. Contact an authorized service dealer.

4. Contact an authorized service dealer.

5. Contact an authorized service dealer.

Engine
smokes
excessively.

1. Choke partially on.

2. Fuel mixture incorrect.

3. Air filter dirty.

4. Carburetor requires
adjustment.

1. Adjust choke.

2. Empty fuel tank and refill with
correct fuel mixture.

3. Clean or replace air filter.

4. Contact an authorized service dealer.

Engine runs
hot.

1. Fuel mixture incorrect.

2. Spark plug incorrect.

3. Carburetor requires
adjustment.

4. Carbon build-up on
muffler outlet screen.

1. Empty fuel tank and refill with
correct fuel mixture.

2. Replace with correct spark plug.

3. Contact an authorized service dealer.

4. Contact an authorized service dealer.

WARNING: Alwaysstopunitand disconnectspark plugbefore performingall of the

recommended remedies below except remedies that require operation of the unit.

TROUBLESHOOTING TABLE

16

DECLARATION OF CONFORMITY

EC Declaration of Conformity (Only applies to Europe)
We, Husqvarna AB, SE--561 82 Huskvarna, Sweden, Tel: [phone], as authorised

representative in the Community, declare that the brushcutter model Partner B 320 B from
serial numbers 2009--031N00001 and onwards (the year is clearly stated on the rating plate,
followed by the serial number), comply with the requirements of the COUNCIL’S
DIRECTIVES:

of 22 June 1998 “relating to machinery” 98/37/EC, annex IIA;
of 15 December 2004 “relating to electromagnetic compatibility” 2004/108/EC, and applicable

supplements; and
of 8 May 2000 “relating to the noise emissions in the environment” in accordance with Annex

Vof2000/14/EC. The measured sound power is 112,6 dB(A), the guaranteed sound power is
117,0 dB(A). The cutting width is 43 cm.

The following standards have been applied: EN12100--1:2003, EN 12100--2:2003, EN ISO

11806:1997 and CISPR 12:2005.
SMP, The Swedish Machinery Testing Institute, Fyrisborgsgatan 3 S--754 50 Uppsala,

Sweden, has carried out voluntary type approval. The certificate(s) are numbered:
SEC/08/1231.

09--1--31

Ronnie E. Goldman, Director of Engineering
Handheld Consumer Products

17

TECHNICAL DATA SHEET

MODEL: B 320 B Blade Trimmer

ENGINE

Displacement, cm

3

32 32
Maximum engine power, measured in
accordance with ISO 8893, kW 0,7 0,7
Catalytic converter muffler Yes Yes

ENGINE ROTATIONAL SPEEDS

At maximum engine power, rpm 7000 7000
Maximum rotational frequency of the spindle 10000 10000
Engine speed at recommended maximum
spindle rotational frequency 7400 7400
Recommended speed idling, rpm 3000 3000

FUEL A N D LUBRICATION SYSTEM

Fuel tank volume capacity, cm

3

325 325
Fuel consumption at maximum engine power,
measured in accordance with ISO 8893, g/h 399 399
Specified fuel consumption at max. engine power,
measured in accordance with ISO 8893, g/kWh 435 435

WEIGHT

Without cutting attachment or shield, empty tank, kg 5,9 5,9

CUTTING ATTACHMENT

Weed blade, part number #530055892 Opt.
Cutting head assembly, part number Opt. #537419202

NOISE LEVELS (Octave Band Analysis 100--10000hz 1/3 Octave)

SOUND PRESSURE LEVELS measured in accordance with ISO 22868
Idling,dB(A) 80,7 80,7
Racing, dB(A) 100,5 102,7
SOUND POWER LEVELS in accordance with ISO 22868
Sound power level, measured dB(A) 112,6 112,6
Sound power level, guaranteed L

WA

dB(A) 117,0 117,0

VIBRATION LEVELS measured in accordance with ISO 22867
LEFT HANDLE
Idling, m/s

2

4,6 4,3
Racing, m/s

2

14,9 10,9
RIGHT HANDLE

Idling, m/s

2

5,1 4,6
Racing, m/s

2

13,4 4,4