Dolmar MS290.4U User guide

MS290.4U
MS290.4L
MS290.4LN
EN Petrol Brushcutter
Petrol String Trimmer
ORIGINAL INSTRUCTION
MANUAL 2
PL Kosa Spalinowa
Wykaszarka Spalinowa INSTRUKCJA ORYGINALNA 32
HU Benzines késes fűkasza
Benzines nejlonszálas fűkasza
EREDETI HASZNÁLATI
ÚTMUTATÓ 62
SK Benzínový krovinorez
Benzínový strunový vyžínač
ORIGINÁLNY NÁVOD NA
POUŽÍVANIE 92
CS Benzinový křovinořez
Benzinový strunový vyžínač PŮVODNÍ NÁVOD K POUŽÍVÁNÍ 122
UK Бензиновий кущоріз
Бензинова мотокоса ОРИГІНАЛЬНА ІНСТРУКЦІЯ З ЕКСПЛУАТАЦІЇ 152
RO
Maşină de tăiat arboret pe
benzină
Cositoare portabilă pe benzină
MANUALUL ORIGINAL DE
INSTRUCȚIUNI 185
DE Motorsense
Motor Rasentrimmer
ORIGINAL-
BETRIEBSANLEITUNG 215

2ENGLISH
ENGLISH (Original instructions)
TABLE OF CONTENTS
SPECIFICATIONS ....................................................... 2
SAFETY WARNINGS .................................................. 3
PARTS DESCRIPTION................................................ 7
ASSEMBLY.................................................................. 8
BEFORE STARTING THE ENGINE........................... 13
OPERATION.............................................................. 15
MAINTENANCE......................................................... 19
TROUBLESHOOTING............................................... 31
SPECIFICATIONS
Model: MS290.4U MS290.4L MS290.4LN
Handle type Bike handle Loop handle
Dimensions: length x width x height (without cutting tool) 1,789 mm x 661 mm
x 525 mm
1,789 mm x 393 mm
x 332 mm
1,789 mm x 252 mm
x 339 mm
Net weight (without fuel, cutting attachment and harness) 5.7 kg 5.2 kg
Volume (fuel tank) 0.6 L
(oil tank) 0.08 L
Engine type Air cooled, 4-stroke, single cylinder
Engine displacement 29.0 cm3
Maximum engine performance 0.95 kW at 8,000 min-1
Engine speed at recommended max. spindle speed 10,000 min-1
Maximum spindle speed (corresponding) 7,400 min-1
Idling speed 3,300 min-1
Clutch engagement speed 4,300 min-1
Carburetor Diaphragm type
Spark plug NGK CMR6H
Electrode gap 0.7 - 0.8 mm
Fuel Automobile gasoline (petrol)
Engine Oil API grade SF class or higher, SAE 10W-30 oil
(automobile 4-stroke engine oil)
Cutting diameter Metal blade 255 mm -
Nylon cutting head 450 mm
Gear ratio 1.36:1
• Duetoourcontinuingprogramofresearchanddevelopment,thespecicationshereinaresubjecttochange
without notice.
• Specicationsmaydifferfromcountrytocountry.
Noise
ThetypicalA-weightednoiseleveldeterminedaccordingtoISO22868:
Model Type Sound pressure level average Sound power level average
LPA eq (dB (A)) Uncertainty K
(dB (A))
LWA eq (dB (A)) Uncertainty K
(dB (A))
MS290.4U Nylon cutting head 94.9 1.4 108.2 1.6
Metal blade (2-tooth) 95.5 2.3 105.4 2.2
MS290.4L Nylon cutting head 94.9 1.4 108.2 1.6
Metal blade (2-tooth) 95.5 2.3 105.4 2.2
MS290.4LN Nylon cutting head 91.9 1.0 106.3 0.6
WARNING: Wear ear protection.

3ENGLISH
Vibration
Thevibrationtotalvalue(tri-axialvectorsum)determinedaccordingtoISO22867:
Model Type Left hand Right hand
ahv eq (m/s2)Uncertainty K
(m/s2)
ahv eq (m/s2)Uncertainty K
(m/s2)
MS290.4U Nylon cutting head 3.9 1.1 2.6 1.0
Metal blade 3.6 1.0 3.0 1.0
MS290.4L Nylon cutting head 4.3 1.2 3.9 1.8
Metal blade 4.4 0.9 4.5 1.6
MS290.4LN Nylon cutting head 4.6 1.1 3.8 1.9
NOTE:Thedeclaredvibrationemissionvaluehasbeenmeasuredinaccordancewiththestandardtestmethod
and may be used for comparing one tool with another.
NOTE:Thedeclaredvibrationemissionvaluemayalsobeusedinapreliminaryassessmentofexposure.
WARNING:Thevibrationemissionduringactualuseofthepowertoolcandifferfromthedeclaredemission
valuedependingonthewaysinwhichthetoolisused.
WARNING: Be sure to identify safety measures to protect the operator that are based on an estimation of
exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the times when
the tool is switched off and when it is running idle in addition to the trigger time).
Symbols
You will note the following symbols when reading the
instructions manual.
Read instruction manual and follow the all
warnings and safety precautions!
Take particular care and attention!
Forbidden!
Emergency stop
Fuel (Gasoline)
Oil
Flyingobjecthazard!
Protectiveglovesmustbeworn!
Wear sturdy boots with nonslip soles.
Steeltoed safety boots are recommended!
Wearprotectivehelmet,eyeandear
protection!
Kickback!
15m(50FT)
Keep bystanders at least 15 m (50 ft) away.
Top permissible tool speed
Neverusemetalblade.
EC Declaration of Conformity
For European countries only
The EC declaration of conformity is included as Annex A
to this instruction manual.
SAFETY WARNINGS
Brushcutter safety warnings
WARNING: Read all safety warnings,
instructions, illustrations and specications pro-
vided with this machine. Failure to follow all instruc-
tionslistedbelowmayresultinreand/orserious
injurytotheoperatorand/orbystanders.
General safety
1. First-time or inexperienced operators should
ask the dealer for training in the operation of
this machine. Never allow children, or people
unfamiliar with the instructions, to use the
machine.
2. It is recommended that you lend the machine
only to people who have proven to be expe-
rienced. Always hand over the instruction
manual.

4ENGLISH
3. Stay alert, watch what you are doing and use
common sense when operating the machine.
Do not use the machine while you are tired,
ill, or under the inuence of drugs, alcohol or
medication. A moment of inattention while oper-
ating the machine may result in serious personal
injury.
4. Follow all national and local regulation on the
use of outdoor power equipment.
Intended use of machine
This equipment is only intended for cutting grass,
weeds, bushes and undergrowth. Never use the
machine for any other purpose such as edging or
hedge cutting. Use for unintended purpose may result
inseriousinjury.
Personal protective equipment
1. Always wear heavy pants, sturdy boots,
gloves, and a long-sleeved shirt. Do not wear
loose clothing, jewelry, short pants, sandals,
or go barefoot. Secure hair so that it is above
shoulder level.
2. Always wear a helmet where there is a risk of
falling objects.
3. Always wear protective goggles to protect
your eyes from ying debris. The goggles
must comply with ANSI Z87.1 in the USA, EN
166 in Europe, or AS/NZS 1336 in Australia/
New Zealand. We recommend wearing a visor
to protect your face, too.
4. Always wear ear protection, such as ear muffs.
Exposure to noise can cause hearing loss.
5. Always wear sturdy shoes with a non-slip sole.
Thiskindofshoesprotectsyourfeetagainstinju-
ries and ensures good footing.
Preparation before use
1. Before use, always check that the machine is
safe for operation:
— Check for fuel leaks.
— Make sure all fasteners are in place and
secure.
— Replace damaged parts.
— Make sure the cutting tool is properly
installed and securely fastened.
— Make sure the cutting tool guard is prop-
erly attached in the position as described
in this manual.
— Check the throttle trigger, lock-off lever
and other control switches for smooth
action and proper function.
— Clean the handles for proper control of
the machine.
— Make sure the handles are installed as
described in this manual.
Failure to follow these instruction may cause a
seriousinjury.
2. Use a sharp blade. Discard blades that are
bent, warped, cracked, broken, chipped or
damaged in any way. A dull blade is more likely
to snag and cause kickback.
3. Always use all required parts for xing the
blade properly. Improperly attached parts can
causethebladetoyoffandseriouslyinjurethe
operatorand/orbystanders.
Refueling
1. Stop the engine before refueling. Keep away
from open ames and sparks. Never smoke
during refueling.Notdoingsomaycauseare
and/orexplosion.
2. Refuel outdoors. Refueling in a closed room can
causeanexplosionoffuelvapor.
3. Avoid contact with fuel or engine oil. Do not
inhale fuel vapor. If fuel or oil spills, wipe it off
of the machine and/or ground immediately. If
fuel spills on your clothing, change immedi-
ately to prevent your clothing from catching
re.
4. After refueling, carefully tighten the fuel tank
cap and check for fuel leaks. Move at least 3 m
(10 feet) away from the fueling source and site
before starting the engine.
5. Transport and store fuel in approved contain-
ers only. Keep children away from the stored
fuel.
Starting up the brushcutter/string
trimmer
1. Keep children, bystanders and pets at least 15
m (50 feet) away, when starting up or using the
machine. Additionally, bystanders should wear
eye protection, as there is still a risk of injury
from thrown objects. Bystanders' unexpected
actions or a blade kickback may cause serious
injurytotheoperatorand/orbystanders.
2. Start and operate the machine only outdoors
in a well-ventilated area.Operationinaconned
orpoorlyventilatedareacanresultindeathdueto
suffocation or carbon monoxide poisoning.
3. Before starting, make sure that the cutting
tool is not in contact with hard objects such as
branches, stones etc, as the cutting tool will
revolve when starting.
4. If the cutting tool rotates at idle, adjust the
idle speed so that it stops at idle. Unintentional
contactwiththemovingcuttingtoolmayresultina
seriousinjury.
5. Stop the engine immediately if you notice any
engine trouble.
Transportation
1. Stop the engine during transport. Unintentional
start-upmaycauseaninjury.
2. When transporting the machine, always attach
the cover to the cutting blade. Contact with bare
bladeswillresultinaninjury.
3. Ensure the safe position of the machine when
transporting it by car in order to avoid fuel
leaks.
4. Lift the entire machine from the ground when
carrying it. Dragging the machine can cause fuel
tankdamageandfuelleak,resultinginare.

5ENGLISH
Operation
1. Only use the machine in good light and visi-
bility.Useinthedarkorinareasofpoorvisibility
may cause unexpected accidents.
2.
During the winter season, beware of slippery or
wet areas, ice and snow so as to avoid slipping.
3. If you are approached, stop the engine. The
rotating cutting tool may hit the bystander and
resultinaseriousinjury.
4. Clear the working area before operation.
Remove all objects such as rocks, broken
glass, nails, wire, or string, which can be
thrown or become entangled in the cutting
attachment. Foreign particles may damage the
cutting tool and can cause a dangerous kickback.
5. To control the machine steadily, do the follow-
ing during operation:
— Hold the machine with both hands rmly
on your right side.
— Hang the machine on your shoulder(s)
using the shoulder harness.
— Ensure safe footing. Never work on a
ladder or in a tree.
— Avoid over-reach.
— Keep the cutting tool below waist level.
— Keep all parts of your body away from the
rotating cutting tool and hot surfaces.
Theseactionsreducetheriskofinjury.
6. If weeds or branches get caught between the
cutting tool and guard, always stop the engine
before clearing. Unintentional blade rotation may
causeaseriousinjury.
7.
Never drop or throw the machine, except an
emergency. If the machine drops or hits some-
thing, immediately check safety devices, and for
fuel leaks or other damages. Operating a malfunc-
tioningmachinemaycauseaninjuryand/orre.
8. Inspect the cutting tool frequently, or immedi-
ately after it hits a stone or other hard objects.
If the cutting tool breaks during operation, the
brokenpiecemayyoffandcauseaninjury.
9. Stop the engine when inspecting, cleaning or
replacing the cutting tool. The cutting tool may
rotateunexpectedlyandresultinaseriousinjury.
10. Maintain proper control until the cutting tool
stops completely, when stopping the engine or
releasing the throttle trigger. A coasting blade
cancauseaninjury.
11. Before starting the cutting operation, wait
until the cutting tool attains sufcient speed
for cutting. This reduces the risk of kickback and
entangling weeds.
12. Rest occasionally to prevent loss of control
caused by fatigue. We recommend that you take
a10-to20-minutebreakeveryhour.
13. Stop the engine and place it in safe location
when on a break or when leaving the equip-
ment.Doingsopreventsunexpectedaccidents.
14. Do not touch the engine and its mufer and do
not place them on top of combustible mate-
rials while the engine is running or just after
stopping it, as they are hot.Burnsand/orare
may result.
Cutting Tools
1. Use a suitable cutting tool for your work.
— Nylon cutting heads (string trimmer heads)
are suitable for trimming lawn grass.
— Metal blades are suitable for cutting weeds,
high grasses, bushes, shrubs, underwood,
thickets, and the like.
Always use the cutting tool guard properly
suited for the cutting tool used.
2. When using a nylon cutting head, use only
exible, nonmetallic line recommended in this
manual. Never use wire or wire rope. These can
breakoffandbecomeadangerousprojectile.
3. Never use metal multi-piece pivoting chains,
ail blades or blades not recommended in this
manual.Seriousinjuriesmayresult.
4. When handling metal blades, always wear
gloves and put the blade cover on the blade.
The blade can cut bare hands.
5. When using metal blades, avoid kickback.
Always prepare for an accidental kickback.
See the section "Kickback".
Kickback (blade thrust)
Kickback (blade thrust) may occur when the spin-
ning blade contacts an object that it can not imme-
diately cut. It can be violent enough to cause the
unit and/or operator to be propelled in any direc-
tion, and possibly lose control of the unit, resulting
in a serious injury. Kickback can occur without
warning if the blade snags, stalls or binds and is
more likely to occur in areas where it is difcult to
see the material being cut.
Kickback occurs particularly when applying the
blade segment between 12 and 2 o’clock to hard
objects, bushes and trees with a diameter of 3 cm
or larger.
To avoid kickback:
1. Apply the segment between 8 and 11 o’clock.
2. Swing the tool evenly in a half-circle from
right to left, like using a scythe. This allows the
proper segment of the blade to contact plants to
be cut.
3. Never apply the segment between 12 and 2
o’clock.

6ENGLISH
4. Never apply the segment between 11 and 12
o’clock and between 2 and 5 o’clock, unless
the operator is well trained and experienced
and does it at his/her own risk.
12
1
2
3
4
5
11
10
9
8
5. Never use cutting blades close to hard objects,
such as fences, walls, tree trunks and stones.
6. Never use cutting blades vertically, for such
operations as edging and trimming hedges.
7. Avoid using the tool in areas where it is dif-
cult to see the object being cut.
Vibration
Exposure to excessive vibration can injure the blood
vessels or nervous system of the operator and cause
the following symptoms in the ngers, hands or
wrists: “Falling asleep” (numbness), tingling, pain,
stabbing sensations, alteration of skin color or of the
skin. If any of these symptoms occur, see a physician.
To reduce the risk of “white nger disease”, keep
your hands warm during operation and maintain the
equipment and accessories properly.
Maintenance
1. Have your machine serviced by our authorized
service center using only identical replace-
ment parts. Use only identical spare parts
and accessories supplied by Dolmar/Makita.
Incorrect repair and poor maintenance can
shorten the life of the machine and increase the
risk of accidents.
2. Never alter or remove any components of the
machine.Doingsomaycauseareand/orseri-
ousinjury.
3. After use, clean the machine and check all
screws and nuts for tightness.
4. Check the condition of the cutting tool, cutting
tool guard and shoulder harness. The cutting
blade must be sharp. Never straighten or weld
damaged cutting tools.
Other instructions
1. Always store the machine in locked rooms and
with an emptied fuel tank.
2. Pay attention to the environment. Avoid unnec-
essary throttle operation to create less pollu-
tion and noise emission. Adjust the carburetor
correctly.
3. Do not operate the engine with a faulty exhaust
mufer.
First Aid
1. In case of an accident make sure that a rst-
aid box is available in the vicinity of the cutting
operation. Immediately replace any items
taken from the rst aid box.
2. When asking for help, provide the following
information:
— Place of accident
— What happened
— Number of injured persons
— Kind of injuries
— Your name

7ENGLISH
PARTS DESCRIPTION
MS290.4U, MS290.4L
1
3
2
9
4
10
16
12
3
6
64
5
5
8
7
8
7
9
11
13
15
17
18
19
21
20
22
12
14
1Sparkplugcover 2Aircleanercover 3Primer pump 4Stop button
5Lock-offlever 6Hanger 7Throttletriggeradjust-
ment dial
8Throttle trigger
9Handle 10 Knob 11 Barrier(countryspecic) 12 Hanger(countryspecic)
13 Protector(universal
type)
14 Protector (narrow type)
(countryspecic)
15 Protector extension 16 Chokelever
17 Fuel tank cap 18 Fuel tank 19 Starter handle 20 Mufer
21 Oil tank cap 22 Shoulder harness ----
NOTE:Thetypeofcuttingtoolandshoulderstrapvarydependingonthecountry.

8ENGLISH
MS290.4LN
1
3
2
11
10
12
13
14
16
15
17
5
6
9
4
8
7
1Sparkplugcover 2Aircleanercover 3Primer pump 4Stop button
5Lock-offlever 6Hanger 7Throttletriggeradjust-
ment dial
8Throttle trigger
9Handle 10 Protector (narrow) 11 Chokelever 12 Fuel tank cap
13 Fuel tank 14 Starter handle 15 Mufer 16 Oil tank cap
17 Shoulder harness (coun-
tryspecic)
------
NOTE:Thetypeofcuttingtoolvariesdependingonthecountry.
ASSEMBLY
CAUTION: Before doing any work on the
Petrol Brushcutter, always stop the engine and
pull the spark plug connector off the spark plug.
CAUTION: Start the Petrol Brushcutter only
after assembling it completely.
Installing the handle
For bike handle model only
Insert the shaft of the handle into the grip. Align the
screw hole in the grip with the one in the shaft. Tighten
the screw securely.
1
2
3
4
►1. Grip 2. Screw 3. Handle 4. Throttle cable

9ENGLISH
NOTICE: Note the direction of the grip. The
screw holes will not be aligned if the grip is not
inserted in the correct direction.
NOTICE: Do not twist the throttle cable or bend
it in a small radius. Make sure that the throttle
trigger moves freely after installing the grip.
Mounting the handle
For bike handle model
1. Place the mount spring on the base.
2. Place the handle between the handle clamp and
handle holder.
3. Temporarily attach the handle by tightening the
knob,andadjustthehandleposition.
4. Fully tighten the knob.
3
1
4
2
5
6
►1. Knob 2. Handle clamp 3. Handle 4. Handle holder
5. Mount spring 6. Engine side
For loop handle model
Attach the handle using the supplied clamps and bolts.
Make sure that the handle is secured at a position close
totheengine,abovethelimitlinemarker.
3
1 2
4
5
►1. Handle 2. Bolt 3. Clamp 4. Limit line marker
5. Engine side
Attachthebarrier(countryspecic)tothehandleusing
the screw on the barrier.
1
2
►1. Barrier 2. Screw
Adjusting the handle/hanger position
Adjustthehandleandhangerpositiontoobtaincom-
fortable handling of the tool.
For bike handle model
Loosen the bolt on the hanger. Slide the hanger to a
comfortable working position and then tighten the bolt.
1
2
►1. Hex socket head bolt 2. Hanger
For loop handle model
Loosenthehexsocketheadboltonthehandle.Move
the handle to a comfortable working position and then
tighten the bolt.
1 2
►1. Hex socket head bolt 2. Handle
Ifaseparatehangerisprovidedonyourtool(country
specic),adjustitbylooseningthehexsocketheadbolt
onthehanger.Movethehangertoacomfortablework-
ing position and then tighten the bolt.

10 ENGLISH
1
2
►1. Hex socket head bolt 2. Hanger
Correct combination of the cutting tool and the safety equipments
CAUTION: Always use the correct combination of cutting tool and safety equipments. A wrong com-
binationmaynotprotectyoufromthecuttingblades,yingdebris,andstones.Itcanalsoaffectthebalanceofthe
toolandresultinaninjury.
Cutting tool Protector Handle Shoulder harness
Metal blade
(with nut, cup, and clamp
washer)
Protector(universaltype) Bike handle
Loop handle with barrier
With shoulder strap
Nylon cutting head Protector(universaltype)with
protector extension
Protector (narrow type)
Bike handle
Loop handle with barrier
Loop handle
With or without shoulder strap

11 ENGLISH
Protector (cutting tool guard)
WARNING: Never use a metal blade or nylon
cutting head without the protector.
CAUTION: Periodically tighten the bolts
on the protector. Tighten the right and left bolts
evenly so that the gap between the clamp and the
protector is constant.Thevibrationduringuseand/
oruneventighteningoftheboltsmaycausethepro-
tector drop off from the tool.
Attach the protector to the clamp using bolts.
Protector (universal type)
1
2
►1. Clamp 2. Protector
Protector (narrow type)
2
3
1
►1. Clamp 2. Protector 3. Cutter
CAUTION: Be careful not to injure yourself
with the cutter mounted on the protector.
NOTE: The cutter on the protector maintains the
nylon cord at the best length for cutting.
For MS290.4U and MS290.4L
To install the protector extension, insert the protector
extension to the protector and then snap the clips on.
Makesurethatthetabsontheprotectorextensiont
into the slots on the protector.
1
3
2
4
2
5
6
►1.Protector(universaltype)2. Clip 3. Protector
extension 4. Cutter (inside) 5. Slot 6. Tab
Toremovetheprotectorextensionfromtheprotector,
unclasp the clips and pull the protector extension out.
CAUTION: Be sure to push the protector
extension until it is fully inserted. Otherwise the
protector extension may fall off and this could result in
apersonalinjury.
CAUTION: Be careful not to injure your-
self with the cutter mounted on the protector
extension.
NOTE: The cutter on the protector extension main-
tains the nylon cord at the best length for cutting.
Installing the cutting tool
CAUTION: Be sure to use genuine Dolmar/
Makita metal blades or nylon cutting heads.
NOTE: When installing the cutting tool, turn the tool
upside down for ease of access.
Installing the metal blade
For MS290.4U and MS290.4L
CAUTION: When handling the metal blade,
always wear gloves and put the blade cover on the blade.
CAUTION: The outside diameter of the metal
blade must be 255 mm (10″). Never use any blades
larger than 255 mm (10″) in outside diameter.
CAUTION: The metal blade must be well
polished, and free of cracks or breakage. If the
metal blade hits a stone during operation, stop
the engine and check the blade immediately.
CAUTION: Polish or replace the metal blade
every three hours of operation.
CAUTION: Always use the supplied
wrench(es) to remove or to install the blade.

12 ENGLISH
Compatible blades
Metal blade (2-tooth)
Metal blade (3-tooth)
Metal blade (4-tooth)
Metal blade (8-tooth)
1. Installthereceivewasherontotheshaft.
2. Insert the hex wrench through the hole in the gear
case to lock the shaft. Rotate the shaft until the hex
wrench is fully inserted.
3. Mountthemetalbladeontothereceivewasher.
4. Install the clamp washer and cup, and then secure
the metal blade by turning the nut counterclockwise.
Tighteningtorque:16-23N•m
5. Removethehexwrench.
1
7
2
3
4
5
6
►1. Nut 2. Cup 3. Clamp washer 4. Metal blade
5.Receivewasher6. Shaft 7. Hex wrench
1
2
►1. Box wrench 2. Hex wrench
Be sure that the arrows on the blade and protector are
pointing in the same direction.
Toremovethemetalblade,followtheinstallationproce-
duresinreverse.
NOTE: The resin part of the blade fastening nut
wearsoutovertime.Replacethenutifthereappears
to be any wear or deformation.
Installing the nylon cutting head
CAUTION: If the nylon cutting head hits
a stone during operation, stop the engine and
check the nylon cutting head immediately.
There are two types of nylon cutting head; the bump &
feed type and the manual feed type.
Bump and feed type
1. Installthereceivewasherontotheshaft.
2. Insert the hex wrench through the hole in the gear
case.
3. Screw the nylon cutting head onto the shaft by
turning it counterclockwise.

13 ENGLISH
4. Afterinstallingthenyloncuttinghead,removethe
hex wrench.
1
4
23
►1. Nylon cutting head 2.Receivewasher3. Shaft
4. Hex wrench
Manual feed type
1. Installthereceivewasherontotheshaft.
2. Insert the hex wrench through the hole in the gear
case.
3. Insert the nylon cutting head into the shaft and
tighten the nut.
4. Afterinstallingthenyloncuttinghead,removethe
hex wrench.
1
5
2
3
4
►1. Nut 2. Nylon cutting head 3.Receivewasher
4. Shaft 5. Hex wrench
Hex wrench storage
CAUTION: Be careful not to leave the hex
wrench inserted in the tool head. Doing so may
causeaninjuryand/ordamagetothetool.
When not in use, store the hex wrench as shown in the
guretokeepitfrombeinglost.
For bike handle model
1
2
►1. Knob 2. Hex wrench
For loop handle model
1
2
►1. Handle 2. Hex wrench
BEFORE STARTING THE
ENGINE
Basic information about engine oil
Recommended oil:
SAE10W-30oilofAPIClassication,ClassSFor
higher (4-stroke engine for automobile)
Oil volume:
Approx. 0.08 L

14 ENGLISH
How to read the oil gauge:
Placetheenginesothatitislevelwhencheckingtheoil
level.Theoillevelisappropriateifthesurfaceoftheoil
is between the upper and lower limit.
1 2
12
►1. Upper limit 2. Lower limit
Adding engine oil
CAUTION: Always cool the engine down
before adding engine oil.
CAUTION: Always keep the engine level
when adding engine oil. Otherwise you can add too
much engine oil, and this could result in an oil spill or
arewithwhitesmoke.
Relltheoilbeforetheoillevelpassesthelowerlimit.
Change the oil when the oil color darkens.
1. Placetheengineinalevelpositionanddetachthe
oil cap.
2.
Add the engine oil up to the upper limit using an oil bottle.
1
2
►1. Oil cap 2. Oil bottle
3. Close the oil cap.
CAUTION: Be sure to tighten the oil cap
securely.Insufcienttighteningmaycauseoilleaks.
NOTICE: If engine oil spills out, wipe up the
spilled oil before starting the engine.
Fuel supply
WARNING: When refuelling, stop the engine
and wait for the engine to cool down. Otherwise
ignition,are,orskinburnsmayresult.
WARNING: The engine must be refueled in
a location free of re to prevent ignition or a re.
Never bring the re (smoking, etc.) near the fuel
supply.
WARNING: Refuel on a at surface. Do not
refuel on an unstable surface. Refuel in good light
and visibility.
WARNING: Open the fuel tank cap slowly.
The fuel may spill out due to internal pressure.
WARNING: Take care not to spill the fuel.
Wipe up spilled fuel.
WARNING: Refuel the engine in a well-ven-
tilated place.
WARNING: Refuel in an open, empty
location.
WARNING: Handle the fuel with care.
CAUTION: Fuel adhering to the skin or enter-
ing an eye may cause allergies or irritation. If any
physical abnormalities are detected, consult the
medical specialist immediately.
NOTICE: DO NOT put oil in the fuel tank.
Fuel
WARNING: Keep the machine and tank in a
cool place out of direct sunlight.
WARNING: Never keep fuel in a car.
This engine is a 4-stroke engine. Be sure to use auto-
mobile gasoline (regular gasoline or premium gasoline).
NOTICE: Never use gasoline mixed with oil,
such as 2-stroke oil or motor oil. Doing so can
causeexcessivecarbonaccumulationormechanical
problems.
NOTE: Keep fuel in a special container in a
well-ventilated and shaded area. Use fuel within a
period of 4 weeks. Otherwise, fuel may deteriorate
in one day.
Refuelling method
CAUTION: If the tank cap is damaged or
awed, replace it.
CAUTION:Thetankcapwearsovertime.
Replace the tank cap every two to three years.
NOTICE: DO NOT put fuel in the oil ll port.

15 ENGLISH
1. Loosen the tank cap a little to release the tank
pressure.
2. Detach the tank cap, and refuel gently, while
discharging air by tilting the fuel tank so that the refuel
portisorientedupward.DONOTlluptothetop.
3. After refuelling, securely tighten the tank cap.
1
2
►1. Fuel tank 2. Fuel tank cap
OPERATION
WARNING: Be extremely careful to maintain
control of the machine at all times. Do not allow
the machine to be deected toward you or anyone
in the work vicinity. Failure to keep maintain of the
machinecouldresultinseriousinjurytobystanders
and/ortheoperator.
Starting the engine
WARNING: Never attempt to start the engine
where refueling is performed. Doing so may
cause ignition or a re. When starting the engine,
maintain a distance of at least 3 meters from
refueling site.
WARNING: Be sure that the cutting tool is
not in contact with the ground or any other object
before starting the engine.
WARNING: Be sure that there are no fuel
leaks before starting the engine.
WARNING: When pulling the starter handle,
kneel down and hold the tool with one hand to
keep a good balance.
When the engine is cold or after
refueling (cold start)
1. Placetheengineonaatsurface.
2. Continue to push the primer pump until fuel enters
the primer pump.
1
►1. Primer pump
3. Liftthechokelevertotheclosedposition.
1
►1.Chokelever
4. Pull the starter handle gently until it is hard to pull
(compression point). Then return the starter handle and
pull it strongly.
1
►1. Starter handle
NOTICE: Never pull the rope to its full
extension.
NOTICE: Return the starter handle to the hous-
ing manually.Ifyoujustreleasethestarterhandle,it
may hit your body or may not rewind appropriately.

16 ENGLISH
5. Whentheenginestarts,returnthechokeleverto
the open position. Continue warm-up operation for 2 to
3 minutes.
NOTE: If the engine res and stops, return the
choke lever to the open position and pull the
starter handle several times to start the engine
again.
NOTE: If the operator keeps pulling the starter
handle several times with the choke lever left in
the “CLOSE” position, the engine may be difcult
to start because of ooding of the fuel. In case of
ooding,removethesparkplugandpullthehandle
severaltimesrapidlytodischargeanyexcessfuel.
Dry the spark plug electrode.
When the engine is warm (warm
start)
CAUTION: Be careful not to burn your hand.
1. Placetheengineonaatsurface.
2. Pushtheprimerpumpseveraltimes.
3. Besurethatthechokeleverisintheopen
position.
4. Pullthestarterhandlermly.
NOTE:Ifitisdifculttostarttheengine,openthe
throttlebyabout1/3.Payattentiontothecutterblade
which may rotate.
Stopping the engine
CAUTION: Be sure that the cutting tool
comes to complete stop. The cutting tool may coast
after the engine stops.
Release the throttle to idle the engine. Then press the
stop button.
For bike handle model
1
►1. Stop button
For loop handle model
1
►1. Stop button
Attaching/detaching the shoulder
harness
Optional accessory
WARNING: Be extremely careful to maintain
control of the machine when detaching the shoul-
der harness.
CAUTION: Before operation, adjust the
shoulder harness according to the user's size to
prevent fatigue.
CAUTION: Be careful not to trap clothing in
the buckle.
CAUTION: Be sure that the machine is
held securely by the shoulder harness before
operation.
There are two types of shoulder harness; backpack type
and strap type.
Backpack type
1. Put on the shoulder harness and fasten the
buckle.

17 ENGLISH
2. Connect the hook of the shoulder harness to the
hanger on the machine.
1 2
►1. Hook 2. Hanger
3. Adjusttheshoulderharnesstoacomfortable
working position.
12
►1. Shoulder harness without waist belt 2. Shoulder
harness with waist belt
Incaseofanemergency,releasethebucklebysqueez-
ing the sides and take off the shoulder harness.
Strap type
1. Wear the shoulder harness so that the hook is on
your right side.
2. Connect the hook of the shoulder harness to the
hanger on the machine.
12
►1. Hook 2. Hanger
3. Adjusttheshoulderharnesstoacomfortable
working position.
The shoulder harness features a means of quick
release.Squeezethesidesofthebuckletoreleasethe
machine from the shoulder harness.

18 ENGLISH
1
►1. Buckle
Correct handling of the machine
WARNING: Exhaust gas from the engine is
toxic. Do not operate the engine in a poorly-ven-
tilated location, such as in a tunnel, building, etc.
Operatingtheengineinapoorly-ventilatedlocation
may cause poisoning by exhaust gas.
WARNING: If you detect any strange
sounds, odor, or vibrations after starting, stop the
engine immediately and inspect it. If the engine
is operated without attending to such problems, an
accident may occur.
WARNING: To avoid accidents, maintain a
distance of more than 15 m (50 ft) between oper-
ators when two or more operators are working
in one area. Be sure that there is someone there
to observe the distance between operators. If a
person or an animal enters the work area, immedi-
ately stop operation.
CAUTION: Do not run the engine with no
load or run at a higher speed than required . Doing
so may cause an engine malfunction.
Always hold the machine on your right side and slide it
from right to left when cutting grass. Correct positioning
and handling allow optimum control and reduce the risk
ofinjurycausedbykickback.
For bike handle model
For loop handle model
Nylon cutting head operation
Optional accessory
The nylon cutting head is a dual string trimmer head
providedwithabump&feedmechanism.
To feed out the nylon cord, tap the cutting head against
the ground while it is rotating.
1
►1.Mosteffectivecuttingarea
NOTE: The bump feed will not operate properly if the
head is not rotating.
NOTE: If a nylon cord does not feed out, replace with
the new nylon cord.
Adjusting the throttle trigger
The maximum engine speed can be controlled by
regulatingthethrottletriggermovement.Turnthe
adjustmentdialindirectionAasinthegureforhigher
maximum engine speed, and in direction B for lower
maximum engine speed.

19 ENGLISH
For bike handle model
1
►1.Adjustmentdial
For loop handle model
1
►1.Adjustmentdial
Adjusting the idle speed
CAUTION: The cutting tool may rotate
during adjustment. Wear your protective equip-
ment and observe all safety instructions.
CAUTION: The carburetor is factory
adjusted. Never adjust anything other than idle
speed.Forotheradjustments,consultourauthorized
servicecenter.
CAUTION: Adjust the idle speed so that
the cutting tool does not rotate. The idle speed is
too high if the cutting tool rotates. If the cutting tool
continuestoruninidle,consultourauthorizedservice
center.
Appropriate low-speed rotation:3,300 min-1 (rpm).
If the engine stops or runs unsteadily at idle, turn the
adjustmentscrewtotherightusingaPhillipsscrew-
driver.Ifthethecuttingtoolcontinuestorotateevenat
idle,turntheadjustmentscrewtotheleft.
1
►1.Adjustmentscrew
MAINTENANCE
WARNING: FLAMMABLE ITEMS STRICTLY
PROHIBITED.
WARNING: Any maintenance or adjust-
ments that are not included and described in this
manual are only to be performed by our autho-
rized service center.
CAUTION: Before inspection and mainte-
nance, stop the engine and allow it to cool down.
Remove the spark plug and plug cap. Not doing so
may cause the operator to suffer burns or a serious
injuryduetoanaccidentalstart-up.
CAUTION: After inspection and main-
tenance, be sure that all parts are correctly
assembled.
CAUTION: Always wear protective gloves.
CAUTION: The metal blades must be
resharpened only by an authorized facility. Manual
resharpening may result in imbalances in the cutting
tool,causingvibrationsanddamagetothetool.
CAUTION: Never use gasoline, benzine,
thinner, alcohol or the like for cleaning the tool.
Discoloration, deformation or cracks may result.
NOTICE: To ensure a long service life and to
avoid any damage to the equipment, perform
servicing operations at regular intervals.
Daily checks and maintenance
Before starting operation
• Checkthemachineforloosescrewsormissing
parts. Pay particular attention to the tightness of
the cutting tool.
• Alwayscheckifthereisanyclogginginthecooling
airpassageandthecylinderns.Cleanthecool-
ingairpassageandthecylindernsifnecessary.
• Checkthefunctioningofthebuttonsandlevers.

20 ENGLISH
After use
• Cleantheexteriorofthemachineandinspectfor
any damage.
• Cleantheairlter.Whenworkingunderextremely
dustyconditions,cleanthelterseveraltimesa
day.
• Checkthecuttingtoolforanydamage.Alsobe
surethatitisrmlymounted.
• Checkthatthereissufcientdifferencebetween
idle and engagement speed. Be sure that the
cutting tool is at a standstill while the engine is in
idle.
Replacing the engine oil
CAUTION: The engine main unit and engine
oil still remain hot after the engine is stopped.
When replacing the engine oil, make sure that the
engine main unit and engine oil are sufciently
cooled down. Otherwise, there may is a risk of
scalding.
CAUTION: If the oil lled above the limit,
it may become dirty or may catch re with white
smoke. Allow sufcient time after stopping
engine for the engine oil to return to the oil tank to
ensure accurate reading of the oil amount.
NOTICE: Never discard replaced engine oil in
garbage, on ground or in sewage. Disposal of oil is
regulatedbylaw.Alwaysfollowtherelevantlawsand
regulations. If there is anything you are unclear about,
contactourauthorizedservicecenter.
NOTICE: Oil will deteriorate even when it is
kept unused. Perform an inspection and replace-
mentatregularintervals(replacewithnewoilevery
6 months).
NOTICE: Deteriorated engine oil will shorten
the life of the engine parts badly. Be sure to check
the period and quantity of replacement.
Interval of replacement: Initially, after 20 operating
hours,andsubsequentlyevery50operatinghours
Recommended oil: SAE10W-30 oil of API
ClassicationSFClassorhigher(4-strokeengineoilfor
automobiles)
To replace the oil, perform the following procedures.
1. Conrmthatthefueltankcapistightened
securely.
2. Place a large container, such as a pan, under the
drain hole.
3. Removethedrainboltandthenremovetheoil
cap.
Be careful not to lose the gasket on the drain bolt.
Donotgetanyoftheremovedcomponentsdirty.
Thoroughly wipe off any oil on the drain bolt and gasket
using a cloth.
4. Drain the oil through from drain hole.
1
2
3
►1. Drain bolt 2. Gasket 3. Oil cap
Alternativemethod:Youcandraintheoilwithoutremov-
ingthedrainbolt.Removetheoilcapandtilttheengine
to drain the oil out.
5. Once all the oil is drained, combine the gasket and
the drain bolt and then tighten the drain bolt securely.
6. Placetheengineinalevelposition.Graduallyll
with new oil up to the upper limit mark.
1
►1. Upper limit mark
7. Tighten the oil cap securely.
CAUTION: Be sure that the drain bolt and oil
cap are securely tightened.Aloosetmaycause
an oil leak.