Echo SHR-170SI User manual

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OPERATOR'S MANUAL
MANUEL D'UTILISATION
BEDIENUNGSANLEITUNG
MANUALE PER L'OPERATORE
ENGLISH
FRANÇAIS
DEUTSCH
ITALIANO
SHR-170SI
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
AVERTISSEMENT
LIRE ATTENTIVEMENT LES INSTRUCTIONS ET SUIVRE LES RÈGLES DE
SECURITÉ. LE NON-RESPECT DES RÈGLES DE SÉCURITÉ ENTRAÎNE UN
RISQUE DE BLESSURE GRAVE.
WARNUNG
LESEN SIE DIE BEDIENUNGSANLEITUNG SORGFÄLTIG DURCH, UND
BEFOLGEN SIE DIE SICHERHEITSREGELN. ANDERNFALLS BESTEHT DAS
RISIKO SCHWERER VERLETZUNGEN.
AVVERTENZA
LEGGERE E SEGUIRE ATTENTAMENTE LE ISTRUZIONI PER LAVORARE IN
CONDIZIONI DI MASSIMA SICUREZZA. LA MANCATA OSSERVANZA DELLE
ISTRUZIONI POTREBBE PROVOCARE LESIONI GRAVI.

2

1Top cover
ENGLISH
(Original instructions)
OPERATOR'S MANUAL
PORTABLE POWER SPRAYER
SHR-170SI
WARNING
READ THE INSTRUCTIONS CAREFULLY AND FOLLOW THE
RULES FOR SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.

2
Contents
For safe use of your product...............................................................................................3
Description..........................................................................................................................7
Before you start ..................................................................................................................8
Assembly.......................................................................................................................8
Preparing the fuel ..........................................................................................................8
Chemicals......................................................................................................................9
Filling chemical tank ....................................................................................................10
Engine operation...............................................................................................................11
Starting the engine ......................................................................................................11
Stopping the engine.....................................................................................................12
Operating power sprayer ..................................................................................................13
Spraying ......................................................................................................................13
When spraying is finished............................................................................................15
Maintenance and care ......................................................................................................16
Servicing guideline.......................................................................................................16
Maintenance and care.................................................................................................16
Troubleshooting table..................................................................................................19
Long-term storage(30 days or more)...........................................................................20
Specifications....................................................................................................................21
Declaration of conformity..................................................................................................22

3
For safe use of your product
For safe use of your product
Important information
WARNING
Please ensure that you read the operator's manual before using your product.
About your operator's manual
This manual contains necessary information about the assembly, operation, and maintenance of your product.
Please read it carefully and absorb its contents.
Always keep your manual in a place where it is readily accessible.
If you have lost your manual or it is damaged and no longer readable, please purchase a new one from your dealer.
The units used in this manual are SI units (International System of Units). Figures in parentheses are reference val-
ues, and there may be a slight conversion error in some cases.
Failure to do so could lead to an accident or serious injury.
Intended use of this product
This product is lightweight, high-performance, petrol engined knapsack units designed for spraying liquid chemical.
Do not use this unit for any purpose other than aforementioned.
The content of this manual may be changed without notice for the purpose of upgrades to the product. Some of the
illustrations used may differ from the product itself in order to make the explanations clearer.
Please consult your dealer if anything is unclear or of concern.
Failure to do so could lead to an accident or serious injury.
Do not modify the product
You must not modify the product.
To do so could lead to an accident or serious injury. Any malfunction resulting from a modification to the product will not be
covered by the manufacturer's warranty.
Do not use the product unless it has been checked and maintained
You must not use the product unless it has been checked and maintained. Always ensure that the product is checked
and maintained on a regular basis.
Failure to do so could lead to an accident or serious injury.
Loaning or assigning your product
When loaning your product to another party, ensure that the person borrowing the product receives the operator's
manual along with it.
If you assign your product to another party, please enclose the operator's manual with the product when handing it
over.
Failure to do so could lead to an accident or serious injury.
Users of the product
The product should not be used by:
people who are tired
people who have taken alcohol
people who are on medication
people who are pregnant
people who are in poor physical condition
people who have not read the operator's manual
children
Avoid direct contact or ingestion of chemicals you may use. Consult the label the chemicals, you may use for addi-
tional warning and precautions as well as emergency treatment. Stop operating the unit immediately if you feel sick
or excessive fatigue during operation. See a doctor if this condition persists.
Keep in mind that theoperator or user is responsible for accidentsor hazards occurring to other people or their prop-
erty.
Failure to observe these instructions could lead to an accident.

4
For safe use of your product
Vibration and cold
It is believed that a condition called Raynaud's Phenomenon which affects the fingers of certain individuals may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning,
followed by loss of colour and numbness in the fingers. The following precautions are strongly recommended be-
cause the minimum exposure which might trigger the ailment is unknown.
Keep your body warm, especially the head and neck, feet and ankles, and hands and wrists.
Maintain good blood circulation by performing vigorous arm exercises during frequent work breaks, and also by
not smoking.
Limit the number of hours of operation. Try to fill each day with jobs where operating the power sprayer or other
hand-held power equipment is not required.
If you experience discomfort redness and swelling of the fingers, followed by whitening and loss of feeling, con-
sult your physician before exposing yourself further to cold and vibration.
Failure to observe these instructions could result in damage to your health.
Repetitive stress injuries
It is believed that over-using the muscles and tendons of the fingers, hands, arms and shoulders may cause sore-
ness, swelling, numbness, weakness and extreme pain to the areasjust mentioned. Certain repetitivehand activities
may put you at a high risk for developing a repetitive stress injury (RSI). To reduce the risk of RSI, do the following:
Avoid using your wrist in a bent, extended or twisted position.
Take periodic breaks to minimize repetition and rest your hands. Reduce the speed and force in which you do the
repetitive movement.
Do exercises to strengthen hand and arm muscles.
See a doctor if you feel tingling, numbness or pain in your fingers, hands, wrists or arms. The sooner RSI is diag-
nosed, the more likely permanent nerve and muscle damage can be prevented.
Failure to observe these instructions could result in damage to your health.
Proper training
Do not permit operation without proper training and protective equipment.
Be thoroughly familiar with the controls and proper use of unit.
Know how to stop the unit and shut off the engine.
Never allow anyone to use the unit without proper instruction.
Failure to observe these instructions could result in damage to your health.
Wear proper clothing.
Do not wear ties, jewellery, or loose, dangling clothing which could be caught in the
unit.
Do not wear open toed footwear, or go bare-foot or barelegged.
Secure hair so it is above shoulder length.
Failure to observe these precautions could result in damage to your sight or hearing, or lead
to a serious injury.
Wear protective gear
Always wear the following protective gear when working with the unit.
Head protection (cap): Protects the head
Ear muffs or ear plugs: Protect the hearing
Safety goggles: Protect the eyes
Officially approved toxic mist respirator: Protects the breathing
Non-slip, heavy rubber work gloves: Protect the hands from chemicals
Chemical resisting work clothes: Protect the body
Non-skid sole shoes (with toecaps) : Protect the feet
Failure to observe these precautions could result in damage to your sight or hearing, or lead to a serious injury.
Environment of use and operation
Do not use the product:
a windy day or rainy day to avoid chemical drift.
on steep slopes or in places which give no secure foothold and are thus slippery.
at night or in dark places with poor visibility.
A serious injury could result if you fall or slip, or fail to operate the product correctly.
Heavy protective clothing can increase operator fatigue which may lead to heat stroke. Delay heavy work until the
temperature drops.
Failure to observe these instructions could result in damage to your health.
WARNING

5
For safe use of your product
Warning notices
Other indicators
Symbols
Being prepared in case of an injury
In the unlikely event of an accident or injury, please ensure that you are
prepared.
First aid kit
Towels and wipes (to stop any bleeding)
Whistle or mobile phone (for calling outside help)
If you are unable to perform first aid or call for outside help, the injury could
worsen.
Put safety first in the case of fire or smoke
If fire comesfrom the engine or smoke appears from any area other than the exhaust vent, first distance
yourself from the product to ensure your physical safety.
Use a shovel to throw sand or other such material on the fire to prevent it from spreading, or put it out
with a fire extinguisher.
A panicked reaction could result in the fire and other damage becoming more extensive.
WARNING
DANGER WARNING CAUTION
This symbol accompanied by the
word "DANGER" calls attentions to
an act ora condition which willlead to
serious personal injury or death of op-
erators and bystanders.
This symbol accompanied by the
word "WARNING" calls attentions to
anactoraconditionwhich canlead to
serious personal injury or death of op-
erators and bystanders.
"CAUTION" indicates a potentially
hazardous situation which, if not
avoided, may result in minor or mod-
erate injury.
Circle and slash sym-
bol means whatever is
shown is prohibited.
NOTE IMPORTANT
This enclosed message provides tips
for use, care and maintenance of the
product.
Framed text featuring the word "IM-
PORTANT" contains important infor-
mation about the use, checking,
maintenance and storage of the prod-
uct described in this manual.
Symbol form/shape Symbol description/applica-
tion Symbol form/shape Symbol description/applica-
tion
Carefully read the operator's
manual Petrol and oil mixture
Wear eyes, ears and head
protection Choke Control "Cold Start"
Position (Choke Closed)
Wear foot protection and
gloves Choke Control "Run" Position
(Choke Open)
Emergency stop Beware of high-temperature
areas

6
For safe use of your product
Safety decal(s)
The safety decal shown below has been attached to the products described in this manual. Ensure that you understand what
the decal means before using your product.
If the decal becomes unreadable due to wear and tear or damage, or peels off and is lost, please purchase a replacementdecal
from your dealer and attach it in the location shown in the illustrations below. Ensure that the decal is readable at all times.
Do notuse the product in plac-
es with poor ventilation Guaranteed sound power lev-
el
Beware of fire Engine start
Beware of electric shocks
Symbol form/shape Symbol description/applica-
tion Symbol form/shape Symbol description/applica-
tion
1. Safety decal (Part number 890617-13210)
2. Safety decal (Part number X505-002310)

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Description
Description
Feature of this model: " i-start"
" i-start" generates enough revolving power to rotate crankshaft up to a speed to ignite the engine and bring almost no kickback.
" i-start" makes engine start far more easier than you ever expect. As long as the engine of this unit is warm, it can be started with
it on operator's back.
1. Operator's manual
2. Socket wrench
3. Spray hose
4. Liquid valve - perform the operating and closing oper-
ations for spraying.
5. Chemical liquid tank
6. Fuel tank cap - For closing the fuel tank.
7. Fuel tank - Contains fuel and fuel filter.
8. Pump drain
9. Adjustable nozzle - controls discharge volume of
chemical.
10. Starter handle
11. Air cleaner cover - Covers air filter.
12. Throttle dial- Activated by the operator's finger for con-
trolling the engine speed.
13. Ignition switch
14. Card case

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Before you start
Before you start
Assembly
1. Install spray hose (A), grip (B), liquid valve (C), nozzle pipe
(D) and nozzle (E) to the nipple (F).
2. Adjust straps (G) so that pads rest comfortably on the oper-
ator's shoulders..
Preparing the fuel
WARNING
Read the operator's manual carefully to ensure that you assemble the product correctly.
Using a product that has been incorrectly assembled could lead to an accident or serious injury.
DANGER
Do not fuel up while the engine is hot or in operation.
Do not smoke or hold a flame near when refuelling.
If you do so, the fuel could ignite and cause fire, leading to burns.

9
Before you start
Fuel Recommended mixture ratio; 50 : 1 (2 %) for ISO-L-EGD
Standard (ISO/CD 13738), JASO FC,FD grade and ECHO
Premium 50 : 1 oil.
Do not mix directly in engine fuel tank.
Fuel supply Do not add so much fuel that it reaches the mouth of the fuel
tank (A). Keep the fuel within the prescribed level (up to the
shoulder level (B) of the fuel tank).
Tighten the fuel tank cap securely after refuelling.
Chemicals
WARNING
Do not fill fuel tanks indoors. Always fill fuel tanks outdoors over bare ground. Do not refuel the product on the load-
ing platform of a truck, or in other such places.
Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
Otherwise, fuel may get spewed.
Mop up any fuel that overflows or spills out due to overfilling.
Fuel spills can cause fire and burns when ignited.
After refuelling, always check that there are no leaks or discharges of fuel from the fuel pipe, fuel system grommets,
or around the fuel tank cap. If you do find fuel leaks or discharges, stop using the product immediately and contact
your dealer to have it repaired.
Any fuel leaks could cause fire.
Keep the refuelling tank in a shaded area away from fire.
Use an approved fuel container.
IMPORTANT
Fuel is a mixture of regular grade petrol and an air-cooled 2-stroke engine oil of reputable brand name. Minimum 89 Octane
unleaded petrol is recommended. Do not use fuel containing methyl alcohol or more than 10 % of ethyl alcohol.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days.
WARNING
Avoid direct contact and ingestion of chemicals. Some chemicals may be strongly harmful to human and animals.
Misuse of the chemicals can result in serious poisoning or death.
Sulfur is a very inflammable material. When spraying chemicals containing sulfur, carefully read explanation on ap-
plication attached to the chemicals and treat them with care.
NOTE
Do not dilute chemicals directly in the chemical tank.
Follow all precautions and instructions in the label of chemicals when handling.
Never allow untrained persons or children to handle chemicals and the unit.
Stop engine and put the unit down when filling chemicals.
Be sure to close valve before filling chemicals.
Do not overfill chemicals and wipe spillage away immediately.
Secure chemical tank cap firmly to avoid leakage of chemicals during the operation.

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Before you start
Filling chemical tank 1. Close liquid valve.
2. Fill the tank with liquid chemical through the strainer (A). Do
not fillwithout strainer. (Dust inthe tankmay cause clogging
of the liquid line or pump)
3. Stir up after filling to avoid chemical deposits at bottom of
tank.
4. Secure the chemical tank cap.
5. On a piece of paper (50 mm × 90 mm), write the name of the
chemical to be used.
6. Put the paper in the card case (B) to show the chemical the
tank contains.
NOTE
The tank is calibrated by each liter up to 15 liters.
Strainer
Mark : Y2
Part number : E220-000020
Mesh size : 40

11
Engine operation
Engine operation
Starting the engine
Starting a cold engine (Connect the spark plug cap if the product has been in storage for
a long period of time.)
1. Placing the product on level ground.
2. Be sure that valve is closed.
3. Move the ignition switch (A) to the Start position (B).
WARNING
Be particularly careful to observe the following precautions when starting the engine:
Move at least 3m from the place where you refueled.
Place the product in a flat, well ventilated place.
Check that there are no fuel leaks.
Check that there are no chemical leaks.
Check that none of the nuts and bolts are loose.
Leave plenty of space around the product and do not allow people or animals near it.
Start the engine with the throttle dial at START position.
Hold the product firmly to the ground when starting the engine.
There can be sometimes a time lag until engine starts after pulling starter grip. Be careful.
Failure to observe the precautions could cause an accident or injury, or even lead to a fatality.
When starter grip cannot be pulled lightly, the trouble is diagnosed as failure of engine
inside. Consult your dealer.
If disassembled inadvertently, it can cause injury.
Check that there are no abnormal vibrations or sounds once the engine starts. Do not use the product if there are
abnormal vibrations or sounds. Contact your dealer to have it repaired.
Accidents involving parts that fall or shatter off can cause wounds or serious injury.
The exhaust fumes from the engine contain toxic gases. Do not operate the product indoors or in other
ill ventilated places.
The exhaust fumes could cause poisoning.
Do not touch silencer, spark plug, and other high temperature components while the product is running
or for some time after it stops.
You could burn yourself if you touch a high temperature component.
Do not touch spark plug, spark plug wire, and other high voltage components while the product is run-
ning.
You could receive an electric shock if you touch a high voltage component while the product is running.
NOTE
Never start and operate engine before filling chemical tank to avoid damage to pump.
Pull out the starter grip gently at first, and then more rapidly. Do not pull the starter rope out to more than 2/3 of its length.
Do not let go of the starter grip as it returns.
I: High speed J: Idling

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Engine operation
4. Move the choke lever (C) to the "Cold Start" (D) position.
5. Push thepurge bulb(E) until fuel isvisible in clear fuel return
line.
6. Keep throttle dial (F) at START position (G:in the middle of
scale).
7. Hold the product firmly as shown in the illustration, pull the
starter grip until first firing sound.
8. Move the choke leverto the "Run" (H) position and continue
pulling on the starter grip to start the engine.
9. Leave the engine to warm up at idle speed for a while.
Starting a warm engine 1. Move the ignition switch (A) to the Start position (B).
2. Check that the choke lever is in the "Run" position.
3. Move throttle dial to START position (G).
4. If fuel tank is not empty, pull starter grip one to three times
and engine should fire. Do not use choke.
5. If fuel tank is empty, after refilling, push the purge bulb (until
fuel is visible in clear fuel return line) and the pull the starter
grip. Do not use choke.
Stopping the engine 1. Move the throttle dial (A) to the idle speed position and set
the engine to idling (i.e. low speed).
2. Move the ignition switch (A) to the Stop position.
3. In the event of an emergency, stop the engine immediately
using the ignition switch.
4. If the engine fails to stop, move the choke lever to the "Cold
Start" position. The engine will stall and come to a halt (an
emergency stop).
∗Ifthe enginefailstostopwhentheignitionswitchisused,have
the ignition switch checkedand repaired by yourdealer before
you use the product again.
5. Alwaysdisconnectthe sparkplug wirefromthe sparkplugto
ensure the engine cannot be started before you work on the
unit or leave it unattended.
NOTE
If engine does not start after 4 pulls, use cold starting proce-
dures.
NOTE
When misting liquid is over, stop the engine. Do not keep
engine running, chemical tank has been emptied.
IMPORTANT
Stopping engine without returning to idling may cause fail-
ure. Except in case of emergency never fail to stop engine
after shifting to idling.

13
Operating power sprayer
Operating power sprayer
Spraying 1. Check all connections to avoid chemical leak. (Nozzle, Noz-
zle pipe, hose etc.)
2. Afterengineiswarmedup, turnthrottledial tothehighspeed
position (Upper position) and open liquid valve.
3. Close chemical liquid valve when not in use.
Standard nozzle Adjustable nozzle (Standard type) is provided with this power
sprayer.
Standard nozzle discharge volume and pressure are as fol-
lows.
Mist (A): 1.0 L/min; 1.0 MPa (10 kgf/cm²)
Spray (B): 2.0 L/min; 1.0 MPa (10 kgf/cm²)
Mark : Y1, Y1B
WARNING
Before starting the job, check wind direction. Avoid blowing in the direction of open doors and windows, cars, pets,
children or anything that could be harmed by chemical.
This unit is designed for upright use only, do not lay down or lean excessively to avoid leakage of chemicals when
operating and transporting.
This unit will change your equilibrium. Extra precautions should be taken to maintain your footing and balance.
Check the shoulder harnesses are not tangled with any control levers when you put the unit on your back.
Do not point the nozzle in the direction of people or animals.
Keep a firm grip on the unit at all times.
Transport of the product
When transporting in the situations described below, turn off the engine and position the silencer away from your-
self.
Moving to the place where you are working.
Moving to another area while you are working.
Leaving the place where you have been working.
Failure to observe these precautions could cause burns or serious injury.
When transporting the product by car, empty the fuel tank, and secure the product firmly in place to prevent it from
moving around.
Travelling by car with fuel in the fuel tank could lead to a fire.
IMPORTANT
Spraying must be done leewardly. Choose morning or evening when it is not so windy, and the ground temperature reverses,
so as to minimize dispersion Iosses and enhance chemical adhesion effect and for less hazardous operation.
Before operating the unit, check and follow Iocal regulations concerning sound level and hours of operation.
Avoid using units when people are likely to be disturbed, such as late at night or early in the morning.
Operate the unit at the lowest possible throttle setting that gets the job done.
Make sure the silencer works well. Also check the air intakes and the air filter to make sure the unit is working properly.
Use only one piece of equipment at a time.
NOTE
Since this unit is equipped with a centrifugal clutch, sprin-
kling not possible when the engine is running at lowspeeds
(idling).
NOTE
You can use a nozzle other than the standard one if it dis-
charges liquid less than 7.0 L at a nozzle pressure of 1.0
Mpa (10 kgf/cm²) as required.
Long hose (approx. 100 m) is available as required.
In this case, use standard nozzles indicated above or less
discharge volume nozzle.

14
Operating power sprayer
Variety of nozzle
Convenient to use and reliable, the go anywhere this power sprayer is highly versatile with a large variety of optional nozzles
which adapts it to a wide range of applications. Most importantly, what use to take hours takes only minutes with the power
sprayer, making it an unequaled value for the homeowner and professional alike.
∗Optional nozzles are available at extra cost. For some country, a optional is supplied as standard part.
Nozzle Part number Discharge volume
1.0 MPa (10 kgf/cm²) Spraying distance
Adjustable nozzle
(Standard type) E025-000560 Mist 1.0 L /min 1.5 m
Spray: 2.0 L /min 5 m
Adjustable jet nozzle
(Long distance type) E025-000260 Mist: 2.4 L /min 3 m
Spray: 5 L /min 5 m
2-head nozzle (Line
type) 224202-10611 4.2 L /min -
4-head nozzle (Ring
type) 224101-10610 1.5 L /min -
7-head nozzle (Line
type) 224104-10611 2 L /min -

15
Operating power sprayer
When spraying is finished Chemical tank should be cleaned after each use.
Fill chemical tank with clear water and run engine.
Spray through nozzle for 2 to 3 minutes for cleaning.
Drain water from theunit through misting nozzle. In order to re-
move the pump drain plug (A), first unfix one of its upper hold-
ing parts.
Wipe off the liquid chemical on the machine after use.

16
Maintenance and care
Maintenance and care
Servicing guideline
Maintenance and care
check leakage of spray system 1. Close the liquid valve.
2. Put approximately 5 liters of water in the chemical tank.
3. Secure the chemical tank cap.
4. Check the connection between the spray hose, grip, liquid
valve, nozzle pipe, and nozzle to the nipple.
5. Start and warm up the engine.
6. Raise the engine speed and confirm if no water leakage is
occurring.
7. If there is leakage, consult your dealer.
WARNING
Observe the following precautions when checking and maintaining your product after use:
Turn the engine off and do not attempt to check or maintain the product until the engine has cooled.
You could burn yourself.
Remove the spark plug cap before performing checks and maintenance.
An accident could occur if the product starts unexpectedly.
IMPORTANT
Checking and maintenance requires specialist knowledge. If you are unable to check and maintain the product or deal with a
fault yourself, consult your dealer. Do not attempt to dismantle the product.
Area Maintenance Page Before use Monthly Yearly
Spray system Inspect 16 •
Air filter Clean/Replace 17 •
Fuel filter Inspect/Clean/Replace 17 •
Spark plug Inspect/Clean/Adjust/Replace 18 •
Carburettor Inspect/Replace and adjust 17 •
Cooling system Inspect/Clean 18 •
Silencer Inspect/Tighten/Clean 18 •
Starter Inspect - •
Fuel system Inspect 18 •
Screws, bolts and nuts Inspect, Tighten/Replace - •
IMPORTANT
Time intervals are maximum. Actual use and your experience will determine the frequency of required maintenance.
Record dates of monthly and yearly inspections.
NOTE
It is not necessary to apply grease/oil to pump.
If you have any questions or problems, please contact your dealer.

17
Maintenance and care
Cleaning air filter
1. Close choke and loosen screws.
2. Remove air cleaner cover (B) and air filter.
3. Then check and/or clean air filters by washing in a suitable
solvent when heavily soiled.
4. Dry filters before reinstalling.
Replacing fuel filter
1. Use a piece of metal wire or the like to pick up fuel filter (A)
through fuel tank opening.
2. Pull old filter from fuel line (B).
3. Install new fuel filter.
4. Make sure fuel filter goes to bottom of the tank.
Carburettor adjustment
Do not adjust the carburettor unless necessary.
If idling adjustment is required, turn adjustment screw located
abackpacksideofcarburettor.- Whenturningitanticlockwise,
engine speed is reduced.
When the unit is not to be used for a long time, drain fuel out
from fuel tank and carburettor.
NOTE
Clean air filter (A) after each use.
NOTE
If filter is excessive dirty or no longer fits properly, replace it.
NOTE
A clogged fuel filter will cause hard starting or poor engine
performance.
Keep fuel tank clean - do not allow dirt or debris to enter fuel
tank.
WARNING
YOU MAY ADJUST THE IDLE SPEED ONLY by turning the idle speed adjustment screw(T).
You must NOT carry out any Carburettor adjustment, other than the idle speed. All other adjustments MUST be per-
formed by an authorized service dealer, or serious personal injury may result due to malfunction of the engine.
CAUTION
When there is trouble with the carburettor, contact an authorized service dealer.
T: Idle speed adjustment screw
NOTE
When the carburettor cannot be adjusted properly with the idle
speed adjustment screw (T), you must contact an authorized
service dealer.

18
Maintenance and care
Cooling system maintenance Always keep cylinder fins (A) clean. Clogged cylinder fins will
cause engine to overheat. Clean out grass, mud, leaves, and
other debris with a wooden stick periodically.
Cleaning silencer Carbon deposits in silencer (A) will cause a drop in engine out-
put and overheating. Clean deposits from silencer.
Check fuel system Check before every use.
After refuelling, make sure fuel does not leak or exude from
around fuel pipe (A), fuel grommet (B) or fuel tank cap (C).
In case of fuel leakage or exudation, there is a danger of fire.
Stop using the machine immediately and request your dealer
to inspect or replace.
Check spark plug 1. Check plug gap. Correct gap is 0.6 mm to 0.7 mm.
2. Inspect electrode for wear.
3. Inspect insulator for oil or other deposits.
4. If the electrodesor terminals are worn, or if there are cracks
in the ceramics, replace them with new parts.
5. Tighten to 15 N·m - 17 N·m (150 kgf·cm to 170 kgf·cm).
∗The spark test (for checking whether the spark plug is spark-
ing) must be carried out by your dealer.
Bypass nozzle plate Clean bypass nozzle plate (A), if liquid chemical is not well
stirred-up in the tank.
IMPORTANT
Do not remove the silencer cover. If necessary,Please consult
your dealer.
a:0.6‑0.7mm
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