Echo DM-4610 User manual

X750-002 155
X750102-5005
OPERATOR’S MANUAL
KNAPSACK TYPE
DUSTER/MIST BLOWER
DM-4610
WARNING DANGER
READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY.
©2000
ENGLISH
(Original instructions)
GB
Printed in Japan 1001Ak 0897 ES

2
DM-4610
CONTENTS
INTRODUCTION
ECHO DUSTER/MIST BLOWER is lightweight, high-
performance, petrol engined knapsack units designed
for spreading powder, granule, Iiquid chemical and
fertilizer.
This Manual provides the information necessary for
assembly, operation and maintenance. You must read
this Manual to understand the safe and effective
operation of your ECHO product.
INTRODUCTION ........................................................ 2
DECALS AND SYMBOLS .......................................... 2
RULES FOR SAFE OPERATION .............................. 3
DESCRIPTION ........................................................... 6
ASSEMBLING ............................................................ 7
OPERATlON .............................................................. 10
OPERATING MIST BLOWER .................................... 12
OPERATING DUSTER .............................................. 13
MAINTENANCE AND CARE ..................................... 14
TROUBLE SHOOTING .............................................. 16
STORAGE .................................................................. 17
SPECIFICATIONS ..................................................... 18
DECLARATION OF CONFORMlTY ........................... 19
DECALS AND SYMBOLS
Finger severing
Wear eyes, ears and head
protection
Symbol form/
shape
Symbol description/application Symbol form/
shape
Symbol description/application
Carefully read the operator’s
manual
Circle and slash symbol means
whatever is shown is prohibited.
Petrol and oil mixture
Emergency stop
This symbol accompanied by the
words WARNING and DANGER
calls attentions to an act or a
condition which can lead to
serious personal injury or death.
Hot surface objects
This enclosed message provides
tips for use, care and maintenance
of the unit.
CAUTION indicates a potentially
hazardous situation, if not avoided,
may result in minor or moderate
injury.
CAUTION NOTE
Locate this safety decal on your unit. The complete unit illustration found in the “DESCRIPTION” section, will help
you locate them. Make sure the decal is legible and that you understand and follow the instructions on them. If a
decal cannot be read, a new one can be ordered from your ECHO dealer.
Part number X505-002310 Part number 890160-09461

3DM-4610
RULES FOR SAFE OPERATION
OPERATOR SAFETY
WARNING DANGER
USERS RISK INJURY TO THEMSELVES AND
OTHERS IF THE UNIT IS USED IMPROPERLY,
AND/OR SAFETY PRECAUTIONS ARE NOT
FOLLOWED. PROPER CLOTHING AND SAFETY
GEAR MUST BE WORN WHEN OPERATING UNIT.
• Read this Manual carefully. Be sure you understand
how to operate this unit properly before you use it.
• Wear non-skid sole shoes. Do not wear open-toed
shoes or operate unit while bare footed.
• Wear proper clothing to legs and other exposed parts
of your body.
• Wear eye, breathing and hearing protection devices.
• Secure hair so it is above shoulder length.
• Use caution when handling fuel. The fuel tank may be
under pressure. Always loosen the fuel cap and wait
for pressure to be equalized before removing the cap.
Put the fuel caps back tightly on both the fuel can and
the fuel tank. Move at least 3 m from the refuelling
point and be sure there is no leakage of fuel from the
fuel cap or the fuel system before starting the engine.
• Wipe any spilled fuel off the unit.
• Operate this petrol engine powered equipment in a
well-ventilated area only.
• Do not operate this unit in closed areas-such as
garages, inside building, sheds, etc.
• Start the unit on the ground with the throttle lever at
start position. Do not start if the pipe is obstructed by
the ground or any other object.
• Do not start engine on operator’s back.
• Inspect area where this unit will be used. Remove
stones, metal objects and any other object that could
cause injury or damage the unit.
• Do not use a unit on unstable footings.
• Do not allow other persons or pets in the area when
starting or using the unit.
• Do not point the pipe in the direction of people or
animals.
• Keep a firm grip on the unit at all times.
• Keep hands and body away from hot surfaces such as
silencer and cylinder area when handling the unit to
prevent from heat injury.
• Never attempt to use an incomplete machine or one
fitted with unauthorized modification.
• A fully loaded 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.
• This unit is designed for upright use only, do not lay
down or lean excessively to avoid leakage of
chemicals when operating and transporting.
3 m
Operator’s manual

4
DM-4610
REDUCE NOISE
NOTE
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.
• Wear hearing protection when operating the unit.
REDUCE CHANCES OF DAMAGE
• Do not use the unit in a windy day or rainy day to avoid
chemical drift.
• 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.
• Dust and mist blowing must be done leewardly.
Choose morning or evening when it is not so windy,
and the ground temperature reserves, so as to
minimize dispersion Iosses and enhance chemical
adhesion effect and for less hazardous operation.
PHYSICAL CONDITION
WARNING DANGER
AVOID DIRECT CONTACTOR INJESTION OF
CHEMICALS YOU MAY USE. CONSULT THE LABEL
THE CHEMICALS,YOU MAY USE FOR
ADDITIONAL 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.
HOT HUMID WEATHER
Heavy protective clothing can increase operator fatigue
which may lead to heat stroke. Delay heavy work until
the temperature drops.
EYE, BREATHING AND HEARING
PROTECTION
• Wear eye protection goggles.
• Wear breathing protection such as officially approved
toxic dust and mist respirator.
• Wear hearing protection. If this guideline is not
followed, hearing loss can occur.
Your judgement and/or dexterity may be impaired if you
are ill, are taking medication, and/or have taken alchol
or other substances known to affect the way you would
normally function. Operate this unit only if you are in
good physical and mental health.

5DM-4610
WEAR PROPER CLOTHING
• Snug fitting, durable clothing should be worn. Trousers
should have long legs. DO NOT WEAR SHORTS. Do
not wear loose fitting clothing, scarfs, neckties, jeweiry
or any item that may be drawn or tangled in the fan.
• Wear chemical resisting work clothes.
• Wear shoes with non-skid soles. DO NOT wear open
toed shoses or operate unit bare footed.
• Wear no-slip, heavy duty work gloves to improve your
grip on the pipe.
Wearing rubber gloves and cap to prevent direct
contact with chemicals.
Painful or numb fingers?
See your doctor
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 color and
numbness in the fingers.
The following precautions are strongly recommended
because 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
duster/mist blower 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,
consult your physician before exposing yourself further
to cold and vibration.
REPETITIVE STRESS INJURIES
It is believed that overusing the muscles and tendons of
the fingers, hands, arms and shoulders may cause
soreness, swelling, numbness, weakness and extreme
pain to the areas just mentioned. Certain repetitive hand
activities may put you at a high risk for developing a
repetitive stress injury (RSI).
To reduce the risk of RSl, 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
diagnosed, the more likely permanent nerve and
muscle damage can be prevented.

6
DM-4610
1
DESCRIPTION
1. OPERATORS MANUAL - Included with unit. Read
before operation and keep for future reference to
learn proper, safe operating techniques.
2. CHEMICAL TANK - Contains chemical.
3. SHOULDER HARNESS - Used to support unit on
operator’s back.
4. CUSHION BACK-PLATE
5. THROTTLE CONTROL LEVER - Activated
operator’s hand for controlling the engine speed.
6. SHUTTER CONTROL LEVER - Controls discharge
volume of powder and granule chemical and
fertilizer.
7. AIR CLEANER COVER - Covers air filter.
8. FUEL TANK CAP - For closing the fuel tank.
9. CHOKE LEVER - Device for enriching the fuel/air
mixture in the carburetor to aid starting.
10. PURGE BULB - Pumping purge bulb before
starting draws fresh fuel from fuel tank to carburetor
replacing air and old fuel.
11. CARBURETTOR
12. STARTER HANDLE - Pull handle to start the
engine.
13. SILENCER - The silencer controls the exhaust
noise and prevents hot, glowing particles of carbon
from leaving the silencer.
14. SPARK PLUG
15. SAFETY DECAL - Part number X505-002310
16. SAFETY DECAL - Part number 890160-09461
2
3
4
5
6
7 8 910 11 12
13
14
15
16
X750-002 154
X750102-5004
OPERATOR’S MANUAL
KNAPSACK TYPE
DUSTER/MIST BLOWER
DM-4610
WARNING DANGER
READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURETO DO SO COULD RESULT IN SERIOUS INJURY.
© 2000
ENGLISH
(Original instructions)
GB

7DM-4610
1
2
3
4
5
6
7
8
9
14
13
15
Pipe/Tube connection
10
12
11
16
17
ASSEMBLING
MISTING
Chemical tank assembly MISTING PARTS
1. Chemical tank cap
2. Clamp
3. Filter
4. Pressure tube
5. Nut
6. Pressure tube
7. Clamp
8. Plate
9. Bracket
10. Holder
11. Screw
12. Pin
13. E-Ring
14. Shutter control arm
15. Pin
16. Discharge tube
17. Outlet connector
18. Clamp
19. Packing
20. Flexible pipe
21. Packing
22. Clamp
23. Straight pipe
24. Rubber band
25. Straight pipe
26. Curbed pipe
27. Nozzle
28. Discharge tube
29. Valve .... secured by clamp
30. Hook

8
DM-4610
1
2
3
4
5
6
7
8
9
10
11 12
13
14
15
16
17
18
19
20
21
22
1
20
17
9
INSTALLING DUSTING DEVICE
Chemical tank
1. Remove Snap pin (1) and Control lever rod (2) from
Lower tank (10).
Keep Snap pin (1) for dusting device.
2. Remove Pipe (5) from Chemical tank and Fan case.
Plug two Pipe connectors (4, 7) with rubber Plugs
(3, 6).
3. Remove Chemical tank assembly from the body.
4. Loosen four screws (8) and separate Chemical tank
holders (9).
5. Loosen Hollow nut (12) and remove Outlet nipple
(13) from Chemical tank. Plug the hole with rubber
plug (14).
6. Remove the Pipe (16) from Chemical tank cap, and
Tank bottom plate (11), Pipes, Filter (15) and
related parts from the Chemical tank. Keep these
parts for misting device.
7. Remove two screws fastening Shutter arm (18) to
Shutter shaft (19).
8. Engage the Shutter arm (18) with hook of Shutter
(20). Rotate the Shutter shaft (19) to prevent the
plate on the end of Shutter shaft (19) from interfer-
ence when assembling Chemical tank holders (9).
9. Pile up Chemical tank flange, shutter (20) and
Lower tank assembly (17), then hold with Chemical
tank holders (9) as shown and tighten four screws (8).
Note:
For easier installation, set the chemical tank upside
down then put the Shutter assembly (20) and Lower
tank assembly (17) on the Chemical tank flange
then assemble tank holders.
10. Locate the screw holes with Shutter arm (18)
turning the Shutter shaft (19) and tighten the Shutter
arm (18) with two screws.
11. Install Chemical tank assembly to the body.
12. Refer to page 15, set the Shutter control arm (21)
and tighten with Nut (22).

9DM-4610
20
17
21
22
9
8
DUSTING
Chemical tank assembly DUSTING PARTS
8. Screw
9. Holder
14. Plug
17. Bracket
20. Shutter assembly
21. Shutter control arm
22. Nut
23. Clamp
24. Flexible pipe
25. Clamp
26. Straight pipe
27. Straight pipe
28. Hook
Pipe connection
24
28
27
26
25
23
14

10
DM-4610
OPERATION
HANDLING FUEL
WARNING DANGER
• HANDLE FUEL CAREFULLY. IT IS EXTREMELY
FLAMMABLE. FOLLOW ALL RULES LISTED
BELOW TO HELP PREVENT FIRE OR
EXPLOSION WHICH MAY RESULT IN SEVERE
INJURY OR DEATH.
• AFTER REFUELLING TIGHTEN FUEL CAP
FIRMLY AND CHECK FOR LEAKAGE. IN CASE
OF FUEL LEAKAGE REPAIR BEFORE STARTING
OPERATION SINCE THERE IS A DANGER OF
FIRE.
• Never smoke or allow flame or sparks near fuel.
• Always fill the fuel tank outdoors. Never pour fuel
indoors.
• Always remove the fuel cap slowly to relieve any
pressure buildup in the tank.
• Never refuel the engine when it is hot or running.
• Always use an approved, safe fuel container.
• It is not permitted to fill fuel above the shoulder level of
fuel tank.
• After fuelling, always wipe away spilled fuel.
• Always move at least 3 m away from the fuelling spot
before starting the engine.
• Never store the unit with fuel in the tank a fuel leak
could start a fire.
FUEL
•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.
•Recommended mixture ratio; 50 : 1 for ISO-L-EGD
Standard (ISO/CD 13738), JASO FC,FD grade and
ECHO Premium 50 : 1 oil and 25 : 1 for JASO FB
grade oil.
- Do not mix directly in engine fuel tank.
- Avoid spilling petrol or oil. Spilled fuel should always
be wiped up.
- Handle petrol with care, it is highly inflammable.
- Always store fuel in approved container.
NOTE
Stored fuel ages. Do not mix more fuel than you
expect to use in thirty (30) days. Do not mix directly in
fuel tank.
CHEMICALS
WARNING DANGER
• 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
APPLICATION ATTACHED TO THE CHEMICALS
AND TREAT THEM WITH CARE.
• Stop engine and put the unit down when filling
chemicals.
• Be sure to close valve or shutter before filling
chemicals.
• Do not overfill chemicals and wipe spillage away
immediately.
• Follow all precautions and instructions in the label of
chemicals when handling.
• Never allow untrained persons or children to handle
chemicals and the unit.
• Secure chemical tank cap firmly to avoid leakage of
chemicals during the operation.
NOTE
Do not dilute chemicals directly in the chemical tank.
Always use fresh, dry (powder/granule/fertilizer)
chemicals.
Throttle control
lever
Shutter control lever Carburettor Starter handle
Fuel tank
Spark plug
Straps
Cushion
back-plate
Chemical tank
Shoulder level
Fuel tank
3 m

11 DM-4610
Operating position
Start position
Stop position
Throttle control lever
Shutter control lever
• Move choke lever down to OPEN position. Restart the
engine and allow to warm up for a few minutes, before
using.
NOTE
•Check unit for loose nuts, bolts and screws before
starting.
•Always clear work area of debris before starting
operation.
•Always hold the unit firmly on the ground.
•When pulling starter handle, use short pulls, 1/2 to
2/3 of rope length.
•Do not allow the starter handle to snap back against
the housing.
Operating position
Start position
Stop position
Throttle control lever
Shutter control lever
STARTING WARM ENGINE
• Move throttle control lever to START position 1 or 2.
• Move choke lever up to OPEN position.
• If fuel tank is not empty, pull starter one to three times
and engine should fire. Do not use choke.
• If fuel tank is empty, after refilling, push the purge bulb
(until fuel is visible in clear fuel return line) and then
pull the starter. Do not use choke.
NOTE
If engine does not start after 4 pulls, use cold starting
procedures.
STOPPING ENGINE
• Move shutter control lever down to CLOSE position
(duster) or close valve (mister).
• Then let engine run at idle for cooling down.
• Move throttle control lever down STOP position.
WARNING DANGER
IF ENGINE DOES NOT STOP, MOVE CHOKE
LEVER UP TO CLOSE POSITION TO STALL
ENGINE. HAVE YOUR ECHO DEALER INSPECT
AND REPAIR.
NOTE
Carburettor has been correctly adjusted in factory. Do
not readjust yourself unless it is necessary. It should
be readjusted by ECHO dealer.
• Move choke lever up to CLOSED position.
• Move shutter control lever down to CLOSE position
(duster) or close valve (mister).
• Push purge bulb until fuel is visible in clear fuel return
line.
• Move throttle control lever to START position 1 or 2
and securely hold the machine, pull starter handle
several times until first firing sound.
WARNING DANGER
WHEN ENGINE IS STARTED, CONFIRM IF THERE
IS NOT ANY ABNORMAL VIBRATION OR SOUND.
IF THERE IS ABNORMAL VIBRATION OR SOUND,
ASK YOUR DEALER TO REPAIR.
STARTING COLD ENGINE
Choke lever
Purge bulb
Fuel return line
Starter handle
Choke lever
Purge bulb
Fuel return line
Starter handle

12
DM-4610
OPERATING MIST BLOWER
NOTE
Be sure that valve is closed before starting engine.
FILLING CHEMICAL TANK
• Close valve.
• Fill liquid chemical through filter into tank. Stir up after
filling to avoid chemical deposits at bottom of tank.
• Secure tank cap firmly to avoid air pressure leakage. If
not, it results in poor spraying.
Collar nut
Volume adjuster
Collar nut
Collar
Collar
Nozzle
ADJUSTING SPRAY PATTERN
The spray pattern can be adjusted from the straight
stream to an open spray by adjusting the position of
collar.
• Loosen collar nut and pull collar forward to obtain a
straight stream.
Setting number 1 2 3 4
Discharge volume 1.1 2.1 3.2 4.3
(L/min)
ADJUSTING SPRAY VOLUME
The spray volume can be adjusted by lining up the
number with mark as shown. The spraying volume is
prescribed as follows.
• Push collar backward to obtain a wide spray.
CLEANING CHEMICAL TANK
Chemical tank should be cleaned after each use.
1. Fill chemical tank with clear water and run engine.
2. Open valve to pour water out to clean internal parts
of misting device.
NOTE
• Keep nozzle at a distance of 70 cm far from plants
to prevent damage.
• Make job done before diluted chemical depositting
at the bottom of the chemical tank.
70 cm
Throttle control
lever
Shutter control lever Carburettor Starter handle
Fuel tank
Spark plug
Straps
Cushion
back-plate
Chemical tank

13 DM-4610
OPERATING DUSTER
ADJUSTING DISCHARGE VOLUME
Fertilizer
Shutter opens fully by placing shutter
control lever in the top position for
maximum volume discharge.
Shutter control arm position Application
Powder/granule
Shutter opens partially by placing
shutter control lever in the top position
for medium to small volume discharge.
Stranded wire
Shutter control arm
NOTE
Fine adjustments can be made by shutter control
Iever position as required.
Ground chain
Operating position
Start position
Stop position
Throttle control lever
Shutter control lever
FILLING CHEMICAL TANK
1. Close shutter assembly by setting shutter control
lever down to bottom position.
2. Fill tank with chemicals.
3. Secure tank cap firmly to avoid chemical leakage.
THROTTLE CONTROL LEVER POSITION
Make sure that shutter assembly is closed and set
throttle lever to operating position. (Set throttle lever to
intermediate position or position 2 to 5).
NOTE
Be sure that shutter control lever is in the bottom
position before starting the engine.
STATIC ELECTRICITY
In a certain condition, when operating dust blower, you
may feel shock of static electricity. Static electricity itself
does not affect your health but stings uncomfortably.
Optional ground chain and stranded wire are available
through your ECHO dealer for eliminating static
electricity.

14
DM-4610
CLEANING AIR FILTER
MAINTENANCE AND CARE
Fuel tank cap
SILENCER AND CYLINDER FINS
• Clean silencer by removing carbon deposits at outlet
port. This should be done periodically to maintain
constant performance of engine.
• Always keep cylinder fins clean.
Clogged cylinder fins will cause engine to overheat.
Clean out grass, mud, Ieaves, and other debris with a
wooden stick periodically.
Cylinder fin
Outlet port
Fuel filter
• Pick up the fuel filter through fuel tank opening with a
piece of steel wire or the like.
• Remove old filter from fuel line.
• Install new fuel filter.
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.
• Make sure fuel filter goes to bottom of the tank
when installing.
REPLACING FUEL FILTER
• Close choke, remove air cleaner cover, grids, air
filters. Then check and/or clean air filters by washing in
a suitable solvent when heavily soiled.
• Dry filters before reinstalling.
NOTE
Clean air filter after each use.
Fuel line
Air cleaner cover
Grids
Air filters
0.6 mm to 0.7 mm
NOTE
Do not overtighten spark plug.
CHECK SPARK PLUG
• Check plug gap. Correct gap is 0.6 to 0.7 mm.
• Inspect electrode for wear.
• Inspect insulator for oil or other deposits.
• Replace plug if needed and tighten to 15 - 17 N•m
(150 to 170 kgf•cm).
CHECK FUEL SYSTEM
•Check Before Every Use.
• After refuelling make sure fuel does not leak or exude
from around fuel pipe, fuel grommet or fuel tank cap.
• 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.

15 DM-4610
AREA MAINTENANCE PAGE BEFORE USE MONTHLY YEARLY
Air Filter Clean/Replace 14 •
Fuel Filter Inspect/Clean/Replace 14 •
Fuel line Inspect - •
Spark plug Inspect/Clean/
Adjust/Replace 14 •
Carburettor Inspect/Replace and adjust - •
Cooling System Inspect/Clean 14 •
Silencer Inspect/Tighten/Clean 14 •
Starter Rope Inspect/Replace - •
Fuel System Inspect 14 •
Screws, Bolts and
Nuts Inspect, Tighten/Replace - •
SERVICE GUIDE
IMPORTANT
Time intervals shown are maximum. Actual use and your experience will determine the frequency of
required maintenance.
Record dates of monthly and yearly inspections.
Remove all dirt, Ieaves, and other debris from fan case
grid. Care should be taken not to let foreign objects
enter fan case through grid. It surely cause damage to
fan and fan case.
WARNING DANGER
• TAKE PRECAUTIONS TO KEEP HAIR FROM
BEING DRAWN INTO FAN.
• DO NOT PLACE HAND BETWEEN ENGINE AND
BACKPACK HOUSING WHILE ENGINE IS IN
OPERATION. INJURY COULD OCCUR. BE SURE
THE ENGINE IS FULLY STOPPED BEFORE
INSERTING HANDS TO REMOVE ANY DEBRIS. IF
AVAILABLE, USE A UTENSIL TO REMOVE THE
DEBRIS.
FAN CASE GRID
Fan case grid should be cleaned every day. Clogged
grid will cause engine to overheat.

16
DM-4610
Trouble
Engine - starts hard Cause Remedy
- does not start
Engine Fuel at No fuel • Fuel filter clogged • Clean or replace
cranks carburettor at carburettor • Fuel line clogged • Clean
• Carburettor • Ask your ECHO dealer
Fuel at No fuel • Carburettor • Ask your ECHO dealer
cylinder at cylinder
Muffler wet • Fuel mixture is too rich • Open choke
with fuel • Clean/replace air filter
• Adjust carburettor
• Ask your ECHO dealer
Spark at No spark • Electrical problem • Ask your ECHO dealer
end of at end of
plug wire plug wire
Spark at No spark at • Spark gap incorrect • Adjust 0.6 mm to 0.7 mm
plug plug • Covered with carbon • Clean or replace
• Fouled with fuel • Clean or replace
• Spark plug defective • Replace plug
Engine • Internal engine problem • Ask your ECHO dealer
does not
crank
Engine Dies or • Air filter dirty • Clean or replace
runs accelerates poorly • Fuel filter dirty • Clean or replace
• Fuel vent plugged • Clean
• Spark plug • Clean and adjust/replace
• Carburettor • Adjust
• Cooling system plugged • Claen
• Exhaust port/silencer plugged • Clean
No mist • Valve closed (or partially • Open
discharge/ closed)
poor mist • Valve clogged • Clean
discharge • Discharge pipe clogged • Clean
• Nozzle clogged • Clean
• Loosened chemical tank cap • Secure
No/poor Malfunction of • Frozen shutter • Clean or replace
discharge of shutter • Distortion of shutter • Replace
dust/granule/ mechanism mechanism
fertilizer • Loosening/dislocation of • Adjust/secure
shutter linkage
• Misposition of shutter • Adjust
control arm
• Damped/aged chemical • Use fesh/dry chemical
Chemical • Foreign substance in • Remove/use fresh chemical
cause the chemical
• Hardened chemical • Crush well
• Loosened chemical tank cap • Secure
Poor • Unstable seating of • Secure
preparation chemical tank mount
TROUBLE SHOOTING
WARNING DANGER
• SERVICING OF THIS MACHINE, OTHER THAN ITEMS LISTED IN THE OPERATOR’S MANUAL, SHOULD BE
PERFORMED BY COMPETENT SERVICE PERSONNEL.
• FUEL VAPORS ARE EXTREMELY FLAMMABLE AND MAY CAUSE FIRE AND/OR EXPLOSION. NEVER
TEST FOR IGNITION SPARK BY GROUNDING SPARK PLUG NEAR CYLINDER PLUG HOLE, OTHERWISE
SERIOUS PERSONAL INJURY MAY RESULT.

17 DM-4610
STORAGE
5. Tighten all the screws, bolts and nuts.
6. Drain the fuel tank completely and pull the recoil
starter handle several times to remove fuel from the
carburettor.
7. Remove the spark plug and pour 1/2 tablespoon of
fresh, clean, two-stroke engine oil into the cylinder
through the spark plug hole.
A. Place a clean cloth over the spark plug hole.
B. Pull the recoil starter handle 2 or 3 times to
distribute the oil inside the engine.
C. Observe the piston location through the spark
plug hole. Pull the recoil starter handle slowly
until the piston reaches the top of its travel and
leave it there.
8. Install the spark plug (do not connect ignition cable).
9. Remove pipe assembly from unit.
LONG TERM STORAGE
(Over 30 Days)
Do not store your unit for a prolonged period of time (30
days or longer) without performing protective storage
maintenance which includes the following:
1. Store unit in a dry, dust free place, out of the reach
of children and other unauthorized persons.
WARNING DANGER
DO NOT STORE IN ENCLOSURE WHERE FUEL
FUMES MAY ACCUMULATE OR REACH AN OPEN
FLAME OR SPARK.
2. Drain or take out remaining chemical from the tank.
Clean inside of chemical tank, shutter and
discharge lines.
3. Remove accumulation of grease, oil, dirt and debris
from exterior of unit.
4. Perform all periodic lubrication and services that are
required.
NOTE
• For future reference, you should keep this
operator’s manual.
• If this operator’s manual has become illegible
through impairment or is lost, please purchase a
new one from your ECHO dealer.
• When renting a machine together with this
operator’s manual provides explanation and
instruction, please rend out the machine together
with this operator’s manual to a person who
operates the borrowed machine.
• When transferring a product, please deliver it
attaching the operator’s manual.
X750-002 154
X750102-5004
OPERATOR’S MANUAL
KNAPSACK TYPE
DUSTER/MIST BLOWER
DM-4610
WARNING DANGER
READ INSTRUCTIONS CAREFULLY AND FOLLOW RULES FOR
SAFE OPERATION.
FAILURETO DO SO COULD RESULT IN SERIOUS INJURY.
©2000
ENGLISH
(Original instructions)
GB
Manufacturer
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
Authorized Representative in Europe
Atlantic Bridge Limited
Atlantic House, PO Box 4800, Earley, Reading RG5 4GB, United Kingdom

18
DM-4610
SPECIFICATIONS
DM-4610
Mass
without blower pipes and related parts kg 11.2
Volume
fuel tank L 1.7
External dimensions
length ×width ×height mm 390 ×505 ×735
Engine
type Air cooled 2-stroke single cylinder
engine displacement mL(cm3) 44.0
maximum shaft brake power, measured in
accordance with ISO 8893 kW 2.0
engine speed at maximum engine power r/min 7500
carburettor Diaphragm type
ignition Flywheel magneto CDI system
spark plug NGK BPMR7A
starter Recoil starter
Fuel Regular grade petrol. Minimum 89 Octane unleaded
petrol is recommended. Do not use fuel containing
methyl alcohol or more than 10 % of ethyl alcohol.
oil Two stroke, air-cooled engine oil.
ratio 50 : 1 for ISO-L-EGD Standard (ISO/CD 13738),
JASO FC, FD grade and ECHO Premium 50 : 1 oil
and 25 : 1 for JASO FB grade oil.
fuel consumption at maximum engine power L/h 1.2
specific fuel consumption at maximum engine
power g/(kW•h) 505
Sound pressure level
(Referred to EN 27917) : LpAav = dB (A) 98
Sound power level
(ISO 11094) : LWAav = dB (A) 115
Vibration levels (Referred to ISO 7916)
idling m/s24.0
racing m/s25.8
Blower Centrifugal type
Chemical Tank Capacity L 23
Misting
liquid feeding system Pressurized air system
mist adjusting system Nozzle valve control
max mist discharge L /min 4.3
Specifications, descriptions and illustrative material in
this literature are as accurate as known at the time of
publication, but are subject to change without notice.
Illustrations may include optional equipment and
accessories, and may not include all standard
equipment.

19 DM-4610
GB
DECLARATION OF CONFORMITY
The undersigned manufacturer:
YAMABIKO CORPORATION
7-2 SUEHIROCHO 1-CHOME
OHME ;TOKYO 198-8760
JAPAN
declares that the hereunder specified new unit:
DUSTER / MIST BLOWER
(Knapsack type)
Brand : ECHO
Type : DM-4610
complies with:
*the requirements of Directive 98/37/EC (1998)
(and 2006/42/EC: from 29th December 2009)
*the requirements of Directive 2004/108/EC
(use of harmonized standards EN ISO 14982)
*the requirements of Directive 2002/88/EC
*the requirements of Directive 2000/14/EC
Conformity assessment procedure followed ANNEX V
Measured sound power level : 112 dB(A)
Guaranteed sound power level : 115 dB(A)
DM-4610 Serial Number 36002526 and up
Tokyo,
October 1st 2009
K. OYURI, GENERAL MANAGER
The authorized representative in Europe who is
authorized to compile the technical file.
Company: Atlantic Bridge Limited
Address: Atlantic House, PO Box 4800,
Earley, Reading RG5 4GB, United Kingdom
Mr. Philip Wicks
YAMABIKO CORPORATION

7-2 SUEHIROCHO 1-CHOME, OHME, TOKYO 198-8760, JAPAN
PHONE: [phone]. FAX: [phone].