CSG-7410
OPERATOR’S MANUAL
ENGINE CUT-OFF SAW
CSG-7410
WARNING
The engine exhaust from this product contains chemicals known to the
State of California to cause cancer, birth defects or other reproductive
harm.
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
WARNING
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
ECHO, INCORPORATED
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
Printed in USA
X7503954100
INTRODUCTION
The ECHO model CSG-7410 Engine Cut-off saw is
a high-performance gasoline-powered tool designed for use with a recommended 350 x 4.7 x 20
mm (14 in. x 6/32 in. x 25/32 in.) abrasive wheel. A
water-flush attachment is available for dust control.
Use only ECHO’s wheels or other wheels having
a minimum spindle speed rating of 3820 rpm or
higher.
This manual provides the information necessary for
assembly, operation and maintenance of the cutoff saw as well as the wheels available for it. It is
important that you follow this information carefully.
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to
the State of California to cause cancer, birth
defects or other reproductive harm. Some
examples of these chemicals are:
• Lead from lead-based paints,
• Crystalline silica from bricks and cement
and other masonry products, and
• Arsenic and chromium from chemically
treated lumber.
Your risk from these exposures varies,
depending on how often you do this type
of work. To reduce your exposure to these
chemicals: work in a well ventilated area,
and work with approved safety equipment,
such as those dust masks that are specially
designed to filter out microscopic particles.
WARNING
Improper use or care of this unit, or failure to
wear proper protection can result in serious
injury.
Read the rules for safe operation and instructions in this manual.
Wear eye and hearing protection and a dust
mask when operating.
Breathing in asbestos fibers can pose a
serious health risk and may cause severe
or fatal respiratory diseases such as lung
cancer. Do not use your engine cut-off saw to
cut, damage, or disturb asbestos or products
using asbestos in any form. If you believe
you might be cutting asbestos, contact your
employer immediately.
CONTENTS
Introduction ............................................ 2
Symbols and Signs ................................ 3
Packing List ........................................... 5
Nomenclature of Parts ........................... 6
Operator Safety Precautions ................. 8
Operator Safety ..................................... 10
Abrasive Wheel Types and Uses ........... 12
Preparation for Use ............................... 15
Fuel and Lubricant ................................. 18
Specifications, descriptions and illustrations in this manual were accurate at the time of publication, and
are subject to change without notice. Illustrations may include optional equipment and accessories, and
may not include all standard equipment.
Copyright
CSG-7410
©
2018
All Rights Reserved.
Emission Data ....................................... 20
Operation ............................................... 20
Cutting Instruction ................................. 23
Maintenance and Care .......................... 24
Troubleshooting ..................................... 31
Storage After Use .................................. 32
Technical Data ....................................... 34
Warranty Registration Sheet .................. 34
Notes ..................................................... 35
2
SYMBOLS AND SIGNS
DANGER
The safety alert symbol accompanied by
the word “DANGER” calls attention to an
act or condition which WILL lead to serious
personal injury or death if not avoided.
WARNING
The safety alert symbol accompanied by
the word “WARNING” calls attention to an
act or condition which CAN lead to serious
personal injury or death if not avoided.
CAUTION
The safety alert symbol accompanied by
the word “CAUTION” calls attention to an
act or condition which may lead to minor or
moderate personal injury if not avoided.
Decals
CIRCLE AND SLASH SYMBOL
This symbol means the specific action
shown is prohibited. Ignoring these
prohibitions can result in serious or
fatal injury.
NOTE
This enclosed message provides tips for use,
care and maintenance of the unit.
IMPORTANT
The enclosed message provides information
necessary for the protection of the unit.
Locate the safety decals on your unit. The complete
unit illustration found in the “NOMENCLATURE OF
PARTS” section will help you locate them.
Make sure the decal is legible and that you
understand and follow the instructions on it. If a
decal cannot be read, a new one can be ordered
from your ECHO dealer.
3
CSG-7410
SYMBOL FORM
Symbol form/shape Symbol description/application Symbol form/shape Symbol description/application
WARNING!!
Read and follow all safety
precaution in the Operator's
Manual. Failure to follow
instructions could result in
serious personal injury.
Always wear an ear muffler,
a dust proof mask, goggles
and a helmet when operating
this machine. (ANSI Z87.1)
Choke control
Oil and gasoline mixture
Do not run the engine
indoors, or where there is
poor ventilation.
Cutting may cause sparks
from the cut-off wheel. Make
sure there is no flammable
substance nearby.
Kickback may force the
cutting-off wheel up and
back toward the operator
with a lightning-fast reaction.
Kickback can occur
whenever the upper-half of
the cutting-off wheel touches
an object while operating the
machine.
Usage of saw blades not
permitted.
L
Make sure there are no
breaks,cracks or warps.
Wheel rorating direction Max
spindle speed
Purge pump
Decompression device
Carburetor adjustment
- Low speed mixture
Carburetor adjustment
- High speed mixture
H
CSG-7410
Emergency stop
Keep away from fire.
Carburetor adjustment
- Idle speed
T
4
PACKING LIST
The ECHO product you purchased has been
factory pre-assembled for your convenience.
Due to packaging restrictions, wheel installation
and other assembly may be necessary.
ECHO engine cut-off saw
Operator's manual
OPERATOR’S MANUAL
ENGINE CUT-OFF SAW
CSG-7410
WARNING
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
ECHO, INCORPORATED
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
Printed in USA
X750 395-410 0
Warranty sheet
• •
• •
• •
• •
• •
After opening the carton, check for damage.
Immediately notify your retailer or ECHO dealer of
damaged or missing parts.
Use the packing list to check for missing parts.
13 x 19 mm T-wrench
Bar tool
Adapter (25.4 mm)
Coupler
Wheel
5
CSG-7410
NOMENCLATURE OF PARTS
3
23
2
23
23
4
13
12
5
11
6
10
23
7
8
9
23
15
1
OPERATOR’S MANUAL
ENGINE CUT-OFF SAW
CSG-7410
14
16
22
17
18
21
20
19
CSG-7410
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
ECHO, INCORPORATED
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
Printed in USA
WARNING
X750 395-410 0
6
NOMENCLATURE OF PARTS
1. Operator's manual - Included with unit.
Read before operation and keep for future
reference to learn proper, safe operating
techniques.
2. Front handle (for the left hand) - Support
handle located at the front of the engine
housing.
3. Wheel guard - A wheel guard which is intended to protect the operator from wheel contact, and also direct debris away from the
operator.
4. Wheel - Serving as a cutting tool.
5. Wheel mouting bolt - Bolt that secures the
flange.
6. Cutter flange - Part that secures the cutting
wheel.
7. Fuel tank cap - For closing the fuel tank.
8. Momentary stop switch - Button for momen-
tarily shorting ignition voltage, causing the
engine to stop. This is NOT an ON/OFF
Ignition switch.
9. Throttle trigger - Device activated by the
operator’s finger, for controlling the engine
speed.
10. Throttle trigger lockout - A safety lever which
must be depressed before the throttle trigger
can be activated in order to prevent the
accidental operation of the throttle trigger.
11. Choke control knob - Device for enriching the
fuel/air mixture in the carburetor to aid cold
starting. Also activates fast idle throttle latch.
12. Starter grip - Pull handle slowly until starter
engages then quickly and firmly.
When engine starts, return handle slowly.
Do not let handle snap back or damage to
unit will occur.
13. Air cleaner cover - Covers air cleaner.
14. Rear handle (for the right hand) - Support
handle located towards the rear of the
engine housing.
15. Water kit - Supplies water while cutting to keep
dust from scattering.
16. Clutch cover - Protective belt and clutch when
the engine cut-off saw is in use.
17. Arm mounting bolts - Secures the cut-off saw.
18. Pulley Cover - Protects the belt and pulley.
19. Wheel guard locking knob - For use when
changing the angle of the wheel guard.
Wheel guard knob - Grip and move this knob
20.
when changing the angle of the wheel guard.
21. Spark arrestor muffler - The spark arrestor
muffler controls the exhaust noise and
prevents hot, glowing particles of carbon
from leaving the muffler.
22. Decompression device - Device for lowering
the compression in the cylinder, to aid
starting.
23. Safety labels - Device for lowering the compression in the cylinder, to aid
starting.
7
CSG-7410
OPERATOR SAFETY PRECAUTIONS
Read this engine cut-off saw operator’s manual carefully.
Be sure you understand how to operate this saw properly before you use it.
Establish a training program for engine cut-off saw operators.
OPERATOR’S MANUAL
ENGINE CUT-OFF SAW
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
ECHO, INCORPORATED
400 Oakwood Road, Lake Zurich, Illinois 60047-1564
Phone : 847-540-8400
Printed in USA
3 m
WARNING
CSG-7410
X750 395-410 0
Use safety footwear, snug-fitting clothing and protective gloves.
Wear eye, hearing and head protection devices. Use ballistics chaps or pants
when necessary. Clothing of fire-resistant and non-meltable material should
be worn by emergency crews exposed to flames or high heat conditions.
Use caution when handling fuel. Put the fuel tank caps back tightly on both
the fuel container and the saw tank, move at least 3 m (10 ft.) from the
fueling point, and be sure there is no leakage of fuel from the fuel tank cap or
the fuel system before starting the engine. Avoid ignition from sparks.
DANGER
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.
WARNING
Do not run the engine indoors, or where there is poor ventilation.
Engine fumes contain deadly poisonous carbon monoxide.
IMPORTANT
Check before every use.
After refuelling, make sure fuel does not leak from around fuel pipe, fuel
grommet or fuel tank cap.
In case of fuel leakage there is a danger of fire. Stop using the machine
immediately and request your dealer to inspect or replace.
It is not permitted to fill fuel above the shoulder level of fuel tank.
Adjust Wheel guard
Wheel guard locking knob
CSG-7410
Operate this gasoline engine cut-off saw only in well-ventilated areas.
Do not store the unit with fuel in its tank, because a fuel leak could start a
fire.
Do not cause sparks in any area where there are flammable materials.
Start the engine cut-off saw on the ground with the cutting wheel completely
in the clear.
Do not drop-start the engine cut-off saw, or start it if the wheel is obstructed
by the ground or any other object.
Do not allow other persons to be closer than 9 m (30 ft.) when you are
starting or cutting with the saw. Bystanders should wear hearing and eye
protection. Do not start cutting unless you have good footing and the work
area is clear.
Do not let someone hold the work you are cutting.
Adjust the wheel guard to a position where the sparks and debris from the
wheel will be thrown away from you. Turn the wheel guard locking knob
counterclockwise, grasp the wheel guard knob and move the wheel guard to
the desired position, slowly release it and secure the wheel guard with the
locking knob. Do not operate if the wheel guard is damaged, missing from
the unit, improperly positioned, or cannot be locked in proper position.
8
Keep to Left of
Cutting Line
Keep a firm grip on the engine cut-off saw with both hands, the right hand
on the rear handle, and the left hand on the front handle when the engine is
running. Use a firm grip with thumbs and fingers encircling the saw handles.
A firm grip will help you to keep control if the saw kickback toward you, or the
thrust of the rotating wheel pulls it away from you. Never operate the engine
cut-off saw with only one hand.
Be careful around electrical cables, sewer and gas lines to avoid cutting
them.
Keep to the left of the saw so that no part of your body is in line with the
cutting wheel. Keep all parts of your body away from the cutting wheel when
the engine is running.
Do all cutting at full throttle. Cutting at less than full speed can damage the
clutch by allowing it to slip. Accelerating from slow to full speed while the
wheel is in cutting contact may cause a violent push or pull reaction resulting
in loss of control.
It will take time for the wheel to coast to a stop after the throttle trigger is
released. Be sure to wait for rotation to stop before releasing your grip on the
saw handles. Always shut off the engine before setting down the saw.
Never leave the engine cut-off saw while the engine is running.
Put no Side
Pressure on
the Wheel
Check for Wheel
Damage
Always carry the saw with the engine stopped and the hot muffler away from
your body. Do not touch a hot muffler, wheel, cylinder cover or cylinder.
Do not touch high voltage parts such as spark plug and spark plug lead.
Remove the wheel from the saw prior to transport or storage. Store wheels
properly to avoid damage from uneven pressure, moisture and extreme
temperatures.
Do not grind on the side of an abrasive engine cut-off saw wheel, or put any
side pressure on the wheel during cutting. Avoid letting the saw tilt or wobble
off line.
Use new, properly qualified wheels of correct diameter, thickness and
mounting hole size. The wheel blotters and the mounting flanges should be
in good condition, and the mounting bolt should be tightened to the proper
torque.
Inspect the wheel carefully for cracks, edge damage and warping before use.
Do not use any wheel that has been dropped.
All adjustment and maintenance instructions in this operator’s manual
should be performed as necessary, and may be done by the saw owner. All
other service or adjustment should be performed only by a qualified ECHO
servicing dealer.
9
CSG-7410
OPERATOR SAFETY
Protective Equipment
WARNING
Engine cut-off saw users risk injury if the
saw is used improperly, and / or safety precautions are not followed. Protective clothing
and safety gear must be worn when operating a engine cut-off saw.
Hard Hat
Hearing Protection
Goggles (Z 87)
Dust Mask or Respirator
Trim-Fitting
Protective Clothing
Heavy Duty non-Slip Gloves
Chaps or High Boots
for Spark Protection
You must wear eye protection goggles qualified
to the CE mark or the latest ANSI Standard Z 87.
(Z 87 is stamped on the goggles). These goggles
also must be worn under a face screen if one is
used. A face screen should be worn when there
is a risk from flying debris.
Hearing protection should be worn. (See
“DANGER,” page 23)
Wear a respirator or dust mask (APF10) when
cutting concrete, stone, brick or other materials
where fine dust is produced while cutting. Use
water flush to keep down the dust.
Clothing should be made from fabric containing
natural fibres that resist catching fire and do not
melt. The clothing should cover as much skin
area as possible. Clothing should offer freedom
of movement, but should not be too loose or
baggy. Do not wear ties or jewellery.
Wear heavy duty boots with non-slip soles. The
boots should be high enough for shin protection,
or you should wear chaps for shin protection.
Wear non-slip, heavy duty work gloves to
improve your grip on the saw handles. The
gloves also help to reduce the transmission of
machine vibrations to your hands.
Heavy Duty Boots
with non-Slip Soles
Protecting Others
No Bystanders!
Spectators children and fellow workers must be
warned to come no nearer than 9 m (30 feet) while
the saw is in use. Shut off the saw immediately if
some one moves closer to you than 9 m (30 feet).
Persons working in the area near you should wear
the same protective equipment as the saw operator
if endangered by risky flying debris.
CSG-7410
10
Physical Condition
Your judgment and / or dexterity may be impaired
if you are ill or have taken alcohol or other
substances known to affect the way you would
function normally. Operate only when sound in
mind and body.
WARNING
Precautions Against Vibration and Cold
It is believed that a condition called
Raynaud’s Phenomenon which affects the
fingers of certain individuals is brought
about by exposure to cold and vibration.
Accordingly, your ECHO Engine cut-off saw
has shock mounts designed to reduce the
intensity of vibration received through the
saw handles. Exposure to cold and vibration
may cause tingling and burning, followed by
loss of colour and numbness, in a person’s
fingers. We strongly recommend your
taking the following precautions because the
minimum exposure which might trigger the
ailment is unknown.
Keep your body warm – especially head,
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 engine cut-
off saw operation. Try to fill a part of each
work day with jobs where operating this
saw or
other hand-held power tools are 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.
11
CSG-7410
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