Shindaiwa EC7500 User manual

SHINDAIWA OWNER’S AND OPERATOR’S MANUAL
EC7500/EC7600
ENGINE CUTOFF SAW
Part Number 82044 Rev. 7/07
Read this manual and familiarize yourself with its contents.
This unit is designed primarily for cutting construction materials and
metal according to the type of cutting wheel installed.
To minimize the risk of injury to yourself and others, always wear hearing
protection, a dustproof mask, goggles and a helmet when operating this unit.
Keep this manual handy so you can refer to it when required.
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WARNING!

Introduction
The Shindaiwa EC7500_7600 cutoff saw
is designed and built to deliver superior
performance and reliability without
compromise to quality, comfort, safety, or
durability. Shindaiwa high performance
engines represent the leading edge of
2-cycle engine technology, and deliver
exceptionally high power at remarkably low
displacement and weight. As a professional
owner/operator, you’ll soon discover why
Shindaiwa is simply in a class by itself.
Throughout this manual are special “atten-
tion statements”.
Attention Statements
WARNING!
A statement preceded by the
triangular attention symbol and the
word “WARNING” contains informa-
tion that should be acted upon to
prevent serious bodily injury.
CAUTION!
A statement preceded by the word
“CAUTION” contains information
that should be acted upon to prevent
mechanical damage.
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses
special significance.
NOTE:
A statement preceded by the word “NOTE”
contains information that is handy to know
and may make your job easier.
IMPORTANT!
The procedures described in this manual are intended to help you get the most from your unit as well as to protect you and others from
harm. These procedures are guidelines for safe operation under most conditions, and are not intended to replace any safety rules and/or
laws that may be in force in your area. If you have questions regarding your power tool, or if you do not understand something in this
manual, your Shindaiwa dealer will be glad to assist you. You may also contact Shindaiwa at the address printed on the back of this Manual.
Shindaiwa Inc. reserves the right to make
changes to products without prior notice,
and without obligation to make alterations
to units previously manufactured.
IMPORTANT!
The information contained in these
instructions describes units available at
the time of publication.
Safety and Operation Information Labels
Contents PAGE PAGE
PAGE
Introduction................................................2
Attention Statements .................................2
Safety and Operation Information Labels ....2
Safety Precautions......................................3
Safety Labels .....................................................5
Unit Description.........................................6
Specifications..............................................6
Assembly.....................................................7
Mixing fuel..................................................8
Filling the fuel tank....................................8
Starting the engine ....................................9
Stopping the Engine ................................10
Operation ..................................................11
Inspection and Maintenance...................13
Long Term Storage..................................17
Troubleshooting Guide ...........................18
Emission Warranty ..................................19
2
50:1 Ratio of Fuel/Oil Mixture
Fuel Filler Opening
BE AWARE OF THROWN
OBJECTS! Choke
On-Off Switch
Wheel Rotating Direction
Max Spindle Speed/Rated Spindle Speed
Rated Spindle Speed min-1
Max Spindle speed min-1
No Fire Allowed
Read and follow this operator's
manual. Failure to do so could result
in serious injury.
Always wear an ear muffler, a
dustproof mask, goggles, and a
helmet when operating this machine.
BE AWARE OF KICKBACK!
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.
WARNING!
The engine exhaust from this product
contains chemicals known to the State of
California to cause cancer, birth defects
or other reproductive harm.

3
Using this cut-off saw, or any other
high-speed power tool, can be
hazardous. As a result, you must
employ special safety precautions to
reduce the risk of injury or re.
Children and people who do not
understand this manual must not use
this unit.
Never allow other people or animals
to be near the unit when starting or
operating.
Never touch a rotating cut-off wheel.
Operate the unit only in a well
ventilated area.
Never operate the unit in a closed
area such as a room, warehouse or
tunnel. Running the unit in a closed
area may cause serious illness or
even death due to exhaust gas.
Never allow any people or animals
near exhaust gas.
Never inhale exhaust gas.
Never make unauthorized
modications or alterations to any of
the components of the unit, and never
operate the unit without the wheel
guard or mufer.
This unit is designed for one-man
operation and must be operated by
only one person.
Never operate the unit when you
are tired or under inuence of any
substance that could impair vision,
dexterity or judgement.
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When operating the unit, always
wear snug-tting clothing, safety
gloves, safety non-skid footwear,
hearing protection, a dust-proof
mask, a helmet and goggles. Never
wear oppy clothing, shorts, sandals
or accessories that could become
entangled.
A rst-time operator should obtain
practical instruction from a dealer or an
experienced user before using the unit.
To minimize the risk of sparks igniting
clothing while operating the unit, wear
clothing made of leather, wool, tightly-
woven cotton, or cotton treated with
ame-retardant.
Never use any cut-off wheel that is
not recommended in this manual.
Do not start or operate the unit unless
you have a clear work area and
secure footing.
Do not operate the machine for more
than two hours a day in total. Do not
operate it for more than ten minutes
continuously. Due to vibration,
excessive operation may cause you
white nger disease.
Never smoke or use re near the unit
or its fuel.
Since the mufer and exhaust gas
become very hot, make sure there
are no ammable substances near
the unit.
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Never run the unit if you discover a
fuel leak.
Make sure all the components are
in place and the bolts are securely
fastened.
Make sure the cut-off wheel is
securely fastened and is not
damaged. Never use a cut-off wheel
with cracks, distortion, or one that is
unbalanced.
Make sure the belt tension is properly
adjusted and the wheel guard, belt
guard and clutch cover are securely
assembled.
Always inspect the front handle, rear
handle and wheel guard before use,
and never use the unit if the parts are
damaged.
Before cutting into a material,
familiarize yourself with the risks
associated with dust, fumes, or
mists that may be generated during
operation. Make sure you provide
adequate protection against harmful
emissions. A high-performance
respirator and/or water attachment
may be required.
Do not use the cut-off saw to cut
or disturb asbestos or products
containing or wrapped in asbestos.
If you believe you might be cutting
asbestos, contact your supervisor.
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Safety Precautions
WARNING!
Before Operation
Mixing fuel and engine fueling must
be done outside, and where no other
combustibles are nearby.
Open the fuel cap slowly to release
any possible build-up of pressure.
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Never refuel when the unit is hot.
Allow to cool before refueling.
Never fuel when the engine is
running.
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After fueling, wipe all spilled fuel.
Cutting metal may cause sparks from
the cut-off wheel and may ignite spilled
fuel which could result in serious injury.
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WARNING!
Fueling the Unit

Always be aware of, and prepared for, kickback.
4
When carrying the unit, make
sure engine and cut-off wheel are
completely stopped.
Carry the unit with the front handle
and with cut-off wheel facing
rearward.
When storing the unit, make sure
the cut-off wheel is removed and
the unit is placed on a secure, dry
place.
Keep the unit away from children.
When storing the unit for more than
a few days, empty the fuel tank
completely.
Store gasoline and mixed fuel in
a closed, dry place and where
combustibles are not nearby.
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Safety Precautions (continued)
Figure 1
Start the engine at least 3 meters
from a fueling location.
Start the engine at least 3 meters
away from a fueling location.
When starting the engine, make sure
the cut-off wheel does not touch any
object or ground. As soon as the
engine starts, the cut-off wheel may
begin to rotate.
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Start the engine according to the
instructions in this manual. Start the
engine on a rm, stable surface. Make
sure the area is clear of bystanders.
Starting the engine must be done by
only one person without any assistance.
The cut-off wheel should not rotate at
engine idle. If it does, reduce idle speed.
Never leave the unit running
unattended.
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WARNING!
Starting the Engine
Kickback may force the cut-off
wheel up and back toward the
operator lightning-fast.
Kickback can occur whenever
the upper half of the cut-off wheel
touches an object. Never cut an
object using the upper half of the
cut-off wheel.
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WARNING!
Kickback
Figure 2
Always operate below chest level.
Figure 3
The cut-off wheel coasts for a
while after the engine is stopped.
Keep hold of the unit rmly until
the wheel stops completely and
then place it on the ground.
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Before performing any inspection,
maintenance, repair or cleaning
of the unit, make sure engine
and cut-off wheel are completely
stopped and cooled down.
Inspection and maintenance
operations should be done in a
well ventilated location and where
there are no combustibles nearby.
When replacing parts, always use
Shindaiwa genuine parts. Using
non-Shindaiwa genuine parts may
result in serious injury.
Inspection and maintenance
operations not mentioned in this
manual should be performed by an
authorized Shindaiwa dealer.
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WARNING!
Stopping the Engine
WARNING!
Inspection and Maintenance
WARNING!
Transport and Storage
WARNING!
This unit must be operated below
chest level. Operating above chest
level may result in serious injury.
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EC7500.1
Noperformanceguaranteewithout�
usinggenuineShindaiwablades�
No-loadrevolutionspeed:4180min
-1
(rpm)�
Usereinforcedabrasivebladeswith�
maximumuseableperimetervelocityof:�
15,749ft/min.(4800m/min.)
USEONLYGENUINE�
SHINDAIWABLADES
EC7500
Max.bladediameter:12"(305mm)�
Max.bladethickness:0.157"(4.0mm)�
Standardarbor:0.86"(22mm),�
othersavailable;seeowner’smanual
EC7500.18
BELT
DIRECTION
Wheel Guard
Lock Knob
Lock
DECOMPRESSION
VALVE
PRIMER
GASOLINE : OIL
50 : 1 No Fire
Allowed
EC7500 EC7600
4180 min-1
STOP
Free
Rated spindle speed
3800 min-1
Max spindle
speed
3320 min-1
Rated spindle speed
3650 min-1
Max spindle
speed
IMPORTANT!
Make sure all safety and operation
information labels are undamaged
and readable. Immediately replace
damaged or missing safety and
operation information labels, which
are available from your authorized
Shindaiwa dealer.
5
Safety Precautions (continued)
The unit must be held rmly with both
hands, one hand on the rear handle,
the other on the front handle. Never
hold onto any other part of the unit.
When cutting vertically, the unit
should be positioned horizontally
or with the wheel side tilted slightly
down. When cutting horizontally, the
recoil starter-side should face up.
Never impact or apply pressure to
the sides of the cut-off wheel for any
reason.
Maintain rm and stable footing
during operation. Do not overreach.
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When working in a group, make sure
operators are least 10 meters away
from each other.
If you drop the unit or strike it against
a hard surface, stop the engine
immediately and inspect for damage.
If you discover damage, have it
repaired before you return the unit to
service.
Check the fuel ller cap regularly
during operation to make sure it
remains securely tightened.
If you discover fuel leakage,
immediately stop the engine.
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Cutting may cause sparks from the
cut-off wheel. Make sure there is no
ammable substances nearby.
Never cut live electrical wires. The
shock you might receive could be
very serious. Do not touch hot parts
such as the mufer or cylinder. You
could burn yourself severely.
The cut-off wheel gets hot while cutting.
Never touch the wheel immediately after
cutting. You could burn yourself severely.
While the engine is running, never touch
high voltage parts such as the spark
plug cap and plug cord.
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WARNING!
Operation
Safety Labels
Figure 4