Ryobi ECS12519 Instructions for use

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ECS12519
CIRCULAR SAW
OWNER’S OPERATION MANUAL
Double
Insulated
THANK YOU FOR BUYING A RYOBI CIRCULAR SAW
Your new circular saw has been engineered and manufactured to Ryobi’s high standard for
dependability, ease of operation and operator safety. Properly cared for, it will give you years of
rugged, trouble free performance.
Pay close attention to the Rules for Safe Operation, Warnings and Cautions.
If you use your circular saw properly and only for what it is intended, you will enjoy years of safe,
reliable service.
Thank You again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE
CAUTION: Carefully read through thisentire owner’smanual before using
your circular saw.
ECS12519-Eng.qxd 10/10/04 2:15 PM Page A1

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1
IMPORTANT
READ THESE SAFETY INSTRUCTIONS.
Before using the CIRCULAR SAW, please read the
manual carefully, especially the safety instructions.
Keep this manual for future reference.
GENERAL SAFETY RULES
WARNING! Read all instructions. Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury. The term “Power Tool” in all of the
warnings listed below refers to your mains operated
(corded) power tool or battery operated (cordless) power
tool.
SAFETY ALERT SYMBOL. Indicates caution
or warning. May be used in conjunction with
other symbols or pictures.
WARNING: Failure to obey a safety warning can
result in serious injury to yourself or to others.
Always follow the safety precautions to reduce
the risk of fire, electric shock and personal injury.
WARNING: Do not attempt to operate this tool
until you have read thoroughly and understood
completely safety rules, etc. contained in
this manual. Failure to comply can result in
accidents involving fire, electric shock or serious
personal injury. Save owners manual and review
frequently for continuing safe operation and
instructing others who may use this tool.
The operation of any tool can result in
foreign objects being thrown into your
eyes, which can result in severe eye
damage. Before beginning power tool
operation, always wear safety goggles
or safety glasses with side shields and a full face shield
when needed. We recommend Wide Vision Safety Mask
for use over eyeglasses or standard safety glasses with
side shields.
WORK AREA
■Keep work area clean and well lit. Cluttered and
dark areas invite accidents.
■Do not operate power toolsin explosive
atmospheres, such asin the presence of
flammable liquids, gasesor dust. Power tools
create sparks which may ignite the dust or fumes.
■Keep children and bystandersaway while
operating a power tool. Distractions can cause you
to lose control.
ELECTRICAL SAFETY
■Power tool plugsmust match the outlet. Never
modify the plug in any way. Do not use any
adapter plugswith earthed (grounded) power
tools.Unmodified plugs and matching outlets will
reduce risk of electric shock.
■Avoid body contact with earthed or grounded
surfacessuch aspipes, radiators, rangesand
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded.
■Do not expose power toolsto rain or wet
conditions. Water entering a power tool will increase
the risk of electric shock.
■Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool. Keep
cord away from heat, oil, sharp edges or moving
parts. Damaged or entangled cords increase the risk
of electric shock.
■When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of
electric shock.
PERSONAL SAFETY
■Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under the
influence of drugs, alcohol or medication. Amoment
of inattention while operating power tools may result
in serious personal injury.
■Use safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid safety
shoes, hard hat or hearing protection used for
appropriate conditions will reduce personal injuries.
■Avoid accidental starting. Ensure the switch is in
the off position before plugging in. Carrying power
tools with your finger on the switch or plugging in
power tools that have the switch on invites accidents.
■Remove any adjusting key or wrench before
turning the power tool on. Awrench or a key left
attached to a rotating part of the power tool may
result in personal injury.
■Do not overreach. Keep proper footing and
balance at all times.This enables better control of
the power tool in unexpected situations.
■Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewellery or long
hair can be caught in moving parts.
■If devicesare provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of these
devices can reduce dust related hazards.
ECS12519-Eng.qxd 10/10/04 2:15 PM Page 1

2
GENERAL SAFETY RULES
POWER TOOL USE AND CARE
■Do not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
■Do not use the power tool if the switch doesnot
turn it on and off. Any power tool that can not be
controlled with the switch is dangerous and must be
repaired.
■Disconnect the plug from the power source
before making any adjustments, changing
accessoriesor storing power tools.Such
preventive safety measures reduce the risk of starting
the power tool accidentally.
■Store idle power toolsout of the reach of children
and do not allow personsunfamiliar with the
power tool or these instructionsto operate the
power tool. Power tools are dangerous in the hands
of untrained users.
■Maintain power tools.Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tools
operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
■Keep cutting toolssharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
■Use the power tool, accessoriesand tool bitsetc.,
in accordance with these instructionsand in the
manner intended for the particular type of power
tool, taking into account the working conditions
and the work to be performed. Use of the power
tool for operations different from intended could result
in a hazardous situation.
SERVICE
■Have your power tool serviced by a qualified
repair person using only identical replacement
parts.This will ensure that the safety of the power
tool is maintained.
■Check damaged parts.Before further use of the
tool, a guard or other part that is damaged should be
carefully checked to determine that it will operate
properly and perform its intended function. Check for
alignment of moving parts, free running of moving
parts, breakage of parts, mounting and any other part
that is damaged should be properly repaired or
replaced by an authorized service centre unless
otherwise indicated in this instruction manual.
Have defective switches replaced by an authorized
service centre. Do not use the tool if the switch does
not turn it on and off.
PARTICULAR REQUIREMENTS FOR CIRCULAR
SAWS
Not to use any abrasive wheels
Ensure that the riving knife is adjusted so that the
distance between the riving knife and the rim of the
blade is not more than 5mm, and the rim of the blade
does not extend more than 5mm beymond the lowest
edge of the riving knife.
Safety instructionsfor all saws
DANGER:
■Keep handsaway from cutting area and the blade.
Keep your second hand on auxiliary handle or
motor housing. If both hands are holding the saw, they
cannot be cut by the blade.
■Do not reach underneath the workpiece. The guard
cannot protect you from the blade below the workpiece.
■Adjust the cutting depth to the thickness of the
workpiece. Less than a full tooth of the blade teeth
should be visible below the workpiece.
■Never hold piece being cut in your handsor across
your leg. Secure the workpiece to a stable platform.
It is important to support the work properly to minimize
body exposure, blade binding or loss of control.
■Hold power tool by insulated gripping surfaces
when performing an operation where the cutting
tool may contact hidden wiring or itsown cord.
Contact with a "live" wire will also make exposed metal
parts of the power tool "live" and shock the operator.
■When ripping alwaysuse a rip fence or straight
edge guide. This improves the accuracy of cut and
reduces the chance of blade binding.
■Alwaysuse bladeswith correct size and shape
(diamond versusround) of arbour holes.Blades that
do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.
■Never use damaged or incorrect blade washersor
bolt. The blade washers and bolt were specially
designed for your saw, for optimum performance and
safety of operation.
Further safety instructionsfor all saws
Causesand operator prevention of kickback:
■Kickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to
lift up and out of the workpiece toward the operator;
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3
PARTICULAR REQUIREMENTS FOR CIRCULAR
SAWS
■When the blade is pinched or bound tightly by the kerf
closing down, the blade stalls and the motor reaction
drives the unit rapidly back toward the operator;
■If the blade becomes twisted or misaligned in the cut,
the teeth at the back edge of the blade can dig into
the top surface of the wood causing the blade to
climb out of the kerf and jump back toward the
operator.
Kickback is the result of saw misuse and/or incorrect
operating procedures or conditions and can be avoided
by taking proper precautions as given below.
■Maintain a firm grip with both handson the saw
and position your armsto resist kickback forces.
Position your body to either side of the blade, but
not in line with the blade. Kickback could cause the
saw to jump backwards, but kickback forces can be
controlled by the operator, if proper precautions are
taken.
■When blade isbinding or when interrupting a cut
for any reason, release the trigger and hold the
saw motionless in the material until the blade
comesto a complete stop. Never attempt to
remove the saw from the work or pull the saw
backward while the blade isin motion or kickback
may occur. Investigate and take corrective actions to
eliminate the cause of blade binding.
■When restarting a saw in the workpiece, centre
the saw blade in the kerf and check that saw teeth
are not engaged into the material. If saw blade is
binding, it may walk up or kickback from the
workpiece as the saw is restarted.
■Support large panelsto minimise the risk of blade
pinching and kickback. Large panels tend to sag
under their own weight. Supports must be placed
under the panel on both sides, near the line of cut
and near the edge of the panel.
■Do not use dull or damaged blades.Unsharpened
or improperly set blades produce narrow kerf causing
excessive friction, blade binding and kickback.
■Blade depth and bevel adjusting locking levers
must be tight and secure before making a cut. If
blade adjustment shifts while cutting, it may cause
binding and kickback.
■Use extra caution when making a "plunge cut"
into existing wallsor other blind areas.The
protruding blade may cut objects that can cause
kickback.
Safety instructionsfor sawswith lower guard
■Check lower guard for proper closing before each
use. Do not operate the saw if lower guard does
not move freely and close instantly. Never clamp
or tie the lower guard into the open position. If
saw is accidentally dropped, lower guard may be
bent. Raise the lower guard with the retracting handle
and make sure it moves freely and does not touch the
blade or any other part, in all angles and depths of
cut.
■Check the operation of the lower guard spring. If
the guard and the spring are not operating
properly, they must be serviced before use. Lower
guard may operate sluggishly due to damaged parts,
gummy deposits or a build-up debris.
■Lower guard should be retracted manually only
for special cutssuch as"plunge cuts" and
"compound cuts." Raise lower guard by
retracting handle and assoon asthe blade enters
the material, the lower guard must be released.
For all other sawing, the lower guard should operate
automatically.
■Alwaysobserve that the lower guard iscovering
the blade before placing saw down on bench or
floor. An unprotected, coasting blade will cause the
saw to walk backwards, cutting whatever is in its
path. Be aware of the time it takes for the blade to
stop after switch is released.
Additional safety instructionsfor all sawswith riving
knife
■Use the appropriate riving knife for the blade
being used. For the riving knife to work, it must be
thicker than the body of the blade but thinner than the
tooth set of the blade.
■Adjust the riving knife asdescribed in this
instruction manual. Incorrect spacing, positioning
and alignment can make the riving knife ineffective in
preventing kickback.
■Alwaysuse the riving knife except when plunge
cutting. Riving knife must be replaced after plunge
cutting. Riving knife causes interference during
plunge cutting and can create kickback.
■For the riving knife to work, it must be engaged in
the workpiece. The riving knife is ineffective in
preventing kickback during short cuts.
■Do not operate the saw if riving knife isbent. Even
a light interference can slow the closing rate of a
guard.
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4
DESCRIPTION
1. Spindle lock button 12. Depth lock knob
2. Hex-head bolt 13. Base plate
3. Spanner 14. Depth of cut
4. Outer blade washer 15. Depth scale
5. Lower guard 16. Bevel adjustment knob
6. Lower guard lever 17. Bevel scale
7. Upper guard 18. Trigger switch
8. Blade 19. Safety button
9. Inner blade washer 20. Line guide
10. Dust port 21. Depth adjustment lug
11. Riving knife 22. Livetool IndicatorTM
SPECIFICATION
Input 1,250 W
No load speed 4,500 min-1
Bore size 16 mm
Blade size 190 mm
Cutting capacity
at 0066 mm
at 45038 mm
Bevel scale 0 - 450
Cord length 4 m
INSTRUCTIONS FOR SAFE HANDLING
The maximum permissible system impedance: Zmax for
ECS12519 is 0.245 Zref.
If in doubt, please verify with your local energy-utility that
the AC outlets in your area do not exceed the above
values.
STANDARD ACCESSORIES
Saw blade, Parallel fence, Spanner.
APPLICATION
Sawing wood.
NOISE BUILD-UP
Noise (sound pressure level) in the workplace can
exceed 85 dB. In this case, sound insulation and
hearing protection measures must be taken by the
operator.
ASSEMBLY INSTRUCTIONS
Be sure to disconnect the tool from the power
supply before attaching or removing the saw
blade. Be sure that the teeth of the saw blade are
pointing upward at the front of the tool.
ATTACHING AND REMOVING THE BLADE
(FIGURES 2, 3, 4, AND 5)
ATTACHING THE BLADE
1. Pressing the spindle lock button (1), turn the hex-head
bolt (2) with the spanner (3) until the spindle locks.
(Fig.2)
2. Loosen the hex-head bolt by turning the spanner
anticlockwise while pressing the spindle lock button.
(Fig.2)
3. Remove the hex-head bolt and the outer blade washer
(4). (Fig. 2)
4. Retract the lower guard (5) back with the lower guard
lever (6) as far as possible under the upper guard (7).
(Fig. 3)
5. Then, attach the saw blade (8) against the inner blade
washer (9) on the spindle. Then fit the outer blade
washer and the hex-head bolt. (Fig. 3 and 4)
6. Press the spindle lock button again, tighten the hex-
head bolt by turning the spanner clockwise while
pressing the spindle lock button. (Fig. 5)
7. After tightening the hex-head bolt, release the spindle
lock button.
REMOVING THE BLADE
1. Pressing the spindle lock button, turn the hex-head
bolt with the spanner until the spindle locks.
2. Loosen the hex-head bolt by turning the spanner
anticlockwise while pressing the spindle lock button.
3. Remove the hex-head bolt and the outer blade
washer.
4. Retract the lower guard back as far as possible under
the upper guard, then remove the saw blade.
ADJUSTING THE RIVING KNIFE (FIG. 6)
WARNING
Do not use saw blades the disk of which is
thicker or the set of which is smaller than the
thickness of the riving knife.
ECS12519-Eng.qxd 10/15/04 2:59 PM Page 4

OPERATION
1. Ensure that the riving knife is adjusted so that (Fig. 6):
A. The distance between the riving knife (11) and the
toothed rim of the saw blade is under 5mm.
B. The toothed rim does not extend more than 5mm
beyond the lower edge of the riving knife.
2. The riving knife should always be used except when
making a plunging cut in the middle of a workpiece.
ADJUSTING THE DEPTH OF CUT (FIG. 7A, 7B,
8, 9)
1. To adjust the depth of cut, loosen the depth
adjustment knob (12). (Fig. 7A)
2. Slide the base plate (13) to the desired depth using
the depth adjustment lug (21) and retighten the knob
securely. (Fig. 7B)
3. The depth of cut (14) can be determined by the depth
scale (15) or by measuring the distance by which the
blade protrudes from the base plate. (Fig. 8and 9)
ADJUSTING THE CUTTING ANGLE (FIG. 10A,
10B)
1. The cutting angle may be set to any position between
0° and 45°. (Fig. 10A)
2. Loosen the bevel adjustment knob (16) at the front of
the tool and move the base plate to the desired angle
using the bevel scale (17). (Fig.10B)
3. Once the angle has been set, be sure to retighten the
bevel adjustment knob firmly.
TRIGGER SWITCH (FIG. 11)
This tool is started and stopped by squeezing and
releasing the trigger switch (18). To prevent the tool
from being started accidentally, the trigger can only
be operated if the safety button (19) is depressed
first. The safety button can be depressed with the
thumb leaving the other fingers free to squeeze the
trigger switch. It is not necessary to maintain pressure
on the safety button once the trigger switch has been
depressed.
OPERATING INSTRUCTIONS (FIG. 12)
DANGER!
Keep hands away from the cutting area when
operating the tool. Keep the cord away from the
cutting area and position it so that it will not get
caught on the workpiece during the cutting
operation.
When cutting, use steady and even pressure (DO
NOT FORCE) in order to obtain a uniform cut. Cut at
a speed suited to the workpiece. (Cut slowly if the
workpiece is hard.) Inspect the saw blade frequently
and replace or sharpen it if dull to avoid overloading
the motor.
CUTTING POSITION (FIG. 13A, 13B)
When cutting a workpiece at 0°, use point "A" of the
base plate line guide (20) and move the saw along
the pencilled line you have drawn. When cutting at
45°, use point "B". This line guide shows an
approximate line of cut. Make a sample cut in scrap
lumber to determine the actual line of cut.
CAUTION!
When ripping, the rip fence should only touch the
workpiece slightly. Do not force.
MAINTENANCE
After use, check the tool to make sure that it is in top
condition.
We recommended that you take this tool to an
Authorised Ryobi Service Centre for a thorough
cleaning and ubrication at least once a year.
Do not make any adjustments while the motor is
running.
Always disconnect the power cord from the socket
before changing removable or expendable parts
(blade, bit, sandpaper, etc.), lubricating or working on
the saw. Keep handles clean and free from oil and
grease.
If the supply cord is damaged, it shall be replaced by
the manufacturer or its service centre or similar
qualified person in order to avoid a hazard.
WARNING
For greater safety and reliability, all repairs
should be performed by an Authorised Ryobi
Service Centre.
LIVETOOL INDICATORTM
This tool features a livetool IndicatorTM (22) which
illuminates as soon as the tool is connected to the supply.
This warns the user that the tool is connected and will
operate when the switch is pressed.
5
ECS12519-Eng.qxd 10/10/04 2:16 PM Page 5

ENVIRONMENTAL PROTECTION
Do not dispose of in general household
waste. Instead, dispose in an environmentally
friendly way. Contact your local recycling
centre or council for advise. Ryobi takes the
care of the environment very seriously.
6
ECS12519-Eng.qxd 10/10/04 2:16 PM Page 6

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ECS12519-Eng.qxd 10/10/04 2:16 PM Page 7