OPERATOR'S MANUAL
7-1/4 in. (184 mm) Circular Saw
Model CSB1308
DOUBLE INSULATED
SPECIFICATIONS:
Blade Diameter
7-1/4 in. (184 mm)
5/8 in. (16 mm)
Blade Arbor
Cutting Depth at 0°
Cutting Depth at 45°
Cutting Depth at 51.5°
Rating
2-3/8 in. (60 mm)
1-13/16 in. (46 mm)
1-5/8 in. (41 mm)
120 volts, 60 Hz, AC
13 Amperes
Input
No Load Speed
Net Weight
5,000 RPM
11.5 lbs.
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.
CAUTION: Carefully read through this entire operator's manual before using your new saw.
Pay close attention to the Rules for Safe Operation, Warnings, and Cautions. If you use your 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
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GENERAL SAFETY RULES
Personal Safety (continued)
the tool accidentally.
I Store idle tools out of the reach of children
and other untrained persons. Tools are danger-
ous in the hands of untrained users.
I Maintain tools with care. Keep cutting tools
sharp and clean. Properly maintained tools with
sharp cutting edges are less likely to bind and are
easier to control.
I Remove adjusting keys or wrenches before
turning the tool on. A wrench or a key that is left
attached to a rotating part of the tool may result in
personal injury.
I Do not overreach. Keep proper footing and
balance at all times. Proper footing and balance
enables better control of the tool in unexpected
situations.
I Check for misalignment or binding of moving
parts, breakage of parts, and any other condi-
tion that may affect the tool's operation. If
damaged, have the tool serviced before using.
Many accidents are caused by poorly maintained
tools.
I Use safety equipment. Always wear eye pro-
tection. Dust mask, nonskid safety shoes, hard
hat, or hearing protection must be used for
appropriate conditions.
Tool Use and Care
I Use only accessories that are recommended
by the manufacturer for your model. Accesso-
ries that may be suitable for one tool, may be-
come hazardous when used on another tool.
I Use clamps or another practical way to secure
and support the workpiece to a stable plat-
form. Holding the work by hand or against your
body is unstable and may lead to loss of control.
Service
I Do not force tool. Use the correct tool for your
application. The correct tool will do the job better
and safer at the rate for which it is designed.
I Tool service must be performed only by
qualified repair personnel. Service or mainte-
nance performed by unqualified personnel could
result in a risk of injury.
I Do not use tool if switch does not turn it on or
off. Any tool that cannot be controlled with the
switch is dangerous and must be repaired.
I When servicing a tool, use only identical
replacement parts. Follow instructions in
Maintenance section of this manual. Use of
unauthorized parts or failure to follow Mainte-
nance Instructions may create a risk of electric
shock or injury.
I Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing the tool. Such preven-
tive safety measures reduce the risk of starting
SPECIFIC SAFETY RULES
guard may be bent. Raise the lower guard with the
retracting handle. Make sure it moves freely and
does not touch the blade or any other part, in all
angles and depths of cut.
Specific Safety Rules for Circular Saws
I DANGER! Keep hands away from cutting area
and blade. Keep your second hand on the
auxiliary handle or motor housing. If both hands
are holding the saw, they cannot be cut by the blade.
I Check the operation and condition of the lower
guard spring. If the guard and the spring are not
operatingproperly,theymustbeservicedbefore
use. Lower guard may operate sluggishly due to
damaged parts, gummy deposits, or a buildup of
debris.
I Keep your body positioned to either side of the
saw blade, but not in line with the saw blade.
Kickback could cause the saw to jump backwards.
(See "Causes and Operator Prevention of
Kickback.")
I Lower guard should be retracted manually only
for special cuts, such as "Pocket Cuts" and
"Compound Cuts." Raise lower guard by
retracting handle. As soon as blade enters the
material, lower guard must be released. For all
other sawing, the lower guard should operate
automatically.
I Do not reach underneath the work. The guard
cannot protect you from the blade below the work.
I Check lower guard for proper closing before
each use. Do not operate 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
Page 3
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SPECIFIC SAFETY RULES
I Kickbackistheresultoftoolmisuseand/orincorrect
Specific Safety Rules for Circular Saws
(continued)
operating procedures or conditions and can be
avoided by taking proper precautions, as given
below:
I Alwaysobservethatthelowerguardiscovering
the blade before placing saw down on bench or
floor. An unprotected, coasting blade will cause
thesawtowalkbackwards,cuttingwhateverisinits
path. Be aware of the time it takes for the blade to
stop after switch is released.
I Maintain a firm grip with both hands on the saw
and position your body and arm to allow you to
resist KICKBACK forces. KICKBACK forces can
be controlled by the operator, if proper precautions
are taken.
I NEVER hold piece being cut in your hands or
across your leg. It is important to support the work
properlytominimizebodyexposure, bladebinding,
or loss of control.
I When blade is binding, or when interrupting a
cut for any reason, release the trigger and hold
the saw motionless in the material until the
blade comes to a complete stop. Never attempt
to remove the saw from the work or pull the saw
backward while the blade is in motion, or
KICKBACK may occur. Investigate and take
corrective actions to eliminate the cause of blade
binding.
I Hold tool by insulated gripping surface when
performing an operation where the cutting tool
may contact hidden wiring or its own cord.
Contact with a "live" wire will also make exposed
metalparts of thetool"live" andshock theoperator.
I When ripping, always use a rip fence or straight
edge guide. This improves the accuracy of the cut
and reduces the chance for blade binding.
I When restarting a saw in the workpiece, center
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.
I Always use blades with correct size and shape
(diamond vs. round) arbor holes. Blades that do
not match the mounting hardware of the saw will
run eccentrically, causing loss of control.
I Support large panels to minimize 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.
I Never use damaged or incorrect blade washers
orbolts.Thebladewashersandboltswerespecially
designed for your saw for optimum performance
and safety of operation.
I Do not use dull or damaged blade. Unsharpened
or improperly set blades produce narrow kerf which
causes excessive friction, blade binding and
KICKBACK.
Causes and Operator Prevention of Kickback
I 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.
I Blade depth and bevel adjusting locking levers
must be tight and secure before making cut. If
blade adjustment shifts while cutting, it may cause
binding and KICKBACK.
I 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.
I Use extra caution when making a "Pocket Cut"
into existing walls or other blind areas. The
protruding blade may cut objects that can cause
KICKBACK.
I 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.
Page 4
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Additional Rules for Safe Operation
tion. Following this rule will reduce the risk of
electric shock or fire.
I Know your power tool. Read operator's manual
carefully. Learnitsapplicationsandlimitations,
as well as the specific potential hazards related
to this tool. Following this rule will reduce the risk
of electric shock, fire or serious injury.
I Always wear safety glasses. Everyday eye-
glasseshaveonlyimpact-resistantlenses;they
are NOT safety glasses. Following this rule will
reduce the risk of serious personal injury.
I Protect your lungs. Wear a face or dust mask if
the operation is dusty. Following this rule will
reduce the risk of serious personal injury.
I Protect your hearing. Wear hearing protection
during extended periods of operation. Following
this rule will reduce the risk of serious personal
injury.
I Don't abuse cord. Never carry the tool by the
cord or yank it to disconnect it from the recep-
tacle. Keep cord away from heat, oil, and sharp
edges. Following this rule will reduce the risk of
electric shock or fire.
I Make sure your extension cord is in good con-
dition. When using an extension cord, be sure
to use one heavy enough to carry the current
yourproductwilldraw.Awiregagesize(A.W.G.)
of at least 14 is recommended for an extension
cord 25 feet or less in length. A cord exceeding
50 feet is not recommended. If in doubt, use the
next heavier gage. The smaller the gage num-
ber, the heavier the cord. An undersized cord will
cause a drop in line voltage resulting in loss of
power and overheating.
I Check damaged parts. Before further use of the
tool,aguardorotherpartthatisdamagedshould
be carefully checked to determine that it will
operate properly and perform its intended func-
tion. Check for alignment of moving parts, bind-
ing of moving parts, breakage of parts, mount-
ing, and any other conditions that may affect its
operation. A guard or other part that is damaged
should be properly repaired or replaced by an
authorized service center. Following this rule will
reduce the risk of electric shock, fire or serious
injury.
WARNING:
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains
chemicals known 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.
I Inspecttoolcordsperiodically and,ifdamaged,
have repaired at your nearest authorized ser-
vice center. Constantly stay aware of cord loca-
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the
explanations with them, deserve your careful attention and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident
prevention measures.
SYMBOL MEANING
SAFETY ALERT SYMBOL:
Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs.
DANGER: Failure to obey a safety warning will 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: 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.
CAUTION: Failure to obey a safety warning may result in property damage or personal injury to yourself
or to others. Always follow the safety precautions to reduce the risk of fire, electric shock, and personal
injury.
NOTE:
Advises you of information or instructions vital to the operation or maintenance of the equipment.
Page 5
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FEATURES
KNOW YOUR CIRCULAR SAW
See Figure 1.
APPLICATIONS
(Use only for the purpose listed below)
Before attempting to use your saw, familiarize yourself
with all operating features and safety requirements.
I Cutting all types of wood products (lumber, plywood,
paneling).
ELECTRICAL CONNECTION
WARNING:
If any parts are missing, do not operate your tool until the
missing parts are replaced. Failure to do so could result
in possible serious personal injury.
Your circular saw has a precision-built electric motor. It
should be connected to a power supply that is 120 volts,
60 Hz only. Do not operate this tool on direct current (DC). A
substantial voltage drop will cause a loss of power and the
motor will overheat. If your saw does not operate when
plugged into an outlet, double-check the power supply.
SWITCH
Your saw is equipped with a pre-travel safety switch which
reduces the possibility of accidental starting. When you
depress the switch, you will notice the saw will not start until
you reach the pre-travel position. You must depress the
switch fully to activate the saw.
WARNING:
Do not allow familiarity with your saw to make you
careless. Remember that a careless fraction of a second
is sufficient to inflict severe injury.
DEPTH OF
CUT ADJUSTMENT
(DEPTH ADJUSTMENT KNOB)
UPPER BLADE
SPINDLE LOCK BUTTON
GUARD
TRIGGER
SWITCH
VIEWING
WINDOW
LOWER BLADE
GUARD HANDLE
BASE
ASSEMBLY
4 5
BLADE WRENCH
0
BLADE
BLADE WRENCH
STORAGE AREA
BEVEL CUT ADJUSTMENT
(BEVEL ADJUSTMENT KNOB)
Fig. 1
WARNING:
The operation of any circular saw 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.
Page 6
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ASSEMBLY
I Carefully remove the saw and accessories from box.
PACKING LIST
Make sure all items listed in the Packing List are included.
Warranty Card
Carrying Case
Operator's Manual
Circular Saw
7-1/4 Blade
Wrench
I Donotdiscardthepackingmaterialuntilyouhavecarefully
inspected and satisfactorily operated saw.
I Examine all parts and accessories to make sure that no
breakage has occurred during shipping. Any damaged
part should be replaced before attempting to use the tool.
LOWER BLADE
GUARD HANDLE
WARNING:
Your saw should never be connected to a power supply
when you are assembling parts, making adjustments,
assembling or removing blades, cleaning, or when not in
use. Disconnecting your saw will prevent accidental
starting that could cause serious personal injury.
BLADE
OUTER BLADE
WASHER
("D" WASHER)
BLADE
SCREW
WARNING:
7-1/4 in. (184 mm) blade is the maximum blade capacity
of your saw. Also, never use a blade that is too thick to
allow outer blade washer to engage with the flat on the
spindle. Larger blades will come in contact with the blade
guards, whilethickerbladeswillpreventbladescrewfrom
securingbladeonspindle. Eitherofthesesituationscould
result in a serious accident.
SPINDLE
INNER
FLANGE BUSHING
SPRING
WASHER
Fig. 2
TO ASSEMBLE OR REMOVE BLADE
See Figure 2.
I Unplug your saw.
WARNING:
Failure to unplug your saw could result in accidental
starting causing possible serious personal injury.
I Depress spindle lock button to secure blade when turning
blade screw. See Figure 3.
I Remove spring washer and outer blade washer ("D"
washer). NOTE: BLADE CAN BE REMOVED AT THIS
POINT. If you are assembling blade for the first time or
changing blade, continue to follow the steps on Page 8.
Page 7
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ASSEMBLY
I Wipe a drop of oil onto inner flange bushing and outer
SPINDLE LOCK
BUTTON
blade washer ("D" washer) where they contact blade.
WARNING:
If inner flange bushing has been removed, replace it
before placing blade on spindle. Failure to do so could
cause an accident since blade will not tighten properly.
TO
TIGHTEN
I Fit saw blade inside blade guard and onto spindle.
NOTE: The saw teeth point upward at the front of the saw
as shown in Figure 2.
I Replace "D" washer and spring washer.
NOTE: "Cupped" side of spring washer goes against "D"
washer. See Figure 2.
BLADE
SCREW
TO
LOOSEN
I Replace blade screw. Tighten blade screw securely.
NOTE: Turn blade screw clockwise to tighten.
BLADE
WRENCH
REMEMBER:Neveruseabladethatistoothicktoallowthe
"D" washer to engage with the flat on the spindle.
Fig. 3
SAW BLADES
The best of saw blades will not cut efficiently if they are not
kept clean, sharp, and properly set. Using a dull blade will
place a heavy load on your saw and increase the danger of
kickback. Keep extra blades on hand, so that sharp blades
are always available.
Gum and wood pitch hardened on blades will slow your saw
down. Remove saw blade from your saw and use gum and
pitch remover, hot water, or kerosene to remove these
accumulations. DO NOT USE GASOLINE.
BLADE GUARD SYSTEM
See Figure 3.
KICKBACK
The lower blade guard attached to your circular saw is
there for your protection and safety. It should never be
altered for any reason. If it becomes damaged, do not
operate your saw until the damage has been repaired
or replaced. Always leave guard in operating position
when using your saw.
BLADE SET TOO DEEP
Fig. 4
DANGER:
When sawing through work, lower blade guard does not
cover blade on the underside of work. Since blade is
exposed on underside of work, keep hands and fingers
away from cutting area. Any part of your body coming in
contact with moving blade will result in serious injury.
Never use saw when guard is not operating correctly.
Guard should be checked for correct operation before
each use.
NOTE: The guard is operating correctly when it moves
freely and readily returns to the closed position. If you
drop your saw, check the lower blade guard for damage
at all depth settings before reuse.
Page 8
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OPERATION
WARNING:
Do not attempt to operate this tool until you have read
thoroughly and understand completely all instructions,
safety rules, etc., contained in this manual. Failure to
comply can result in accidents involving fire, electric shock,
or serious personal injury. Save operator's manual, and
review frequently for continuing safe operation and for
instructing others who may use this tool.
KICKBACK
See Figure 4.
THE BEST GUARD AGAINST KICKBACK IS TO AVOID
DANGEROUS PRACTICES.
WRONG
Kickback occurs when the blade stalls rapidly and the saw
is driven back toward you. Blade stalling is caused by any
action which pinches the blade in the wood.
Fig. 5
DANGER:
Release switch immediately if blade binds or saw stalls.
Kickback will cause you to lose control of your saw. Loss
of control can lead to serious injury.
KICKBACK IS CAUSED BY:
I Incorrect blade depth setting. See Figure 4.
I Sawing into knots or nails in work.
I Twisting blade while making a cut.
I Making a cut with a dull, gummed up, or improperly
set blade.
CORRECT BLADE DEPTH SETTING =
BLADE EXPOSED 1/4 in. OR
LESS ON UNDERSIDE OF WORKPIECE
I Incorrectly supporting work. See Figure 5.
I Forcing a cut.
Fig. 6
I Cutting warped or wet lumber.
I Tool misuse or incorrect operating procedures.
TO LESSEN THE CHANCE OF KICKBACK:
I Always keep the correct blade depth setting–the correct
blade depth setting for all cuts should not exceed 1/4 in.
below the material to be cut. See Figure 6.
I Inspect the work for knots or nails before beginning a
cut. Never saw into a knot or nail.
I Make straight cuts. Always use a straight edge guide
when rip cutting. This helps prevent twisting the blade in
the cut.
I Always use clean, sharp, and properly set blades. Never
make cuts with dull blades.
I To avoid pinching the blade, support the work properly
before beginning a cut. The right way to support large
pieces of work are shown in Figure 7.
RIGHT
Fig. 7
I Always hold your saw firmly with both hands and keep
your body in a balanced position so as to resist the
forces of kickback should it occur.
I When making a cut, use steady, even pressure. Never
force cuts.
I Do not cut warped or wet lumber.
WHEN USING YOUR SAW, ALWAYS STAY ALERT AND
EXERCISE CONTROL. DO NOT REMOVE YOUR SAW
FROM WORKPIECE WHILE THE BLADE IS MOVING.
Page 9
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OPERATION
DEPTH OF CUT ADJUSTMENT
Always keep correct blade depth setting. The correct blade
depth setting for all cuts should not exceed 1/4 in. below the
material to be cut. More blade depth will increase the chance
of kickback and cause the cut to be rough.
TO ADJUST BLADE DEPTH
I Unplug your saw.
WARNING:
Failure to unplug your saw could result in accidental starting
causing possible serious personal injury.
I Loosen depth adjustment knob. See Figure 8.
DEPTH
ADJUSTMENT
SCALE
I Hold base flat against the work and raise or lower saw
until the required depth is reached.
I Tighten depth adjustment knob securely.
DEPTH ADJUSTMENT KNOB
STARTING A CUT
Fig. 8
KNOW THE RIGHT WAY TO USE YOUR SAW.
See Figure 10.
NEVER USE YOUR SAW AS SHOWN IN FIGURE 9.
NEVER PLACE YOUR HAND ON THE WORKPIECE
BEHIND YOUR SAW WHILE MAKING A CUT.
WARNING:
To make sawing easier and safer, always maintain proper
control of your saw. Loss of control of your saw could cause
an accident resulting in possible serious injury.
4
5
0
TO HELP MAINTAIN CONTROL:
I Always support your work near the cut.
I Support your work so the cut will be on your right.
I Clamp your work so it will not move during the cut.
Place your work with its good side down.
NOTE: The good side is the side on which appearance is
important.
Fig. 9
WRONG
Before beginning a cut, draw a guide line along the desired
line of cut. Then place the front edge of the base on that part
of your work that is solidly supported. See Figure 10.
4 5
0
RIGHT
Fig. 10
Page 10
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OPERATION
NEVER PLACE YOUR SAW ON THAT PART OF THE
WORK THAT WILL FALL OFF WHEN THE CUT IS MADE.
See Figure 11.
Keep the cord away from cutting area. ALWAYS place the
cord to prevent it from hanging up on the work while making
a cut. Utilize the cord clip to help prevent cord problems.
See Figure 12.
DANGER:
If the cord hangs up on the work during a cut, release the
switchtriggerimmediately.Unplugyoursawandreposition
the cord to prevent it from hanging up again.
WRONG
DANGER:
Fig. 11
Using your saw with a damaged cord will result in serious
injury or death. If the cord has been damaged, have it
replaced before using your saw again.
Hold your saw firmly with both hands. See Figure 13.
ALWAYS let the blade reach full speed, then guide your
saw into the work.
CORD
CLIP
WARNING:
The blade coming in contact with the work before it
reaches full speed could cause your saw to "kickback"
toward you resulting in serious injury.en pressure. F
When making a cut, use steady, even pressure. Forcing
causes rough cuts, could shorten the life of your saw, and
could cause kickback.
REMEMBER: When sawing through work, the lower blade
guard does not cover the blade, exposing it on the
underside of work. Keep your hands and fingers away
from the cutting area.
Fig. 12
After you complete your cut, release the trigger and allow
the blade to come to a complete stop. DO NOT REMOVE
YOUR SAW FROM WORKPIECE WHILE THE BLADE IS
MOVING.
CAUTION:
When lifting your saw from the work, the blade is exposed
on the underside of your saw until the lower blade
guard closes. Make sure lower blade guard is closed
before setting your saw down on work surface. Failure
to do so may result in serious personal injury.
4
5
0
RIGHT
Fig. 13
Page 11
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OPERATION
TO CROSS CUT OR RIP CUT
TOP VIEW OF SAW
See Figure 14.
VIEWING
WINDOW
When making a cross cut or rip cut, align your line of cut
with the outer blade guide notch on the saw base (as shown
in Figure 14) and view the blade through the viewing window.
Since blade thicknesses vary, always make a trial cut in
scrap material along a guideline to determine how much, if
any, the guideline must be offset to produce an accurate cut.
FRONT
OF SAW
BLADE
GUIDE
NOTCH
NOTE: The distance from the line of cut to the guideline is
the amount you should offset the guideline.
OPTIONAL RIP GUIDE (EDGE GUIDE)
See Figure 15.
Use a guide when making long or wide rip cuts with your
saw. An optional rip guide with a 5 in. scale is available, or
you can make an efficient rip guide by clamping a straight
edge to your workpiece. Secure the workpiece. Using C-
clamps, firmly clamp a straight edge to the workpiece and
guide the saw along the straight edge to achieve a straight
rip cut. Do not bind the blade in the cut. If using the optional
rip guide, see the following instructions and Figure 16.
ALIGN OUTER BLADE GUIDE NOTCH ON
SAW BASE WITH LINE OF CUT AS SHOWN
WHEN MAKING CROSS CUTS OR RIP CUTS
GUIDELINE
Fig. 14
STRAIGHT EDGE
TO ASSEMBLE RIP GUIDE
I Unplug your saw.
WARNING:
Failure to unplug your saw could result in accidental start-
4 5
0
ing causing possible serious personal injury.
I Place rip guide through holes in saw base as shown in
C-CLAMPS
Figure 16.
I Adjust rip guide to the width needed for the cut.
I Tighten edge guide screw securely.
When using a rip guide, position the face of the rip guide
firmly against the edge of workpiece. This makes for a true
cut without pinching the blade. The guiding edge of the
workpiece must be straight for your cut to be straight. Use
caution to prevent blade from binding in the cut.
WORKPIECE
ALTERNATE METHOD FOR RIP CUTTING
Fig. 15
EDGE
GUIDE SCREW
EDGE GUIDE
(RIP GUIDE)
4
5
0
PLACE RIP
GUIDE THROUGH
HOLES
Fig. 16
Page 12
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OPERATION
TO BEVEL CUT
See Figure 17 and 18.
The angle of cut of your saw may be adjusted to any desired
setting between zero and 51.5 degrees. There is a window
in the saw base to help you line up the blade with the line of
cut. See Figure 17. Align your line of cut with the inner blade
guide notch on the saw base and view through the window
when making full 45 degree bevel cuts. Since blade
thicknesses vary and different angles require different
settings, always make a trial cut in scrap material along a
guideline to determine how much you should offset the
guideline on the board to be cut.
BEVEL
ADJUSTMENT
KNOB
51.5
45
0
3
When making a bevel cut, hold your saw firmly with both
hands (as shown in Figure 18). Rest the front edge of the
base on the work. Depress the switch trigger. ALWAYS let
the blade reach full speed, then guide your saw into the
work.
5
1
0
BEVEL SCALE
VIEWING WINDOW
BEVEL
GUIDE NOTCH
WARNING:
Fig. 17
The blade coming in contact with the work before it
reaches full speed could cause saw to kickback toward
you resulting in serious injury.
After you complete your cut, release the trigger and allow
thebladetocometoacompletestop. AFTERthebladehas
stopped, lift your saw from the work.
ADJUST BEVEL SETTING
51.5
5
4
See Figure 17.
0
3
15
IIIIUnplug your saw.
0
WARNING:
Failure to unplug your saw could result in accidental
starting causing possible serious personal injury.
LOWER BLADE
GUARD
I Loosen bevel adjustment knob.
I Raise motor housing end of saw until you reach desired
angle setting on bevel scale.
I Tighten bevel adjustment knob securely.
Fig. 18
WARNING:
Attempting bevel cut without bevel adjustment knob
securely tightened can result in serious injury.
Page 13
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OPERATION
POSITIVE 0° BEVEL STOP
POSITIVE 0˚
BEVEL STOP
See Figure 19.
ADJUSTMENT
SCREW
Your saw has a positive 0° bevel stop that has been factory
adjusted to assure 0° angle of your saw blade, when making
90° cuts. However, misalignment can occur during shipping.
5
1
.5
5
4
TO CHECK:
0
3
I Unplug your saw.
5
1
HEX NUT
BEVEL
WARNING:
Failure to unplug your saw could result in accidental start-
4 5
0
ing causing possible serious personal injury.
ADJUSTMENT
KNOB
I Place your saw in an upside down position on workbench.
See Figure 19.
I Using a combination square, check squareness of saw
COMBINATION
SQUARE
blade to the base of your saw.
TO ADJUST:
I Unplug your saw.
SAW BLADE
WARNING:
Failure to unplug your saw could result in accidental start-
ing causing possible serious personal injury.
I Loosen bevel adjustment knob.
I Loosen hex nut securing adjustment screw.
I Turn screw and adjust base until square with saw blade.
I Tighten hex nut and bevel adjustment knob securely.
WARNING:
Fig. 19
Attempting to make cuts without bevel adjustment knob
securely tightened can result in serious injury.
LENGTH OF CUT SCALE
See Figure 20.
A length of cut scale has been provided on the base of your
saw. It is parrallel with the saw blade and can be used to
measure the distance into material the blade has cut.
NOTE: Six inches is the maximum length of the cut that can
be measured. Also, it is accurate only when the depth of cut
is set at full maximum depth.
LENGTH OF CUT SCALE
Fig. 20
Page 14
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OPERATION
TO POCKET CUT
See Figure 21.
LOWER BLADE
GUARD
WARNING:
Always adjust bevel setting to zero before making a
pocket cut. Attempting a pocket cut at any other setting
can result in loss of control of your saw possibly causing
serious injury.
Adjust the bevel setting to zero, set blade to correct blade
depth setting, and swing the lower blade guard up using the
lower blade guard handle. ALWAYS RAISE THE LOWER
BLADE GUARD WITH THE HANDLE TO AVOID SERIOUS
INJURY. While holding lower blade guard by the handle,
firmly rest the front of the base flat against the workpiece
with the rear of the handle raised so the blade does not
touch the work. See Figure 21. Depress the switch trigger.
4
5
0
POCKET CUT
ALWAYS LET THE BLADE REACH FULL SPEED, THEN
SLOWLY LOWER BLADE INTO THE WORK UNTIL BASE
IS FLAT AGAINST WORK. After you complete your cut,
release the trigger and allow the blade to come to a complete
stop. After the blade has stopped, remove it from the work.
Then, corners may be cleared out with a hand saw or sabre
saw.
LOWER BLADE
GUARD HANDLE
Fig. 21
WARNING:
Never tie the lower blade guard in a raised position.
Leaving the blade exposed could lead to serious injury.
WARNING:
Donotusethisproductasacomponentofotherproducts.
Also, do not use attachments or accessories not
recommended for use with this product. Any such use
could result in possible serious personal injury.
Page 15
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MAINTENANCE
When electric tools are used on fiberglass boats, sports
cars, wallboard, spackling compounds, or plaster, it has
been found that they are subject to accelerated wear and
possible premature failure, as the fiberglass chips and
grindings are highly abrasive to bearings, brushes,
commutators, etc. Consequently, it is not recommended
that this tool be used for extended work on any fiberglass
material, wallboard, spackling compounds, or plaster. During
any use on fiberglass it is extremely important that the tool
is cleaned frequently by blowing with an air jet.
WARNING:
When servicing use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
GENERAL
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, carbon dust, etc.
WARNING:
Always wear safety goggles or safety glasses with side
shieldsduringpowertooloperationorwhenblowingdust.
If operation is dusty, also wear a dust mask.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc. come in contact
with plastic parts. They contain chemicals that can
damage, weaken, or destroy plastic.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normaloperatingconditions.Therefore,nofurtherlubrication
is required.
IMPORTANT
DOUBLE INSULATION
Servicing of a tool with double insulation requires extreme
care and knowledge of the system and should be performed
onlybyaqualifiedservicetechnician.Forservice,wesuggest
you return the tool to your nearest RYOBI AUTHORIZED
SERVICE CENTER for repair.
Double insulation is a concept in safety in electric power
tools, which eliminates the need for the usual three-wire
grounded power cord. All exposed metal parts are isolated
from the internal metal motor components with protecting
insulation.Doubleinsulatedtoolsdonotneedtobegrounded.
Page 16
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NOTES
Page 17
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RYOBI CIRCULAR SAW – MODEL NUMBER CSB1308
43
42
45
15
44
3
47
15
10
46
44
48
2
49
43
45
4
5
6
7
13
8
9
1
11
12
50
14
51
15
40 (Optional)
15
16
17
30
39
38
18
19
29
37
15
26
31
36
20
32
17
33 (Optional)
41
22
21
31
32
23
24
34
28
25
27
35
Page 18
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RYOBI CIRCULAR SAW – MODEL NUMBER CSB1308
The model number will be found on a plate attached to the motor housing. Always mention the model number in all correspondence regarding your
CIRCULAR SAW or when ordering repair parts.
PARTS LIST
Key
No.
Part
Number
Key
No.
Part
Description
Quan.
Number
Description
Quan.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
982424-001
982383-001
980476-001
976987-001
621342-000
968906-001
968308-010
617096-002
968305-007
968091-002
976986-001
974999-001
976988-001
982333-001
968702-011
968705-009
617966-023
967952-001
974771-002
718602-804
967887-003
972443-002
998463-001
623547-002
612999-001
Cord Tag..................................................... 1
Data Plate................................................... 1
Logo Plate .................................................. 1
Gear Rack Shaft ......................................... 1
Spring ......................................................... 1
Gear Rack .................................................. 1
Gear and Spindle........................................ 1
Retaining Ring ............................................ 1
Ball Bearing (NTN#6003LLBC3/1E) ........... 1
Lower Blade Guard Support ....................... 1
Spindle Lock Decal..................................... 1
Screw (#10-16 x 3/4 in. Pan Hd.) ............... 4
Shield.......................................................... 1
Upper Blade Guard Assembly .................... 1
Screw (#8-16 x 3/4 in. Pan Hd.) ................. 6
Screw (#10-24 x 5/8 in. Pan Hd.) ............... 1
Screw (#8-10 x 2-5/8 in. Pan Hd.) .............. 3
Torsion Spring ............................................ 1
Lower Blade Guard..................................... 1
Retaining Ring ............................................ 1
Inner Flange Bushing ................................. 1
Blade .......................................................... 1
Outer Blade Washer ................................... 1
Spring Washer............................................ 1
28
29
30
31
32
33
615954-003
976907-001
976989-001
979848-001
931744-059
969778-001
Screw (#8-18 x 3/8 in. Pan Hd. T. F.) ......... 2
Bumper ....................................................... 1
Scale Decal ................................................ 1
Adjustment Knob ........................................ 2
Washer ....................................................... 2
Screw - Optional (Use with Key No. 40)
(#10-32 x 3/8 in. Pan Hd. Comb.) ............... 1
34
35
36
37
38
39
40
621433-018
974802-002
621433-001
941401-004
706404-007
614658-010
969862-009
Carriage Bolt (1/4-20 x 3-3/4 in.) ................ 1
Base Assembly........................................... 1
Carriage Bolt (1/4-20 x 5/8 in.) ................... 1
Roll Pin ....................................................... 1
Hex Nut (#8-32) .......................................... 1
Screw (#8-32 x 3/8 in. Pan Hd.) ................. 1
Edge Guide
Optional (Use with Key No. 33) .................. 1
41
42
43
44
45
46
974716-001
617966-031
974547-002
617800-002
968304-009
969807-004
Wrench (9/16 in.) ........................................ 1
Screw (#8-10 x 3/4 in.) ............................. 11
Housing Assembly ...................................... 1
Brush Tube Clamp...................................... 2
Brush Tube Assembly ................................ 2
Motor Module Assembly
(Includes One of Key No. 42) ..................... 1
47
48
49
50
51
52
968303-103
974565-001
974545-002
999506-008
703429-870
980372-001
972000-831
Switch ......................................................... 1
Compression Spring ................................... 1
Switch Trigger............................................. 1
Cord ............................................................ 1
Nylon Washer ............................................. 1
Carrying Case - Not Shown ........................ 1
Owner’s Manual
Blade Screw
(3/8-16 x 3/4 in. Washer Hd.) ..................... 1
Screw (M4 X 8 Pan Hd.)............................. 1
Blade Guard Handle ................................... 1
26
27
090404-080
976906-002
WARNING: Improper repair of a double insulated tool can result in damages to the double insulation system possibly causing electrical shock or
electrocution. Any repairs requiring disassembly of your tool requires safety testing and should only be performed by an Authorized Service Center.
Page 19
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OPERATOR'S MANUAL
7-1/4 in. (184 mm) Circular Saw
Model CSB1308
DOUBLE INSULATED
EXTENSION CORD CAUTION
**Ampere rating
(on tool data plate) 0-2.0
2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
When using a power tool at a considerable distance from a power
source, be sure to use an extension cord that has the capacity to
handle the current the tool will draw. An undersized cord will
cause a drop in line voltage, resulting in overheating and loss of
power. Use the chart to determine the minimum wire size re-
quired in an extension cord. Only round jacketed cords should be
used.
Cord Length
Wire Size (A.W.G.)
25'
50'
16
16
16
16
16
16
16
16
14
16
14
12
14
14
10
14
12
—
100'
When working with a tool outdoors, use an extension cord that is
designed for outside use. This is indicated by the letters "WA" on
the cord's jacket.
CAUTION:
Keep the extension cord clear of the working area. Position the
cord so that it will not get caught on workpiece, tools, or other
obstructions while you are working with a power tool.
Before using any extension cord, inspect it for loose or exposed
wires and cut or worn insulation.
**Used on 12-gauge, 20 amp circuit.
• SERVICE
Now that you have purchased your tool, should a need ever exist for repair parts or
service, simply contact your nearest Ryobi Authorized Service Center. Be sure to
provide all pertinent facts when you call or visit. Please call 1-800-525-2579 in the
United States or 1-800-265-6778 in Canada for your nearest Ryobi Authorized Service
Authorized Service Centers.
• MODEL NO. AND SERIAL NO.
The model number and serial number of this tool will be found on a plate attached to the
motor housing. Please record the serial number in the space provided below.
CSB1308
• MODEL NUMBER
• SERIAL NUMBER
Ryobi Technologies Inc.
1428 Pearman Dairy Road
Anderson, SC 29625
Post Office Box 1207
Anderson, SC 29622-1207
Phone 1-800-525-2579
972000-831
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