RIDGID R8452 User Manual
OPERATOR’S MANUAL
6-1/2 in. 18 VOLT
CIRCULAR SAW
R8452
Your circular saw has been engineered and manufactured to our high standards for dependability, ease of operation, and
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual before using this product.
Thank you for buying a RIDGID product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
1
TABLE OF CONTENTS
Introduction .......................................................................................................................................................................2
General Safety Rules .....................................................................................................................................................3-4
Specific Safety Rules .....................................................................................................................................................4-5
Safety Rules for Charger ...................................................................................................................................................6
Symbols ......................................................................................................................................................................... 7-8
Features ....................................................................................................................................................................... 9-10
Assembly ................................................................................................................................................................... 10-11
Operation ................................................................................................................................................................... 12-21
Maintenance ................................................................................................................................................................... 22
Warranty ......................................................................................................................................................................... 23
Customer Service Information ........................................................................................................................................ 24
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have
been given top priority in the design of this product making it easy to maintain and operate.
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.
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GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all instructions listed below, may
result in electric shock, fire and/or serious personal
injury.
SAVE THESE INSTRUCTIONS
WORK AREA
Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
Do not operate power tools in explosive atmo-
spheres, such as in the presence of flammable
liquids, gases, or dust. Power tools create sparks which
may ignite the dust or fumes.
Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
ELECTRICAL SAFETY
A battery operated tool with integral batteries or a
separate battery pack must be recharged only with
the specified charger for the battery. A charger that
may be suitable for one type of battery may create a risk
of fire when used with another battery.
Use battery operated tool only with specifically
designated battery pack. Use of any other batteries may
create a risk of fire.
Use battery only with charger listed.
MODEL BATTERY PACK CHARGER
R8452 130254003 140276001, 140276002
130254007 140276003, or 140276004
Do not abuse the cord. Never use the cord to carry the
tool. Keep cord away from heat, oil, sharp edges, or
moving parts. Replace damaged cords immediately.
Damaged cords may create a fire.
PERSONAL SAFETY
Stay alert, watch what you are doing and use
common sense when operating a power tool. Do not
use tool while tired or under the influence of drugs,
alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal
injury.
Dress properly. Do not wear loose clothing or jewelry.
Contain long hair. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes, jewelry, or long
hair can be caught in moving parts.
Avoid accidental starting. Be sure switch is in the
locked or off position before inserting battery pack.
Carrying tools with your finger on the switch or inserting
the battery pack into a tool with the switch on invites
accidents.
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.
Do not overreach. Keep proper footing and balance
at all times. Proper footing and balance enable better
control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection.
Dust mask, non-skid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
Do not wear loose clothing or jewelry. Contain long
hair. Loose clothes, jewelry, or long hair can be drawn
into air vents.
Do not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
TOOL USE AND CARE
Use clamps or other practical way to secure and
support the workpiece to a stable platform.
the work by hand or against your body is unstable and
may lead to loss of control.
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.
Do not use tool if switch does not turn it on or off.
A tool that cannot be controlled with the switch is
dangerous and must be repaired.
Disconnect battery pack from tool or place the switch
in the locked or off position before making any adjust
ments, changing accessories, or storing the tool. Such
preventive safety measures reduce the risk of starting the
tool accidentally.
Store idle tools out of reach of children and other
untrained persons. Tools are dangerous in the hands
of untrained users.
When battery pack is not in use, keep it away from
other metal objects like: paper clips, coins, keys, nails,
screws, or other small metal objects that can make
a connection from one terminal to another. Shorting
the battery terminals together may cause sparks, burns,
or a fire.
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.
Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that may
affect the tool’s operation. If damaged, have the tool
serviced before using. Many accidents are caused by
poorly maintained tools.
Use only accessories that are recommended by the
manufacturer for your model. Accessories that may be
suitable for one tool may create a risk of injury when used
on another tool.
Keep the tool and its handle dry, clean and free
from oil and grease. Always use a clean cloth when
cleaning. Never use brake fluids, gasoline, petroleumbased products, or any strong solvents to clean your tool.
Following this rule will reduce the risk of loss of control
and deterioration of the enclosure plastic.
3
Holding
-
GENERAL SAFETY RULES
SERVICE
Tool service must be performed only by qualified
repair personnel. Service or maintenance performed by
unqualified personnel may result in a risk of injury.
SPECIFIC SAFETY RULES
DANGER! Keep hands away from cutting area and
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.
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 KICKBACK)
Do not reach underneath the work. The guard cannot
protect you from the blade below the work.
Check the 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 ac-
cidentally 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 and condition 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 buildup of debris.
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.
Always observe that the lower guard is covering 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.
NEVER hold piece being cut in your hands or across
your leg. It is important to support the work properly to
minimize body exposure, blade binding, or loss of control.
Hold tool by insulated gripping surfaces when per-
forming an operation where the cutting tool may
contact hidden wiring. Contact with a “live” wire will also
make exposed metal parts of the tool “live” and shock
the operator.
When servicing a tool, use only identical replacement
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to
follow Maintenance Instructions may create a risk of
shock or injury.
When ripping always use a rip fence for a straight edge
guide. This improves the accuracy of cut and reduces
the chance of blade binding.
Always use blades with correct size and shape (dia-
mond vs. round) arbor 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 washers or
bolts. The blade washers and bolt were specially de-
signed for the saw, for optimum performance and safety
of operation.
CAUSES AND 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.
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 a result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking
proper precautions as given below:
Maintain a firm grip on the saw and position your body
and arm in a way that allows you to resist KICKBACK
forces. KICKBACK forces can be controlled by the opera-
tor, if proper precautions are taken.
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.
When restarting a saw in the workpiece, center the
saw blade in the kerf and check that 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.
4
SPECIFIC SAFETY RULES
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.
Do not use dull or damaged blade. 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 cut. If blade ad-
justment shifts while cutting, it will cause binding and
KICKBACK.
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.
ADDITIONAL SAFETY RULES
Know your power tool. Read operator's manual care-
fully. Learn its applications and limitations, 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.
Always wear safety glasses with side shields. Everyday
glasses have only impact resistant lenses. They are NOT
safety glasses. Following this rule will reduce the risk of
eye injury.
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.
Protect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will
reduce the risk of serious personal injury.
Inspect tool cords periodically and, if damaged, have
repaired at your nearest Authorized Service Center.
Constantly stay aware of cord location. Following this
rule will reduce the risk of electric shock or fire.
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, binding of moving parts,
breakage of parts, mounting, 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 shock, fire, or serious injury.
Inspect for and remove all nails from lumber before
using this tool. Following this rule will reduce the risk of
serious personal injury.
Drugs, alcohol, medication. Do not operate tool while
under the influence of drugs, alcohol, or any medication. Following this rule will reduce the risk of electric
shock, fire, or serious personal injury.
Battery tools do not have to be plugged into an elec-
trical outlet; therefore, they are always in operating
condition. Be aware of possible hazards when not
using your battery tool or when changing accessories.
Following this rule will reduce the risk of electric shock,
fire, or serious personal injury.
Do not place battery tools or their batteries near fire
or heat. This will reduce the risk of explosion and possibly
injury.
Batteries vent hydrogen gas and can explode in the
presence of a source of ignition, such as a pilot light.
To reduce the risk of serious personal injury, never use
any cordless product in the presence of open flame. An
exploded battery can propel debris and chemicals. If
exposed, flush with water immediately.
Do not charge battery tool in a damp or wet location.
Following this rule will reduce the risk of electric shock.
For best results, your battery tool should be charged
in a location where the temperature is more than
50°F but less than 100°F. Do not store outside or in
vehicles.
Under extreme usage or temperature conditions, bat-
tery leakage may occur. If liquid comes in contact with
your skin, wash immediately with soap and water, then
neutralize with lemon juice or vinegar. If liquid gets
into your eyes, flush them with clean water for at least
10 minutes, then seek immediate medical attention.
Following this rule will reduce the risk of serious personal
injury.
5
SAFETY RULES FOR CHARGER
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all instructions listed below, may
result in electric shock, fire and/or serious personal
injury.
Before using battery charger, read all instructions and
cautionary markings in this manual, on battery charger,
battery, and product using battery to prevent misuse of
the products and possible injury or damage.
CAUTION:
To reduce the risk of electric shock or damage
to the charger and battery, charge only nickelcadmium rechargeable batteries as specifically
designated on your charger. Other types of
batteries may burst, causing personal injury or
damage.
Do not use charger outdoors or expose to wet or damp
conditions. Water entering charger will increase the risk
of electric shock.
Use of an attachment not recommended or sold by the
battery charger manufacturer may result in a risk of
fire, electric shock, or injury to persons. Following this
rule will reduce the risk of electric shock, fire, or serious
personal injury.
Do not abuse cord or charger. Never use the cord to
carry the charger. Do not pull the charger cord rather than
the plug when disconnecting from receptacle. Damage
to the cord or charger could occur and create an electric
shock hazard. Replace damaged cords immediately.
Make sure cord is located so that it will not be stepped
on, tripped over, come in contact with sharp edges
or moving parts or otherwise subjected to damage or
stress. This will reduce the risk of accidental falls, which
could cause injury, and damage to the cord, which could
result in electric shock.
Keep cord and charger from heat to prevent damage
to housing or internal parts.
Do not let gasoline, oils, petroleum-based products,
etc. come in contact with plastic parts. They contain
chemicals that can damage, weaken, or destroy
plastic.
An extension cord should not be used unless
absolutely necessary. Use of improper extension cord
could result in a risk of fire and electric shock. If extension
cord must be used, make sure:
a. That pins on plug of extension cord are the same
number, size and shape as those of plug on charger.
b. That extension cord is properly wired and in
good electrical condition; and
c. That wire size is large enough for AC ampere
rating of charger as specified below:
Cord Length (Feet) 25' 50' 100'
Cord Size (AWG) 16 16 16
NOTE: AWG = American Wire Gauge
Do not operate charger with a damaged cord or
plug, which could cause shorting and electric shock. If
damaged, have the charger replaced by an authorized
serviceman.
Do not operate charger if it has received a sharp blow,
been dropped, or otherwise damaged in any way.
Take it to an authorized serviceman for electrical check
to determine if the charger is in good working order.
Do not disassemble charger. Take it to an authorized
serviceman when service or repair is required. Incorrect
reassembly may result in a risk of electric shock or fire.
Unplug charger from outlet before attempting any
maintenance or cleaning to reduce the risk of electric
shock.
Disconnect charger from the power supply when
not in use. This will reduce the risk of electric shock or
damage to the charger if metal items should fall into the
opening. It also will help prevent damage to the charger
during a power surge.
Risk of electric shock. Do not touch uninsulated portion
of output connector or uninsulated battery terminal.
Save these instructions. Refer to them frequently and
use them to instruct others who may use this tool. If you
loan someone this tool, loan them these instructions also
to prevent misuse of the product and possible injury.
IMPORTANT SAFETY INSTRUCTIONS
1. SAVE THESE INSTRUCTIONS
This manual contains important safety and operating instructions for battery chargers 140276003.
2. Before using battery charger, read all instructions and cautionary markings on battery charger, battery, and product
using battery.
3. CAUTION: To reduce the risk of injury, charge only nickel-cadmium rechargeable batteries. Other types of batteries
may burst, causing personal injury or damage.
6
SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation
of these symbols will allow you to operate the tool better and safer.
SYMBOL NAME
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
min Minutes Time
Alternating Current Type of current
Direct Current Type or a characteristic of current
n
o
.../min Per Minute Revolutions, strokes, surface speed, orbits etc., per minute
No Load Speed Rotational speed, at no load
Class II Construction Double-insulated construction
DESIGNATION/EXPLANATION
Wet Conditions Alert Do not expose to rain or use in damp locations.
Read The Operator’s Manual
Eye Protection
Safety Alert Precautions that involve your safety.
No Hands Symbol
No Hands Symbol
No Hands Symbol
No Hands Symbol
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Always wear safety goggles or safety glasses with side shields and,
as necessary, a full face shield when operating this product.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Failure to keep your hands away from the blade will result in serious
personal injury.
Hot Surface
To reduce the risk of injury or damage, avoid contact with any hot
surface.
7
SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER:
WARNING:
CAUTION
CAUTION
Indicates an imminently hazardous situation, which, if not avoided, will result
in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
(Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to your nearest
AUTHORIZED SERVICE CENTER for repair. When
servicing, use only identical replacement parts.
WARNING:
To avoid serious personal injury, do not attempt
to use this product until you read thoroughly and
understand completely the operator’s manual.
If you do not understand the warnings and
instructions in the operator’s manual, do not use
this product. Call RIDGID customer service for
assistance.
WARNING:
The operation of any power 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, when needed, a full face shield. We recommend Wide Vision Safety Mask for use
over eyeglasses or standard safety glasses with side shields. Always use eye protection which is marked
to comply with ANSI Z87.1.
SAVE THESE INSTRUCTIONS
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