Ryobi Cordless Saw R10631 User Guide

OPERATOR'S MANUAL  
5-1/2 in. CORDLESS CIRCULAR  
SAW MODEL NO. R10631  
SPECIFICATIONS:  
Blade Diameter  
5-1/2 in. (140 mm)  
3/8 in. (10 mm)  
1-9/16 in. (40 mm)  
1-1/8 in. (29 mm)  
4,200 RPM  
Blade Arbor  
Cutting Depth at 90°  
Cutting Depth at 45°  
No Load Speed  
Motor  
18 Volt DC  
Charge Rate  
1 Hour  
Charger Rating  
120 Volts, 60 Hz, AC  
THANK YOU FOR BUYING A RYOBI CORDLESS CIRCULAR SAW.  
Your new cordless 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 cordless circular saw.  
Pay close attention to the Rules for Safe Operation, Warnings, and Cautions. If you use your cordless 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  
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RULES FOR SAFE OPERATION  
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.  
USE RIGHT TOOL. Don't force small tool or attach-  
ment to do the job of a heavy duty tool. Don't use tool  
for purpose not intended - for example - A circular saw  
should never be used for cutting tree limbs or logs.  
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  
instructing others who may use this tool.  
WEAR PROPER APPAREL. Do not wear loose cloth-  
ing or jewelry that can get caught in tool's moving parts  
and cause personal injury. Rubber gloves and nonskid  
footwear are recommended when working outdoors.  
Wear protective hair covering to contain long hair and  
keep it from being drawn into nearby air vents.  
ALWAYS WEAR SAFETY GLASSES. Everyday eye-  
glasses have only impact-resistant lenses; they are  
NOT safety glasses.  
READ ALL INSTRUCTIONS  
KNOWYOURPOWERTOOL.Readoperator'smanual  
carefully. Learn its applications and limitations as well  
as the specific potential hazards related to this tool.  
PROTECT YOUR LUNGS. Wear a face mask or dust  
mask if operation is dusty.  
GUARDAGAINSTELECTRICALSHOCKbyprevent-  
ing body contact with grounded surfaces. For example:  
Pipes, radiators, ranges, refrigerator enclosures.  
PROTECT YOUR HEARING. Wear hearing protection  
during extended periods of operation.  
SECUREWORK. Useclampsoravisetoholdwork. It's  
safer than using your hand and it frees both hands to  
operate tool.  
KEEP WORK AREA CLEAN. Cluttered areas and  
benches invite accidents.  
AVOID DANGEROUS ENVIRONMENT. Don't use  
power tool in damp or wet locations or expose to rain.  
Keep work area well lit.  
DON'T OVERREACH. Keep proper footing and bal-  
ance at all times. Do not use while standing on a ladder  
or unstable support.  
KEEP CHILDREN AND VISITORS AWAY. All visitors  
should wear safety glasses and be kept a safe distance  
from work area. Do not let visitors contact tool or  
extension cord.  
MAINTAIN TOOLS WITH CARE. Keep tools sharp at  
all times, and clean for best and safest performance.  
Follow instructions for lubricating and changing acces-  
sories.  
STORE IDLE TOOLS. When not in use tools should be  
stored in a dry and high or locked-up place - out of the  
reach of children.  
REMOVEADJUSTINGKEYSANDWRENCHES.Form  
habitofcheckingtoseethatkeysandadjustingwrenches  
are removed from tool before turning it on.  
DON'T FORCE TOOL. It will do the job better and safer  
at the rate for which it was designed.  
Page 3  
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RULES FOR SAFE OPERATION (Continued)  
NEVER USE IN AN EXPLOSIVE ATMOSPHERE.  
Normal sparking of the motor could ignite flammable  
liquids, gases, or fumes.  
WARNING:  
Never use a battery that has been dropped or received a  
sharp blow. A damaged battery is subject to explosion.  
Properlydisposeofadroppedbatteryimmediately.Failure  
to heed this warning can result in serious personal injury.  
KEEP HANDLES DRY, CLEAN, AND FREE FROM  
OIL AND GREASE. Always use a clean cloth when  
cleaning. Never use brake fluids, gasoline, petroleum-  
based products or any strong solvents to clean your  
tool.  
DO NOT PLACE BATTERY TOOLS OR THEIR  
STAY ALERT. Watch what you are doing and use  
common sense. Do not operate tool when you are tired.  
Do not rush.  
BATTERIESNEARFIREORHEAT.Theymayexplode.  
WARNING:  
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  
anauthorizedservicecenterunlessindicatedelsewhere  
in this operator's manual.  
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.  
WARNING:  
A damaged battery is subject to explosion. To avoid  
serious personal injury, properly dispose of a damaged  
battery.  
DO NOT USE TOOL IF SWITCH DOES NOT TURN IT  
ON AND OFF. Have defective switches replaced by an  
authorized service center.  
DRUGS, ALCOHOL, MEDICATION. Do not operate  
tool while under the influence of drugs, alcohol, or any  
medication.  
DO NOT CHARGE BATTERY TOOL IN A DAMP OR  
WET LOCATION.  
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.  
CUTTING INTO ELECTRICAL WIRING IN WALLS  
ANDFLOORSCANCAUSETHEBLADEANDMETAL  
PARTS TO BECOME ELECTRICALLY LIVE. Do not  
touch metal parts when cutting into walls and floors;  
grasp only the insulated handle(s) provided on the tool.  
Make sure hidden electrical wiring, water pipes, and  
mechanical hazards are not in the blade path when  
cutting into a wall or floor.  
Underextremeusageortemperatureconditions,battery  
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 in  
your eyes, flush them with clean water for at least 10  
minutes, then seek immediate medical attention.  
AVOID CUTTING NAILS. Inspect for and remove all  
nails from lumber before cutting.  
If carrying your battery tool at your side, make sure it is  
not running and your finger is not on the switch. Avoid  
accidental starting.  
IMPORTANT SAFETY RULES FOR BATTERY  
TOOLS  
SECURE WORK before applying power. NEVER hold  
workpiece in your hand or across your legs.  
Batterytoolsdonothavetobepluggedintoanelectrical  
outlet; therefore, they are always in an operating  
condition. Be aware of possible hazards when carrying  
your battery tool, when making adjustments to it, or  
when changing accessories.  
WHEN SERVICING USE ONLY IDENTICAL  
REPLACEMENT PARTS.  
USE ONLY THE CHARGER AND BATTERY  
RECOMMENDED FOR YOUR BATTERY TOOL. Do  
notsubstituteanyothercharger.Useofanothercharger  
could cause batteries to explode causing possible  
serious injury.  
Page 4  
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RULES FOR SAFE OPERATION (Continued)  
IMPORTANT SAFETY INSTRUCTIONS FOR  
CIRCULAR SAWS  
IMPORTANT SAFETY INSTRUCTIONS FOR  
CHARGER  
KEEP GUARDS IN PLACE AND IN WORKING  
ORDER. Never wedge or tie lower blade guard open.  
Check operation of lower blade guard before each use.  
Do not use if lower blade guard does not close briskly  
over saw blade.  
SAVE THESE INSTRUCTIONS. This manual contains  
important safety and operating instructions for battery  
charger part numbers 1400667 and 1423701.  
Before using battery charger, read all instructions and  
cautionary markings in this manual, on battery charger,  
and product using battery charger.  
WARNING:  
If saw is dropped, lower blade guard or bumper may be  
bent, restricting full return. If lower blade guard or bumper  
becomes bent or damaged, replace them before reuse.  
WARNING:  
To reduce risk of injury, charge only nickel-cadmium type  
rechargeable batteries. Other types of batteries may  
burst causing personal injury and damage.  
KEEP BLADES CLEAN AND SHARP. Sharp blades  
minimize stalling and kickback.  
Do not expose charger to rain or snow.  
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.  
DANGER:  
KEEP HANDS AWAY FROM CUTTING AREA. Keep  
hands away from blade. Do not reach underneath work  
while blade is rotating. Do not attempt to remove cut  
material when blade is moving.  
Toreduceriskofdamagetochargerbodyandcord, pull  
by charger plug rather than cord when disconnecting  
charger.  
Make sure cord is located so that it will not be stepped  
on, tripped over, or otherwise subjected to damage or  
stress.  
WARNING:  
Blades coast after turn off.  
Anextensioncordshouldnotbeusedunlessabsolutely  
necessary. Use of improper extension cord could  
result in a risk of fire and electric shock. If extension  
cord must be used, make sure:  
USE RIP FENCE. Always use a fence or straight edge  
guide when ripping.  
SUPPORT LARGE PANELS. To minimize the risk of  
blade pinching and kickback, always support large  
panels as shown in Figure 11, Page 12. When cutting  
operation requires the resting of the saw on the  
workpiece, the saw should be rested on the larger  
portion and the smaller piece cut off.  
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:  
LOWER BLADE GUARD.  
Cord Length (Feet) 25' 50'  
Cord Size (AWG) 16 16  
100'  
16  
WARNING:  
If lower blade guard must be raised to make a cut, always  
raise it with the retracting handle to avoid serious injury.  
See Figure 20, Page 16.  
NOTE: AWG = American Wire Gage  
DO NOT OPERATE CHARGER WITH A DAMAGED  
CORD OR PLUG. If damaged, have replaced  
immediately by a qualified serviceman.  
GUARD AGAINST KICKBACK.  
Do not operate charger if it has received a sharp blow,  
been dropped, or otherwise damaged in any way; take  
it to a qualified serviceman.  
Kickback occurs when the saw stalls rapidly and is  
driven back towards the operator.  
Releaseswitchimmediatelyifbladebindsorsawstalls.  
Keep blades sharp.  
Do not disassemble charger; take it to a authorized  
servicemanwhenserviceorrepairisrequired.Incorrect  
reassembly may result in a risk of electric shock or fire.  
Support large panels as shown in Figure 11, Page 12.  
Use fence or straight edge guide when ripping.  
Don't force tool.  
To reduce risk of electric shock, unplug charger from  
outlet before attempting any maintenance or cleaning.  
Turning off controls will not reduce this risk.  
Stay alert exercise caution.  
Do not use charger in wet or damp conditions.  
Don't remove saw from work during a cut while the  
blade is moving. See Pages 12 and 13.  
Disconnect charger from power supply when not in use.  
Page 5  
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RULES FOR SAFE OPERATION (Continued)  
BEFORE MAKING A CUT, BE SURE THE DEPTH  
AND BEVEL ADJUSTMENTS ARE TIGHT.  
WARNING:  
USE ONLY CORRECT BLADES. Do not use blades  
with incorrect size holes. Never use blade washers or  
boltsthataredefectiveorincorrect.Themaximumblade  
capacity of your saw is 5-1/2 inches (140 mm).  
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:  
NEVER touch the blade or other moving parts during  
use.  
lead from lead-based paints,  
NEVER start a saw when its blade is touching the  
workpiece.  
crystalline silica from bricks and cement and other  
masonry products, and  
NEVER lay a tool down before its moving parts have  
come to a complete stop.  
arsenicandchromiumfromchemically-treatedlumber.  
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.  
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.  
SAVE THESE INSTRUCTIONS  
Page 6  
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FEATURES  
SWITCH  
KNOW YOUR CORDLESS CIRCULAR SAW  
See Figure 1.  
Your saw is equipped with a lock-off button which reduces  
the possibility of accidental starting. The lock-off button is  
located on the handle above the switch trigger. You must  
depress the lock-off button in order to pull the switch trigger.  
The lock resets each time the trigger is released.  
Before attempting to use any tool, familiarize yourself with  
all operating features and safety requirements.  
Features include easily operated bevel cut and depth of cut  
adjustment mechanisms; positive 0° bevel stop; spindle  
lock; and blade wrench storage.  
NOTE: You can depress the lock-off button from either the  
left or right side.  
APPLICATIONS  
(Use only for the purpose listed below)  
Cutting all types of wood products (lumber,  
plywood, paneling).  
OPTIONAL RIP  
GUIDE SCREW  
(WING SCREW)  
LOCK-OFF  
BUTTON  
SWITCH  
TRIGGER  
BLADE WRENCH  
(5 mm HEX KEY)  
BLADE WRENCH  
STORAGE AREA  
DEPTH OF  
CUT ADJUSTMENT  
(DEPTH ADJUSTMENT KNOB)  
SPINDLE  
LOCK BUTTON  
OPTIONAL RIP  
UPPER  
BLADE GUARD  
50  
45  
GUIDE SCREW  
30  
22  
(WING SCREW)  
BEVEL CUT  
ADJUSTMENT  
LOWER  
(BEVEL ADJUSTMENT KNOB)  
BLADE GUARD  
BASE  
ASSEMBLY  
Fig. 1  
BLADE  
WARNING:  
WARNING:  
Do not allow familiarity with your circular saw to make you  
careless. Remember that a careless fraction of a second  
is sufficient to inflict severe injury.  
Always wear safety goggles or safety glasses with side  
shieldswhenoperatingtools. Failuretodosocouldresult  
in objects being thrown into your eyes, resulting in  
possible serious injury.  
Page 7  
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OPERATION  
LED FUNCTION OF CHARGER 1400667  
GREEN LIGHT "ON"  
INDICATES SLOW  
CHARGING MODE OR  
FULLY CHARGED  
See Figure 2.  
RED LIGHT "ON"  
INDICATES FAST  
CHARGING MODE  
LED WILL BE LIGHTED TO INDICATE STATUS OF  
CHARGER AND BATTERY PACK:  
Red LED Lighted = Fast Charging Mode.  
BATTERY  
CHARGER  
Green LED Lighted = Slow Charging Mode and Fully  
Charged Battery Pack.  
Yellow and Green LED Lighted = Soft Start Mode, or After  
1/2 Hour Equals Hot or Defective Battery Pack.  
CHARGING BATTERY PACK  
The battery pack for this tool has been shipped in a low  
charge condition to prevent possible problems. Therefore,  
you should charge it until light on front of charger changes  
from red to green.  
YELLOW AND  
GREEN LIGHTS INDICATE  
SOFT START MODE  
NOTE: Batteries will not reach full charge the first time they  
are charged. Allow several cycles (cutting followed by  
recharging) for them to become fully charged.  
BATTERY PACK  
Charge battery pack only with the charger provided.  
Make sure power supply is normal house voltage,  
120 volts, 60 Hz, AC only.  
Connect charger to power supply.  
Place battery pack in charger aligning raised rib in  
charger with groove in battery pack.  
Press down on battery pack to be sure contacts on  
battery pack engage properly with charger contacts.  
Normally, the yellow and green lights on charger will come  
on. This indicates charger is in soft start mode and should  
switch to fast charge mode within 5 minutes. When charger  
is in fast charge mode the red light will come on. If after a  
period of 15 minutes the yellow and green lights remain  
on, remove battery pack, wait 1 minute and reinsert battery  
pack in charger. If the yellow and green lights continue to  
remain on after an additional 15 minutes, the battery pack  
is damaged and will not accept a charge. Return battery  
pack to your nearest Ryobi Authorized Service Center for  
checking or replacing.  
Fig. 2  
fore attempting to recharge. When the battery pack be-  
comes discharged and is hot, this will cause the yellow and  
green lights on your battery charger to come on instead of  
the red light. The yellow and green lights indicate soft start  
mode and will switch to green only, indicating slow charge  
mode. The red light indicates fast charge mode, 1 hour  
charge time. The green light indicates slow charge mode,  
requiring overnight charging for batteries to reach full charge.  
If the green light comes on after letting battery pack cool  
down, remove it from charger for additional cooling.  
Once the battery pack cools down, it will recharge battery  
pack in fast charging mode as normal.  
When your battery pack becomes fully charged, the red  
light will turn OFF and the green light will turn ON.  
After normal usage, 1 hour of charging time is required to  
be fully charged. A minimum charge time of 1-1/2 hours is  
required to recharge a completely discharged tool.  
The battery pack will become slightly warm to the touch while  
Do not leave a hot battery pack in charger until it cools  
down. The green light will not go off when battery pack  
cools. If fast charge mode is desired, you must physically  
remove a hot battery pack from the charger, let it cool, then  
place it back in charger after it has cooled down.  
charging. This is normal and does not indicate a problem.  
Do not place charger in an area of extreme heat or cold.  
It will work best at normal room temperature.  
When the batteries become fully charged, unplug your  
NOTE: This situation only occurs when continuous use of  
your saw causes the batteries to become hot. It does not  
occur under normal circumstances. Refer to "CHARG-  
ING BATTERY PACK" for normal recharging of batteries.  
If the charger does not charge your battery pack under  
normal circumstances, return both the battery pack and  
charger to your nearest authorized repair center for electri-  
cal check.  
charger from power supply and remove the battery pack.  
IMPORTANT INFORMATION FOR RECHARGING  
HOT BATTERIES  
When using your circular saw continuously, the batteries in  
your battery pack will become hot. You should let a hot  
battery pack cool down for approximately 30 minutes be-  
Page 8  
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OPERATION  
LED FUNCTION OF CHARGER 1423701  
See Figure 3.  
GREEN LIGHT "ON"  
INDICATES FULLY  
CHARGED  
BATTERY  
CHARGER  
LED WILL BE LIGHTED TO INDICATE STATUS OF  
CHARGER AND BATTERY PACK:  
Red LED lighted = Fast Charging Mode  
Green LED lighted = Fully Charged Battery Pack  
Yellow and Green LED Lighted = Control Charge or  
Defective Battery Pack.  
CHARGING BATTERY PACK  
The battery pack for this tool has been shipped in a low  
charge condition to prevent possible problems. Therefore,  
you should charge it prior to use.  
RED LIGHT "ON"  
INDICATES FAST  
CHARGING MODE  
YELLOW AND GREEN LIGHTS "ON"  
INDICATES CONTROL CHARGE OR  
POSSIBLE FAULTY BATTERY  
NOTE: Batteries will not reach full charge the first time they  
are charged. Allow several cycles (cutting followed by re-  
charging) for them to fully charge.  
Charge battery pack only with the charger provided.  
BATTERY  
CHARGER  
Make sure power supply is normal house voltage,  
120 volts, 60 Hz, AC only.  
Connect charger to power supply.  
Place battery pack in charger. See Figure 3. Align raised  
rib on battery pack with groove in charger.  
Press down on battery pack to be sure contacts on  
battery pack engage properly with contacts in charger.  
When properly connected, red light will turn on.  
Normally, the yellow and green lights on the charger will  
come on. This indicates charger is in control charge  
mode and should switch to fast charge mode within 5  
minutes. When charger is in fast charge mode the red  
light will come on. If after a period of 15 minutes the  
yellow and green lights remain on, remove the battery  
pack, wait 1 minute and reinsert battery pack in charger.  
If the yellow and green lights continue to remain on an  
additional 15 minutes, the battery pack is damaged and  
will not accept charge.  
BATTERY  
PACK  
Fig. 3  
IMPORTANT INFORMATION FOR RECHARGING  
HOT BATTERIES  
When using your saw continuously, the batteries in your  
battery pack become hot. You should let a hot battery pack  
cooldownforapproximately30minutesbeforeattemptingto  
recharge.  
When your battery pack becomes fully charged, the red  
light will turn off and the green light will turn on.  
After normal usage, 1 hour of charge time is required to  
be fully charged. A minimum charge time of 1 to 1-1/2  
hours is required to recharge a completely discharged  
tool.  
NOTE: This situation occurs when continuous use of your  
saw causes the batteries to become hot. It does not occur  
under normal circumstances. Refer to "Charging Your  
Battery Pack" for normal recharging of batteries. If the  
charger does not charge your battery pack under normal  
circumstances, return both the battery pack and charger to  
your nearest Ryobi Authorized Service Center for electri-  
cal check.  
The battery pack will become slightly warm to the touch  
while charging. This is normal and does not indicate a  
problem.  
Do not place charger in an area of extreme heat or cold.  
It will work best at normal room temperature.  
Page 9  
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OPERATION  
DEPRESS LATCHES TO  
RELEASE BATTERY PACK  
WARNING:  
Always remove battery pack from your saw when you  
are assembling parts, making adjustments, assembling  
or removing blades, cleaning, or when not in use. Re-  
moving battery pack will prevent accidental starting that  
could cause serious personal injury.  
TO REMOVE BATTERY PACK  
Locate latches on end of battery pack and depress to  
release battery pack from your saw. See Figure 4.  
50  
0
45  
5
Remove battery pack from your saw.  
30  
22  
LATCHES  
BATTERY  
PACK  
3
2
WARNING:  
1
4 5  
0
1
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
Fig. 4  
TO INSTALL BATTERY PACK  
See Figure 4.  
SPINDLE  
LOCK  
BUTTON  
Place battery pack in your saw. Align raised rib inside  
SPINDLE  
saw with groove on battery pack.  
Make sure the latches on each side of your battery pack  
snap in place and battery pack is secured in saw before  
beginning operation.  
50  
0
45  
5
30  
0
22  
CAUTION:  
When placing battery pack in your saw, be sure raised rib  
inside saw aligns with groove on battery pack and latches  
snapinplaceproperly.Improperassemblyofbatterypack  
can cause damage to internal components.  
3
2
1
5
4
0
1
INNER  
BLADE  
WASHER  
BLADE  
SCREW  
LOWER  
BLADE  
OUTER  
BLADE  
WASHER  
GUARD  
HANDLE  
BLADE  
Fig. 5  
WARNING:  
A 5-1/2 in. (140 mm) blade is the maximum blade capac-  
ity of your saw. Never use a blade that is too thick to  
allow outer blade washer to engage with the flats on the  
spindle. Larger blades will come in contact with the blade  
guard, while thicker blades will prevent blade screw from  
securing blade on spindle. Either of these situations could  
result in a serious accident.  
Locate latches on end of battery pack and depress to re-  
lease battery pack from your saw. See Figure 4.  
Remove blade wrench (5 mm hex key) from storage area.  
See Figure 1.  
Depress spindle lock button and remove blade screw and  
outer blade washer. See Figure 5.  
NOTE: Turn blade screw clockwise to remove.  
TO ASSEMBLE OR REMOVE BLADE  
TO ASSEMBLE BLADE:  
Wipe a drop of oil onto inner blade washer and outer blade  
washer where they contact blade.  
Remove battery pack from saw.  
WARNING:  
If inner blade washer has been removed, replace it be-  
fore placing blade on spindle. Failure to do so could cause  
an accident since blade will not tighten properly.  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal injury.  
Page 10  
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OPERATION  
Fit saw blade inside lower blade guard and onto spindle.  
NOTE: The saw teeth point upward at the front of saw as  
shown in figure 5.  
Replace outer blade washer.  
Depress spindle lock button, then replace blade screw.  
Tighten blade screw securely.  
SPINDLE  
LOCK BUTTON  
NOTE: Turn blade screw counterclockwise to tighten.  
Return blade wrench to storage area.  
REMEMBER:Neveruseabladethatistoothicktoallowthe  
outer blade washer to engage with the flats on the spindle.  
TO REMOVE BLADE:  
50  
45  
BLADE  
SCREW  
30  
22  
Remove battery pack from saw.  
3
2
WARNING:  
1
5
4
0
1
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
BLADE  
WRENCH  
Remove blade wrench from storage area. See Figure 1.  
Fig. 6  
Position your saw as shown in figure 6, depress spindle  
lock button, and remove blade screw.  
NOTE: Turn blade screw clockwise to remove.  
Remove outer blade washer. See Figure 5.  
NOTE: Blade can be removed at this point.  
LOWER BLADE GUARD  
IS IN UP POSITION  
WHEN MAKING A CUT  
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. Use gum and pitch remover, hot water, or kerosene to  
remove these accumulations. DO NOT USE GASOLINE.  
BLADE GUARD SYSTEM  
Thelowerbladeguardattachedtoyourcordlesscircular  
saw is there for your protection and safety. It should  
never be altered for any reason. If it becomes damaged  
or begins to return slow or sluggish, do not operate your  
saw until the damage has been repaired or replaced.  
Always leave guard in operating position when using saw.  
BLADE EXPOSED ON  
UNDERSIDE OF WORKPIECE  
Fig. 7  
Never use saw when guard is not operating correctly.  
Guard should be checked for correct operation before  
each use. If you drop your saw, check the lower blade  
guard and bumper for damage at all depth settings  
before reuse.  
DANGER:  
When sawing through workpiece, lower blade guard does  
not cover blade on the underside of workpiece. Since  
blade is exposed on underside of workpiece, keep hands  
and fingers away from cutting area. Any part of your body  
coming in contact with moving blade will result in serious  
injury. See Figure 7.  
NOTE: The guard is operating correctly when it moves  
freelyandreadilyreturnstotheclosedposition. Ifforany  
reasonyourlowerbladeguarddoesnotclosefreely,take  
it to the nearest Ryobi authorized service center for  
service before using.  
Page 11  
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OPERATION  
KICKBACK  
See Figure 8.  
The best guard against kickback is to avoid dangerous  
practices.  
Kickback occurs when the blade stalls rapidly and the saw is  
driven back towards you. Blade stalling is caused by any  
action which pinches the blade in the wood.  
KICKBACK  
BLADE SET TOO DEEP  
Fig. 8  
DANGER:  
Release switch immediately if blade binds or saw stalls.  
Kickbackcouldcauseyoutolosecontrolofyoursaw.Loss  
of control can lead to serious injury.  
KICKBACK IS CAUSED BY:  
Incorrect blade depth setting. See Figure 8.  
Sawing into knots or nails in workpiece.  
Twisting blade while making a cut.  
50  
4
5
30  
22.5  
1
5
0
Making a cut with a dull, gummed up, or improperly set  
blade.  
Incorrectly supporting workpiece. See Figure 9.  
Forcing a cut.  
WRONG  
Fig. 9  
Cutting warped or wet lumber.  
Tool misuse or incorrect operating procedures.  
TO LESSEN THE CHANCE OF KICKBACK:  
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 10. One blade  
tooth below the material to be cut works best for most  
efficient cutting action.  
Inspect the workpiece for knots or nails before beginning  
a cut. Never saw into a knot or nail.  
Make straight cuts. Always use a straight edge guide  
when rip cutting. This helps prevent twisting the blade in  
the cut.  
CORRECT BLADE DEPTH SETTING =  
BLADE EXPOSED ONE BLADE TOOTH  
BELOW THE MATERIAL TO BE CUT  
Always use clean, sharp and properly set blades. Never  
Fig. 10  
make cuts with dull blades.  
To avoid pinching the blade, support the workpiece  
properly before beginning a cut. The right and wrong  
ways to support large pieces of work are shown in  
figures 9 and 11.  
50  
45  
30  
22.5  
1
5
0
RIGHT  
Fig. 11  
Page 12  
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OPERATION  
When making a cut use steady, even pressure. Never  
force cuts.  
Do not cut warped or wet lumber.  
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.  
When using your saw, always stay alert and exercise  
control. Do not remove your saw from workpiece while  
the blade is moving.  
DEPTH OF CUT ADJUSTMENT  
Always keep correct blade depth setting. The correct blade  
depth setting for all cuts should not exceed 1/4 inch (6.4 mm)  
below the material to be cut. More blade depth will increase  
the chance of kickback and cause the cut to be rough. One  
blade tooth below the material to be cut works best for most  
efficient cutting action.  
DEPTH  
ADJUSTMENT  
KNOB  
BASE  
ASSEMBLY  
TO ADJUST BLADE DEPTH  
Fig. 12  
Remove battery pack from saw.  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
50  
45  
0
5
30  
22  
Loosen depth adjustment knob. See Figure 12.  
Hold base flat against the workpiece and raise or lower  
saw until the required depth is reached.  
Tighten depth adjustment knob securely.  
STARTING A CUT  
RIGHT  
Fig. 13  
Know the right way to use your saw.  
See Figure 13.  
Never use your saw as shown in figure 14.  
Neverplaceyourhandontheworkpiecebehindyoursaw  
while making a cut.  
WARNING:  
5
45  
0
5
30  
0
22  
2
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.  
Fig. 14  
WRONG  
Page 13  
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OPERATION  
TO HELP MAINTAIN CONTROL:  
Always support your workpiece near the cut.  
Support your workpiece so the cut will be on your left.  
Clamp your workpiece so it will not move during the cut.  
Place your workpiece with its good side down.  
NOTE: The good side is the side on which appearance is  
important.  
50  
0
45  
5
Before beginning a cut, draw a guideline along the desired  
line of cut. Then place front edge of base on that part of your  
workpiece that is solidly supported. See Figure 13.  
30  
0
2
2
Never place your saw on that part of the workpiece that  
will fall off when the cut is made. See Figure 15.  
Hold your saw firmly with both hands.  
See Figure 16.  
Depressthelock-offbuttonandsqueezetheswitchtriggerto  
start your saw. Always let the blade reach full speed, then  
guide your saw into the workpiece.  
WRONG  
Fig. 15  
WARNING:  
The blade coming in contact with the workpiece before it  
reaches full speed could cause your saw to "kickback"  
towards you resulting in serious injury.  
When making a cut use steady, even pressure. Forcing  
causes rough cuts, could shorten the life of your saw and  
could cause "kickback."  
50  
45  
30  
22  
DANGER:  
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 cutting area. Any  
part of your body coming in contact with the moving blade  
will result in serious injury.  
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.  
RIGHT  
Fig. 16  
CAUTION:  
Tomakesawingeasierandsafer, alwaysmaintainproper  
control of your saw. Loss of control of your saw could  
cause an accident resulting in possible serious injury.  
Page 14  
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OPERATION  
TO CROSS CUT OR RIP CUT  
TOP VIEW OF SAW  
FRONT OF SAW  
GUIDELINE  
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 17.  
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.  
NOTE: Thedistancefromthelineofcuttotheguidelineisthe  
amount you should offset the guideline.  
WIDTH OF CUT SCALE  
See Figure 18.  
A width of cut scale has been provided on the base of your  
saw. When making straight cross cuts or rip cuts, the scale  
can be used to measure up to four inches to the right side of  
the blade. It can be used to measure up to one inch to the left  
side of the blade.  
BLADE  
GUIDE NOTCH  
ALIGN OUTER BLADE GUIDE NOTCH ON SAW BASE WITH  
LINE OF CUT AS SHOWN WHEN MAKING CROSS CUTS OR  
RIP CUTS  
Fig. 17  
BASE  
ASSEMBLY  
50  
45  
300  
222  
3
2
1
4 5  
0
1
WIDTH OF  
CUT SCALE  
BLADE  
Fig. 18  
Page 15  
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OPERATION  
TO BEVEL CUT  
BEVEL  
SCALE  
BEVEL  
ADJUSTMENT  
KNOB  
The angle of cut of your saw may be adjusted to any desired  
setting between zero and 50°. NOTE: When making cuts at  
50°, blade should be set at full depth of cut.  
50  
45  
15  
0
Whenmaking45° bevelcuts, thereisanotchinthesawbase  
to help you line up the blade with the line of cut.  
See Figure 19.  
4
3
2
1
4 5  
0
1
Align your line of cut with the inner blade guide notch on the  
saw base when making 45° bevel cuts.  
Sincebladethicknessesvaryanddifferentanglesrequire  
differentsettings,alwaysmakeatrialcutinscrapmaterial  
along a guideline to determine how much you should  
offset the guideline on the board to be cut.  
BLADE  
GUIDE NOTCH  
4
4 5  
0
3
1
2
1
When making a bevel cut hold your saw firmly with both  
hands as shown in figure 20.  
Rest the front edge of the base on the workpiece. Depress  
the lock-off button and squeeze the switch trigger to start  
your saw. Always let the blade reach full speed, then guide  
your saw into the workpiece.  
GUIDELINE  
ALIGN INNER BLADE GUIDE NOTCH ON SAW BASE WITH  
WARNING:  
The blade coming in contact with the workpiece before it  
reaches full speed could cause saw to "kickback" toward  
you resulting in serious injury.  
LINE OF CUT AS SHOWN WHEN MAKING 45° BEVEL CUTS  
Fig. 19  
After you complete your cut release the trigger and allow the  
blade to come to a complete stop. After the blade has  
stopped, lift your saw from the workpiece.  
TO ADJUST BEVEL SETTING  
Remove battery pack from saw.  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
50  
LOWER  
BLADE  
GUARD  
45  
3
0
15  
3
2
1
5
4
Loosen bevel adjustment knob. See Figure 19.  
0
Fig. 20  
Raise motor housing end of saw until you reach desired  
angle setting on bevel scale. See Figure 19.  
Tighten bevel adjustment knob securely.  
WARNING:  
Attempting bevel cut without knob securely tightened can  
result in serious injury.  
Page 16  
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OPERATION  
POSITIVE 0° BEVEL STOP  
BLADE  
See Figure 21.  
CARPENTER'S  
SQUARE  
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.  
TO CHECK  
Remove battery pack from saw.  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
ADJUSTMENT  
SCREW  
Placeyoursawinanupsidedownpositiononworkbench.  
50  
45  
See Figure 21.  
30  
22  
15  
Using a carpenter's square, check squareness of saw  
BEVEL  
ADJUSTMENT  
KNOB  
0
4 5  
blade to the base of your saw.  
0
1
2
TO ADJUST  
Remove battery pack from saw.  
HEX NUT  
POSITIVE 0°  
BEVEL STOP  
Fig. 21  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
LOWER BLADE  
GUARD HANDLE  
Loosen bevel adjustment knob.  
Loosen hex nut securing adjustment screw.  
Turn screw and adjust base until square with saw blade.  
Tighten hex nut and bevel adjustment knob securely.  
LOWER  
BLADE GUARD  
50  
0
45  
5
30  
0
22  
2
WARNING:  
Attempting to make cuts without bevel adjustment knob  
securely tightened can result in serious injury.  
Fig. 22  
POCKET CUT  
frontofthebaseflatagainsttheworkpiecewiththerearofthe  
handle raised so the blade does not touch the workpiece.  
See Figure 22.  
TO POCKET CUT  
See Figure 22.  
Depressthelock-offbuttonandsqueezetheswitchtriggerto  
start your saw. Always let the blade reach full speed then  
slowly lower blade into the workpiece until base is flat  
against workpiece.  
WARNING:  
Always adjust bevel setting to zero before making a pocket  
cut. Attempting a pocket cut at any other setting can result  
inlossofcontrolofyoursawpossiblycausingseriousinjury.  
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 workpiece. Corners may then be cleared out  
with a hand saw or sabre saw.  
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.  
WARNING:  
Never tie the lower blade guard in a raised position.  
Leaving the blade exposed could lead to serious injury.  
Always raise the lower blade guard with the handle to  
avoid serious injury.  
Whileholdinglowerbladeguardbythehandle, firmlyrestthe  
Page 17  
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OPERATION  
TO RIP CUT  
OPTIONAL RIP GUIDE (EDGE GUIDE)  
See Figure 23.  
Useaguidewhenmakinglongorwideripcutswithyoursaw.  
An optional rip guide with a five inch 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 24.  
STRAIGHT  
EDGE  
5
45  
5
0
30  
22  
TO ASSEMBLE OPTIONAL RIP GUIDE  
See Figure 24.  
Remove battery pack from saw.  
C-CLAMPS  
WARNING:  
Failure to remove battery pack from saw could result in  
accidental starting causing possible serious personal  
injury.  
WORKPIECE  
ALTERNATE METHOD  
FOR RIP CUTTING  
Fig. 23  
Place rip guide through holes in saw base as shown in  
figure 24.  
Adjust rip guide to the width needed.  
Tighten rip guide screw (wing 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  
cutwithoutpinchingtheblade.Theguidingedgeofworkpiece  
must be straight for your cut to be straight. Use caution to  
prevent the blade from binding in the cut.  
RIP  
GUIDE SCREW  
(WING SCREW)  
50  
45  
30  
22  
5
4
3
2
1
RIP GUIDE  
(EDGE GUIDE)  
0
PLACE RIP  
GUIDE THRU HOLES  
Fig. 24  
Page 18  
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MAINTENANCE  
DO NOT abuse power tools. Abusive practices can damage  
tool as well as workpiece.  
WARNING:  
When servicing, use only identical replacement parts.  
Use of any other part may create a hazard or cause  
product damage.  
WARNING:  
Do not attempt to modify this tool or create accessories  
notrecommendedforusewiththistool.Anysuchalteration  
or modification is misuse and could result in a hazardous  
condition leading to possible serious personal injury.  
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.  
BATTERIES  
BATTERY PACK REMOVAL AND PREPARATION  
FOR RECYCLING  
Your saw's battery pack is equipped with nickel-cadmium  
rechargeablebatteries.Lengthofservicefromeachcharging  
will depend on the type of work you are doing.  
Y
To preserve natural resources, please  
recycle or dispose of batteries properly.  
C
C
L
E
E
R B R C  
The batteries in this tool have been designed to provide  
maximum trouble free life. However, like all batteries, they  
will eventually wear out. DO NOT disassemble battery pack  
and attempt to replace the batteries. Handling of these  
batteries, especially when wearing rings and jewelry, could  
result in a serious burn.  
This product contains nickel-cadmium  
batteries. Local, state or federal laws may  
prohibit disposal of nickel-cadmium  
batteries in ordinary trash.  
1
7
.
N i C d  
8
83  
0
0
8
.
.
8
2
Consult your local waste authority for information regarding  
available recycling and/or disposal options.  
To obtain the longest possible battery life, we suggest the  
following:  
WARNING:  
Store and charge your batteries in a cool area.  
Temperaturesaboveorbelownormalroomtemperature  
will shorten battery life.  
Upon removal, cover the battery pack's terminals with  
heavy duty adhesive tape. Do not attempt to destroy or  
disassemblebatterypackorremoveanyofitscomponents.  
Nickel-cadmium batteries must be recycled or disposed  
of properly. Also, never touch both terminals with metal  
objects and/or body parts as short circuit may result.  
Keep away from children. Failure to comply with these  
warnings could result in fire and/or serious injury.  
Neverstorebatteriesinadischargedcondition.Recharge  
them immediately after they are discharged.  
All batteries gradually lose their charge. The higher the  
temperature the quicker they lose their charge. If you  
store your tool for long periods of time without using it,  
recharge the batteries every month or two. This practice  
will prolong battery.  
Page 19  
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OPERATOR'S MANUAL  
5-1/2 in. CORDLESS CIRCULAR SAW  
MODEL NO. R10631  
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 for your nearest Ryobi  
complete list of Authorized Service Centers.  
MODEL NO. AND SERIAL NO.  
The model number of this tool will be found on a plate attached to the motor housing.  
Please record the model number and serial number in the space provided below.  
HOW TO ORDER REPAIR PARTS  
WHEN ORDERING REPAIR PARTS,  
ALWAYS GIVE THE FOLLOWING INFORMATION:  
MODEL NUMBER R10631  
SERIAL NUMBER  
RYOBI TECHNOLOGIES, INC.  
1428 Pearman Dairy Road  
Anderson, SC 29622  
Post Office Box 1207  
Anderson, SC 29622-1207  
Phone 1-800-525-2579  
972000-697  
7-01  
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0
1
2
3
4
5
1
0
4 5  
1
0
50  
5
45  
300  
22.5  
2
4
3
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