OPERATOR’S MANUAL
8-1/4 in., 18 Volt Cordless
Compound Miter Saw
P550
R
O
T
A
T
I
O
NN
5
4
2
6
1
3
0
3
5
.
.
2
2
2
2
5
1
1
5
1
..
5
2
22
0
33
2
.
3
5
4
Your miter saw has been engineered and manufactured to Ryobi’s high standard 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 Ryobi product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
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GENERAL SAFETY RULES
nDo not overreach. Keep proper footing and balance
WARNING!
at all times. Proper footing and balance enable better
control of the tool in unexpected situations.
READ AND UNDERSTAND ALL INSTRUCTIONS. Fail-
ure to follow all instructions listed below, may result in
electric shock, fire and/or serious personal injury.
nUse safety equipment. Always wear eye protection.
Dust mask, non-skid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
nDo not wear loose clothing or jewelry. Contain long
hair. Loose clothes, jewelry, or long hair can be drawn
into air vents.
SAVE THESE INSTRUCTIONS
WORK AREA
nDo not use on a ladder or unstable support. Stable
footing on a solid surface enables better control of the
tool in unexpected situations.
nKeep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
nDo 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.
nKeep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
TOOL USE AND CARE
nUse clamps or other practical way to secure and sup-
port the workpiece to a stable platform. Holding the
work by hand or against your body is unstable and may
lead to loss of control.
nDo 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.
nDo 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.
nDisconnect 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.
nStore idle tools out of reach of children and other
untrained persons. Tools are dangerous in the hands
of untrained users.
nWhen 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.
ELECTRICAL SAFETY
nA 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.
nUse battery operated tool only with specifically
designated battery pack. Use of any other batteries may
create a risk of fire.
nUse battery only with charger listed.
MODEL BATTERY PACK (P100) CHARGER (P110)
P550
130255004
1423701, 140237023
or 140237021
nDo not abuse the cord. Never use the cord to carry
the charger. Keep cord away from heat, oil, sharp
edges, or moving parts. Replace damaged cords
immediately. Damaged cords may create a fire.
PERSONAL SAFETY
nMaintain 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.
nCheck 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.
nUse 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.
n Keep the tool and its handle dry, clean and free from
oil and grease. Always use a clean cloth when clean-
ing. Never use brake fluids, gasoline, petroleum-based
products, or any strong solvents to clean your tool. Fol-
lowing this rule will reduce the risk of loss of control and
deterioration of the enclosure plastic.
nStay 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.
nDress 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.
nAvoid 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.
nRemove 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.
3
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GENERAL SAFETY RULES
nWhen servicing a tool, use only identical replacement
SERVICE
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to fol-
low Maintenance Instructions may create a risk of shock
or injury.
nTool service must be performed only by qualified re-
pair personnel. Service or maintenance performed by
unqualified personnel may result in a risk of injury.
SPECIFIC SAFETY RULES
nHold tool by insulated gripping surfaces when per- nUse this saw to cut wood, wood products and some
forming an operation where the cutting tool may con-
tact hidden wiring. Contact with a “live” wire will also
make exposed metal parts of the tool “live” and shock
the operator.
plastics only. Do not cut metals, ceramics or masonry
products.
nDo not charge battery tool in a damp or wet
location. Following this rule will reduce the risk of electric
shock.
nKnow 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.
nFor 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.
nAlways 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.
nUnder 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.
nProtect your lungs. Wear a face or dust mask if the
operation is dusty. Following this rule will reduce the
risk of serious personal injury.
nProtect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will nTHIS TOOL should have the following markings:
reduce the risk of serious personal injury.
a)
b) Keep hands out of path of saw blade
c) Do not operate saw without guards in place.
d) Do not perform any operation freehand.
Wear eye protection.
nBattery 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.
e)
f)
Never reach around saw blade.
Turn off tool and wait for saw blade to stop before
moving workpiece or changing settings.
nDo not place battery tools or their batteries near fire
or heat. This will reduce the risk of explosion and pos-
sibly injury.
g) Disconnect power (or unplug tool as applicable)
before changing blade or servicing.
nNever use a battery that has been dropped or
received a sharp blow. A damaged battery is subject
to explosion. Properly dispose of a dropped or damaged
battery immediately.
h) No load speed.
nALWAYS carry the tool only by the carrying handle.
nIF CARRYING THE BATTERY TOOL AT YOUR SIDE,
make sure it is not running and your finger is not on the
switch. Avoid accidental starting.
nBatteries 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.
nSAVE THESE INSTRUCTIONS. Refer to them
frequently and use to instruct other users. If you loan
someone this tool, loan them these instructions also.
4
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SAFETY RULES FOR CHARGER
nAn extension cord should not be used unless
WARNING!
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:
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all instructions listed below, may result in
electric shock, fire and/or serious personal injury.
a. That pins on plug of extension cord are the
same number, size and shape as those of
plug on charger.
nBefore 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.
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:
CAUTION:
Cord Length (Feet)
Cord Size (AWG)
25’
16
50’
16
100’
16
To reduce the risk of electric shock or damage to
the charger and battery, charge only nickel-cadmium
rechargeable batteries as specifically designated on your
charger. Other types of batteries may burst, causing per-
sonal injury or damage.
NOTE: AWG = American Wire Gauge
nDo 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.
nDo not use charger outdoors or expose to wet or damp
conditions. Water entering charger will increase the risk
of electric shock.
nDo 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.
nUse 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.
nDo 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.
nUnplug charger from outlet before attempting
any maintenance or cleaning to reduce the risk of
electric shock.
nDo 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.
nDisconnect 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.
nMake 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.
nRisk of electric shock. Do not touch uninsulated portion
of output connector or uninsulated battery terminal.
nSave 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.
nKeep cord and charger from heat to prevent
damage to housing or internal parts.
nDo not let gasoline, oils, petroleum-based products,
etc. come in contact with plastic parts. They contain
chemicals that can damage, weaken, or destroy plastic.
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.
5
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SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpreta-
tion of these symbols will allow you to operate the tool better and safer.
SYMBOL
NAME
DESIGNATION/EXPLANATION
V
Volts
Voltage
Current
A
Hz
W
Amperes
Hertz
Frequency (cycles per second)
Watt
Power
min
Minutes
Time
Alternating Current
Type of current
Direct Current
Type or a characteristic of current
Rotational speed, at no load
n
No Load Speed
o
Class II Construction
Per Minute
Double-insulated construction
Revolutions, strokes, surface speed, orbits etc., per minute
.../min
Do not expose to rain or use in damp locations.
Wet Conditions Alert
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Read The Operator’s Manual
Always wear safety goggles or safety glasses with side shields,
or a full face shield when operating this product.
Eye Protection
Safety Alert
Precautions that involve your safety.
Failure to keep your hands away from the blade will result in
serious personal injury.
No Hands Symbol
Failure to keep your hands away from the blade will result in
serious personal injury.
No Hands Symbol
No Hands Symbol
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.
No Hands Symbol
Hot Surface
To reduce the risk of injury or damage, avoid contact with any
hot surface.
6
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SYMBOLS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL
SIGNAL
MEANING
DANGER:
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
WARNING:
Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
CAUTION:
CAUTION:
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
WARNING:
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 servic-
ing, use only identical replacement parts.
To avoid serious personal injury, do not attempt to use
this product until you read thoroughly and understand
completely the operator’s manual. Save this operator’s
manual and review frequently for continuing safe opera-
tion and instructing others who may use this product.
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, or a full face shield when needed. 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
7
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GLOSSARY OF TERMS
Anti-Kickback Pawls (radial arm and table saws)
Non-Through Cuts
A devise which, when properly installed and maintained,
is designed to stop the workpiece from being kicked back
toward the front of the saw during a ripping operation.
Any cutting operation where the blade does not extend
completely through the thickness of the workpiece.
Push Blocks (for jointer planers)
Arbor
Device used to feed the workpiece over the jointer planer
cutterhead during any operation. This aid helps keep the
operator’s hands well away from the cutterhead.
The shaft on which a blade or cutting tool is mounted.
Bevel Cut
A cutting operation made with the blade at any angle other
than 90° to the table surface.
Push Blocks and Push Sticks (for table saws)
Devices used to feed the workpiece through the saw blade
during cutting operations. A push stick (not a push block)
should be used for narrow ripping operations. These aids
help keep the operator’s hands well away from the blade.
Chamfer
A cut removing a wedge from a block so the end (or part of
the end) is angled rather than at 90°.
Pilot Hole (drill presses)
A small hole drilled in a workpiece that serves as a guide for
drilling large holes accurately.
Compound Cut
A cross cut made with both a miter and a bevel angle.
Crosscut
Resaw
A cutting or shaping operation made across the grain or the
width of the workpiece.
A cutting operation to reduce the thickness of the workpiece
to make thinner pieces.
Cutterhead (planers and jointer planers)
A rotating cutterhead with adjustable blades or knives. The
blades or knives remove material from the workpiece.
Resin
A sticky, sap-based substance that has hardened.
Revolutions Per Minute (RPM)
The number of turns completed by a spinning object in one
minute.
Dado Cut
A non-through cut which produces a square-sided notch or
trough in the workpiece (requires a special blade).
Ripping or Rip Cut
Featherboard
A cutting operation along the length of the workpiece.
A device used to help control the workpiece by guiding
it securely against the table or fence during any ripping
operation.
Riving Knife/Spreader/Splitter (table saws)
A metal piece, slightly thinner than the blade, which helps
keep the kerf open and also helps to prevent kickback.
FPM or SPM
Feet per minute (or strokes per minute), used in reference
to blade movement.
Saw Blade Path
The area over, under, behind, or in front of the blade. As it
applies to the workpiece, that area which will be or has been
cut by the blade.
Freehand
Performing a cut without the workpiece being guided by a
fence, miter gauge, or other aids.
Set
The distance that the tip of the saw blade tooth is bent (or
Gum
set) outward from the face of the blade.
A sticky, sap-based residue from wood products.
Snipe (planers)
Heel
Depression made at either end of a workpiece by cutter
Alignment of the blade to the fence.
blades when the workpiece is not properly supported.
Kerf
The material removed by the blade in a through cut or the
Through Sawing
slot produced by the blade in a non-through or partial cut.
Any cutting operation where the blade extends completely
through the thickness of the workpiece.
Kickback
A hazard that can occur when the blade binds or stalls,
Throw-Back
throwing the workpiece back toward operator.
The throwing back of a workpiece usually caused by the
workpiece being dropped into the blade or being placed
inadvertently in contact with the blade.
Leading End
The end of the workpiece pushed into the tool first.
Workpiece or Material
The item on which the operation is being done.
Miter Cut
A cutting operation made with the workpiece at any angle
to the blade other than 90°.
Worktable
Surface where the workpiece rests while performing a
cutting, drilling, planing, or sanding operation.
8
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FEATURES
PRODUCT SPECIFICATIONS
Cutting Capacity with Miter at 0°/Bevel 0°:
5-1/2 in. (wide) x 2-1/16 in. (tall)
Blade Arbor ...............................................................5/8 in.
Blade Diameter.......................................................8-1/4 in.
No Load Speed ..................................................2,000/min.
Charger Input ...................................120 V, 60 Hz, AC only
Charger Rate .............................................................1 hour
Motor..................................................................18 Volt DC
Tool Weight .............................................................. 19 lbs.
Maximum Cutting Capacity with Miter at 45°/Bevel 0°:
3-3/4 in. (wide) x 2-1/16 in. (tall)
Maximum Cutting Capacity with Miter at 0°/Bevel 45°:
5-1/2 in. (wide) x 1-1/2 in. (tall)
Maximum Cutting Capacity with Miter at 45°/Bevel 45°:
3-3/4 in. (wide) x 1-1/2 in. (tall)
CARRYING
HANDLE
SAW ARM
SPINDLE LOCK
BUTTON
SWITCH
LOCK
DUST BAG
UPPER
BLADE GUARD
DUST GUIDE
SWITCH
TRIGGER
R
O
T
A
T
I
O
NN
LOWER BLADE GUARD
BEVEL
LOCK KNOB
“NO HANDS
ZONE” LABEL
BEVEL
SCALE
5
4
2
6
1
3
0
3
FENCE
55
.
2
2
2
THROAT PLATE
5
1
1
5
1
..
5
2
22
0
33
2
.
3
5
4
MITER
TABLE FRAME
“NO HANDS ZONE”
BOUNDARY LINE
MITER
SCALE
MITER TABLE
Fig. 1
KNOW YOUR COMPOUND MITER SAW
8-1/4 in. BLADE
See Figure 1.
A 8-1/4 in. saw blade is included with the compound miter
saw. It will cut materials up to 2-1/16 in. thick or 5-1/2 in.
wide, depending upon the thickness of the material and the
setting at which the cut is being made.
Before attempting to use this product, familiarize yourself
with all operating features and safety rules.
9
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FEATURES
CARRYING HANDLE
See Figure 2.
SAW ARM
For convenience when carrying or transporting the miter
saw from one place to another, a carrying handle has been
provided on top of the saw arm. To transport, turn off and
unplug the saw, then lower the saw arm and lock it in the
down position. Lock saw arm by depressing the lock pin.
UNLOCK
LOCK
MITER TABLE CLAMP
See Figure 3.
The miter table clamp securely locks the saw at desired
miter angles.
SPINDLE LOCK BUTTON
See Figure 4.
MITER TABLE
CLAMP
A spindle lock button has been provided for locking the
spindle which keeps the blade in the saw from rotating.
Depress and hold the lock button while installing, changing,
or removing blade.
(IN LOCKED
POSITION)
LOCK PIN
Fig. 3
SWITCH LOCK
SPINDLE LOCK
BUTTON
See Figure 5.
The switch trigger is equipped with a switch lock to reduce
the possibility of accidental starting.
To release switch lock feature:
nDepress the switch lock (1).
nWhile holding switch lock pushed in, depress the switch
trigger (2).
nRelease the switch lock (3).
nNOTE: The spring loaded lock will spring back into the
switch lock position when switch trigger is released.
CARRYING
HANDLE
Fig. 4
SWITCH
LOCK
1
3
2
LOCK PIN
SWITCH
TRIGGER
SAW ARM LOCKED
IN DOWN POSITION
Fig. 2
Fig. 5
10
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FEATURES
SWITCH TRIGGER
See Figure 6.
SWITCH
TRIGGER
To prevent unauthorized use of your compound miter saw,
remove battery pack and lock the switch in the off position.
To lock the switch, install a padlock through the hole in the
switch trigger. A lock with a shackle up to 9/32 in. diameter
maybeused.Whenthelockisinstalledandlocked,theswitch
is inoperable. Store the padlock key in another location.
POSITIVE STOPS ON MITER TABLE
Positivestopshavebeenprovidedat0°,22-1/2°,30°,and45°.
The 22-1/2°, 30° and 45° positive stops have been provided
on both the left and right side of the miter table.
PADLOCK
BEVEL LOCK KNOB
Fig. 6
The bevel lock knob securely locks your compound miter
sawatdesiredbevelangles.Positivestopadjustmentscrews
have been provided on each side of the saw arm. These
positive stop adjustment screws are for making fine adjust-
ments at 0° and 45°.
ELECTRIC BRAKE
An electric brake has been provided to quickly stop blade
rotation after the switch is released.
SELF-RETRACTING LOWER BLADE GUARD
FENCE
The lower blade guard is made of shock-resistant, see-
through plastic that provides protection from each side of
the blade. It retracts over the upper blade guard as the saw
is lowered into the workpiece.
Thefenceonyourcompoundmitersawhasbeenprovidedto
hold your workpiece securely against when making cuts.
TOOLS NEEDED
The following tools are needed for making adjustments or installing the blade:
COMBINATION WRENCH (2)
17 mm ,10 mm
PHILLIPS SCREWDRIVER
COMBINATION
SQUARE
FRAMING SQUARE
Fig. 7
11
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LOOSE PARTS
The following items are included with the tool:
nWork Clamp
n8-1/4 in. Carbide Tipped Saw Blade
nDust Bag
nHex Key, 5 mm
nHex Key, 6 mm
nDust Guide
nOperator’s Manual (Not Shown)
nBlade Wrench
BLADE
WRENCH
DUST
GUIDE
HEX KEY
6 mm
DUST
BAG
R
O
T
A
I
O
HEX KEY
5 mm
SAW
BLADE
WORK
CLAMP
Fig. 8
WARNING:
The use of attachments or accessories not listed might be hazardous and could cause serious personal injury.
12
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ASSEMBLY
UNPACKING
This product requires assembly.
MOUNTING HOLES
See Figure 9.
nCarefully lift the saw from the carton by the carrying
handle and the saw base, and place it on a level work
surface.
WARNING:
Always make sure the compound miter saw is securely
mounted to a workbench or an approved workstand.
Failure to heed this warning can result in serious
personal injury.
NOTE: This tool is heavy. To avoid back injury, lift with
your legs, not your back, and get help when needed.
nThis saw has been shipped with the saw arm secured in
the down position. To release the saw arm, push down
on the top of the saw arm, cut the tie-wrap, and pull out
on the lock pin.
The compound miter saw should be mounted to a firm
supporting surface such as a workbench. Four bolt holes
have been provided in the saw base for this purpose. Each
of the four mounting holes should be bolted securely using
3/8 in. machine bolts, lock washers, and hex nuts (not
included).Boltsshouldbeofsufficientlengthtoaccommodate
the saw base, lock washers, hex nuts, and the thickness of
the workbench. Tighten all four bolts securely.
nLift the saw arm by the handle. Hand pressure should
remain on the saw arm to prevent sudden rise upon
release of the tie wrap.
nInspect the tool carefully to make sure no breakage or
damage occurred during shipping.
nDo not discard the packing material until you have care-
The hole pattern for mounting to a workbench is shown in
figure 9. Carefully check the workbench after mounting to
make sure that no movement can occur during use. If any
tipping, sliding, or walking is noted, secure the workbench
to the floor before operating.
fully inspected and satisfactorily operated the tool.
nThe saw is factory set for accurate cutting. After
assembling it, check for accuracy. If shipping has
influenced the settings, refer to specific procedures
explained in this manual.
nIf any parts are damaged or missing, please call
1-800-525-2579 for assistance.
5 in.�
(12.7 cm)
WARNING:
18-5/8 in.�
1
(47.3 cm)
If any parts are missing, do not operate this tool until the
missing parts are replaced. Failure to do so could result
in possible serious personal injury.
9-3/4”�
8-5/8 in.�
(21.9 cm)
7/16 in. (11 mm)�
7/16” DIA. HOLE
Dia. Hole
5 in.�
(12.7 cm)
WARNING:
14-7/16 in.�
(36.7 cm)
4-3/4 in.�
3-3/4”�
4-3/4 in.�
(12 cm)
Do not attempt to modify this tool or create accesso-
ries not recommended for use with this tool. Any such
alteration or modification is misuse and could result in a
hazardous condition leading to possible serious personal
injury.
(12 cm)
24 in.�
(60.96 cm)
Fig. 9
WARNING:
To prevent accidental starting that could cause serious
personal injury, always remove the battery pack from the
tool when assembling parts.
13
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ASSEMBLY
DUST GUIDE
See Figure 10.
EXHAUST
PORT
nRemove the battery pack from the tool.
nPlace the dust guide (end marked INSERT) over the
exhaust port in the upper blade guard. Turn the guide
so the open end is facing down or towards the rear of
the saw.
DUST BAG
See Figure 11.
DUST
GUIDE
Removethebatterypackfromthetool.Adustbagisprovided
for use on this miter saw. It fits over the dust guide on the
upper blade guard. To install, squeeze the two metal clips to
open the mouth of the bag and slide it on to the dust guide.
Release the clips. The metal ring in the bag should lock in
between the grooves on the dust guide.
R
O
T
A
T
I
O
N
Fig. 10
To remove the dust bag for emptying, simply reverse the
above procedure.
DUST
BAG
WORK CLAMP
See Figure 12.
METAL
CLIPS
WARNING:
In some operations, the work clamp assembly may in-
terfere with the operation of the blade guard assembly.
Always make sure there is no interference with the blade
guard prior to beginning any cutting operation to reduce
the risk of serious personal injury.
EXHAUST
PORT
The work clamp provides greater control by clamping the
workpiece to the fence or the saw table. It also prevents
the workpiece from creeping toward the blade. This is very
helpful when cutting compound miters.
R
O
T
A
T
I
O
N
Depending on the cutting operation and the size of the
workpiece, it may be necessary to use a C-clamp instead
of the work clamp to secure the workpiece prior to making
the cut.
Fig. 11
R
O
T
A
T
I
O
N
To install the work clamp:
nPlace the shaft of the work clamp in either hole on the
saw table base.
nRotate the knob on the work clamp to move it in or out
as needed.
5
4
2
6
.
1
3
0
3
5
.
2
2
5
1
WARNING:
5
1
.5
2
2
When using any clamp with a stop block, install the clamp
on the same side as the stop block. This will eliminate
the possibility of trapping the workpiece, resulting in the
blade and workpiece kicking up. Failure to heed this
warning can result in serious personal injury.
0
3
2
.6
1
3
5
4
WORK CLAMP
KNOB
Fig. 12
14
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ASSEMBLY
TO INSTALL BLADE
See Figures 13 - 16.
BLADE BOLT
COVER
PHILLIPS SCREW
WARNING:
A 8-1/4 in. blade is the maximum blade capacity of the
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 guards,
while thicker blades will prevent the blade bolt from se-
curing the blade on the spindle. Either of these situations
could result in a serious accident and can cause serious
personal injury.
R
O
T
A
T
I
O
N
nRemove the battery pack from the tool.
nPush down on the saw arm and pull out the lock pin to
release saw arm. Raise saw arm to its full raised position.
Be cautious, saw arm is spring loaded to raise.
5
4
2
6
.
1
3
0
3
nLoosen the phillips screw on the blade bolt cover until
5
.
2
2
5
1
blade bolt cover can be raised. See Figure 13.
5
1
nGently raise the lower blade guard bracket, releasing
lower blade guard from notch so that lower blade guard
and blade bolt cover can be rotated up and back to
expose the blade bolt. See Figure 14.
.5
2
2
0
3
2
.6
1
3
5
4
nDepress the spindle lock button and rotate the blade bolt
until the spindle locks. See Figure 16.
Fig. 13
nUsing the blade wrench provided, loosen and remove the
blade bolt.
LOWER BLADE
GUARD
NOTE: The blade bolt has left hand threads. Turn blade
bolt clockwise to loosen.
nRemove outer blade washer. Do not remove inner blade
LOWER
washer.
BLADE
GUARD
nWipe a drop of oil onto inner blade washer and outer
BRACKET
blade washer where they contact the blade.
NOTCH
WARNING:
If inner blade washer has been removed, replace it before
placing blade on spindle. Failure to do so could cause an
accident since blade will not tighten properly.
PHILLIPS
SCREW
nFit saw blade inside lower blade guard and onto spindle.
The blade teeth point downward at the front of saw as
shown in figure 15.
BLADE BOLT
Fig. 14
CAUTION:
Always install the blade with the blade teeth and the arrow
printed on the side of the blade pointing down at the front
of the saw. The direction of blade rotation is also stamped
with an arrow on the upper blade guard.
15
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ASSEMBLY
nReplace outer blade washer. The double “D” flats on the
BLADE BOLT
COVER
LOWER BLADE
GUARD
blade washers align with the flats on the spindle.
nDepress spindle lock button and replace blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt counterclockwise to tighten.
nUsing the blade wrench provided, tighten blade bolt
securely.
nRemove the blade wrench and store it in a safe place for
future use.
nReplace the lower blade guard and blade bolt
cover.
nRetighten phillips screw securing blade bolt cover.
PHILLIPS
SCREW
Tighten screw securely. See Figure 15.
WARNING:
FLAT (S)
To prevent damage to the spindle lock, always allow
motor to come to a complete stop before engaging
spindle lock. Make sure the spindle lock button is not
engaged before attaching battery.
ON SPINDLE
INNER BLADE
WASHER WITH
DOUBLE "D" FLATS
TO
LOOSEN
R
O
T
A
T
I
N
O
TO REMOVE BLADE
TO
TIGHTEN
BLADE
See Figures 13 - 16.
nRemove the battery pack from the tool.
BLADE
BOLT
OUTER BLADE WASHER
WITH DOUBLE “D” FLATS
nLoosen the phillips screw on the blade bolt cover until
blade bolt cover can be raised. See Figures 13 - 15.
nGently raise the lower blade guard bracket,
releasing lower blade guard from notch so that lower
blade guard and blade bolt cover can be rotated up and
back to expose the blade bolt. See Figure 14.
Fig. 15
SPINDLE LOCK
BUTTON
nDepress the spindle lock button and rotate the blade bolt
until the spindle locks. See Figure 16.
nUsing the blade wrench provided, loosen and remove the
blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt clockwise to loosen.
nRemove outer blade washer. The blade can now be
removed.
Fig. 16
16
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ASSEMBLY
FENCE
WARNING:
FRAMING
SQUARE
Make sure the spindle lock button is not engaged
before reconnecting saw into power source. Never
engage spindle lock button when blade is rotating.
NOTE: Many of the illustrations in this manual show only
portionsofthecompoundmitersaw.Thisisintentionalsothat
we can clearly show points being made in the illustrations.
Never operate the saw without all guards securely in
place and in good operating condition.
4
5
5
4
31.62
31.62
3
0
0
3
22.5
22.5
5
1
SQUARING THE MITER TABLE TO THE
FENCE
MITER TABLE
ZERO CLEARANCE
THROAT PLATE
See Figures 17 - 20.
nRemove the battery pack from the tool.
nPush down on the saw arm and pull out the lock pin to
release the saw arm.
VIEW OF MITER TABLE NOT SQUARE WITH
FENCE, ADJUSTMENTS ARE REQUIRED
Fig. 18
nRaise saw arm to its full raised position.
nLift the miter table clamp.
nRotate the miter table until the pointer is positioned at 0°.
nPush the miter table clamp back down.
FENCE
FRAMING
SQUARE
nLay a framing square flat on the miter table. Place one
leg of the square against the fence. Place the other leg of
the square beside the zero clearance throat plate in the
miter table. The edge of the square and the zero clear-
ance throat plate in the miter table should be parallel as
shown in figure 17.
4
5
5
4
nIf the edge of the framing square and the zero clearance
throat plate in the miter table are not parallel as shown
in figures 18 and 19, adjustments are needed.
31.62
31.62
3
0
0
3
22.5
22.5
5
1
nUsing the 6 mm hex key, loosen the socket head screws
securing the fence. See Figure 20. Adjust the fence left
or right until the framing square and throat plate are
parallel.
nRetighten the screws securely and recheck the fence-to-
table alignment.
ZERO CLEARANCE
THROAT PLATE
MITER TABLE
VIEW OF MITER TABLE NOT SQUARE WITH
FENCE, ADJUSTMENTS ARE REQUIRED
Fig. 19
6 mm SOCKET
HEAD SCREW(S)
FENCE
MITER
TABLE CLAMP
FRAMING
SQUARE
4
5
5
4
31.62
31.62
3
0
0
3
22.5
5
1
4
5
ZERO CLEARANCE
THROAT PLATE
31.6
31.6
30
30
MITER TABLE
22.
5
22.5
15
15
0
VIEW OF MITER TABLE SQUARE WITH FENCE
FENCE
Fig. 20
Fig. 17
17
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ASSEMBLY
SQUARING THE SAW BLADE TO THE FENCE
See Figures 21 - 24.
FENCE
nRemove the battery pack from the tool.
nPull the saw arm all the way down and engage the lock
pin to hold the saw arm in transport position.
nLift the miter table clamp.
nRotate the miter table until the pointer is positioned
5
5
4
at 0°.
2
6
.
1
3
0
3
5
.
2
2
5
1
nPush the miter table clamp back down.
4
0
31
.6
3
0
2
15
22.5
nLay a framing square flat on the miter table. Place one
leg of the square against the fence. Slide the other leg of
the square against the flat part of the saw blade.
BLADE
FRAMING SQUARE
MITER TABLE
NOTE: Make sure that the square contacts the flat part
of the saw blade, not the blade teeth.
VIEW OF BLADE NOT SQUARE WITH
FENCE, ADJUSTMENTS ARE REQUIRED
nThe edge of the square and the saw blade should be
Fig. 22
parallel as shown in figure 21.
nIf the front or back edge of the saw blade angles away
from the square as shown in figures 22 and 23, adjust-
ments are needed.
FENCE
nUsing the 6 mm hex key provided, loosen the socket
head screws that secure the mounting bracket to the
miter table. See Figure 24.
nRotate the mounting bracket left or right until the saw
5
5
4
2
6
.
1
3
blade is parallel with the square.
0
3
5
.
2
2
5
1
4
5
0
31
.6
3
0
nRetighten the screws securely and recheck the blade-to-
2
15
22.5
fence alignment.
BLADE
FRAMING SQUARE
MITER TABLE
VIEW OF BLADE NOT SQUARE WITH
FENCE, ADJUSTMENTS ARE REQUIRED
FENCE
Fig. 23
5
5
4
2
6
.
1
3
0
3
5
.
2
2
5
1
4
5
0
31
.6
3
0
2
15
22.5
R
O
T
A
T
I
O
NN
BLADE
FRAMING SQUARE
VIEW OF BLADE SQUARE WITH FENCE
MITER TABLE
6 mm SOCKET
HEAD SCREW(S)
5
4
5
.
.
2
2
2
2
5
1
1
Fig. 21
5
1
..
5
2
22
0
33
2
.
3
5
4
6 mm
HEX KEY
MOUNTING
BRACKET
MITER TABLE
Fig. 24
18
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ASSEMBLY
SQUARING THE BLADE TO THE MITER TABLE
See Figures 25 - 28.
FENCE
nRemove the battery pack from the tool.
nPull the saw arm all the way down and engage the lock
pin to hold the saw arm in transport position.
5
5
nLift the miter table clamp.
4
2
6
.
1
3
0
3
5
.
2
2
5
1
nRotate the miter table until the pointer is positioned at 0°.
nPush the miter table clamp back down.
nLoosen bevel lock knob and set saw arm at 0° bevel
(blade set 90° to miter table). Tighten bevel lock knob.
nPlace a combination square against the miter table and
the flat part of saw blade.
4
0
31
.6
3
0
2
15
22.5
BLADE
MITER TABLE
COMBINATION
SQUARE
VIEW OF BLADE NOT SQUARE WITH MITER
TABLE, ADJUSTMENTS ARE REQUIRED
NOTE: Make sure that the square contacts the flat part
of the saw blade, not the blade teeth.
Fig. 26
nRotate the blade by hand and check the blade-to-table
alignment at several points.
FENCE
nThe edge of the square and the saw blade should be
parallel as shown in figure 25.
nIf the top or bottom of the saw blade angles away from
the square as shown in figures 26 and 27, adjustments
are needed.
5
5
4
2
6
.
1
3
0
3
5
.
2
2
nUsing a 10 mm wrench or adjustable wrench, loosen the
lock nut securing positive stop adjustment screw. Also
loosen bevel lock knob.
5
1
4
0
31
.6
3
0
2
15
22.5
BLADE
MITER TABLE
nAdjust positive stop adjustment screw to bring
saw blade into alignment with the square. See Figure 28.
nRetighten bevel lock knob. Next, retighten lock nut
securing the positive stop adjustment screw. Recheck
blade-to-table alignment.
COMBINATION
SQUARE
VIEW OF BLADE NOT SQUARE WITH MITER
TABLE, ADJUSTMENTS ARE REQUIRED
Fig. 27
NOTE: The above procedure can be used to check blade
squareness of the saw blade to the miter table at both 0°
and 45° angles.
MITER TABLE
POSITIVE STOP
ADJUSTMENT SCREW
FOR 0° ANGLES
3
0
1
5
FENCE
5
5
4
2
6
.
1
3
0
3
5
.
2
2
5
1
4
0
31
.6
3
0
2
15
22.5
BLADE
MITER TABLE
LOCK NUT(S)
COMBINATION
SQUARE
VIEW OF BLADE SQUARE WITH MITER TABLE
POSITIVE STOP
ADJUSTMENT SCREW
FOR 45° ANGLES
Fig. 25
Fig. 28
19
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OPERATION
LED FUNCTIONS OF CHARGER
WARNING:
LED WILL BE ON TO INDICATE STATUS OF
CHARGER AND BATTERY PACK:
nRed LED on = Fast charging mode.
Do not allow familiarity with tools to make you care-
less. Remember that a careless fraction of a second is
sufficient to inflict serious injury.
nGreen LED on = Fully charged and in maintenance charge
mode.
WARNING:
nGreen LED on = When battery pack is inserted into
charger, indicates hot battery pack or that battery pack
is out of normal temperature range.
Always wear safety goggles or safety glasses with side
shields when operating tools. Failure to do so could re-
sult in objects being thrown into your eyes, resulting in
possible serious injury.
nYellow and Green LEDs on = Deeply discharged or
defective battery pack.
nNo LED on = Defective charger or battery pack.
CHARGING THE BATTERY PACK
WARNING:
The battery pack for this tool has been shipped in a low
charge condition to prevent possible problems. Therefore,
you should charge it until the green LED on the front of the
charger comes on.
Do not use any attachments or accessories not recom-
mended by the manufacturer of this tool. The use of at-
tachments or accessories not recommended can result
in serious personal injury.
NOTE: Batteries will not reach full charge the first time they
are charged. Allow several cycles (operation followed by
recharging) for them to become fully charged.
APPLICATIONS
You may use this tool for the following purposes:
nCrosscutting wood and plastic (Do not cut metals, ceram-
CHARGING A COOL BATTERY PACK
If battery pack is within normal temperature range, the red
LED on charger will come on.
ics or masonry products.)
nCrosscutting miters, joints, etc. for picture frames mold-
ings, door casings, and fine joinery
NOTE: If the charger does not charge the battery pack
undernormalcircumstances,returnboththebatterypackand
charger to your nearest Ryobi Authorized Service Center for
electrical check.
nBevel cutting and compound cutting
NOTE: The blade provided is fine for most wood cutting
operations, but for fine joinery cuts or cutting plastic, use
oneoftheaccessorybladesavailablefromthenearestRyobi
retail store.
nCharge the battery pack only with the charger provided.
nMake sure the power supply is normal household
voltage, 120 volts, 60 Hz, AC only.
WARNING:
nConnect the charger to the power supply.
Before starting any cutting operation, clamp or bolt the
compound miter saw to a workbench. Never operate the
miter saw on the floor or in a crouched position. Failure to
heed this warning can result in serious personal injury.
nPlace the battery pack in the charger aligning raised rib
on the battery pack with the groove in the charger.
nPress down on the battery pack to be sure contacts on
the battery pack engage properly with contacts in the
charger.
nNormally the red LED on charger will come on. This
CAUTION:
indicates the charger is in fast charging mode.
If at any point during the charging process none of the
LEDs are lit, remove the battery pack from the charger
to avoid damaging the product. DO NOT insert another
battery. Return the charger and battery to your nearest
service center for service or replacement.
nRed LED should remain on for approximately 1 hour
then the green LED will come on. Green LED on
indicates battery pack is fully charged and charger is
in maintenance charge mode.
NOTE: The green LED will remain on until the
battery pack is removed from the charger or charger is
disconnected from the power supply.
nIf both yellow and green LEDs come on, this indi-
cates a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
20
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OPERATION
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
TO REMOVE BATTERY PACK
See Figure 31.
nLocate latches on each side of the battery pack. Depress
nAfter normal usage, a minimum of 1 hour of charging time
the latches to release the battery pack from the tool.
is required to fully recharge battery pack.
nRemove the battery pack from the tool.
nThe battery pack will become slightly warm to the
touch while charging. This is normal and does not
indicate a problem.
CHARGER
GREEN LED
nDo not place the charger and battery pack in an area of
extreme heat or cold. They will work best at normal room
temperature.
NOTE: The charger and battery pack should be placed
in a location where the temperature is more than 50°F
but less than 100°F.
nWhen batteries become fully charged, unplug the
charger from power supply and remove the battery
pack.
RED LED
YELLOW LED
CHARGING A HOT BATTERY PACK
Fig. 29
When using the tool continuously, the batteries in the battery
pack will become hot. You should let a hot battery pack cool
down for approximately 30 minutes before attempting to
recharge. When the battery pack becomes discharged and
is hot, this will cause the green LED to come on instead of
the red LED. After 30 minutes, reinsert the battery pack in
the charger. If the green LED continues to remain on, return
batterypacktoyournearestRyobiAuthorizedServiceCenter
for checking or replacing.
BATTERY PACK SHOWN ATTACHED TO CHARGER
CHARGER
NOTE: This situation only occurs when continuous use of
the tool causes the batteries to become hot. It does not
occur under normal circumstances. Refer to “CHARGING
A COOL BATTERY PACK” for normal recharging of batter-
ies. 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 electrical check.
BATTERY
PACK
Fig. 30
DEPRESS LATCHES TO
RELEASE BATTERY PACK
LATCHES
After all parts have been assembled properly, the battery
pack can now be attached to tool.
TO INSTALL BATTERY PACK
See Figure 31.
nPlace battery pack in the saw. Align raised rib on battery
pack with groove inside saw.
nMake sure the latches on each side of the battery pack
snap in place and that the battery pack is secured in the
tool before beginning operation.
BATTERY
PACK
CAUTION:
When placing battery pack in the saw, be sure raised rib
on battery pack aligns with groove inside saw and latches
snap into place properly. Improper assembly of battery
pack can cause damage to internal components.
Fig. 31
21
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OPERATION
nGrasp the saw handle firmly, depress the switch lock,
CUTTING WITH YOUR COMPOUND
MITER SAW
then squeeze the switch trigger. Allow several seconds
for the blade to reach maximum speed.
nSlowly lower the blade into and through the auxiliary
fence.
WARNING:
nRelease the switch trigger and allow the blade to stop
When using a work clamp or C-clamp to secure your
workpiece, clamp workpiece on one side of the blade
only. The workpiece must remain free on one side of the
blade to prevent the blade from binding in workpiece. The
workpiece binding the blade will cause motor stalling and
kickback. This situation could cause an accident resulting
in possible serious personal injury.
rotating before raising the blade.
Repeat the above steps for the right side auxiliary fence
making a 45° right miter cut.
WARNING:
�
�
�
�
�
�
�
�
To avoid serious personal injury, always push the miter
table clamp back down before making a cut. Failure to
do so could result in movement of the miter table while
making a cut.
�
�
�
�
�
�
�
�
�
�
�
WARNING:
�
�
To avoid serious personal injury, keep hands outside
the no hands zone; at least 3 in. from blade. Never
perform any cutting operation freehand (without holding
workpiece against the fence). The blade could grab the
workpiece if it slips or twists.
�
�
��
�
�
�
�
�
��
�
�
�
�
AUXILIARY FENCE
Fig. 32
TO CUT SMALL MOLDING AND TRIM
FLAT HEAD/DRYWALL
SCREWS
See Figures 32 - 33.
When making compound or 90° miter cut on small mold-
ing or trim, it is necessary to install an auxiliary fence. The
auxiliary fence will hold small workpieces in place during
the cutting operation.
NOTE: Do not make a bevel cut through the auxiliary fence
unless you anticipate making compound cuts.
�
�
�
�
�
�
�
�
To make an auxiliary fence:
nUsing a piece of wood 1-1/2 in. thick, 2 in. wide, and
7-1/2 in. long, place the wood on the miter table against
the left side miter fence. The left end of the wood should
be even with the left end of the fence.
�
�
�
�
�
�
� �
�
�
�
�
�
�
nSecure the wood to the miter fence using flat head/drywall
screws. From the back of the saw, attach the screws
through the holes in the miter fence and into the wood.
��
�
�
�
�
�
�
�
�
�
�
��
�
�
�
�
�
��
�
�
�
�
nInstall a fully charged battery to the miter saw.
nLift the miter table clamp and rotate the miter table
until the pointer aligns with the 45° left mark on the miter
scale.
nPush the miter table clamp down to lock.
Fig. 33
22
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OPERATION
TO CROSSCUT
See Figure 34.
A crosscut is made by cutting across the grain of the
workpiece. A straight crosscut is made with the miter
table set at the 0° position. Miter crosscuts are made
with the miter table set at some angle other than zero.
nPull out the lock pin and lift saw arm to its full height.
nLift the miter table clamp.
nRotate the miter table until the pointer aligns with the
R
O
T
A
T
I
O
N
desired angle on the miter scale.
nPush the miter table clamp down to lock.
NOTE: You can quickly locate 0°, 22-1/2° left or right,
30° left or right, and 45° left or right by releasing the lock
plate as you rotate the control arm. The lock plate will
seat itself in one of the positive stop notches, located in
the miter table frame.
5
4
2
6
.
1
3
0
3
5
.
2
2
5
1
5
1
.5
2
2
0
3
2
.6
1
3
5
4
nPlace the workpiece flat on the miter table with one edge
securely against the fence. If the board is warped, place
the convex side against the fence. If the concave edge
of a board is placed against the fence, the board could
collapse on the blade at the end of the cut, jamming the
blade.
WORK CLAMP
nWhen cutting long pieces of lumber or molding, support
the opposite end of the stock with a roller stand or with
a work surface level with the saw table.
STRAIGHT
CROSSCUT
Fig. 34
nAlign cutting line on workpiece with edge of saw blade.
nGrasp the stock firmly with one hand and secure
it against the fence. Use the optional work clamp or a
C-clamp to secure the workpiece when possible.
nBefore turning on the saw, perform a dry run of the cutting
operation just to make sure that no problems will occur
when the cut is made.
nGrasp the saw handle firmly, depress the switch lock,
then squeeze the switch trigger. Allow several seconds
for the blade to reach maximum speed.
nSlowly lower the blade into and through the workpiece.
nRelease the switch trigger and allow the blade to stop
rotating before raising the blade out of workpiece. Wait
until the electric brake stops blade from turning before
removing the workpiece from the miter table.
23
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OPERATION
TO BEVEL CUT
See Figures 35 - 36.
INDICATOR
POINT
A bevel cut is made by cutting across the grain of the
workpiece with the blade angled to the workpiece. A
straight bevel cut is made with the miter table set at
the zero degree position and the blade set at an angle
between 0° and 45°.
nPull out the lock pin and lift saw arm to its full height.
3
0
1
5
nLift the miter table clamp.
nRotate the miter table until the pointer aligns with zero
on the miter scale.
SCALE
nPush the miter table clamp down to lock.
BEVEL
LOCK KNOB
NOTE: You can quickly locate zero on the scale. The
miter table can be seated in one of the built-in positive
stop notches located in the miter table frame.
MOUNTING
BRACKET
nLoosen the bevel lock knob and move the saw arm to the
left to the desired bevel angle.
nBevel angles can be set from 0° to 45°.
nAlign the indicator point with the desired angle.
Fig. 35
nOnce the saw arm has been set at the desired angle,
securely tighten the bevel lock knob.
nPlace the workpiece flat on the miter table with one edge
securely against the fence. If the board is warped, place
the convex side against the fence. If the concave edge
of a board is placed against the fence, the board could
collapse on the blade at the end of the cut, jamming the
blade.
BEVEL CUT
nWhen cutting long pieces of lumber or molding, support
the overhanging end(s) of the stock with a roller stand or
with a work surface level with the saw table.
nAlign the cutting line on the workpiece with the edge of
saw blade.
nGrasp the stock firmly with one hand and secure it against
the fence. Use the work clamp or a C-clamp to secure
the workpiece when possible.
5
4
2
6
.
1
3
0
3
nBefore turning on the saw, perform a dry run of the cutting
operation just to make sure that no problems will occur
when the cut is made.
5
.
2
2
5
1
5
1
.5
2
2
0
3
2
.6
1
3
5
4
nGrasp the saw handle firmly, depress the switch lock,
then squeeze the switch trigger. Allow several seconds
for the blade to reach maximum speed.
nSlowly lower the blade into and through the workpiece.
nRelease the switch trigger and allow the saw blade to stop
rotating before raising the blade out of workpiece. Wait
until the electric brake stops blade from turning before
removing the workpiece from miter table.
C-CLAMP
Fig. 36
n When cutting long pieces of lumber or molding, support
the opposite end of the stock with a roller stand or with
a work surface level with the saw table. See Figure 39.
n Align the cutting line on the workpiece with the edge of
saw blade.
24
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OPERATION
nGraspthestockfirmlywithonehandandsecureitagainst
the fence. Use the optional work clamp or a C-clamp to
secure the workpiece when possible. See Figure 36.
nBefore turning on the saw, perform a dry run of the cutting
operation just to make sure that no problems will occur
when the cut is made.
nGrasp the saw handle firmly, depress the switch lock,
then squeeze the switch trigger. Allow several seconds
for the blade to reach maximum speed.
nSlowly lower the blade into and through the workpiece.
nRelease the switch trigger and allow the saw blade to stop
rotating before raising the blade out of workpiece. Wait
until the electric brake stops blade from turning before
removing the workpiece from miter table.
�
�
�
�
COMPOUND
MITER CUT
�
�
TO COMPOUND MITER CUT
See Figure 37.
�
�
�
�
�
�
�
�
��
�
�
�
�
A compound miter cut is a cut made using a miter angle and
a bevel angle at the same time. This type of cut is used to
make picture frames, cut molding, make boxes with sloping
sides, and for certain roof framing cuts.
To make this type of cut the control arm on the miter table
must be rotated to the correct angle and the saw arm must
be tilted to the correct bevel angle. Care should always be
taken when making compound miter setups due to the
interaction of the two angle settings.
Fig. 37
C-CLAMP
nOnce the saw arm has been set at the desired angle,
securely tighten the bevel lock knob.
Adjustments of miter and bevel settings are interdependent
with one another. Each time you adjust the miter setting you
change the effect of the bevel setting. Also, each time you
adjust the bevel setting you change the effect of the miter
setting.
nRecheck miter angle setting. Make a test cut in scrap
material.
nPlace the workpiece flat on the miter table with one edge
securely against the fence. If the board is warped, place
the convex side against the fence. If the concave edge
of a board is placed against the fence, the board could
collapse on the blade at the end of the cut, jamming the
blade. See Figures 41 - 42.
It may take several settings to obtain the desired cut. The
firstanglesettingshouldbecheckedaftersettingthesecond
angle, since adjusting the second angle affects the first.
Once the two correct settings for a particular cut have been
obtained, always make a test cut in scrap material before
making a finish cut in good material.
nWhen cutting long pieces of lumber or molding, support
the opposite end of the stock with a roller stand or with
a work surface level with the saw table. See Figure 38.
nPull out the lock pin and lift saw arm to its full height.
nAlign the cutting line on the workpiece with the edge of
saw blade.
nLift the miter table clamp.
nRotate the miter table until the pointer aligns with zero
on the miter scale.
nPush the miter table clamp down to lock.
NOTE: You can quickly locate 0˚, 15˚, 22-1/2˚, left or right,
30˚ and 45˚ left or right by releasing the miter lock plate as
you rotate the control arm. The miter lock plate will seat
itself in one of the positive stop notches, located in miter
table frame.
nLoosen the bevel lock knob and move the saw arm to the
left to the desired bevel angle.
nBevel angles can be set from 0˚ to 45˚.
25
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OPERATION
nGrasp the stock firmly with one hand and secure it against
the fence. Use the optional work clamp or a C-clamp to
secure the workpiece when possible. See Figure 35.
nBefore turning on the saw, perform a dry run of the cutting
operation just to make sure that no problems will occur
when the cut is made.
nGrasp the saw handle firmly, depress the switch lock,
then squeeze the switch trigger. Allow several seconds
for the blade to reach maximum speed.
nSlowly lower the blade into and through the workpiece.
See Figures 35 - 36.
nRelease the switch trigger and allow the saw blade to stop
rotating before raising the blade out of workpiece. Wait
until the electric brake stops blade from turning before
removing the workpiece from miter table.
�
�
�
�
�
�
�
�
�
�
�
�
�
�
�
TO SUPPORT LONG WORKPIECES
See Figure 39.
Long workpieces need extra supports. Supports should be
placed along the workpiece so it does not sag. The support
should let the workpiece lay flat on the base of the saw and
work table during the cutting operation. Use the optional
work clamp or a C-clamp to secure the workpiece.
45° X 45° COMPOUND MITER CUT
Fig. 38
5
4
2
6
.
1
3
0
3
5
.
2
2
LONG WORKPIECE
5
1
5
1
.5
2
2
0
3
2
.6
1
3
5
4
WORKPIECE
SUPPORTS
Fig. 39
26
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OPERATION
CUTTING COMPOUND MITERS
To aid in making the correct settings, the compound angle setting chart below has been provided. Since compound cuts
are the most difficult to accurately obtain, trial cuts should be made in scrap material, and much thought and planning
made, prior to making the required cut.
NUMBER OF SIDES
PITCH
OF SIDE
4
5
6
7
8
9
10
M- 30.00°
B- 0.00°
M- 45.00° M- 36.00°
B- 0.00° B- 0.00°
M- 22.50°
B- 0.00°
M- 25.71°
B- 0.00°
M- 20.00° M- 18.00°
B- 0.00° B- 0.00°
0°
M- 22.42°
B- 1.91°
M- 17.94°
M- 19.93°
M- 44.89°
B- 3.53°
M- 35.90° M- 29.91° M- 25.63°
B- 2.94° B- 2.50° B- 2.17°
5°
10°
15°
20°
25°
30°
35°
40°
45°
B- 1.54°
B- 1.71°
M- 19.72°
M- 17.74°
M- 44.56° M- 35.58°
B- 7.05° B- 5.86°
M- 29.62° M- 25.37° M- 22.19°
B- 4.98° B- 4.32° B- 3.81°
B- 3.40°
B- 3.08°
M- 44.01° M- 35.06° M- 29.15°
B- 10.55° B- 8.75° B- 7.44°
M- 21.81° M- 19.37° M- 17.42°
B- 5.68° B- 5.08° B- 4.59°
M- 24.95°
B- 6.45°
M- 28.48°
B- 9.85°
M- 34.32°
B- 11.60°
M- 24.35° M- 21.27° M- 18.88° M- 16.98°
B- 8.53° B- 7.52° B- 6.72° B- 6.07°
M- 43.22°
B- 14.00°
M- 42.19° M- 33.36° M- 27.62° M- 23.56° M- 20.58° M- 18.26°
B- 17.39° B- 14.38° B- 12.20° B- 10.57° B- 9.31° B- 8.31°
M- 16.41°
B- 7.50°
M- 40.89° M- 32.18° M- 26.57° M- 22.64° M- 19.73° M- 17.50°
B- 20.70° B- 17.09° B- 14.48° B- 12.53° B- 11.03° B- 9.85°
M- 15.72°
B- 8.89°
M- 39.32°
B- 23.93°
M- 25.31°
B- 16.67°
M- 16.60°
B- 11.31°
M- 30.76°
B- 19.70°
M- 21.53° M- 18.74°
B- 14.41° B- 12.68°
M- 14.90°
B- 10.21°
M- 37.45° M- 29.10°
B- 27.03° B- 22.20°
M- 20.25° M- 17.60° M- 15.58°
B- 16.19° B- 14.24° B- 12.70°
M- 23.86°
B- 18.75°
M- 13.98°
B- 11.46°
M- 35.26° M- 27.19° M- 22.21° M- 18.80° M- 16.32° M- 14.43°
B- 30.00° B- 24.56° B- 20.70° B- 17.87° B- 15.70° B- 14.00°
M- 12.94°
B- 12.62°
M- 32.73°
B- 32.80°
M- 20.36°
B- 22.52°
M- 25.03°
B- 26.76°
M- 17.20° M- 14.91° M- 13.17° M- 11.80°
B- 19.41° B- 17.05° B- 15.19° B- 13.69°
50°
55°
60°
65°
70°
75°
80°
85°
90°
M- 18.32°
B- 24.18°
M- 11.79°
B- 16.27°
M- 29.84° M- 22.62°
B- 35.40° B- 28.78°
M- 15.44° M- 13.36°
B- 20.82° B- 18.27°
M- 10.56°
B- 14.66°
M- 19.96°
B- 30.60°
M- 13.54° M- 11.70° M- 10.31°
B- 22.07° B- 19.35° B- 17.23°
M- 26.57°
B- 37.76°
M- 16.10°
B- 25.66°
M- 9.23°
B- 15.52°
M- 13.71°
B- 26.95°
M- 7.82°
B -16.26°
M- 22.91° M- 17.07°
B- 39.86° B- 32.19°
M- 11.50° M- 9.93° M- 8.74°
B- 23.16° B- 20.29° B- 18.06°
M- 18.88° M- 13.95° M- 11.17° M- 9.35° M- 8.06° M- 7.10°
B- 41.64° B- 33.53° B- 28.02° B- 24.06° B- 21.08° B- 18.75°
M- 6.34°
B- 16.88°
M- 14.51° M- 10.65°
B- 43.08° B- 34.59°
M- 7.10° M- 6.12° M- 5.38°
B- 24.78° B- 21.69° B- 19.29°
M- 8.50°
B- 28.88°
M- 5.73°
B- 29.50°
M- 4.81°
B- 17.37°
M- 9.85° M- 7.19°
B- 44.14° B- 35.37°
M- 4.98°
B- 44.78°
M- 4.78° M- 4.11° M- 3.62° M- 3.23°
B- 25.30° B- 22.14° B- 19.68° B- 17.72°
M- 3.62°
B- 35.84°
M- 2.40° M- 2.07° M- 1.82°
B- 25.61° B- 22.41° B- 19.92°
M- 2.88°
B- 29.87°
M- 1.62°
B- 17.93°
M- 0.00° M- 0.00° M- 0.00° M- 0.00° M- 0.00° M- 0.00°
B- 36.00° B- 30.00° B- 25.71° B- 22.50° B- 20.00° B- 18.00°
M- 0.00°
B- 45.00°
Each B (Bevel) and M (Miter) Setting is Given to the Closest 0.005°.
COMPOUND-ANGLE SETTINGS FOR POPULAR STRUCTURES
27
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OPERATION
Whensettingthebevelandmiteranglesforcompoundmiters,
remember that the settings are interdependent; changing
one angle changes the other angle as well.
CUTTING CROWN MOLDING
The compound miter saw does an excellent job of cutting
crownmolding.Ingeneral,compoundmitersawsdoabetter
job of cutting crown molding than any other tool made.
Keep in mind that the angles for crown moldings are very
precise and difficult to set. Since it is very easy for these
angles to shift, all settings should first be tested on scrap
molding. Also most walls do not have angles of exactly 90°,
therefore, you will need to fine tune your settings.
In order to fit properly, crown molding must be compound
mitered with extreme accuracy.
The two contact surfaces on a piece of crown molding that
fit flat against the ceiling and the wall of a room are at angles
that, when added together, equal exactly 90°. Most crown
molding has a top rear angle (the section that fits flat against
the ceiling) of 52° and a bottom rear angle (the section that
fits flat against the wall) of 38°.
When cutting crown molding by this method the bevel angle
should be set at 33.85°. The miter angle should be set at
31.62° either right or left, depending on the desired cut for
theapplication.Seethechartbelowforcorrectanglesettings
and correct positioning of crown molding on miter table.
LAYING MOLDING FLAT ON THE MITER
TABLE
See Figure 40.
The settings in the chart on page 29 can be used for cutting
All Standard (U.S.) crown molding with 52° and 38° angles.
The crown molding is placed flat on the miter table using
the compound features of your miter saw.
To use this method for accurately cutting crown molding for
a 90° inside or outside corner, lay the molding with its broad
back surface flat on the miter table and against the fence.
52°
CEILING
38°
W
A
L
INSIDE
CORNER
FENCE
L
OUTSIDE
CORNER
FENCE
TOP EDGE AGAINST FENCE =
LEFT SIDE, INSIDE CORNER
RIGHT SIDE, OUTSIDE CORNER
BOTTOM EDGE AGAINST FENCE =
RIGHT SIDE, INSIDE CORNER
LEFT SIDE, OUTSIDE CORNER
MITER TABLE
MITER TABLE
CROWN MOLDING FLAT ON MITER TABLE
Fig. 40
28
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OPERATION
Bevel
Angle
Type of Cut
Setting
Left side, inside corner
1. Top edge of molding against fence
2. Miter table set right 31.62°
3. Save left end of cut
33.85°
33.85°
33.85°
33.85°
Right side, inside corner
1. Bottom edge of molding against fence
2. Miter table set left 31.62°
3. Save left end of cut
4
5
5
4
Left side, outside corner
31.6
31.6
30
30
22.5
22.5
1. Bottom edge of molding against fence
2. Miter table set left 31.62°
3. Save right end of cut
15
15
0
WRONG
Fig. 42
Right side, outside corner
1. Top edge of molding against fence
2. Miter table set right 31.62°
3. Save right end of cut
WARNING:
To avoid a kickback and to avoid serious personal injury,
never position the concave edge of bowed or warped
material against the fence.
CUTTING WARPED MATERIAL
See Figures 41 - 42.
When cutting warped material, always make sure it is posi-
tioned on the miter table with the convex side against the
fence as shown in figure 41.
CLAMPING WIDE WORKPIECES
Whencuttingwideworkpieces, suchas 52in. x6in., boards
should be clamped with a C-clamp.
If the warped material is positioned the wrong way as shown
in figure 42, it will pinch the blade near the completion of
the cut.
4
5
5
4
31.6
31.6
30
30
22.5
22.5
15
15
0
RIGHT
Fig. 41
29
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ADJUSTMENTS
However, when the diameter of the blade has been
reduced due to sharpening, it may be necessary to
adjust the depth stop to provide maximum cutting
capacity. Also, when a new blade is installed, it is
necessary to check the clearance of the blade to the
miter table support before starting the saw. Make adjust-
ments if needed.
WARNING:
To prevent accidental starting that could cause serious
personal injury, always remove the battery pack from the
tool when making adjustments.
The compound miter saw has been adjusted at the
factory for making very accurate cuts. However, some of
the components might have been jarred out of alignment
during shipping. Also, over a period of time, readjustment
willprobablybecomenecessaryduetowear.Afterunpacking
the saw, check the following adjustments before you begin
using saw. Make any readjustments that are necessary and
periodically check the parts alignment to make sure that the
saw is cutting accurately.
DEPTH STOP ADJUSTMENTS
See Figure 43.
nRemove the battery pack from the tool.
nTo adjust the depth stop use a 17 mm wrench or adjust-
able wrench and loosen the hex nut at the rear of the
miter saw arm.
nUse the 5 mm hex key provided to adjust the depth stop
adjustment screw. The saw blade is lowered by turning
the screw counterclockwise and raised by turning the
screw clockwise.
CAUTION:
Do not start the compound miter saw without checking
for interference between the blade and the throat plate.
Damage could result to the blade if it strikes the throat
plate during operation of the saw.
nLower the blade into the throat plate of the miter table.
Check blade clearance and maximum cutting distance
(distance from fence where blade enters) to front of miter
table slot.
n Readjust if necessary.
PIVOT ADJUSTMENTS
NOTE: These adjustments were made at the factory and
normally do not require readjustment.
DEPTH STOP
ADJUSTMENT
SCREW
TRAVEL PIVOT ADJUSTMENT
nThe saw arm should rise completely to the up position
by itself.
HEX NUT
nIf the saw arm does not raise by itself or if there is play
in the pivot joints, have saw repaired at your nearest
RYOBI AUTHORIZED SERVICE CENTER.
3
0
1
5
BEVEL PIVOT ADJUSTMENT
nThe compound miter saw should bevel easily by loosening
BEVEL
LOCK KNOB
the bevel lock knob and tilting the saw arm to the left.
nIf movement is tight or if there is play in the pivot, have
saw repaired by at your nearest RYOBI AUTHORIZED
SERVICE CENTER.
MITER TABLE
Fig. 43
DEPTH STOP
The depth stop limits the blade’s downward travel. It
allows the blade to go below the miter table enough to
maintain full cutting capacities. The depth stop positions
the blade 1/4 in. from the miter table support.
NOTE: The miter table support is located inside miter
table.
The depth stop is factory set to provide maximum cutting
capacity for the 8-1/4 in. blade provided with the saw.
Therefore, the saw with blade provided should never need
adjustments.
30
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MAINTENANCE
GENERAL MAINTENANCE
WARNING:
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, dust, oil, grease, etc.
When servicing, use only identical Ryobi replacement
parts. Use of any other parts may create a hazard or
cause product damage.
WARNING:
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which may result in serious personal
injury.
Always wear safety goggles or safety glasses with side
shields during power tool operation or when blowing
dust. If operation is dusty, also wear a dust mask.
WARNING:
Only the parts shown on the parts list are intended to be
repaired or replaced by the customer. All other parts should
be replaced at a Ryobi Authorized Service Center.
To avoid serious personal injury, always remove the
battery pack from the tool when cleaning or performing
any maintenance.
BATTERY PACK REMOVAL AND PREPARATION
FOR RECYCLING
BATTERIES
Thebatterypackforthistoolisequippedwithnickel-cadmium
rechargeablebatteries.Lengthofservicefromeachcharging
will depend on the type of work you are doing.
To preserve natural resources, please
recycle or dispose of batteries
properly.
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.
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:
nRemove the battery pack from the charger once it is fully
WARNING:
charged and ready for use.
Upon removal, cover the battery pack’s termi-
nals with heavy-duty adhesive tape. Do not at-
tempt to destroy or disassemble battery pack or
remove any of its components. 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.
For battery storage longer than 30 days:
nStore the battery pack where the temperature is below
80°F.
nStore battery packs in a “discharged” condition.
31
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OPERATOR’S MANUAL
8-1/4 in., 18 Volt Cordless
Compound Miter Saw
P550
• 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:
P550
• 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
983000-656
6-05
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