OPERATOR’S MANUAL
12 in. COMPOUND MITER SAW
WITh LASER
MS1250LZA - Double Insulated
Your miter saw has been engineered and manufactured to our 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 RIDGID® product.
SAVE ThIS MANUAL FOR FUTURE REFERENCE
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GENERAL SAFETY RULES
SECURE WORK. Use clamps or a vise to hold work
when practical, it is safer than using your hand and
frees both hands to operate the tool.
WARNING:
Read and understand all instructions. Failure to
follow all instructions listed below, may result in
electric shock, fire and/or serious personal injury.
DO NOT OVERREACh. Keep proper footing and
balance at all times.
MAINTAIN TOOLS WITh CARE. Keep tools sharp
andcleanforbetterandsaferperformance.Followinstruc-
tions for lubricating and changing accessories.
READ ALL INSTRUCTIONS
KNOWYOURPOWERTOOL.Readtheoperator’smanual
carefully. Learn the applications and limitations as well
as the specific potential hazards related to this tool.
DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments, blades, bits,
cutters, etc., alltoolsshouldbedisconnectedfrompower
source.
GUARDAGAINSTELECTRICALShOCKBYPREVENT-
ING BODY CONTACT WITh GROUNDED SURFACES.
For example: pipes, radiators, ranges, refrigerator enclo-
sures.
AVOID ACCIDENTAL STARTING. Be sure switch is off
when plugging in any tool.
USE RECOMMENDED ACCESSORIES. Consult the
operator’s manual for recommended accessories. The
use of improper accessories may result in injury.
KEEP GUARDS IN PLACE and in good working order.
REMOVE ADJUSTING KEYS AND WRENChES. Form
habitofcheckingtoseethatkeysandadjustingwrenches
are removed from tool before turning it on.
NEVER STAND ON TOOL. Serious injury could occur if
the tool is tipped.
KEEPWORKAREACLEAN.Clutteredareasandbenches
invite accidents. DO NOT leave tools or pieces of wood
on the tool while it is in operation.
ChECK DAMAGED PARTS. Before further use of the
tool, a guard or other part that is damaged should be
carefullycheckedtodeterminethatitwilloperateproperly
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 must
be properly repaired or replaced by an authorized service
center to avoid risk of personal injury.
DO NOT USE IN DANGEROUS ENVIRONMENTS. Do
not use power tools in damp or wet locations or expose
to rain. Keep the work area well lit.
KEEP ChILDREN AND VISITORS AWAY. All visi-
tors should wear safety glasses and be kept a safe
distance from work area. Do not let visitors contact
tool or extension cord while operating.
USE ThE RIGhT DIRECTION OF FEED. Feed work into
a blade, cutter, or sanding spindle against the direction
or rotation of the blade, cutter, or sanding spindle only.
MAKE WORKShOP ChILDPROOF with padlocks,
master switches, or by removing starter keys.
DON’T FORCE ThE TOOL. It will do the job better and
NEVERLEAVETOOLRUNNINGUNATTENDED. TURN
ThE POWER OFF. Don't leave tool until it comes to a
complete stop.
safer at the feed rate for which it was designed.
USE ThE RIGhT TOOL. Do not force the tool or attach-
ment to do a job for which it was not designed.
PROTECT YOUR LUNGS. Wear a face or dust mask if
USEThEPROPERExTENSIONCORD. Makesureyour
extensioncordisingoodcondition.Useonlyacordheavy
enough to carry the current your product will draw. An
undersized cord will cause a drop in line voltage result-
ing in loss of power and overheating. A wire gauge size
(A.W.G.) of at least 14 is recommended for an extension
cord ꢀ5 feet or less in length. If in doubt, use the next
heaviergauge.Thesmallerthegaugenumber,theheavier
the cord.
the cutting operation is dusty.
PROTECT YOUR hEARING. Wear hearing protection
during extended periods of operation.
DO NOT ABUSE CORD. Never carry tool by the cord or
yank it to disconnect from receptacle. Keep cord from
heat, oil, and sharp edges.
USE OUTDOOR ExTENSION CORDS. When tool
is used outdoors, use only extension cords with
approved ground connection that are intended for use
outdoors and so marked.
DRESSPROPERLY.Donotwearlooseclothing,neckties,
or jewelry that can get caught and draw you into moving
parts. Rubber gloves and nonskid footwear are recom-
mended when working outdoors. Also wear protective
hair covering to contain long hair.
KEEP BLADES CLEAN, ShARP, AND WITh
SUFFICIENT SET. Sharp blades minimize stalling
and kickback.
ALWAYS WEAR SAFETY GLASSES WITh SIDE
ShIELDS. Everyday eyeglasses have only impact-
resistant lenses, they are NOT safety glasses.
BLADE COASTS AFTER BEING TURNED OFF.
3
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GENERAL SAFETY RULES
NEVER USE IN AN ExPLOSIVE ATMOSPhERE.
USE ONLY CORRECT BLADES. Do not use blades with
incorrect size holes. Never use blade washers or blade
bolts that are defective or incorrect. The maximum blade
capacity of your saw is 1ꢀ in.
Normal sparking of the motor could ignite fumes.
INSPECT TOOL CORDS PERIODICALLY. If dam-
aged, have repaired by a qualified service technician at
anauthorizedservicefacility.Theconductorwithinsulation
havinganoutersurfacethatisgreenwithorwithoutyellow
stripes is the equipment-grounding conductor. If repair
or replacement of the electric cord or plug is necessary,
do not connect the equipment-grounding conductor to a
live terminal. Repair or replace a damaged or worn cord
immediately. Stay constantly aware of cord location and
keep it well away from the rotating blade.
BEFORE MAKING A CUT, BE SURE ALL ADJUST-
MENTS ARE SECURE.
BE SURE BLADE PATh IS FREE OF NAILS. Inspect for
and remove all nails from lumber before cutting.
NEVER TOUCh BLADE or other moving parts during
use.
NEVER START A TOOL WhEN ANY ROTATING COM-
PONENT IS IN CONTACT WITh ThE WORKPIECE.
INSPECT ExTENSION CORDS PERIODICALLY and
replace if damaged.
DO NOT OPERATE A TOOL WhILE UNDER ThE
INFLUENCE OF DRUGS, ALCOhOL, OR ANY
MEDICATION.
POLARIZEDPLUGS.Toreducetheriskofelectricshock,
this tool has a polarized plug (one blade is wider than
the other). This plug will fit in a polarized outlet only one
way. If the plug does not fit fully in the outlet, reverse the
plug. If it still does not fit, contact a qualified electrician
to install the proper outlet. Do not change the plug in any
way.
WhENSERVICINGuseonlyidenticalreplacementparts.
Use of any other parts may create a hazard or cause
product damage.
USE ONLY RECOMMENDED ACCESSORIES listed
in this manual or addendums. Use of accessories that
are not listed may cause the risk of personal injury.
Instructions for safe use of accessories are included
with the accessory.
KEEP TOOL 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 solvents to clean tool.
DOUBLE ChECK ALL SETUPS. Make sure blade is
tight and not making contact with saw or workpiece
before connecting to power supply.
STAY ALERT AND ExERCISE CONTROL. Watch what
you are doing and use common sense. Do not operate
tool when you are tired. Do not rush.
DO NOT USE TOOL IF SWITCh DOES NOT TURN IT
ON AND OFF. Have defective switches replaced by an
authorized service center.
SPECIFIC SAFETY RULES
FIRMLY CLAMP OR BOLT your tool to a workbench or
OPERATINGYOURSAW.Lockthemitertablebysecurely
tightening the miter lock levers. Lock the saw arm (bevel
function) by securely tightening the bevel lock knob.
table at approximately hip height.
KEEP hANDS AWAY FROM CUTTING AREA. Do not
reach underneath work or in blade cutting path with your
hands and fingers for any reason. Always turn the power
off.
NEVER USE A LENGTh STOP ON ThE FREE SCRAP
END OF A CLAMPED WORKPIECE. NEVER hold onto
or bind the free scrap end of the workpiece in any opera-
tion. If a work clamp and length stop are used together,
they must both be installed on the same side of the saw
table to prevent the saw from catching the loose end and
kicking up.
ALWAYSSUPPORTLONGWORKPIECESwhilecutting
tominimizeriskofbladepinchingandkickback. Sawmay
slip, walk or slide while cutting long or heavy boards.
ALWAYS USE A CLAMP to secure the workpiece when
NEVER cut more than one piece at a time. DO NOT
STACK more than one workpiece on the saw table at a
time.
possible.
BE SURE ThE BLADE CLEARS ThE WORKPIECE.
Never start the saw with the blade touching the
workpiece. Allow motor to come up to full speed
before starting cut.
NEVER PERFORM ANY OPERATION FREEhAND.
Always place the workpiece to be cut on the miter table
and position it firmly against the fence as a backstop.
Always use the fence.
MAKESUREThEMITERTABLEANDSAWARM(BEVEL
FUNCTION) ARE LOCKED IN POSITION BEFORE
4
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SPECIFIC SAFETY RULES
NEVER hand hold a workpiece that is too small to be
MAKESUREThEWORKAREAhASAMPLELIGhTING
toseetheworkandthatnoobstructionswillinterferewith
safe operation BEFORE performing any work using your
saw.
clamped. Keep hands clear of the cutting area.
NEVER reach behind, under, or within three inches of the
blade and its cutting path with your hands and fingers for
any reason.
ALWAYS TURN OFF ThE SAW before disconnecting it
to avoid accidental starting when reconnecting to power
supply.NEVERleavethesawunattendedwhileconnected
to a power source.
NEVER reach to pick up a workpiece, a piece of scrap,
or anything else that is in or near the cutting path of the
blade.
ThIS TOOL should have the following markings:
AVOID AWKWARD OPERATIONS AND hAND
POSITIONS where a sudden slip could cause your
hand to move into the blade. ALWAYS make sure you
have good balance. NEVER operate your miter saw
on the floor or in a crouched position.
a) Wear eye protection.
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.
e) Never reach around saw blade.
f) Turn off tool and wait for saw blade to stop before
moving workpiece or changing settings.
g) Disconnect power (or unplug tool as applicable)
before changing blade or servicing.
NEVER stand or have any part of your body in line with
the path of the saw blade.
ALWAYSreleasethepowerswitchandallowthesawblade
to stop rotating before raising it out of the workpiece.
DO NOT TURN ThE MOTOR SWITCh ON AND OFF
RAPIDLY. This could cause the saw blade to loosen
and could create a hazard. Should this ever occur,
stand clear and allow the saw blade to come to a
complete stop. Disconnect your saw from the power
supply and securely retighten the blade bolt.
h) No load speed.
ALWAYS carry the tool only by the carrying handle.
AVOID direct eye exposure when using the laser guide.
ThIS SAW CAN TIP OVER if the saw head is released
suddenly and the saw is not secured to a work surface.
ALWAYS secure this saw to a stable work surface before
any use to avoid serious personal injury.
IF ANY PART OF ThIS MITER SAW IS MISSING or
should break, bend, or fail in any way, or should any
electrical component fail to perform properly, shut off
the power switch, remove the miter saw plug from the
powersourceandhavedamaged, missing, orfailedparts
replaced before resuming operation.
USE ThIS SAW TO CUT WOOD, WOOD PRODUCTS,
AND SOME PLASTICS ONLY. DO NOT CUT METALS,
CERAMICS OR MASONRY PRODUCTS.
IF ThE POWER SUPPLY CORD IS DAMAGED, it must
be replaced only by the manufacturer or by an authorized
service center to avoid risk.
SAVE ThESE INSTRUCTIONS. Refer to them
frequently and use to instruct other users. If you loan
someone this tool, loan them these instructions also.
ALWAYS STAY ALERT! Do not allow familiarity (gained
from frequent use of your saw) to cause a careless mis-
take. ALWAYS REMEMBER that a careless fraction of
a second is sufficient to inflict severe injury.
WARNING:
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals
known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure
to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust
masks that are specially designed to filter out microscopic particles.
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
interpretation 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
Watt
Frequency (cycles per second)
Power
min
Minutes
Time
Alternating Current
Direct Current
Type of current
Type or a characteristic of current
Rotational speed, at no load
Double-insulated construction
Revolutions, strokes, surface speed, orbits, etc., per minute
n
o
No Load Speed
Class II Construction
Per Minute
.../min
Wet Conditions Alert
Do not expose to rain or use in damp locations.
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 and,
as necessary, 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
To reduce the risk of injury or damage, avoid contact with any
hot surface.
Hot Surface
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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
Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
DANGER:
Indicates a potentially hazardous situation, which, if not avoided, could
result in death or serious injury.
WARNING:
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.
CAUTION:
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 operation and instructing others
who may use this product. Call RIDGID® customer
service for assistance.
WARNING:
The operation of any power tool can result in foreign objects being thrown into your eyes, which can result
in severe eye damage. Before beginning power tool operation, always wear safety goggles or safety glasses
with side shields and 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
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ELECTRICAL
DOUBLE INSULATION
ExTENSION CORDS
Double insulation is a concept in safety in electric power
tools, which eliminates the need for the usual three-wire
grounded power cord. All exposed metal parts are isolated
from the internal metal motor components with protect-
ing insulation. Double insulated tools do not need to be
grounded.
When using a power tool at a considerable distance from
a power source, be sure to use an extension cord that has
the capacity to handle the current the product will draw. An
undersized cord will cause a drop in line voltage, resulting in
overheating and loss of power. Use the chart to determine
the minimum wire size required in an extension cord. Only
round jacketed cords listed by Underwriter’s Laboratories
(UL) should be used.
WARNING:
When working outdoors with a product, use an extension
cord that is designed for outside use. This type of cord is
designated with “WA” on the cord’s jacket.
The double insulated system is intended to protect
the user from shock resulting from a break in the
tool’s internal wiring. Observe all normal safety
precautions to avoid electrical shock.
Before using any extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
NOTE: Servicing of a product with double insulation requires
extreme care and knowledge of the system and should be
performed only by a qualified service technician. For service,
we suggest you return the tool to your nearest authorized
service center for repair. Always use original factory replace-
ment parts when servicing.
**Ampere rating (on product data plate)
0-ꢀ.0
ꢀ.1-3.4 3.5-5.0 5.1-7.0 7.1-1ꢀ.0 1ꢀ.1-16.0
Cord Length
Wire Size (A.W.G.)
ꢀ5'
50'
16
16
16
16
16
16
16
16
14
16
14
1ꢀ
14
14
10
14
1ꢀ
—
ELECTRICAL CONNECTION
100'
This tool has a precision-built electric motor. It should be
connected to a power supply that is 120 volts, 60 hz, AC
only (normal household current). Do not operate this tool
on direct current (DC). A substantial voltage drop will cause
a loss of power and the motor will overheat. If the tool does
not operate when plugged into an outlet, double-check the
power supply.
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
WARNING:
Keep the extension cord clear of the working area.
Position the cord so that it will not get caught on
lumber, tools, or other obstructions while you are
working with a power tool. Failure to do so can
result in serious personal injury.
WARNING:
Check extension cords before each use. If dam-
aged replace immediately. Never use tool with a
damaged cord since touching the damaged area
could cause electrical shock resulting in serious
injury.
8
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GLOSSARY OF TERMS
Anti-Kickback Pawls (radial arm and table saws)
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.
Non-Through Cuts
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.
Cross Cut
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.
Cutter head (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.
9
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FEATURES
PRODUCT SPECIFICATIONS
Cutting Capacity with Miter at 0°/Bevel 0°:
Maximum nominal lumber sizes:. . . . . . . . . . ꢀ x 8, 4 x 4
Blade Diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1ꢀ in.
Arbor Hole . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 in.
No Load Speed . . . . . . . . . . . . . . . . . . 4,000 r/min. (RPM)
Input . . . . . . . . . . . . . . . . 1ꢀ0 V, 60 Hz, AC Only, 15 Amps
Net Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 lbs.
Cutting Capacity with Miter at 45°/Bevel 0°:
Maximum nominal lumber sizes:. . . . . . . . . . . . . . . ꢀ x 6
Cutting Capacity with Miter at 0°/Bevel 45°:
Maximum nominal lumber sizes:. . . . . . . . . . . . . . . ꢀ x 8
Cutting Capacity with Miter at 45°/Bevel 45°:
Maximum nominal lumber sizes:. . . . . . . . . . . . . . . ꢀ x 6
bevel
locK
Knob
bevel
stop pin
switch
locK
“D” hanDle
upper blaDe
guarD
blaDe
wrench
storage
switch
trigger
Dust
guiDe
lower blaDe
guarD
repeat-a-cut™
bevel
locK
Knob
Fence
screw
zero clearance
throat plate
Dust
bag
Miter
scale
Miter
locK plate
sliDing Miter
Fence
table
extension
Miter locK
hanDle
positive
stop(s)
saw base
worK
claMp
Miter
table
Fig. 1
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FEATURES
locK
pin
KNOW YOUR COMPOUND MITER SAW
See Figure 1.
The safe use of this product requires an understanding of
the information on the tool and in this operator’s manual as
well as a knowledge of the project you are attempting. Before
use of this product, familiarize yourself with all operating
features and safety rules.
carrying
hanDle
35
50
40
45
15 AMP MOTOR
This saw has a powerful 15 amp motor with sufficient
power to handle tough cutting jobs. It is made with all ball
bearings, and has externally accessible brushes for ease
of servicing.
12 in. BLADE
A 1ꢀ in. blade is included with your compound miter saw. It
will cut materials up to 7-7/8 in. wide, depending upon the
angle at which the cut is being made.
BLADE WRENCh STORAGE
A blade wrench is packed with this saw. One end of the
wrench is a phillips screwdriver and the other end is a hex
key. Use the hex key end when installing or removing blade
and the phillips end when removing or loosening screws. A
storage area for the blade wrench is located in the saw's
base.
Miter locK
hanDle
saw arM locKeD in Down position
Fig. ꢀ
CARRYING hANDLE
See Figure 2.
switch
trigger
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.
MITER LOCK hANDLE
See Figure 2.
spinDle
locK
button
The miter lock handle securely locks the saw at desired
miter angles.
SPINDLE LOCK BUTTON
See Figure 3.
Fig. 3
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 only.
paDlocK
SWITCh TRIGGER
See Figure 4.
To prevent unauthorized use of the compound miter saw,
disconnect it from the power supply and lock the switch in
the off position. To lock the switch, install a padlock (not
included) through the hole in the switch trigger. A lock with
a long shackle up to 9/3ꢀ in. diameter may be used. When
the lock is installed and locked, the switch is inoperable.
Store the padlock key in another location.
Fig. 4
11
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FEATURES
ELECTRIC BRAKE
LASER GUIDE
An electric brake has been provided to quickly stop blade
rotation after the switch is released.
For more accurate cuts, a laser guide is included with your
miter saw. When used properly, the laser guide makes
accurate, precision cutting simple and easy.
REPEAT-A-CUT™
See Figure 5.
POSITIVE STOPS ON MITER TABLE
Positive stops have been provided at 0°, 15°, ꢀꢀ.5°, 31.6°, and
45°. The 0°, 15°, ꢀꢀ.5°, 31.6°, and 45° positive stops have been
provided on both the left and right side of the miter table.
The Repeat-A-Cut™ feature on both the left and right side
miter fences can be used when making repetitive cuts.
Simply mark the fence with a pencil, make the desired
number of cut(s), then wipe the mark off with a soft cloth.
BEVEL LOCK KNOB
The bevel lock knob securely locks your compound miter
saw at desired bevel angles.
SELF-RETRACTING LOWER BLADE GUARD
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.
BEVEL STOP PIN
The bevel stop pin has three positions:
1. Override (pin pulled completely out)
ꢀ. The 0° - 45° position (middle position)
repeat-a-cut™
3. The 0° - 33.9° position for crown molding (pin pushed in)
SLIDING MITER FENCE
The sliding miter fence on your compound miter saw has
been provided to hold your workpiece securely against when
making all cuts; the left side is larger providing additional
support. It has a sliding feature for clearance of the saw arm
when making bevel or compound cuts.
Loosen the fence screw before attempting to slide the miter
fence. Once the desired position of the miter fence is deter-
mined, tighten the fence screw to secure the sliding fence.
Fig. 5
TOOLS NEEDED
The following tools (not included) are needed for making adjustments:
coMbination sQuare
Fig. 6
FraMing sQuare
1ꢀ
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LOOSE PARTS
The following items are included with your Compound Miter Saw:
Miter Lock Handle
Dust Bag
Washer (ꢀ)
Blade Wrench
Hex Key, 1/16 in.
Laser
Dust Guide
Work Clamp
Table Extension
Socket Head Screw (ꢀ)
Blade Bolt
Operator’s Manual (not shown)
Dust guiDe
blaDe
bolt
laser
socKet heaD
screws
washer
table
extension
hex Key,
1/16 in.
Dust bag
blaDe
wrench
Miter
locK hanDle
worK claMp
Fig. 7
WARNING:
The use of attachments or accessories not listed might be hazardous and could cause serious personal injury.
13
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ASSEMBLY
UNPACKING
This product requires assembly.
WARNING:
Carefully lift saw from the carton by the carrying handle
and the saw base, and place it on a level work surface.
NOTE: This tool is heavy. To avoid back injury, lift with
your legs, not your back, and get help when needed.
This 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.
Lift the saw arm by the handle. Hand pressure should
remain on the saw arm to prevent sudden rise upon
release of the tie wrap.
Inspect the tool carefully to make sure no breakage or
damage occurred during shipping.
Do not connect to power supply until assembly is
complete. Failure to comply could result in acciden-
tal starting and possible serious personal injury.
WARNING:
Do not start the compound miter saw without
checking for interference between the blade and
the miter fence. Damage could result to the blade
if it strikes the miter fence during operation of the
saw.
Do not discard the packing material until you have care-
fully inspected and satisfactorily operated the tool.
The saw is factory set for accurate cutting. After
assembling it, check for accuracy. If shipping has influ-
encedthesettings,refertospecificproceduresexplained
in this manual.
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.
If any parts are damaged or missing, please call
1-866-539-1710 for assistance.
MOUNTING hOLES
See Figure 8.
WARNING:
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). Bolts should be of sufficient length to accommo-
date the saw base, lock washers, hex nuts, and the thickness
of the workbench. Tighten all four bolts securely.
If any parts are damaged or missing, do not oper-
ate this tool until the missing parts are replaced.
Failure to heed this warning could result in serious
personal injury.
WARNING:
The hole pattern for mounting to a workbench is shown in
figure 8. 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.
Do not attempt to modify this tool or create acces-
sories 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.
trace holes
at these locations
For hole pattern
trace holes
at these locations
For hole pattern
Mounting
surFace
saw base
Fig. 8
14
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ASSEMBLY
TABLE ExTENSION
See Figure 9.
The table extension can be used on the left side of the miter
saw. To assemble and install the table extension:
Insert socket head screw and washer into the two holes
in the side of the miter saw base.
Tighten securely.
MITER LOCK hANDLE
See Figure 10.
To install the miter lock handle, place the threaded stud on
the end of the miter lock handle into the threaded hole in the
control arm under miter table. Turn clockwise to tighten.
DUST GUIDE
See Figure 11.
to
tighten
Insert the dust guide inside the exhaust port in the upper
blade guard. Turn the guide so that the open end is facing
down or toward the rear of the saw.
Miter
locK
hanDle
to
loosen
control
arM
Fig. 10
upper
blaDe guarD
Dust
guiDe
table
extension
35
45
40
exhaust
port
washer
socKet heaD
screw
washer
Fig. 9
Fig. 11
15
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ASSEMBLY
DUST BAG
See Figure 12.
A dust bag is provided for use on this miter saw. It fits
over the dust guide on the upper blade guard. To install it,
squeeze the two metal clips to open the mouth of the bag
and slide it on the dust guide. Release the clips. The metal
ring in the bag should lock in between the grooves on the
dust guide.
Dust
bag
To remove the dust bag for emptying, simply reverse the
above procedure.
WORK CLAMP
See Figure 13.
35
45
40
WARNING:
In some operations, the work clamp assembly
may interfere with the operation of the blade guard
assembly. Always make sure there is no interfer-
ence with the blade guard prior to beginning any
cutting operation to reduce the risk of serious
personal injury.
Fig. 1ꢀ
The work clamp provides greater control by clamping the
workpiece to the fence. It also prevents the workpiece from
creeping toward the saw blade. This is very helpful when
cutting compound miters.
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.
To install the work clamp:
Place the shaft of the work clamp in either hole on the
saw table base.
QuicK
release
lever
Rotate the knob on the work clamp to move it in or out
as needed.
NOTE: The work clamp has a quick release lever that makes
positioning of the work clamp effortless.
saw
base
worK
claMp
Fig. 13
16
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ASSEMBLY
laser guiDe
or outer
blaDe washer
WARNING:
In some operations, the work clamp assembly may
interfere with the operation of the blade guard as-
sembly. 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.
screw
blaDe
bolt
blaDe
inner blaDe
washer
TO INSTALL BLADE
See Figure 14.
blaDe bolt
cover
WARNING:
lower
blaDe
guarD
A 1ꢀ 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 securing the blade on the spindle.
Either of these situations could result in a serious
accident and can cause serious personal injury.
blaDe
to
loosen
screw
inner blaDe
washer
Unplug the saw.
Raise saw arm.
to
tighten
Rotate lower blade guard up and loosen screw. Rotate
blade bolt cover up and back to expose the blade bolt.
Depress the spindle lock button and rotate the blade bolt
until the spindle locks.
Using the wrench provided, loosen and remove the blade
blaDe
bolt
bolt.
laser guiDe or
outer blaDe
washer
Flat
on spinDle
NOTE: The blade bolt has left hand threads. Turn blade
bolt clockwise to loosen.
Fig. 14
Remove the outer blade washer or the laser guide. Do
not remove the inner blade washer.
Wipe a drop of oil onto the inner blade washer or the laser
guide and the outer blade washer or laser guide where
they contact the blade.
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.
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.
Replace outer blade washer or the laser guide. The
double “D” flats on the blade washers align with the flats
on the spindle.
Fit saw blade inside lower blade guard and onto spindle.
The blade teeth point downward at the front of saw as
shown in figure 14.
Depress spindle lock button and replace blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt counterclockwise to tighten.
Tighten blade bolt securely.
Replace the lower blade guard and blade bolt cover.
Retighten the screw securely.
17
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ASSEMBLY
WARNING:
Make sure the spindle lock button is not engaged
before reconnecting saw into power source. Never
engage spindle lock button when blade is rotating.
DANGER:
Laser radiation. Avoid direct eye contact with light
source.
ALIGNING ThE LASER GUIDE LINE
See Figure 15.
The laser guide will generate a laser line on the work surface
when the saw blade is spinning. The laser line will appear as
a broken line on the workpiece when the blade assembly is
in the uppermost position and the motor switch is activated.
This broken line will let you see your mark and your laser
guide line at the same time, and will assist you in lining up
your mark for more accurate cutting of the workpiece.
35
45
40
broKen
line
Align the laser line and your mark with the blade at the
uppermostposition. Once bothlines are in alignment, donot
move the workpiece until after you have finished cutting.
Fig. 15
As the blade assembly is lowered toward the workpiece, the
broken line will become solid.
Follow the directions below for using the laser guide:
Removing Your Mark:
Position the laser line on the left edge of your mark on the
work surface in order to remove the mark.
To Cut the Mark:
Position the laser line near or over your mark on the work
surface in order to cut the mark.
To Leave the Mark:
Position the laser line near the right edge of your mark on
the work surface in order to leave the mark.
After you have become familiar with using the laser guide,
you will be able to remove, cut, or leave your mark on the
work surface. Practice will teach you the correct position for
aligning the laser line with your mark. To adjust the position of
the laser line, see the Adjustments section of this manual.
18
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ASSEMBLY
cap heaD
screws
CUTTING A SLOT IN ThE ZERO CLEARANCE
ThROAT PLATE
In order to use your compound miter saw, you must cut
a slot through the zero clearance throat plate to allow for
blade clearance. To cut the slot, set your saw at 0° miter,
turn saw on and allow the blade to reach full speed, then
carefully make a straight cut as far as it will go through the
throat plate. Turn your saw off and allow the blade to come
to a complete stop before raising the saw arm.
Next, adjust the bevel angle to 45°, turn your saw on and al-
low the blade to reach full speed, then carefully make another
cut through the zero clearance throat plate. The slot in the
throat plate will then be wide enough to allow the blade to
pass through it at any angle from 0° to 45°.
NOTE: Many of the illustrations in this manual show only
portions of the compound miter saw. This is intentional
so that we can clearly show points being made in the
illustrations. Never operate the saw without all guards se-
curely in place and in good operating condition.
SQUARING ThE SAW BLADE TO ThE FENCE
See Figures 16 - 21
Fig. 16
Unplug the saw.
sliDing
Miter
Fence
blaDe
WARNING:
Failure to unplug your saw could result in accidental
starting causing possible serious personal injury.
Miter
locK
plate
Pull the saw arm all the way down and engage the lock
35
50
40
45
pin to hold the saw arm in transport position.
Loosen the miter lock handle approximately one-half
Miter
locK
hanDle
turn.
FraMing
sQuare
Miter
table
Depress the miter lock plate and rotate the miter table
until the pointer on the control arm is positioned at 0°.
Release the miter lock plate and securely tighten the miter
view oF blaDe sQuare with Fence
lock handle.
Fig. 17
Lay 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 saw blade.
NOTE: Make sure that the square contacts the flat part
of the saw blade, not the blade teeth.
The edge of the square and the saw blade should be
parallel as shown in figure 17.
If the front or back edge of the saw blade angles away
from the square as shown in figures 19 and ꢀ0, adjust-
ments are needed.
19
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ASSEMBLY
sliDing
Miter
Fence
CAUTION:
To keep from losing control of the unit, steady the
base with one hand while loosening the two bolts
with the other hand.
With the unit securely resting on a large stable surface,
tilt the unit by lifting up on one side of the base.
35
50
45
40
blaDe
Using a combination wrench, loosen the two cap head
screws on the underside of the saw table.
Return the saw to its normal resting position. Make sure
the miter lock knob is loose but do not release the miter
lock plate.
FraMing
sQuare
Miter
table
Use the miter saw knob to move the table so that the
blade contacts the full length of the framing square. Turn
the miter lock knob clockwise to lock saw square to the
fence.
view oF blaDe not sQuare with Fence,
aDJustMents are reQuireD
Fig. 19
Tilt the unit by lifting up on one side of the base and
tighten cap head screws.
Recheck blade squareness to fence and readjust if
sliDing
Miter
Fence
necessary.
Your saw has several scale indicators. After squaring adjust-
ments have been made, it may be necessary to loosen the
indicators screws and reset them to zero. See Figure 18.
blaDe
35
50
45
40
FraMing
sQuare
Miter
table
view oF blaDe not sQuare with Fence,
aDJustMents are reQuireD
Fig. ꢀ0
inDicator
point
scale
inDicator
bevel
scale
Miter
scale
inDicator
screw
scale
inDicator
Fig. 18
inDicator
screw
Fig. ꢀ1
ꢀ0
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ASSEMBLY
bevel
locK
Knob
SQUARING ThE BLADE TO ThE MITER TABLE
See Figures 22 - 25.
Unplug the saw.
blaDe
Miter
Fence
WARNING:
Failure to unplug your saw could result in accidental
starting causing possible serious personal injury.
Pull the saw arm all the way down and engage the lock
35
50
45
40
pin to hold the saw arm in transport position.
Loosen the miter lock handle approximately one-half
turn.
Miter
Miter
locK
Depress the miter lock plate and rotate the miter table
Miter
table
locK plate
until the pointer on the control arm is positioned at 0°.
hanDle
coMbination
sQuare
Release the miter lock plate and securely tighten the miter
correct view oF blaDe
sQuare with Miter table
lock handle.
Loosen bevel lock knob and set saw arm at 0° bevel (blade
Fig. ꢀꢀ
set 90° to miter table). Tighten bevel lock knob.
Place a combination square against the miter table and
the flat part of saw blade.
NOTE: Make sure that the square contacts the flat part
of the saw blade, not the blade teeth.
Rotate the blade by hand and check the blade-to-table
alignment at several points.
The edge of the square and the saw blade should be
parallel as shown in figure ꢀꢀ.
If the top or bottom of the saw blade angles away from
the square as shown in figures ꢀꢀ and ꢀ4, adjustments
are needed.
5
3
50
45
40
coMbination
sQuare
Loosen the bevel lock knob.
Using the blade wrench, loosen the bevel stop adjustment
screw and slide the bevel stop left or right as needed
to bring the saw blade into alignment with the square.
Retighten bevel stop adjustment screw. See Figure 25.
view oF blaDe not sQuare with Miter table,
aDJustMents are reQuireD
Fig. ꢀ3
Retighten bevel lock knob. Recheck blade-to-table align-
ment.
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.
Your saw has several scale indicators. After squaring adjust-
ments have been made, it may be necessary to loosen the
indicators screws and reset them to zero. See Figure 21.
35
50
45
40
coMbination
sQuare
view oF blaDe not sQuare with Miter table,
aDJustMents are reQuireD
Fig. ꢀ4
ꢀ1
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ASSEMBLY
bevel
locK Knob
PIVOT ADJUSTMENTS
NOTE: These adjustments were made at the factory and
normally do not require readjustment.
TRAVEL PIVOT ADJUSTMENT
The saw arm should rise completely to the up position
bevel stop
aDJustMent
screw
by itself.
bevel
stop pin
If the saw arm does not raise by itself or if there is play
in the pivot joints, have saw repaired at your nearest
AUThORIZED SERVICE CENTER.
BEVEL PIVOT ADJUSTMENT
The compound miter saw should bevel easily by
loosening the bevel lock knob and tilting the saw arm
to the left.
bevel
stop
If movement is tight or if there is play in the pivot, have
saw repaired at your nearest AUThORIZED SERVICE
CENTER.
Fig. ꢀ5
OPERATION
WARNING:
WARNING:
Do not allow familiarity with tools to make you
careless. Remember that a careless fraction of a
second is sufficient to inflict severe injury.
Before starting any cutting operation, clamp or bolt
your miter saw to a workbench. Never operate your
miter saw on the floor or in a crouched position.
Failure to heed this warning can result in serious
personal injury.
WARNING:
Always wear safety goggles or safety glasses with
side shields when operating tools. Failure to do so
could result in objects being thrown into your eyes
resulting in possible serious injury.
WARNING:
To avoid serious personal injury, keep your hands
outside the no hands zone; at least 3 in. from blade.
Never perform any cutting operation freehand (with-
out holding workpiece against the fence). The blade
could grab the workpiece if it slips or twists.
WARNING:
Do not use any attachments or accessories not
recommended by the manufacturer of this tool.
The use of attachments or accessories not recom-
mended can result in serious personal injury.
WARNING:
Do not start your compound miter saw without
checking for interference between the blade and
the miter fence. Damage could result to the blade
if it strikes the miter fence during operation of the
saw.
APPLICATIONS
This product has been designed only for the purposes
listed below:
Cross cutting wood and plastic.
Cross cutting miters, joints, etc. for picture frames,
moldings, door casings, and fine joinery.
NOTE: The blade provided is fine for most wood cutting
operations, but for fine joinery cuts or cutting plastic, use one
of the accessory blades available from the RIDGID dealer.
ꢀꢀ
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OPERATION
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 32.
CUTTING WITh YOUR COMPOUND MITER
SAW
Align cutting line on the workpiece with the edge of saw
WARNING:
blade.
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 pos-
sible serious personal injury.
Grasp 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.
Before 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.
Grasp the saw handle firmly. Depress the switch lock
with thumb then squeeze the switch trigger. Allow several
seconds for the blade to reach maximum speed.
Slowly lower the blade into and through the workpiece.
WARNING:
Release 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 the miter table.
To avoid serious personal injury, always tighten the
miter lock handle securely before making a cut.
Failure to do so could result in movement of the
control arm or miter table while making a cut.
TO CROSS CUT
See Figure 26.
A cross cut is made by cutting across the grain of the
workpiece. A straight cross cut is made with the miter table
set at the 0° position. Miter cross cuts are made with the
miter table set at some angle other than zero.
Pull out the lock pin and lift saw arm to its full height.
Loosen the miter lock handle. Rotate the miter lock handle
approximately one-half turn to the left to loosen.
straight
cross cut
Press the miter lock plate down with your thumb and
hold.
Rotate the miter table until the pointer aligns with the
desired angle on the miter scale.
Release the miter lock plate.
NOTE: You can quickly locate 0°, 15°, ꢀꢀ.5°, 31.6°, 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 base.
worK claMp
Fig. ꢀ6
Tighten the miter lock handle securely.
Place 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 34 - 35.
ꢀ3
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OPERATION
TO BEVEL CUT
See Figures 27 - 29.
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 -ꢀ° and 47°.
bevel
scale
scale
inDicator
NOTE: It may be necessary to adjust the sliding miter fence
to assure proper clearance prior to making the cut.
Pull out the lock pin and lift saw arm to its full height.
Loosen the miter lock handle. Rotate the miter lock han-
inDicator
point
dle approximately one-half turn to the left to loosen.
Press the miter lock plate down with your thumb and
inDicator
screw
hold.
Rotate the miter table until the pointer aligns with zero
Fig. ꢀ7
on the miter scale.
Release the miter lock plate.
NOTE: You can quickly locate zero by releasing the lock
plate as you rotate the control arm. The lock plate will seat
itself in one of the built-in positive stop notches, located
in the miter table frame.
bevel cut
Tighten the miter lock handle securely.
®
Loosen the bevel lock knob and move the saw arm to
the left to the desired bevel angle.
Bevel angles can be set from -ꢀ° to 47°.
Once the saw arm has been set at the desired angle,
securely tighten the bevel lock knob.
Place 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 34 - 35.
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 32.
worK claMp
Fig. ꢀ8
Align the cutting line on the workpiece with the edge of
saw blade.
Grasp 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. See Figure 30.
Before 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.
Grasp the saw handle firmly. Depress the switch lock
with thumb then squeeze the switch trigger. Allow several
seconds for the blade to reach maximum speed.
bevel
stop pin
Fig. ꢀ9
ꢀ4
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OPERATION
Slowly lower the blade into and through the workpiece.
coMpounD
Miter cut
Release 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 COMPOUND MITER CUT
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.
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.
worK claMp
Fig. 30
It may take several settings to obtain the desired cut. The
firstanglesettingshouldbecheckedaftersettingthesecond
angle, since adjusting the second angle affects the first.
Make a test cut in scrap material.
Place 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 could collapse on the blade at the end of the
cut, jamming the blade. See Figures 34 - 35.
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.
Pull out the lock pin and lift saw arm to its full height.
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 32.
Loosen the miter lock handle. Rotate the miter lock han-
dle approximately one-half turn to the left to loosen.
Press the miter lock plate down with your thumb and
hold.
Rotate the miter table until the pointer aligns with the
desired angle on the miter scale.
Release the miter lock plate.
NOTE: You can quickly locate 0°, 15°, ꢀꢀ.5°, 31.6°, 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 the miter
table base.
Tighten the miter lock handle securely.
Loosen the bevel lock knob and move the saw arm to
the left to the desired bevel angle.
Bevel a gles ca be set from -2˚ to 47˚.
Once the saw arm has been set at the desired angle,
securely tighten the bevel lock knob.
ꢀ5
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OPERATION
Align the cutting line on the workpiece with the edge of
saw blade.
Grasp 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. See Figure 30.
Before 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.
Grasp the saw handle firmly. Depress the switch lock
with thumb then squeeze the switch trigger. Allow several
seconds for the blade to reach maximum speed.
Slowly lower the blade into and through the workpiece.
See Figures 30 - 31.
Release 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.
SUPPORT LONG WORKPIECES
See Figure 32.
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 work clamp
or a C-clamp to secure the workpiece.
45° x 45° coMpounD Miter cut
Fig. 31
long
worKpiece
35
45
40
worKpiece
supports
Fig. 3ꢀ
ꢀ6
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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 your 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- ꢀꢀ.50°
B- 0.00°
M- ꢀ5.71°
B- 0.00°
M- ꢀ0.00° M- 18.00°
B- 0.00° B- 0.00°
0°
M- ꢀꢀ.4ꢀ°
B- 1.91°
M- 17.94°
M- 19.93°
M- 44.89°
B- 3.53°
M- 35.90° M- ꢀ9.91° M- ꢀ5.63°
B- ꢀ.94° B- ꢀ.50° B- ꢀ.17°
5°
10°
15°
ꢀ0°
ꢀ5°
30°
35°
40°
45°
B- 1.54°
B- 1.71°
M- 19.7ꢀ°
M- 17.74°
M- 44.56° M- 35.58°
B- 7.05° B- 5.86°
M- ꢀ9.6ꢀ° M- ꢀ5.37° M- ꢀꢀ.19°
B- 4.98° B- 4.3ꢀ° B- 3.81°
B- 3.40°
B- 3.08°
M- 44.01° M- 35.06° M- ꢀ9.15°
B- 10.55° B- 8.75° B- 7.44°
M- ꢀ1.81° M- 19.37° M- 17.4ꢀ°
B- 5.68° B- 5.08° B- 4.59°
M- ꢀ4.95°
B- 6.45°
M- ꢀ8.48°
B- 9.85°
M- 34.3ꢀ°
B- 11.60°
M- ꢀ4.35° M- ꢀ1.ꢀ7° M- 18.88° M- 16.98°
B- 8.53° B- 7.5ꢀ° B- 6.7ꢀ° B- 6.07°
M- 43.ꢀꢀ°
B- 14.00°
M- 4ꢀ.19° M- 33.36° M- ꢀ7.6ꢀ° M- ꢀ3.56° M- ꢀ0.58° M- 18.ꢀ6°
B- 17.39° B- 14.38° B- 1ꢀ.ꢀ0° B- 10.57° B- 9.31° B- 8.31°
M- 16.41°
B- 7.50°
M- 40.89° M- 3ꢀ.18° M- ꢀ6.57° M- ꢀꢀ.64° M- 19.73° M- 17.50°
B- ꢀ0.70° B- 17.09° B- 14.48° B- 1ꢀ.53° B- 11.03° B- 9.85°
M- 15.7ꢀ°
B- 8.89°
M- 39.3ꢀ°
B- ꢀ3.93°
M- ꢀ5.31°
B- 16.67°
M- 16.60°
B- 11.31°
M- 30.76°
B- 19.70°
M- ꢀ1.53° M- 18.74°
B- 14.41° B- 1ꢀ.68°
M- 14.90°
B- 10.ꢀ1°
M- 37.45° M- ꢀ9.10°
B- ꢀ7.03° B- ꢀꢀ.ꢀ0°
M- ꢀ0.ꢀ5° M- 17.60° M- 15.58°
B- 16.19° B- 14.ꢀ4° B- 1ꢀ.70°
M- ꢀ3.86°
B- 18.75°
M- 13.98°
B- 11.46°
M- 35.ꢀ6°
B- 30.00°
M- ꢀꢀ.ꢀ1°
B- ꢀ0.70°
M- 14.43°
B- 14.00°
M- ꢀ7.19°
B- ꢀ4.56°
M- 18.80° M- 16.3ꢀ°
B- 17.87° B- 15.70°
M- 1ꢀ.94°
B- 1ꢀ.6ꢀ°
M- 3ꢀ.73°
B- 3ꢀ.80°
M- ꢀ0.36°
B- ꢀꢀ.5ꢀ°
M- ꢀ5.03°
B- ꢀ6.76°
M- 17.ꢀ0° 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- 18.3ꢀ°
B- ꢀ4.18°
M- ꢀ9.84° M- ꢀꢀ.6ꢀ°
B- 35.40° B- ꢀ8.78°
M- 15.44° M- 13.36° M- 11.79° M- 10.56°
B- ꢀ0.8ꢀ° B- 18.ꢀ7° B- 16.ꢀ7° B- 14.66°
M- 19.96°
B- 30.60°
M- 13.54° M- 11.70° M- 10.31°
B- ꢀꢀ.07° B- 19.35° B- 17.ꢀ3°
M- ꢀ6.57°
B- 37.76°
M- 16.10°
B- ꢀ5.66°
M- 9.ꢀ3°
B- 15.5ꢀ°
M- 13.71°
B- ꢀ6.95°
M- 7.8ꢀ°
B -16.ꢀ6°
M- ꢀꢀ.91° M- 17.07°
B- 39.86° B- 3ꢀ.19°
M- 11.50° M- 9.93° M- 8.74°
B- ꢀ3.16° B- ꢀ0.ꢀ9° 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- ꢀ8.0ꢀ° B- ꢀ4.06° B- ꢀ1.08° 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- 6.1ꢀ° M- 5.38°
B- ꢀ4.78° B- ꢀ1.69° B- 19.ꢀ9°
M- 8.50°
B- ꢀ8.88°
M- 5.73°
B- ꢀ9.50°
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°
B- ꢀ5.30° B- ꢀꢀ.14°
M- 3.6ꢀ°
B- 19.68°
M- 3.ꢀ3°
B- 17.7ꢀ°
M- 3.6ꢀ°
B- 35.84°
M- ꢀ.40° M- ꢀ.07° M- 1.8ꢀ°
B- ꢀ5.61° B- ꢀꢀ.41° B- 19.9ꢀ°
M- ꢀ.88°
B- ꢀ9.87°
M- 1.6ꢀ°
B- 17.93°
M- 0.00°
B- 36.00°
M- 0.00° M- 0.00° M- 0.00°
B- ꢀ5.71° B- ꢀꢀ.50° B- ꢀ0.00°
M- 0.00°
B- 30.00°
M- 0.00°
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
ꢀ7
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OPERATION
When cutting crown molding by this method the bevel angle
should be set at 33.85°. The miter angle should be set at 31.6°
either right or left, depending on the desired cut for the ap-
plication. See the chart below for correct angle settings and
correct positioning of crown molding on miter table.
CUTTING CROWN MOLDING
Your compound miter saw does an excellent job of cutting
crown molding. In general, compound miter saws do a better
job of cutting crown molding than any other tool made.
In order to fit properly, crown molding must be compound
mitered with extreme accuracy.
The settings in the chart below can be used for cutting All
Standard (U.S.) crown molding with 5ꢀ° and 38° angles. The
crown molding is placed flat on the miter table using the
compound features of your miter saw.
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 5ꢀ° and a bottom rear angle (the section that
fits flat against the wall) of 38°.
Bevel
Angle
Type of Cut
Setting
Left side, inside corner
LAYING MOLDING FLAT ON ThE MITER
TABLE
See Figure 33.
1. Top edge of molding against fence
ꢀ. Miter table set right 31.6°
3. Save left end of cut
33.85°
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.
Right side, inside corner
1. Bottom edge of molding against fence
ꢀ. Miter table set left 31.6°
3. Save left end of cut
33.85°
33.85°
33.85°
When setting the bevel and miter angles for compound mi-
ters, remember that the settings are interdependent; chang-
ing one angle changes the other angle as well.
Left side, outside corner
1. Bottom edge of molding against fence
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.
ꢀ. Miter table set left 31.6°
3. Save right end of cut
Right side, outside corner
1. Top edge of molding against fence
ꢀ. Miter table set right 31.6°
3. Save right end of cut
52°
ceiling
38°
w
a
l
l
Fence
insiDe
corner
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. 33
ꢀ8
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OPERATION
MAKING A CROWN MOLDING SUPPORT JIG
Bevel
Angle
Setting
A crown molding support jig will need to be made when
cutting crown molding with no required bevel setting. The
support jig holds the crown molding in place during the
cutting operation. When using this method, the saw can be
quickly adjusted for corners that are not 90° square.
Type of Cut
Left side, inside corner
1. Top edge of molding against fence
ꢀ. Miter table set right 45°
3. Save left end of cut
0°
0°
0°
0°
NOTE: A separate support jig must be made for different
widths.
Right side, inside corner
1. Bottom edge of molding against fence
ꢀ. Miter table set left 45°
To make a support jig:
Usingapieceofwood1/ꢀin. thick, 5in. wide, andꢀ3-1/ꢀin.
long, place the wood on the miter table against the miter
fence.
3. Save left end of cut
Left side, outside corner
1. Bottom edge of molding against fence
ꢀ. Miter table set left 45°
NOTE: Use a piece of wood ꢀ8 in. long if using the exten-
sion table.
From the back side of the saw, use a pencil to mark the
3. Save right end of cut
wood through the holes in the miter fences.
Right side, outside corner
1. Top edge of molding against fence
ꢀ. Miter table set right 45°
3. Save right end of cut
Drill holes through the wood then countersink the holes
to accept flat head screws.
Attach the wood to the fence using the flat head
screws.
Place a piece of crown molding firmly against the miter
table and the wood. Mark the height of the molding with
a pencil.
CUTTING WARPED MATERIAL
See Figures 34 - 35.
Remove the screws and the wood from the miter fence
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 34.
then cut the wood to this width.
Using small nails and glue, attach a piece of wood
(1/ꢀ in. thick x 1-1/ꢀ in. wide x ꢀ3-1/ꢀ or ꢀ8 in. long) to
the top of the wood.
If the warped material is positioned the wrong way as shown
in figure 35, it will pinch the blade near the completion of
the cut.
NOTE: Keep nails away from the area around the blade
cutting path.
Securely reattach the support jig to the miter fence.
Make a full 45° left miter cut and a 45° right miter cut
through the completed support jig.
USING A CROWN MOLDING SUPPORT JIG
Place the crown molding upside down on the miter table
with the bottom of the molding against the wood fence.
Use the chart below to select the proper miter angle.
Loosen the miter lock handle and position the miter table
to the desired setting. Securely tighten the miter lock
handle.
Slowly lower the blade into and through the molding.
Release the switch trigger and allow the saw blade to stop
rotating before raising the blade out of the workpiece.
Wait until the electric brake stops blade from turning
before removing the workpiece from the miter table.
right
Fig. 34
ꢀ9
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OPERATION
CLAMPING WIDE WORKPIECES
See Figure 36.
When cutting wide workpieces, such as ꢀ in. x 6 in., boards
should be clamped with a C-clamp as shown in figure 36.
wrong
Fig. 35
45
40
WARNING:
To avoid a kickback and to avoid serious personal
injury, never position the concave edge of bowed
or warped material against the fence.
wiDe boarD
Fig. 36
ADJUSTMENTS
NOTE: When properly aligned, the laser should be on the
left edge of the kerf.
WARNING:
Once aligned, remove and store the hex key (1/16 in.),
Before performing any adjustment, make sure the
tool is unplugged from the power supply. Failure to
heed this warning could result in serious personal
injury.
and lower the blade guard.
NOTE: Always make practice cuts on scrap wood before
cutting through your workpiece.
aDJustMent
screw
TO ADJUST ThE LASER GUIDE
See Figure 37.
NOTE: Avoid direct eye exposure when using the laser
guide.
Set both the bevel angle and the miter table at 0°.
Use the work clamp or a C-clamp to secure a piece of
scrap wood.
Plug the saw into the power source and make a slight
cut to score the wood.
hex Key
laser
Raise the saw arm and unplug the saw.
aperture
button
Lift and hold the lower blade guard.
Rotate the blade by hand until you can push and hold
the laser button and the laser is near the center of the
workpiece as shown in figure 37.
laser
MarK
To adjust the laser, turn the adjustment screw coun-
ter-clockwise or clockwise using the hex key (1/16 in.)
provided.
Fig. 37
30
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MAINTENANCE
BRUSh REPLACEMENT
See Figure 38.
WARNING:
The saw has externally accessible brush assemblies that
should be periodically checked for wear.
When servicing, use only identical replacement
parts. Use of any other part may create a hazard
or cause product damage.
Proceed as follows when replacement is required:
Unplug the saw.
WARNING:
WARNING:
Failure to unplug the saw could result in accidental
starting causing serious 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.
Remove brush cap with a screwdriver. Brush assembly is
spring loaded and will pop out when you remove brush
cap.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, carbon dust, etc.
Remove brush assembly.
Check for wear. Replace both brushes when either has
less than 1/4 in. length of carbon remaining. Do not re-
place one side without replacing the other.
Reassemble using new brush assemblies. Make sure
curvature of brush matches curvature of motor and that
brush moves freely in brush tube.
WARNING:
Do not at any time let brake fluids, gasoline, pe-
troleum-based products, penetrating oils, etc.,
come in contact with plastic parts. They contain
chemicals that can damage, weaken, or destroy
plastic.
Make sure brush cap is oriented correctly (straight) and
replace.
Tighten brush cap securely. Do not overtighten.
LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrica-
tion is required.
brush
cap
brush
asseMbly
brush
asseMbly
®
WARNING:
To ensure safety and reliability, all repairs should
be performed by a qualified service technician at
an authorized service center to avoid risk of per-
sonal injury.
Some areas will require infrequent lubrications. You will
need to apply:
brush
cap
Fig. 38
Automotive oil directly to the slide bars.
Light oil or a pressurized light spray oil to the arm pivot
shaft.
Light oil or a pressurized light spray oil to the torsion
spring.
31
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MAINTENANCE
ChANGING ThE BATTERIES IN ThE LASER
See Figure 38.
Unplug the saw.
Rotate and hold lower blade guard up.
Using the hex key (1/16 in.) provided, loosen and remove
the screw from the battery compartment then separate
the cover from the laser guide.
Lower the blade guard.
battery
coMpartMent
Remove the three button cell batteries.
NOTE: Replace the batteries with button cell batteries
that have a rating of 1.5 volt and 100 mAh (milliampere
hour) minimum (number 76 series or equivalent).
screw
When replacing the batteries, the laser guide should be
thoroughly cleaned. Use a soft paintbrush, or similar
device, to remove all sawdust and debris.
After cleaning the laser guide and replacing batteries,
secure battery compartment to laser guide using the
screw. Tighten screw securely.
batteries
battery
coMpartMent
CAUTION:
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
negative (–)
laser
guiDe
Fig. 38
3ꢀ
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WARRANTY
RIDGID® hAND hELD AND STATIONARY POWER TOOL
3 YEAR LIMITED SERVICE WARRANTY
Proof of purchase must be presented when requesting
warranty service.
WhAT IS NOT COVERED
This warranty applies only to the original purchaser at
retail and may not be transferred. This warranty only covers
defects arising under normal usage and does not cover any
malfunction, failure or defect resulting from misuse, abuse,
neglect, alteration, modification or repair by other than
an authorized service center for RIDGID® branded hand
held and stationary power tools. Consumable accessories
provided with the tool such as, but not limited to, blades,
bits and sand paper are not covered.
RIDGID®, INC. AND ONE WORLD TEChNOLOGIES,
INC. MAKE NO WARRANTIES, REPRESENTATIONS OR
PROMISES AS TO ThE QUALITY OR PERFORMANCE OF
ITS POWER TOOLS OThER ThAN ThOSE SPECIFICALLY
STATED IN ThIS WARRANTY.
Limited to RIDGID® hand held and stationary power tools
purchased ꢀ/1/04 and after. This product is manufactured
by One World Technologies, Inc. The trademark is licensed
from RIDGID®, Inc. All warranty communications should be
directed to One World Technologies, Inc., attn: RIDGID®
Hand Held and Stationary Power Tool Technical Service at
(toll free) 1-866-539-1710.
90-DAY SATISFACTION GUARANTEE POLICY
During the first 90 days after the date of purchase, if you are
dissatisfied with the performance of this RIDGID® Hand Held
and Stationary Power Tool for any reason you may return
the tool to the dealer from which it was purchased for a full
refund or exchange. To receive a replacement tool you must
present proof of purchase and return all original equipment
packaged with the original product. The replacement tool
will be covered by the limited warranty for the balance of
the 3 YEAR service warranty period.
ADDITIONAL LIMITATIONS
To the extent permitted by applicable law, all implied warran-
ties, including warranties of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE, are disclaimed. Any implied
warranties, including warranties of merchantability or fitness
for a particular purpose, that cannot be disclaimed under
state law are limited to three years from the date of purchase.
One World Technologies, Inc. and RIDGID®, Inc. are not
responsible for direct, indirect, incidental or consequential
damages. Some states do not allow limitations on how long
an implied warranty lasts and/or do not allow the exclusion
or limitation of incidental or consequential damages, so the
above limitations may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights
which vary from state to state.
WhAT IS COVERED UNDER ThE 3 YEAR
LIMITED SERVICE WARRANTY
This warranty on RIDGID® Hand Held and Stationary Power
Tools covers all defects in workmanship or materials and nor-
mal wear items such as brushes, chucks, motors, switches,
cords, gears and even cordless batteries in this RIDGID®
tool for three years following the purchase date of the tool.
Warranties for other RIDGID® products may vary.
hOW TO OBTAIN SERVICE
To obtain service for this RIDGID® tool you must return it;
freight prepaid, or take it in to an authorized service center
for RIDGID® branded hand held and stationary power tools.
You may obtain the location of the authorized service center
nearest you by calling (toll free) 1-866-539-1710 or by log-
requesting warranty service, you must present the original
dated sales receipt. The authorized service center will
repair any faulty workmanship, and either repair or replace
any part covered under the warranty, at our option, at no
charge to you.
One World Technologies, Inc.
P.O. Box 35, Hwy. 8
Pickens, SC ꢀ9671
33
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OPERATOR’S MANUAL
12 in. COMPOUND MITER SAW
WITh LASER
MS1250LZA - Double Insulated
CUSTOMER SERVICE INFORMATION
For parts or service, contact your nearest RIDGID authorized service
center.Besuretoprovideallrelevantinformationwhenyoucallorvisit.
For the location of the authorized service center nearest you, please
Themodelnumberofthistoolisfoundonaplateattachedtothemotor
housing. Pleaserecordtheserialnumberinthespaceprovidedbelow.
When ordering repair parts, always give the following information:
MS1ꢀ50LZA
Model No.
Serial No.
987000-016
9-14-07 (REV:01)
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