OWNER’S OPERATING MANUAL
210mm COMPOUND MITRE SAW
MODEL CMS812
IMPORTANT NOTICE:
This Mitre Saw is designed for light consumer use. It is NOT designed for trade
or industrial use and is not covered by warranty for use in these applications.
THANKYOU FOR BUYING A RYOBI MITRE SAW
Your new Mitre Saw has been engineered and manufactured to Ryobi's high standard for dependability,
ease of operation and operator safety. Properly cared for, it will give you years of rugged, trouble free
performance.
CAUTION: Carefully read through this entire owner's manual before using your drill.
Pay close attention to the Rules for Safe Operation, Warnings and Cautions. If you use your saw properly and
only for what it is intended, you will enjoy years of safe, reliable service.
Thank you again for buying Ryobi tools.
SAVE THIS MANUAL FOR FUTURE REFERENCE.
SPECIFICATIONS:
• Power Input .......................... 1200 watts
• No Load Speed...................... 4500 r.p.m.
• Blade Size .............................. 210mm
• Blade Bore Size .................... 16mm
• TCT Blade .............................. 24 tooth
• Cutting Capacities:
90° Cross Cut ........................50mm x 120mm
Bevel Cut................................25mm x 120mm
45° Compound Mitre Cut......25mm x 90mm
Mitre Cut ................................55mm x 85mm
• Weight .................................... 7kg
STANDARD ACCESSORIES:
• Dust Bag
RULES FOR SAFE OPERATION
The purpose of safety rules is to attract your attention to
possible dangers. The safety symbols and the explanations with
them, require your careful attention and understanding.
The safety warnings by themselves do not elimimate any danger.
The instruction or warnings they give are not substitutes for
proper accident prevention measures.
SAFETY ALERT SYMBOL Indicates caution or
warning. May be used in conjunction with
other symbols or pictures.
WARNING: Failure to obey a safety warning
can result in serious injury to yourself or to
others. Always follow the safety precautions to
reduce the risk of fire, electric shock and
personal injury.
DOUBLE INSULATION
Double insulation is a concept in safety in electric power tools,
which eliminates the need for earth grounding. Whenever
there is electric current in the tool there are two complete sets
of insulation to protect the user. All exposed metal parts are
isolated from the internal metal motor components with
protecting insulation.
WARNING: 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 related to avoiding
electrical shock.
IMPORTANT: Servicing of a tool 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 Ryobi Authorised
Service Centre for repair. When servicing, use only identical
Ryobi replacement parts.
WARNING: Do not attempt to operate this tool until you have
read thoroughly and completely understood the safety rules, etc.
contained in this manual. Failure to comply can result in
accidents involving fire, electric shock or serious personal injury.
Save owners manual and review frequently for continual safe
operation and for instructing others who may use this tool.
The operation of any 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 eye glasses or standard safety glasses with side shields.
1. KNOW YOUR POWER TOOL. Read owners manual carefully.
Learn its applications and limitations as well as the specific
potential hazards related to this tool.
2. GUARD AGAINST ELECTRICAL SHOCK BY PREVENTING
BODY CONTACT WITH GROUNDED SURFACES.
For example, pipes, radiators, ranges, refrigerator enclosures.
3. KEEP WORK AREA CLEAN. Cluttered areas and benches
invite accidents.
4. AVOID DANGEROUS ENVIRONMENT. Don't use power
tools in damp or wet locations or expose to rain. Keep work
area well lit.
5. KEEP CHILDREN AND VISITORS AWAY. Visitors should wear
safety glasses and be kept a safe distance from work area.
Do not let visitors contact tool or extension cord.
6. STORE IDLE TOOLS. When not in use, tools should be stored
in a dry and high or locked-up place, out of reach of children.
7. DON'T FORCE TOOL. It will do the job better and safer at the
rate at which it was designed.
8. USE RIGHT TOOL. Don't force a small tool or attachment to
do the job of a heavy duty tool. Don't use tool for any purpose
not intended.
9. DRESS PROPERLY. Do not wear loose clothing or jewellery.
They can be caught in moving parts. Rubber gloves and
non-skid footwear are recommended when working outdoors.
Also wear protective hair covering to contain long hair.
10. ALWAYS WEAR SAFETY GLASSES. Everyday eyeglasses
have only impact resistant lenses, they are not safety glasses.
11. PROTECT YOUR LUNGS. Wear a dust mask if operation is dusty.
12. PROTECT YOUR HEARING. Wear hearing protection during
extended periods of operation.
13. DON'T OVERREACH. Keep proper footing and balance at all
times. Do not use tool on a ladder or unstable support.
Secure tools when working at elevated levels.
14. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean
for better and safer performance. Follow instructions for
lubricating and changing accessories.
15. DISCONNECT TOOLS. When not in use, before servicing, or
when changing attachments, blades, bits, cutters, etc. all
tools should be disconnected.
16. REMOVE ADJUSTING KEYS AND WRENCHES. Before
turning it on, Form a habit of checking to see that keys and
adjusting wrenches are removed from tool.
17. NEVER USE IN AN EXPLOSIVE ATMOSPHERE. Normal
sparking of the motor could ignite fumes.
18. KEEP HANDLES DRY, CLEAN AND FREE FROM OIL AND
GREASE. Always use a clean cloth when cleaning. Never use
brake fluids, gasoline, petroleum based products, or any
strong solvents to clean your tool.
19. 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.
20. CHECK DAMAGED PARTS. Before further use of the tool, a
guard or any other part that is damaged should be carefully
checked to determine that it will operate properly and perform
its intended function. Check for alignment of moving parts,
binding of moving parts, breakage of parts and any other
conditions that may affect its operation. A guard or any other
part that is damaged should be properly repaired or replaced
by an authorised service centre.
21. DO NOT USE TOOL IF SWITCH DOES NOT TURN IT ON
AND OFF. Have defective switches replaced by authorised
service centre.
22. DO NOT OPERATE THIS TOOL WHILE UNDER THE
INFLUENCE OF DRUGS, ALCOHOL OR ANY MEDICATION.
23. SUPPLY CORD. If the supply cord is damaged, it must be
replaced by the manufacturer or its service agent or similarly
qualified person in order to avoid a hazard.
Due to Ryobi's continued product refinement policy,
product features and specifications can and will change
without notice. Check current features and specifications with your Ryobi retailer.
SAVE THESE INSTRUCTIONS
Page 2
Your Compound Mitre Saw has been shipped completely
assembled except for the blade.
• Remove all loose parts from the carton. Separate and check
with the list of loose parts. See figure 1.
• Remove the packing materials from around your saw.
• Carefully lift saw from the carton and place it on a level
work surface. Although small, this saw is heavy. To avoid
back injury, get help when needed.
• Do not discard the packaging materials until you have
carefully inspected the saw, identified all loose parts and
satisfactorily operated your new saw.
• Your saw has been shipped with the saw arm locked in the
down position. To release saw arm, pull out the lock down
pin.
• Lift the saw arm by the handle. Hand pressure should
remain on the saw arm to prevent sudden rise upon release
of the lock down pin.
• Examine all parts to make sure no breakage or damage has
occurred during shipping.
If any parts are damaged or missing, do not attempt to plug in
the power cord and turn the switch on until the damaged or
missing parts are obtained and are installed correctly.
UNPACKING
FEATURES
TOOLS NEEDED
WARNING: If any parts are missing, do not
operate this tool until the missing parts are
replaced. Failure to do so could result in
serious personal injury
■ KNOW YOUR COMPOUND MITRE SAW
Before attempting to use your saw, familiarise yourself with all
the operating features (Fig 2, 2a & 2b) and safety
requirements.
■ 1200 WATT MOTOR
Your CMS812 Compound Mitre Saw has a powerful 1200 watt
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.
■ 210mm BLADE
A 210mm saw blade is included with your compound mitre
saw. It will cut materials up to 55mm thick or 120mm wide,
depending upon the thickness of the material and the setting
at which the cut is being made.
WARNING: Do not allow familiarity with
your saw to make you careless. Remember
that a careless fraction of a second is
sufficient to inflict severe injury.
The following tools (not included) are needed for checking adjustments of your saw and for installing the blade.
Fig.1
Page 3
Arbor
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 mitre table.
Cross Cut
A cutting or shaping operation made across the grain of the
workpiece.
Compound Mitre Cut
A compound mitre cut is a cut made using a mitre angle and a
bevel angle at the same time.
Freehand
Performing a cut without using a fence, mitre guage, fixture,
work clamp, or other proper device to keep the work piece
from twisting or moving during the cut.
Gum or Resin
A sticky, sap based residue from wood products.
Mitre Cut
A cutting operation made with the blade at any angle other
than 90° to the fence.
Revolutions Per Minute (RPM)
The number of turns completed by a spinning object in one
minute.
Saw Blade Path
The area along which the blade travels.
Set
The distance that the tip of the saw blade tooth is bent (or set)
outward from the side of the blade.
Throw-Back
Throwing of a workpiece in a manner similar to a kickback.
Usually associated with a cause other than the kerf closing,
such as a workpiece not being against the fence, being
dropped into the blade, or being placed inadvertently in
contact with the blade.
Through Sawing
Any cutting operation where the blade extends completely
through the thickness of the workpiece.
Workpiece
The item on which the cutting operation is being done. The
surfaces of a workpiece are commonly referred to as faces,
ends and edges.
Zero Clearance Throat Plate
A plastic throat plate inserted in the mitre table that allows for
blade clearance. When you make your first cut with your
compound mitre saw, the saw blade cuts a slot through the
throat plate the exact width of the blade. This provides for a
zero clearance kerf that minimises workpiece tear out.
No Hands Zone
The area between the marked lines on the left and right side
of the mitre table base. This zone is identified by no hands
zone labels placed inside the marked lines on the mitre table
base.
GLOSSARY OF TERMS FOR WOODWORKING
MAINTENANCE
Page 4
WARNING: When servicing, use only identical Ryobi
replacement parts. Use of any other part may create a
hazard or cause product damage.
■ GENERAL
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, carbon dust, etc.
It has been found that electric tools are subject to accelerated
wear and possible premature failure when they are used on
fibreglass boats, sports cars, wallboard, spackling compounds,
or plaster. The chips and grinding from these materials are
highly abrasive to electric tool pars such as bearings, brushes,
commutators, etc. Consequently, it is not recommended that
this tool be used for extended work on any fibreglass
material, wallboard, spackling compounds, or plaster. During
any use on these materials it is extremely important that the
tool is cleaned frequently by blowing with an air jet.
■ 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 lubrication
is required.
■ EXTENSION CORDS
The use of any extension cord will cause some loss of power.
To keep power loss to a minimum and to prevent tool
overheating, use an extension cord that is heavy enough to
carry the current the tool will draw.
A wire gauge size (A.W.G.) of at least 16 is recommended for
an extension cord 50 feet or less in length. When working
outdoors, use an extension cord that is suitable for outdoor
use.
If the supply cord is damaged, it shall be replaced by the
manufacturer or its service agent in order to avoid a hazard.
Disconnect from the supply immediately, if the supply cable is
damaged.
Take care not to expose this tool to rain.
WARNING: Do not at any time let brake fluids,
gasoline, petroleum based products,
penetrating oils, etc. come into contact with
plastic parts. They contain chemicals that can
daamage, weaken or destroy plastic.
CAUTION: Keep extension cords away from the
cutting area and position the cord so that it will
not get caught on timber, tools, etc. during
cutting operation.
WARNING: Check extension cords before each
use. If damaged, replace immediately. Never use
tool with a damaged cord since touching the
damaged area could cause electrical shock
resulting in serious injury.
WARNING: Always wear safety goggles or
safety glasses with side sheilds during power
tool operation or when blowing dust.
If operation is dusty, also wear a dust mask.
Page 5
Upper Blade Guard
Mitre Table Lock Knob
Rear Fence
Lower Blade Guard
Mitre Table
Mitre Scale
Throat Plate
■ CMS812 210mm Compound Mitre Saw
Fig.2
Fig.2a Fig.2b
Trigger Switch
Bevel Scale
45° Stopper
0° Stopper
Bevel Lock
Handle
Lock Down Pin
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