MK Diamond MK-660 User Manual
www.mkdiamond.com
MK-660 TILE SAW
OWNER'S MANUAL
PARTS LIST &
OPERATING INSTRUCTIONS
Revision 103
Manual Part# 153461
Caution: Read all safety and operating instructions
before using this equipment. This parts list MUST
accompany the equipment at all times.
05.2014
INTRODUCTION
Congratulations on your purchase of a MK-660 Saw. We are certain that you will be pleased
with your purchase. MK Diamond takes pride in producing the nest construction power tools
and diamond blades in the industry.
Operated correctly, your MK-660 Saw should provide you with years of service. In order to help
you, we have included this manual. This owners manual contains information necessary to
operate and maintain your MK-660 Saw safely and correctly. Please take the time to familiarize
yourself with the MK-660 Saw by reading and reviewing this manual.
Read and follow all safety, operating and maintenance instructions.
If you should have questions concerning your MK-660 Saw, please feel free to call our friendly
customer service department at: 800 421-5830
Regards,
MK Diamond
NOTE THIS INFORMATION FOR FUTURE USE:
MODEL NUMBER:
SERIAL NUMBER:
PURCHASE PLACE:
PURCHASE DATE:
NOTE: For your (1) one year warranty to be effective, complete the warranty card
(including the Serial Number) and mail it in as soon as possible.
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TABLE OF CONTENTS
SAFETY
Rules for Safe Operation 4-7
California Proposition 65 Message 8
Electrical Requirements 9-12
Safety Label Locations 13
Product Specications 14
UNPACKING, TRANSPORT and ASSEMBLY
Unpacking 15
Contents 15
Transport 16
Stand 16
STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
Cutting Head Installation 17
Diamond Blade Installation 17-18
Adjustable Cutting Guide Installation 18
Splash Guard Installation 19
Water Pump Installation 19
Pre-Start Inspection 19-20
Connecting the Water Pump 21
Water Pump Setup for Operation 21
Recirculation 21
Setup for Operation 22
Portable Generator 22
Operation
Cleanup 27-28
(Cutting Straight edges, Diagonal Cutting, 45° Miter Cutting, Off-Angle Cutting) 23-26
MAINTENANCE AND TROUBLESHOOTING
Maintenance 28-31
Flow adjustment 31
Blade Dressing 32
Diamond Blade Change-Out 33
Troubleshooting 34-36
EXPLODED VIEW AND PARTS LIST
Exploded View & Parts List 38-40
ACCESSORIES ORDERING and RETURN INSTRUCTIONS
Accessories 41
Ordering Information 42
Return Material Policy 42
Packaging Instructions 42
Authorized Service Centers 42
Contact & Warranty 43
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MK-660 TILE SAW SAFETY
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Read and follow all safety, operating and maintenance instructions. Failure to read and follow
these instructions could result in injury or death to you or others. Failure to read and follow these
instructions could also result in damage and/or reduced equipment life. Safety warnings and
guidelines do not by themselves eliminate danger. They are not substitutes for proper accident
prevention procedures and good judgement.
SAFETY MESSAGES
A safety message alerts you to potential hazards that could hurt you or others. Each safety message is
preceded by a safety alert symbol ( ) and one of three words: DANGER, WARNING, or CAUTION.
DANGER You WILL be KILLED or SERIOUSLY INJURED if you DO NOT follow directions.
WARNING
You CAN be KILLED or SERIOUSLY INJURED if you DO NOT follow directions.
You CAN be INJURED if you DO NOT follow directions. It may also be used to
CAUTION
alert against unsafe practices.
DAMAGE PREVENTION AND INFORMATION MESSAGES
A Damage Prevention Message is to inform the user of important information and/or instructions that
could lead to equipment or other property damage if not followed. Information Messages convey
information that pertains to the equipment being used. Each message will be preceded by the word
NOTE, as in the example below.
NOTE:
Equipment and/or property damage may result if these instructions are not followed.
GENERAL SAFETY PRECAUTIONS AND HAZARD SYMBOLS
In order to prevent injury, the following safety precautions and symbols should be followed at all times!
SAFETY PRECAUTIONS
ALWAYS read this Owner’s Manual before operating the machine. DO NOT operate or
service this equipment before reading this entire manual. Read and understand all warnings, instructions and controls on the machine. Know how to stop the equipment quickly in
case of emergency. It is the operators responsibility to use this machine under safe working conditions and conform with federal, state and local codes or regulations pertaining to
safety, air, pollution, noise etc...
ALWAYS keep the Blade and Belt Guards in place. DO NOT operate this machine with any
guard or safety device removed. A Guard, or any damaged part should be repaired or
replaced immediately.
NEVER operate this equipment without proper protective clothing, shatterproof
glasses, steel-toed boots and other protective devices required by the job. Non-slip
foot wear is recommended.
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MK-660 TILE SAW SAFETY
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PERSONAL PROTECTIVE EQUIPMENT
ALWAYS wear approved respiratory, head, ear and eye protection
when operating this machine.
ON
ACCIDENTAL STARTS!
Before starting the engine/motor, be sure the ON/OFF switch is in the OFF position to prevent accidental starting. Place the ON/OFF switch in the OFF position before performing any
service operation. ALWAYS place the power ON/OFF switch in the OFF position when the
machine is not in use.
ROTATING PARTS
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury. Never operate the motor with covers, shrouds, or guards, removed.
HOT PARTS!
Engine components can become extremely hot from operation. To prevent severe burns,
do not touch these areas while the engine is running, or immediately after it is turned off.
Never operate the engine with heat shields removed.
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NEVER tamper with the governor components or settings to increase the maximum speed.
Severe personal injury and damage to the engine or equipment can result if operated at
speeds above maximum.
ELECTRICAL SHOCK
NEVER touch electrical wires or components while the engine is running. Exposed, frayed or
worn electrical wiring and plugs can be sources of electrical shock which could cause severe
injury or burns. Do not touch the plug with wet hands.
ALWAYS avoid inhalation of and skin contact with silica dust and/or mist. Provide proper
dust removal. Use dust-collection system when applicable.
NEVER operate the machine in an explosive atmosphere or near combustible materials.
Sparks from the cutting-action of this machine can ignite flammable materials, liquids, gases
or dust.
This equipment should not be operated by persons under 18 years of age.
KEEP CHILDREN AWAY
All visitors and children should be kept a safe distance from work area. Maintain a safe
operating distance to other personnel.
MAKE THE WORKSHOP KID PROOF
Make the workshops kid proof by using padlocks, master switches or by removing starter keys.
DO NOT FORCE THE TOOL
A power tool will do a job better and safer operating at the rate for which it was designed.
DO NOT force a tool or an attachment to do a job that it was not designed to do.
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MK-660 TILE SAW SAFETY
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USE PROPER APPAREL
DO NOT wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may
be caught in moving parts. Non-slip footwear is recommended. Wear protective hair covering to contain long hair.
SECURE WORK
Clamps or a vise should be used to hold work whenever practical. Keeping your hands free
to operate a power tool is safer.
DO NOT OVERREACH
Keep proper footing and balance at all times by not overreaching.
DISCONNECT TOOLS
Power tools should always be disconnected before servicing, adjusting or when changing
accessories, such as blades, bits, cutters, and the like.
MAINTAIN TOOLS WITH CARE
Keep tools clean and maintained for the best and safest performance. Always follow
maintenance instructions and examine the machine before use. If any abnormal vibrations
or noises occurs, turn off machine immediately and have the problem corrected before
further use.
REMOVE ADJUSTING KEYS AND WRENCHES
Form a habit of checking to see that keys and adjusting wrenches are removed from
the power tool before it is turned on.
KEEP WORK AREA CLEAN
Cluttered work areas and benches invite accidents. Keep area around machine clear of
obstructions which could cause persons to fall.
DO NOT USE IN DANGEROUS PLACES
DO NOT operate equipment in dangerous or hazardous environments. DO NOT use power
tools in damp or wet locations nor expose them to rain. Always keep the work area well
lighted.
USE RECOMMENDED ACCESSORIES
Consult the owner’s manual for recommended accessories. Using improper accessories
may increase the risk of personal or by-stander injury. Unauthorized equipment
modifications will void all warranties. Manufacturer does not assume responsibility for any
accident due to equipment modifications.
ALWAYS ensure that the machine is on level ground before using.
NEVER STAND ON THE TOOL
Serious injury could occur if a power tool is tipped, or if a cutting tool is unintentionally
contacted.
TRANSPORT
When loading or unloading the machine, use caution. Remove the blade prior to hoisting,
loading and transporting the machine.
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CHECK FOR DAMAGED PARTS
Before using a power tool, check for damaged parts. A guard or any other part that is
damaged should be carefully checked to determine if it would operate properly and
perform its intended function. Always check moving parts for proper alignment or binding.
Check for broken parts and mountings and all other conditions that may affect the
operation of the power tool. A guard, or any damaged part, should be properly repaired or
replaced. Always check the machine for loose bolts before starting.
DIRECTION OF ROTATION
A blade or cutter should always be installed so that rotation is in the direction of the
arrow imprinted on the side of the blade or cutter. It should correspond with the rotational
direction of the motor. Always feed work into a blade against the direction of rotation.
NEVER LEAVE A TOOL UNATTENDED
TURN POWER OFF - Do not leave a tool until it comes to a complete stop. ALWAYS
turn a power tool OFF when leaving the work area, or, when a cut is finished.
NEVER disconnect any "emergency or safety devices". These devices are intended for
operator safety. Disconnection of these devices can cause severe injury, bodily harm, or
even death! Disconnection of any of these devices will void all warranties. Unauthorized
equipment modifications will void all warranties. Manufacturer does not assume
responsibility for any accident due to equipment modifications.
NEVER use this machine with any cutter designed for woodworking.
NEVER operate this equipment when not feeling well due to fatigue, illness or taking medicine.
NEVER operate this equipment under the influence of drugs or alcohol.
On belt driven equipment, overtensioning of belts will result in premature crank and/or bearing
failure.
Whenever necessary, replace nameplate, operation and safety decals when they become
difcult to read.
ALWAYS store equipment properly when it is not being used. Equipment should be stored in
a clean, dry location out of the reach of children
DO NOT lend or rent this equipment without including the Owner's Manual and the Engine/
Motor Manufacturer's Manual.
Check the chemical properties of the material to be cut/grinded and follow all EPA/OSHA
Regulations.
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MK-660 TILE SAW SAFETY
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SILICA DUST WARNING
Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition
may give off dust or mists containing crystalline silica. Silica is a basic component of sand, quartz,
brick clay, granite and numerous other minerals and rocks. Repeated and/or substantial inhalation of
airborne crystalline silica can cause serious or fatal respiratory diseases, including silicosis. In addition, California and some other authorities have listed respirable crystalline silica as a substance
known to cause cancer. When cutting such materials, always follow respiratory precautions.
Use appropriate NIOSH-approved respiratory protection where dust hazard may occur. Paper masks
or surgical masks without a NIOSH approval number are not recommended because they do little to
protect the worker. For more information about respirator programs, including what respirators have
received NIOSH approval as safe and effective, please visit the NIOSH website at:
http://www.cdc.gov/niosh/topics/respirators
Observe OSHA regulations for respirator use (29 C.F.R.§1910.134).
Visit http://www.osha.gov for more information.
CALIFORNIA PROPOSITION 65 MESSAGE
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contain chemicals known (to the State of California) to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:
• Lead, from lead-based paints
• Crystalline silica from bricks, cement and other masonry products
• Arsenic and chromium, from chemically treated lumber
For further information, consult the following sources:
http://www.osha.gov/dsg/topics/silicacrystalline/index.html
http://www.cdc.gov/niosh/docs/96-112/
http://oehha.ca.gov/prop65/law/P65law72003.html
http://www.dir.ca.gov/Title8/sub4.html
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 dust masks that are specially designed to lter out microscopic particles. Where
use of a dust extraction device is possible, it should be used. To achieve a high level of dust collection, use an industrial
HEPA vacuum cleaner. Observe OSHA 29 CFR part 1926.57 and 1926.103.
WARNING
Sawing, grinding and drilling generate dust. Excessive airborne particles may cause irritation to eyes, skin and respiratory
tract. To avoid breathing impairment, always employ dust controls and protection suitable to the material being sawed or
drilled; See OSHA (29 CFR Part 1910.1200).
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MK-660 TILE SAW SAFETY
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ELECTRICAL REQUIREMENTS AND GROUNDING INSTRUCTIONS
In order to prevent electrical shock and injury, the following electrical safety precautions and symbols
should be followed at all times!
WARNING
In case of a malfunction or breakdown, grounding provides a path of least resistance for electrical
current to reduce the risk of electric shock. This tool is equipped with an electric cord which has an
equipment-grounding conductor and a grounding plug. The plug must be plugged into a matching
outlet that is properly installed and grounded in accordance with all local codes and ordinances.
• DO NOT modify the plug provided - if it will not t the outlet, have the proper outlet
installed by a qualied electrician.
• Improper connections of the equipment-grounding conductor can result in a risk of electric
shock. The equipment-grounding conductor is the insulated conductor that has an outer
surface that is green, with or without yellow stripes. If repair or replacement of the electric
cord or plug is necessary, DO NOT connect the equipment-grounding conductor to a live
terminal.
• Check with a qualied electrician or service personnel if the grounding instructions are not
completely understood, or if in doubt as to whether the tool is properly grounded.
• Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles
that accept the tool’s plug.
• Repair or replace a damaged or worn cord immediately.
This tool is intended for use on a circuit that has an outlet that looks like the one shown in Sketch A.
The tool has a grounding plug that looks like the plug illustrated in Sketch A. A temporary adapter,
which looks like the adapter illustrated in sketches B and C, may be used to connect this plug to a
2-pole receptacle as shown in Sketch B, if a properly grounded outlet is not available. The temporary
adapter should be used only until a properly grounded outlet can be installed by a qualied electrician. The green-colored rigid ear, plug, and the like, extending from the adapter, must be connected
to a permanent ground, such as a properly grounded outlet box.
Metal Screw
Grounding
Pin
(A)
ADAPTER
Grounding
Means
(C)
Cover of
Grounded
Outlet Box
Grounding
Pin
(B)
(D)
Circuit and Adapter Information
Use of a temporary adapter is not permitted in Canada.NOTE:
NOTE:
If permanently connected this tool should be connected to a grounded metal permanent
wiring system; or to a system having an equipment - grounding conductor.
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MK-660 TILE SAW SAFETY
ELECTRIC MOTOR SAFETY
For maintenance care and operation of the electric motor, refer to your electric motor instruction booklet furnished with the electric motor. Protect the electric motor from dust as much as possible and keep
ventilating openings clean. Before plugging in the machine, make sure that the outlet voltage is within
the voltage marked on the machines's data plate.
CAUTION
DO NOT spray water on the electric motor. DO NOT touch the plug with wet hands. To reduce
the risk of electrocution, keep all connections dry and off the ground.
DO NOT operate electric motor in an explosive environment.
DO NOT EXPOSE TO RAIN
DO NOT expose to rain or use in damp locations.
WARNING
If operating the equipment in damp locations is unavoidable, ALWAYS use a Ground Fault
Circuit Interrupter, ALWAYS wear rubber gloves and footwear in damp conditions.
DO NOT abuse the cord. Never use the cord to carry the equipment or to pull the plug from
the outlet. Keep the cord away from heat, sharp edges, and moving parts. Replace damaged cords immediately. Damaged cords increase the risk of electric shock.
WARNING
To reduce the risk of electrocution, keep all connections dry and off the ground. A Ground Fault
Circuit Interrupter (GFCI) should be provided on the circuit(s) or outlet(s) to be used for this
machine. Receptacles are available having built-in GFCI protections and may be used for this
measure of safety. When using an extension cord, GFCI should be installed closest to the power
source, followed by the extension cord and lastly, the machine.
WARNING
The water pump requires a GFCI. To reduce risk of electrical shock when operating the machine
with the pump plugged into the 3-pole receptacle on the motor, connect the machine to a GFCI
outlet. See the pump manual and informational tags enclosed separately for all pump information.
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MK-660 TILE SAW SAFETY
WARNING
To avoid the possibility of the appliance or plug receptacle getting wet, position the machine to one
side of a wall mounted receptacle. This will prevent water from dripping into the receptacle or plug. A
"drip loop," shown in the picture below, should be arranged by the user to properly position the power
cord relative to the power source. Use the drip loop as a way to prevent GFCI and plug from getting
wet.
The "drip loop" is that part of the cord below the level of the receptacle (or the connector, if an extension cord is used). This method of positioning the cord prevents the travel of water along the power
cord and coming in contact with the receptacle.
If the plug or receptacle gets wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker
that supplies power to the tool. Then unplug and examine for presence of water in the receptacle.
Power
Cord
Power
Tool
Drip Loop
Supporting
Drip Loop Information
WARNING
Use only extension cords that are intended for outdoor use. These extension cords are
identied by a marking "Acceptable for use with outdoor appliances; store indoors while not
in use." Use only extension cords having an electrical rating not less than the rating of the
product. DO NOT use damaged extension cords. Examine extension cords before using and
replace if damaged. DO NOT abuse extension cords and DO NOT yank on any cord to disconnect. Keep cords away from heat and sharp edges. Always disconnect the extension cord
from the receptacle before disconnecting the product from the extension cord.
ALWAYS make certain that the power source required for the electric motor is correct and always
use the correct NEMA conguration plug. Motors can burn out when the line voltage falls 10% below
the voltage rating of the motor. Failure to use proper voltage will cause the motor to overheat. Make
certain that the correct size grounded (3-wires) extension cord is used.
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MK-660 TILE SAW SAFETY
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WARNING
Use of undersized extension cords result in low voltage to the motor that can result in motor burnout
and premature failure. MK Diamond warns that equipment returned to us showing signs of being run
in a low voltage condition, through the use of undersized extension cords,will be repaired or replaced
totally at the customer’s expense. There will be no warranty claim.
To choose the proper extension cord,
• Locate the length of extension cord needed in the table below.
• Once the proper length is found, move down the column to obtain the correct
AWG size required for that length of extension cord.
EXTENSION CORD LENGTH
Nameplate
Amperes
0 - 5 16 16 16 14 12 12
115V 25' 50' 75' 100' 150' 200'
250V 50' 100' 150' 200' 300' 400'
5.1 - 8 16 16 14 12 10 •
8.1 - 12 14 14 12 10 • •
12.1 - 15 12 12 10 10 • •
15.1 - 20 10 10 10 • • •
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MK-660 TILE SAW SAFETY
SAFETY LABEL LOCATIONS
The warning labels contain important safety information. Please read the information contained on
each safety label. These labels are considered a permanent part of your saw. If a label comes off or
becomes hard to read, contact MK Diamond or your dealer for a replacement.
Label A
!
WARNING
For Your Own Safety Read Instruction Manual
Before Operating Saw.
Wear Eye Protection.
Disconnect Saw Before Servicing, when Changing
Cutting Wheels and Cleaning.
Use Tool Only with Smooth Edge Cutting Wheels
Free of Openings and Grooves.
Replace Damaged Cutting Wheel Before Operating.
Do Not Fill Water Bath Above Water Fill Line.
See Manual for Pump Replacement.
Label A
!
NOTICE
Most Motor Problems are caused by improper
voltage and extension cords. Cord should be
one-piece and short as possible. Cord
selection should match the following table.
1-2 H.P.
115v 230v
25’
100’
50’
150’
75’
250’
Max. Cord Length
Max. Cord Length
Max. Cord Length
No. 12 Wire
No. 10 Wire
No. 8 Wire
Label B
FOR INFORMATIONON
SERVICE OR
WARRANTY
PLEASE CALL
1-800-474-5594
Label DLabel C
Tile Master Label Sheet Part#166012
Label C
Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in
their composition may give off dust or mists containing crystalline silica. Silica is a basic
component of sand, quartz, brick clay, granite and numerous other minerals and rocks.
Repeated and/or substantial inhalation of airborne crystalline silica can cause serious
or fatal respiratory diseases, including silicosis. In addition,California and some other
authorities have listed respirable crystalline silica as a substance known to cause cancer.
Label D Label E Label F
!
WARNING
Label B
For manuals and parts
lists scan the QR code
with your smart phone
Label G
CAUTION
!
This saw is to be used
with a Ground Fault
Circuit Interrupter.
CAUTION
!
Receptacle is for
water pump only.
125V, .6 amps max.
Label E Label F
Decal/Label Location Description
A Cutting Head Front Warning - Read Owner's Manual
B Cutting Head Front Warning - Silica Warning
C Cutting Head Back Notice - Voltage / extension cords
D Cutting Head Back Service / Warranty
E Cutting Head Back Caution - Use with GFCI only
F Cutting Head Back Caution - Receptacle for water pump
G Frame QR Manuals (Not Shown)
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MK-660 TILE SAW SAFETY
PRODUCT SPECIFICATIONS
The MK-660 Saw is a versatile Tile Saw. Operated and used according to this manual, the
MK-660 will provide years of dependable service.
GENERAL DESCRIPTION
The MK-660 Saw is engineered as a tabletop or stand mounted wet tile saw. The saw includes a
powerful 120v electric motor. The saw is capable of cutting tile up to fourteen (14) inches in length.
The saw can cut an object two (2) inches thick in one pass.
MOTOR SPECIFICATIONS
Motor specifications for the MK-660 Saw are listed in the table below:
Voltage 120v
Motor Only Amperage 8.8 a
Frequency 60Hz
RPM 3500 rpm
Horse Power 3/4 hp
Weight 53 lbs.
BLADE CAPACITY
The MK-660 Saw uses a seven (7) inch (178mm) diameter, wet cutting continuous rim, MK Diamond
blade with a five-eighths (5/8) inch (15.875 mm) arbor.
TILE TYPES
The MK-660 Saw can cut a variety of tile types including stone, masonry, and lapidary products.
NOTE:
The MK-660 Saw is not designed to cut plastic or metals.
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