MK Diamond Products MK-660 SERIES System manual

MK-660 SERIES
CAUTION:
Read all safety and
operating instructions
before using this
equipment
TILE SAW
OWNER’S MANUAL &
OPERATING INSTRUCTIONS
Enter the Serial Number of your new saw in the
space below. The Serial Number is located on the
rear of the Cutting Head.
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.
SERIAL NUMBER:

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 2
INTRODUCTION
We at MK Diamond want to congratulate you on selecting the MK-660 Tile Saw. We are certain that you will
be pleased with your purchase. MK Diamond takes pride in producing the finest products in the industry.
Operated correctly, your MK-660 should provide you with years of quality service. In order to help you, we
have included this manual. This owners manual contains information necessary to operate and maintain your
MK-660 safely and correctly. Please take a few minutes to familiarize yourself with the MK-660 by reading
and reviewing this manual.
If you should have questions concerning your MK-660, please feel free to call our friendly customer service
department at: 800 421-5830
Regards,
MK Diamond

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 3
TABLE OF CONTENTS
Page
SAFETY:
Safety Messages 4
Damage Prevention Message 4
General Safety Precautions and Hazard Symbols 4
California Proposition 65 Message 6
Electrical Requirements and Grounding Instructions 7
Safety Label Locations 9
Tile Saw Specific Warnings 9
Product Specifications 10
UNPACKING, TRANSPORT, UNIVERSAL STAND, and ASSEMBLY
Unpacking 11
Contents 11
Transport 12
Universal Stand 12
Assembly 13
SETUP, ADJUSTMENT AND OPERATION
Setup 16
Adjustment and Operation 19
Cleanup 23
MAINTENANCE AND TROUBLESHOOTING
Maintenance 25
Troubleshooting 30
EXPLODED VIEW AND PARTS LIST
Exploded View 34
Parts List 35
THEORY
Theory of Diamond Saws 37
ACCESSORIES
Accessories 38
ORDERING and RETURN INSTRUCTIONS
Ordering Information 39
Return Material Policy 39
Packaging Instructions 39
Authorized Service Centers 39
Manual Part No. 153461 Revision No. 08/01

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 4
SAFETY
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 MESSAGES:
Safety messages inform the user about potential hazards that could lead to injury, death and/or equipment
damage. Each safety message will be preceded by one of the following (3) three words that identify the
severity of the message.
Not following instructions WILL lead to DEATH or SERIOUS INJURY
Not following instructions COULD lead to DEATH or SERIOUS INJURY
Not following instructions CAN lead to injury
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:
KEEP GUARDS IN PLACE.
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.
DO NOT USE IN DANGEROUS ENVIRONMENTS.
Do not use power tools in damp or wet locations nor expose them to rain. Always keep the work area well
lighted.
KEEP CHILDREN AWAY.
All visitors and children should be kept a safe distance from work area.
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.
USE THE RIGHT TOOL.
Do not force a tool or an attachment, to do a job that it was not designed to do.
In order to prevent injury, keep guards in place and in working order at all times.

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 5
SAFETY
USE THE PROPER EXTENSION CORD.
If using an extension cord make sure it is in good condition first. When using an extension cord, be sure to
use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in
line voltage that will result in a loss of power and overheating. TABLE 1, Page 8 shows the correct AWG
size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gage.
The smaller the gage number, the heavier the cord.
WEAR 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.
ALWAYS USE SAFETY GLASSES.
Safety glasses should always be worn when working around power tools. In addition, a face,
dust mask or respirator should be worn if a cutting operation is dusty. Everyday eyeglasses only
have impact resistant lenses and may not prevent eye injury-they are NOT safety glasses.
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.
MAINTAIN TOOLS WITH CARE.
Keep tools clean for the best and safest performance. Always follow maintenance instructions for
lubricating, and when changing accessories.
DISCONNECT TOOLS.
Power tools should always be disconnected before servicing or when changing accessories, such as blades,
bits, cutters, and the like.
REDUCE THE RISK OF UNINTENTIONAL STARTING.
Make sure the ON/OFF Switch is in the OFF position before plugging in a power tool.
USE RECOMMENDED ACCESSORIES.
Consult the owner's manual for recommended accessories. Using improper accessories may increase the
risk of personal or by-stander injury.
NEVER STAND ON THE TOOL.
Serious injury could occur if a power tool is tipped, or if a cutting tool is unintentionally contacted.
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 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.
DIRECTION OF FEED.
Always feed work into a blade or cutter against the direction of rotation. A blade or cutter should always be
installed such that rotation is in the direction of the arrow imprinted on the side of the blade or cutter.
NEVER LEAVE A TOOL RUNNING 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.

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 6
SAFETY
Hazard Symbols:
ELECTRICAL SHOCK!
Never touch electrical wires or components while the motor is running. Exposed, frayed or worn
electrical motor wiring can be sources of electrical shock that could cause severe injury or burns.
ACCIDENTAL STARTS!
Before plugging the equipment into an electrical outlet, be sure the ON/OFF Switch is in the OFF
position to prevent accidental starting. Unplug the power tool before performing any service operation.
ROTATING OR MOVING PARTS!
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury. Never operate a
power tool with covers, shrouds, or guards removed.
Sawing and drilling generates 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). Diamond Blades improperly used are
dangerous. Comply with American National Standards Institute Safety Code, B7.1 and, Occupational Safety
and Health Act covering Speed, Safety Guards, Flanges, Mounting Procedures, General Operating Rules,
Handling, Storage and General Machine Conditions.
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 and cement and other masonry products and
•Arsenic and chromium, from chemically treated lumber
For further information, consult the following sources:
http://www.osha-slc.gov/sltc/silicarystalline/index.html
http://www.oehha.org/prop65/out_of_date/6022kLstA.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 those dust masks that are specially designed to filter out microscopic particles.

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 7
SAFETY
ELECTRICAL REQUIREMENTS AND GROUNDING INSTRUCTIONS:
In order to prevent potential electrical shock and injury, the following electrical safety precautions and symbols
should be followed at all times!
In case of a malfunction or breakdown, grounding provides a path of least resistance for electric
current to reduce the risk of electric shock. This tool is equipped with an electric cord having 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 fit the outlet; have the proper outlet installed by a
qualified 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 qualified 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
of Figure 1. The tool has a grounding plug that looks like the plug illustrated in Sketch A of FIGURE
1. 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 qualified electrician. The green-colored rigid ear,
lug, and the like, extending from the adapter, must be connected
to a permanent ground such as a properly grounded outlet box.
NOTE: Use of a temporary adapter is not permitted in Canada.
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 the Saw. Receptacles are available having built-in GFCI protections and may be used for this
measure of safety.
When using an extension cord, the GFCI should be installed closest to the power source, followed
by the extension cord and lastly, the saw.
Metal Screw
Cover of Grounded
Outlet Box
(A)
(B)
(C)
(D)
ADAPTER
Grounding
Means
Grounding
Pin
Grounding
Pin
FIGURE 1

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 8
SAFETY
To avoid the possibility of the appliance plug or receptacle getting wet, position the saw to one side
of a wall mounted receptacle. This will prevent water from dripping onto the receptacle or plug. A
"drip loop," shown in FIGURE 2, should be arranged by the user to properly position the power cord
relative to the power source.
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.
Use only extensions cords that are intended for outdoor use. These extension cords are identified
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 disconnection the
product form the extension cord.
To reduce the risk of electrocution, keep all connections dry and off the ground. Do not touch the
plug with wet hands.
Use of undersize 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 customers expense. There will be no warranty claim.
To choose the proper extension cord,
•Locate the length of extension cord needed in TABLE 1 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 Minimum Gage for Length
Volts Total Length of Cord in Feet
120V 25 ft. 50 ft. 100 ft 150 ft.
AWG AWG AWG AWG
18 16 14 12
TABLE 1
Supporting
Surface
Power
Tool
Drip Loop
Power
Cord
FIGURE 2

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 9
SAFETY
SAFETY LABEL LOCATIONS:
Safety labels are located according to Figures 1 and 2 below. The 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
Item Location Description Part No.
1A. Cutting Head Front Caution Operating Instructions 155214
1B. Cutting Head Rear Serial Number and Specifications 156561
1C. Cutting Head Front Motor Reset 154409
2A Pump Left Side Warning Connect to Grounded Receptacle N/A
2B Pump Right Side Pump Specifications N/A
TILE SAW SPECIFIC WARNINGS:
Wear eye protection.
Use splash hood for every operation for which it can be used.
Disconnect saw before servicing, when changing cutting blades, and cleaning.
Use tool only with smooth edge cutting blades free of openings and grooves.
Replace damaged cutting blade before operating.
A
B
C
1
2
A
B
C

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 10
SAFETY
PRODUCT SPECIFICATIONS:
The MK-660 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 Tile Saw is engineered as a tabletop or stand mounted wet tile saw. The saw includes a powerful
115v totally enclosed direct drive DC motor with a thermal protective overload. The saw is capable of cutting
tile up to fourteen (14) inches in length, or diagonally cutting tile up to ten (10) inches. The saw can cut an
object one and one-half (1-1/4) inches thick in one pass.
Motor Specifications:
Motor specifications for the MK-660 are listed in Table 2 below.
Voltage 115 v
Motor Amperage 8.8 a
Frequency 60 Hz
RPM 3500 rpm
Horse Power 3/4 hp
Weight 53 lbs
Table 2
Thermal Overload Protection:
The motor is protected by a thermal overload equipped with a manual reset.
Blade Capacity:
The MK-660 uses a seven (7) inch (178 mm) diameter, wet cutting continuous rim, MK Diamond blade with a
five-eighths (5/8) inch (15.875 mm) arbor.
Tile Types:
The MK-660 can cut a variety of tile types including Porcelain, Terracotta, Marble, Quarry and Slate, or almost
any other non-ferrous material.
NOTE:
The MK-660 is not designed to cut plastic or ferrous (metals) material.

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 11
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
UNPACKING:
Your MK-660 has been shipped from the factory thoroughly inspected. Only minimal assembly is required.
Use proper lifting techniques when lifting the MK-660.
If not done, remove the MK-660, accessory box from the carton.
CONTENTS:
In your container, you will find one (1) MK-660 frame and water pan, one (1) MK-660 cutting head, (1) cutting
head height adjusting knob, (1) height adjusting knob flat washer, one (1) 7-inch wet cutting continuous rim
diamond blade, one (1) adjustable cutting guide, one (1) electric water pump, one (1) pump discharge fitting,
one (1) cooling transfer tube, one (1) flow adjusting clamp, one (1) drain plug, one (1) blade wrench one (1)
inner flange wrench, (1) splash guard, one (1) owners manual, one (1) pump manual and one (1) warranty
card.
MK-660 Frame
and Water Pan MK-660 Cutting Head Height Adjusting Knob Height Adjusting Knob Flat Washer Diamond Blade
Adjustable
Cutting Guide Electric Water Pump Pump Discharge Fitting Cooling Transfer Tube Flow Adjusting Clamp
Drain Plug Blade Nut
Wrench Inner Flange Wrench Splash Guard Owners Manual
Pump
Manual Warranty Card

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 12
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
TRANSPORT:
1. The MK-660 weighs approximately fifty-three (53) pounds; use care when transporting.
2. Never transport the MK-660 with water in the Water Pan.
The MK-660 is designed with a rigid frame and removable Cutting Head. Always use proper lifting techniques
when lifting the MK-660.
To lift the saw, grasp the front and back of the frame at the lift points shown blelow.
UNIVERSAL STAND:
The MK-660 weighs fifty-three (53) pounds; follow the guidelines for transport in the
TRANSPORT section, when placing it on the stand.
Note: If using the MK Diamond, Universal Stand, follow the following steps.
Lift Point
Lift Point
(A)
Open the Universal Stand
and place on flat surface
(B)
Remove Water Pan (C) Orient the Saw
to the Stand
(D)
Seat Left (Post) Side of saw
onto stand between stand
Orientation Pin
(E)
Seat Right Side of saw onto
stand between stand and
Register Angle
(F)
Reinstall the Water Pan
Slide Water Pan
out front of Saw
Slide Water Pan
in back of Saw
Left side
of stand
Left Side
of Saw
Right Side
of Saw
Right Side
of Stand
Orientation
Pin
Seat Left (Post)
Side of Saw
Left Side
of Stand
Right Side
of Stand
Right Side
of Saw
Cutting Head
Register
Angle

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 13
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
ASSEMBLY:
Follow the assembly instructions to prepare your MK-660 for operation.
1. Cutting Head Installation:
NOTE: If the Cutting Head is installed, go to step 2.
2. Diamond Blade Installation:
NOTE: When installing the Retaining Screw, do not “cross-thread" and DO NOT over tighten the screw.
(B)
Align Cutting Head Pivot Hole to
the Post, Pivot Shaft
(C)
Verify the Cutting Head is
completely installed and seated
on the Pivot Shaft
Pivot Hole
Pivot Shaft
Post
Turn Clockwise
to tighten
(A)
Loosen the Blade Guard
Retaining Screw
(C)
Using the Blade Nut Wrench,
loosen and then remove the
Retaining Nut and Outer Flange
Turn counter-
clockwise to
loosen
Retaining Nut and
Outer Flange
(B)
Open the Outer Blade Guard to
expose the Retaining Nut and
Flanges
Outer Blade
Guard
Blade
Wrench
(A)
Place the Flat Washer onto the
Height Adjusting Knob
Flat Washer
Height
Adjusting Knob
(D)
Install the Cutting Head onto the
Post, Pivot Shaft and Install
The Adjusting Knob
Completely
Installed
Turn counter-
clockwise to
loosen
Blade Guard
Retaining Screw
Pivot Up
to Open

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 14
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
3. Adjustable Cutting Guide Installation:
NOTE: The Adjustable Cutting Guide can be used on either side of the Diamond Blade.
(D)
Locate the Inner Flange Wrench
Retaining Holes
(F)
Verify the Blade is seated on
the Blade Shaft and direction
of rotation is correct
(G)
Install the Retaining Nut and Outer
Flange, Hold the Shaft using the
Inner Flange Retaining Wrench and
tighten using the Blade Wrench
(A)
Loosen Adjustable Cutting
Guide retaining thumbscrew
and place it over the Movable
Cutting Table Ruler/Stop
(B)
Place the Adjustable Cutting
Guide onto the Movable Cutting
Table Ruler/Stop and tighten the
retaining thumbscrew
Retaining
Holes
Rotation Direction
Retaining
Nut and
Outer Flange
Turn counter-
clockwise to loosen Adjustable
Cutting Guide Turn clockwise
to tighten Adjustable
Cutting Guide
(E)
Install Diamond Blade
onto Blade Shaft
Diamond
Blade
Blade
Shaft
(I)
Tighten the Outer Blade Guard
Pivot Screw
(H)
Close the Outer Blade Guard
and tighten the Blade Guard
Retaining Screw
Hold in
position Rotate clockwise
to tighten
Blade Guard
Retaining Screw
Rotate clockwise
to tighten Rotate clockwise to tighten
Blade Guard
Pivot Screw
Ruler/Stop Ruler/Stop

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 15
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
4. Splash Guard Installation:
5. Water Pump Preparation: :
(A)
Install Water Pump Discharge
Fitting
(A)
Install the retaining thumbscrew
through the washer and Splash
Guard, then align to the hole
found on back of the Blade Guard
(B)
Install the Splash Guard
onto the Blade Guard
Retaining
Hole
Thumbscrew
Splash
Guard
Turn clockwise
To tighten
(B)
Press one end of the Cooling
Transfer Tube onto the Water
Pump Discharge Fitting
Turn clockwise
to tighten
(C)
Slide Cooling Flow Adjusting
Clamp onto the Cooling
Transfer Tube
Discharge
Fitting
Press on
Flow Adjusting
Clamp
Press on
Cooling
Transfer
Tube

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 16
SETUP, ADJUSTMENT and OPERATION
SETUP:
1. Pre-start Inspection:
Prior to beginning work, a pre-start inspection of the saw should be preformed.
2. Connecting the Water Pump:
1. To prevent the possibility electrical shock, the MK-660 MUST be de-energized when
connecting the Water Pump.
2. To prevent the possibility of electrical shock, use only MK Diamond qualified replacement
parts
NOTE: To prevent pump damage, the Water Pump must be disconnected if cutting with a Dry Blade.
(A)
Ensure the ON/OFF Switch
is in the OFF position
(B)
Verify the Movable Cutting
Table moves freely
(C)
Inspect the Diamond Blade for
damage – verify the blade is
correct for the material being cut
(D)
Inspect the Pump Assembly for
damage – ensure the cord is
free of cracks or cuts
(E)
Inspect the MK-660 for
damage – ensure the cord is
free of cracks or cuts
Press
together
Verify ease of movement
(See Maintenance section
if problems exist)
Inspect for
damage
Inspect for
damage
Inspect for
cracks or cuts
Off
Position
(A)
Connect the Cooling Transfer
Tube to the inlet connection of
the Blade Guard
(B)
Connect the Water Pump power
cord to the connection found on
the back of the motor
Press on
Pump
Connection
ON/OFF
Switch
Inspect for cracks,
de-bonding, etc.
Cooling
Transfer
Tube
Inlet
connection

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 17
SETUP, ADJUSTMENT and OPERATION
3. Water Pump Setup for Operation:
The Water Pump can be setup for operation in two ways, External Water Source or Re-circulation.
NOTE: If using a dry blade for operation, DO NOT connect the water pump.
I. External Water Source:
This is the preferred method of cooling.
II. Re-circulation:
NOTE: When using the re-circulation method, the water should be changed often for longer pump life.
(A)
Remove the Drain plug (B) Place the Water Pump
In an external container
(C)
Fill the external container until
water completely covers the
Water Pump suction
(D)
Place an external catch Basin
below the Water Pan drain hole
(A)
Ensure the Drain Plug is
installed in the Water Pan
(C)
Fill the Water Pan until water
completely covers the Water
Pump suction
Cover Pump
Suction
Drain Plug Water Pump
In container
External
Container
Catch
Basin
Drain Plug
Installed
Water
Pump
Cover Pump
Suction
(B)
Place the Water Pump in the
back of the Water Pan

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 18
SETUP, ADJUSTMENT and OPERATION
4 MK-660 Setup for Operation:
1. Before powering or starting, check for damage that could prevent this equipment from proper
operation or performing it’s intended function. Check for binding and alignment of moving
parts. Check for damaged, broken, or missing parts.
2. Verify the On/Off switch is in the OFF position.
3. Before connecting the MK-660 to a power supply, be sure the voltage, cycle and phase of the
job site power source meet the requirements of TABLE 3
VOLTAGE: 115v
CYCLE: 60hz
PHASE: 1-phase
TABLE 3
4. If using an extension power cord, make sure the length and wire gauge correspond to he
requirements listed in TABLE 1 on page 8. An extension power cord that is too small in wire
gauge (diameter), or too long in length, will cause the motor to overheat and could cause
premature failure.
5. Use an approved Ground Fault Circuit Interrupter (GFCI)
6. Do not cover the motor vents as this could lead to motor overheating.
NOTE: In order to avoid breaker tripping, a 20-amp circuit breaker should be used.
Portable Generator:
If using a portable generator to provide power, ensure the generator meets the following minimum
requirements: 8 KW 120/240 volts 66.7/33.3 amps Single Phase
(A)
Ensure the ON/OFF Switch is
in the OFF position
(B)
Plug MK-660 into the GFCI (C) Plug the GFCI into the Power
source
GFCI
GFCI Plugged
Into Power
Source
Off
Position
ON/OFF
Switch

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 19
SETUP, ADJUSTMENT and OPERATION
ADJUSTMENT and OPERATION:
1. Cutting Straight Edges:
DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for which it was
designed.
(A)
Loosen the Adjustable Cutting
Guide retaining thumbscrew
(B)
Position the Adjustable Cutting
Guide to desired cut length
indicated inside the diamond
(C)
Tighten the retaining
thumbscrew
(D)
Place the tile against the
Ruler/Stop and Cutting Guide
(E)
Turn the motor ON (F)
Verify cooling flow on both sides
of the blade (See Maintenance
Section to adjust flow)
(G)
Perform the cut (H)
Turn the motor OFF when work
is complete
Desired Cut length
indicated here Turn Clockwise
to tighten
Adjustable
Cutting Guide
Ruler/Stop Cooling Flow
Points
Hold Work
in Position
Direction
of Cut
Off
Position
ON/OFF
Switch
ON/OFF
Switch
On
Position
Turn Counter-
clockwise to loosen

MK-660 Revision 01/02, Effective Date January 10, 2002 Page 20
SETUP, ADJUSTMENT and OPERATION
2. Diagonal Cutting:
NOTE: To cut diagonal, the Dual 45º Flat Angle Guide (MK Diamond Part No. 134557-MK) should be used.
DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for which it was
designed.
NOTE: If Cutting the tile in two equal halves, align the tile in the V-notch of the Movable Cutting Table
Ruler/Stop.
(A)
Remove the Adjustable Cutting
Guide
(B)
Place the Dual 45º Flat Angle
Guide on the Ruler/Stop
(C)
Position the Dual 45º Flat
Angle Guide and tighten the
retaining thumbscrew
(D)
Position the tile against the
Dual 45º Flat Angle Guide and
the Ruler/Stop
(G)
Perform the cut
Ruler/Stop
Turn counter-
clockwise to loosen Align Guide
to Ruler/Stop
Turn Clockwise
to tighten
45º Flat
Angle Guide
Ruler/Stop
Hold Work
in Position
Direction
of Cut
Turn counter-
clockwise to loosen Adjustable
Cutting Guide
Ruler/Stop
(E)
Turn the motor ON
Cooling Flow
Points
ON/OFF
Switch
On
Position
(H)
Turn the motor OFF when work
is complete
Off
Position
ON/OFF
Switch
(F)
Verify cooling flow on both sides
of the blade (See Maintenance
Section to adjust flow)