MK Diamond MK-770 User Manual
MK-770 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-770 Revision 06/05, Effective Date June 17, 2005 Page 2
INTRODUCTION
We at MK Diamond want to congratulate you on selecting the MK-770 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-770 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-770 safely and correctly. Please take a few minutes to familiarize yourself with the MK-770 by reading
and reviewing this manual.
If you should have questions concerning your MK-770, please feel free to call our friendly customer service
department at: 800 421-5830
Regards,
MK Diamond
MK-770 Revision 06/05, Effective Date June 17, 2005 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
24
MAINTENANCE AND TROUBLESHOOTING
Maintenance
26
Troubleshooting
31
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. 153618
Revision No. 08/04
MK-770 Revision 06/05, Effective Date June 17, 2005 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-770 Revision 06/05, Effective Date June 17, 2005
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-770 Revision 06/05, Effective Date June 17, 2005
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-770 Revision 06/05, Effective Date June 17, 2005
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.
Outlet Box
(A)
(B)
(C)
(D)
ADAPTER
Grounding
Means
Grounding
Pin
Grounding
Pin
FIGURE 1
MK-770 Revision 06/05, Effective Date June 17, 2005
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
14
12
Not Recommended
TABLE 1
Supporting
Surface
Power
Tool
Drip Loop
Power
Cord
FIGURE 2
MK-770 Revision 06/05, Effective Date June 17, 2005
Page 9
SAFETY
SAFETY LABEL LOCATIONS:
Safety labels are located according to Figures 1 through 4 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.
Motor – Right Side
Caution – Receptacle is for Water Pump Only
154822
1B.
Motor – Right Side
Motor Specifications
N/A
2
Motor – Left Side
Caution – Use with Ground Fault Circuit Interrupter
155678
3A
Cutting Head – Top
Warning – Read Owners Manual
155806
3B.
Cutting Head – Top
MK-770 Serial Number
156546
4A
Pump – Left Side
Warning – Connect to Grounded Receptacle
N/A
4B
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.
B 1 A 2 3 A B 4 A
B
MK-770 Revision 06/05, Effective Date June 17, 2005
Page 10
SAFETY
PRODUCT SPECIFICATIONS:
The MK-770 is a versatile Tile Saw. Operated and used according to this manual, the MK-770 will provide
years of dependable service.
General Description:
The MK-770 Tile Saw is engineered as a tabletop or stand mounted wet tile saw. The saw includes a powerful
115v electric motor. The saw is capable of cutting tile up to fourteen (14) inches in length, or diagonal cutting
tile up to ten (10) inches. The saw can cut an object one and one-half (2) inches thick in one pass.
Motor Specifications:
Motor specifications for the MK-770 are listed in Table 2 below.
Voltage
115 v
Overall Amperage
7.4 A
Frequency
60 Hz
RPM
6000 rpm
Horse Power
1-1/4 hp
Weight
46 lbs
Table 2
Blade Capacity:
The MK-770 uses a 7 (7) inch (178mm) diameter, wet cutting continuous rim, MK Diamond blade with a fiveeighths (5/8) inch (15.875 mm) arbor.
Tile Types:
The MK-770 can cut a variety of tile types including Porcelain, Terracotta, Marble, Quarry and Slate, Ceramic
or almost any other non-ferrous material.
NOTE:
The MK-770 is not designed to cut plastic or ferrous (metals) material.
MK-770 Revision 06/05, Effective Date June 17, 2005 Page 11
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
UNPACKING:
Your MK-770 has been shipped from the factory thoroughly inspected. Only minimal assembly is required.
Use proper lifting techniques when lifting the MK-770.
If not done, remove the MK-770, accessory box from the carton.
CONTENTS:
In your container, you will find one (1) MK-770 frame and water pan, one (1) MK-770 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)
Table Clip, one (1) inner flange wrench, (1) splash guard, one (1) owners manual, one (1) pump manual and
one (1) warranty card.
MK-770 Frame
and Water Pan
MK-770
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 Wrench and
Table Clip
Shaft
Wrench
Splash
Guard
Owners
Manual
Pump
Manual
Warranty
Card
MK-770 Revision 06/05, Effective Date June 17, 2005
Page 12
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
TRANSPORT:
1. The MK-770 weighs approximately forty-six (46) pounds; use care when transporting.
2. Never transport the MK-770 with water in the Water Pan.
The MK-770 is designed with a rigid frame and removable Cutting Head making the saw easily transportable.
Always use proper lifting techniques when lifting the MK-770. Never transport the MK-770 with water in the
Water Pan.
To lift the saw, grasp the front and back of the frame at the lift points shown blelow.
UNIVERSAL STAND:
The MK-770 weighs forty-six (46) 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-770 Revision 06/05, Effective Date June 17, 2005
Page 13
UNPACKING, TRANSPORT, UNIVERSAL STAND and ASSEMBLY
ASSEMBLY:
Follow the assembly instructions to prepare your MK-770 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 Post
Pivot Hole
Pivot Shaft
Post
(A)
Loosen and remove the Blade
Guard, Retaining Knob
(C)
Open the Blade Guard
Rotate clockwise
to open
(B)
Loosen the Blade Guard,
Retaining Wing nut
Blade
Guard
(A)
Place the Flat Washer onto the
Height Adjusting Knob
Flat Washer
Height
Adjusting Knob
(D)
Install the Height Adjusting Knob
through the Post into the Cutting
Head and tighten the Knob
Completely
Installed
Turn counter-
clockwise to
loosen
Blade Guard
Retaining Knob
Turn Clockwise
to tighten
Turn counter-
clockwise to
loosen
Blade Guard
Retaining Wingnut
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