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www.mkdiamond.com
MK-377 TILE SAW
OWNER'S MANUAL
OPERATING INSTRUCTIONS
& PARTS LIST
Revision 102
Manual Part# 160030
Caution: Read all safety and operating instructions
before using this equipment. This parts list MUST
accompany the equipment at all times.
06.2014
Page 2
INTRODUCTION
Congratulations on your purchase of a MK-377 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-377 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-377 Saw safely and correctly. Please take the time to familiarize
yourself with the MK-377 Saw by reading and reviewing this manual.
Read and follow all safety, operating and maintenance instructions.
If you should have questions concerning your MK-377 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
Safety Messages 4
Damage Prevention Message 4
General Safety Precautions 5
Hazard Symbols 6
California Proposition 65 Message 7
Electrical Requirements and Grounding Instructions 8-11
Safety Label Locations 12
Product Specications 13
UNPACKING, TRANSPORT
Unpacking 14
Contents 14
Transport 14
STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
Cutting Head Installation 15
Diamond Blade Installation 15-16
Adjustable Cutting Guide Installation 17
Splash Guard Installation 17
Pre-Start Inspection 17
Water Pump Preparation 17-18
Setup for Operation 19
Adjustment & Operation 20
Cleanup 21-22
Lockout 22
MAINTENANCE AND TROUBLESHOOTING
Maintenance 22-23
Blade Dressing 23
Motor Brush Change Out 24
Troubleshooting 25-27
EXPLODED VIEW AND PARTS LIST
Exploded View & Parts List 28-30
ACCESSORIES ORDERING and RETURN INSTRUCTIONS
Accessories 32
Ordering Information 34
Return Material Policy 34
Packaging Instructions 34
Authorized Service Centers 34
Contact & Warranty 35
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MK-377 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!
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.
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 PLACES
DO NOT use power tools in damp or wet locations nor expose them to rain. Always keep
the work area well lighted.
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MK-377 SAW SAFETY
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.
USE THE PROPER EXTENSION CORD
If using an extension cord make sure it is in good condition rst. 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. Page 9 shows the correct AWG size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gauge. The smaller the gauge number,
the heavier the cord.
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.
PERSONAL PROTECTIVE EQUIPMENT
ALWAYS wear approved respiratory, head, ear and eye protection
when operating this machine.
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.
ON / OFF
ALWAYS place the power ON/OFF switch in the OFF position when the saw is not in use.
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MK-377 SAW SAFETY
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.
CHECK FOR DAMAGED PARTS
Before using a power tool, check for damaged part. A guard or any other part that is damaged should be carefully checked to determine if 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 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 nished.
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 operate this equipment when not feeling well due to fatigue, illness or taking medicine.
Check the chemical properties of the material to be cut/grinded and follow all EPA/OSHA
Regulations.
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MK-377 SAW SAFETY
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WARNING
Diamond Blades improperly used are dangerous. Comply with American National Standards Insti-
tute 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
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.
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.
OVER SPEED
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.
DO NOT EXPOSE TO RAIN
DO NOT expose to rain or use in damp locations.
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MK-377 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 and §1503.1).
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 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-377 SAW SAFETY
Surface
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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-377 SAW SAFETY
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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-377 SAW SAFETY
WARNING
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.
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.
Drip Loop Information
WARNING
To reduce the risk of electrocution, keep all connections dry and off the ground. DO NOT
touch the plug with wet hands.
WARNING
Use of under sized 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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Tile Saws
MK-377 SAW SAFETY LABELS
SAFETY LABEL LOCATIONS
Safety 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.
CAUTION
!
Receptacle is for
water pump only.
125V, .6 amps max.
Label A
CAUTION
!
This saw is to be used
with a Ground Fault
Circuit Interrupter.
Label B
FORINFORMATIONON
SERVICE OR
WARRANTY
PLEASE CALL
1-800-474-5594
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.
!
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.
!
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’
50’
75’
100’
150’
250’
Max. Cord Length
Max. Cord Length
Max. Cord Length
No. 12 Wire
No. 10 Wire
No. 8 Wire
!
WARNING
Label E
Label D
A
B
E
C
D
Label F
F
Tile Master Label Sheet Part#166012
Decal/Label Location Description
A Motor - Back Caution - Receptacle is for Water Pump Only
B Motor - Side Caution - Use with GFCI only
C
M
otor - Top
Service/ Warranty
D Motor Post Warning - Silica Warning
E Cutting Head – Top Warning - Read Owners Manual
F Table Notice - Voltage/extension cords
TILE SAW SPECIFIC WARNINGS
WARNING
Wear eye protection.
Use splash guard for every operation for which it can be used.
Disconnect saw before servicing, when changing cutting blades, and cleaning.
Replace damaged cutting blade before operating.
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MK-377 SAW PRODUCT SPECIFICATIONS
PRODUCT SPECIFICATIONS
The MK-377 is a versatile Tile Saw. Operated and used according to this manual, the MK-377 will
provide years of dependable service.
General Description
The MK-377 Tile Saw is engineered as a tabletop 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-377 are listed in the table below.
Voltage 120v
Motor Amperage 5
Frequency 50/60Hz
RPM 5500 rpm
Horse Power 1/2 hp
Blade Capacity
The MK-377 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-377 can cut a variety of tile types including stone, ceramic, slate, granite, marble, porcelain,
and lapidary products.
NOTE:
The MK-377 is not designed to cut plastic or metals.
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MK-377 SAW UNPACKING
UNPACKING
CAUTION
Use proper lifting techniques when lifting the MK-377
Remove the MK-377 and accessory box from the carton.
CONTENTS
One (1) MK-377 cutting surface & water pan
One (1) MK-377 cutting head
One (1) 7-inch wet cutting blade
One (1) splash guard
One (1) blade nut wrench
One (1) extended rip guide
One (1) electric water pump
MK-377
Cutting Surface
MK-377
Cutting Head
Diamond Blade
One (1) cooling transfer tube
One (1) flow adjusting clamp
One (1) shaft wrench
One (1) owners manual
One (1) pump manual
One (1) warranty card
Splash Guard
Blade Nut
Wrench
Rip Guide Electric
Water Pump
www.mkdiamond.com
OPERATING INSTRUCTIONS
Revision 100
05.2010
Manual Part# 160030
Caution: Read all safety and operating instructions
before using this equipment. This parts list MUST
accompany the equipment at all times.
Owners
Manual
OWNERS MANUAL
PARTS LIST &
Cooling
Transfer Tube
Name
address
MK-377
City
state zip Code
phoNe Fax
e-mail
produCt model
part NumBer
maChiNe serial#
where did you purChase this saw From ? N a me
q tile distriButor q home CeNter q equipmeNt supply house
q tool supply q Bldg material supply q reNtal equipmeNt house
are you a do-it-yourselFer
what Criteria was importaNt iN ChoosiNg this saw? (rate From 1 to 5, 5 BeiNg the most importaNt)
priCe
CommeNts or suggestioNs:
mK diamoNd warraNty
If within one (1) Year from the date of purchase, this MK Diamond saw fails due to defect in material or workmanship, MK will repair it, free of charge when the unit is returned to the dealer where it was purchased. This warranty DOES NOT cover normal wear or damage resulting from operator abuse. In no event shall MK Diamond Products,
Inc. be liable for consequential damages arising out of the failure of any product if operated improperly. MK Diamond Products may act as a warranty station for motor/engine repairs based on an individual agreement with the manufacturer. This warranty is in lieu of all other warranties express or implied.
©2010 All Rights reserved. MK Diamond Products, Inc. • P/N 155037 MK Warranty Card (02/10)
Pump
Manual
Flow
Adjusting Clamp
MK DiaMonD Warranty CarD
q or CoNtraCtor q IF so, what type? tile q masoNry q other
power preCisioN portaBility availaBility other
1315 Storm Parkway, Torrance, CA 90509 USA | www.mkdiamond.com | 1.800.421.5830 | 1.310.539.5158
date purChased
Warranty
Card
Shaft
Wrench
TRANSPORT
CAUTION
1. The MK-377 weighs approximately thirty (30) pounds; use care when transporting.
2. Never transport the MK-377 with water in the Water Pan.
The MK-377 is designed with a rigid frame and removable Cutting Head making the saw easily
transportable. To lift the saw, grasp the front and back of the frame at the lift points shown below.
Cutting
Lift Point
Head
Lift Point
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MK-377 SAW INSTALLATION
Follow the assembly instructions to prepare your MK-377 for operation.
CUTTING HEAD INSTALLATION
(A)
Loosen the Blade Guard
Retaining Knob
(D)
Align the Cutting Head Retaining
Holes to the holes on the Post
DIAMOND BLADE INSTALLATION
NOTE:
When installing the Retaining Screw, do not "cross-thread" and DO NOT over tighten the screw.
(B)
Remove the Blade Guard
Wingnut and then remove
the Blade Guard
(E)
Install the three Cutting Head
Retaining Screws using a
Phillips Screwdriver
(C)
Locate and remove the three
Cutting Head Retaining
Screws using a Phillips
Screwdriver
(F)
Install the Blade Guard
and tighten Wingnut and
Retaining Knob
(A)
Loosen the Blade Guard
Retaining Wingnut
(B)
Loosen the Blade Guard
Retaining Knob and open
the Blade Guard
15
(C)
Place the Shaft Wrench on the Motor
Shaft (NOTE: the Outer and Inner
Flanges and the Blade Nut are removed
in the photo above) rotate blade shaft
so shaft wrench is engaged.
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MK-377 SAW INSTALLATION
(D)
Place the Blade Wrench on the
Blade Retaining Nut and remove
the Blade Retaining Nut and
Outer Flange
(G)
Install the Outer Flange and
Retaining Nut; install the Shaft
Wrench and Blade Wrench as
shown in Steps C and D and
tighten the Retaining Nut
(E)
Install Diamond Blade onto
Blade Shaft
(H)
Close the Blade Guard and
tighten the Blade Guard
Retaining Knob
(F)
Verify the Directional Arrow of
the Blade faces outward and
matches the Directional Arrow of
the Blade Guard
(I)
Tighten the Blade Guard
Retaining Wingnut
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MK-377 SAW ASSEMBLY
ADJUSTABLE CUTTING GUIDE INSTALLATION
NOTE: The Adjustable Cutting Guide can be used on either side of the Diamond Blade.
(A)
Loosen Adjustable Cutting Guide
retaining thumbscrew and place it over
the Movable Cutting Table and Ruler/
Stop
SPLASH GUARD INSTALLATION
(A)
Remove Thumbscrew and washer
from back of Blade Guard
(B)
Place the Adjustable Cutting Guide
onto the Movable Cutting and tighten
the retaining thumbscrew
(B)
Install the Thumbscrew
through the Washer and Splashguard
then align to the hole found on back of
the Blade Guard and tighten
PRE-START INSPECTION
Prior to beginning work, a pre-start inspection of the saw should be performed.
(A)
Ensure the ON/OFF Switch
is in the OFF position
Inspect the Pump Assembly for
damage - ensure the cord is free
of cracks or cuts
(B)
Inspect the Diamond Blade for
damage – verify the blade is
correct for the type of material
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(C)
being cut
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MK-377 SAW ASSEMBLY
(D)
Inspect the MK-377 for
damage – ensure the cord is
free of cracks or cuts
WATER PUMP PREPARATION
(A)
Press the end of the Cooling
Transfer Tube onto the Water
Pump
(E)
Verify the Movable Cutting
Table moves freely
(B)
Connect the Cooling Transfer
Tube to the inlet connection of
the Blade Guard
(C)
Place the Water Pump in the
Water Pan with the suction down
and insert the Pump Cord to the
clip in the back. Ensure pump is
against back of water pan.
(D)
Fill the Water Pan with clean
water covering Pump suction
(this should be done periodically
during cutting)
(E)
Connect the Water Pump power
cord to the connection found on
the back of the motor
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MK-377 SAW OPERATION
SETUP FOR OPERATION
NOTE:
CAUTION
1. Before connecting the MK-377 to a power supply, be sure the voltage, cycle
and phase meet the requirements of table below.
2. If using an extension cord, make sure the length and wire gauge
correspond to the requirements listed in the table on page 10. An extension
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.
3. Before connecting the MK-377 to a power supply, be sure the voltage,
cycle and phase of the job site power source meet the requirements in the
table below.
4. Use an approved Ground Fault Circuit Interrupter (GFCI).
5. Do not cover the motor vents as this could lead to motor overheating.
VOLTAGE 120v
CYCLE 60Hz
PHASE 1-phase
In order to avoid breaker tripping, a 20 amp circuit breaker should be used.
(A)
Plug MK-377 into the GFCI (A
GFCI should always be used
when operating the MK-377)
(C)
Plug the GFCI into the
power source
19
Page 20
MK-377 SAW OPERATION
ADJUSTMENT & OPERATION
CAUTION
DO NOT FORCE THE TOOL. It will do the job better and safer at the rate for
which it was designed.
(A)
Loosen the retaining thumbscrew
and place the Adjustable Cutting
Guide to the desired cut length
and tighten thumbscrew
(B)
Place the tile against the
Ruler/Stop and Cutting Guide
(C)
Turn the motor ON and verify proper
cooling flow on both sides of the
blade (See Maintenance Section to
increase/decrease flow)
(D)
Perform the cut. Turn the motor
OFF when work is complete
20
Page 21
MK-377 SAW MAINTENANCE
CLEANUP
NOTE:
Dispose of wastewater in accordance with applicable Federal, State and Local laws.
(A)
Ensure the ON/OFF Switch is
in the OFF position. Remove
the Cutting Assembly from the
Water Pan
CAUTION
(D)
Fill the Water Pan with
clean water
Ensure the saw is disconnected before completing the remainder of the
cleanup process.
(B)
Dispose of the contents of
the Water Pan and clean
the pan. Replace the
Cutting Assembly.
(E)
Run the MK-377 until clear
water is seen at the blade
cooling ports (Approx. 1
minute)
(C)
Clean the Water Pump of all
debris. (Refer to water pump
manual for more detail)
(F)
Dispose of the contents of
the Water Pan and clean the
MK-377 with soap and clear
water
CAUTION
(G)
Clean the Guide Bar
To extend the life of the MK377, lubricate the Motor Shaft with light oils such
as, 3 in 1, WD-40, etc.
(H)
Clean the Roller Wheel
Guide Rail
21
(I)
Clean the Roller Wheels
Page 22
MK-377 SAW MAINTENANCE
CAUTION
To extend the life of th MK-377, the following procedure should be performed after
each use. Lubricate all points listed below with light oils such as, 3 in 1, WD-40, etc.
(J)
Lubricate the Guide Bar
Lubricate the Roller teel
(K)
Assembly
LOCKOUT
The MK-377 is equipped with a lockout device that can be used during maintenance and troubleshooting
to render the saw in operable. The lockout can also be used to prevent unauthorized use.
(A)
Locate the Lockout Pin in the
center of the ON/OFF Switch
toggle (the Lockout Pin has
"Remove To Lock" highlighted)
Lockout the Saw by removing
the Lockout Pin
(B)
MAINTENANCE
Monthly Maintenance
The following maintenance should be performed monthly.
(A)
Remove and clean the Inner and
Outer Flanges and the Blade
Retaining Nut
Clean the Motor Shaft
(B)
22
(C)
Lubricate the Motor Shaft
Page 23
MK-377 SAW MAINTENANCE
(D)
Verify the Movable Cutting Table
Roller Wheel Assembly is tight
Verify the Roller Wheels are
(E)
tight
(F)
Verify the Cutting Head Assembly
Retaining Screws are tight
BLADE DRESSING
Like most cutting instruments, a diamond blade performs best when it is dressed. Over time and
use, diamonds on the outer edge of the blade will become smoothed or "glazed" over. This will
reduce grinding efficiency and may cause the blade to "wander" or bend giving the illusion of an
alignment problem. When this occurs, the blade will need to be dressed. The diamond blade can be
dressed using the MK Dressing Stick (part# 152972) and by following the steps below.
(A)
Setup the MK-377 for operation
(See Setup, Adjustment and
Operation)
Set the Adjustable Cutting
Guide to cut a 1/16-strip
(B)
(C)
Position the Dressing Stick
against the Adjustable Cutting
Guide and the Ruler/Stop
(D)
Turn the motor ON. Verify proper
cooling flow on both sides of the
blade
(E)
Push the Dressing Stick into
the Blade in a smooth even
motion to perform a cut, repeat
7 or 8 times to dress the Blade
23
Page 24
MK-377 SAW MAINTENANCE
MOTOR BRUSH CHANGE-OUT
WARNING
Locate and loosen one Motor
Brush Housing Cover using a flat
head screwdriver
Disconnect the tool before servicing and when changing accessories, such as
blades and bits.
(A)
(B)
Remove the Motor Brush
Housing Cover
(C)
Remove the old Motor Brush
(D)
Clean the Motor Brush Housing
using a Q-tip
(G)
Install the second Motor Brush
(Repeat Steps C to F)
(E)
Align and install the new Motor
Brush
(F)
Install Motor Brush Cap and
tighten using a flat head
screwdriver
24
Page 25
MK-377 SAW TROUBLESHOOTING
TROUBLESHOOTING
Blade will not cut properly.
(A)
Check for Smoothness or
"Glazing" (Dress blade if needed)
(D)
Verify the blade is correct for the
material being used
COOLING FLOW
(B)
Check for proper rotation
(C)
Ensure the Blade Core is not
bent and Arbor is not out of round
(A)
Check that the Cooling Flow
Adjusting Valve is FULL open
(B)
Remove the Cooling Transfer
Tube from the Blade Guard
inlet and clean
25
(C)
Check the cooling flow Adjusting
Clamp is open
Page 26
MK-377 SAW TROUBLESHOOTING
NOTE:
"Rodding" cooling channels is performed by inserting a small wire rod through the cooling
inlet on top of the Blade Guard and directing the rod out through each of the cooling
flow tubes located on the underside of the Blade Guard. The cooling channels should be
"rodded" until all ports are free of foreign debris.
(D)
Remove the Blade Guard Intake
Fitting
(E)
Clean the Blade Guard Intake
Fitting
(F)
Locate the Blade Guard Cooling
Channels
(G)
Rod Cooling Channels and
recheck flow
MOVABLE CUTTING TABLE DOES NOT MOVE CORRECTLY
(A)
Check the Guide Bar and Roller
Wheel Guide Frame is clean -
clean if dirty
Check the Movable Cutting
Table Roller Wheels for wear
replace if necessary
(B)
26
Page 27
MK-377 SAW TROUBLESHOOTING
BLADE STOPS TURNING
(A)
Check the ON/OFF Switch is in
the ON position
(D)
Verify the circuit breaker is at least
20 amps - if not, move to 20-amp
circuit
(B)
Verify all plugs are fully
connected
(B)
Verify circuit breaker not
tripped; if it is tripped, reset it
once only
(C)
Check to see if the Ground Fault
Circuit Interrupter (GFCI) tripped
(C)
Check power source voltage
is 120v - if not 120v, move to
another circuit
27
Page 28
MK-377 SAW EXPLODED VIEW
28
Page 29
MK-377 SAW PARTS LIST
Item Description Qty Part #
A Accessories
A1 Wrench, Blade Nut, 15/16 Boxed End 1 134684
A2 Wrench, Blade Shaft, 11/16 Open End 1 153450
A3 Blade, 7 Dia X 5/8 arbor MK-170 1 153441
A4* Owner’s Manual, 377 1 160030
A5* Warranty Card 1 155037
A7
Assembly, Rip Guide
w/ Screw, 1⁄4 –20 x 3⁄4 Thumb
- N/A
1
1
134551
150991
Assembly, Blade Guard, 7”
B
B1 Guard, 7” Blade 1 154811
B2
Elbow, 1/8 MNPT X 1/4 BARB 90ϒ Brass
B3 Knob, Davies 1 151681
B4 Washer, 5/16 SAE Flat 2 151754
B5 Wing nut, 5/16-18 Nylock 1 151746
D1 Frame 1 155792
D2 Pan, Water 1 155791
D3 Cord Clip, 1/4 Push Mount 1 157259
E
Assembly, 5/8 Guide Bar
E1 Bar, Guide, 5/8 Dia 1 151739
E2 Screw, 5/16-18 X 1 Hex Head Cap 2 151743
E3 Washer, 5/16 Split Lock 2 151747
E4 Washer, 5/16 SAE Flat 2 151754
F
Assembly, Linear Bearing, 5/8 Dia
F1
Bearing, Linear, 5/8 Dia
F1A Bearing, Multi-lube
F2 Screw, 5/16-18 X 1 Hex Head Cap 2 151743
F3 Washer, 5/16 Split Lock 2 151747
F4 Washer, 5/16 SAE Flat 2 151754
1 154811-MK
1 154652
1 151739-MK
- N/A
1
2
157126
151781
Assembly, Motor Mount
G
G1 Motor Mount 1 157403
G2 Washer, 5/16 Split Lock 1 151747
G3 Screw, 5/16-18 X 2 1/2 Hex Head Cap, Full Thread 1 151748
G4 Screw, 1/4-20 X 1/2 Flat Head Phillips Cap 3 155812
G5
Tag, Serial Number, No Mark
H1 Motor, 120v/4.7a, 1 157226-G
H2 Label, Caution, GFCI, 1 X 2 1/8 1 155678
H3 Label, Caution, Receptacle, 1 X 2 1/8 1 154822
H4 Screw, M5-.8 X 20mm Flat Head Phillips Machine 5 157404
H5 Nut, M5-.8 Hex 5 157405
H6 Flange, Blade 2 135830
H7 Nut, 5/8-18 UNF 1 135848
H8 Label, 377 Model 1 160031
H9 Label, Warning, Read Owner’s Manual 1 155806
1 155811-MK
1 157249-01
29
Page 30
MK-377 SAW PARTS LIST
K Assembly, Roller Wheel, Double
K1 Bracket, Roller Wheel 1 156522
K2 Wheel, Roller 2 151799
K3 Screw, 1/4-20 X 1 1/2 Hex Head Cap 2 151914
K4 Washer, 1/4 SAE Flat 2 151915
K5 Nut, 1/4-20 Hex 2 151893
L
Assembly, Splash Curtain
L1 Curtain, Splash 1 134841
L2 Bracket, Splash Curtain 1 155901
L3 Washer, 1/4 SAE Flat 1 151915
L4 Wing screw, 1/4-20 X 1/2 1 151888
M1 Table, Composite, 370/470 1 156536
M2 Screw, 5/16-18 X 1 Hex Head Cap 2 151743
M3 Washer, 5/16 Split Lock 2 151747
M4 Washer, 5/16 SAE Flat 2 151754
Assembly, PES-100 120v Water Pump
N
N1 Pump, Water, PES-100 120v 1 155987
N2 Hose, Vinyl, 1/4 ID 2’ 132951
N3 Clamp, Flow, 1/4-1/2 1 154394
1 156586
1 155901-MK
1 155987-MK
30
Page 31
NOTES
31
Page 32
MK-377 SAW ACCESSORIES
ITEM
1.
2.
3.
4.
NUMBER
139295
139311
153293
134577-MK
DESCRIPTION
MK-200, 7" x 5/8 Arbor
Premium grade Diamond Blade for
smooth, chip-free cutting on tile.
MK-215, 7" x 5/8 Arbor
Supreme grade diamond blade for hard
materials
MK-315, 7" x 5/8 Arbor
Supreme super hi-rim diamond blade
Dual 45° Flat Angle Guide
5.
5.
134569-MK
6.
7.
8.
152792
152610
160131
Rip Guide 134551-MK
90° Protractor
Dressing
Stone
Ground Fault Circuit Interrupter
Stand for 7" Tile Saw
32
Page 33
NOTES
33
Page 34
MK-377 SAW ORDERING & RETURN
ORDERING INFORMATION
You may order MK Diamond products through your local MK Diamond distributor or, you may order
direct from MK Diamond.
When ordering direct from MK Diamond, please have the following information ready before calling:
• The Model Number of the saw
• The Serial Number of the saw
• Where the saw was purchased and when
• The Part Number for the part(s) being ordered
• The Part Description for the part(s) being ordered
NOTE: There is a $25.00 minimum order when ordering direct from MK Diamond. A $6.00 charge will
be added to orders having a net billing value under $50.00. All purchases must be made using VISA,
MasterCard or American Express.
All parts may be ordered by calling toll free to – 800 421-5830 or 310 539-5221 and asking for
Customer Service. For technical questions, call – 800 474-5594.
RETURN MATERIALS POLICY
To expedite the service relative to the return of a product purchased through MK Diamond, please
observe the following:
NOTE: When returning all items, they must have been purchased within the previous twelve (12)
months.
• Have the Model Number of the saw
• Have the Serial Number of the saw
• Have the location of where the saw was purchased
• Have the date when the saw was purchased
• Contact Customer Service for approval to return the item(s)
• Obtain a Returned Goods Number (RGA) authorizing the return
• Follow the packaging instructions in the following section
• Ensure your item(s) are prepaid to the destination
For returned items, call toll free to – 800 421-5830 or 310 539-5221 and ask for Customer Service.
For technical questions, call – 800 474-5594 or 310 257-2845.
PACKAGING INSTRUCTIONS
• Remove the Cutting Head and Support Angle Assembly
• Dry the saw before shipping
• When packing, include the following: Saw, Diamond Blade, Blade Guard and Support Angle
Assembly and Adjustable Cutting Guide (Other Accessories are not required)
• Package the unit in its original container or one of comparable size (do not ship the unit partially
exposed)
• Ensure all parts are secured in the packaging to prevent moving
AUTHORIzED SERVICE CENTERS
For quicker repair time, you may contact MK Diamond Customer Service, toll free, at 800 421-5830
or 310 539-5221 for the Authorized Service Center closest too you or visit our web site at
www.mkdiamond.com. For technical questions, call – 800 474-5594.
34
Page 35
MK-377 SAW CONTACT & WARRANTY
CONTACT:
Please contact MK Diamond Products, Inc. Customer Service Department with any questions you
might have regarding distributors, parts or service.
Telephone: (800) 421-5830
Fax: (310) 539-5158
E-mail: [email protected]
Customer Service Hours: Monday through Friday, 6AM-4PM PST
MK Diamond Products, Inc.
1315 Storm Parkway
Torrance, CA 90501
MK DIAMOND PRODUCTS, INC. LIMITED WARRANTY
MK DIAMOND PRODUCTS, INC. will guarantee every machine they build, to be free from defects in
material and workmanship for (1) one year from date of purchase. The obligation of MK DIAMOND
PRODUCTS, INC. under this warranty is limited to the repair or replacement of any parts which,
under normal use, prove to be defective in material or workmanship. The parts involved or the unit
in question should be returned to MK DIAMOND PRODUCTS, INC. or to a point designated by us,
transportation prepaid.
This warranty does not obligate us to bear the cost of labor or transportation charges in connection
with replacement or repair of defective parts. Likewise, it shall NOT apply to any unit which has been
subjected to misuse, neglect or accident. This warranty does NOT apply to any machine which has
been repaired or altered outside our factory.
This warranty does NOT obligate MK DIAMOND PRODUCTS, INC., with respect to items not of our
manufacture, such as engines, motors, hydraulics, etc., which are subject to their own guarantees and
warranties.
We shall in no event be liable for consequential damages or contingent liabilities arising out of failure
of any equipment or parts to operate properly.
© COPYRIGHT 2014, MK DIAMOND PRODUCTS, INC. ALL RIGHTS RESERVED.
The MK Diamond logo is a registered trademark of MK Diamond Products, Inc. and may not be used,
reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission.
MK Diamond may have patents, patent applications, trade marks, copyrights of other intellectual
property right covering this product in this document.
This manual MUST accompany the equipment at all times. This manual is considered a permanent
part of the equipment and should remain with the unit if resold.
The information and specications included in this publication were in effect at the time of approval for
printing.
35
Page 36
MK-377 TILE SAW
OWNER'S MANUAL & OPERATING INSTRUCTIONS
MK Diamond Products, Inc.
1315 Storm Parkway
Torrance, CA 90501
Toll-Free: (800) 421-5830
Phone: (310) 539-2221
Fax: (310) 539-5158
www.mkdiamond.com
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