MK Diamond Products MK-1280 User manual

www.mkdiamond.com
Caution: Read all safety and operating instructions
before using this equipment. This owners manual
MUST accompany the equipment at all times.
MK-1280 ELECTRIC SAW
BRICK/PAVER SAW
OWNERS MANUAL &
PARTS LIST
Electric Baldor Part # 167492
03.2017
Revision 103
Manual Part No. 168786

2
We at MK Diamond want to congratulate you on selecting the MK-1280 Electric Saw. We are certain
that you will be pleased with your purchase. MK Diamond takes pride in producing the nest prod-
ucts in the industry.
Operated correctly, your MK-1280 Electric Saw 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-1280 Electric Saw safely and correctly. Please take a few minutes
to familiarize yourself with the MK-1280 Electric Saw by reading and reviewing this manual.
If you should have questions concerning your MK-1280 Electric Saw, please feel free to call our
friendly customer service department at: 800 421-5830
Regards,
MK Diamond
MK-1280 ELECTRIC SAW INTRODUCTION
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.

3
SAFETY Page
Safety Message/Alert Symbols, Warnings 4-5
Hazard Symbols 5
General, Maintenance, Saw Safety 6-7
California Proposition 65 Message 7
Electrical Requirements and Ground Instructions 8-10
Product Specications 11
Safety Labels 12
Safety Labels & Location 13
PRODUCT SPECIFICATIONS
Unpacking 14
Contents 14
Transport 15
SETUP, ADJUSTMENT AND OPERATION
Assembly 16
Diamond Blade Installation 17
Pre-start Inspection 17
Cutting 18-19
MAINTENANCE
Cleanup 20
Maintenance 21-23
Troubleshooting 24-25
OPTIONAL CART
Assy, Cart 25
Assy, Handle and Lock 26
Assy. Setting Brake 27
EXPLODED VIEW AND PARTS LIST
Figure 1 - Paver Saw - P/N 166561 30-31
Figure 2 - Paver Saw - P/N 166561 32-33
Figure 3 - Assy, Table P/N 166577 34
Figure 4 - Assy, Arbor P/N 166579 35
Figure 5 - Assy, 16” Blade Guard 166581 36
Figure 6 - Assy, Cart 167437 37
ORDERING AND RETURNING INSTRUCTIONS
Ordering Information 39
Return Material Policy 39
Packaging Instructions 39
Authorized Service Centers 39
Contact & Limited Warranty 40
MK-1280 ELECTRIC SAW TABLE OF CONTENT

4
MK-1280 ELECTRIC SAW 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
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.
DAMAGE PREVENTION AND INFORMATION MESSAGES:
NOTE: Equipment and/or property damage may result if these instructions are not followed.
In order to prevent injury, the following safety precautions and symbols should be followed at all times!
GENERAL SAFETY PRECAUTIONS AND HAZARD SYMBOLS
SAFETY PRECAUTIONS
Form a habit of checking to see that keys and adjusting wrenches are removed from
the power tool before it is turned on.
Cluttered work areas and benches invite accidents.
DO NOT use power tools in damp or wet locations nor expose them to rain. Always
keep the work area well lighted.
All visitors and children should be kept a safe distance from work area.
A safety message alerts you to potential hazards that could hurt you or others. Each safety message is preced-
ed 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.
CAUTION You CAN be INJURED if you do not follow directions. It may also be used to alert
against unsafe practices.
ALWAYS read this Owner’s Manual before operating the machine.
ALWAYS keep the Blade Guards in place.
REMOVE ADJUSTING KEYS AND WRENCHES
KEEP WORK AREA CLEAN
KEEP CHILDREN AWAY
DO NOT USE IN DANGEROUS PLACES

5
MK-1280 ELECTRIC SAW SAFETY
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 10 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.
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.
Keep proper footing and balance at all times by not overreaching.
Clamps or a vise should be used to hold work whenever practical. Keeping your
hands free to operate a power tool is safer.
Keep tools clean for the best and safest performance. Always follow maintenance
instructions for lubricating, and when changing accessories.
Power tools should always be disconnected before servicing or when changing
accessories, such as blades, bits, cutters, and the like.
Make the workshops kid proof by using padlocks, master switches or by removing starter
keys.
A power tool will do a job better and safer operating at the rate for which it was designed.
DO NOT force a tool or an attachment, to do a job that it was not designed to do.
MAKE THE WORKSHOP KID PROOF
DO NOT FORCE THE TOOL
USE THE RIGHT TOOL
USE THE PROPER EXTENSION CORD
USE PROPER APPAREL
ALWAYS wear approved eye protection.
ALWAYS wear approved respiratory protection.
ALWAYS place the power ON/OFF switch in the OFF position when the saw is not in use.
ON / OFF
SECURE WORK
DO NOT OVERREACH
MAINTAIN TOOLS WITH CARE
DISCONNECT TOOLS

6
MK-1280 ELECTRIC SAW SAFETY
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
HAZARD SYMBOLS
NEVER touch electrical wires or components while the engine is running. They can be
sources of electrical shock which could cause severe injury or burns.
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury.
Never operate the motor with covers, shrouds, or guards removed.
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.
((
)
)
on
DO NOT expose to rain or use in damp locations.
WARNING
WARNING
ROTATING PARTS
ELECTRICAL SHOCK
OVER SPEED
DO NOT EXPOSE TO RAIN
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

7
MK-1280 ELECTRIC SAW SAFETY
Consult the owner’s manual for recommended accessories. Using improper accessories
may increase the risk of personal or by-stander injury.
Serious injury could occur if a power tool is tipped, or if a cutting tool is unintentionally
contacted.
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.
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.
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.
CALIFORNIA PROPOSITION 65 MESSAGE
USE RECOMMENDED ACCESSORIES
NEVER LEAVE A TOOL UNATTENDED
NEVER STAND ON THE TOOL
CHECK FOR DAMAGED PARTS
DIRECTION OF FEED
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities con-
tain 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
•Arsenic and chromium, from chemically treated lumber
For further information, consult the following sources:
http://www.osha.gov/SLTC/silicacrystalline/index.html
http://www.cdc.gov/niosh/consilic.html
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 those dust masks that are specially designed to lter out microscopic particles.

8
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 cur-
rent to reduce the risk of electric shock. This tool is equipped with an electric cord having an equip-
ment-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.
WARNING
• Do not modify the plug provided – if it will not t the outlet; have the proper outlet installed by a
qualied 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 qualied 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
WARNING
This tool is intended for use on a circuit that has an outlet that looks like the one shown in Sketch A.
The tool has a grounding plug that looks like the plug illustrated in Sketch A. A temporary adapter,
which looks like the adapter illustrated in sketches B and C, may be used to connect this plug to a
2-pole receptacle as shown in Sketch B, if a properly grounded outlet is not available. The temporary
adapter should be used only until a properly grounded outlet can be installed by a qualied electri-
cian. 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.
Grounding
Means
(A)
Metal Screw
Cover of
Grounded
Outlet Box
(D)
ADAPTER
(C) Grounding
Pin
Grounding
Pin (B)
Circuit and Adapter Information

9
Supporting
Surface
Power
Tool
Drip Loop
Power
Cord
Drip Loop Information
To avoid the possibility of the appliance plug or receptacle getting wet, position the machine to one
side of a wall mounted receptacle. This will prevent water from dripping onto 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.
The “drip loop” is that part of the cord below the level of the receptacle, or the connector, if an exten-
sion 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
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 disconnecting the product from the extension
cord.
WARNING

10
MK-1280 ELECTRIC SAW SAFETY
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.
To reduce the risk of electrocution, keep all connections dry and off the ground. Do
not touch the plug with wet hands.
WARNING
WARNING
EXTENSION CORD MINIMUM GAGE FOR LENGTH
VOLTS TOTAL LENGTH OF CORD IN FEET
25 ft. AWG 50 ft. AWG 100 ft. AWG 150 ft. AWG
115v 14 12 8 6

11
The MK-1280 Electric Saw is designed for use with a 16-inch diameter segmented wet or dry MK Dia-
mond blade with a .110 to .375 inch cutting width.
The MK-1280 Electric Saw can cut a variety of masonry types including, cinder block, slump stone
block, wall brick, paver brick, concrete block and cylinders, roong tile, marble, granite, decorative
rock or almost any other non-ferrous material.
NOTE: The MK-1280 Electric Saw is not designed to cut plastic or metals.
Engine power ratings are calculated by the individual engine manufacturer and the rating method may
vary among engine manufacturers. Users are advised to consult the engine manufacturer’s owners
manual and website for specic information regarding engine power rating and maintenance.
PRODUCT SPECIFICATIONS
Operated and used according to this manual, the MK-1280 Electric Saw will provide years of
dependable service.
The MK-1280 Electric Saw is engineered as portable brick saw powered by a Baldor 2 Hp motor. The
saw is capable of cutting masonry up to ve (5.75) inches (127 mm) in height, and twenty-eight (28)
inches (711 mm) in length in a single pass.
Motor specications for the MK-1280 Electric Saw are listed below.
Motor/Engine Baldor
Power 2 Hp 120V/230V
Blade Capacity 16” (406mm)
Depth of Cut 5.75” (146mm)
Length of Cut 13.5” (2” Thick Brick)
L x W x H (inches)
L x W x H (mm)
48.5” x 20.5” x 28”
1,232 x 521 x 711
Weight 185 lbs (84 kg)
Part # 167492
GENERAL DESCRIPTION
SPECIFICATIONS
BLADE CAPACITY
MASONRY TYPES
MK-1280 ELECTRIC SAW PRODUCT SPECIFICATIONS
MOTOR SPECIFICATIONS

12
MK-1280 ELECTRIC SAW SAFETY
The MK-1280 Saw is equipped with a number of safety decals provided for operator safety and main-
tenance information. Should any of these decals become unreadable, replacements can be obtained
by calling [phone].
OPERATION & SAFETY DECALS
Part # 164202
A
H
G
CB
DE
F
I
WARNING
•Thisequipmentmayproducedustormistscontaining
 crystallinesilica.
•Silicaisabasiccomponentofmasonry,concrete,and
 othermaterials.
•Repeatedand/orsubstantialinhalationcancause
 seriousorfatalrespiratorydiseasesincludingsilicosis.
•RespirablecrystallinesilicaislistedbyCaliforniaand
 otherauthoritiesasasubstanceknowntocausecancer.
•Employdustcontrolsandprotectionper
 OSHA/NIOSH/MSHA.
!
Part # 154822
Receptacle is for water
pump only.
125V .6 amps max.
!CAUTION
Part # 155678
!CAUTION
This saw is to be used
with a Ground Fault
Circuit Interrupter.
Part # 155038
SERVICE OR
WARRANTY
FOR INFORMATION ON
PLEASE CALL
1-800-474-5594
Part # 155672
NOTICE
Most motor problems are caused by
low voltage from improper extension
cords. See owner’s manual for
extension cord selection.
!
Part # 170480
Scan for manuals
Part # 155588
WARNING
In the event of blade
failure, replace
blade guard
immediately.
!
Part # 154398
DO NOT operate
this equipment
before reading the
owner’s manual.
WARNING
!
Part # 155587 (2)
CAUTION
DO NOT
operate without
guards in place.
!

13
MK-1280 ELECTRIC SAW SAFETY
SAFETY DECAL LOCATIONS
Decal Location Description
A Motor - Front Warning - Silica
B Frame Service or Warranty Information
C Belt Guard/Blade Guard Caution - Guards in Place
D Motor -Front Warning - Read Manual
E Blade Guard Warning - Replace Blade Guard
F Motor - Front Notice - Extension Cords
G Motor - Top Caution - Ground Fault Circuit
H Motor - Side Caution - Water Pump
I Motor - Top QR Code - Manuals
Fig. 4 MK-1280 Safety Decal Locations
F
I
AC
E
D
H
G
B
C

14
MK-1280 ELECTRIC SAW UNPACKING
Name
address
City
state zip Code
phoNe Fax
e-mail
produCt model
part NumBer
maChiNe serial#
MK DiaMonD Warranty CarD
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
q or CoNtraCtor q IF so, what type? tile q masoNry q other
what Criteria was importaNt iN ChoosiNg this saw? (rate From 1 to 5, 5 BeiNg the most importaNt)
power preCisioN portaBility availaBility other
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 re-
turned 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/en-
gine 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)
mK diamoNd warraNty
1315 Storm Parkway, Torrance, CA 90509 USA | www.mkdiamond.com | 1.800.421.5830 | 1.310.539.5158
where did you purChase this saw Fro m ? N a me
CommeNts or suggestioNs:
priCe
date purChased
www.mkdiamond.com
Caution: Read all safety and operating instructions
before using this equipment. This owners manual
MUST accompany the equipment at all times.
MK-1280 ELECTRIC SERIES
BRICK/PAVER SAW
OWNERS MANUAL &
PART LIST
09.2010
Revision 100
ManualPart No.xxxxxxx
Your MK-1280 Electric Saw has been shipped from the factory thoroughly inspected. Only minimal
assembly is required.
CAUTION
UNPACKING
Movable
Cutting Table
MK-1280 Electric
Saw Adjustable Cutting Guide Blade Wrench
Baldor Motor
Manual
Owner’s Manual Warranty Card
In your container, you will nd one (1) MK-1280 Electric Saw, one (1) MK-1280 Electric Saw movable
cutting table, one (1) adjustable cutting guide, one (1) blade wrench, one (1) owners manual, one (1)
Motor Manual and one (1) warranty card.
CONTENTS
Use proper lifting techniques when lifting the MK-1280 Electric Saw.

15
MK-1280 ELECTRIC SAW TRANSPORT
The MK-1280 Electric Saw weighs approximately 185 pounds; two people should be used when trans-
porting the saw.
1. Never transport the MK-1280 Electric Saw with water in the Water Basin.
2. The MK-1280 Electric Saw weighs approximately 185 pounds; two people are
required when lifting or moving.
The MK-1280 Electric Saw is designed with handles on the front & rear of the saw for ease of
transport.
CAUTION
TRANSPORT
NOTE: Remove the Movable Cutting Table when transporting the MK-1280 Electric Saw.
Handle
Remove Movable
Cutting Table
• Verify the Movable Cutting Table is removed
• Grasp the saw by the handles in the front & rear of the saw
• Lift and transport the saw to the desired work location
To transport –
Handle

16
MK-1280 ELECTRIC SAW ASSEMBLY
MOVABLE CUTTING TABLE INSTALLATION
Fig. A
While holding the front, position
movable Cutting Table roller
wheels above Guide Rails
Fig. B
Seat movable Cutting Table
roller wheels on saw Guide Rails
Fig. C
Verify movable Cutting Table
is seated correctly by moving
table back and forth
ADJUSTABLE CUTTING GUIDE INSTALLATION
Fig. A
Loosen adjustable Cutting
Guide retaining thumbscrews
by turning counter-clockwise
Fig. B
Seat and tighten the adjustable
Cutting Guide retaining
thumbscrew
The adjustable Cutting Guide can be used on either side of the Diamond Blade.NOTE:

17
MK-1280 ELECTRIC SAW ASSEMBLY
DIAMOND BLADE INSTALLATION
Fig. A
Loosen Blade Guard Bolts
Fig. D
Install Retaining Screw and
Outer Flange
Fig. F
Install Blade Guard and
tighten bolts
Fig. B
Remove the Blade Guard.
Remove Retaining Screw, (left-
hand threads) and Outer Flange
Fig. E
Tighten retaining screw and
Outer Flange. Reverse process
to install
Fig. C
Install Diamond Blade onto
Blade Shaft
When installing the diamond blade retaining-bolt, ensure the threads of the bolt are aligned
with the threads of the blade shaft so as not to “cross-thread” the bolt.
NOTE:

18
MK-1280 ELECTRIC SAW INSPECTION
The pre-start inspection should be performed before beginning any job.
If the Diamond Blade shows signs of fatigue cracking, replace the blade before
starting work.
Fig. C
Verify Movable Cutting Table
moves freely and inspect
engine
Fig. B
Inspect Wooden Strip for
excessive grooves
Fig. A
Inspect Blade for damage –
Verify Blade correct for mate-
rial being cut
PRE-START INSPECTION
CAUTION
Fig. B
OpenCoolingowcontrol
valvetoadjustow
Fig. A
Attach Hose
WET CUTTING
Fig. D
Inspect MK-1280 Electric Saw
for general damage, loose con-
nections and hardware

19
MK-1280 ELECTRIC SAW STARTUP
Fig. A
Attach Vacuum Hose to
Vacuum Port
DRY CUTTING
Skip step C, if cutting dry.
CUTTING
NOTE:
DO NOT FORCE TOOL, it will do the job better and safer at the rate for which
it was designed.
CAUTION
Fig. A
Set the Adjustable Cutting
Guide
Fig. B
Position the masonry piece
Fig. E
Slowly push piece toward the
blade – continue until the
cut is complete
Fig. F
Turn motor OFF when work is
complete
Fig. D
Setup to Cut. Start
saw
Fig. C
Open the Cooling Flow Control
Valveandadjustow.Verifycooling
owexistsonbothsidesoftheblade

20
MK-1280 ELECTRIC SAW OPERATION
Fig. A
Clean Movable Cutting Table
Guide Rails with soap and
clean water
Engine parts are extremely hot following use, allow engine to cool 1/2-hour
before cleaning. Use care during cleanup to avoid injury.
CLEANUP
CAUTION
Fig. B
Clean Movable Cutting table
Roller Wheels
Fig. C
Clean exterior surface (except
engine) with soap and clean
water
Perform the following after initial purchase and operation of the MK-1280 Electric Saw.
INITIAL MAINTENANCE
Fig. A
Check and adjust V-belt tension
followingrst48hoursofopera-
tion. See Micro V-belt Inspection
The following should be performed monthly. Items should be lubricated as directed.
MONTHLY MAINTENANCE
Fig. A
Remove and clean Diamond
Blade Outer Flange and Retain-
ing Bolt
Fig. B
Check Movable Cutting Table
Roller Wheels for wear