MK Diamond Products SRX-150 User manual

11.2016
SRX-150
EARLY ENTRY CONCRETE SAW
OWNER’S MANUAL,
OPERATING INSTRUCTIONS
& PARTS LIST
www.mkdiamond.com
Caution: Read all safety and operating instructions
before using this equipment. This owner’s manual
MUST accompany the equipment at all times.
Revision 101
Manual Part# 172023-OM
Part # 172023-H

2
INTRODUCTION
Congratulations on your purchase of a the SRX-150 Early Entry Concrete 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 SRX-150 Early Entry Concrete 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 SRX-150 Early Entry Concrete Saw safely
and correctly. Please take the time to familiarize yourself with the SRX-150 Early Entry Con-
crete Saw by reading and reviewing this manual.
Read and follow all safety, operating and maintenance instructions.
If you should have questions concerning your SRX-150 Early Entry Concrete 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.

3
TABLE OF CONTENTS
SAFETY
Safety Messages 4
Damage Prevention Message 4
General Safety Precautions and Hazard Symbols 5-7
California Proposition 65 Message 8
Prestart Safety 9
Safety Label Locations 10
Product Specications 11
UNPACKING, TRANSPORT and ASSEMBLY
Unpacking 12
Contents 12
Transport 13
Assembly 14-16
STARTUP, OPERATION and SHUTDOWN
Startup 17-18
Operation 19-32
Shutdown 23
Cleanup 23
MAINTENANCE AND TROUBLESHOOTING
Maintenance 24-28
Troubleshooting 29
EXPLODED VIEW & PARTS LISTS 32-40
ORDERING and RETURN INSTRUCTIONS
Accessories 41
Ordering Information 42
Return Material Policy 42
Packaging Instructions 42
Authorized Service Centers 43
Warranty 43

4
EARLY ENTRY CONCRETE SAW SAFETY
Safety precautions should be followed at all times when operating this equipment. Failure to read and
understand the Safety Precaution and Operating Instructions could result in injury to yourself and
others.
This Operation Manual has been developed to provide complete instructions for the safe and efcient
operation of the Early Entry Concrete Saw.
Descriptions, illustrations, and photos are as accurate as possible at the time of publication. Photos
may include optional equipment or accessories and may not show all models covered by this manual.
SAFETY MESSAGE / ALERT SYMBOLS
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.
CAUTION
You CAN be INJURED if you do not follow directions. It may also be used
to alert against unsafe practices.
NOTICE
You can cause PROPERTY DAMAGE to your machine if you don’t follow directions.
Each message tells you what the hazard is, what can happen, and what you can do to avoid or
reduce injury. Other important messages are preceded by the word NOTICE.
The safety labels should be periodically inspected and cleaned by the user to maintain good legibility
at a safe viewing distance. If the label is worn, damaged or illegible, it should be replaced. Contact
MK Diamond or your dealer for replacement.
Before using this saw, ensure that the person operating the equipment has read and understands all
instructions in this manual.
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.

5
EARLY ENTRY CONCRETE SAW SAFETY
EXPLOSIVE FUEL!
Gasoline is extremely ammable, its vapors can explode if ignited; store only in approved
containers, in well-ventilated, unoccupied buildings and away from sparks or ames. Do not
ll the fuel tank while the engine is running or hot. Spilled fuel could ignite if it contacts hot
parts or sparks from ignition. Do not start the engine near spilled fuel. Never use gasoline
as a cleaning agent. Never operate the machine in an explosive atmosphere.
In order to prevent injury, keep guards in place and in working order at all times.
KEEP GUARDS IN PLACE
SAFETY PRECAUTIONS
GENERAL SAFETY PRECAUTIONS AND HAZARD SYMBOLS
(
(
)
)
ENGINE OVER-SPEED
Never tamper with the governor components or settings to increase the maximum speed of
the machine. Severe personal injury and/or equipment damage could result if the equip-
ment is operated speeds above design maximum.
LETHAL EXHAUST GASES
Engine exhaust gasses contain poisonous carbon monoxide, an odorless colorless gas
that can cause death if inhaled. Avoid inhaling exhaust fumes, and never run the engine
in a closed building or conned area.
In order to prevent injury, the following safety precautions and symbols should be followed
at all times!
GENERAL SAFETY
DO NOT operate or service this equipment before reading this entire manual.
This equipment should not be operated by persons under 18 years of age.
NEVER operate this equipment when not feeling well due to fatigue, illness or taking
medicine.
NEVER operate this equipment under the inuence of drugs or alcohol.
Whenever necessary, replace nameplate, operation and safety decals when they become
difcult to read.
ALWAYS store equipment properly when it is not being used. Equipment should be stored
in a clean, dry location out of the reach of children.

6
KEEP CHILDREN AWAY
All visitors and children should be kept a safe distance from work area.
MAKE WORKSHOP KID PROOF
Make the workshops kid proof by using padlocks, master switches or by removing starter keys.
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 operate equipment in dangerous environments. Always keep the work area well lighted.
ALWAYS USE SAFETY GLASSES
Safety glasses should always be worn when working around power tools. Everyday eye-
glasses only have impact resistant lenses and may not prevent eye injury; they are NOT
safety glasses.
ALWAYS USE RESPIRATORY PROTECTION
Exhaust gases may be harmful if inhaled. Do not operate gas-powered equipment in
enclosed spaces. Respiratory protection should be worn when operating gas powered
equipment.
ALWAYS USE HEARING PROTECTION
To reduce the possibility of hearing loss, always use hearing protection when operating
equipment.
ROTATING OR MOVING PARTS
Keep hands, feet, hair, and clothing away from all moving parts to prevent injury. Never
operate a power tool with shrouds or guards removed.
HOT PARTS
Engine components can become extremely hot from operation. To prevent severe burns, do
not touch these areas while the engine is running, or immediately after it is turned off. Never
operate the engine with heat shields removed.
on
ACCIDENTAL STARTS
Before starting the engine, be sure the ON/OFF switch is in the “OFF” position to prevent
accidental starting. Place the ON/OFF switch in the OFF position before performing any
service operation.
EARLY ENTRY CONCRETE SAW SAFETY

7
DO NOT OVERREACH
Keep proper footing and balance at all times by not overreaching.
MAINTAIN TOOLS WITH CARE
Keep tools sharp and clean for the best and safest performance. Always follow maintenance instruc-
tions for lubricating and when changing accessories.
SHUTDOWN TOOL
The saw should always be shutdown before servicing or when changing accessories such as blades,
bits, cutters, etc...
USE RECOMMENDED ACCESSORIES
Consult the owner’s manual for recommended accessories. Using improper accessories may in-
crease 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.
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.
WEAR PROPER APPAREL
Do not wear loose clothing, gloves, neckties, rings, bracelets, or other jewelry that may be caught in
moving parts. Nonslip footwear is recommended. Wear protective hair covering to contain long hair.
SECURE WORK
Clamps or a vise should be used to hold work whenever practical. Keeping your hands free to oper-
ate a power tool is safer.
NEVER LEAVE 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 nished.
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 func-
tion. Always check moving parts for proper alignment or binding. Check for broken parts, 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 al-
ways be installed such that rotation is in the direction of the arrow imprinted on the side of the blade
or cutter.
EARLY ENTRY CONCRETE SAW SAFETY

8
CALIFORNIA PROPOSITION 65 MESSAGE
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/dsg/topics/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.
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 ad-
dition, 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.
SILICA DUST WARNING
EARLY ENTRY CONCRETE SAW SAFETY

9
• 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 modications will void all warranties. Manufacturer does not
assume responsibility for any accident due to equipment modications.
• NEVER use accessories or attachments, which are not recommended by MK Diamond for
this equipment. Damage to the equipment and/or injury to user may result.
WARNING
DO NOT use woodcutting, or carbide blades on this machine! Use ONLY Diamond blades on machine.
Before starting the machine, ALWAYS check that all guards are in position and correctly tted. Check
the machine for loose bolts before starting.
Keep area around the machine clear of obstructions which could cause persons to fall onto moving parts.
ALWAYS ensure that the machine is on level ground before using. Know how to stop the machine
quickly in case of emergency. NEVER try to stop a moving blade with your hands.
EARLY ENTRY CONCRETE SAW SAFETY

10
OPERATION & SAFETY DECALS
Part # 164202
A
B C
E
H
FG
I
D
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 # 155587 (2)
CAUTION
DO NOT
operate without
guards in place.
!
Part # 154398
DO NOT operate
this equipment
before reading the
owner’s manual.
WARNING
!
Part # 155038
SERVICE OR
WARRANTY
FOR INFORMATION ON
PLEASE CALL
1-800-474-5594
Part # 170480
Part # 155582
CAUTION
DO NOT
touch hot
surface.
!
Part # 155578
Part # 155580 Part # 155581
WARNING
When refueling
stop engine and
allow to cool.
DO NOT
overll tank.
!
DANGER
The exhaust from this product con-
tains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
!
DANGER
Lethal exhaust
gases. Use only
in well ventilated
areas. DO NOT
use indoors.
J
Part # 155579
CAUTION
Accidental start hazard.
Disconnect spark plug prior
to servicing.
!
Location Description
AGas Tank/Side Proposition 65, Dust Warning
BHandle Read Manual
CBlade/Belt Guard Guards in Place
DGas Tank/Side Lethal Exhaust
EHandle Service/Warranty
FGas Tank /Side Refueling
GGas Tank/Side Exhaust/Cancer
HGas Tank/Side Hot Surface
I Handle QR Code for Manual
JBelt Guard Accidental Start
B
I
C
C
J
H
A
DG
F
The SRX-150 Early Entry Concrete Saw is equipped with a number of safety decals. These decals
are provided for operator safety and maintenance information. Should any of these operation or
safety decals become unreadable, replacements can be obtained by calling [phone].
EARLY ENTRY CONCRETE SAW SAFETY
E

11
Blade
The SRX-150 uses an 6-3/8 inch diameter diamond blade.
Concrete Saw Usage
The SRX-150 is designed to cut control joints in green concrete within one to two hours of
concrete nishing.
PRODUCT SPECIFICATIONS
SRX-150 Dimensions
EARLY ENTRY CONCRETE SAW PRODUCT SPECIFCATIONS
19.30
37.60
45.92
The SRX-150 is a versatile gas powered Early Entry Concrete Saw. Operated and used according to
this manual, the SRX-150 will provide years of dependable service.
General Description
The SRX-150 is engineered as a portable concrete saw powered by a Honda gas engine. The saw is
capable of 1-1/8” depth of cut with an 6-3/8” blade.
MotorandWeightSpecications
Motor and Weight specications for the SRX-150 are listed below.
Engine Honda GX160 Cyclone
Blade Capacity 6-3/8” (162mm)
Depth of Cut 1-1/8" (29mm)
Arbor Triangular
LxWxH (in) 32” x 19” x 42”
LxWxH (mm) 813 x 483 x 1067
Weight 88 lbs. (39.9 kg)
Part# 172023-H

12
UNPACKING
Early Entry
Concrete Saw
Skid Plate Engine Manual Warranty Card
Early Entry Concrete
Saw Owner’s Manual
EARLY ENTRY CONCRETE SAW UNPACKING
11.2016
SRX-150
EARLY ENTRY CONCRETE SAW
OWNER’S MANUAL,
OPERATING INSTRUCTIONS
& PARTS LIST
www.mkdiamond.com
Caution: Read all safety and operating instructions
before using this equipment. This owner’s manual
MUST accompany the equipment at all times.
Revision 101
Manual Part# 172023-OM
Part # 172023-H
Your saw has been shipped from the factory thoroughly inspected. Only minimal assembly and
service is required. Check each item, making certain all items are accounted for and in good visual
condition before discarding any packing materials. If there are any missing or damaged parts call
MK Diamond Customer Service at 800-421-5830.
CONTENTS
In the containers, you will nd one (1) Early Entry Concrete Saw, one (1) Skid Plate, one (1) Early
Entry Concrete Saw Owner’s Manual, one (1) Engine Owners Manual and one (1) Warranty Card.
WARNING Never start engine until all initial servicing and set up steps are completed accord-
ing to this operations manual and engine manual. Read and familiarize yourself
with all controls and features of the saw before beginning operations.

13
TRANSPORT
EARLY ENTRY CONCRETE SAW TRANSPORT
CAUTION 1. The Early Entry Concrete Saw weighs approximately eighty-eigth (88
pounds), use care when transporting.
2. Two people are required to lift and transport the Early Entry Concrete Saw.
1. Raise lock release lever.
2. ON/OFF switch.
3. Throttle control.
1
3
2

14
EARLY ENTRY CONCRETE SAW ASSEMBLY
Filling Oil Reservoir
Handlebar Assembly
(A)
Verify the Oil Drain Cap is
installed onto the Oil Drain Line
and is tight. Refer to Engine
Manual for details.
(A)
Locate the holes on both sides
of the handlebar.
(B)
Align the handlebar with the
holes on both sides of the
frame and put in the pin.
(C)
Install the pin until it is secure.
The engine is shipped with no oil in the crankcase. Refer to the engine manual for details
on the type and amount of oil required.
To ll the crankcase with oil, place the engine level. In order for this to be accomplished
the blade must not be installed, and the depth adjustment must be down (until the engine
is level).
NOTE:

15
EARLY ENTRY CONCRETE SAW ASSEMBLY
1. When installing the blade retaining-bolt, ensure the threads of the bolt are
aligned with the threads of the drive shaft so as not to “cross-thread” the bolt.
2. When installing the blade ensure that the blade shaft and anges are free from dirt
and all foreign material before mounting blade on the blade shaft. Tightening a blade
against an uneven surface can cause fracture or cause the blade to run out of alignment.
3. Blade shaft threads are left-handed.
(A)
Loosen the Blade Guard Nut.
Remove the Blade Guard
Cover.
NOTE:
Diamond Blade Installation
(B)
Loosen the Blade Shaft Nut while
holding the Shaft Wrench steady.
(F)
Replace the Blade Guard and
tighten Blade Guard Nut.
(C)
Remove the Blade Nut and
Outer Flange.
(D)
Install the Diamond Blade onto
the Blade Shaft. Ensure direc-
tional arrow on the blade indi-
cates proper rotational direction.
(E)
Install the Outer Flange and Blade
Shaft Nut. Tighten Blade Shaft Nut
holding the Blade Shaft steady.
WARNING
NOTICE
Do not operate the saw without the proper Blade Guard covering. Ensure
that the blade exposure does not exceed 180 degrees during operation.
The blade turns counterclockwise when facing the blade shaft. Ensure
directional arrow on the blade indicates proper rotational direction. Incor-
rect rotation will reduce blade life.

16
Skid Plate Installation
(A)
Hook front of Skid Plate over pin
on front plunger.
(B)
Insert pin through Skid Plate
and rear plunger.
EARLY ENTRY CONCRETE SAW ASSEMBLY
(F)
Replace the Blade Guard and
tighten Blade Guard Nut.

17
Filling Fuel Tank
EARLY ENTRY CONCRETE SAW START UP
WARNING 1. Gasoline is highly ammable and explosive. You can be burned or seriously
injured when handling fuel.
2. To fuel, stop engine if running, and allow it to cool.
3. Refuel in a well-ventilated area.
4. Keep gasoline away from appliance pilot lights, barbeques, electric appliances,
power tools, etc.
5. Wipe up spills immediately. Do not start engine until spill is dry.
1. Fuel can damage paint and plastic. Be careful not to spill fuel when lling the
fuel tank. Damage caused by spilled fuel IS NOT covered under the warranty.
2. DO NOT use stale or contaminated gasoline, or an oil/gasoline mixture.
NOTE:
(A)
Remove the Fuel Cap. Refer to
Engine Manual for details.
(B)
Ensure fuel level is 1” below the
throat of the Fuel Tank.
1 inch (25mm)
from throat
The pre-start inspection should be performed before beginning any job. If Diamond Blade is worn,
replace the blade before starting work.
Pre-Start Inspection
(A)
Inspect Blade for damage or
cracks. Verify the Blade is a dry
cutting blade and correct for the
material being cut.
(C)
Inspect the saw for general
damage and/or loose hardware.
(B)
Inspect Engine for leaks.
Maximum
Fuel Level
(C)
Ensure fuel level is below the
top of the strainer lter.
Maximum
Fuel Level

18
(D)
Check for proper oil level.
Refer to Engine Manual for
details.
Low Level
Proper Oil Level
(G)
Check the Air Filter for
cleanliness. Refer to Engine
Manual for details.
1. Carbon monoxide gas is toxic, breathing it can cause unconsciousness
and/or death.
2. Avoid any areas or actions that expose you to carbon monoxide.
Engine Start
WARNING
EARLY ENTRY CONCRETE SAW START UP
(E)
Ensure fuel level is 1” below the
throat of the Fuel Tank.
1 inch (25mm)
from throat
Maximum
Fuel Level
(F)
Ensure fuel level is below the
top of the strainer lter.
Maximum
Fuel Level

19
EARLY ENTRY CONCRETE SAW OPERATION
Adjusting Depth of Cut
Dust Collection Systems
The common depth of cut for control joint cutting is 1”. The SRX-150 is factory set to a depth of 1”.
The SRX-150 has a 2” port for connection with a dust collection system. The vacuum system re-
quired must have a CFM of 129 and a HEPA lter guaranteed 99.99% efcient at .3 micron. We
carry the Ermator line of dust collections systems and recommend the Ermator S13 HEPA Dust
Extractor or Ermator S26 HEPA Dust Extractor. Visit mkdiamond.com for more information.
(A)
Raise the Raise/Release Lever.
(B)
Adjust the Truck Stop screw to
increase or decrease the depth
of cut.
As the blade wears adjustments may be required.
NOTICE

20
EARLY ENTRY CONCRETE SAW OPERATION
Standard Operation
The Early Entry Concrete Saw is intended for industrial applications and operated by experienced
professionals. The operator must be aware of the machine’s capabilities and limitations. 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...
(A)
Use the Raise Lock/Release
Lever to raise the blade clear of
the oor.
(B)
Attach the dust collection
system to the vacuum port.
(C)
Start the Saw using the Engine Start
procedure in the engine manual.
Prior to operation of this machine the operator must determine the existence
and location of any subsurface features that may be hazardous or could
damage the equipment, (i.e. electric cable, natural gas line etc...)
CAUTION
1. Ensure the blade you are using is clearly marked for dry cutting.
2. Check the condition of the air lter at least every four hours of operation.
Refer to Engine Manual for details.
NOTE:
(E)
When the cut is complete, raise
the blade completely out of the
cut by pushing down on the
handlebars until the Raise Lock
engages.
(D)
Align the pointer and blade with
the cut line and slowly lower the
blade by squeezing the Raise
Lock Release Lever. Cut with
engine at full throttle.