MK Diamond CX-3 Manual
MK Diamond CX-3 is a quality concrete saw designed to provide years of service. It's equipped with a powerful Honda GX160 engine and a variety of safety features, including blade and belt guards. The CX-3 is ideal for cutting concrete, asphalt, and other hard materials. It's also portable and easy to use, making it a great choice for both professional contractors and DIYers. Some of the possible use cases for the MK Diamond CX-3 include:
- Cutting concrete slabs for driveways, patios, and walkways
- Cutting asphalt for road repairs and paving projects
- Cutting trenches for drainage and utility lines
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Revision 116 12.2021
Manual Part# 159345-OM
Caution: Read all safety and operating instructions before using this equipment. This owner’s manual
MUST accompany the equipment at all times.
CX-3 ®
Gas Saw
OWNER’S MANUAL
MODELS
CX-3 ® Honda GX160
PART #
159345
INTRODUCTION
Congratulations on your purchase of a CX-3 ® Concrete Saw. We are certain that you will be pleased with your purchase. MK Diamond takes pride in producing the finest construction power tools and diamond blades in the industry.
Operated correctly, your CX-3 ® 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 CX-3 ® Concrete Saw safely and correctly. Please take the time to familiarize yourself with the CX-3 ® Concrete Saw by reading and reviewing this manual.
Read and follow all safety, operating and maintenance instructions.
If you should have questions concerning your CX-3 ® 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:
WARRANTY: For your (1) one year warranty to be effective, complete the online Product
Registration as soon as possible. Visit www.mkdiamond.com/registration/
2
TABLE OF CONTENTS
SAFETY
Safety Messages
Damage Prevention Message
General Safety Precautions and Hazard Symbols
California Proposition 65 Message
Prestart Safety
Safety Label Locations
Product Specifications
UNPACKING, TRANSPORT and ASSEMBLY
Unpacking
Contents
Transport
Assembly
STARTUP, OPERATION and SHUTDOWN
Startup
Operation
Shutdown
Cleanup
MAINTENANCE AND TROUBLESHOOTING
Maintenance
THEORY
Theory Of Diamond Blades
ACCESSORIES ORDERING and RETURN INSTRUCTIONS
Accessories
Ordering Information
Return Material Policy
Packaging Instructions
Authorized Service Centers
Warranty
9
10
11
4
4
5
8
12
12
13
14-15
16-17
18
19
20
21-30
31
32
33
33
33
33
34
3
ON
( (
)
)
ON
( (
)
)
CX-3
®
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 warnings and guidelines do not by themselves eliminate danger. They are not substitutes for proper accident prevention procedures and good judgement.
SAFETY MESSAGES
ON
)
)
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.
ON
ON
)
)
DANGER You WILL 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.
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.
NEVER operate this equipment without proper protective clothing, shatterproof glasses, steel-toed boots and other protective devices required by the job. Non-slip foot wear is recommended.
) )
) )
( ( ( (
4
ON
( (
)
)
CX-3
®
SAFETY
ON
( (
ON
)
)
( (
)
)
ON
( (
ON
ON
)
)
( (
( (
PERSONAL PROTECTIVE EQUIPMENT
ALWAYS wear approved respiratory, head, ear and eye protection when operating this machine.
ON
ON
ON
ON
ON
)
)
)
)
Before starting the engine/motor, 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. ALWAYS place the power ON/OFF switch in the OFF position when the machine is not in use.
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.
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.
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.
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.
ALWAYS avoid inhalation of and skin contact with silica dust and/or mist. Provide proper dust removal. Use dust-collection system when applicable.
NEVER operate the machine in an explosive atmosphere or near combustible materials.
Sparks from the cutting-action of this machine can ignite flammable materials, liquids, gases
( ( or dust.
)
)
( (
This equipment should not be operated by persons under 18 years of age.
( (
KEEP CHILDREN AWAY
All visitors and children should be kept a safe distance from work area. Maintain a safe operating distance to other personnel.
( (
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.
DO NOT force a tool or an attachment to do a job that it was not designed to do.
5
CX-3
®
SAFETY
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
( (
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.
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.
DISCONNECT TOOLS
Power tools should always be disconnected before servicing, adjusting or when changing
( ( accessories, such as blades, bits, cutters, and the like.
MAINTAIN TOOLS WITH CARE
Keep tools clean and maintained for the best and safest performance. Always follow maintenance instructions and examine the machine before use. If any abnormal vibrations or noises occurs, turn off machine immediately and have the problem corrected before
( ( further use.
( (
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. Keep area around machine clear of obstructions which could cause persons to fall.
DO NOT USE IN DANGEROUS PLACES
DO NOT operate equipment in dangerous or hazardous environments. DO NOT use power tools in damp or wet locations nor expose them to rain. Always keep the work area well
( ( lighted.
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.
ON
( (
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.
6
CX-3
®
SAFETY
ON
( (
( (
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 if 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. Always check the machine for loose bolts before starting.
ON
ON
ON
ON
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 turn a power tool
- Do not leave a tool until it comes to a complete stop.
OFF when leaving the work area, or, when a cut is finished.
ALWAYS
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 use this machine with any cutter designed for woodworking.
ON
)
)
( (
NEVER operate this equipment when not feeling well due to fatigue, illness or taking medicine.
ON
ON
ON
ON
ON
( (
NEVER operate this equipment under the influence of drugs or alcohol.
On belt driven equipment, overtensioning of belts will result in premature crank and/or bearing failure.
( (
Whenever necessary, replace nameplate, operation and safety decals when they become difficult 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
( (
DO NOT lend or rent this equipment without including the Owner's Manual and the Engine/
Motor Manufacturer's Manual.
Check the chemical properties of the material to be cut/grinded and follow all EPA/OSHA
Regulations. (cut/ground)
7
CX-3
®
SAFETY
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/npptl/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 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/docs/96-112/ http://oehha.ca.gov/prop65/law/P65law72003.html http://www.dir.ca.gov/Title8/sub4.html
http://www.P65warnings.ca.gov
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 filter 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.
8
ON
( (
)
)
CX-3
®
PRE-START
GAS ENGINE SAFETY
Gasoline models are shipped from the factory dry, meaning without fuel or oil. Both must be added before equipment can be used. Check the engine Manufacturer Owner's Manual for instructions on fueling, break-in, servicing and proper engine care and use.
GAS SAFETY PRECAUTIONS
ON
ON
( (
( (
EXPLOSIVE FUEL!
Gasoline is extremely flammable, its vapors can explode if ignited; store only in approved containers, in well-ventilated, unoccupied buildings and away from sparks or flames. DO
NOT fill 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 overfill tank. DO NOT start the engine near spilled fuel. Never use gasoline as a cleaning agent.
Refer to engine manufacturer manual for specific operating procedures and safety warnings.
ALWAYS check the fuel lines and fuel tanks for leaks and cracks before starting the engine.
DO NOT run the machine if fuel leaks are present or the fuel lines are loose.
ON
( (
Accidental start hazard. Disconnect spark plug prior to servicing.
)
) LETHAL EXHAUST GASES!
Engine exhaust gasses contain poisonous carbon monoxide (an odorless, colorless gas).
Avoid inhaling exhaust fumes Breathing it can cause unconsciousness and even kill you.
Always operate gasoline engine machines in a well-ventilated area. DO NOT operate in areas where exhaust fumes could accumulate without wearing appropriate respiratory protection. Never run the engine in a closed building or confined area.
NOTE: 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.).
FUELING SAFETY
ON
)
)
ON
)
)
ON
)
)
ALWAYS close fuel value on engines when machine is not being operated.
Move the machine at least 10 feet (3 meters) from the fueling point before starting the engine, and make sure the gas cap is on the machine and the fuel can is properly tightened.
9
CX-3
®
SAFETY
OPERATION & SAFETY DECALS
The CX-3 ® 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 (800) 262-1575.
!
WARNING
• This Equipment may produce Dust or Mists containing Crystalline Silica.
• Employ Dust Controls and Protection per OSHA/NIOSH/MSHA.
Part # 164202
A
!
This equipment contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. These chemicals are contained in various components, fluids and paint, including but not limited to, fuel, oil, electric motors and batteries. In addition, gasoline/diesel powered equipment emits engine exhaust and fumes, and when serviced, cleaned or maintained generate used oil, waste fluids, fumes, grease, grime and particulates from component wear and silica dust which contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
Part #172641
B
!
CAUTION
DO NOT operate without guards in place.
Label #155587
Part # 155587
C
!
WARNING
DO NOT operate this equipment before reading the owner’s manuals.
Label #154398
Part # 154398
D
Scan for manuals Scan for safety information
Part # 170480
E
Decal/Label Location
A
B
C
D
E
Cross Bar
Console
Blade/Belt Guard/Shaft Cover
Console
Gas Tank/Top
Description
Warning - Dust Control
Warning - Silica Prop 65
Caution - Guards in Place
Warning - Read Owner’s Manual
QR Codes for Manuals and Safety
10
CX-3 ® PRODUCT SPECIFICATION
PRODUCT SPECIFICATIONS
The CX-3 ® is a versatile gas powered Concrete Saw. Operated and used according to this manual, the CX-3 ® will provide years of dependable service.
General Description
The CX-3 ® is engineered as a portable concrete saw powered by a Honda gas engine. The saw is capable of cutting up to five and half (5-1/2) inches in depth.
Motor and Weight Specifications
Motor and Weight specifications for the CX-3 ® are listed below.
Model
Engine
Power
Starter
Fuel Capacity
Blade Capacity
Blade RPM
Depth of Cut
Weight
Part #
CX-3 ® Honda
Honda (Gas)
GX160 Cyclone
Electric
.8 Gallon (3.1 Liter)
14”
3,600
5-1/2” (140 mm)
116 lbs. (53 kg)
159345
Blade
The CX-3 ®
uses a 12 to 14 inch diameter diamond blade.
Concrete Saw Usage
The CX-3 ®
is designed to cut various grades of concrete surfaces.
Features
• Compact, lightweight, engineered for maneuverability and reliability
• Can be used for wet or dry cutting
• Corrosion resistant cast-aluminum blade guard
• Built-in water distribution system supplies water to both sides of blade
• Sturdy single piece steel motor mount weldment to minimize vibration
• 1” diameter blade shaft with self aligning bearings
• Hinged blade guard provides easy access for blade changes and inspection
• Folding handle bar for compact transport
• Poly V-belt for positive power transmission
• Right-Hand cutting, cuts within 1” of wall or curb
11
CX-3
®
UNPACKING
UNPACKING
Your CX-3 ® has been shipped from the factory thoroughly inspected. Only minimal assembly is required.
Remove the CX-3 ® from the pallet and place it on a flat surface.
CONTENTS
In the containers, you will find one (1) CX-3 ® , two (2) Blade Shaft Wrenches, one (1) Handlebar, two
(2) Handlebar Tri-Knobs, two (2) Tri-Knob Washers, one (1) CX-3 ® Owner’s Manual, one (1) Engine
Owners Manual, one (1) Warranty Card, one (1) Handle, and one (1) Pointer.
CX-3 ® 2 Blade Shaft
Wrenches www.mkdiamond.com
CX-3 ® Gas Saw
OWNER’S MANUAL
MODELS
CX-3 ® Honda GX160
PART #
159345
Revision 115 01.2021
Manual Part# 159345-OM
CX-3 ®
Owner’s Manual
Engine Manual
Handlebar
Warranty
Card
Handlebar
Tri-Knob
Handle
Tri-Knob
Washer
Pointer
Crank Wheel
12
CX-3
®
TRANSPORT
TRANSPORT
CAUTION 1. The CX-3
® weighs approximately one hundred and sixteen (116 pounds),
2. Two people are required to lift and transport the CX-3 ® .
To lift the CX-3 ® , one person will lift by grasping the Handlebar and one person will lift by grasping the front of the CX-3 ® .
Follow the assembly instructions to prepare your CX-3 ® for operation.
Crank Wheel Assembly
(A)
Thread the crank wheel on to the depth control screw and tighten until snug.
(B)
The crank wheel has a 3/8 - 16 set screw installed.
Handlebar Assembly
(C)
Use a 3/16” allen wrench to tighten screw. Do not over tighten as this will cause damage to the crank wheel.
(A)
Locate the threaded holes on both sides of CX-3 ® frame.
console
(B)
Align the handlebar with the threaded holes on the sides of the CX-3 ® console frame.
(C)
Install one Tri-Knob Washer onto each Tri-Knob. Install Tri-Knobs through the Handlebar and into the threaded holes on the CX-3 ® console frame.
13
CX-3 ® ASSEMBLY
Diamond Blade Installation
NOTE:
When installing the diamond 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.
(A)
Locate Blade Guard lock.
(B)
Push Lock Button. Open the
Blade Guard cover.
(C)
Locate the Blade Retaining Bolt and the Outer Flange.
(D)
Loosen the Blade Retaining Bolt while holding the Shaft Wrench steady. Remove the Blade Retaining Screw and Outer Flange.
(E)
Install the Diamond Blade onto the Blade Shaft. Ensure arrow is pointed in direction of rotation.
(F)
Install the Outer Flange. Verify it is seated against the blade.
(G)
Install the Blade Retaining Bolt.
(H)
Tighten Blade Retaining
Bolt while holding the Blade
Shaft steady.
WARNING
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.
14
CX-3
®
ASSEMBLY
Filling Oil Reservoir
NOTE: The engine is shipped with no oil in the crankcase.
Refer to Engine Manual for details on type and amount of oil required.
(A)
Verify the Oil Drain Cap is installed onto the Oil Drain Line and is tight. Refer to Engine
Manual for details.
Crank Wheel Handle Installation
(A)
Insert Crank Wheel Handle mounting bolt up through hole in crank wheel.
Pointer Installation
(B)
Thread Crank Wheel Handle onto bolt.
(C)
Hold crank wheel handle and tighten bolt with Allen wrench.
(A)
Insert bolt on Pointer into mounting flange next to
Blade Guard and tighten.
15
CX-3
®
START UP
Filling Fuel Tank
NOTE:
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.
1. Fuel can damage paint and plastic. Be careful not to spill fuel when filling 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.
1 inch (25mm) from throat
Maximum
Fuel Level
Maximum
Fuel Level
(A)
Remove the Fuel Cap. Refer to
Engine Manual for details.
(B)
Ensure fuel level is 1” below the throat of the Fuel Tank.
(C)
Ensure fuel level is below the top of the strainer filter.
Pre-Start Inspection
The pre-start inspection should be performed before beginning any job. If Diamond Blade is worn, replace the blade before starting work.
(A)
Inspect Blade for damage for cracks Verify the Blade is correct for the material being cut.
(B)
Inspect Engine for leaks.
16
(C)
Inspect the CX-3 ® for general damage and/or loose hardware.
CX-3
®
STARTUP
Proper Oil Level 1 inch (25mm) from throat
Low Level
(D)
Check for proper oil level.
Refer to Engine Manual for details.
Maximum
Fuel Level
Maximum
Fuel Level
(E)
Ensure fuel level is 1” below the throat of the Fuel Tank.
(F)
Ensure fuel level is below the top of the strainer filter.
(G)
Check the Air Filter for cleanliness. Refer to Engine
Manual for details.
Engine Start
WARNING
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.
NOTE: 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 Depth Control Wheel to raise the Blade clear of the floor.
Refer to Engine Manual for starting procedure.
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.)
17
CX-3
®
OPERATION
Standard Operation
The following is a brief overview of operating the CX-3 ® .
(A)
Use the depth control wheel to raise the blade clear of the floor.
(B)
Attach the cooling supply hose to the Cooling Inlet.
(C)
Lower the Pointer. Align a straightedge with the blade and align pointer with edge.
(D)
Layout and mark the area to be cut using a chalk-line. Align
Pointer and Blade to chalk-line.
(E)
Start the CX-3 ® using the
Engine Start procedure in the Engine Manual.
(G)
Open Cooling Supply Valve.
Verify proper cooling flow and adjust the water flow on the
Blade to a desired amount.
(H)
Slowly lower the Blade until the desired level is reached and begin the cut. Cut with the engine at full throttle.
18
CX-3
®
SHUTDOWN
(J)
When the cut is complete, raise the
Blade. Close Cooling Supply Valve and shut down saw.
NOTE: Perform the cut using only enough pressure to follow the original marked line. The saw has a natural tendency to pull towards the side on which the blade is mounted. To assure straight line cutting, apply pressure to the appropriate handle. If excessive pressure is required back off the on the forward speed of the saw. Driving the saw too fast while cutting may cause the front wheels to lift causing the blade to cut at uneven depths. Do not attempt to steer the saw. Sudden and severe corrections can cause the blade to be damaged or broken.
Normal Engine Shutdown
(A)
Raise the Blade off the ground.
(B)
Move the Throttle Lever to idle speed.
(C)
Place Engine Master Switch in the OFF position. Place Fuel
Valve in the OFF position.
Refer to Engine Manual.
(D)
Raise the Pointer.
19
CX-3
®
CLEANUP
Emergency Engine Shutdown
(A)
Place Engine Master Switch in the OFF position.
Cleanup
CAUTION
NOTE:
Engine parts are extremely hot following use, allow engine to cool 1/2-hour before cleaning. Use care during cleanup to avoid injury.
1. To extend operating life, the Concrete Saw should be cleaned following every
use.
2. Using a garden hose or pressure washer is not advised as it can force water
into the air cleaner or muffler opening.
3. Use care when cleaning around electrical components.
(A)
Verify the engine is off and cool before beginning to clean. Clean the CX-3 ® with soap and water.
(B)
Clean around the Console.
(C)
Clean the Depth Control Screw.
(D)
Clean water system outlets, including water tubes in blade guard.
(E)
Clean the remainder of the exterior surface (except the engine).
20
CX-3
®
MAINTENANCE
MAINTENANCE SAFETY
• NEVER lubricate components or attempt service on a running machine.
• Keep the machinery in proper running condition.
• Fix damage to the machine immediately and always replace broken parts, or missing decals.
New Maintenance
Perform the following after initial purchase and operation of the saw.
(A)
Change engine oil after first month or first 20 operating hours (See Engine Manual).
(B)
Check and adjust tension on all belts following first
48 hours of operation
(See belt section).
Maintenance Following Use
The following maintenance should be performed following each use.
(A)
Shut down the Engine.
(B)
Check Air Filter
(See Engine Manual).
(C)
Lubricate the Grease Fitting.
(D)
Lubricate the pivot point of the
Pointer.
(E)
Lubricate the Cooling
Supply Valve.
21
(F)
Verify the tightness of all bolts and screws.
CX-3 ® MAINTENANCE
Weekly (50 hours) and Monthly (200 hours)
The following should be performed monthly. Items should be lubricated using waterproof grease.
(A)
Change engine oil every 100 hours. Refer to Engine Manual for details.
(B)
Lubricate the Depth Control
Screw (Monthly).
(C)
Lubricate the Blade Shaft Bearings (Monthly).
(D)
Clean engine Air Filter weekly and replace monthly. Refer to
Engine Manual for details.
(E)
Clean Spark Plug Weekly and readjust Spark Plug monthly.
Refer to Engine Manual for details.
(F)
Clean and lubricate the Blade
Shaft.
(G)
Clean and lubricate the Blade
Retaining Bolt.
22
CX-3 ® MAINTENANCE
500 Hours and 1000 Hour Maintenance
Perform the following maintenance every 500 hours.
(A)
Replace Spark Plug. Refer to
Engine Manual for details.
(B)
Have Authorized Repair Shop perform 500-hour maintenance.
Yearly and Two-Year Maintenance
Perform the following maintenance every year.
(C)
Have Authorized Repair Shop perform 1000-hour maintenance.
(A)
Inspect belts for proper tension and wear.
23
CX-3
®
MAINTENANCE
Check Fuel Level
For all Engine related maintenance and troubleshooting refer to the Engine Manual.
WARNING
NOTE:
1. Gasoline is highly flammable 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.
1. Fuel can damage paint and plastic. Be careful not to spill fuel when filling 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.
1 inch (25mm) from throat
Maximum
Fuel Level
Maximum
Fuel Level
(A)
Remove the Fuel Cap. Refer to
Engine Manual for details.
(B)
Ensure fuel level is 1” below the throat of the Fuel Tank.
(C)
Ensure fuel level is below the top of the strainer filter.
Checking Oil Level
NOTE:
When installing the Oil Dipstick, ensure the threads are aligned with the threads of the Oil Reservoir so as not to “cross-thread.”
(A)
Verify the Engine is upright and level. Refer to Engine Manual for details.
24
CX-3
®
MAINTENANCE
Changing Oil
For all Engine related maintenance and troubleshooting refer to the Engine Manual.
Oil is a major factor affecting performance and service life.
NOTE: 1. Drain used oil when the engine is warm.
2. Conform to Federal, State, and Local laws, codes and ordinances relative to
environmental protection for oil disposal.
(A)
Remove the Diamond Blade.
See Blade removal section.
(B)
Lower the CX-3 ® to its lowest position.
(C)
Free the Oil Drain Line.
Place a catch basin below the
Oil Drain Line. Remove the Drain
Cap to drain oil completely. Refer to Engine Manual for details.
Engine Air Filter Inspection Cleaning and Replacement
(A)
Clean the Air Filter. Refer to
Engine Manual for details.
25
CX-3
®
MAINTENANCE
Diamond Blade Removal
(A)
Locate Blade Guard lock.
(B)
Push Lock Button. Open the
Blade Guard Cover.
(C)
Remove the Blade Retaining Bolt and the Outer Flange.
(D)
Remove blade.
(E)
Install the new Blade, Retaining
Bolt and Outer Flange.
(F)
Tighten Blade Retaining Bolt while holding the Blade Shaft steady.
26
CX-3
®
MAINTENANCE
Spark Plug Adjustments and Replacement
For all Engine related maintenance and troubleshooting refer to the Engine Manual.
CAUTION DO NOT work around the engine while hot.
(A)
When installing the Spark Plug, ensure the threads are aligned with the threads in the engine so as not to
“cross-thread” the plug.
Handlebar Repositioning for Storage
(A)
Loosen the Tri-Knobs on both sides of the Handlebar.
(B)
Pivot the Handlebar in the forward direction towards the motor. Tighten the Tri-Knobs on both sides of the Handlebar.
27
CX-3
®
MAINTENANCE
Belt Adjustment and Replacement
In order to ensure the CX-3 ® operates at peak efficiency, the power transmission belt should be inspected monthly and changed if any signs of damage and/or excessive wear is observed.
NOTE: 1. When a new belt is installed, it should be inspected and retensioned after the first forty-eight (48) hours of operation.
(A)
Remove the Blade
(See Blade Removal section).
(B)
Locate and remove the Belt
Guard Retaining Bolts and then remove the Belt Guard.
(C)
Inspect the belt for excessive wear, cracks and cuts – if worn, proceed to Step E.
(D)
Check belt for proper tension if tension is correct, go to Step P (Proper tension is approximately 1/8-inch deflection of the belt).
(E)
Locate the four upper Engine
Mounting Nuts on both ends of the CX-3 ® motor and loosen.
(F)
Locate the four lower Engine
Mounting Bolts on both ends of the CX-3 ® motor and loosen.
28
CX-3
®
MAINTENANCE
(G)
Loosen the Motor Tension
Arm. Push the Motor forward to loosen the belt.
(H)
Remove the old belt from the
Engine and Blade Shaft Pulleys.
(I)
Clean and verify the alignment of the Engine and Blade Shaft
Pulleys.
(J)
Obtain and install a new belt onto the Engine Blade
Shaft Pulleys
(K)
Verify the belt is seated in all grooves of the Engine and Cutting Drum Pulleys.
(L)
Tighten the Motor Tension Arm.
(M)
Check belt for proper tension
(Proper tension is approximately 1/8-inch deflection of the belt).
(N)
Repeat Steps L and M until
Proper Tension is achieved.
(O)
Tighten the Engine Mounting Bolts.
29
CX-3
®
MAINTENANCE
(P)
Install the Belt Guard and Belt
Guard Retaining Bolts.
(Q)
Install the Blade (See Blade
Installation section).
30
CX-3
®
THEORY
THEORY OF DIAMOND BLADES
Diamond blades do not really cut; they grind the material through friction. Diamond crystals, often visible at the leading edge and sides of the rim/segment, remove material by scratching out particles of hard, dense materials, or by knocking out larger particles of loosely bonded abrasive material. This process eventually cracks or fractures the diamond particle, breaking it down into smaller pieces. As a result, a diamond blade for cutting soft, abrasive material must have a hard metal matrix composition to resist this erosion long enough for the exposed diamonds to be properly utilized. Conversely, a blade for cutting a hard, non-abrasive material must have a soft bond to ensure that it will erode and expose the diamonds embedded in the matrix. These simple principles are the foundation of “controlled bond erosion”
Types of Cutting
There are two basic types of cutting-Dry or Wet. The choice of which type of blade to use depends on:
• The requirements of the job
• The machine/tool utilizing the diamond blade
• The preference of the operator
In the case of DRY cutting, the overwhelming popularity and quantity of hand-held saws and the flexible nature of MK Diamond blades to professionally handle most ceramic, masonry, stone and concrete materials, make the DRY cutting blade a very attractive tool. When using a DRY blade, the user must be aware of distinct operating practices to ensure optimum performance. DRY cutting blades require sufficient airflow about the blade to prevent overheating of the steel core. This is best accomplished by shallow, intermittent cuts of the material with periods of “free-spinning” (for several seconds) between each cut, to maximize the cooling process.
For WET cutting applications, MK has the exact blade to compliment both the material to be cut and the wet cutting machine to be used. During cutting operations, liberal amounts of water act as a coolant to support the cutting effectiveness and longevity of the WET blade. Additionally, using water adds to the overall safety of cutting operations by keeping the dust signature down.
Know All You Can About the Material You Wish to Cut
31
CX-3
®
ACCESSORIES
ACCESSORIES
ITEM NUMBER
1 159615
2
3
4
5
6
159616
159617
159618
159619
159620
DECRIPTION
MK – CX10
12” x .100 x 1”
Premium Grade for Cured Concrete
MK – CX10
14” x .125 x 1”
Premium Grade for Cured Concrete
MK – AX10
12” x .125 x 1”
Premium Grade for Asphalt
MK – AX10
14” x .125 x 1”
Premium Grade for Asphalt
MK – GX10
12” x .110 x 1”
Supreme Grade for Green Concrete
MK – GX10
14” x .110 x 1”
Supreme Grade for Green Concrete
7 166784 Water Tank System
8 153877 Tachometer
9 166781 Lifting Bail
32
CX-3
®
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: Standard orders are $50.00 or more when ordering direct from MK Diamond. A $6.00 charge will be added to orders having a net billing value under $50.00. A nominal handling fee of $5.00 may apply to some orders.
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 the RGA number is on the outside of the returned package
• 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.
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.
33
CX-3
®
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.
WARRANTY: For your (1) one year warranty to be effective, complete the online Product Registration as soon as possible. Visit www.mkdiamond.com/registration
© COPYRIGHT 2019, 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 specifications included in this publication were in effect at the time of approval for printing.
34
NOTES
35
CX-3 ® Concrete Saw
OWNERS MANUAL & OPERATING INSTRUCTIONS
MK Diamond Products, Inc.
1315 Storm Parkway
Torrance, CA 90501
Toll-Free: (800) 421-5830
Phone: (310) 539-5221
Fax: (310) 539-5158

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