MK Diamond CX-3 User Manual

www.mkdiamond.com

Gas Powered

Concrete Saw

CX-3

OWNER’S MANUAL &

OPERATING INSTRUCTIONS

Revision 105

Manual Part# 159345

Caution: Read all safety and operating instructions before using this equipment. This owner’s manual MUST accompany the equipment at all times.

07.2012

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 nest 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

yourself with the CX-3

Concrete Saw by reading and reviewing this manual.

Read and follow all safety, operating and maintenance instructions.

Concrete Saw safely and correctly. Please take the time to familiarize

If you should have questions concerning your CX-3 ly 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.

Concrete Saw, please feel free to call our friend-

TABLE OF CONTENTS

SAFETY

Safety Messages 4 Damage Prevention Message 4 General Safety Precautions and Hazard Symbols 5 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 14-15

STARTUP, OPERATION and SHUTDOWN

Startup 16-17

Operation 18

Shutdown 19 Cleanup 20

MAINTENANCE AND TROUBLESHOOTING

Maintenance 21-31

THEORY

Theory Of Diamond Blades 32

ACCESSORIES ORDERING and RETURN INSTRUCTIONS

Accessories 33 Ordering Information 34 Return Material Policy 34 Packaging Instructions 34 Authorized Service Centers 34 Warranty 35

CX-3® 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 CX-3® Concrete Saw.

Before using this saw, ensure that the person operating the equipment has read and understands all

instructions in 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.

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.

NOTICE

You can cause PROPERTY DAMAGE to your machine if you don’t follow directions.

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.

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.

(

)

CX-3® SAFETY

GENERAL SAFETY PRECAUTIONS AND HAZARD SYMBOLS

SAFETY PRECAUTIONS

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.

KEEP GUARDS IN PLACE

In order to prevent injury, keep guards in place and in working order at all times.

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.

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.

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.

CX-3® SAFETY

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.

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.

ALWAYS USE SAFETY GLASSES

Safety glasses should always be worn when working around power tools. Everyday eyeglasses 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.

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.

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.

CX-3® SAFETY

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.

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 increase the risk of personal or by-stander injury.

NEVER STAND ON THE TOOL

Serious injury could occur if a power tool is tipped, or if a cutting tool is unintentionally contacted.

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 function. 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.

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/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.

CX-3® PRE-START

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.

• 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. Use machine only to cut concrete and asphalt. DO NOT use machine to cut wood or wood products.

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.

WARNING

Exhaust gas from gasoline engines contain dangerous carbon monoxide. 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.

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...

Prior to operation of this machine the operator must determine the existence

and location of any subsurface features that may be hazardous or could dam-

age the equipment, (i.e. electric cable, natural gas line etc.)

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.

DANGER

WARNING

(A)

(B)

(C)

(D)

The exhaust from this product

(E)

contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

DO NOT operate this equipment before reading the owners’ manual!

WARNING

CAUTION

DO NOT operate without guards in place.

(3 of them)

WARNING

In the event of blade failure, replace blade guard immediately.

DANGER

Concrete Saw Warning Label Sheet Part# 166009

Lethal exhaust gases. Use only in well ventilated areas. DO NOT use indoors.

WARNING

When refueling stop engine and allow to cool.

DO NOT overﬁll

tank.

CAUTION

DO NOT touch hot surface.

CAUTION

Accidental start hazard. Disconnect spark plug prior to servicing.

FOR INFORMATION ON

SERVICE OR WARRANTY

PLEASE CALL

1-800-474-5594

CAUTION

Keep hands and feet clear.

(F)

(G)

(H)

(I)

(J)

(K)

WARNING

Handle bar NOT a lifting point.

NOTICE

Overtensioning of belts will result in premature crank and/or bearing failure.

Read entire operatorʼs manual before operating this machine. Understand all warnings, instructions and controls. IF YOU DO NOT HAVE AN OPERATORʼS MANUAL, CALL TOLL FREE 1-800-474-5594

Machinery Hazard - Always keep all guards in place and in good condition. Always keep all parts of your body away from blade and all other moving parts. Never allow blade exposure to exceed 180°.

Always use blades with a rated speed above the blade shaft speed. Excessive speed can cause blade breakage. Verify speed by checking blade shaft RPM, pulley diameters and blade flange diameter.

WARNING

Always wear safety approved hearing, eye, head and respiratory protection

(L)

(M)

Never use damaged blades or equipment.

Never operate this machine in areas of combustible material.

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains 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

(N)

Location Description

Motor Plate Read Manual

Arm Proposition 65, Dust Warning

Shaft Cover & Belt Guard Guards in Place

Blade Guard Replace Blade Guard

Gas Tank/Side Exhaust/Cancer

Gas Tank/Top Lethal Exhaust

Gas Tank/Top Refueling

Gas Tank/Top Belt Guard Hot Surface

Gas Tank/Side Accidental Start

Frame/Back Service

Frame/Front Hand & Feet Clear

Handle Lifting Point

Belt Guard Overtensioning Belts

Console Machinery Hazard

CX-3® PRODUCT SPECIFICATION

PRODUCT SPECIFICATIONS

The CX-3 the CX-3

General Description

The CX-3® is engineered as a portable concrete saw powered by a Subaru, Honda or Kohler gas engine. The saw is capable of cutting up to ve and half (5-1/2) inches in depth.

MotorandWeightSpecications

Motor and Weight specications for the CX-3

is a versatile gas powered Concrete Saw. Operated and used according to this manual,

will provide years of dependable service.

are listed below.

Motor Type 4-Stroke, Overhead valve, single cylinder Max RPM 3600 RPM Blade Speed 3400 to 3600 RPM (Depending on Blade Diameter) Fuel Tank Capacity

See Engine Manual for details

Engine Oil Capacity Weight Approximately 116 lbs.

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

• Blade guard mounts on either left- or right-hand side of saw and cuts within 1” of wall or curb

• 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

+ 25 hidden pages

MK Diamond CX-3 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual