MK Diamond Products MK CX-3 User manual

CAUTION:
Read all safety and
operating instructions
before using this
e
q
ui
p
ment
GAS POWERED CONCRETE SAW
OWNER’S MANUAL &
OPERATING INSTRUCTIONS
Enter the Serial Number of your new saw in the
space below. The Serial Number is located on the
Rear Crossbar
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.
SERIAL NUMBER:
MK CX-3

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 2
INTRODUCTION and TABLE OF CONTENTS
INTRODUCTION:
We at MK Diamond want to congratulate you on selecting the MK CX-3 Concrete Saw. We are certain that
you will be pleased with your purchase. MK Diamond takes pride in producing the finest products in the
industry.
Operated correctly, your MK CX-3 should provide you with years of quality service. In order to help you, we
have included this manual. This owner’s manual contains information necessary to operate and maintain
your MK CX-3 safely and correctly. Please take a few minutes to familiarize yourself with the MK CX-3 by
reading and reviewing this manual.
If you should have questions concerning your MK CX-3, please feel free to call our friendly customer service
department at: 800 421-5830
TABLE OF CONTENTS
Page
SAFETY:
Safety Messages 3
Damage Prevention Message 3
General Safety Precautions and Hazard Symbols 3
California Proposition 65 Message 5
Safety Label Locations 6
Brick Saw Specific Warnings 7
Product Specifications 7
UNPACKING AND ASSEMBLY
Unpacking 8
Contents 8
Transport 9
Assembly 10
SETUP, STARTUP, ADJUSTMENT AND OPERATION
Setup 15
Start Up 16
Adjustment and Operation 17
Cleanup 20
MAINTENANCE AND TROUBLESHOOTING
Maintenance 21
EXPLODED VIEW AND PARTS LIST
Exploded View 37
Parts List 38
THEORY
Theory of Diamond Blades 42
ACCESSORIES, ORDERING and RETURN INSTRUCTIONS
Accessories 43
Ordering Information 44
Return Material Policy 44
Packaging Instructions 44
Authorized Service Centers 44
Manual Part No. 159348 Revision 07/15

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 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 MESSAGES:
Safety messages inform the user about potential hazards that could lead to injury, death and/or equipment
damage. Each safety message will be preceded by one of the following (3) three words that identify the
severity of the message.
Not following instructions WILL lead to DEATH or SERIOUS INJURY
Not following instructions COULD lead to DEATH or SERIOUS INJURY
Not following instructions CAN lead to injury
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. The word note, as in the example below will precede each message.
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!
Safety Precautions:
KEEP GUARDS IN PLACE.
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 start the engine near spilled fuel. Never use gasoline as a cleaning agent.
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
confined area.
ELECTRICAL SHOCK!
Never touch electrical wires or components while the motor is running. Exposed, frayed or worn
electrical motor wiring can be sources of electrical shock that could cause severe injury or burns.
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 equipment is operated
speeds above design maximum.
In order to prevent injury, keep guards in place and in working order at all times.
(
(
)
)

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 4
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 PROTECTON!
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.
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 operate a
power tool is safer.
on

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 5
SAFETY
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 instructions 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, and the like.
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 finished.
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 always be
installed such that rotation is in the direction of the arrow imprinted on the side of the blade or cutter.
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.
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
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 filter out microscopic particles.
For further information, consult the following sources:
http://www.osha-slc.gov/sltc/silicarystalline/index.html
http://www.oehha.org/prop65/out_of_date/6022kLstA.html

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 6
SAFETY
SAFETY LABEL LOCATIONS:
Safety labels are located according to Figures 1 to 7 below. The labels contain important safety information.
Please read the information contained on each safety label. These labels are considered a permanent part of
your saw. Please, contact MK Diamond or your dealer for a replacement, if a label comes off or becomes
hard to read.
Item Location Description Part No.
1 Console Assembly Operating and Safety Instructions 159208
2 Horizontal Frame Support Serial Tag 159251
3 Outer Blade Guard Warning – Blade Failure 155588
4A Inner Blade Guard Caution – Do Not Lift Blade Guard 155586
4B Shaft Cover Caution – Do not Operate with Guards Removed 155587
5 Fuel Tank – Right Side Warning – When Refueling Stop Engine 155580
6A Fuel Tank – Top Danger – California Warning 155581
6B Fuel Tank – Top Warning – Engine Mfg. Label N/A
6C Fuel Tank – Top Caution – Hot Surface 155578
6D Fuel Tank – Front Danger – Lethal Exhaust 155582
7A Belt Guard Caution – Do Not Operate with Guards Removed 155587
7B Belt Guard Caution – Accidental Start Hazard 155579
7C Belt Guard Caution – Over tensioning Belt Hazard 155583
7D Belt Guard Caution – Keep Hands and Feet Clear 155585
6
2
5
3
4
A B
7
B C
D
A
6
BC
D
A
1

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 7
SAFETY
CX-3 SPECIFIC WARNINGS:
 Read Owners Manual
 Wear Protective Gear for – Lungs Ear Eye
PRODUCT SPECIFICATIONS:
The MK CX-3 is a versatile Concrete Saw. Operated and used according to this manual, the MK CX-3 will
provide years of dependable service.
General Description:
The MK CX – 3 is engineered as a portable concrete saw powered by a 6 horsepower, Robin gas engine or a
6.5 horsepower Honda gas engine. The saw is capable of cutting up to five (5) inches in depth.
Motor and Weight Specifications:
Motor and Weight specifications for the MK CX-3 are listed in Table 2 below.
Motor Type 4-stroke, Overhead valve, single cylinder
Max Power Output 6 / 6.5 Hp
Max RPM 3600 RPM
Blade Speed 3400 to 3600 RPM (Depending on Blade Diameter)
Fuel Tank Capacity 2.7 Liters
Engine Oil Capacity 0.6 Liters
Weight Approximately 185 lbs.
Table 2
Blade:
The MK CX-3 uses a 12 to 14 inch diameter diamond blade.
Concrete Saw Usage:
The MK CX-3 is designed to cut various grades of concrete surfaces.
Features:
• Conveniently placed engine controls for ease of usage
• Height adjusting screw designed to accurately adjust the depth of the cut
• Ergonomically designed handlebar to reduce operator fatigue
• Poly micro V-belt to ensure maximum power transfer from the engine to the blade.

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 8
UNPACKING, TRANSPORT and ASSEMBLY
UNPACKING:
Your MK CX-3 has been shipped from the factory thoroughly inspected. Only minimal assembly is required.
If not already done, remove the MK CX-3 from the pallet and place it on a flat surface (lift the Concrete Saw
using the lifting points shown below.
CONTENTS:
In the containers, you will find one (1) MK CX-3, one (1) Diamond Blade, two (2) Blade Shaft Wrenches, one
(1) Handlebar, two (2) Handlebar Tri-knobs, two (2) Tri-Knob Washers, one (1) Ball Knob, one (1) Shoulder
Bolt, one (1) Pointer Arm, one (1) Pointer Wheel, one (1) Pointer, one (1) CX-3 Owners Manual, one (1)
Robin’s or Honda’s Engine Owners Manual and one (1) warranty card.
MK CX-3 Diamond
Blade 2 Blade Shaft Wrench Handlebar Handlebar Tri-Knob
Tri-Knob
Washer Ball Knob & Shoulder Bolt Pointer Arm Pointer Wheel Pointer
CX-3
Owners Manual Robin or Honda Owner’s Manual Warranty Card

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 9
UNPACKING, TRANSPORT and ASSEMBLY
TRANSPORT:
1. The MK CX-3 weighs approximately one hundred and eighty-five (185) pounds), use care
when transporting.
2. Two people are required to lift and transport the MK CX-3.
To lift the CX-3, one person will lift by grasping the Handlebar (either extended or folded) and one person will
lift by grasping the Lifting Rung on the front of the CX-3 as identified below.
Lift Points
Handlebar
Lift Point
Lifting Rung
Lift Point

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 10
UNPACKING, TRANSPORT and ASSEMBLY
ASSEMBLY:
Follow the assembly instructions to prepare your MK CX-3 for operation.
1. Handlebar Assembly:
(D)
Install one Tri-Knob through the
Handlebar and into the threaded
hole on the CX-3 console frame
(C)
Install one Tri-Knob Washer onto
each Tri-Knob
(B)
Align the Handlebar with the
threaded holes on the sides of the
CX-3 console frame
(A)
Locate the threaded holes on
both sides of the CX-3 console
frame
(E)
Repeat Step “C” on the opposite
side of the CX-3
Console
Frame Threaded
Hole
Handleba
r
Washe
r
Tri-Knob
Threaded
Hole
Tri-Knob Second
Tri-Knob
Opposite
Side
Console
Frame Threaded
Hole

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 11
UNPACKING, TRANSPORT and ASSEMBLY
2. Cutting Pointer Arm Installation:
3. 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.
(B)
Locate the Blade Retaining Screw,
the Outer and the Inner Flange
(A)
Open the Blade Guard Cover
Direction
to Open
Cove
r
Inner and Outer
Flanges
Retaining
Screw
(C)
Install the Pointer Wheel, the
Pointer and the Pointer Retaining
Cli
p
(B)
Tighten the Nylock Nut and 3/4-
inch screw
(A)
Install the Pointer Arm using the
Stop Clip, a 3/4-inch screw, flat
washer and a Nylock Nut
(F)
Rotate the Pointer down
(E)
Rotate the Pointer Arm into the
upright position
(D)
Tighten the Retaining Clip
Thumbscrew
Stop Clip, Screw,
Flat Washer and
Nu
t
Pointer Ar
m
Tighten Retaining
Clip
Pointer
Wheel
Pointe
r
Retaining
Clip
Thumbscrew
Rotate Pointe
r
Rotate

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 12
UNPACKING, TRANSPORT and ASSEMBLY
(D)
Place the Blade Shaft Wrench
onto the flat section of the Blade
Shaft
Shaft
Wrench
Shaft
(E)
Loosen the Blade Retaining Screw
while holding the Shaft Wrench
steady
Retaining Nut
Wrench
Shaft
Wrench
(F)
Remove the Blade
Retaining Screw
Retaining Nut
Removed
(G)
Remove the Outer Flange
Outer
Flange
(H)
Install the Diamond Blade onto the
Blade Shaft
Diamond
Blade
(I)
Verify the direction of rotation
arrow of the Blade matches the
direction of rotation on the CX-3
Rotational
Arrow
(J)
Install the Outer Flange
Outer
Flange
(K)
Verify the Outer Flange is seated
against the Blade
Flush Against
Blade
Outer
Flange
Blade
(L)
Install the Blade Retaining Screw
Retaining
Screw

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 13
UNPACKING, TRANSPORT and ASSEMBLY
4. Filling Oil Reservoir:
NOTE: SAE 10W-30 is recommended for general use in temperatures of – 4ºF (20ºC) and above. If you
are operating outside of this range, consult the chart in this manual.
Engine Oil Capacity is 0.63 US qt (0.6l).
(C)
Remove the Oil Reservoir
“Dipstick”
(B)
Verify the Oil Drain Cap is
installed onto the Oil Drain Line
and is tight
(A)
Read and remove caution tag
attached to the Gas Cap
(F)
Cleanup any excess oil
(E)
Install the Oil Reservoir
“Dipstick”
(D)
Fill the Oil Reservoir
(CAUTION: Do not overfill)
Read
Turn counter-
clockwise to tighten
Dipstick
Oil Drain
Cap
Oil Drain
Line
Fill through Reservoir
oil level hole Dipstick
Turn clockwise
to tighten Wipe up
excess oil

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 14
UNPACKING, TRANSPORT and ASSEMBLY
5. Filling Fuel Tank:
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, barbecues, electric appliances, power tools,
etc.
5. Wipe up spills immediately.
NOTES: 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.
3. Use unleaded gasoline with a pump octane rating of 86 or higher.
(C)
Verify fuel level is below
the throat of the Fuel Tank
(B)
Fill Fuel Tank
(A)
Remove the Fuel Cap
(D)
Install the Fuel Cap
Fill Throa
t
Fill Throa
t
Upper Limit
Turn counter-
clockwise to
loosen
Fuel Cap
Turn clockwise
to tighten
Fuel Cap

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 15
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
SETUP:
1. 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.
(E)
Verify the CX-3 rolls freely
(D)
Verify the Height Adjusting
Wheel moves freely and the CX-3
moves up and down smoothly
(C)
Inspect the MK CX-3 for
general damage and/or loose
hardware
(F)
Check for proper oil level
(See Maintenance section if low)
(B)
Inspect Engine for leaks
(H)
Check Air Filter for cleanliness
(See Maintenance section
if dirty)
(G)
Check for proper fuel level
(See Maintenance section if low)
Fill Throa
t
Upper Limit Air Filte
r
(A)
Inspect Blade for damage – Verify
Blade correct for material being
cut
Look for leaks
Verify ease of
movemen
t
Verify ease of
movemen
t
Proper Oil Level
Low Level

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 16
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
STARTUP:
2. Engine Start:
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: If restarting a warm engine the Choke Lever may be left in the Half Open or in the OPEN position.
(D)
Move the Throttle Lever to
1/3rd open
(C)
Place Choke Lever in the CLOSED
position
(B)
Place Fuel Valve in the ON
position
Choke Leve
r
(G)
Pull Starter Cord straight back in
a smooth fast motion
(F)
Pull Starter Cord slowly, until
slack is removed and resistance
is felt
(E)
Place Engine Switch in the
ON position
(H)
Place Choke Lever in the OPEN
position when engine is warm
(A)
Use the Depth Control Wheel to
raise the Blade clear of the floor
Raise
Blade
Rotate
clockwise
to raise
Direction of
Movemen
t
Fuel Valve Direction of
Movemen
t
Direction of
Movemen
t
Throttle Lever Engine Switch Direction of
Movemen
t
Direction of
Movemen
t
Starter Cord
Starter Cord
Direction of
Movemen
t
Direction of
Movemen
t
Choke

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 17
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
OPERATION:
3. Standard Operation:
The following is a brief overview of operating the CX-3.
A
B
(C)
Lower the Pointer Assembly
(B)
Attach the cooling supply hose to
the Cooling Inlet of the CX-3
(A)
Verify the Blade is clear of the
operating surface
Blade
Raised
Rotate
clockwise
to raise
(E)
Layout and mark the area to be cut
using a Chock-line or etc.
(D)
Using a Straightedge, align the
Pointer to the Blade
(H)
Start the CX-3 using the Engine
Start procedure on Page 16
(G)
Lift the rear wheels slightly off the
ground and swing the rear of the
saw around until the pointer and
Blade are over the line; do not tilt
the saw too far forward to keep
the Blade from contacting the
concrete
(F)
Push the saw diagonally across the
marked cut line and stop when the
distance from the rear of the saw to
the line (distance A) and the
distance from the pointer to the line
(distance B) are approximately
equal
(D)
Tighten the Retaining Clip
Thumbscrew
Retaining
Clip
Thumbscrew
Cooling
Inle
t
Connect
Cooling
Su
pp
l
y
Lower
Pointe
r
Align with
Straightedge
Blade Pointe
r
Mark
Line
Pointer
Movemen
t
Lift and
Move
Cut Line
Direction
of Push Start
CX-3

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 18
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
(P)
Close Cooling Supply Valve
(O)
When the Cut is Complete, Raise
the Blade
(K)
Verify proper cooling flow and
adjust the water flow on the blade
to a desired amoun
t
(I)
With the engine running adjust
the throttle approximately half
way
(J)
Open Cooling Supply Valve
Direction of
Movemen
t
Throttle Lever
(L)
Adjust the throttle as needed to
make the cut
Direction of
Movemen
t
Throttle Lever
(N)
Perform the cut using only enough
pressure to follow the original
marked line. Do not attempt to
steer the saw
(M)
Slowly lower the Blade until the
desired level is reached and begin
the cut
Cooling
Supply Valve
Direction
to Open Verify
Flow
Blade
Lowered
Rotate Counter-
clockwise to Lowe
r
Perform
Cu
t
Direction
of Cu
t
Blade
Raised
Rotate
clockwise
to raise
Cooling
Supply Valve
Direction
to Open

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 19
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
SHUTDOWN:
4. Normal Engine Shutdown:
5. Emergency Engine Shutdown:
(C)
Place Engine Master Switch in the
OFF position
(B)
Move the Throttle Lever to the
minimum “Slow” position to lower
the Blade speed
(D)
Place Fuel Valve in the OFF
position
(B)
Move the Throttle Lever to lower
blade speed
(A)
Raise or Verify the Blade is
raised
(A)
Place Engine Master Switch in the
OFF position
(C)
Place Fuel Valve in the OFF
position
Direction of
Movemen
t
Throttle Leve
r
Blade
Raised
Rotate
clockwise
to raise
Direction of
Movemen
t
Engine Switch
Direction of
Movemen
t
Fuel Valve
(E)
Raise the Pointer Assembly
Raise
Pointe
r
(F)
Rotate the Pointer downward
Lower
Pointe
r
Direction of
Movemen
t
Engine Switch Direction of
Movemen
t
Throttle Leve
r
Direction of
Movemen
t
Fuel Valve

MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 20
SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN
6. Cleanup:
Engine parts are extremely hot following use, allow engine to cool 1/2-hour before cleaning. Use
care during cleanup to avoid injury.
NOTE: 1. To extend operating life, the Concrete Saw should be cleaned following every use.
2. Using a garden hose or pressure washer can force water into the air cleaner or muffler opening.
3. Use care when cleaning around electrical components.
(F)
Clean engine throttle linkage with a
dry cloth
(C)
Clean around the Depth Control
Wheel bearing
Soap and
Wate
r
(A)
Clean the CX-3 with soap and
water
(E)
Clean the remainder of the exterior
surface of the CX-3 (except the
engine)
(D)
Clean the Depth Control Screw
Depth Control
Wheel Bearing
(B)
Verify the engine is off and cool
before beginning to clean
Depth Control
Screw
(D)
Raise the Blade
Blade
Raised
Rotate
clockwise
to raise
(E)
Raise the Pointer Assembly
Raise
Pointe
r
(F)
Rotate the Pointer downward
Lower
Pointe
r
Engine Off
Clean Exterior
Surfaces Throttle Linkage