MK Diamond Products PX-3 Application guide

PX-3 PAVER EXTREME
DRY PAVER SAW
OPERATION & PARTS MANUAL
www.mkdiamond.com
MK Diamond Products, Inc.
Caution: Read all safety and operating instructions before
using this equipment.This manual MUST accompany the
equipment at all times.
03.29.2009
Revision 101
Manual Part No. 160445

22
PX-3 PAVER EXTREME NOTES

3
MK DIAMOND PX-3 PAVER EXTREME
SAFETY
Safety Message/Alert Symbols 4
Safety Warnings 5
Hazard Symbols 6
General Safety 7-8
Electric Motor Safety 9
Electrical Requirements and Grounding Instructions 10-11
Operation & Safety Decals 12-13
PRODUCT SPECIFICATIONS
Specications 14
INSPECTION & SET-UP
Unpacking & Contents 15
Assembly & Setup 17-18
OPERATION
Chop & Cross Cutting 19
Rip & Angle Cutting 20
MAINTENANCE
Clean Up 21
Blade Dressing 23
Blade Change 24
Motor Brush Change 25
GENERAL PRODUCT INFORMATION
Parts List: Final Assembly 27-29
Accessories 31
Ordering Information 32
Contact Information and Limited Warranty 33
PAGE NO.
PX-3 PAVER EXTREME TABLE OF CONTENTS

4
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 and Part Manual has been developed to provide complete instructions for the safe and
efcient operation of the MK 1080 Paver 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.
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.
PX-3 PAVER EXTREME SAFETY

5
PX-3 PAVER EXTREME SAFETY
SAFETY WARNINGS
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.
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/SLTC/silicacrystalline/index.html
http://www.oehha.org/prop65/out_of_date/6022kLstA.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.

6
PX-3 PAVER EXTREME SAFETY
Potential hazards associated with the MK 1080 Paver Saw will be referenced with Hazard Symbols which
appear throughout this manual, and will be referenced in conjunction with Safety Message Alert Symbols.
NEVER operate equipment with covers, or guards removed.
ALWAYS place the power ON/OFF switch in the OFF position when the MK 1080 Paver Saw
is not in use.
ALWAYS wear approved eye protection.
HAZARD SYMBOLS
ON / OFF
ALWAYS wear approved respiratory protection.
ALWAYS read this Owner’s Manual before operating the machine.
ALWAYS avoid inhalation of and skin contact with silica dust and/or mist.
ALWAYS use caution around gears. Keep ngers, hands, hair and clothing away from all moving
parts to prevent injury.
DO NOT touch hot engine components while the machine is running or immediately after
operating.
NEVER touch the power cord with wet hands or while standing in water when it is connected
to a power source.
NEVER operate the machine in an explosive atmosphere or near combustible materials.

7
 •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 wear proper respiratory, hearing and shatterproof eye protection.
NEVER operate this equipment without protective clothing and steel toed boots.
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.
 •NEVER leave the machine unattended.Turn off electric motor when unattended.
CAUTION must be observed while servicing the machine. Rotating parts can cause injury if contacted.
Ensure that any electrical extension cord is protected against damage. ALWAYS ensure that the electrical
extension cord is not trapped underneath the machine.
DO NOT allow extension cord to come into contact with water or uids. DO NOT spray water onto electric motor.
 •NEVER operate the machine in an explosive atmosphere.
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.
Become familiar with the controls of the machine before operating.
•
•
•
•
Failure to follow instructions in this manual may lead to serious injury or even death! This equipment is to
be operated by trained and qualied personnel only! This equipment is for industrial use only.
The following safety guidelines should always be used when operating the PX-3 Paver Saw.
GENERAL SAFETY
•
•
•
•
•
•
•
•
DANGER
RULES FOR SAFE OPERATION
ON / OFF
PX-3 PAVER EXTREME SAFETY

8
ALWAYS disconnect AC power plug from power source before moving or servicing the machine.
Make sure the OFF/ON power switch on the electric motor is always in the OFF position before inserting
the machine’s power plug into an AC receptacle.
Operate electric motor only at the specied voltage indicated on the nameplate.
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.
The PX-3 Paver Saw is designed to be used only with approved diamond cutters.
•
•
•
•
•
•
•
•
•
•
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.
MAINTENANCE SAFETY
WARNING
DO NOT use woodcutting, or carbide blades on this machine! Use O N LY Diamond blades on machine. Use
machine only to cut tile and masonry products. DO NOT use machine to cut wood or wood products.
PX-3 PAVER EXTREME SAFETY

9
ELECTRIC MOTOR SAFETY
For maintenance care and operation of the electric motor, refer to your electric motor instruction booklet
furnished with the electric motor.
Protect the electric motor from dust as much as possible and keep ventilating openings clean.
Electric Motor Connection
ALWAYS make certain that the power source required for the electric motor is correct and always use the
correct NEMA conguration plug. Motors can burn out when the line voltage falls 10% below the voltage rat-
ing of the motor. Failure to use proper voltage will cause the motor to overheat. Make certain that the correct
size grounded (3-wires) extension cord is used. See the table below.
•DONOT spray water on the electric motor. Do not touch the plug with wet hands.To reduce
the risk of electrocution, keep all connections dry and off the ground.
•DONOT operate electric motor in an explosive environment.
CAUTION
NOTICE
Most Motor Problems are caused by improper
voltage and extension cords. Cord should be
one-piece and short as possible. Cord
selection should match the following table.
1-2 H.P.
25’
50’
75’
100’
150’
250’
Max. Cord Length
Max. Cord Length
Max. Cord Length
No. 12 Wire
No. 10 Wire
No. 8 Wire
115v 230v
Fig. 1 Extension Cord Table
WARNING
Use only extensions cords that are intended for outdoor use. These extension cords are identied by a
marking “Acceptable for use with outdoor appliances; store indoors while not in use.” Use only extension
cords having an electrical rating not less than the rating of the product. Do not use damaged extension cords.
Examine extension cords before using and replace if damaged. Do not abuse extension cords and do not yank
on any cord to disconnect. Always disconnect the extension cord from the receptacle before disconnecting
the product from the extension cord.
WARNING
To choose the proper extension cord:
•
•
Locate the length of extension cord needed in
table to the right.
Once the proper length is found, move down the
column to obtain the correct AWG size required
for that length of extension cord.
Use of undersize extension cords result in low voltage to the motor that can result in motor burnout and
premature failure. MK Diamond warns that equipment returned to us showing signs of being run in a low
voltage condition, through the use of undersized extension cords will be repaired or replaced totally at the
customers expense. There will be no warranty claim.
PX-3 PAVER EXTREME SAFETY

10
In order to prevent potential electrical shock and injury, the following electrical safety precautions and symbols
should be followed at all times!
In case of a malfunction or breakdown, grounding provides a path of least resistance for electric current to
reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding
conductor and a grounding plug. The plug must be plugged into a matching outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
•
•
•
•
•
ELECTRICAL REQUIREMENTS AND GROUNDING INSTRUCTIONS
WARNING
Do not modify the plug provided – if it will not t the outlet; have the proper outlet installed by a qualied
electrician.
Improper connections of the equipment-grounding conductor can result in a risk of electric shock. The
equipment-grounding conductor is the insulated conductor that has an outer surface that is green, with or
without yellow stripes. If repair or replacement of the electric cord or plug is necessary, do not connect
the equipment-grounding conductor to a live terminal.
Check with a qualied electrician or service personnel if the grounding instructions are not completely
understood, or if in doubt as to whether the tool is properly grounded.
Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the
tool’s plug.
Repair or replace a damaged or worn cord immediately.
WARNING
This tool is intended for use on a circuit that has an outlet that looks like the one shown in Sketch A of
Figure 2. The tool has a grounding plug that looks like the plug illustrated in Sketch A of Figure 2. A temporary
adapter, which looks like the adapter illustrated in sketches B and C, may be used to connect this plug to a
2-pole receptacle as shown in Sketch B, if a properly grounded outlet is not available. The temporary adapter
should be used only until a properly grounded outlet can be installed by a qualied electrician. The green-
colored rigid ear, lug, and the like, extending from the adapter, must be connected to a permanent ground such
as a properly grounded outlet box.
NOTE: Use of a temporary adapter is not permitted in Canada.
Grounding
Means
(A)
Metal Screw
Cover of
Grounded
Outlet Box
(D)
ADAPTER
(C) Grounding
Pin
Grounding
Pin (B)
Fig. 2 Circuit and Adapter Information
PX-3 PAVER EXTREME SAFETY

11
Supporting
Surface
Power
Tool
Drip Loop
Power
Cord
To reduce the risk of electrocution, keep all connections dry and off the ground.
A Ground Fault Circuit Interrupter (GFCI) should be provided on the circuit(s) or outlet(s) to be used for this
machine. Receptacles are available having built-in GFCI protections and may be used for this measure of safety.
When using an extension cord, the GFCI should be installed closest to the power source, followed by the
extension cord and lastly, the machine.
WARNING
WARNING
The pump requires a GFCI. To reduce risk of electric shock when operating the machine with the pump
plugged into the 3-pole receptacle on the motor, connect the saw to a GFCI outlet. See the pump manual and
informational tags enclosed separately for all pump information.
Fig. 3 Drip Loop Information
To avoid the possibility of the appliance plug or receptacle getting wet, position the machine to one side of
a wall mounted receptacle. This will prevent water from dripping onto the receptacle or plug. A “drip loop,”
shown in Figure 3, should be arranged by the user to properly position the power cord relative to the power source.
The “drip loop” is that part of the cord below the level of the receptacle, or the connector, if an extension
cord is used. This method of positioning the cord prevents the travel of water along the power cord and
coming in contact with the receptacle.
If the plug or receptacle gets wet, DO NOT unplug the cord. Disconnect the fuse or circuit breaker that
supplies power to the tool. Then unplug and examine for presence of water in the receptacle.
WARNING
PX-3 PAVER EXTREME SAFETY

12
The PX-3 Paver Saw is equipped with a number of safety decals.These decals are provided for operator safety
and maintenance information.The illustration below also shows the location of these decals. Should any of
these operation or safety decals become unreadable, replacements can be obtained by calling (800) 262-
1575.
OPERATION & SAFETY DECALS
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.
!
DO NOT operate
this equipment
before reading
the owners’
manual!
WARNING
!
NOTICE
Most Motor Problems are caused by improper
voltage and extension cords. Cord should be
one-piece and short as possible. Cord
selection should match the following table.
1-2 H.P.
25’
50’
75’
100’
150’
250’
Max. Cord Length
Max. Cord Length
Max. Cord Length
No. 12 Wire
No. 10 Wire
No. 8 Wire
115v 230v
Decal C
Decal A
Decal B
Figure 5. PX-3 Masonry Saw Safety Decal Sheet, Part No. 166011
PX-3 PAVER EXTREME SAFETY

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SAFETY DECAL LOCATIONS
Decal
A
B
C
Location Description
Cutting Head, Side Silica Dust Warning
Motor,Top Extension Cord Notice
Assembly Frame Read Owner’s Manual Warning
Fig. 6 PX-3 Paver Saw Safety Decal Locations
AB
C
PX-3 PAVER EXTREME SAFETY

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PX-3 PAVER EXTREME PRODUCT SPECIFICATIONS
• The PX-3 is a versatile lightweight, dry, masonry saw
• Engineered as a 14” dry saw, consisting of a powerful 120V motor in a hard plastic
case and a PX-10 cutting blade with a 5-1/2” cutting depth
• Specially designed 14” diameter segmented dry MK Diamond blade with a .110 inch
cutting width
• The PX-3 can cut a variety of masonry types including slump stone block, wall brick,
paver brick, roong tile, marble, granite, decorative rock, or almost any other non-
ferrous material
• The PX-3 is designed with a lockable trigger-operated switch in the handle to allow
for ease of operation
• Includes a Dust Collector nozzle that can be used to remove dust from the Lower
Case, using your shop vacuum’s 2-1/2 inch diameter hose
• Designed with an easy clean motor air lter to extend the life of the motor
• Replaceable motor brushes to extend operating life
• Pivoting backstop cuts material at any angle
• Motor has built-in thermal overload protection and dynamic brake
PX-3PaverSawSpecications
Model 160256
Motor 120V/60 Hz
Amps 13 AMP
Horsepower 1-3/4 HP
Blade RPM 3,500 RPM
Blade Capacity 14" (356 mm)
Arbor Size 1"
Depth of Cut 5-1/2" (14" Blade)
Maximum Depth of Cut 10-3/4" for materials up to 3" thick
Weight 37 lbs.
Saw Dimensions (LxWxH)
- inches/mm
21" x 16" x 18"
527 x 406 x 457 mm

15
PX-3 PAVER EXTREME INSPECTION & SET-UP
UNPACKING
In the PX-3 packaging containers you will nd:
CONTENTS
Your PX-3 Paver Saw has been shipped from the factory thoroughly inspected. Only minimal assembly is re-
quired. If not already done, remove the PX-3 from the carton and place it on a at surface. Remove strapping.
Remove the accessories box from the main carton and place along side the PX-3. Note that the Operation
and Parts Manual is in the accessories box.
1 2 3 4
ITEM
NO. DESCRIPTION QUANTITY
1 PX-3 PAVER SAW 1
2SEGMENTED DRY DIAMOND BLADE 1
3REPLACEMENT MOTOR AIR FILTER 1
4DUST NOZZLE 1
5BLADE WRENCH 1
6SHAFT WRENCH 1
7OPERATION & PARTS MANUAL 1
8WARRANTY CARD 1
5 6 7 8

16
TRANSPORT
•
•
The PX-3 weighs approximately thirty ve (35) pounds, making transport easy.
ALWAYS observe safe lifting practices when lifting the PX-3.
CAUTION
Fig. 7 Transporting the PX-3
Lock the Cutting Head in the DOWN position using the Locking Pin when transporting the PX-3.
Due to its lightweight construction, the PX-3 is designed to be carried by the durable aluminum frame. Simply
lock the spring assisted Cutting Head (A) in the DOWN position, grasp the frame by the lower front and upper
back cross members (B), then lift and transport the PX-3 to the desired work location.
NOTICE
A
B
B
PX-3 PAVER EXTREME INSPECTION & SET-UP

17
ASSEMBLY
Follow the assembly instructions to prepare your PX-3 for operation.
Fig. 8 Identify Blade parts
DUST NOZZLE
The PX-3 Dust Nozzle (Figure 12) assists on the removal of dust and debris from the cutting area. Its shape is
designed so it directs the ow of these particles to the shop vac hose (not included). The hose required is a 2-
1/2” in diameter. Connect the hose from your shop vac (not included) to the Dust Collector Outlet located at
the rear of the PX-3 Cutting Area (Figure 13).
DIAMOND BLADE INSTALLATION
When installing the Retaining Screw, do not “cross-thread” and DO NOT overtighten the screw.
1.
2.
3.
4.
NOTICE
Identify Blade Retaining Screw and Outer Flange (Figure 8).
Remove Blade Retaining Screw and Outer Flange (Figure 9).
Install and seat Blade.Verify Rotation (Figure 10).
Install Blade Retaining Screw and Outer Flange then tighten (Figure 11).
Fig. 9 Remove parts Fig. 10 Install Blade Fig. 11 Install parts
Dust Nozzle
Attach Dust
Nozzle with
Shoulder
Thumb Screw
and Washer
Nut
Fig. 12 Dust Nozzle location Fig. 13 Dust Collector Outlet location
PX-3 PAVER EXTREME INSPECTION & SET-UP

18
SETUP
PRE-START INSPECTION
The pre-start inspection should be performed before beginning any job.
•
•
•
•
•
CAUTION
Before powering or starting, check for damage that could prevent this equipment from proper operation
or performing its intended function. Check for binding and alignment of moving parts. Check for damaged,
broken or missing parts.
Verify the trigger switch-locking button is in the RELEASE position.
Before connecting the PX-3 to a power supply, be sure the voltage, cycle and phase of the job site power
source meet the following requirements:
If using an extension power cord, make sure the length and wire gauge corresponds to the requirements
listed in the table on page 9.An extension power cord that is too small in wire gauge (diameter), or too long
in length, will cause the motor to overheat and could cause premature failure.
DO NOT cover the motor vents.This could lead to motor overheating.
Fig. 14 Pre-start Inspection Locations
VOLTAGE 120V
CYCLE 60 Hz
PHASE 1-PHASE
PORTABLE GENERATOR
If using a portable generator to provide power, ensure the generator meets the following minimum requirements:
8kW 120V/240 66.7/33.3 AMPS SINGLE PHASE
CAUTION
In order to avoid breaker tripping, a 20-amp circuit breaker should be used.
If the Diamond Blade shows signs of fatigue cracking, replace the Blade before starting work. See the Diamond
Blade Change Out section on Page 24.
1.
2.
3.
4.
Inspect the Blade for damage.Verify the Blade is correct for the material being cut (Figure 14).
Inspect the PX-3 for damage.
Inspect the Motor Air Filter for cleanliness.
Verify the Trigger Switch is unlocked.
1
2
34
PX-3 PAVER EXTREME INSPECTION & SET-UP

19
PX-3 PAVER EXTREME OPERATION
CHOP CUTTING
1.
2.
3.
4.
5.
6.
Position the Back Stop for a cross cut or rip cut.
Position the work against the Back Stop.
Depress the Trigger Switch to start. Lower the Cutting Head to begin cutting.
Continue lowering the Cutting Head until the cut is complete.
When cutting is complete, raise the Cutting Head and release the Trigger Switch. ALWAYS allow the Blade
to stop moving before removing work.
Remove work from the cutting area.
CROSS CUTTING
A chop cut is performed by cutting completely through an object in one pass.The following section describes the
correct procedure for performing a chop cut.
1.
2.
Ensure that the Back Stop is in the Forward position for Cross Cutting (Figure 15).
Position the work against the Back Stop and perform the Cut (Figure 16).
Fig. 15 Back Stop in the Forward position Fig. 16 Position work and perform cut

20
RIP CUTTING
1.
2.
3.
4.
5.
Loosen the knob and remove. (Figure 17)
Remove the Back Stop Pivot Bolt with an Allen Wrench (Figure 18).
Loosen the wingnut located underneath the Table (Figure 19).
Position the Back Stop in a backward location and tighten both the knob and wingnut (Figure 20).
Position the work against Back Stop as shown and perform the cut (Figure 21).
Fig. 17 Loosen knob Fig. 18 Remove Pivot Bolt
Fig. 20 Position Back Stop Fig. 21 Position work and perform cut
ANGLE CUTTING
Angle cuts are performed using the chop cut method. For angle cuts, the Adjustable Back Stop is removed and
repositioned.The following section describes the correct procedure for performing an angle cut.
1.
2.
3.
4.
5.
Remove and position the Adjustable Back Stop (Figure 22).
Position the Back Stop for an angle cut (Figure 23).
Position the work below the Cutting Head (Figure 24). Depress the Trigger Switch to start.
Lower the Cutting Head to begin cutting. Continue lowering the Cutting Head until the cut is complete.
Raise the Cutting Head and release the Trigger Switch. ALWAYS allow the Blade to stop moving before
removing work.
Fig. 22 Position Back Stop Fig. 23 Pivot to desired angle Fig. 24 Position work
Fig. 19 Loosen Wingnut
PX-3 PAVER EXTREME OPERATION