MK Diamond Products MK CX-3 Owner's Manual
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MK Diamond Products MK CX-3 Owner's Manual

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

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Summary of Contents for MK Diamond Products MK CX-3

  • Page 1 MK CX-3 GAS POWERED CONCRETE SAW OWNER’S MANUAL & OPERATING INSTRUCTIONS CAUTION: Read all safety and operating instructions before using this equipment Enter the Serial Number of your new saw in the space below. The Serial Number is located on the Rear Crossbar SERIAL NUMBER: NOTE:...

  • Page 2: Table Of Contents

    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.

  • Page 3: Safety

    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.
  • 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.

  • Page 5: California Proposition 65 Message

    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.

  • Page 6: Safety Label Locations

    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.

  • Page 7: Brick Saw Specific Warnings

    SAFETY CX-3 SPECIFIC WARNINGS: Read Owners Manual Wear Protective Gear for – Lungs 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 –...

  • Page 8: Unpacking

    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.

  • Page 9: Transport

    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.

  • Page 10: Assembly

    UNPACKING, TRANSPORT and ASSEMBLY ASSEMBLY: Follow the assembly instructions to prepare your MK CX-3 for operation. 1. Handlebar Assembly: Threaded Handlebar Console Washer Frame Hole Console Threaded Frame Hole Tri-Knob Locate the threaded holes on Align the Handlebar with the Install one Tri-Knob Washer onto both sides of the CX-3 console threaded holes on the sides of the...
  • Page 11 UNPACKING, TRANSPORT and ASSEMBLY 2. Cutting Pointer Arm Installation: Pointer Arm Tighten Pointer Retaining Clip Stop Clip, Screw, Flat Washer and Pointer Wheel Install the Pointer Arm using the Tighten the Nylock Nut and 3/4- Install the Pointer Wheel, the Stop Clip, a 3/4-inch screw, flat inch screw Pointer and the Pointer Retaining...
  • Page 12 UNPACKING, TRANSPORT and ASSEMBLY Retaining Nut Shaft Retaining Nut Wrench Removed Shaft Shaft Wrench Wrench Place the Blade Shaft Wrench Loosen the Blade Retaining Screw Remove the Blade onto the flat section of the Blade while holding the Shaft Wrench Retaining Screw Shaft steady...
  • 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). Oil Drain Turn counter- clockwise to tighten...
  • 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.

  • Page 15: Setup, Startup, Adjustment And Operation

    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. Look for leaks Inspect the MK CX-3 for Inspect Blade for damage – Verify Inspect Engine for leaks general damage and/or loose Blade correct for material being...

  • Page 16: Startup

    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. Rotate Fuel Valve Direction of...

  • Page 17: Adjustment And Operation

    SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN OPERATION: 3. Standard Operation: The following is a brief overview of operating the CX-3. Cooling Rotate Connect clockwise Inlet to raise Blade Cooling Lower Raised Supply Pointer Verify the Blade is clear of the Lower the Pointer Assembly Attach the cooling supply hose to operating surface...
  • Page 18 SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN Cooling Throttle Lever Supply Valve Direction Verify Direction of to Open Flow Movement Open Cooling Supply Valve Verify proper cooling flow and With the engine running adjust adjust the water flow on the blade the throttle approximately half to a desired amount Throttle Lever...
  • Page 19 SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN SHUTDOWN: 4. Normal Engine Shutdown: Rotate Direction of Engine Switch clockwise Movement to raise Direction of Blade Movement Throttle Lever Raised Raise or Verify the Blade is Move the Throttle Lever to the Place Engine Master Switch in the minimum “Slow”...

  • Page 20: Cleanup

    SETUP, STARTUP, ADJUSTMENT, OPERATION and SHUTDOWN Rotate Lower clockwise Pointer to raise Raise Blade Pointer Raised Raise the Blade Raise the Pointer Assembly Rotate the Pointer downward 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.

  • Page 21: Maintenance And Troubleshooting Maintenance

    MAINTENANCE AND TROUBLESHOOTING MAINTENANCE: 1. New Maintenance: Perform the following after initial purchase and operation of the saw. Inspect V-belt Change Oil Change engine oil after 1 month or Check and adjust tension on all V- 20 operating hours (See Engine belts following 1 48 hours of Oil Change)
  • Page 22 MAINTENANCE AND TROUBLESHOOTING Tighten all bolts Throttle Wheel and screws Linkage Assemblies Lubricate the engine Throttle Verify the tightness of all bolts Lubricate the Wheel Assemblies Linkage and screws found on the CX-3 3. Weekly (50 Hours) and Monthly (200 Hours) Maintenance: The following should be performed monthly.
  • Page 23 MAINTENANCE AND TROUBLESHOOTING Spark Plug Clean Shaft Remove Clean Spark Plug Weekly and Remove the Diamond Blade Clean the Blade Shaft Readjust Spark Plug Monthly (See (See Blade Removal /Installation Spark Plug Adjustment and section) Replacement) Clean Lubricate Lubricate Screw Screw Shaft Lubricate the Blade Shaft...
  • Page 24 MAINTENANCE AND TROUBLESHOOTING 4. 500 Hour and 1000 Hour Maintenance: Perform the following maintenance every 500 hours. Spark Plug Have Authorized Repair Shop Have Authorized Repair Shop Replace Spark Plug (See Spark Plug Adjustment and perform remainder of 500-hour perform remainder of 1000-hour maintenance (See Robin Owners maintenance (See Robin Owners Replacement)
  • Page 25 MAINTENANCE AND TROUBLESHOOTING 6. Check Fuel Level: 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.
  • Page 26 MAINTENANCE AND TROUBLESHOOTING Bottom Edge Dipstick Turn clockwise to Fill through Reservoir tighten oil level hole Fill Oil Reservoir Add Oil until level reaches The Install Dipstick bottom edge of fill hole Wipe up excess oil Clean up excess oil MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 26...
  • Page 27 MAINTENANCE AND TROUBLESHOOTING 8. Changing Oil: Oil is a major factor affecting performance and service life. Use 4-stroke automotive detergent oil. SAE 10W-30 is recommended for general use. Other viscosity oil shown in the chart below may be used when the average temperature in your area is within the recommended range. 10W-30 5W-30 -20ºF...
  • Page 28 MAINTENANCE AND TROUBLESHOOTING Wrench Fill through Reservoir Wrench oil level hole Using two 1/2 – inch or adjustable Fill the Oil Reservoir (See wrenches, install the Drain Cap onto Checking Oil Level for the Oil Drain Line (Ensure the Cap filling instructions) is tight) 9.
  • Page 29 MAINTENANCE AND TROUBLESHOOTING Paper Filter Turn counter- clockwise to loosen Tap to Clean or use Cyclone Filter Submerge compressed air Retaining Screw Assembly with Oil Dip the Foam Filter in clean Inspect Paper Filter, tap on hard Remove the 3 Cyclone Filter engine oil –...
  • Page 30 MAINTENANCE AND TROUBLESHOOTING 10. Diamond Blade Change-out: Engine Off Rotate clockwise to raise Raise Retaining Blade Screw Verify the Engine Switch is in the Use the Depth Control Wheel to Remove the Blade Retaining Screw OFF position raise the Blade clear of the floor Diamond Diamond Blade...
  • Page 31 MAINTENANCE AND TROUBLESHOOTING Outer Retaining Nut Flange Wrench Shaft Retaining Flush Against Wrench Blade Screw Blade Install the Outer Flange and verify it Install the Blade Retaining Screw Install the Blade Retaining Screw Wrench and the Blade Shaft Wrench is seated against the Blade and tighten the Retaining Screw 11.
  • Page 32 MAINTENANCE AND TROUBLESHOOTING 12. Spark Plug Adjustments and Replacement: DO NOT work around the engine while hot. NOTE: 1. Recommended spark plugs are: NGK – BPR6ES or DENSO – W20EPR-U 2. When installing the Spark Plug, ensure the threads of the are aligned with the threads in the engine so as not to “cross-thread"...
  • Page 33 MAINTENANCE AND TROUBLESHOOTING 13. Handlebar Repositioning for Storage: Handlebar Tri-Knob Tri-Knob Pivot Turn counter- Turn clockwise clockwise to to tighten loosen Loosen the Tri-Knobs on both Pivot the Handlebar in the forward Tighten the Tri-Knobs on both sides of the Handlebar direction towards the motor sides of the Handlebar 14.
  • Page 34 MAINTENANCE AND TROUBLESHOOTING Blade 7/16” Protection Screw Guard Wrench Turn counter- clockwise to Shaft 5/8” loosen Wrench Wrench Remove the Blade Shaft Cover Remove the Shaft Thread Install the Blade Guard on the Retaining Screws and the Blade Protection Screw using the Shaft opposite side of the CX-3 Shaft Cover Wrench and a 5/8”...
  • Page 35 MAINTENANCE AND TROUBLESHOOTING 14. Micro-V Belt, Adjustment and Replacement: In order to ensure the CX-3 operates at peak efficiency, the power transmission Micro-V belt should be inspected monthly and changed if any signs of damage and/or excessive wear is observed. NOTE: 1.
  • Page 36 MAINTENANCE AND TROUBLESHOOTING Blade Shaft Engine Old Micro-V belt Pulley Pulley New Micro-V belt Remove the old Micro-V belt from Obtain and install a new Clean and verify the alignment of the Engine and Blade Shaft Pulleys the Engine and Blade Shaft Micro-V belt onto the Engine Pulleys Blade Shaft Pulleys...

  • Page 37: Exploded View And Parts List

    EXPLODED VIEW AND PARTS LIST EXPLODED VIEW: MK CX-3 Revision 09/04, Effective Date September 17, 2004 Page 37...

  • Page 38: Parts List

    EXPLODED VIEW AND PARTS LIST PARTS LIST: Item Description MK p/n Assembly, Frame Casting, Frame, Right 159257 Casting, Frame, Left 159259 Support, Horizontal Frame 158857 Connector, Tube ∅1 3/8 x 5/16-18 159206 Screw, 5/16-18 x 1 ½ Hex Hd. Cap 152467 Washer, 5/16 SAE Flat 151754...
  • Page 39 EXPLODED VIEW AND PARTS LIST Assembly, Blade Guard Guard, DC Rear Blade 159262DC Fitting, Brass, 1/8 MNPT X 3/8 BARB 152501 Screw, 3/8 X 2 ½ Socket Head Shoulder, w/ 5/16-18 Thread 160492 Washer, 3/8 SAE Flat 150923 Guard, DC Front Blade 158951DC Screw, 5/16-18 x ¾...
  • Page 40 EXPLODED VIEW AND PARTS LIST Assembly, Depth Control Wheel, Depth Control 155156 Screw, 3/8-16 X 1/2 Socket Head Set 153710 Knob, Ball, 2”, 3/8-16 Insert 158519 Screw, 1/2 X 3/4 Socket Head Shoulder, w/ 3/8-16 X 5/8 Thread 156177 Tube, Depth Control ¾-10 159098 Nut, 3/8-16 Nylock Hex 152505...
  • Page 41 EXPLODED VIEW AND PARTS LIST Nut, 10-24 Clip 155407 Assembly, Throttle Control 155406 Cable, Throttle, CX3 Robin 159495 Assembly, Wire Harness, CX3 Premium Harness, Wire, CX3 Premium 159480 Tachometer (redington) 159477 Screw, 6-32 x 3/8, Pan Head Self Tapping 153466 Switch, Engine On/Off 157851 Assembly, Wire Harness, Standard...

  • Page 42: Theory

    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.

  • Page 43: Accessories

    ACCESSORIES, ORDERING and RETURN INFORMATION ACCESSORIES: ITEM NUMBER DESCRIPTION 159615 MK – CX10 12 x .100 x 1.0 159616 MK – CX10 14 x .100 x 1.0 159617 MK – AX10 12 x .100 x 1.0 159618 MK – AX10 14 x .100 x 1.0 159619 MK –...

  • Page 44: Ordering Information

    ACCESSORIES, ORDERING and RETURN INFORMATION ORDERING INFORMATION: You may order MK Diamond products through your local MK Diamond distributor or, you may order direct from MK Diamond. NOTE: There is a $25.00 minimum order when ordering direct from MK Diamond. All purchases must be made using VISA or MasterCard.

  • Page 45: Operating Instructions

    MK DIAMOND PRODUCTS, INC 1315 STORM PARKWAY, TORRANCE, CA 90509-2803...

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