www.mkdiamond.com Revision 105 03.2012 Manual Part No. 168579 Caution: Read all safety and operating instructions before using this equipment. This owners manual MUST accompany the equipment at all times.
MK-1280 GAS SAW INTRODUCTION We at MK Diamond want to congratulate you on selecting the MK-1280 Gas 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-1280 Gas Saw should provide you with years of quality service. In order to help you, we have included this manual. This owners manual contains information necessary to operate and maintain your MK-1280 Gas Saw safely and correctly.
MK-1280 GAS SAW SAFETY Safety Message/Alert Symbols, Warnings Hazard Symbols General, Maintenance, Saw Safety California Proposition 65 Message Product Specifications Safety Labels Safety Labels & Location PRODUCT SPECIFICATIONS Unpacking Contents Transport SETUP, ADJUSTMENT AND OPERATION Assembly Diamond Blade Installation Oil Reservoir Filling Fuel Tank Pre-start Inspection Startup Operation MAINTENANCE Cleanup Maintenance Troubleshooting Optional Cart Assy, Cart and Handle Assy.
MK-1280 GAS SAW 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 and Parts Manual has been developed to provide complete instructions for the safe and efficient operation of the MK-1280 Saw. Before using this machine, ensure that the person operating the machine has read and understands all instructions in this manual.
MK-1280 GAS SAW SAFETY Potential hazards associated with the MK-1280 Saw operation will be referenced with Hazard Symbols which appear throughout this manual, and will be referenced in conjunction with Safety Message/Alert Symbols. HAZARD SYMBOLS ALWAYS read this Owner’s Manual before operating the machine. ALWAYS avoid inhalation of and skin contact with silica dust and/or mist. ON / OFF ALWAYS place the power ON/OFF switch in the OFF position when the machine is not in use.
MK-1280 GAS SAW SAFETY RULES FOR SAFE OPERATION DANGER Failure to follow instructions in this manual may lead to serious injury or even death! This equipment is to be operated by trained and qualified personnel only! This equipment is for industrial use only. The following safety guidelines should always be used when operating the MK-1280 Saw. • This equipment should not be operated by persons under 18 years of age.
MK-1280 GAS SAW SAFETY 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.
MK-1280 GAS SAW SAFETY 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.
MK-1280 GAS SAW PRODUCT SPECIFICATIONS PRODUCT SPECIFICATIONS Operated and used according to this manual, the MK-1280 Gas Saws will provide years of dependable service. General Description The MK-1280 Gas Saw is engineered as portable brick saw powered by a Honda engine. The saw is capable of cutting masonry up to five and three-fourths (5-3/4) inches (127mm) in height, and thirteen and half (13.5) inches (343mm) in length in a single pass.
MK-1280 GAS SAW SAFETY OPERATION & SAFETY DECALS The MK-1280 Saw is equipped with a number of safety decals provided for operator safety and maintenance information. Should any of these decals become unreadable, replacements can be obtained by calling (800) 262-1575. FOR INFORMATION ON ! 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.
MK-1280 GAS SAW SAFETY SAFETY DECAL LOCATIONS F E D A I C J K B G Fig.
MK-1280 GAS SAW UNPACKING UNPACKING Your MK-1280 Gas Saw has been shipped from the factory thoroughly inspected. Only minimal assembly is required. CAUTION Use proper lifting techniques when lifting the MK-1280 Gas Saw. CONTENTS In your container, you will find one (1) MK-1280 Gas Saw, one (1) MK-1280 Gas Saw movable cutting table, one (1) adjustable cutting guide, one (1) blade wrench, one (1) owners manual, one (1) engine manual and one (1) warranty card. www.mkdiamond.
MK-1280 GAS SAW TRANSPORT TRANSPORT The MK-1280 Gas Saw weighs approximately 200 pounds; two people should be used when transporting the saw. 1. Never transport the MK-1280 Gas Saw with water in the Water Basin. CAUTION 2. The MK-1280 Gas Saw weighs approximately 200 pounds; two people are required when lifting or moving. NOTE: Remove the Movable Cutting Table when transporting the MK-1280 Gas Saw.
MK-1280 GAS SAW ASSEMBLY Movable Cutting Table Installation Fig. A While holding the front, position movable Cutting Table roller wheels above Guide Rails Fig. B Seat movable Cutting Table roller wheels on saw Guide Rails Fig. C Verify movable Cutting Table is seated correctly by moving table back and forth Adjustable Cutting Guide Installation NOTE: The adjustable Cutting Guide can be used on either side of the Diamond Blade. Fig.
MK-1280 GAS SAW 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 blade shaft so as not to “cross-thread” the bolt. Fig. A Loosen Blade Guard Bolts Fig. B Remove the Blade Guard. Remove retaining screw, (lefthand thread) and Outer Flange Fig. C Install Diamond Blade onto Blade Shaft Fig. D Install retaining screw and outer flange Fig. E Tighten retaining screw and Outer Flange.
MK-1280 GAS SAW FILLING OIL RESERVOIR FILLING OIL RESERVOIR NOTE: Refer to the Engine Manual for your specific engine. Fig. A Remove Dipstick NOTE: Fig. B Fill Oil Reservoir When installing the Oil Dipstick, ensure the threads are aligned with the threads of the Oil Reservoir so as not to “cross-thread” the dipstick. Bottom Edge Fig. C Add Oil until level reaches the bottom edge of fill hole Fig. D Install Dipstick 16 Fig.
MK-1280 GAS SAW FILLING FUEL TANK FILLING FUEL TANK WARNING 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. NOTE: 1. Fuel can damage paint and plastic. Be careful not to spill fuel when filling the fuel tank.
MK-1280 GAS SAW INSPECTION PRE-START INSPECTION The pre-start inspection should be performed before beginning any job. CAUTION If the Diamond Blade shows signs of fatigue cracking, replace the blade before starting work. Fig. A Inspect Blade for damage – Verify Blade correct for material being cut Fig. B Inspect Wooden Strip for excessive grooves Fig. C Verify Movable Cutting Table moves freely Proper Oil Level Low Level Fig. D Inspect Engine for leaks Fig.
MK-1280 GAS SAW WET CUTTING Fig. A Attach Hose Fig. B Open Cooling flow control valve to adjust flow DRY CUTTING Fig.
MK-1280 GAS SAW STARTUP Refer to Engine Manual for your specific saw 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. NOTES: If restarting a warm engine leave the Choke Lever in the OPEN position. Fig. A Place Fuel Valve in the ON position Fig. B Place Choke Lever in the CLOSED position Fig. C Move the Throttle Lever to 1/3 Open Fig.
MK-1280 GAS SAW OPERATION CUTTING CAUTION DO NOT FORCE TOOL, it will do the job better and safer at the rate for which it was designed. NOTE: Skip step C, if cutting dry. Fig. A Set the Adjustable Cutting Guide Fig. B Position the masonry piece Fig. D Start saw. Move the Throttle Lever to start saw adjust blade speed (faster blade speed for smoother cuts) Refer to your specific engine manual Fig. E Setup to Cut Fig. G Move the Throttle Lever to lower blade speed.
MK-1280 GAS SAW CLEANUP Normal Engine Shutdown NOTE: Refer to engine manual for your specific engine. Fig. A Move the Throttle Lever to lower blade speed Fig. B Place Engine Switch in the OFF position Fig. C Place Fuel Valve in the OFF position Emergency engine SHUTDOWN NOTE: Refer to engine manual for your specific engine. Fig. A Place Engine Switch in the OFF position CLEANUP CAUTION Fig.
MK-1280 GAS SAW Fig. D Clean Air Filter. Refer to Engine Manual MAINTENANCE Fig. E Clean engine throttle linkage with a dry cloth. Refer to Engine Manual INITIAL MAINTENANCE Perform the following after initial purchase and operation of the MK-1280 Gas Saw. Fig. A Change engine oil after first month or first 20 operating hours. Refer to Engine Manual Fig. B Check and adjust V-belt tension following first 48 hours of operation.
MK-1280 GAS SAW MAINTENANCE Monthly MAINTENANCE The following should be performed monthly. Items should be lubricated as directed. Fig. A Remove and clean Diamond Blade Outer Flange and Retaining Bolt Fig. B Verify all engine mounting bolts are tight Fig. C Check Movable Cutting Table Roller Wheels for wear Fig. D Clean engine air filter. Refer to Engine Manual Six (6) Month MAINTENANCE Perform the following maintenance every six months. Fig. A Change engine oil.
MK-1280 GAS SAW MAINTENANCE yearly MAINTENANCE Perform the following maintenance every year. Refer to Engine Manual 1. Replace engine Air Filter. Refer to Engine Manual 2. Replace Spark Plug. Refer to Engine Manual 3. Check/Adjust Idle Speed Check/adjust Valve Clearance. Refer to Engine Manual 4. Inspect Micro-V Belts. two-yearly MAINTENANCE 1. Check Fuel Line. Refer to Engine Manual Blade Dressing Like most cutting instruments, a diamond blade performs best when it is dressed.
MK-1280 GAS SAW MAINTENANCE Movable cutting table wheel change out NOTE: All four (4) Movable Cutting Table, Roller Wheels should be replaced at the same time (MK Diamond Part No. – 133090) Fig. A Place Movable Cutting Table on work bench with Roller Wheels up Fig. B Remove Roller Wheels Fig. C Clean holes for Installation of new Roller Wheels Fig. D Install Wheel/Washer Assembly into Movable Cutting Table Fig. E Remove Roller Wheels Retaining Nut - tighten Fig.
MK-1280 GAS SAW MAINTENANCE Protective wooden strip replacement The protective wooden strip is to protect the Movable Cutting Table from damage during operation. Over time, the wooden strip will become grooved from use. A grooved wooden strip will not support masonry during cutting causing the blade to “break through” the piece instead of performing a smooth cut (MK Diamond Part No. – 158283). Fig. A Place Movable Cutting Table on work bench with Roller Wheels up Fig.
MK-1280 GAS SAW MAINTENANCE Micro-V belt inspection, adjustment and replacement NOTE: When a new belt is installed, it should be inspected and re-tensioned after the first forty-eight (48) hours of operation. Micro-V belt Fig. A Remove Outer Belt Guard Fig. B Check Belt tension Fig. C To change tension loosen all four engine mount bolts Fig. D Tighten or loosen belt tension as required Fig. E Tighten Engine mount bolts Fig.
MK-1280 GAS SAW WARNING TROUBLESHOOTING Turn the ON/OFF switch to the OFF position and place the Fuel Valve in the CLOSED position before performing the following. BLADE WILL NOT CUT PROPERLY Fig. A Check for Smoothness or “Glazing” Fig. B Check for Proper Rotation Fig. D Verify blade is correct for material being used MOVABLE CUTTING TABLE DOES NOT MOVE CORRECTLY Fig. A Check that the Guide Rails are clean. Clean if dirty Fig.
MK-1280 GAS SAW TROUBLESHOOTING BLADE STOPS TURNING Fig. A Verify the engine is running. If not, restart (See Setup, Startup, Adjustment, Operation and Shudown) Fig. B Check Micro-V Belt (See Micro-V Belt Inspection, Adjustment and Replacement) Engine STOPS Refer to Engine Manual NOTES: The Honda Engine is equipped with an oil level sensor that will stop the engine on a low oil level Fill Throat Low level Upper Limit Fig.
MK-1280 GAS SAW CART ASSEMBLY CART ASSEMBLY (OPTIONAL ACCESSORY) Rear Front Fig. A Place cart upside down on a flat surface Fig. B Place one flat washer on each of the 16 bolts Fig. D Place stationary casters on rear bolts with brake facing out. Place one flat washer, one lock washer and a nut on each bolt. Tighten each nut to secure caster. Turn cart upright HANDLE ASSEMBLY Fig. A Place handle in the middle of tow bracket. Slide one washer on to bolt and slide through hole Fig.
MK-1280 GAS SAW CART ASSEMBLY LOCK ASSEMBLY Fig. A Place one nut on each hook bolt. Thread nut 2/3 up the hook bolt Fig. B Place hook bolt through rear hole of tow bracket Fig. D Place Nylok nut on bottom of hook bolt and tighten. Repeat procedure for rear lock Fig. E Place saw on cart. Place hook bolt over saw handle. Tighten knob SETTING BRAKE Fig. A To set brake press “on” the lever on back casters 32 Fig.
MK-1280 GAS SAW NOTES: CART ASSEMBLY The wheels and casters each have a zerk fitting that needs to be lubricated every 6 months or as needed.
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MK-1280 gas Saw FIGURE 1 - MK-1280 SAW - P/N 166561 36 Exploded view
MK-1280 gas Saw Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Description NUT, 3/8 16 HEX NUT, HEX, 5/16 - 18 HOSE, WATER VINYL 3/8 X 1/2, 30’ WASHER, 3/8 SAE FLAT WASHER, 3/8 SPLIT LOCK FITTING, 1/2 MNPT X 3/4 FNH WASHER, LOCK, SPLIT, 5/16 WASHER, FLAT, SAE, 5/16 WASHER, 1/4 SAE, FLAT SCREW, 3/8 - 16 X 3-3/4 HEX HD CAP SCREW, HEX HD CAP, 3//8 -16 X 1 NUT, LOCK STEEL 1/2” NPT NUT, 3/8 -16 HEX CENTERLOCK SCREW, HEX, 3/8 -16 X 3/4 FITTING,
MK-1280 gas Saw FIGURE 2 - MK-1280 PAVER SAW - P/N 166561 38 Exploded view
MK-1280 gas Saw Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 Description NUT, 3/8 16 HEX NUT, HEX, 5/16 - 18 HOSE, WATER VINYL 3/8 X 1/2, 30’ WASHER, 3/8 SAE FLAT WASHER, 3/8 SPLIT LOCK FITTING, 1/2 MNPT X 3/4 FNH WASHER, LOCK, SPLIT, 5/16 WASHER, FLAT, SAE, 5/16 WASHER, 1/4 SAE, FLAT SCREW, 3/8 - 16 X 3-3/4 HEX HD CAP SCREW, HEX HD CAP, 3//8 -16 X 1 NUT, LOCK STEEL 1/2” NPT NUT, 3/8 -16 HEX CENTERLOCK SCREW, HEX, 3/8 -16 X 3/4 FITTING,
MK-1280 gas Saw PARTS LIST FIGURE 3 - ASSY, TABLE - P/N 166577 Item 1 2 3 4 5 6 7 8 Description WHEEL, CONVEYOR CART SCREW, HEX HD, 1/4 - 20 X 3/4 NUT, HEX W/WSHR, 1/4 - 20 NUT, HEX, TW, 5/16 - 18 WOOD STRIP, TABLE INSERT SCREW, DRYWL, FLAT HD, #6X1 CASTING, TABLE, MK-1280 BACKSTOP, TABLE 40 Part# 133090 152370 153941 153942 158283 159906 165398 166584 Qty 4 4 4 4 1 2 1 1
MK-1280 gas Saw parts list FIGURE 4 - ASSY, ENGINE, HONDA - P/N 166578 Item 1 2 3 4 5 6 7 8 9 10 11 12 Description NUT, 3/8 - 16 HEX KEY, SQUARE, 1/4 X 1-3/4 SCREW, 3/8 - 16 X 1-3/4 HEX HEAD CAP WASHER, 3/8 SAE FLAT WASHER, 3/8 SPLIT LOCK SCREW, #6 - 32 X 3/8 SOCKET HEAD SET ENGINE, HONDA GX270 DEFLECTOR, 5 - 1/2HP HONDA SCREW, 5/16 - 18 X 3/8 SOCKET HEAD SET ASSY, OIL DRAIN, 10MM PULLEY, 16J25 X 1.
MK-1280 gas Saw PARTS LIST FIGURE 5 - ASSY, ARBOR - P/N 166579 Item 1 2 3 4 5 6 7 8 9 Description KEY, 3/16 SQ X 1 - 1/8 BEARING, ARBOR HOUSING CASTING, 2000/5000 ARBPR - COMP SCREW, 5/16 - 18 X 3/8 SOCKET HEAD SET PULLEY, 16J28 X .
MK-1280 gas Saw PARTS LIST FIGURE 6 - ASSY, 16” BLADE GUARD - P/N 166581 Item 1 2 3 4 5 Description ELBOW, 1/4 MNPT STREET FITTING, 1/4 MNPT X 3/8 BARB SCREW, HEX HEAD 3/8 - 16 X 1 - 1/2 LG.
MK-1280 gas Saw PARTS LIST FIGURE 7 - ASSY, CART - P/N 166581 Item 1 2 3 4 5 6 7 8 9 10 11 12 Description NUT, 3/8 - 16 HEX WASHER, FLAT, USS, 3/8 WASHER, 3/8 SPLIT LOCK NUT, 3/8 - 16 NYLOK HEX SCREW, 3/8 - 16 X 2-1/4 HEX HEAD KNOB, ADJ MK1408 5-PRONG -RAW GRIP, HANDLE 7/8 ID CASTER, 10” RIGID CASTER, 10’ SWIVEL HANDLE, CART BOLT, HOOK, 38 - 16 X 5 FRAME, CART 44 Part# 101188 101360 150925 152505 153529 155239 158608 167772 167773 167774 167775 167776 Qty 18 36 16 3 1 2 1 2 2 1 2 1
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MK-1280 GAS SAW ORDERING & RETURN INSTRUCTIONS 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: There is a $25.
MK-1280 GAS SAW 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: Customer_Service@MKDiamond.com 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.
MK-1280 gas Saw Series OWNERS MANUAL & PART LIST MK Diamond Products, Inc. 1315 Storm Parkway Torrance, CA 90501 Toll-Free: (800) 845-5830 Phone: (310) 539-5221 Fax: (310) 539-5158 www.mkdiamond.
