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Husqvarna K 770 Operator's Manual

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Operator's manual
K 770, K 770 Rescue,
K 770 OilGuard
Please read the operator's manual carefully and make sure you understand the instructions
before using the machine.
E E E E n n n n g g g g l l l l i i i i s s s s h h h h

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  Summary of Contents for Husqvarna K 770

  • Page 1 Operator’s manual K 770, K 770 Rescue, K 770 OilGuard Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. E E E E n n n n g g g g l l l l i i i i s s s s h h h h...
  • Page 2: Key To Symbols

    / n YYYY WWXXXXX rapid and violent and can cause life XXX XX XX-XX Row 2: Serial No. with Husqvarna AB threatening injuries. Read and understand Huskvarna, SWEDEN manufacturing date (Y, W, X): the instructions in the manual before using...
  • Page 3: Explanation Of Warning Levels

    KEY TO SYMBOLS Explanation of warning levels The warnings are graded in three levels. WARNING! WARNING! Indicates a hazardous situation which, if not avoided, will result in death or serious injury. CAUTION! CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
  • Page 4: Table Of Contents

    Design and features ..........5 Recommended abrasive and diamond cutting PRESENTATION blade, specification ..........33 What is what on the power cutter - K 770, K 770 EC Declaration of Conformity ....... 34 OilGuard? ............. 7 PRESENTATION What is what on the power cutter - K 770 Rescue? 8 MACHINE´S SAFETY EQUIPMENT...
  • Page 5: Presentation

    An optical detection system to detect if there is oil in the fuel or if the oil type is wrong. Husqvarna AB is a Swedish company based on a tradition that dates back to 1689, when the Swedish King Karl XI SmartCarb™...
  • Page 6: Presentation

    It is also very easy to change the drive belt and reverse the cutting head. Specially designed starter handle (K 770 Rescue) Specially designed starter handle, with room for heavy gloves.
  • Page 7: What Is What On The Power Cutter - K 770, K 770 Oilguard

    PRESENTATION What is what on the power cutter - K 770, K 770 OilGuard? Front handle 17 Adjustment handle for guard Water valve 18 Blade guard Warning decal 19 Decompression valve Air filter cover 20 Air purge Starting instruction decal...
  • Page 8: What Is What On The Power Cutter - K 770 Rescue

    PRESENTATION What is what on the power cutter - K 770 Rescue? Front handle 15 Blade guard Warning decal 16 Adjustment handle for guard Air filter cover 17 Decompression valve Starting instruction decal 18 Air purge Cylinder cover 19 Fuel cap...
  • Page 9: Machine´s Safety Equipment

    MACHINE´S SAFETY EQUIPMENT General • Check that the throttle trigger and throttle lockout move freely and that the return springs work properly. WARNING! Never use a machine that has faulty safety equipment! If your machine fails any checks contact your service agent to get it repaired.
  • Page 10 MACHINE´S SAFETY EQUIPMENT Blade guard Checking the vibration damping system WARNING! The engine should be WARNING! Always check that the guard switched off, and the stop switch in is correctly fitted before starting the STOP position. machine. • Check the vibration damping units regularly for cracks This guard is fitted above the cutting blade and is or deformation.
  • Page 11: Cutting Blades

    Fitting the cutting blade. on this saw. Suitable cutting blades • Husqvarna cutting blades are manufactured for high- speed, portable power cutters. Cutting blades K 770 K 770 Rescue •...
  • Page 12: Abrasive Blades

    CUTTING BLADES Blade vibration Diamond blades • The blade can become out-of-round and vibrate if an General excessive feed pressure is used. • A lower feed pressure can stop the vibration. WARNING! Never use a diamond blade to Otherwise replace the blade. cut plastic material.
  • Page 13: Toothed Blades, Carbide Tipped Blades And Emergency Situations

    Do not store or transport the power cutter with the cutting blade fitted. All blades should be removed from Some Husqvarna blades are available with side clearance the cutter after use and stored carefully. wear indicators to help determine a blade’s end of life.
  • Page 14: Assembling And Adjustments

    STOP position. The direction of rotation for the machine is shown by arrows on the cutting arm. Husqvarna’s blades are high speed blades approved for hand held power cutters. Checking the spindle shaft and flange washers When the blade is replaced with a new one, check the flange washers and the spindle shaft.
  • Page 15: Disengaging Oilguard

    (B) are fitted in the tank. • If you are in a situation where you do not have access to Husqvarna OilGuard oil, but you have oil of a similar • Remove the upper belt guard.
  • Page 16: Wheel Kit

    ASSEMBLING AND ADJUSTMENTS • Attach the cutting head to the other side of the cutting Cutting trolley (Accessory) arm. A cutting trolley makes it easier to cut in floors and roads, especially long cuts at a fixed depth. Quick connections makes it easy to install the cutter on the trolley.
  • Page 17: Fuel Handling

    FUEL HANDLING General Two-stroke oil • For best results and performance use HUSQVARNA WARNING! Running an engine in a two-stroke engine oil, which is specially formulated for confined or badly ventilated area can our air-cooled two-stroke engines. result in death due to asphyxiation or •...
  • Page 18: Fueling

    If the correct engine should be switched off, and the amount of Husqvarna OilGuard oil has been used, the stop switch in STOP position. machine will run at a normal speed. If the wrong type...
  • Page 19: Operating

    Tight-fitting, heavy-duty and comfortable clothing that coordination or judgement. permits full freedom of movement. Cutting generates sparks that can ignite clothing. Husqvarna recommends that you wear flame-retardant cotton or heavy denim. Do not wear clothing made of material such as nylon, polyester or rayon. If ignited such material can melt and cling to the skin.
  • Page 20 OPERATING • Ensure that the working area is sufficiently illuminated WARNING! Unauthorized modifications to create a safe working environment. and/or accessories may lead to serious • Make sure that no pipes or electrical cables are routed injury or death to the user or others. in the working area or in the material to be cut.
  • Page 21 OPERATING • Never cut asbestos materials! • Never cut from a ladder. Use a platform or scaffold if the cut is above shoulder height. Do not overreach • Hold the saw with both hands; keep a firm grip with thumbs and fingers encircling the handles. The right hand should be on the rear handle and the left hand on the front handle.
  • Page 22 OPERATING Cutting with toothed/carbide tipped Thin material blades during rescue operations Cutting thin and hard material (i.e. a sheet metal covered roof) should be conducted in a forward direction for best control. WARNING! A power cutter should never be used with carbide tipped blade for non-emergency work, such as in the construction trades.
  • Page 23 OPERATING Kickback kickback zone. Use the lower quadrant of the blade to avoid climbing kickback. WARNING! Kickbacks are sudden and can be very violent. The power cutter can be thrown up and back towards the user in a rotating motion causing serious or even fatal injury.
  • Page 24: Transport And Storage

    OPERATING end of the pipe will move downward, the cut will open and no pinching will occur. Proper sequence cutting a pipe First cut section I. Move to side II and cut from section I to bottom of the pipe. Move to side III and cut the remaining part of the pipe ending at the bottom.
  • Page 25: Starting And Stopping

    STARTING AND STOPPING Before starting automatically returns to its initial position when the machine starts. WARNING! Note the following before starting: Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Wear personal protective equipment. See under heading ”Personal protective equipment”.
  • Page 26: Stopping

    STARTING AND STOPPING With a warm engine: • When the machine starts, press the throttle trigger to disengage the start throttle, and the machine will idle. • Make sure that the stop switch (STOP) is in the left position. NOTICE! Pull with your right hand out the starter cord slowly until you feel a resistance (as the starter pawls engage) and then pull firmly and rapidly.
  • Page 27: Maintenance

    If you need further information please contact your nearest service workshop. • Let your Husqvarna dealer regularly check the machine and make essential adjustments and repairs. Maintenance schedule In the maintenance schedule you can see which parts of your machine that require maintenance, and with which intervals it should take place.
  • Page 28: Cleaning

    This is quite normal. External cleaning Please contact an accredited Husqvarna workshop if you • Clean the machine daily by rinsing it with clean water have any questions.
  • Page 29 MAINTENANCE • Remove the upper belt guard. Adjusting the idle speed • Now remove the rear belt guard. CAUTION! Contact your dealer/service workshop, if the idle setting cannot be adjusted so that the blades are stationary. Do not use the machine until it has been properly adjusted or repaired.
  • Page 30 MAINTENANCE • Pull the cord out about 30 cm and lift it into the cut-out Changing a broken recoil spring in the periphery of the starter pulley. When the cord is • Undo the bolt in the centre of the pulley and remove intact: Release the spring tension by letting the pulley the pulley.
  • Page 31: Disposal, Scrapping

    MAINTENANCE Fuel system Drive gear, clutch • Check the clutch centre, drive gear and clutch spring General for wear. • Check that the fuel cap and its seal are not damaged. Water delivery system • Check the fuel hose. Replace when damaged. Check the nozzles on the bladeguard and the filter in the Fuel filter water connection for clogging and clean as necessary.
  • Page 32: Troubleshooting

    TROUBLESHOOTING Troubleshooting schedule WARNING! If service operations or troubleshooting does not require the machine to be on, the engine should be switched off, and the stop switch in STOP position. Problem Probable cause Potential Solution See instructions under the heading Starting and Incorrect starting procedure.
  • Page 33: Technical Data

    TECHNICAL DATA Technical data K 770, K 770 OilGuard, K 770 Rescue Cylinder displacement, cm /cu.in 74/4.5 Cylinder bore, mm/inch 51/2 Stroke, mm/inch 36/1.4 Idle speed, rpm 2700 Wide open throttle - no load, rpm 9300 (+/- 150) Power, kW/hp @ rpm 3.7/5 @ 9000...
  • Page 34: Ec Declaration Of Conformity

    Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel +46-36-146500, declares under sole responsibility that the portable cut-off machines Husqvarna K 770, K 770 OilGuard, K 770 Rescue from 2018’s serial numbers and onwards (the year is clearly stated in plain text on the rating plate with subsequent serial number), complies with the requirements of the COUNCIL’S DIRECTIVES:...
  • Page 35 TECHNICAL DATA – English...
  • Page 36 GB - Original instructions 1158925-26, rev 2 ´®z+Z|T¶6B¨ ´®z+Z|T¶6B¨ 2018-10-18...

This manual is also suitable for:

K 770 oilguardK 770 rescue