Operator’s manual K 760 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
KEY TO SYMBOLS Symbols on the machine You will find the following labels on your power cutter: WARNING! The machine can be a dangerous tool if used incorrectly or carelessly, which can cause serious or fatal injury to the operator or others. Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Wear personal protective equipment. See instructions under the heading ”Personal protective equipment”.
CONTENTS Contents KEY TO SYMBOLS Symbols on the machine ............................................. Explanation of warning levels ...................................... CONTENTS Contents ...................................................................... PRESENTATION Dear customer! ............................................................ Features ....................................................................... PRESENTATION What is what on the power cutter - K 760? ..................
PRESENTATION Dear customer! Features Thank you for choosing a Husqvarna product! Values such as high performance, reliability, innovative technology, advanced technical solutions and environmental considerations distinguish Husqvarna's products. It is our wish that you will be satisfied with your product and that it will be your companion for a long time. A purchase of one of our products gives you access to professional help with repairs and services.
PRESENTATION What is what on the power cutter - K 760? 1 Front handle 16 Blade guard 2 Water tap 17 Decompression valve 3 Warning decal 18 Air purge 4 Air filter cover 19 Fuel cap 5 Cylinder cover 20 Water connection with filter 6 Choke 21 Belt guard 7 Throttle lockout 22 Cutting arm 8 Throttle control 23 Type plate 9 Start throttle lock 24 Belt tensioner 10 Stop switch 25 Cutting head 11 Disconnection function for OilGuard (K760 OilGuard) 26 Cutting blade 12 Starter handle
MACHINE´S SAFETY EQUIPMENT General ! • WARNING! Never use a machine that has faulty safety equipment! If your machine fails any of these checks contact your service agent to get it repaired. Start the power cutter and apply full throttle. Release the throttle control and check that the cutting blade stops and remains stationary. If the cutting blade rotates when the throttle is in the idle position you should check the carburettor’s idle adjustment. See instructions in the section "Maintenance".
MACHINE´S SAFETY EQUIPMENT Vibration damping system ! WARNING! Overexposure to vibration can lead to circulatory damage or nerve damage in people who have impaired circulation. Contact your doctor if you experience symptoms of overexposure to vibration. Such symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin colour or condition. These symptoms normally appear in the fingers, hands or wrists. These symptoms may be increased in cold temperatures.
CUTTING BLADES General ! • Hand-held, high-speed machines ! WARNING! A cutting blade may burst and cause injury to the operator. Cutting blades are available in two basic designs; abrasive baldes and diamond blades. • High-quality blades are often most economical. Lower quality blades often have inferior cutting capacity and a shorter service life, which results in a higher cost in relation to the quantity of material that is cut.
CUTTING BLADES Abrasive blades for different materials Blade type Material Concrete blade Concrete, asphalt, stone masonry, cast iron, aluminium, copper, brass, cables, rubber, plastic, etc. Metal blade Steel, steel alloys and other hard metals. Diamond blades for dry cutting • Diamond blades for dry cutting can be used both with and without water cooling. • When dry cutting, lift the blade out from the cut every 30– 60 seconds and let it rotate in the air for 10 seconds to let it cool.
ASSEMBLING AND ADJUSTMENTS General ! WARNING! The engine should be switched off, and the stop switch in STOP position. Checking the direction of the blade rotation • Husqvarna’s blades are approved for hand-held power cutters. When using diamond blades make sure that it rotates in the direction indicated by the arrow on the blade. The direction of rotation for the machine is shown by arrows on the cutting arm.
ASSEMBLING AND ADJUSTMENTS Disengaging OilGuard (K760 OilGuard) • • Now unscrew the bolts and dismantle the belt guard. • Disconnect the water hose from the blade guard. • Remove the belt from the belt pulley. • The cutting head is now loose and can be removed from the machine. • Remove the cutting head and attach it to the other side of the cutting arm. • Fit the belt guard to the reversed cutting head. • Tighten the drive belt. See instructions in the section "Maintenance".
FUEL HANDLING General Two-stroke oil K760 ! WARNING! Running an engine in a confined or badly ventilated area can result in death due to asphyxiation or carbon monoxide poisoning. Use fans to ensure proper air circulation when working in trenches or ditches deeper than one meter (3 foot). Fuel and fuel fumes are highly inflammable and can cause serious injury when inhaled or allowed to come in contact with the skin.
FUEL HANDLING Fueling ! WARNING! Always stop the engine and let it cool for a few minutes before refuelling. The engine should be switched off, and the stop switch in STOP position. When refuelling, open the fuel cap slowly so that any excess pressure is released gently. Clean the area around the fuel cap. Tighten the fuel cap carefully after refuelling. Negligence may lead to the start of a fire. Move the machine at least 10 ft (3 m) from the refuelling point before starting it.
OPERATING Protective equipment • General Always use common sense • It is not possible to cover every conceivable situation you can face. Always exercise care and use your common sense. If you get into a situation where you feel unsafe, stop and seek expert advice. Contact your dealer, service agent or an experienced user. Do not attempt any task that you feel unsure of! Do not use the machine unless you are able to call for help in the event of an accident.
OPERATING Work area safety ! WARNING! The safety distance for the power cutter is 15 metres (50 foot). You are responsible to ensure that animals and onlookers are not within the working area. Do not start cutting until the working area is clear and you are standing firmly. • Maintain a safe distance from the cutting blade when the engine is running. • Never leave the machine unsupervised with the motor running. • Never move the machine when the cutting equipment is rotating.
OPERATING • Feed down the machine in line with the blade. Pressure from the side can damage the blade and is very dangerous. kickback can also be very violent and throw the power cutter up and back towards the user in a rotating motion causing serious or even fatal injury. • Move the blade slowly forwards and backwards to achieve a small contact area between the blade and the material to be cut. This reduces the temperature of the blade and ensures effective cutting.
OPERATING Pinching kickback Pinching is when the cut closes and pinches the blade. If the blade is pinched or stalled the reactive force will be strong and you might not be able to control the power cutter. If the blade is pinched or stalled in the kickback zone, the reactive force will push the power cutter up and back towards the user in a rotating motion causing serious or even fatal injury. Pipe cutting and pinching Special care should be taken whet cutting in pipes.
STARTING AND STOPPING Before starting ! • WARNING! Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Air purge: Press the air purge diaphragm repeatedly until fuel fills the diaphragm (at least 6 times). The diaphragm need not be completely filled. Wear personal protective equipment. See instructions under the heading ”Personal protective equipment”.
STARTING AND STOPPING Stopping ! • CAUTION! The cutting blade continues to rotate up to a minute after the motor has stopped. (Blade coasting.) Make sure that the cutting blade can rotate freely until it is completely stopped. Carelessness can result in serious personal injury. Stop the engine by moving the stop switch (STOP) to the right.
MAINTENANCE General ! WARNING! The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorized service workshop. The engine should be switched off, and the stop switch in STOP position. Wear personal protective equipment. See instructions under the heading ”Personal protective equipment”.
MAINTENANCE Cleaning Functional inspection External cleaning General inspection • • Clean the machine daily by rinsing it with clean water after the work is finished. Cooling air intake • Clean the cooling air intake when needed. Drive belt Check the tension of the drive belt • NOTICE! A dirty or blocked air intake results in the machine overheating which causes damage to the piston and cylinder. Spark plug Check that nuts and screws are tight.
MAINTENANCE Replacing the drive belt ! • Adjusting the idle speed WARNING! Never start the engine when the belt pulley and clutch are removed for maintenance. Do not start the machine without the cutting arm or cutting head fitted. Otherwise the clutch could come loose and cause personal injuries. First release the two bolts and then the adjuster screw to release the belt tension.
MAINTENANCE • Remove any remnants of the old starter cord and check that the return spring works. Insert the new starter cord through the hole in the starter housing and in the cord pulley. • Loosen the bolts holding the spring cassette. • Secure the starter cord around the cord pulley as illustrated. Tighten the fastening well and ensure that the free end is as short as possible. Secure the end of the starter cord in the starter handle.
MAINTENANCE Air filter The air filter only needs to be checked if the engine drops in power. • Loosen the screws. Remove the air filter cover. • Check the air filter and replace if necessary. Replacing the air filter NOTICE! The air filter must not be cleaned or blown clean with compressed air. This will damage the filter. • Loosen the screws. Remove the cover. • Replace the air filter. Drive gear, clutch • Check the clutch centre, drive gear and clutch spring for wear.
TECHNICAL DATA Technical data Motor Cylinder displacement, K760 cm3/in3 Cylinder bore, mm/inch 74/4,5 51/2 Stroke, mm/inch 36/1,4 Idle speed, rpm 2700 Max.
FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS should contact your nearest authorized servicing dealer or call Husqvarna Construction Products, at 1-800-288-5040 or www.us.husqvarna.com . The EPA (The US Environmental Protection Agency), Environment Canada and Husqvarna Construction Products are pleased to explain the emissions control system warranty on your 2009 and later small nonroad engine. In U.S.
! WARNING! Cutting, especially when DRY cutting, generates dust that comes from the material being cut, which frequently contains silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Exposure to excessive amount of such dust can cause: Respiratory disease (affecting your ability to breath), including chronic bronchitis, silicosis and pulmonary fibrosis from exposure to silica. These diseases may be fatal; Skin irritation and rash.
