Operator’s manual K 970 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: 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 970? ..................
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 970? 1 Front handle 14 Muffler 2 Water tap 15 Adjustment handle for guard 3 Warning decal 16 Guard for the blade 4 Air filter cover 17 Fuel tank 5 Cylinder cover 18 Water connection with filter 6 Choke 19 Belt guard 7 Throttle lockout 20 Type plate 8 Throttle control 21 Cutting arm 9 Air purge 22 Belt tensioner 10 Stop switch 23 Cutting head 11 Starter handle 24 Cutting blade 12 Starter 25 Combination spanner 13 Decompressio
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. ! WARNING! Do not use abrasive blades with water. The strength is impaired when abrasive blades are exposed to water or moisture, which results in an increased risk of the blade breaking.
ASSEMBLING AND ADJUSTMENTS General ! • Lock the shaft. • Tightening torque for the bolt holding the blade is: 15-25 Nm (130-215 in.lb). WARNING! The engine should be switched off, and the stop switch in STOP position. Checking the drive shaft and flange washers When the blade is replaced with a new one, check the flange washers and the drive shaft. • Check that the threads on the drive shaft are undamaged.
FUEL HANDLING General ! 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. For this reason observe caution when handling fuel and make sure there is adequate ventilation.
OPERATING Protective equipment General • • Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. • Keep in mind that it is you, the operator that is responsible for not exposing people or their property to accidents or hazards. • The machine must be kept clean. Signs and stickers must be fully legible. Do not use the machine unless you are able to call for help in the event of an accident.
OPERATING ! WARNING! This machine produces an electromagnetic field during operation. This field may under some circumstances interfere with active or passive medical implants. To reduce the risk of serious or fatal injury, we recommend persons with medical implants to consult their physician and the medical implant manufacturer before operating this machine. • Maintain a safe distance from the cutting blade when the engine is 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 zone Never use the kickback zone of the blade for cutting. 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.
OPERATING How to aviod kickback Avoiding kickback is simple. • The work piece must always be supported so that the cut stays open when cutting through. When the cut opens there is no kickback. If the cut closes and pinches the blade ther is always a risk of kickback. • Take care when inserting the blade in an existing cut. • Be alert to movement of the work piece or anything else that can occur, which could cause the cut to close and pinch the blade.
STARTING AND STOPPING Before starting ! • Start throttle position - warm engine: The correct choke/start throttle setting is obtained by pulling the choke control to the choke position and then pushing it in again. This only engages the start throttle setting without any choke. • Air purge: Press the air purge diaphragm repeatedly until fuel fills the diaphragm (at least 6 times). The diaphragm need not be completely filled.
STARTING AND STOPPING • With a cold engine: The machine stops when the engine fires becase the chokel control is pulled out. Press the choke control and the decompression valve. Pull the starter handle until the engine starts. • When the engine starts, quickly apply full throttle to automatically disengage fast idle. Stopping ! • CAUTION! The cutting blade continues to rotate up to a minute after the motor has stopped. (Blade coasting.
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 ! • 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. Carburetor The carburettor is equipped with fixed needles to ensure the machine always receives the correct mixture of fuel and air.
MAINTENANCE Starter ! Tensioning the recoil spring • Guide the cord through the cut-out in the periphery of the pulley and wind the cord 3 times clockwise around the centre of the starter pulley. • Now pull the starter handle and in doing so tension the spring. Repeat the procedure once more, but this time with four turns. • Note that the starter handle is drawn to its correct home position after tensioning the spring.
MAINTENANCE Fitting the starter Air filter • The air filter only needs to be checked if the engine drops in power. • To fit the starter, first pull out the starter cord and place the starter in position against the crankcase. Then slowly release the starter cord so that the pulley engages with the pawls. Tighten the screws. Fuel system • Loosen the screws. Remove the air filter cover. • Check the air filter and replace if necessary.
TECHNICAL DATA Technical data Motor Cylinder displacement, K 970, K 970 Rescue cu.in/cm3 5,7/93,6 Cylinder bore, inch/mm 2,2/56 Stroke, inch/mm 1,5/38 Idle speed, rpm 2700 Recommended 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.
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! 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.
