Operator′s manual 3120XP 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! Chain saws can be dangerous! Careless or incorrect use can result in 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.
CONTENTS Contents KEY TO SYMBOLS Symbols on the machine: ..................................... Symbols in the operator’s manual: ....................... CONTENTS Contents ............................................................... INTRODUCTION Dear Customer, .................................................... WHAT IS WHAT? What is what on the chain saw? ........................... GENERAL SAFETY PRECAUTIONS Before using a new chain saw .............................. Important ..........................
INTRODUCTION Dear Customer, Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the waterpowered plant.
WHAT IS WHAT? What is what on the chain saw? 1 Cylinder cover 17 Chain catcher (Catches chain if it jumps or breaks.) 2 Front handle 18 Clutch cover with built-in chain brake. 3 Front hand guard 4 Starter 19 Right hand guard (Protects right hand if chain breaks or jumps.) 5 Chain oil tank 20 Throttle control 6 Starter handle 7 Adjuster screws carburettor 21 Throttle lockout (Prevents accidental operation of throttle control.
GENERAL SAFETY PRECAUTIONS Before using a new chain saw • Please read this manual carefully. • Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly. • Refuel and start the chain saw. See the instructions under the headings Fuel Handling and Starting and Stopping. • Do not use the chain saw until sufficient chain oil has reached the chain. See instructions under the heading Lubricating cutting equipment.
GENERAL SAFETY PRECAUTIONS provide information about which training materials and courses are available. carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest service workshop. ! Work is constantly in progress to improve the design and technology - improvements that increase your safety and efficiency. Visit your dealer regularly to see whether you can benefit from new features that have been introduced.
GENERAL SAFETY PRECAUTIONS • • The front hand guard is not designed solely to activate the chain brake. Another important feature is that it reduces the risk of your left hand hitting the chain if you lose grip of the front handle. of the chain saw in relation to the object that the kickback zone of the bar strikes. If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake is designed to be activated by the inertia in the kickback direction.
GENERAL SAFETY PRECAUTIONS Will my inertia activated chain brake always activate during kickback in the event of a kickback? No. First your brake must be in working order. Testing the brake is simple, see instructions under the heading Checking, maintaining and servicing chain saw safety equipment. We recommend you do before you begin each work session. Second the kickback must be strong enough to activate the chain brake.
GENERAL SAFETY PRECAUTIONS Stop switch General rules Use the stop switch to switch off the engine. • Only use cutting equipment recommended by us! See instructions under the heading Technical data. • Keep the chain’s cutting teeth properly sharpened! Follow our instructions and use the recommended file gauge. A damaged or badly sharpened chain increases the risk of accidents. • Maintain the correct depth gauge setting! Follow our instructions and use the recommended depth gauge clearance.
GENERAL SAFETY PRECAUTIONS Bar • The smaller the tip radius the lower the chance of kickback. Chain oil hole and hole for chain tensioner. The bar must be matched to the chain saw design. Chain A chain is made up of a number of links, which are available in standard and low-kickback versions. Chain • Chain pitch (inches) • Drive link width (mm/inches) • Number of drive links. IMPORTANT! No saw chain design eliminates the danger of kickback.
GENERAL SAFETY PRECAUTIONS When you sharpen a cutting tooth there are four important factors to remember. 1 Filing angle 2 Cutting angle 3 File position 4 Round file diameter • Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly. • Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw over and file the teeth on the other side.
GENERAL SAFETY PRECAUTIONS • acheive the correct depth gauge setting and bevel for the depth gauge. • Place the depth gauge tool over the chain. Detailed information regarding the use of the depth gauge tool, will be found on the package for the depth gauge tool. Use the flat file to file off the tip of the depth gauge that protrudes through the depth gauge tool. The depth gauge setting is correct when you no longer feel resistance as you draw the file along the depth gauge tool.
GENERAL SAFETY PRECAUTIONS Checking chain lubrication • Chain drive sprocket Check the chain lubrication each time you refuel. See instructions under the heading Lubricating the bar tip sprocket. Aim the tip of the bar at a light coloured surface about 20 cm (8 inches) away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface.
GENERAL SAFETY PRECAUTIONS Bar ! Check regularly: • • • • Whether there are burrs on the edges of the bar. Remove these with a file if necessary. Whether the groove in the bar has become badly worn. Replace the bar if necessary. Whether the tip of the bar is uneven or badly worn. If a hollow forms on the underside of the bar tip this is due to running with a slack chain. WARNING! Most chain saw accidents happen when the chain touches the operator. Wear personal protective equipment.
ASSEMBLY Fitting the bar and chain ! Fit the clutch cover and locate the chain adjuster pin in the hole in the bar. Check that the drive links of the chain fit correctly over the drive sprocket and that the chain is correctly located in the groove in the bar. Tighten the bar nuts finger tight. WARNING! Always wear gloves, when working with the chain. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle.
FUEL HANDLING Fuel Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of petrol and twostroke oil. It is important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of fuel, even small inaccuracies can drastically affect the ratio of the mixture. ! • Use good quality unleaded or leaded petrol. • CAUTION! Engines equipped with catalytic converters must be run on unleaded fuel mixtures.
FUEL HANDLING Extra chain oil Under EXTREME conditions the chain and bar may require extra chain oil. The oil flow should only be increased when the engine is running and the chain rotating. Push the lever to the right, where it will automatically be held in the locked position. Press in the lever button to release it. therefore always fill the chain oil tank and fuel tank at the same time. STOP STOP ! Note: It is not necessary to pump continuously.
FUEL HANDLING Transport and storage • Always store the chain saw and fuel so that there is no risk of leakages or fumes coming into contact with sparks or naked flames from electrical equipment, electric motors, relays/switches, boilers and the like. • Always store fuel in an approved container designed for that purpose. • For longer periods of storage or for transport of the chain saw, the fuel and chain oil tanks should be emptied.
STARTING AND STOPPING Starting and stopping ! WARNING! Note the following before starting: If the machine is fitted with a decompression valve (A): Press the valve to reduce the pressure in the cylinder and make starting easier. You should always use the decompression valve when starting the machine. Once the machine has started the valve will automatically return to its original setting. Never start a chain saw unless the bar, chain and all covers are fitted correctly.
STARTING AND STOPPING Push in the choke control as soon as the engine fires and keep pulling until the engine starts. When the engine starts, quickly apply full throttle; the throttle start lock will automatically disengage. As the chain brake is still engaged the speed of the engine must be set to idling as soon as possible, this is achieved by quickly disengaging the throttle lock. This prevents unnecessary wear to the clutch, clutch drum and brake band.
WORKING TECHNIQUES Before use: CAUTION! Follow the instructions above, but do not use a chain saw in a situation where you cannot call for help in case of an accident. , 1 Check that the chain brake works correctly and is not damaged. 2 Check that the rear right hand guard is not damaged. 3 Check that the throttle lockout works correctly and is not damaged. 4 Check that the stop switch works correctly and is not damaged. 5 Check that all handles are free from oil.
WORKING TECHNIQUES effect of kickback and lets you keep the chain saw under control. Do not let go of the handles! 3 Most kickback accidents happen during limbing. Make sure you are standing firmly and that there is nothing in the way that might make you trip or lose your balance. Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch, nearby tree or some other object. Have control over the workpiece.
WORKING TECHNIQUES 9 Follow the instructions on sharpening and maintaining your bar and chain. When you replace the bar and chain use only combinations that are recommended by us. See instructions under the headings Cutting equipment and Technical data. 4 Is there a risk of kickback? 5 Do the conditions and surrounding terrain affect how safely you can stand and move about? Basic cutting technique ! WARNING! Never use a chain saw by holding it with one hand.
WORKING TECHNIQUES inadvertently getting a kickback, as well as increasing the risk of losing your balance while working. Start by cutting from above (about 1/3 of the way through). Finish by cutting from below so that the two cuts meet. Tree felling technique The log is lying on the ground. There is little risk of the chain jamming or the object splitting. However there is a risk that the chain will touch the ground when you finish the cut. IMPORTANT! It takes a lot of experience to fell a tree.
WORKING TECHNIQUES IMPORTANT! During critical felling operations, hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard. Next make the bottom cut so that it finishes exactly at the end of the top cut. Clearing the trunk and preparing your retreat 1 Delimb the stem up to shoulder height. It is safer to work from the top down and to have the tree between you and the saw.
WORKING TECHNIQUES The felling hinge controls the direction that the tree falls in. Freeing a tree that has fallen badly Freeing a ”trapped tree” It is very dangerous to remove a trapped tree and there is high accident risk. Never try to fell the tree that is trapped. Never work in the risk zone of the hanging trapped tree. All control over the felling direction is lost if the felling hinge is too narrow or non-existent, or if the directional cuts and felling cut are badly placed.
WORKING TECHNIQUES Continue to cut deeper until tree/limb bends and tension is released. Kickback only occurs if the kickback zone of the bar touches an object. Cut tree/limb from outside the bend, after tension has been released. Limbing How to avoid kickback ! WARNING! Kickback can happen very suddenly and violently; kicking the chain saw, bar and chain back at the user. If this happens when the chain is moving it can cause very serious, even fatal injuries.
MAINTENANCE Carburettor Fine adjustment Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. After the engine has used 8-10 tanks of fuel the engine will be run-in. To ensure that it continues to run at peak performance and to minimise harmful exhaust emissions after the running-in period, ask your dealer/ service workshop (who will have a rev counter at their disposal) to adjust your carburettor.
MAINTENANCE High speed jet H Checking the front hand guard This chain saw is equipped with a carburettor that has a built-in fixed high speed jet. CAUTION! There is an integrated speed governor in the ignition that limits the maximum speed to 12,000 rpm. Adjusting the jet therefore has no effect on the maximum speed. The high speed jet affects the chain saw’s power. Make sure the front hand guard is not damaged and that there are no visible defects such as cracks.
MAINTENANCE Checking the brake trigger • Check that the throttle control and throttle lockout move freely and that the return springs work properly. • Start the chain saw and apply full throttle. Release the throttle control and check that the chain stops and remains stationary. If the chain rotates when the throttle control is in the idle position you should check the carburettor idle adjustment. Place the chain saw on firm ground and start it.
MAINTENANCE Vibration damping system Regularly check the vibration damping units for cracks or deformation. clean the mesh at least once a week. This is best done with a wire brush. A blocked mesh will cause the engine to overheat and may lead to serious damage. Note! The mesh must be replaced if it is damaged. If the mesh is blocked the machine will overheat and this will cause damage to the cylinder and piston. Never use a machine with a muffler that is in poor condition.
MAINTENANCE • • Pull out the cord approx. 30 cm and hook it into the notch in the rim of the pulley. Release the recoil spring by letting the pulley rotate slowly backwards. Undo the screw in the centre of the pulley and remove the pulley. Insert and fasten a new starter cord to the pulley. Wind approx. 3 turns of the starter cord onto the pulley. Connect the pulley to the recoil spring so that the end of the spring engages in the pulley. Fit the screw in the centre of the pulley.
MAINTENANCE Air filter Spark plug The air filter must be regularly cleaned to remove dust and dirt in order to avoid: The spark plug condition is influenced by: • Incorrect carburettor adjustment. • Carburettor malfunctions • • Starting problems An incorrect fuel mixture (too much or incorrect type of oil). • Loss of engine power • A dirty air filter. • Unnecessary wear to engine parts. • Excessive fuel consumption. • Remove the air filter after taking off the air filter cover.
MAINTENANCE Needle bearing lubrication Cooling system The clutch drum is fitted with one of the following drive sprockets: •A Spur sprocket (the chain sprocket is welded on the drum) •B Rim sprocket (replaceable) To keep the working temperature as low as possible the machine is equipped with a cooling system. The cooling system consists of: 1 Air intake on the starter. 2 Air guide plate. 3 Fins on the flywheel. 4 Cooling fins on the cylinder. 5 Cylinder cover (directs cold air over the cylinder).
MAINTENANCE Maintenance schedule The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the Maintenance section. Daily maintenance Weekly maintenance Monthly maintenance Clean the outside of the machine. On chain saws without a catalytic converter, check the cooling system weekly. Check the brake band on the chain brake for wear. Replace when less than 0.6 mm (0,024 inch) remains at the most worn point.
TECHNICAL DATA Technical data 3120XP Engine Cylinder displacement, cm3 118,8 Cylinder bore, mm 60 Stroke, mm 42 Idle speed, rpm 2500 Power, kW/ rpm 6,2/9000 Ignition system Spark plug Champion RCJ 7Y/ NGK BPMR 7A Electrode gap, mm 0,5 Fuel and lubrication system Fuel tank capacity, litre 1,25 Oil pump capacity at 9,000 rpm, ml/min 30-54 Oil tank capacity, litre 0,7 Type of oil pump Automatic/Manual for extra oil flow Weight Chain saw without bar or chain, empty tanks, kg 10,4 Noise em
TECHNICAL DATA Bar and chain combinations The following cutting attachments are approved for the model Husqvarna 3120XP. Bar Length, inch Pitch, inch Gauge, mm Chain Max. nose radius Type 76 24 28 30 Length, drive links (no.
TECHNICAL DATA EC-declaration of conformity (Applies to Europe only) Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel +46-36-146500, declares under sole responsibility that the chain saw for forest service Husqvarna 3120XP from 2009’s serial numbers and onwards (the year is clearly stated in plain text on the type plate with subsequent serial number), is in conformity with the requirements of the COUNCIL’S DIRECTIVES: - of May 17, 2006 "relating to machinery" 2006/42/EC - of December 15, 2004 ”relating to ele
Original instructions 1153183-26 ´®z+U2@¶6G¨ ´®z+U2@¶6G¨ 2010-04-01