Husqvarna 455 RANCHER User Manual CHAIN SAW Manuals And Guides L0522159
HUSQVARNA Chainsaw, Gas Manual L0522159 HUSQVARNA Chainsaw, Gas Owner's Manual, HUSQVARNA Chainsaw, Gas installation guides
User Manual: Husqvarna 455 RANCHER 455 RANCHER HUSQVARNA CHAIN SAW - Manuals and Guides View the owners manual for your HUSQVARNA CHAIN SAW #455RANCHER. Home:Lawn & Garden Parts:Husqvarna Parts:Husqvarna CHAIN SAW Manual
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Operator's _anua[ _EPA I[ Please read the operat:ol _s manual calefully and make sule you understand the instl uc_:ions before using the machine. KEY TO SYMBOLS Key to symbols Refuelling. WARNING! Chain saws can be dangerous! Careless or improper use can result in serious or fatal iniury to the operator or others. Filing with oil and adjusting oil flow. Please read the operator's manual carefully and make sure you understand the instructions before using the machine. The chain brake must be engaged when the chain saw is started. Always wear: Approved protective helmet Approved hearing protection Protective goggles or a visor Both of the operator's hands must be used to operate the chain saw. Never operate a chain saw holding it with one hand only. @ Contact of the guide bar tip with any obiect must be avoided. Tip contact may cause the guide bar to move suddenly upward and backward (socalled kickback), which may cause serious injury. Other symbNs/decNs on the machine refer to speciam certification requirements for certain markets. Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance. Always wear approved protective gloves. The Emissions Compliance Period referred to on the Emission Compliance labe! indicates the number of operating hours for which the engine has been shown to meet Federal emissions requirements. Category C = 50 hours, B = 125 hours, and A = 300 hours. Maintenance, replacement, or repair of the emission control devices and system may be performed by any nonroad engine repair establishment or individual. WARNING Regular cleaning is required. Visual check. Protective goggles or a visor must be worn. 2 - English The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Contents KEYTO SYMBOLS Key to symbols ............................................................. CONTENTS 2 Contents 3 ...................................................................... INTRODUCTION Dear customer! ............................................................ 4 WHAT IS WHAT? What is what on the chain saw? .................................. 5 GENERAL SAFETY PRECAUTIONS Before using a new chain saw ..................................... 6 Important ...................................................................... 6 Always use common sense 6 ......................................... Personal protective equipment Machine's safety equipment ..................................... 7 ........................................ 7 Cutting equipment ........................................................ ASSEMBLY 10 Fitting the bar and chain .............................................. FUEL HANDLING 16 Fuel .............................................................................. 17 Fueling ......................................................................... 18 Fuel safety ................................................................... STARTING AND STOPPING 18 Starting and stopping ................................................... WORKING TECHNIQUES 19 Before use: ................................................................... 21 General working instructions ....................................... How to avoid kickback .................................................. 21 28 MAINTENANCE General ........................................................................ 29 Carburetor adjustment 29 ................................................. Checking, maintaining and servicing chain saw safety equipment .................................................................... Muffler .......................................................................... 30 32 Starter .......................................................................... 33 Air filter ......................................................................... 34 Spark plug .................................................................... 34 Lubricating the bar tip sprocket .................................... 34 Needle bearing lubrication ........................................... 35 Adjustment of the oil pump .......................................... 35 Cooling system ............................................................ 35 "Air injection" centrifugal cleaning ................................ Winter use .................................................................... 35 36 Maintenance schedule ................................................. 37 TECHNICAL DATA Technical data .............................................................. 38 Bar and chain combinations 39 ........................................ 38 FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLiGATiONS AMERICAN ..... 4O STANDARD SAFETY PRECAUTIONS Safety precautions for chain saw users ....................... 41 English - 3 Dear customer! Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to !689, when the Swedish King Karl Xl ordered the construction of a factory on the banks of the Huskvarna River, for production of muskets. The location was !ogical, since water power was harnessed from the Huskvarna River to create the waterupowered plant. During over 300 years of continuous operation, the Husqvarna factory has produced a lot of different products, from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today. Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our highest priority. We develop, manufacture and market high quality motor driven products for forestry and gardening as well as for building and construction industry. Your purchase gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorized dealers, ask for the address of your nearest servicing dealer. It is our wish that you will be satisfied with your product and that it will be your companion for a Iong time. Think of this operator's manual as a valuable document. By following its' content (using, service, maintenance etc) the Iife span and the seconduhand value of the machine can be extended. If you ever lend or sell this machine, make sure that the borrower or buyer gets the operator's manual, so they will also know how to properly maintain and use it. Thank you for using a Husqvarna product. Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice. For customer assistance call: 704_921 _7000 or contact us at our website: www.husqvarna.com 4 - English WHAT iS WHAT? @ H[/_l_lglglglglglg What is what on the chain saw? 1 Cylinder cover 16 Bar tip sprocket 2 Starter handle 17 Chain 3 Air purge 18 Bar 4 Stop switch dgnition on/off switch,) 19 Bumper spike 5 Rear handle 20 Chain tensioning screw 6 Choke controWStart throttle lock 21 Chain catcher 7 Fuel tank 22 Oil pump adjustment screw 8 Adiuster screws carburetor 23 Clutch cover 9 Starter 24 Right hand guard 10 Chain oil tank 25 Throttle control 11 Throttle Iock 26 Operator's manual 12 Decompression valve 27 Combination spanner 13 Front handle 28 Bar guard 14 Front hand guard 29 Information and warning decal 15 Muffler 30 Product and serial number plate English - 5 Before using GENERAL SAFETY PRECAUTIONS a new chain saw important Please read this manuaI 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 Handiing and Starting and Stopping. Do not use the chain saw until sufficient ctqain eli has reached the chain. See instructions under the heading Lubricating cutting equipment. Long-term exposure to noise can result in permanent hearing impairment. So always use approved hearing protection= WARNING! Under no circumstances may the design of the machin e be modified without the _ermiesion of the manufacturer. A_ways use genuine aeeeeeories_ Nen.authodzed modifications and!or accessories can resumt in serious persona! injury er the death of the opetator or others. Your warranty may not cove r damage or liabii!ty caused by the use of nonoauthorized aceeaeories or replacement parts, IMPORTANT! The machine is only designed for cutting wood. You should only use the saw with the bar and chain combinations we recommend in the chapter Technical data. Never use the machine if you are fatigued, while under the influence of alcohol or drugs, medication or anything that could affect your vision, aIertness, coordination or judgement= Wear personal protective equipment= See instructions under the heading Personal protective equipment. Do not modify this product or use it if it appears to have been modified by others= Never use a machine that is faulty. Carry out the checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualified specialists= See instructions under the heading Maintenance= Never use any accessories other than those recommended in this manual See instructions under the headings Cutting equipment and Technical data. CAUTION! Always wear protective glasses or a face visor to reduce the risk of iniury from thrown obiects= A chain saw is capable of throwing obiects, such as wood chips, small pieces of wood, etc, at great force=This can result in serious injury, especially to the eyes. conte_ operator's manual inside of the muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a WAF{N!NG! Faulty cutting equipment or the / V\ wrong oomb nat ofbar on andsawcho . increases the r!sk of kickback! On!y use the bar!saw chain combinations we recommend, and follow the filing instructional See inetruct!0nS under the heading Techniea! data. Always use common sense It is not possible to cover every conceivable situation you can face when using a chain saw=Always exercise care and use your common sense= Avoid aII situations which you consider to be beyond your capabiIity= If you stiII feeI uncertain about operating procedures after reading these instructions, you should consult an expert before continuing= Do not hesitate to contact your dealer or us if you have any questions about the use of the chain saw. We will willingly be of service and provide you with advice as well as help you to use your chain saw both efficiently and safely= Attend a training course in 6 - English GENERAL SAFETY PRECAUTIONS chain saw usage if possible. "Your dealer, forestry schoo! or your library can provide information about which training materials and courses are available. GeneraIIy clothes should be close-fitting without restricting your freedom of movement= iMPORTANT! Sparks can come from the muffler, the bar and chain or other sources. Always have fire extinguishing tools avaiIable if you should need them= Help prevent forest Machine's safety equipment In this section the machine's safety features and their function are explained. For inspection and maintenance see instructions under the heading Checking, maintaining and servicing chain saw safety equipment. See instructions under the heading, What is what?, to find where these parts are located on your machine= 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. Personal protective WARNING! The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest servicing dealer. equipment Most chain saw accidents happea when the chain touches the operator, You must use approved personal Protective equipment whenever you use the machine, PersonaJ protective equipment canner eliminate the risk of injury but it W!H reduce the degree Of injury if an accident does happen. Ask your dealer for he!p in choosing the right equipment, _ be inspected and maintained. See instructions undet" the heading Checking, mainia!ning and serve ng chain saw safety equipment, If you machine doesnotpas thecheoks,| take the_eaier Chain brake and front for repair. hand guard Your chain saw is equipped with a chain brake that is designed to stop the chain if you get a kickback. The chain brake reduces the risk of accidents, but only you can prevent them= Take care when using your saw and make sure the kickback zone of the bar never touches any object= Approved protective helmet Hearing protection Protective goggles or a visor Gloves with saw protection Trousers with saw protection Boots with saw protection, steel toe-cap and non-slip sole Always have a first aid kit nearby. Fire Extinguisher and Shovel The chain brake (A) can either be activated manually (by your Ieft hand) or automatically by the inertia release mechanism. The brake is applied when the front hand guard (B) is pushed forwards. English - 7 GENERAL SAFETY PRECAUTmONS This movement activates a spring-Ioaded mechanism that tightens the brake band (C) around the engine drive system (D) (clutch drum). C D The front hand guard is not designed solely to activate the chain brake. Another important feature is that it reduces the risk of the chain hitting your left hand if you lose grip of the front handle. Kickback can be very sudden and violent. Most kickbacks are minor and do not always activate the chain brake. If this happens you should hold the chain saw firmly and not let go. The way the chain brake is activated, either manuaily or automatically by the inertia release mechanism, depends on the force of the kickback and the position of the chain saw in relation to the obiect 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. The chain brake must be engaged when the chain saw is started to prevent the saw chain from rotating. If the kickback is tess violent or the kickback zone of the bar is closer to you the chain brake is designed to be activated manually by the movement of your left hand. Use the chain brake as a "parking brake" when starting and when moving over short distances, to reduce the risk of moving chain accidentally hitting your leg or anyone or anything close by. In the felling position the Ieft hand is in a position that makes manual activation of the chain brake impossible. With this type of grip, that is when the Ieft hand is placed so that it cannot affect the movement of the front hand guard, the chain brake can oniy be activated by the inertia action. To release the chain brake pulI the front hand guard backwards, towards the front handle. 8 - English GENERAL Will my hand atways activate brake during a kickback? SAFETY PRECAUTIONS the chain No. It takes a certain force to move the hand guard forward. If your hand onIy lightly touches the front guard or slips over it, the force may not be enough to trigger the chain brake. You should aIso maintain a firm grip of the chain saw handles while working. If you do and experience a kickback, your hand may never Ieave the front handle and wiII not activate the chain brake, or the chain brake wilI onIy activate after the saw has swung around a considerable distance. In such instances, the chain brake might not have enough time to stop the saw chain before it touches you. Chain catcher The chain catcher is designed to catch the chain if it snaps or jumps off. This should not happen if the chain is property tensioned (see instructions under the heading Assembly) and if the bar and chain are property serviced and maintained (see instructions under the heading General working instructions), There are also certain positions in which your hand cannot reach the front hand guard to activate the chain brake; for example, when the saw chain is held in felling position. Will my inetria activated chain brake a_ways 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. If the chain brake is too sensitive it would activate all the time which would be a nuisance. Right hand guard Apart from protecting your hand if the chain jumps or snaps, the right hand guard stops branches and twigs from interfering with your grip on the rear handle. Wili my chain brake always protect me from injury in the event of a kickback? No. First, the chain brake must be in working order to provide the intended protection. Second, it must be activated during the kickback as described above to stop the saw chain. Third, the chain brake may be activated but if the bar is to close to you the brake might not have enough time to slow down and stop the chain before the chain saw hits you. Ordy you and proper working kickback and its danger° Throttle technique Vibration damping system "Your machine is equipped with a vibration damping system that is designed to reduce vibration and make operation easier. can eliminate _ock The throttle lock is designed to prevent accidental operation of the throttle control When you press the lock (A) (Le. when you grasp the handIe) it releases the throttle controI (B). When you release the handle the throttle control and the throttle Iock both move back to their original positions. This arrangement means that the throttle control is automatically locked at the idte setting. The machine's vibration damping system reduces the transfer of vibration between the engine unWcutting equipment and the machine's handle unit. The body of the chain saw, including the cutting equipment, is insulated from the handles by vibration damping units. B English - 9 GENERAL SAFETY PRECAUTIONS Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conifers). Cutting with cutting equipment that is blunt or faulty (wrong type or badly sharpened) will increase the vibration level. WARNING! _ Overexposure tO vibration can ead to circulatory damage or nerve damage !n people who hav e impaired circujationl Contact your doctor if you e×perience symptoms of overexposure to vibration, Such symptoms include numbness, lose of feeling, tingling, pricking , pain, loss of strength, changes in skin ¢olour or condition,These symptoms normally appear _antiaHy Cutting increase equipment This section describes how to choose and maintain your cutting equipment in order to: Reduce the risk of kickback= Reduce the risk of the saw chain breaking or jumping off the bar= Obtain optimal cutting performance. Extend the life of cutting equipment. symptoms may be increased temperatures, in cold Avoid increasing vibration levels= Genera_ Stop switch Use the stop switch to switch off the engine. ',\ ru_es Onmy 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 fiBe gauge, A damaged or badly sharpened chain increases the risk of accidents= Muffler The muffler is designed to keep noise Ievels to a minimum and to direct exhaust fumes away from the user. _teo Never start the In areas with a hot, dry climate there is a high risk of fires= These areas are sometimes subiect to government rules requiring among other things the muffler must be equipped with an approved type of spark arrestor mesh. CAUTION! The muffler gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when working near flammable substances and/ Or vapours. 10 - English Maintain the correct depth gauge setting! Follow our instructions and use the recommended depth gauge clearance. Too large a clearance increases the risk of kickback. Keep the chain properly tensioned! If the chain is slack it is more Iikely to jump off and lead to increased wear on the bar, chain and drive sprocket. Keep cutting equipment welm lubricated and properly maintained! A poorly lubricated chain is more likely to break and Iead to increased wear on the bar, chain and drive sprocket= GENERAL Cutting equipment kickback / T\ WARNING! designed Faulty cutting SAFETY PRECAUTIONS to reduce equipment Bar groove width (inches/mm). The groove in the bar must match the width of the chain drive links. or the wro.gcomb oatofbar o, nodsawChain increases _he risk of kickback! On!y use the bar!saw chain combinations we recommend, and _o!low the filing instructions, See instructions under _he heading Technica! data. Chain oil hole and hole for chain tensioner. The bar must be matched to the chain saw design. The onIy way to avoid kickback is to make sure that the kickback zone of the bar never touches anything= By using cutting equipment with "buiR-in" kickback reduction and keeping the chain sharp and well-maintained you can reduce the effects of kickback. Chain Chain pitch (inches) Bar The smaller the tip radius the lower the chance of kickback. 2 PITCH = D _ Chain A chain is made up of a number of links, which are available in standard and low-kickback versions= Drivelink width(ram/inches) IMPORTANT! No saw chain design eliminates the danger Number of drive links, Some terms that describe the bar and chain To maintain the safety features of the cutting equipment, you should replace a worn or damaged bar or chain with a bar and chain combinations recommended by Husqvarna. See instructions under the heading Technical Data for a list of replacement bar and chain combinations we recommend. Sharpening your chain depth gauge setting General Bar information and adjusting on sharpening cutting teeth Length (inches/cm) Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the chips wiII be very small= If the chain is very biunt it wJJJproduce wood powder and no chips or shavings= Number of teeth on bar tip sprocket (T). A sharp chain eats its way through the wood and produces long, thick chips or shavings. Chain pitch (inches). The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket. Number of drive links. The number of drive links is determined by the length of the bar, the chain pitch and the number of teeth on the bar tip sprocket. The cutting part of the chain is called the cutter and consists of a cutting tooth (A) and the depth gauge (B). The cutters cutting depth is determined by the difference in height between the two (depth gauge setting). A English - 11 GENERAL SAFETY PRECAUTIONS When you sharpen a cutting tooth there are four important factors to remember. 1 Filing angle 2 Cutting angle Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. FiIe alI the teeth on one side first, then turn the chain saw and file the teeth on the other side. File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (0.16") the chain is worn out and should be replaced. rain 4 mm o/ 3 File position General 4 advice on adjusting depth gauge setting When you sharpen the cutting tooth (A) the depth gauge setting (C) will decrease. To maintain optimal cutting performance the depth gauge (B) has to be filed down to achieve the recommended depth gauge setting. Round file diameter it is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain. See instructions under the heading TechnicaI data to find the correct depth gauge setting for your particular chain. c 0 See instructions under the heading Technical data for information about sharpening your chain. Adjustment Sharpening cutting teeth To sharpen cutting teeth you will need a round file and a file gauge= See instructions under the heading TechnicaI data for information on the size of file and gauge that are recommended for the chain fitted to your chain saw. Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly= 1 2 - English of depth gauge setting The cutting teeth should be newly sharpened before adjusting the depth gauge setting. We recommend that you adjust the depth gauge setting every third time you sharpen the cutting teeth. NOTE! This recommendation assumes that the length of the cutting teeth is not reduced excessively= You will need a flat file and a depth gauge tool= We recommend that you use our depth gauge tooi to 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, wiII be found on the package for the depth gauge tool. Use the fiat file to file off the tip of the depth gauge that protrudes GENERAL SAFETY PRECAUTmONS 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. Lubricating cutting equipment Chain oil Tensioning the chain Chain oil must demonstrate good adhesion to the chain and also maintain its flow characteristics regardless of whether it is warm summer or cold winter weather. As a chain saw manufacturer we have developed an optimal chain oil which has a vegetable oil base. We recommend the use of our own oil for both maximum chain life and to minimise environmental damage. If our own chain oil is not available, standard chain oil is recommended. The more you use a chain the longer it becomes. It is therefore important to adiust the chain regularly to take up the slack. Check the chain tension every time you refuel. NOTE! A new chain has a running-in period during which you should check the tension more frequently. Tension the chain as tightly as possible, but not so tight that you cannot pull it round freely by hand. Never use waste oil! Using waste oil can be dangerous to you and damage the machine and environment. IMPORTANT! When using vegetable based saw chain oil, dismantle and clean the groove in the bar and saw chain before long-term storage. Otherwise there is a risk of the saw chain oil oxidizing, which will result in the saw chain becoming stiff and the bar tip sprocket iamming. Fitting with chain oil All our chain saws have an automatic chain lubrication system. On some models the oil flow is also adiustabte. Loosen the bar nuts that hold the clutch cover/chain brake. Use the combination spanner. Then tighten the bar nuts by hand as tight as you can. The saw chain oil tank and the fuel tank are designed so that the fuel runs out before the saw chain oil. Raise the tip of the bar and stretch the chain by tightening the chain tensioning screw using the combination spanner. Tighten the chain until it does not sag from the underside of the bar. However, this safety feature requires that you use the right sort of chain oil (if the oil is too thin it will run out before the fuel), and that you adiust the carburetor as recommended (a lean mixture may mean that the fuel lasts longer than the oil) and that you also use the recommended cutting equipment (a bar that is too long will use more chain oil). Checking chain lubrication Check the chain lubrication each time you refuel. See instructions under the heading Lubricating the bar tip sprocket. Use the combination spanner to tighten the bar nuts while lifting the tip of the bar at the same time. Check that you can pull the chain round freely by hand and that it does not sag from the underside of the bar. 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. The position of the chain tensioning screw on our chain saws varies from model to model. See instructions under the heading What is what? to find out where it is on your model. English - 13 GENERAL SAFETY PRECAUTmONS If the chain lubrication is not working: Checking wear on cutting equipment Check that the eli channel in the bar is not obstructed, Clean if necessary, Check the chain daily for: Check that the groove in the edge of the bar is clean, Clean if necessary, Visible cracks in rivets and links_ Whether the chain is stiff, Whether rivets and links are badly worn, Replace the saw chain if it exhibits any of the points above, We recommend you compare the existing chain with a new chain to decide how badly the existing chain is worn, Check that the bar tip sprocket turns freely and that the lubricating hole in the tip sprocket is not blocked, Clean and lubricate if necessary, When the length of the cutting teeth has worn down to onIy 4 mm (0,16 inch) the chain must be replaced, Bar Check regularly: Whether there are burrs on the edges of the bar, Remove these with a file if necessary, Ufthe chain lubrication system is still not working after carrying out the above checks and associated measures you should contact your servicing dealer, Chain drive sprocket 'll Whether the groove in the bar has become badly worn, Replace the bar if necessary, 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) Regularly check the degree of wear on the drive sprocket, Replace if wear is excessive, Replace the drive sprocket whenever you replace the chain, Needle bearing lubrication Both versions of sprockets have a needle bearing on the drive shaft, which has to be greased regularly (once a week), CAUTION! Use only high quality bearing grease or engine oil, See instructions under the heading Maintenance, Needle bearing lubrication, 14 - English 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, GENERAL SAFETY PRECAUTIONS To prolong the life of the bar you should turn it over daily. _k WARNIING! Most chain saw accidents happen when the chain touches operator. the Wear personal protective equipment. See instructions under the heading Personam protective equipment. Do not tackte any job that you feeU you are not adequately trained for. See instructions under the headings Personal protective equipment, How to avoid kickback, Cutting equipment and General working instructions. Avoid situations where there is a risk of kickback. See instructions under the heading Machine's safety equipment. Use the recommended protective equipment and check its condition. See instructions under the heading General working instructions. Check that al_ the chain saw safety _'eatures are working. See instructions under the headings General working instructions and General safety precautions. English - 15 ASSEMBLY Fitting the bar and chain The chain is correctly tensioned when it does not sag from the underside of the bar, but can still be turned easily by hand. Hoid up the bar tip and tighten the bar nuts with the combination spanner. your hands from injury. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle. Remove the bar nuts and remove the clutch cover (chain brake). Take off the transportation ring (A). When fitting a new chain, the chain tension has to be checked frequently until the chain is run-in. Check the chain tension regularly. A correctly tensioned chain ensures good cutting performance and long life. NOTE! Note: if clutch cover is difficult to remove, replace bar nuts, engage brake and rerelease (an audible click will be heard if released properly). Fit the bar over the bar bolts. Place the bar in its rearmost position. Place the chain over the drive sprocket locate it in the groove on the bar. Begin on the top edge of the bar. Make sure that the edges of the cutting links are facing forward on the top edge of the bar. 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. Tension the chain by turning the chain tensioning screw clockwise using the combination spanner. The chain should be tensioned until it does not sag from the underside of the bar. 1 6 - English FUEL HANDUNG Fuel Mi×ing ratio Note! The machine is equipped with a two-stroke engine and must always be run using a mixture of gasoline and twostroke oil Htis important to accurately measure the amount of oil to be mixed to ensure that the correct mixture is obtained. When mixing small amounts of rue!, even smalI inaccuracies can drastically affect the ratio of the mixture. Gasoline 1:50 (2%) for all engines Two-stroke oil, mitre Gasoline, litre 2% (1:50) 5 0,10 10 0,20 15 0,30 20 0,40 US gallon US fL oz° 1 2 1/2 2 1/2 6 1/2 5 12 7/8 Mixing This engine is certified gasoline. to operate on unleaded Use good quality unleaded gasoline. Engines equipped with catamytic converters must be run on unleaded fuel mixtures. The lowest recommended octane grade is 87 ((RON+MON)/2). Hfyou run the engine on a lower octane grade than 87 so-called knocking can occur. This gives rise to a high engine temperature and increased bearing load, which can resuIt in serious engine damage. 4_ When working with continuous high revs (e.g. limbing) a higher octane is recommended. Environment fueJ HUSQVARNA recommends the use of alkyiate fuel or environment fuel for four-stroke engines blended with twostroke oil as set out below. Note that carburetor adiustment may be necessary when changing the type of fuel (see instructions under the heading Carburetor). Always start by filling half the amount of the gasoline to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline. Mix (shake) the fuel mixture thoroughly before filling the machine's fuel tank. Running-in Avoid running at a too high speed for extended periods during the first 10 hours: Two-stroke Always mix the gasoline and oil in a clean container intended for fuel oH For best results and performance use HUSQVARNA twostroke oil, which is specially formulated for our two-stroke engines. Do not mix more than one month's supply of fuel at a time. If the machine is not used for some time the fuel tank should be emptied and cleaned. Chain oim We recommend the use of special oil (chain oil) with good adhesion characteristics. Never use two-stroke oil intended for water-cooled outboard engines, sometimes referred to as outboard oil. Never use oil intended for four-stroke engines. Never use waste oil. This results in damage to the oil pump, the bar and the chain. It is important to use oiI of the right grade (suitable viscosity range) to suit the air temperature. In temperatures below 0°C (32°F) some oils become too viscous. This can overload the oiI pump and result in damage to the oiI pump components. Contact your service agent when choosing chain oil. English - 17 FUEL HANDUNG Fueling Fuel safety Never refuel the machine whiIe the engine is running. Make sure there is plenty of ventilation when refuelling or mixing fuel (gasoline and 2-stroke oH). VV'ARNING! Taking the following Move the machine at least 3 m from the refuelling point before starting it. precautions. will lessen the risk of fire: Do not smoke and do not place any hot objects in the vicinity of fuel AJwaye stop the engine and metit cool for a few minutes before refuelling. When refuelling, that any excess Tighten open the fuel cap siowty so pressure is released gently. the fuel cap carefully after refuelling. Atways move the machine away from the refuelling area before starting. Clean the area around the fuel cap. Clean the fueI and chain oil tanks reguIady. The rue! filter must be replaced at least once a year. Contamination in the tanks causes malfunction. Make sure the fuel is welI mixed by shaking the container before refuelling. The capacities of the chain oil tank and fuel tank are carefully matched. You should therefore always filI the chain oil tank and fuel tank at the same time. Never start the machine: 1 If you have spilt fuel or chain oiI on the machine. Wipe off the spilIage and aIIow remaining fuel to evaporate. 2 If you have spilt fuel on yourself or your clothes, change your ciothes. Wash any part of your body that has come in contact with fuel. Use soap and water. 3 If the machine is leaking fuel. Check regularly for leaks from the fuel cap and fuel lines. Transport and storage Always store the chain saw and fueI 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 oi! tanks should be emptied. Ask where you can dispose of waste fuel and chain oil at your local gas station. Ensure the machine is cleaned and that a complete service is carried out before long-term storage. The bar guard must always be fitted to the cutting attachment when the machine is being transported or in storage, in order to prevent accident contact with the sharp chain. Even a non-moving chain can cause serious cuts to yourself or persons you bump into with an exposed chain, Long-term storage Empty the fuel/oil tanks in a welI ventilated area. Store the fuel in approved cans in a safe place. Fit the bar guard. Clean the machine. See instructions under the heading Maintenance schedule. 18 - English STARTING AND STOPPING Starting and stopping WARNING! Warm engine Note the following before starting: Use the same procedure as for starting a cold engine but without setting the choke control in the choke position, The correct choke/start throttle setting is obtained by moving the choke control to the choke position and then pushing it in again= The chain brake musl oe engaged when the chain saw is started to reduce the chance of contact with the moving starting. chain during Never start a chain saw untees the bar, chain and atl covers are fitted correctly. Otherwise the clutch can come loose and cause personal injuries, Place the machine on firm ground. Make sure you have a secure footing and that the chain cannot touch anything, Keep people and animals well away from the working area, Cold engine Starting: The chain brake should be activated when starting the chain saw, Activate the chain brake by pushing the front hand guard forwards= ignition; choke (A): Set the choke controI in the choke position, This should automatically set the stop switch to the start position= Start throttle: The correct choke/start throttle setting is obtained by moving the control to the choke position, Air purge (B): Press the air purge repeatedly until fue! begins to fill the bulb=The bulb need not be completely filled= Decompression valve (C): 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, Starting Grip the front handle with your Ieft hand, Hold the chain saw on the ground by placing your right foot through the rear handle, PulI the starter handle with your right hand and pull out the starter cord slowiy until you feel a resistance (as the starter pawls engage) then pulI firmly and rapidly=Never wrap the starter cord around your hand As the chain brake is still activated the engine must return to idling speed as soon as possibie by disengaging the throttel latch in order to avoid unnecessery wear on the clutch assembly= Push in the choke control as soon as the engine fire and make repeated starting attempts, Immediately press and release the throttle when the engine starts, That will disengage the throttle latch= CAUTION! Do not pulI the starter cord a!I the way out and do not let go of the starter handle when the cord is fully extended, This can damage the machine, English - 19 STARTING AND STOPPING Note! PutI the front hand guard towards the front handle. The chain brake is now disengaged. "Yoursaw is ready for use. Never start a chain saw unless the bar, chain and alI covers are fitted correctly'. See instructions under the heading Assembly. Without a bar and chain attached to the chain saw the clutch can come loose and cause serious iniury. The chain brake should be activated when starting. Se instructions under the heading Start and stop. Do not drop start. This method is very dangerous because you may lose control of the saw. Never start the machine indoors, Exhaust fumes can be dangerous if inhaled. Observe your surroundings and make sure that there is no risk of people or animals coming into contact with the cutting equipment. 20 - English Always hold the saw with both hands. The right hand should be on the rear handle, and the Ieft hand on the front handle. AII people, whether right or left handed, should use this grip. Use a firm grip with thumbs and fingers encircling the chain saw handles. Stopping Stop the engine by switching off the ignition. WORKmNG TECHNmQUES Before use: Basic 1 5 safety rules Look around you: To ensure that peopIe, animals or other things cannot affect your control of the machine, To make sure that none of the above might come within reach of your saw or be iniured by failing trees, 1 9 t 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 lock works correctly and is not damaged, 4 Check that the stop switch works correctly and is not damaged, 5 Check that aII handles are free from oil, 6 Check that the anti vibration system works and is not damaged, 7 Check that the muffler is securely attached and not damaged, 8 Check that alI parts of the chain saw are tightened correctly and that they are not damaged or missing, 9 Check that the chain catcher is in place and not damaged, 10 Check the chain tension, General working CAUTION! Foilow the instructions above, but do not use a chain saw in a situation where you cannot caII for help in case of an accident, 2 Do not use the machine in bad weather, such as dense fog, heavy rain, strong wind, intense cold, etc, Working in bad weather is tiring and often brings added risks, such as icy ground, unpredictable felling direction, etc, 3 Take great care when removing small branches and avoid cutting bushes (i,e, cutting many small branches at the same time), Small branches can be grabbed by the chain and thrown back at you, causing serious iniury, instructions IMPORTANT! This section describes basic safety rules for using a chain saw, This information is never a substitute for professional skills and experience, If you get into a situation where you feel unsafe, stop and seek expert advice, Contact your chain saw dealer, service agent or an experienced chain saw user, Do not attempt any task that you are not sure you can handle! Make sure you can move and stand safely, Check the area around you for possible obstacles (roots, rocks, branches, ditches, etc,) in case you have to move suddenly, Take great care when working on sloping ground, Before using a chain saw you must understand the effects of kickback and how to avoid them, See instructions under the heading How to avoid kickback, Before using a chain saw you must understand the difference between cutting with the top and bottom edges of the bar, See instructions under the headings How to avoid kickback and Machine's safety equipment, Wear personal protective equipment, See instructions under the heading Personai protective equipment, Take great care when cutting a tree that is under tension, A tree that is under tension may spring back to its norma! position before or after being cut, If you position yourself English - 21 WOF{KmNGTECHNmQUES incorrectly or make the cut in the wrong place the tree may hit you or the machine and cause you to lose control. Both situations can cause serious personal injury. 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. Before moving your chain saw switch off the engine and lock the chain using the chain brake. Carry the chain saw with the bar and chain pointing backwards. Fit a guard to the bar before transporting the chain saw or carrying it for any distance. Have control over the workpiece. If the pieces you intend to cut are small and light, they can jam in the saw chain and be thrown towards you. Even if this does not need to be a danger, you may be surprised and lose controi of the saw. Never saw stacked logs or branches without first separating them. Only saw one log or one piece at a time. Remove the cut pieces to keep your working area safe. Never use the chain eaw above ehoumder height and avoid cutting with the tip of the bar. Never use the chain saw one-handed! When you put the chain saw on the ground, lock the saw chain using the chain brake and ensure you have a constant view of the machine. Switch the engine off before leaving your chain saw for any length of time. General rules If you understand what kickback is and how it happens then you can reduce or eliminate the element of surprise. By being prepared you reduce the risk. Kickback is usually quite mild, but it can sometimes be very sudden and violent. 5 In order to keep control of your saw, always maintain a firm foothold. Never work on a ladder, in a tree or on any other insecure support. 6 Always use a fast cutting speed, i.e. full throttle. Always hold the chain saw firmly with your right hand on the rear handle and your left hand on the front handle. Wrap your fingers and thumbs around the bandies. You shouId use this grip whether you are right-handed or bfthanded. This grip minimizes the effect of kickback and lets you keep the chain saw under control. Do not let go of the handmee! 22 - English WOF{KmNGTECHNmQUES Take great care when you cut with the top edge of the bar, i.e. when cutting from the underside of the object. This is known as cutting with a pushing chain. The chain tries to push the chain saw back towards the user. Hfthe saw chain is jamming, the saw may be pushed back at you. Terms Cutting = General term for cutting through wood. Limbing = Cutting branches off a felled tree. Splitting = When the obiect you are cutting breaks off before the cut is complete. There are five important consider before making factors a cut: you should 1 Make sure the cutting equipment will not jam in the cut. 2 Make sure the object you are cutting will not split. Unless the user resists this pushing force there is a risk that the chain saw will move so far backwards that only the kickback zone of the bar is in contact with the tree, which can lead to a kickback. Make sure the chain will not strike the ground or any other object during or after cutting. Cutting with the bottom edge of the bar, i.e. from the top of the object downwards, is known as cutting with a pulling chain. Hnthis case the chain saw pulls itself towards the tree and the front edge of the chain saw body rests naturally on the trunk when cutting. Cutting with a pulling chain gives the operator better control over the chain saw and the position of the kickback zone. 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. Basic cutting technique Z 'y I 4 Hsthere a risk of kickback? 5 Do the conditions and surrounding terrain affect how safely you can stand and move about? Two factors decide whether the chain will iam or the obiect that you are cutting will split: the first is how the object is supported before and after cutting, and the second is whether it is in tension. Hnmost cases you can avoid these problems by cutting in two stages; from the top and from the bottom.You need to support the object so that it will not trap the chain or split during cutting. _tHMPORTANT!Hfthe chain jams in the cut: stop the engine__ General Always use full throttle when cutting! Don't try to pull the chain saw free. Hfyou do you may be injured by the chain when the chain saw suddenly breaks f_e the chain saw. Reduce the speed to idle after every cut (running the engine for too Iong at full throttle without any load, i.e. without any resistance from the chain during cutting, can lead to serious engine damage). Cutting from above = Cutting with a pulling chain. Cutting from below = Cutting with pushing chain. Cutting with a pushing chain increases the risk of kickback. See instructions under the heading How to avoid kickback. English - 23 WOF{KmNGTECHNIQUES The following instructions describe how to handle the common situations you are likely to encounter when using a chain saw. If it is possible (can you turn the log?) stop cutting about 2/3 of the way through the log. Limbing When Iimbing thick branches you should use the same approach as for cutting. Cut difficult branches piece by piece. Turn the log and finish the cut from the opposite The log is supported will split. side, at one end. There is a high risk that it Cutting Start by cutting from below (about 1/3 of the way through). wh_ue or fatal injury. If you have a pile of logs, each log you attempt to cut should be removed from the piIe, placed on a saw horse or runners and cut individually. Remove the cut pieces from the cutting area. By leaving them in the cutting area, you increase the risk for inadvertently getting a kickback, as well as increasing the risk of losing your balance while working. Finish by cutting from above so that the two cuts meet. The log is supported the chain will iam. at both ends. There is a high risk that Start by cutting from above (about 1/3 of the way through). The log is raying on the ground. There is little risk of the chain iamming or the obiect splitting. However there is a risk that the chain will touch the ground when you finish the cut. Cut all the way through the log from above. Avoid letting the chain touch the ground as you finish the cut. Maintain full throttle but be prepared for what might happen. 24 - English Finish by cutting from below so that the two cuts meet. WORKING TECHNIQUES Tree felling technique The main point to avoid is letting the tree fail onto another tree, It is very dangerous to remove a trapped tree and there is high accident risk, See instructions under the heading Freeing a tree that has fallen badly, IMPORTANT! takesofachain lot of saws experience fellfell a tree Inexperienced Itusers should tonot trees, Do _ n__evel! Safe distance The safe distance between a tree that is to be felled and anyone else working nearby is at least 2 1/2 tree lengths, Make sure that no-one else is in this "risk zone" before or during felling. _ IMPORTANT! During critical felling operations, hearing I protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard, Felling direction The aim is to fell the tree in a position where you can limb and cross-cut the log as easily as possible, You want it to fall in a location where you can stand and move about safely, Clearing the trunk and preparing your retreat DeIimb 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, Once you have decided which way you want the tree to fall you must iudge which way the tree would fail naturally, Several factors affect this: Lean of the tree Bend Wind direction Arrangement of branches Weight of snow Obstacles within the reach of the tree: for example, other trees, power lines, roads and buildings, Look for signs of damage and rot in the stem, this makes it more probably that the tree will break and start to fail before you expect it to, Remove any undergrowth from the base of the tree and check the area for obstacles (stones, branches, holes, etc,) so that you have a cIear path of retreat when the tree starts to fall, Your path of retreat should be roughly 135 degrees away from the intended felling direction, You may find you are forced to let the tree fall in its natural direction because it is impossible or dangerous to try to make it fall in the direction you first intended, Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling, English - 25 WOFIKmNG TECHNmQUES Felling Felling cut The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Stand on the left side of the tree and cut on the pulI stroke. _ebat mength of your Make the felling cut about 3-5 cm (1.5-2 inches) above the bottom directional cut. Felling is done using three cuts. First you make the directional cuts, which consist of the top cut and the bottom cut, then you finish with the feIIing cut. By placing these cuts correctly you can control the felling direction very accurately. [}irectional cuts To make the directionaI cuts you begin with the top cut. Stand to the right of the tree and cut on the pull stroke. Finish the felIing cut paraIIel with the directional cut Iine so that the distance between them is at least 1/10 of the trunk diameter. The uncut section of the trunk is called the felling hinge. } I [ I I Next make the bottom cut so that it finishes exactly at the end of the top cut. The felling hinge controls the direction that the tree falls in. The directional cuts should run 1/4 of the diameter through the trunk and the angle between the top cut and bottom cut All controI over the felling direction is Iost if the feiIing hinge is too narrow or non-existent, or if the directionaI cuts and felling cut are badly pIaced. The Iine where the two cuts meet is called the directional cut line. This line shouId be perfectly horizontal and at right angles (90 °) to the chosen felling direction. 26 - English When the felling cut and directional cut are comptete the tree should start to fail by itself or with the aid of a felling wedge or breaking bar. WOF{KmNGTECHNmQUES We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the felling cut and directional cuts with single cutting strokes. See instructions under the heading Technical data section to find out which lengths of bar are recommended for your saw. The safest method is to use a winch. Tractor-mounted Portable There are methods for felling trees with a diameter larger than the bar length. However these methods involve a much greater risk that the kickback zone of the bar will come into contact with the tree. Freeing Freeing a tree that has fallen a "trapped badly 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. Cutting trees and branches that are in tension Preparations: Work out which side is in tension and where the point of maximum tension is (i.e. where it would break if it was bent even more). Decide which is the safest way to release the tension and whether you are able to do it safely. In complicated situations the only safe method is to put aside your chain saw and use a winch. General advice: Position yourself so that you will be clear of the tree or branch when the tension is reIeased. Make one or more cuts at or near the point of maximum tension. Make as many cuts of sufficient depth as necessary to reduce the tension and make the tree or branch break at the point of maximum tension. Never work in the risk zone of the hanging trapped tree. Never cut straight tension! through a tree or branch that is in If you must cut across tree/limb, make two to three cuts, one inch apart, one to two inches deep. Continue to cut deeper until tree/limb bends and tension is released. Cut tree/limb from outside the bend, after tension has been released. English - 27 WORKING TECHNIQUES How to avoid kickback Limbing _de What is kickback? The word kickback is used to describe the sudden reaction that causes the chain saw and bar to iump off an object when the upper quadrant of the tip of the bar, known as the kickback zone, touches an obiect. Kickback aIways occurs in the cutting pIans of the bar. Normally the chain saw and bar are thrown backwards and upwards towards the user. However, the chain saw may move in a different direction depending on the way it was being used when the kickback zone of the bar touched the object. bar. B_remely cautioUS and avoid contacting the log, other limbs o r objects w!th the nose of the guide bar, Be e×tremely cautious of I robe under tensionlTbey can spring back toward you _ng in injury. Make sure that you can stand and move about safely=Work on the Ieft side of the trunk= Work as c!ose as possible to the chain saw for maximum controI. If possible, let the weight of the chain saw rest on the trunk. Keep the trunk between you and the chain saw as you move along the trunk. Cutting the trunk into togs See instructions under the heading Basic cutting technique, Kickback only occurs if the kickback zone of the bar touches an object= 28 - English GeneraW Basic The user must only carry out the maintenance and service work described in this manual. More extensive work must be carried out by an authorised service workshop. The basic carburetor settings are adiusted during testing at the factory. Avoid running at a too high speed for extended periods during the first 10 hours. Carburetor settings and running in CAUTION! tf the chain rotates while idling theT-ecrew must be turned anti-cmockwiee until the chain stops. adjustment Due to existing environmental and emissions legislation your chain saw is equipped with movement Iimiters on the carburetor adjuster screws. These limit the adjustment possibilities to a maximum of a 1/2 turn. Rec. idle speed: 2700 rpm Fine adjustment When the machine has been "run-in" the carburetor should be finely adiusted. The fine adjustment should be carried out by a qualified person. First adjust the L-iet, then the idling screw T and then the H-jet. Conditions Before any adiustments are made the air filter should be clean and the cylinder cover fitted. Adjusting the carburetor while a dirty air filter is in use will result in a leaner mixture next time the filter is cleaned. This can give rise to serious engine damage. Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions. Function Do not attempt to adjust the L and H jets beyond either stop as this could cause damage. The carburetor governs the engine's speed via the throttle controi. Air and fuel are mixed in the carburetor. The air/ fuel mixture is adjustable. Correct adjustment is essential to get the best performance from the machine. Now start the machine according to the starting instructions and let it warm up for 10 minutes. Place the machine on a fiat surface so that the bar points away from you and so that the bar and chain do not come into contact with the surface or other objects. The setting of the carburetor means that the engine is adapted to local conditions, for example, the climate, altitude, fuel and the type of 2-stroke oil. The carburetor has three adjustment controls: Low speed jet L Turn the low speed iet L clockwise until it stops. If the engine acceIerates poorly or idIes unevenIy, turn the Iow speed jet L anticlockwise until good acceleration and idIing are achieved. L = Low speed iet H = High speed iet T = Idle adjustment screw L The L and H-iets are used to adiust the supply of fuel to match the rate that air is admitted, which is controlled with the throttle. If they are screwed clockwise the air/fuel ratio becomes leaner (less fuel) and if they are turned anticlockwise the ratio becomes richer (more fuel). A lean mixture gives a higher engine speed and a rich mixture gives a lower engine speed. Fine adjustment of the idling speed T Adjust the idle speed with the T-screw. If it is necessary to readiust, turn the T-screw ciockwise while the engine is running, until the chain starts to rotate. Then turn counter-clockwise until the chain stops. A correctly adjusted idle speed setting occurs when the engine runs smoothly in every position. It should also be good margin to the rpm when the chain starts to rotate. I th se.!he saw until it h_perly eo! o.ain adjusted or The T-screw regulates the throttle setting at idle speed. If the T-screw is turned clockwise this gives a higher idle speed; turning it anti-clockwise gives a lower idle speed. English - 29 High speed Checking jet H At the factory the engine is adjusted at sea level When working at a high amtitude or in different weather conditions, temperatures and atmospheric humidity_ it may be necessary to make minor adjustments to the h{gh speed jet. CAUTION! if the high speed jet is screwed may damage the pieton/cyminder. the front hand guard Make sure the front hand guard is not damaged and that there are no visibIe defects such as cracks. in too far, it When test run at the factory, the high speed iet is set so that the engine satisfies the applicable Iega! requirements at the same time as achieving maximum performance. The carburetor's high speed jet is then locked using a limiter cap in the fuIIy screwed out position. The limiter cap limits the potentiaI to adjust the high speed jet to at most half a turn. Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cover. To adjust the carburetor correctly you should contact a mechanic with access to a rev counter. CAUTION! As the spark is cut off, the rev counter does not show speeds higher than 13600 rpm. Correctly adjusted carburetor When the carburetor is correctly adiusted the machine accelerates without hesitation and the machine 4-cycbs a little at max. speed, it is also important that the chain does not rotate at idle. If the L-jet is set too lean it may cause starting difficulties and poor acceleration. If the H-iet is set too lean the machine will have less power, poor acceleration and could suffer damage to the engine. Checking, maintaining and servicing chain saw safety equipment Checking the inertia brake release With the engine turned off, hold the chain saw over a stump or other firm obiect. Let go of the front handIe so that the bar drops towards the stump as the chain saw rotates around the rear handle. Note! AII servicing and repair work on the machine requires speciaI training. This is especially true of the machine's safety equipment. If your machine fails any of the checks described below we recommend you to contact our servicing deaIer= Chain Checking brake and front brake band hand guard wear When the bar hits the stump the brake should Brush off any wood dust. resin and dirt from the chain brake and clutch drum. Dirt and wear can impair operation of the brake, Regularly check that the brake band is at least 0.6 mm (0,024 inch) thick at its thinnest point. 30 - English be apptiedo Checkingthe braketrigger PIace the chain saw on firm ground and start it. Make sure the chain does not touch the ground or any other obiect. See the instructions under the heading Start and stop. Check that the throttle control and throttle Iock move freely and that the return springs work properly. Start the chain saw and apply ful! 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 carburetor idle adiustment. Chain catcher Grasp the chain saw firmly, wrapping your fingers and thumbs around the handles= Check that the chain catcher is not damaged and is firmly attached to the body of the chain saw. Apply fulI throttle and activate the chain brake by tilting your left wrist forward onto the front hand guard. Do not let go of the front handle= The chain should stop immediatemy. Right Throttle _ock hand guard Check that the right hand guard is not damaged and that there are no visible defects, such as cracks. Make sure the throttle control is locked at the idie setting when the throttie lock is released. Vibration Press the throttle Iock and make sure it returns to its original position when you release it. damping system Regularly check the vibration damping units for cracks or deformation. Make sure the vibration damping units are securely attached to the engine unit and handle unit. English - 31 Never use a muffler if the spark arrestor or defective. Stop switch mesh is missing Start the engine and make sure the engine stops when you move the stop switch to the stop setting. \\ Muffler Never use a machine that has a faulty muffler. Regularly check that the muffler is securely attached to the machine. Some mufflers are equipped with a special spark arrestor mesh. If your machine has this type of muffier, you should clean the mesh at least once a week. This is best done with a wire brush. A blocked mesh wiII 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 wilI overheat and this will cause damage to the cylinder and piston. Never use a machine with a muffler that is in poor condition. 32 - English The muffler is designed to reduce the noise levei and to direct the exhaust gases away from the operator. The exhaust gases are hot and can contain sparks, which may cause fire if directed against dry and combustible material. Starter Tensioning the recoil spring Hook the starter cord in the notch in the puIley and turn the starter pulley about 2 turns clockwise. upARNiNG!When in the starter housing under istension the recoilit is spring wound and can, if handled carelessly, pop out and cause personal injury. Z_ Note! Check that the puIIey can be turned an additionaI 1/ 2 turn when the starter cord is pulled all the way out. Care must be exercised when replacing the return spring or the starter cord. Wear protective glasses and protective gloves. Changing a broken or worn starter cord Loosen the screws that hold the starter against the crankcase and remove the starter. Changing a broken recoil spring Lift off the puIIey. See instructions under heading Changing a broken or worn starter cord. Pull out the cord approx. 30 cm (12 inches) and hook it into the notch in the rim of the pulley. Release the recoil spring by letting the pulley rotate slowh backwards. Remove the recoil spring from inside the puIIey by tapping the pulley Iightly with its inside face downwards against a work bench or the like. If the spring pops out during fitting, wind it up again, working from the outside in towards centre. Lubricate the recoil spring with light oil. Fit the pulley and tension the recoil spring. ,iti Undo the screw in the centre of the pulley and remove the pulIey, hsert and fasten a new starter cord to the pulley. Wind approx. 3 turns of the starter cord onto the pulley. Connect the puIIey to the recoil spring so that the end of the spring engages in the pulley. Fit the screw in the center of the pulley, hsert the starter cord through the hole in the starter housing and the starter handle. Make a secure knot in the end of the starter cord. Fitting the starter To fit the starter, first pull out the starter cord and place the starter in position against the crankcase. Then slowiy release the starter cord so that the pulley engages with the pawIs. Fit and tighten the screws that hotd the starter. English - 33 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 carburetor adiustment. 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. When refitting make sure that the air filter seals tightly against the filter holder. Clean the filter by brushing or shaking it. These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties= If the machine is Iow on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.5 mm (0,020"). The spark plug should be replaced after about a month in operation or earlier if necessary. 0,5 mm The filter can be cleaned more thoroughly by washing it in water and detergent. An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with a new one at regular intervals= A damaged air filter must amways be replaced. Note! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder. Check that the spark plug is fitted with a suppressor. Lubricating the bar tip sprocket A HUSQVARNA chain saw can be equipped with different types of air filters according to working conditions, weather, season, etc. Contact your dealer for advice. Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease. 34 - English Needle bearing Wubrication Cooling system The clutch drum has a needle bearing on the output shaft. This needle bearing must be lubricated regularly (once a week). To keep the working temperature as low as possible the machine is equipped with a cooling system. When lubricating, remove the clutch cover by loosening the two bar nuts. Lay the saw on its side with the clutch drum upwards. 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). Lubrication involves engine oil dripping into the centre of the clutch drum as it rotates. Adjustment of the oil pump Adjustments are made by turning the screw using a screwdriver or combination spanner. The machine is supplied from the factory with the screw set to position 2. Turning the screw clockwise wilI reduce the oil flow and turning the screw anti-clockwise will increase the oil flow= Recommended The cooling system consists of: Clean the cooling system with a brush once a week, more often in demanding conditions. A dirty or blocked cooling system results in the machine overheating which causes damage to the piston and cylinder. "Air injection" centrifugal cleaning Centrifugal cleaning means the following: All air to the carburetor passes through the starter. Dirt and dust is pushed out by the cooling fan. settings: Bar 13"-15": Position 1 Bar 15"-18": Position 2 Bar 18"-20": Position 3 iMPORTANT! in order to maintain operation of the centrifugal cleaning system it must be regularly maintained. Clean the air intake to the starter, the fins on the flywheel, the space around the flywheel, inlet pipe and carburetor compartment. These recommendations apply to Husqvarna's chain oil, for other chain oils increase the oil flow by one step. English - 35 Winter use Running problems can occur when using the machine in the cold and snowy conditions caused by: Too low engine temperature. Icing of the air filter and carburetor. Special measures are therefore often required: Partly mask the air inlet on the starter to increase the working temperature of the engine. Temperature 0°C (32°F) or colder: The cylinder cover is designed so it can be adiusted for running in cold weather, so that preheated air from the cylinder can pass into the carburetor space preventing icing of the air filter, etc. Temperature -5°C (23°F) or colder: For running the machine in cold weather or powder snow, a special cover is available, which is mounted on the starter housing. This reduces the intake of coid air and prevents large amounts of snow from being sucked in. CAUTION! if the special winterising kit has been fitted or any measures have been taken to increase the temperature these changes must be reversed before the machine is used in normal temperature conditions. Otherwise there is a risk of overheating, resulting in severe damage to the engine. iMPORTANT! Any maintenance other than that described in this manual must be carried out by your servicing dealer (retailer). 36 - English Maintenance schedule The following is a list of the maintenance Maintenance section= that must be performed on the machine. Most of the items are described in the Daimy maintenance Clean the outside of the machine, Check that the components of the throttle control work safely. (Throttle lock and throttle controL) WeekBy maintenance On chain saws without a catalytic converter, check the cooling system weekly, MontHy maintenance 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= Check the starter, starter cord and return spring, Check the clutch centre, clutch drum and clutch spring for wear. Check that the vibration damping elements are not damaged, Clean the spark plug. Check that the electrode gap is 0.5 mm (0,020 inch). The bar should be turned daily for more even wear. Check the lubrication hole in the bar, to be sure it is not ciogged. Clean the bar groove. If the bar has a sprocket tip, this should be lubricated= Lubricate the clutch drum bearing. Clean the outside of the carburetor. Check that the bar and chain are getting sufficient oiI= File off any burrs from the edges of the bar= Check fueI hose for cracks or other damage. Change if necessary. Clean or replace the spark arrestor mesh on the muffler. Empty the fuel tank and clean the inside. and condition. Check the drive sprocket for excessive wear and replace if necessary. Clean the carburetor compartment. Empty the oil tank and clean the inside. Clean the starter units air intake. Clean the air fiIter. Replace if necessary. Check atI cables and connections. Clean the chain brake and check that it operates safely. Make sure that the chain catcher is undamaged, and replace it if necessary. Check the saw chain with regard to visible cracks in the rivets and links, whether the saw chain is stiff or whether the rivets and links are abnormally worn. Replace if necessary. Sharpen the chain and check its tension Check that nuts and screws are tight. Check that the stop switch works correctly= Check that there are no fueI leaks from the engine, tank or fuel lines= On chain saws with a catalytic converter, check the cooling system daily. English - 37 TECHNICAL Technical DATA data 455 460 3,38/55,5 3,68/60,3 Cylinder bore, inch/mm 1,85/47 1,93/49 Stroke, inch/mm 1,26/32 1,26/32 Idte speed, rpm 2700 Power, kW/hp @ rpm 3,5/2,6 Engine Cylinder displacement, Ignition cu.in/cm 3 2700 @ 9000 3,7/2,7 @ 9000 system Manufacturer of ignition system SEM SEM Type of ignition system CD CD Spark plug NGK BPMR 7A/ Champion RCJ 7Y NGK BPMR 7A/ Champion RCJ 7Y Electrode gap, inch/mm 0,02/0,5 0,02/0,5 Manufacturer of carburetor Walbro VVaIbro Carburetor type WTA WTA Fuel tank capacity, US pint/Iitre 0,93/0,44 0,93/0,44 Oil pump capacity at 9,000 rpm, ml/min 11,5 11,5 Oil tank capacity, US pint/litre 0,68/0,32 0,68/0,32 Type of oil pump Automatic Automatic 12,8/5,8 12,8/5,8 Standard bar length, inch/cm 13/33 13/33 Recommended 13-20/33-50 13-20/33-50 Usable cutting [ength, inches/cm 12-19/31-49 12-19/31-49 Pitch, inch/mm 0,325/8,25 0,325/8,25 3/8 / 9,52 3/8 / 9,52 0,050/1,3 0,050/1,3 0,058/1,5 0,058/1,5 Fuemand lubrication system Weight Chain saw without bar or chain, empty tanks, Ib/kg Chain/bar bar lengths, inch/cm Thickness of drive links, inch/mm 0,063/1,6 0,063/1,6 Drive sprocket type/teeth Spur/7 Spur/7 Chain speed at max= power, m/sec 20,0 20,0 38 - English TECHNICAL Recommended origina_ and replacement DATA bar and chain combinations Following is a list of recommended cutting equipment for the Husqvarna chain saw model 455 Rancher 460. The combinations of power head, bar and chain have been tested and found to be in accordance with the kickback and vibration requirements of ANSi B 175.1-2000. The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the corresponding maximum nose radius of a solid bar. The following list is the chain saw manufacturers achieve kickback reduction. recommendations. There may be other combinations available, which will also As we are Iisting the maximum guide bar nose radius, you may use a guide bar with smaller nose radius than in our Iist. For guide bars of the same length, ati sprocket-nose guide bars of the same pitch and having the same number of sprocket teeth may be considered to have equivalent kickback energy. A hard nose bar having the same length and nose radius as a sprocket-nose bar may be considered to have equivalent or less kickback energy than the sprocket-nose bar. Bar and chain combinations Chain saw modei Husqvarna 455 Rancher 460 met the kickback performance requirements of ANSI B 175.1-2000 when tested with the combinations of bars and saw chains Iisted below. The saw chains Husqvarna H30, H80 and H81 are also cIassified as a Nowkickback saw chain since it met the requirements for low kickback saw chain outlined in ANSI B 175.1-2000. We recommend to use onty the Iisted combinations of bars and chains for chain saw model Husqvarna 455 Rancher. Other chain saw models may not meet the kickback requirements when equipped with the listed bar and chain combinations. Chain Bar Length, inch Pitch, 13 inch Thickness of drive links, inch/ram Ma×, nose radius Drive Type 0,325 10T 56 15 0,325 10T 64 16 0,325 18 1,3 10T 66 Husqvarna H30 0,325 10T 72 2O 0,325 10T 80 13 0,325 10T 56 15 0,325 10T 64 16 0,325 18 0,325 10T 72 2O 0,325 12T 80 15 3/8 11T 56 16 3/8 11T 1,5 10T 1,5 18 3/8 11T 2O 3/8 11T link count 66 Husqvarna H25 60 Husqvarna H42 68 72 inch/rnm inch/ram H30 3/15 / 4,8 85 ° 30 ° 10 ° 0,025 / 0,65 5056981=00 5056981=08 H25 3/16 / 4,8 85 ° 30 ° 10 ° 0,085 / 0,65 5056981=00 5056981=09 H42 7/32 / 5,5 50 ° 25 ° 10 ° 0,025 / 0,55 5056981 =01 5056981 =07 English - 39 FEDERAL EMiSSiON CONTROL WARRANTY YOUR WARRANTY RIGHTS AND The EPA (The US Environmental Protection Agency), Environment Canada and Husqvarna Forest & Garden are pleased to explain the emissions control system warranty on your 2001 and Iater small nonroad engine= in U=S=and Canada, new small nonroad engines must be designed, built and equipped to meet the federal stringent anti-smog standards. Husqvarna Forest & Garden must warrant the emission control system on your small nonroad engine for the period of time listed below provided there has been no abuse, neglect or improper maintenance of your unit=Your emission control system includes Parts such as the carburetor and the ignition system. Where a warrantable condition exists, Husqvarna Forest & Garden will repair your small nonroad engine at no cost to you= Expenses covered under warranty include diagnosis, parts and labor= MANUFACTURER'S COVERAGE WARRANTY The 2001 and later smalI nonroad engines are warranted for two years= if any emission related part on you engine (as listed above) is defective, the part will be repaired or replaced by Husqvarna Forest & Garden= OWNER'S WARRANTY RESPONSIBILmTIES WARRANTY COMMENCEMENT WHAT IS COVERED REPAIR OR REPLACEMENT OF PARTS Repair or replacement of any warranted part will be performed at no charge to the owner at an approved Husqvarna Forest & Garden servicing dealer= If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or caII Husqvarna Forest & Garden at 1-800-487-5963= WARRANTY PERIOD Any warranted part which is not scheduled for replacement as required maintenance, or which is scheduled only for regular inspection to the effect of "repair or replace as necessary" shall be warranted for 2 years. Any warranted part which is scheduled for replacement as required maintenance shall be warranted for the period of time up to the first scheduled replacement point for that part= DIAGNOSIS The owner shall not be charged for diagnostic labor which leads to the determination that a warranted part is defective, if the diagnostic work is performed at an approved Husqvarna Forest & Garden servicing dealer= CONSEQUENTIAL DAMAGES Husqvarna Forest & Garden may be liable for damages to other engine components caused by the failure of a warranted part still under warranty'= WHAT IS NOT COVERED All failures caused by abuse, neglect or improper maintenance are not covered= ADD -ON OR MODIFIED As the small nonroad engine owner, you are responsible for the performance of the required maintenance iisted in your Operator's Manual= Husqvarna Forest & Garden recommends that you retain all receipts covering maintenance on your smalI nonroad engine, but Husqvarna Forest & Garden cannot deny warranty solely for the Iack of receipts or for your failure to ensure the performance of all scheduled maintenance= As the small nonroad engine owner, you should, however, be aware that Husqvarna Forest & Garden may deny you warranty coverage if your small nonroad engine or a part of it has failed due to abuse, neglect, improper maintenance, unapproved modifications or the use of parts not made or approved by the original equipment manufacturer= You are responsible for presenting your smalI nonroad engine to a Husqvarna Forest & Garden authorized servicing dealer as soon as a problem exists= The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days. if you have any questions regarding your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or calI Husqvarna Forest & Garden at 1-800-487-5963= PARTS The use of add-on or modified parts can be grounds for disallowing a warranty claim= Husqvarna Forest & Garden is not liable to cover failures of warranted parts caused by the use of add-on or modified parts= HOW TO FILE A CLAUM If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or call Husqvarna Forest & Garden at 1-800487-5963= WHERE TO GET WARRANTY SERWCE Warranty services or repairs shaII be provided at all Husqvarna Forest & Garden authorized servicing deaIers= MAUNTENANCE, REPLACEMENT REPAIR OF EMUSSmON-RELATED AND PARTS Any Husqvarna Forest & Garden approved replacement part used in the performance of any warranty maintenance or repairs on emission-related parts, will be provided without charge to the owner if the part is under warranty= DATE The warranty period begins on the date small nonroad engine is delivered= EMISSION LmST 1 LENGTH STATEMENT OF COVERAGE Husqvama Forest & Garden warrants to the initiaI owner and each subsequent purchaser that the engine is free from defects in materials and workmanship which cause the failure of a warranted part for a period of two years= CONTROL WARRANTY PARTS Carburetor and internal parts 2 Intake pipe, airfilter holder and carburetor bolts= 3 AirfiIter and fuelfilter covered up to maintenance schedule= 4 Spark Plug, covered up to maintenance 5 Ignition Module MAINTENANCE schedule STATEMENT The owner is responsible for the performance of all required maintenance, as defined in the operator's manual= 40 - English AMERICAN Safety precautions STANDARD SAFETY PRECAUTIONS for chain saw Other safety precautions users (ANSI B 175.1-2000 Annex C Kickback Z_ safety precautions nose or tip of the g uide baroccur touches ARNING! Kickback may whenanthe objecL or when the wood doses in and pinches the saw chain in the cut. Tip contact in some cases may cause a Ughtning fast reverse reaction, kicking the guide bar up and back towards the operator. Do not operate a chain saw when you are fatigued. Use safety footwear; snug-fitting clothing, protective gloves, and eye, hearing and head protection devices. Use caution when handling fuel= Move the chain saw at least 10 feet (3 m) from the fueling point before starting the engine. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator. Do not allow other persons to be near the chain saw when starting or cutting with the chain saw= Keep bystanders and animaIs out of the work area= Either of these reactions may cause you to lose contro_ of the saw which cou Id result in serious personal injury. Do not start cutting until you have a clear work area, secure footing and a pianned retreat path from the falIing tree= Do not remye×dusively upon the safety devices built into your saw. As a chain saw user, you shoutd take several steps to keep your cutting jobs free from accident or injury. With a basic understanding of kickback, you can reduce or eliminate the element of surprise= Sudden surprise contributes to accidents. Keep a good firm grip on the saw with both hands, the right hand on the rear handIe, and the left hand on the front handIe, when the engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles. A firm grip wi!l help you reduce kickback and maintain control of the saw. Don't let go= Keep a!l parts of your body away from the saw chain when the engine is running= Before you start the engine, make sure that the saw chain is not contacting anything= Carry the chain saw with the engine stopped, the guide bar and saw chain to the rear, and the muffler away from your body= Do not operate a chain saw that is damaged, improperly adjusted, or not completely and securely assembled. Be sure that the saw chain stops moving when the throttle control trigger is released= Shut off the engine before setting the chain saw down. Use extreme caution when cutting small size brush and saplings because slender materiaI may catch the saw chain and be whipped toward you or pull you off balance. Make sure that the area in which you are cutting is free from obstacles. Do not let the nose of the guide bar contact a Iog, branch, or any other obstacle which could be hit while you are operating the saw= When cutting a Iimb that is under tension be aIert for springback so that you wil! not be struck when the tension in the wood fibers is released. Cut at high engine speeds= Keep handles dry, dean and free of oil or fuel mixture= Do not overreach or cut above shoulder height. Operate the chain saw onIy in weII-ventilated areas= Follow manufacturer's sharpening and maintenance instructions for the saw chain= Do not operate a chain saw in a tree unless you have been specifically trained to do so= Only use repIacement bars and chains specified by the manufacturer or the equivalent= Do not operate a chain saw above shoulder height. All chain saw service, other than the items listed in the operatoCs/owner's safety and maintenance instructions, should be performed by competent chain saw service personnel= (For exampIe, if improper toots are used to remove the fiywheeI or if an improper tool is used to hotd the flywheel in order to remove the clutch, structural damage to the flywheel could occur and subsequently cause the flywheel to burst=) When transporting your chain saw, use the appropriate guide bar guard. Note: This Annex is intended primarily for the consumer or occasional user. English - 41 It 1140247°95 2005o04o19
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