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Husqvarna 235 Xtorq Manual

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    GENERAL SAFETY PRECAUTIONS 
    English – 11 
    1151508-26 Rev. 1 2009-07-08 
    General rules 
    •
     
    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.
     
     Too large a clearance increases the 
    risk of kickback.
    •
     
    Keep the chain properly tensioned!
     
     If the chain is 
    slack it is more likely to jump off and lead to increased 
    wear on the bar, chain and drive sprocket.
    •
     
    Keep cutting equipment well lubricated and 
    properly maintained!
     
      A poorly lubricated chain is 
    more likely to break and lead to increased wear on the 
    bar, chain and drive sprocket.
    Cutting equipment designed to reduce 
    kickback
    The only way to avoid kickback is to make sure that the 
    kickback zone of the bar never touches anything.
    By using cutting equipment with ”built-in” kickback 
    reduction and keeping the chain sharp and well-
    maintained you can reduce the effects of kickback.
    Bar
    The smaller the tip radius the lower the chance of kickback.
    Chain
    A chain is made up of a number of links, which are 
    available in standard and low-kickback versions.
    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.
    Bar
    • Length (inches/cm)
    • Number of teeth on bar tip sprocket (T). 
    • 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. • Bar groove width (inches/mm). The groove in the bar 
    must match the width of the chain drive links.
    • Chain oil hole and hole for chain tensioner. The bar must  be matched to the chain saw design.
    Chain
    • Chain pitch (inches)
    • Drive link width (mm/inches)
    • Number of drive links.
    Sharpening your chain and adjusting 
    depth gauge setting
    General information on sharpening cutting teeth
    • 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 will be very small. If the chain is very 
    blunt it will produce wood powder and no chips or 
    shavings.
    • A sharp chain eats its way through the wood and  produces long, thick chips or shavings.
    • 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). (7)
    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
    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 Technical data for 
    information about sharpening your chain.
    Sharpening cutting teeth
    To sharpen cutting teeth you will need a round file and a file 
    gauge. See instructions under the heading Technical 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.
    • 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 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 0.16 inch (4 mm) the chain is 
    worn out and should be replaced.  (8)
    General advice on adjusting depth gauge setting (7)
    • When you sharpen the cutting tooth (A) the depth gauge  setting (C) will decrease. To maintain optimal cutting 
    !
    WARNING! Faulty cutting equipment or 
    the wrong combination of bar and saw 
    chain increases the risk of kickback! 
    Only use the bar/saw chain combin-
    ations we recommend, and follow the 
    filing instructions. See instructions 
    under the heading Technical data.
    IMPORTANT! No saw chain design eliminates the 
    danger of kickback.
    !
    WARNING! Any contact with a rotating 
    saw chain can cause extremely serious 
    injuries.
    !
    WARNING! Always wear gloves, when 
    working with the chain, in order to 
    protect your hands from injury.
    !
    WARNING! Departure from the 
    sharpening instructions considerably 
    increases the risk of kickback. 
    						
    							GENERAL SAFETY PRECAUTIONS
    12 – English1151508-26 Rev. 1 2009-07-08
    performance the depth gauge (B) has to be filed down 
    to achieve the recommended depth gauge setting. See 
    instructions under the heading Technical data to find the 
    correct depth gauge setting for your particular chain.
    Adjustment 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 tool 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, 
    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.
    Tensioning the chain
    The more you use a chain the longer it becomes. It is 
    therefore important to adjust 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.  (9)
    • Release the knob by folding it out.  (10)
    • Turn the knob anti clockwise to loosen the bar cover.  (11)
    • Adjust the tension on the chain by turning the wheel  down (+) for tighter tension and up (-) to loosen the 
    tension. Lift tip of guide bar while adjusting tension.  (12)
    • Tighten the clutch cover by turning the knob clockwise  while lifting tip of bar. (13)
    • Fold the knob back in to lock the tensioning.  (14)
    Lubricating cutting equipment
    Chain oil
    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.
    Never use waste oil!  Using waste oil can be dangerous 
    to you and damage the machine and environment.
    Filling with chain oil
    • All our chain saws have an automatic chain lubrication  system. On some models the oil flow is also adjustable.
    • The saw chain oil tank and the fuel tank are designed so  that the fuel runs out before the saw chain oil.
    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 adjust 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.
    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.
    If the chain lubrication is not working:
    • Check that the oil channel in the bar is not obstructed.  Clean if necessary.
    • Check that the groove in the edge of the bar is clean.  Clean if necessary.
    • 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.
    If the chain lubrication system is still not working after 
    carrying out the above checks and associated measures 
    you should contact your servicing dealer.!
    WARNING! The risk of kickback is 
    increased if the depth gauge setting is 
    too large!
    !
    WARNING! A slack chain may jump off 
    the bar and cause serious or even fatal 
    injury.
    !
    WARNING! Always wear approved 
    protective gloves. Even a non-moving 
    chain can cause serious cuts to yourself 
    or persons you bump into with an 
    exposed chain.
    !
    WARNING! Poor lubrication of cutting 
    equipment may cause the chain to snap, 
    which could lead to serious, even fatal 
    injuries.
    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 
    jamming.  
    						
    							GENERAL SAFETY PRECAUTIONS / ASSEMBLY
    English – 131151508-26 Rev. 1 2009-07-08
    Chain drive sprocket
    The clutch drum is fitted with a Spur sprocket (the chain 
    sprocket is welded on the drum).
    Regularly check the degree of wear on the drive sprocket. 
    Replace if wear is excessive. Replace the drive sprocket 
    whenever you replace the chain.
    Checking wear on cutting equipment
    Check the chain daily for:
    • 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.
    When the length of the cutting teeth has worn down to only 
    0.16 inch (4 mm) 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.  (15)
    • Whether the groove in the bar has become badly worn.  Replace the bar if necessary.  (16)
    • 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.
    • To prolong the life of the bar you should turn it over daily.Fitting the bar and chain
    Check that the chain brake is in disengaged position by 
    moving the front hand guard towards the front handle.
    Remove the knob and remove the clutch cover (chain 
    brake). Take off the transportation ring (A).  (17)
    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. 
    (18)
    Make sure that the edges of the cutting links are facing 
    forward on the top edge of the bar.
    Fit the clutch cover (chain brake) and locate the chain 
    adjuster pin in the cut-out in the bar. Check that the drive 
    links of the chain fit correctly on the drive sprocket and that 
    the chain is in the groove on the bar. (19)
    Tension the chain by turning the wheel down (+). The chain 
    should be tensioned until it does not sag from the 
    underside of the bar. (12)
    The chain is correctly tensioned when it does not sag from 
    the underside of the bar, but can still be turned easily by 
    hand. Hold up the bar tip and tighten the bar knob by 
    turning the knob clockwise. (13)
    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.  (20)
    !
    WARNING! Most chain saw accidents 
    happen when the chain touches the 
    operator.
    Wear personal protective equipment. 
    See instructions under the heading 
    Personal protective equipment.
    Do not tackle any job that you feel 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 all the chain saw safety 
    features are working. See instructions 
    under the headings General working 
    instructions and General safety 
    precautions.
    !
    WARNING! Switch off the engine before 
    carrying out any checks or maintenance. 
    The stop switch automatically returns to 
    the start position. In order to prevent 
    unintentional starting, the spark plug 
    cap must be removed from the spark 
    plug when assembling, checking and/or 
    performing maintenance. 
    Always wear gloves, when working with 
    the chain, in order to protect your hands 
    from injury. 
    						
    							FUEL HANDLING
    14 – English1151508-26 Rev. 1 2009-07-08
    Fuel
    Note! The machine is equipped with a two-stroke engine 
    and must always be run using a mixture of gasoline and 
    two-stroke 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.
    Gasoline
    • Use good quality unleaded gasoline.• The lowest recommended octane grade is 87 ((RON+MON)/2). If you 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 result in serious engine damage.
    • When working with continuous high revs (e.g. limbing) a higher octane is recommended.
    Running-in
    Avoid running at a too high speed for extended periods 
    during the first 10 hours.
    Two-stroke oil
    • For best results and performance use HUSQVARNA  two-stroke engine oil, which is specially formulated for 
    our air-cooled two stroke-engines.
    • Never use two-stroke oil intended for water-cooled  engines, sometimes referred to as outboard oil (rated 
    TCW).
    • Never use oil intended for four-stroke engines.
    Mixing ratio
    1:50 (2%) for all engines.
    Mixing
    • Always mix the gasoline and oil in a clean container  intended for fuel.
    • 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.
    • 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 oil• We recommend the use of special oil (chain oil) with good adhesion characteristics.
    • Never use waste oil. This results in damage to the oil  pump, the bar and the chain.
    • It is important to use oil of the right grade (suitable  viscosity range) to suit the air temperature.
    • In temperatures below 32 °F (0°C) some oils become 
    too viscous. This can overload the oil pump and result in 
    damage to the oil pump components.
    • Contact your service agent when choosing chain oil.
    Fueling
    Clean the area around the fuel cap. Clean the fuel and chain 
    oil tanks regularly. The fuel filter must be replaced at least 
    once a year. Contamination in the tanks causes malfunction. 
    Make sure the fuel is well mixed by shaking the container 
    before refuelling. The capacities of the chain oil tank and fuel 
    tank are carefully matched. You should therefore always fill 
    the chain oil tank and fuel tank at the same time.
    Fuel safety
    • Never refuel the machine while the engine is running.
    • Make sure there is plenty of ventilation when refuelling  or mixing fuel (gasoline and 2-stroke oil).
    • Move the machine at least 10 ft (3 m) from the refuelling  point before starting it.
    • Never start the machine:
    1 If you have spilled fuel or chain oil on the machine. Wipe  off the spillage and allow remaining fuel to evaporate.
    2 If you have spilled fuel on yourself or your clothes,  change your clothes. 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.
    !
    WARNING! Always ensure there is 
    adequate ventilation when handling fuel.
    Gasoline, litre Two-stroke oil, 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
    !
    WARNING! Taking the following 
    precautions, will lessen the risk of fire:
    Do not smoke and do not place any hot 
    objects in the vicinity of fuel.
    Always stop the engine and let it cool for 
    a few minutes before refuelling.
    When refuelling, open the fuel cap 
    slowly so that any excess pressure is 
    released gently.
    Tighten the fuel cap carefully after 
    refuelling.
    Always move the machine away from the 
    refuelling area before starting.
    !
    WARNING! Fuel and fuel vapor are 
    highly flammable. Take care when 
    handling fuel and chain oil. Be aware of 
    the risks of fire, explosion and those 
    associated with inhalation.
    !
    WARNING! Never use a machine with 
    visible damage to the spark plug guard 
    and ignition cable. A risk of sparking 
    arises, which can cause a fire. 
    						
    							FUEL HANDLING / STARTING AND STOPPING
    English – 151151508-26 Rev. 1 2009-07-08
    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. 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 well 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.
    Starting and stopping
    Cold engine
    Starting:  The chain brake must be engaged when the 
    chain saw is started. Activate the brake by moving the front 
    hand guard forwards. (21)
    1.  Air purge:  Press the air purge repeatedly until fuel begins 
    to fill the bulb. The bulb need not be completely filled.  (24)
    2.  Choke: Pull the blue choke/fast idle lever out to the full 
    extent (to the  FULL CHOKE  position). When the choke/
    fast idle lever is pulled out to the full extent, the correct 
    throttle setting is set automatically. (22)
    Start throttle:  The correct choke/start throttle setting is 
    obtained by moving the control to the choke position.  (23)
    Starting
    Grip the front handle with your left hand. Hold the chain 
    saw on the ground by placing your right foot through the 
    rear handle.  3.  Pull the starter handle with your right hand and pull out 
    the starter cord slowly until you feel a resistance (as the 
    starter pawls engage) then pull firmly and rapidly. Never 
    twist the starter cord around your hand.
     (26)
    CAUTION!  Do not pull the star ter cord all the way out and 
    do not let go of the star ter handle when the cord is fully 
    extended. This can damage the machine.
    4.  Push  in the choke control to the ”1/2 choke” setting as 
    soon as the engine fires which can be heard through a 
    puff sound. (22)  
    5.  Keep on pulling  the cord powerfully until the engine 
    starts. (27)  Allow engine to warm for thirty seconds, then 
    squeeze throttle trigger to set normal idle.
    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 pressing the throttle trigger once. This prevents 
    unnecessary wear to the clutch, clutch drum and brake band.
    Note!  Reactivate the chain brake by pushing the front hand 
    guard back (marked ”PULL BACK TO RESET”) towards 
    the front handle. (28)  The chain saw is now ready for use. 
    There is a simplified start reminder with illustrations to 
    describe each step on the rear edge of the saw (A) .
    Warm engine
    Use the same procedure as for starting a cold engine but 
    without setting the choke control in the choke position. Set 
    the throttle to the star t position by pulling out the blue 
    choke control to the choke position and then pushing it in 
    again. (25)
    • Never start a chain saw unless the bar, chain and all 
    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 injury. (29)
    • The chain brake should be activated when starting. Se  instructions under the heading Star t and stop. Do not 
    drop start. This method is very dangerous because you 
    may lose control of the saw.  (30)
    • 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.
    • Always hold the saw with both hands. The right hand  should be on the rear handle, and the left hand on the 
    front handle. All people, whether right or left handed, 
    should use this grip. Use a firm grip with thumbs and 
    fingers encircling the chain saw handles. (31)
    Stopping
    Stop the engine by pressing down the stop button.  (32)
    !
    WARNING! Note the following before 
    starting:
    The chain brake must be engaged when 
    the chain saw is started to reduce the 
    chance of contact with the moving chain 
    during starting. 
    Never start a chain saw unless the bar, 
    chain and all 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.
    !
    WARNING! Long term inhalation of the 
    engine’s exhaust fumes, chain oil mist 
    and dust from sawdust can represent a 
    health risk. 
    						
    							WORKING TECHNIQUES
    16 – English1151508-26 Rev. 1 2009-07-08
    Before use: (33)
    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.
    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 all 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 instructions
    Basic safety rules
    1 Look around you:
    • To ensure that people, 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 injured by falling trees.
    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.
    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 
    injury.
    4 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 sud-
    denly. Take great care when working on sloping ground. 5 Take great care when cutting a tree that is under 
    tension. A tree that is under tension may spring back to 
    its normal position before or after being cut. If you 
    position yourself 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.
    6 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.
    7 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
    1 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.
    2 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 handles. You 
    should use this grip whether you are right-handed or 
    left-handed. This grip minimizes the 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. If the pieces you 
    intend to cut are small and light, they can jam in the saw 
    chain and be thrown towards you. This is not 
    necessarily dangerous in itself, but you may be 
    surprised and lose control 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.
    4 Never use the chain saw above shoulder height and 
    avoid cutting with the tip of the bar. Never use the 
    chain saw one-handed!   (34)
    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 suppor t. (35)
    6 Always use a fast cutting speed, i.e. full throttle.
    7 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. If the 
    saw chain is jamming, the saw may be pushed back at 
    you.
    8 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.  (36)
    Cutting with the bottom edge of the bar, i.e. from the top 
    of the object downwards, is known as cutting with a 
    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!
    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 Personal protective equipment. 
    						
    							WORKING TECHNIQUES
    English – 171151508-26 Rev. 1 2009-07-08
    pulling chain. In this 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.
    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.
    Basic cutting technique
    General
    • Always use full throttle when cutting!
    • Reduce the speed to idle after every cut (running the engine for too long 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.
    Terms
    Cutting = General term for cutting through wood.
    Limbing = Cutting branches off a felled tree.
    Splitting = When the object you are cutting breaks off 
    before the cut is complete.
    There are five important factors you should consider 
    before making a cut:
    1 Make sure the cutting equipment will not jam in the cut.
    2 Make sure the object you are cutting will not split.
    3 Make sure the chain will not strike the ground or any  other object during or after cutting.
    4 Is there 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 jam or the object 
    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.
    In most 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.
    The following instructions describe how to handle the 
    common situations you are likely to encounter when using 
    a chain saw. Limbing
    When limbing thick branches you should use the same 
    approach as for cutting.
    Cut difficult branches piece by piece.
    Cutting
    If you have a pile of logs, each log you attempt to cut should 
    be removed from the pile, 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.
    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.
    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.  (37)
    If it is possible (can you turn the log?) stop cutting about 2/
    3 of the way through the log.
    Turn the log and finish the cut from the opposite side.
    The log is supported at one end.  There is a high risk that 
    it will split.
    Start by cutting from below (about 1/3 of the way through).
    Finish by cutting from above so that the two cuts meet.
    The log is supported at both ends.  There is a high risk 
    that the chain will jam.
    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
    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. (38)
    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.
    Once you have decided which way you want the tree to fall 
    you must judge which way the tree would fall naturally.
    Several factors affect this:
    • Lean of the tree
    • Bend
    • Wind direction
    !
    WARNING! Never use a chain saw by 
    holding it with one hand. A chain saw is 
    not safely controlled with one hand. 
    Always have a secure, firm grip around 
    the handles with both hands.
    IMPORTANT! If the chain jams in the cut: stop the 
    engine! Don’t try to pull the chain saw free. If you do 
    you may be injured by the chain when the chain saw 
    suddenly breaks free. Use a lever to open up the cut 
    and free the chain saw.
    !
    WARNING! Never attempt to cut logs 
    while they are in a pile or when a couple 
    of logs are lying together. Such 
    procedures drastically increase the risk 
    of kickback which can result in a serious 
    or fatal injury.
    IMPORTANT! It takes a lot of experience to fell a tree. 
    Inexperienced users of chain saws should not fell trees. 
    Do not attempt any task beyond your experience level!  
    						
    							WORKING TECHNIQUES
    18 – English1151508-26 Rev. 1 2009-07-08
    • 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 star t to fall 
    before you expect it to. 
    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.
    The main point to avoid is letting the tree fall 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.
    Clearing the trunk and preparing your retreat
    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.  
    Remove any undergrowth from the base of the tree and 
    check the area for obstacles (stones, branches, holes, etc.) 
    so that you have a clear path of retreat when the tree star ts 
    to fall. Your path of retreat should be roughly 135 degrees 
    away from the intended felling direction.  (39)
    Felling
    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 felling cut. By placing these 
    cuts correctly you can control the felling direction very 
    accurately.
    Directional cuts
    To make the directional cuts you begin with the top cut. 
    Stand to the right of the tree and cut on the pull stroke.
    Next make the bottom cut so that it finishes exactly at the 
    end of the top cut. (40)
    The directional cuts should run 1/4 of the diameter through 
    the trunk and the angle between the top cut and bottom cut 
    should be 45 °.
    The line where the two cuts meet is called the directional 
    cut line. This line should be perfectly horizontal and at right 
    angles (90 °) to the chosen felling direction. (41)
    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 pull stroke. Make the felling cut about 1.5-2 inches (3-5 cm) above the 
    bottom directional cut. (42)
    Finish the felling cut parallel with the directional cut line 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.
    The felling hinge controls the direction that the tree falls in. 
    (43)
    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.
    When the felling cut and directional cut are complete the 
    tree should start to fall by itself or with the aid of a felling 
    wedge or breaking bar.
    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.
    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 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.
    The safest method is to use a winch.
    • Tractor-mounted
    • Portable
    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 released.
    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 cut straight through a tree or branch that is in 
    tension! 
    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.
    IMPORTANT! During critical felling operations, hearing 
    protectors should be lifted immediately when sawing is 
    completed so that sounds and warning signals can be 
    heard.
    !
    WARNING! Unless you have special 
    training we advise you not to fell trees 
    with a diameter larger than the bar 
    length of your saw! 
    						
    							WORKING TECHNIQUES / MAINTENANCE
    English – 191151508-26 Rev. 1 2009-07-08
    How to avoid kickback
    What is kickback?
    The word kickback is used to describe the sudden reaction 
    that causes the chain saw and bar to jump off an object 
    when the upper quadrant of the tip of the bar, known as the 
    kickback zone, touches an object. (44)
    Kickback always occurs in the cutting plane 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.
    Kickback only occurs if the kickback zone of the bar 
    touches an object.  (45)
    Limbing
    Make sure that you can stand and move about safely. Work 
    on the left side of the trunk. Work as close as possible to 
    the chain saw for maximum control. 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 logs
    See instructions under the heading Basic cutting 
    technique.
    General
    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.
    Carburetor adjustment
    Your Husqvarna product has been designed and 
    manufactured to specifications that reduce harmful 
    emissions.
    Function
    • The carburetor governs the engine’s speed via the  throttle control. 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.
    • 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.
    Basic settings and running in
    The basic carburetor settings are adjusted during testing at 
    the factory. Fine adjustment should be carried out by a 
    skilled technician.
    Rec. idle speed: See the Technical data section.
    Fine adjustment of the idling speed T
    Adjust the idle speed with the T-screw. If it is necessary to 
    re-adjust, turn the T-screw clockwise while the engine is 
    running, until the chain star ts 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 r pm 
    when the chain star ts to rotate.
    Checking, maintaining and 
    servicing chain saw safety 
    equipment
    Chain brake and front hand guard
    Checking brake band wear
    Brush off any wood dust, resin and dir t from the chain 
    brake and clutch drum. Dirt and wear can impair operation 
    of the brake. (46)
    Regularly check that the brake band is at least 0.024 inch 
    (0.6 mm) thick at its thinnest point.
    Checking the front hand guard
    Make sure the front hand guard is not damaged and that 
    there are no visible defects such as cracks.
    Move the front hand guard forwards and back to make sure 
    it moves freely and that it is securely anchored to the clutch 
    cover. (47)
    !
    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. It is vital you understand what 
    causes kickback and that you can avoid 
    it by taking care and using the right 
    working technique.
    !
    WARNING! A majority of kickback 
    accidents occur during limbing. Do not 
    use the kickback zone of the guide bar. 
    Be extremely cautious and avoid 
    contacting the log, other limbs or 
    objects with the nose of the guide bar. 
    Be extremely cautious of limbs under 
    tension. They can spring back toward 
    you and cause loss of control resulting 
    in injury.
    !
    WARNING! Contact your servicing 
    dealer, if the idle speed setting cannot be 
    adjusted so that the chain stops at idle. 
    Do not use the chain saw until it has 
    been properly adjusted or repaired.
    Note! All servicing and repair work on the machine 
    requires special 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 dealer. Any maintenance other 
    than that described in this manual must be carried out 
    by your servicing dealer (retailer).
    Switch off the engine and take off the ignition cable 
    before repairs or maintenance 
    						
    							MAINTENANCE
    20 – English1151508-26 Rev. 1 2009-07-08
    Checking the inertia brake release
    With the engine turned off, hold the chain saw over a stump 
    or other firm object. Let go of the front handle so that the 
    bar drops towards the stump as the chain saw rotates 
    around the rear handle.
    When the bar hits the stump the brake should be 
    applied. (48)
    Checking the brake trigger
    Place the chain saw on firm ground and start it. Make sure 
    the chain does not touch the ground or any other object. 
    See the instructions under the heading Star t and stop.
    Grasp the chain saw firmly, wrapping your fingers and 
    thumbs around the handles.
    Apply full 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 immediately.
    Throttle lockout
    • Make sure the throttle control is locked at the idle setting  when the throttle lockout is released.
    • Press the throttle lockout and make sure it returns to its  original position when you release it.
    • 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 
    carburetor idle adjustment.
    Chain catcher
    Check that the chain catcher is not damaged and is firmly 
    attached to the body of the chain saw.
    Right hand guard
    Check that the right hand guard is not damaged and that 
    there are no visible defects, such as cracks.
    Vibration 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.
    Stop switch
    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.
    Note: The spark arrestor screen (A) on this machine is 
    serviceable. (49)  The screen must be replaced if it is 
    damaged. If the screen 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. Never use a muffler if the spark arrestor 
    screen is missing or defective.
    For normal homeowner use, the muffler and spark 
    arresting screen will not require replacement. After 75 
    hours of use, we recommend that your muffler be replaced 
    by your authorized Husqvarna service dealer.
    Air filter
    The air filter must be regularly cleaned to remove dust and 
    dirt in order to avoid:
    • Carburettor malfunctions
    • Starting problems
    • Loss of engine power
    • Unnecessary wear to engine parts
    • Excessive fuel consumption.
    • Remove the air filter (3) after taking off the cylinder  cover, screw (1) and filter cover (2). When refitting make 
    sure that the air filter seals tightly against the filter 
    holder. Clean the filter by brushing or shaking it. (50)
    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 always be replaced.
    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.
    Spark plug
    The spark plug condition is influenced by:
    • Incorrect carburetor adjustment.
    • An incorrect fuel mixture (too much or incorrect type of  oil).
    • A dirty air filter.
    These factors cause deposits on the spark plug electrodes, 
    which may result in operating problems and starting 
    difficulties.
    If the machine is low 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 0.020 inch (0.5 
    mm). The spark plug should be replaced after about a 
    month in operation or earlier if necessary.
    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.
    Cooling system
    To keep the working temperature as low as possible the 
    machine is equipped with a cooling system. 
    The cooling system consists of:
    • Air intake on the starter.
    • Air guide plate.
    • Fins on the flywheel.
    • Cooling fins on the cylinder.
    • Cylinder cover (directs cold air over the cylinder).
    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. 
    						
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