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Husqvarna 125 L Service Manual

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    125C 125L 
    Operator’s Manual 
    Please read the operator’s manual carefully and make sure youunderstand the instructions before using the machine. 
    						
    							2
    CONTENTS
    ContentsCONTENTS
    Contents 2........................
    Note the following before starting 2....
    KEY TO SYMBOLS
    Symbols 3.........................
    SAFETY INSTRUCTIONS
    Personal protective equipment 4......
    Machine’s safety equipment 4........
    Cutting equipment 5.................
    Checking, maintaining and servicing
    the machine’s safety equipment 5.....
    General safety precautions 8.........
    Starting safety 8....................
    Fuel safety 8.......................
    Transporting and storage 9...........
    General working instructions 9........
    Basic safety rules 9.................
    Basic working techniques 9..........
    KNOW YOUR TRIMMER
    Know your trimmer 11................
    ASSEMBLY
    Fitting the loop handle 12.............
    Fitting the trimmer guard and
    trimmer head 12.....................
    FUEL HANDLING
    Fuel 13............................
    Fueling 13..........................
    STARTING AND STOPPING
    Check before starting 14..............
    Starting and stopping 14..............
    MAINTENANCE
    Carburetor 16.......................
    Muffler 16..........................
    Spark plug 17.......................
    Air filter 17..........................
    Bevel gear 17.......................
    Maintenance schedule 18.............
    TECHNICAL DATA
    Technical data 20....................
    YOUR WARRANTY RIGHTS AND
    OBLIGATIONS21 ...................
    EMISSION CONTROL
    WARRANTY STATEMENT22 .........
    Note the following before
    starting:
    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. Long-- term exposure to noise can
    result in permanent hearing impairment.
    Always use approved hearing protection.
    Maintenance, replacement, or repair of the
    emission control devices and system may
    be performed by any nonroad engine re-
    pair establishment or individual.The Emissions Compliance Period referred
    to on the Emissions Compliance label indi-
    cates 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.
    For reference, please fill out the following
    information that will be needed for future
    servicing of your trimmer:
    Model Number:
    Serial Number:
    Purchase Date:
    Purchased From:
    WARNING!A clearing saw,
    brushcutter or trimmer can be
    dangerous if used incorrectly or
    carelessly, and can cause serious
    or fatal injury to the operator or
    others. It is extremely important
    that you read and understand the
    contents of this operator’s manual.
    WARNING!Under no circum-
    stances may the design of the
    machine be modified without the
    permission of the manufacturer.
    Always use genuine accessories.
    Non -- authorized modifications
    and/or accessories can result
    in serious personal injury or the
    death of the operator or others.
    Your warranty may not cover
    damage or liability caused by the
    use of non -- authorized accesso-
    ries or replacement parts.
    WARNING!The engine exhaust
    from this product contains chemicals
    known to the State of California to
    cause cancer, birth defects or other
    reproductive harm. 
    						
    							3
    KEY TO SYMBOLS
    Only intended for trimmer heads.
    Other symbols/decals on the machine
    refer to special certification requirements
    for certain markets.
    Stop the engine by pushing
    and holding the stop switch
    in the STOP position until the
    engine stops before carrying
    out any checks or maintenance.
    Regular cleaning is required.
    Visual check.
    Approved eye protection must
    always be used.Symbols
    WARNI NG !
    Clearing saws,
    brushcutters and trimmers can be
    dangerous! Careless or incorrect
    use can result in serious or fatal
    injury to the operator or others.
    Please read the operator’s manual
    carefully and make sure you
    understand the instructions
    before using the machine.
    Always wear:
    SA protective helmet where there
    is a risk of falling objects
    SHearing protection
    SApproved eye protection
    Max. speed of output shaft, rpm
    Watch out for thrown objects and
    ricochets.
    The operator of the machine
    must ensure, while working,
    that no persons or animals
    come closer than 50 feet
    (15 meters).
    Arrows which show limits for
    handle positioning.
    Always wear approved protective
    gloves.
    Wear sturdy, non-- slip boots.
    Only use non-- metallic, flexible
    cutting attachments, i.e. trimmer
    heads with trimmer line. 
    						
    							4
    SAFETY INSTRUCTIONS
    GLOVES
    Gloves should be worn when necessary,
    e.g., when fitting cutting attachments.
    HEARING PROTECTION
    Wear hearing protection that provides
    adequate noise reduction.
    EYE PROTECTION
    Always wear approved eye protection. If
    you use a visor then you must also wear
    approved protective goggles. Approved
    protective goggles must comply with
    standard ANSI Z87.1.
    BOOTS
    Wear sturdy, non-- slip boots.
    CLOTHING
    Wear clothes made of a strong fabric and
    avoid loose clothing that can catch on
    twigs and branches. Always wear heavy,
    long pants. Do not wear jewelry, shorts
    sandals or go barefoot. Secure hair so it is
    above shoulder level.
    Personal protective equipment
    WARNING !Listen out for warn-
    ing signals or shouts when you are
    wearing hearing protection. Always
    remove your hearing protection as
    soon as the engine stops.
    IMPORTANT!Whenever you use a clear-
    ing saw, brushcutter or trimmer you must
    wear personal protective equipment that is
    approved by the authorities. Personal
    protective equipment does not eliminate
    the risk of accidents, but it can reduce the
    effects of an injury in the event of an acci-
    dent. Ask your dealer for help when
    choosing protective equipment.
    FIRST AID KIT
    Always have a first aid kit nearby.
    Machine’s safety equipmentThis section describes the machine’s safe-
    ty equipment, its purpose, and how checks
    and maintenance should be carried out to
    ensure that it operates correctly. See the
    “Know your trimmer ” section to locate
    where this equipment is positioned on your
    machine.
    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 ser-
    vicing dealer.
    Throttle lockThe throttle lock is designed to prevent ac-
    cidental operation of the throttle control.
    When you press the lock (A) (i.e. when you
    grasp the handle) it releases the throttle
    control (B). When you release the handle
    the throttle control and the throttle lock both
    move back to their original positions. This
    movement is controlled by two independent
    return springs. This arrangement means
    that the throttle control is automatically
    locked at the idle setting.
    Stop switchMake sure the engine stops when you push
    and hold the stop switch.
    WARNING!Never use a machine
    that has faulty safety equipment!
    Carry out the inspection, mainte -
    nance and service routines listed in
    this section.
    A
    B 
    						
    							5
    SAFETY INSTRUCTIONS
    Cutting attachment guardThis guard is intended to prevent loose ob-
    jects from being thrown towards the opera-
    tor. The guard also protects the operator
    from accidental contact with the cutting at-
    tachment.
    Use of incorrectly wound trimmer line or an
    incorrect cutting attachment increases the
    level of vibration.
    MufflerThe muffler is designed to reduce the noise
    level and to direct the exhaust gases away
    from the operator.
    CAUTION!Muffler is fitted with a catalytic
    converter designed to reduce harmful ex-
    haust gases.
    For mufflers, it is very important that you fol-
    low the instructions on checking, maintain-
    ing, and servicing your machine.
    See Checking, maintaining and servicing the
    machine’s safety equipment section.
    WARNING!Never use a cutting
    attachment without an approved
    guard. See the section on “Technical
    data”. If an incorrect or faulty guard
    is fitted this can cause serious
    personal injury.
    WARNING!Overexposure to
    vibration can lead to circulatory
    damage or nerve damage in people
    who have impaired circulation.
    Contact your doctor if you experi -
    ence symptoms of overexposure to
    vibration. Such symptoms include
    numbness, loss of feeling, tingling,
    pricking, pain, loss of strength,
    changes in skin color or condition.
    These symptoms normally appear
    in the fingers, hands or wrists. The
    risk increases at low temperatures.
    WARNING!Mufflers fitted with
    catalytic converters get very hot
    duringuseandremainsoforsome
    time after stopping. This also ap -
    plies at idle speed. Contact can re -
    sult in burns to the skin. Remember
    theriskoffire!
    WARNING!The inside of the
    muffler contain chemicals that may
    be carcinogenic. Avoid contact with
    these elements in the event of a
    damaged muffler.
    WARNING!Bear in mind that:
    Engine exhaust fumes contain car -
    bon monoxide, which can cause
    carbon monoxide poisoning. For
    this reason you should not start or
    run the machine indoors, or any -
    where that is poorly ventilated.
    The exhaust fumes from the engine
    are hot and may contain sparks
    which can start a fire. Never start
    the machine indoors or near com-
    bustible material!
    Cutting equipmentA trimmer head is intended for trimming
    grass.
    Checking, maintaining and
    servicing the machine’s
    safety equipment
    IMPORTANT!
    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 de-
    scribed below you must contact your service
    agent. When you buy any of our products we
    guarantee the availability of professional re-
    pairs and service. If the retailer who sells
    your machine is not a servicing dealer, ask
    him for the address of your nearest service
    agent. 
    						
    							6
    SAFETY INSTRUCTIONS
    Throttle lockSMake sure the throttle control is locked
    at the idle setting when the throttle lock
    is released.
    SPress the throttle lock and make sure it
    returns to its original position when you
    release it.
    SCheck that the throttle control and
    throttle lock move freely and that the
    return springs work properly.
    SSee instructions under the section
    “Start”. Start the machine and apply full
    throttle. Release the throttle and check
    that the cutting attachment stops and re-
    mains at a standstill. If the cutting attach-
    ment rotates with the throttle in the idle
    position then the carburetor idle setting
    must be checked. See instructions under
    the section “Maintenance”.Stop switchSStart the engine and make sure the engine
    stops when you push and hold the stop
    switch.
    Cutting attachment guard
    SEnsure that the guard is undamaged and
    is not cracked.
    SReplace the guard if it has been exposed
    to impact or is cracked.
    SAlways use the recommended guard for
    the cutting attachment you are using. See
    section on “Technical data”.
    Muffler
    SNever use a machine that has a faulty
    muffler.
    SRegularly check that the muffler is securely
    attached to the machine.
    SThe muffler on this unit is equipped with a
    special spark arrestor mesh. The mesh
    should be checked and, if necessary.
    cleaned by a servicing dealer. A blocked
    mesh will cause the machine to overheat,
    which can lead to serious damage. Never
    use a muffler with a defective spark arres-
    tor mesh. See the Maintenance section. 
    						
    							7
    SAFETY INSTRUCTIONS
    Trimmer h eadSOnly use the recommended cutting at-
    tachments. See the section on “Technical
    data”.
    WARNING!Never use a machine
    with faulty safety equipment. The
    machine’s safety equipment must be
    checked and maintained as
    described in this section.
    If your machine fails any of these
    checks contact your service agent to
    get it repaired.
    IMPORTANT!
    This section describes how to choose and
    maintain your cutting equipment in order to:
    Obtain maximum cutting performance.
    Extend the life of cutting equipment.
    Only use cutting attachments with the guards
    we recommend! See the section on
    “Technical data”.
    Refer to the instructions for the cutting attach-
    ment to check the correct way to load the
    trimmer line and the correct line diameter.IMPORTANT!
    Always ensure the trimmer line is wound
    tightly and evenly around the drum, other-
    wise the machine will generate harmful
    vibration.WARNING!Always stop the en-
    gine before doing any work on the
    cutting attachment. This continues
    to rotate even after the throttle has
    been released. Ensure that the
    cutting attachment has stopped
    completely and disconnect the HT
    lead from the spark plug before
    you start to work on it.
    Cutting equipmentThis section describes how to choose and
    maintain your cutting equipment in order to:
    SObtain maximum cutting performance.
    SExtend the life of cutting equipment.
    General rules
    1. Only use cutting attachments with the
    guards we recommend! See the section
    on “Technical Data”.
    2. Check the cutting attachment for damage
    or cracks. A damaged cutting attachment
    should always be replaced.SSmaller machines generally require small
    trimmer heads and vice versa. This is be-
    cause when clearing using trimmer line
    the engine must throw out the trimmer
    line radially from the trimmer head and
    overcome the resistance of the grass
    being cleared.
    SThe length of the trimmer line is also im-
    portant. A longer trimmer line requires
    greater engine power than a shorter
    trimmer line of the same diameter.
    SMake sure that the cutter on the trimmer
    guard is intact. This is used to cut the
    trimmer line to the correct length.
    STo increase the life of the trimmer line it
    can be soaked in water for a couple of
    days. This will make the line tougher so
    that it lasts longer. 
    						
    							8
    SAFETY INSTRUCTIONS
    General safety precautions
    IMPORTANT!
    SThe machine is only designed for trimming
    grass.
    SThe only accessories you can operate
    with this engine unit are the cutting at-
    tachments we recommend in the “Tech-
    nical data” section.
    SNever use wire, rope, string, etc.
    SNever use the machine if you are tired, if
    you have drunk alcohol, or if you are tak-
    ing medication that could affect your vi-
    sion, your judgment or your coordination.
    SNever use the machine in extreme weath-
    er conditions such as severe cold, very hot
    and/or humid climates.
    SNever use a machine that has been modi-
    fied in any way from its original specifica-
    tion.
    SWear personal protective equipment. See
    instructions in the “Personal protective
    equipment” section.
    SNever 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 quali-
    fied specialists. See instructions in the
    “Maintenance” section.
    SAll covers and guards must be fitted before
    starting. Make sure the spark plug cap and
    HT lead are not damaged. Otherwise you
    could get an electric shock.
    SThe machine operator must ensure that no
    people or animals come closer than 15
    meters while working.
    SStay clear of spinning line.
    SSecure or remove loose clothing or cloth-
    ing with loosely hanging ties, straps, tas -
    sels, etc. They can be caught in moving
    parts.
    SBeing fully covered also helps protect you
    from debris and pieces of toxic plants
    thrown by spinning line.
    SKeep handles free of oil and fuel.
    SAlways keep the engine on the right hand
    side of your body.
    SHold the unit firmly with both hands.
    SKeep trimmer head below waist level and
    away from all parts of your body. Do not
    raise engine above your waist.
    SKeep all parts of your body away from
    muffler and spinning line. Keep engine be-
    low waist level. A hot muffler can cause
    serious burns.
    SKeep firm footing and balance. Do not
    overreach or use from unstable surfaces
    such as ladders, trees, steep slopes, roof-
    tops, etc.
    SUse only in daylight or good artificial light.
    SUse only for jobs explained in this manual.
    Starting
    SEnsure that all of the engine covers and
    housings are properly fitted before the
    trimmer is started.
    SNever start or attempt to run the unit with
    the clutch, clutch drum, clutch cover, or
    driveshaft removed.
    SNever start the machine indoors. Exhaust
    fumes can be dangerous if inhaled.
    SObserve your surroundings and make sur
    ethat there is no risk of people or animals
    coming into contact with the cutting equip-
    ment.
    SSee the “Starting and Stopping” section for
    complete instructions.
    Fuel safety
    SAlways use a fuel container with an anti--
    spill valve.
    SNever refuel the machine while the engine
    is running.
    SAlways stop the engine and let it cool for a
    few minutes before refueling.
    SMake sure there is plenty of ventilation
    when refueling or mixing fuel (gasoline and
    2-- stroke oil).
    SMove the machine at least 10 feet (3 me-
    ters) from the refueling point before start-
    ing it.
    SNever start the machine:
    SIf you have spilled fuel on it. Wipe off
    the spillage and allow remaining fuel to
    evaporate.
    SIf 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.
    WARNI NG !Whentheengineis
    started with the choke in either the
    choke or start throttle positions the
    cutting attachment will start to
    rotate immediately.
    WARNING!A faulty cutting at-
    tachment may increase the risk of
    accidents.
    Min. 10 ft.
    (3 m) 
    						
    							9
    SAFETY INSTRUCTIONS
    SIf the machine is leaking fuel. Check
    regularly for leaks from the fuel cap
    and fuel lines.
    SAvoid all skin contact with fuel. Fuel is
    a skin irritant and may even cause
    skin changes.
    Transporting and storageSStore and transport the machine and fuel
    so that there is no risk of any leakage or
    fumes coming into contact with sparks or
    naked flames, for example, from electri-
    cal machinery, electric motors, electrical
    relays/switches or boilers.
    SWhen storing and transporting fuel al-
    ways use approved containers intended
    for this purpose.
    SWhen storing the machine for long peri-
    ods the fuel tank must be emptied. Con-
    tact your local gas station to find out
    where to dispose of excess fuel.
    General working instructions
    IMPORTANT!
    This section describes the basic safety pre-
    cautions for working with trimmers. If you
    encounter a situation where you are uncer-
    tain how to proceed you should ask an ex -
    pert. Contact your servicing dealer.
    Avoid all usage which you consider to be
    beyond your capability.
    You must understand the difference between
    forestry clearing, grass clearing and grass
    trimming before use.
    Basic safety rules
    1. Look around you:
    STo ensure that people, animals or other
    things cannot affect your control of the
    machine.
    STo ensure that people, animals, etc.,
    do not come into contact with the cut-
    ting attachment or loose objects that
    are thrown out by the cutting attach-
    ment.
    SCAUTION!Do not use the machine
    unless you are able to call for help in
    the event 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. Make sure you can mo
    ve and stand safely.
    Check the area around you for possible ob-
    stacles (roots, rocks, branches, ditches, etc.)
    in case you have to move suddenly. Take
    great care when working on sloping ground.
    4. Switch off the engine before moving to
    another area.
    5. Never put the machine down with the engine
    running.
    Basic working techniquesSAlways slow the engine to idle speed after
    each working operation. Long periods at
    full throttle without any load on the engine
    can lead to serious engine damage.
    Grass trimming using a trimmer
    head
    Trimming
    SHold the trimmer head just above the
    ground at an angle. It is the end of the trim-
    mer line that does the work. Let the trim-
    mer line work at its own pace. Never press
    the trimmer line into the area to be cut.
    SThe trimmer line can easily remove grass
    and weeds up against walls, fences, trees
    and borders, however it can also damage
    sensitive bark on trees and bushes, and
    damage fence posts.
    SReduce the risk of damaging plants by short-
    ening the trimmer line to 4-- 4 1/2 inches
    (10-- 12 cm) and reducing the engine speed.
    SWhen trimming you should use less than
    full throttle so that the trimmer line lasts
    longer and to reduce the wear on the
    trimmer head.
    WARNING!Sometimes branches
    or grass get caught between the
    guard and cutting attachment.
    Always stop the engine before
    cleaning.
    WARNING !Take care when han-
    dling fuel. Bear in mind the risk of
    fire, explosion and inhaling fumes. 
    						
    							10
    SAFETY INSTRUCTIONS
    Sweeping
    SThe fan effect of the rotating line can be
    used for quick and easy clearing up.
    Hold the trimmer line parallel to and
    above the area to be swept and move
    the tool to and fro.
    SWhen cutting and sweeping you should
    use full throttle to obtain the best results.Clearing
    SThe clearing technique removes all un-
    wanted vegetation. Keep the trimmer
    head just above the ground and tilt it. Let
    the end of the trimmer line strike the
    ground around trees, posts, statues and
    the like.CAUTION!This technique
    increases the wear on the trimmer line.
    SThe trimmer line wears quicker and must
    be fed forward more often when working
    against stones, brick, concrete, metal
    fences, etc., than when coming into con-
    tact with trees and wooden fences.
    Cutting
    SThe trimmer is ideal for cutting grass that
    is difficult to reach using a normal lawn
    mower. Keep the trimmer line parallel to
    the ground when cutting. Avoid pressing
    the trimmer head against the ground as
    this can ruin the lawn and damage the
    tool.
    SDo not allow the trimmer head to con--
    stantly come into contact with the ground
    during normal cutting. Constant contact
    of this type can cause damage and wear
    to the trimmer head.
    WARNING!Neither the operator
    of the machine nor anyone else may
    attempt to remove the cut material
    while the engine is running or the
    trimmer line is rotating, as this can
    result in serious injury. Stop the
    engine and trimmer head before you
    remove material that has wound
    around the drive shaft as otherwise
    there is a risk of injury. The bevel
    gear can get hot during use and may
    remain so for a while afterwards. You
    could get burned if you touch it.
    WARNING!Watch out for thrown
    objects. Always wear eye protection.
    Never lean over the cutting attach -
    ment guard. Stones, rubbish, etc.
    can be thrown up into the eyes
    causing blindness or serious injury.
    Keep unauthorized persons at a dis -
    tance. Children, animals, onlookers
    and helpers should be kept outside
    the safety zone of 50 feet (15 meters).
    Stop the machine immediately if
    anyone approaches. 
    						
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