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Stihl Fs 460 Cm Manual

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    STIHL FS 460 C-M, 490 C-M
    Read Instruction Manual thoroughly 
    before use and follow all safety 
    precautions – improper use can 
    cause serious or fatal injury.
    Antes de usar la máquina lea y siga 
    todas las precauciones de 
    seguridad dadas en el manual de 
    instrucciones – el uso incorrecto 
    puede causar lesiones graves o 
    Instruction Manual
    Manual de instrucciones 
    							Instruction Manual
    1 - 53
    Manual de instrucciones
    54 - 111 
    							Original Instruction Manual Printed on chlorine-free paper
    Printing inks contain vegetable oils, paper can be recycled. © ANDREAS STIHL AG & Co. KG, 2018
    0458-746-8621-C. VA5.A18. 
    FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    {This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process 
    with electronic systems.
    Allow only persons who fully understand 
    this manual to operate your clearing 
    To receive maximum performance and 
    satisfaction from your STIHL clearing 
    saw, it is important that you read, 
    understand and follow the safety 
    precautions and the operating and 
    maintenance instructions in chapter 
    "Safety Precautions and Working 
    Techniques" before using your clearing 
    saw. For further information you can go 
    to www.stihlusa.com.
    Contact your STIHL dealer or the STIHL 
    distributor for your area if you do not 
    understand any of the instructions in this 
    Because a clearing saw is a high-speed 
    cutting tool some special safety 
    precautions must be observed to reduce 
    the risk of personal injury. Careless or 
    improper use may cause serious or even 
    fatal injury.
    Make sure your unit is equipped with the 
    proper deflector, handle and harness for 
    the type of cutting attachment being 
    used. Always wear proper eye 
    protection. Guide to Using this Manual 2
    Safety Precautions and Working 
    Techniques 3
    Approved Combinations of Cutting 
    Attachment, Deflector, Limit Stop 
    and Harness 18
    Mounting the Bike Handle 19
    Adjusting the Throttle Cable 23
    Mounting the Deflector 23
    Mounting the Cutting Attachment 24
    Fuel 28
    Fueling 29
    Fitting the Full Harness 30
    Balancing the Machine 30
    Starting / Stopping the Engine 31
    Operating Instructions 33
    Air filter 34
    Engine Management 35
    M-Tronic 35
    Winter Operation 35
    Electric Handle Heating 37
    Spark Plug 37
    Engine Running Behavior 39
    Storing the Machine 39
    Sharpening Metal Cutting Blades 39
    Maintaining the Mowing Head 40
    Inspection and Maintenance by 
    User 41
    Inspections and Maintenance by 
    Dealer 42
    Maintenance and Care 44
    Main Parts 46Specifications 48
    Maintenance and Repairs 49
    Disposal 49
    Limited Warranty 50
    STIHL Incorporated Federal 
    Emission Control Warranty 
    Statement 50
    Trademarks 52 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    The meanings of the pictograms 
    attached to or embossed on the 
    machine are explained in this manual.
    Depending on the model concerned, the 
    following pictograms may be on your 
    Symbols in Text
    Many operating and safety instructions 
    are supported by illustrations.
    The individual steps or procedures 
    described in the manual may be marked 
    in different ways:
    NA bullet marks a step or procedure.
    A description of a step or procedure that 
    refers directly to an illustration may 
    contain item numbers that appear in the 
    illustration. For example:
    NLoosen the screw (1).
    NLever (2) ...
    In addition to the operating instructions, 
    this manual may contain paragraphs 
    that require your special attention. Such 
    paragraphs are marked with the 
    symbols and signal words described 
    Indicates a hazardous situation that, if 
    not avoided, will result in death or 
    serious injury.
    Indicates a hazardous situation that, if 
    not avoided, could result in death or 
    serious injury.
    Indicates a risk of property damage, 
    including damage to the machine or its 
    individual components.
    Engineering Improvements
    STIHL’s philosophy is to continually 
    improve all of its products. As a result, 
    engineering changes and improvements 
    are made from time to time. Therefore, 
    some changes, modifications and 
    improvements may not be covered in 
    this manual. If the operating 
    characteristics or the appearance of 
    your machine differs from those 
    described in this manual, please contact 
    your STIHL dealer or the STIHL 
    distributor for your area for assistance.Guide to Using this Manual
    Fuel tank for gasoline 
    and engine oil mixture
    Press to operate decom-
    pression valve
    Manual fuel pump
    Press to operate manual 
    fuel pump
    Filler hole for gear 
    Air intake summer mode
    Air intake winter mode
    Handle heating 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    3 The terminology utilized in this manual 
    when referring to the power tool reflects 
    the fact that different types of cutting 
    attachments may be mounted on it. The 
    term "trimmer" is used to designate an 
    FS unit that is equipped with a nylon line 
    head or a head with flexible plastic 
    blades (i.e., the PolyCut head). A 
    "brushcutter" designates a unit 
    equipped with a rigid metal blade. Many 
    FS models may be used as either a 
    trimmer or a brushcutter – therefore, the 
    power tool is referred in this manual as a 
    "trimmer / brushcutter." Some smaller 
    and / or lightweight FS models may only 
    be used as a trimmer, i.e., they may not 
    be used with metal blades.The term "clearing saw" indicates a 
    high-powered trimmer / brushcutter that 
    is particularly suited for use with a 
    circular saw blade to clear saplings or 
    small trees.
    As more fully explained later in these 
    Safety Precautions, to reduce the risk of 
    personal injury, make sure your unit is 
    equipped with the proper deflector, limit 
    stop and harness for the type of cutting 
    attachment you are using. Use only 
    cutting attachments that are specifically 
    authorized by STIHL for use on your FS 
    Have your STIHL dealer show you how 
    to operate your power tool. Observe all 
    applicable local safety regulations, 
    standards and ordinances.
    Do not lend or rent your power tool 
    without the instruction manual. Be sure 
    that anyone using it understands the 
    information contained in this manual.
    The use of this machine may be 
    hazardous. If the rotating line or blade 
    comes in contact with your body, it will 
    cut you. When it comes in contact with 
    solid foreign objects such as rocks or 
    bits of metal, it may fling them directly or 
    by ricochet in the direction of bystanders 
    or the operator. Striking such objects 
    could damage the cutting attachment 
    and may cause blades to crack, chip or 
    break. Thrown objects, including broken 
    heads or blades, may result in serious or fatal injury to the operator or bystanders. 
    STIHL does not recommend the use of 
    rigid blades when cutting in stony areas.
    Use your clearing saw equipped with the 
    appropriate cutting attachment only for 
    cutting grass, brush, wood and similar 
    Do not use it for other purposes, since 
    misuse may result in personal injury or 
    property damage, including damage to 
    the machine.
    Minors should never be allowed to use 
    this power tool. Bystanders, especially 
    children, and animals should not be 
    allowed in the area where it is in use.
    To reduce the risk of injury to bystanders 
    and damage to property, never let your 
    power tool run unattended. When it is 
    not in use (e.g. during a work break), 
    shut it off and make sure that 
    unauthorized persons do not use it.
    Most of these safety precautions and 
    warnings apply to the use of all STIHL 
    clearing saws. Different models may 
    have different parts and controls. See 
    the appropriate section of your 
    instruction manual for a description of 
    the controls and the function of the parts 
    of your model.
    Safe use of a clearing saw involves
    1.the operator
    2.the power tool
    3.the use of the power tool.
    Safety Precautions and 
    Working Techniques
    Because a clearing saw 
    is a high-speed, fast-cut-
    ting power tool 
    sometimes equipped with 
    sharp cutting blades, 
    special safety precau-
    tions must be observed to 
    reduce the risk of per-
    sonal injury.
    It is important that you 
    read, fully understand 
    and observe the following 
    safety precautions and 
    warnings. Read the 
    instruction manual and 
    the safety precautions 
    periodically. Careless or 
    improper use may cause 
    serious or fatal injury. 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    Physical Condition
    You must be in good physical condition 
    and mental health and not under the 
    influence of any substance (drugs, 
    alcohol, etc.) which might impair vision, 
    dexterity or judgment. Do not operate 
    this machine when you are fatigued.
    Be alert – if you get tired, take a break. 
    Tiredness may result in loss of control. 
    Working with any power tool can be 
    strenuous. If you have any condition that 
    might be aggravated by strenuous work, 
    check with your doctor before operating 
    this machine.
    Prolonged use of a power tool (or other 
    machines) exposing the operator to 
    vibrations may produce whitefinger 
    disease (Raynaud's phenomenon) or 
    carpal tunnel syndrome.
    These conditions reduce the hand's 
    ability to feel and regulate temperature, 
    produce numbness and burning 
    sensations and may cause nerve and 
    circulation damage and tissue necrosis.
    All factors which contribute to 
    whitefinger disease are not known, but 
    cold weather, smoking and diseases or 
    physical conditions that affect blood 
    vessels and blood transport, as well as 
    high vibration levels and long periods of exposure to vibration are mentioned as 
    factors in the development of whitefinger 
    disease. In order to reduce the risk of 
    whitefinger disease and carpal tunnel 
    syndrome, please note the following:
    –Most STIHL power tools are 
    available with an anti-vibration 
    ("AV") system designed to reduce 
    the transmission of vibrations 
    created by the machine to the 
    operator's hands. An AV system is 
    recommended for those persons 
    using power tools on a regular or 
    sustained basis.
    –Wear gloves and keep your hands 
    –Keep the AV system well 
    maintained. A power tool with loose 
    components or with damaged or 
    worn AV elements will tend to have 
    higher vibration levels.
    –Maintain a firm grip at all times, but 
    do not squeeze the handles with 
    constant, excessive pressure. Take 
    frequent breaks.
    All the above-mentioned precautions do 
    not guarantee that you will not sustain 
    whitefinger disease or carpal tunnel 
    syndrome. Therefore, continual and 
    regular users should closely monitor the 
    condition of their hands and fingers. If 
    any of the above symptoms appear, 
    seek medical advice immediately.
    The ignition system of the STIHL unit 
    produces an electromagnetic field of a 
    very low intensity. This field may 
    interfere with some pacemakers. To 
    reduce the risk of serious or fatal injury, 
    persons with a pacemaker should consult their physician and the 
    pacemaker manufacturer before 
    operating this tool.
    Proper Clothing
    To reduce the risk of injury, the operator 
    should wear proper protective apparel.
    The deflector provided with your power 
    tool will not protect the operator from all 
    foreign objects (gravel, glass, wire, etc.) 
    thrown back by the rotating cutting 
    attachment. Thrown objects may also 
    ricochet and strike the operator. 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    Be particularly alert and cautious when 
    wearing hearing protection because 
    your ability to hear warnings (shouts, 
    alarms, etc.) is restricted.Avoid loose-fitting jackets, scarfs, 
    neckties, jewelry, flared or cuffed pants, 
    unconfined long hair or anything that 
    could become caught on branches, 
    brush or the moving parts of the unit. 
    Secure hair so it is above shoulder level.
    For illustrations and definitions of the 
    power tool parts see the chapter on 
    "Main Parts."
    Never modify this power tool in any way. 
    Only attachments supplied by STIHL 
    and expressly approved by STIHL for 
    use with the specific STIHL model are 
    authorized. Although certain 
    unauthorized attachments are useable 
    with STIHL power tools, their use may, 
    in fact, be extremely dangerous. For the 
    cutting attachments authorized by 
    STIHL for your unit, see the chapter 
    "Approved Combinations of Cutting 
    Attachment, Deflector, Limit Stop and 
    Harness" in the instruction manual or the 
    STIHL "Cutting Attachments, Parts & 
    Accessories" catalog.
    If this tool is subjected to unusually high 
    loads for which it was not designed (e.g. 
    heavy impact or a fall), always check 
    that it is in good condition before 
    continuing work. Check in particular that 
    the fuel system is tight (no leaks) and 
    that the controls and safety devices are 
    working properly. Do not continue 
    operating this machine if it is damaged. 
    In case of doubt, have it checked by your 
    STIHL servicing dealer.
    Transporting the Power Tool
    To reduce the risk of injury from loss of 
    control and blade or line contact, never 
    carry or transport your power tool with 
    the cutting attachment moving. To reduce the risk of 
    injury to your eyes never 
    operate your power tool 
    unless wearing goggles 
    or properly fitted protec-
    tive glasses with 
    adequate top and side 
    protection complying with 
    ANSI Z87 "+" (or your 
    applicable national stand-
    ard). To reduce the risk of 
    injury to your face STIHL 
    recommends that you 
    also wear a face shield or 
    face screen over your 
    goggles or protective 
    Wear an approved safety 
    hard hat to reduce the 
    risk of injury to your head 
    when there is a danger of 
    head injuries.
    Power tool noise may 
    damage your hearing. 
    Wear sound barriers (ear 
    plugs or ear mufflers) to 
    protect your hearing. 
    Continual and regular 
    users should have their 
    hearing checked 
    Always wear heavy duty 
    work gloves (e.g. made of 
    leather or other wear 
    resistant material) when 
    handling the machine 
    and metal blades. Heavy-
    duty, nonslip gloves 
    improve your grip and 
    help to protect your 
    Clothing must be sturdy 
    and snug-fitting, but allow 
    complete freedom of 
    movement. Wear long 
    pants made of heavy 
    material to help protect 
    your legs. Do not wear 
    shorts, sandals or go 
    Good footing is very 
    important. Wear sturdy 
    boots with nonslip soles. 
    Steel-toed safety boots 
    are recommended. 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    6 It may be carried only in a horizontal 
    position. Grip the shaft in a manner that 
    the machine is balanced horizontally. 
    Keep the hot muffler away from your 
    To reduce the risk of burn 
    injury, do not touch hot 
    parts of the machine and 
    the gear housing when 
    they are hot.
    Always shut off the engine and make 
    sure the cutting attachment has stopped 
    before putting a clearing saw down. 
    When transporting it in a vehicle, 
    properly secure it to prevent turnover, 
    fuel spillage and damage to the unit. 
    STIHL recommends that you keep metal 
    blades covered with the transport guard 
    (optional accessory).
    Your STIHL power tool uses an oil- 
    gasoline mixture for fuel (see the 
    chapter on "Fuel" of your instruction 
    Fueling Instructions
    To reduce the risk of serious injury from 
    burns, never attempt to refuel the unit 
    until it has been completely removed 
    from the operator.
    Fuel your power tool in well-ventilated 
    areas, outdoors. Always shut off the 
    engine and allow it to cool before 
    refueling. Gasoline vapor pressure may 
    build up inside the fuel tank depending 
    on the fuel used, the weather conditions 
    and the tank venting system.
    In order to reduce the risk of burns and 
    other personal injury from escaping gas 
    vapor and fumes, remove the fuel filler 
    cap on your power tool carefully so as to 
    allow any pressure build-up in the tank 
    to release slowly. Never remove the fuel 
    filler cap while the engine is running.Select bare ground for fueling and move 
    at least 10 feet (3 m) from the fueling 
    spot before starting the engine. Wipe off 
    any spilled fuel before starting your 
    In order to reduce the risk of fuel spillage 
    and fire from an improperly tightened 
    fuel cap, correctly position and tighten 
    the fuel cap in the fuel tank opening.
    Different models may be equipped with 
    different fuel caps.
    Toolless cap with grip
    To do this with this STIHL cap, raise the 
    grip on the top of the cap until it is upright 
    at a 90° angle. Insert the cap in the fuel 
    002BA479 KN
    ous burn injury or 
    property damage. Use 
    extreme caution when 
    handling gasoline or fuel 
    mix. Do not smoke or 
    bring any fire or flame 
    near the fuel or the power 
    tool. Note that combus-
    tible fuel vapor may 
    escape from the fuel 
    Check for fuel leakage 
    while refueling and during 
    operation. If fuel leakage 
    is found, do not start or 
    run the engine until the 
    leak is fixed and 
    anyspilled fuel has been 
    wiped away. Take care 
    not to get fuel on your 
    clothing. If this happens, 
    change your clothing 
    001BA220 KN 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    7 tank opening with the raised positioning 
    marks on the grip of the cap and on the 
    fuel tank opening lining up. Using the 
    grip, press the cap down firmly while 
    turning it clockwise as far as it will go 
    (approx. 1/4 turn).
    Misaligned, damaged or broken cap
    NIf the cap does not drop fully into the 
    opening when the positioning marks 
    line up and/or if the cap does not 
    tighten properly when twisted, the 
    base of the cap may be prematurely 
    rotated (in relation to the top) to the 
    closed position. Such misalignment 
    can result from handling, cleaning 
    or an improper attempt at 
    tightening.NTo return the cap to the open 
    position for installation, turn the cap 
    (with the grip up) until it drops fully 
    into the tank opening. Next, twist the 
    cap counterclockwise as far as it will 
    go (approx. 1/4 turn) – this will twist 
    the base of the cap into the correct 
    position. Then, twist the cap 
    clockwise, closing it normally.
    NIf your cap still does not tighten 
    properly, it may be damaged or 
    broken; immediately stop use of the 
    unit and take it to your authorized 
    STIHL dealer for repair.Screw Cap
    See also the "Fueling" chapter in your 
    Instruction Manual for additional 
    Before Starting
    Always check your power tool for proper 
    condition and operation before starting, 
    particularly the throttle trigger, throttle 
    trigger lockout, momentary stop switch, 
    cutting attachment, deflector and 
    harness. The throttle trigger must move 
    freely and always spring back to the idle 
    position. Never attempt to modify the 
    controls or safety devices.
    Check fuel system for leaks, especially 
    the visible parts, e.g., filler cap, hose 
    connections, manual fuel pump (only for 
    power tools equipped with a manual fuel 
    pump). Do not start the engine if there 
    are leaks or damage – risk of fire! Have 
    the machine repaired by a servicing 
    dealer before using it. Fold the grip flush with 
    the top of the cap. Grip 
    the cap and check for 
    tightness. If the grip does 
    not lie completely flush 
    with the cap and the 
    detent on the grip does 
    not fit in the correspond-
    ing recess in the filler 
    opening, or if the cap is 
    loose in the filler opening, 
    the cap is not properly 
    seated and tightened and 
    you must repeat the 
    above steps.
    Left: Base of cap in closed posi-
    tion (with open space)
    Right: Base of cap correctly posi-
    tioned for installation
    001BA227 KN
    001BA226 KN
    ties of fuel. In order to 
    reduce the risk of fuel 
    spillage and fire, tighten 
    the fuel filler cap by hand 
    as securely as possible. 
    							FS 460 C-M, FS 460 C-M L, FS 490 C-M, FS 490 C-M L
    Never operate your power tool if it is 
    damaged, improperly adjusted or 
    maintained, or not completely or 
    securely assembled.
    Do not attach any cutting attachment to 
    a unit without proper installation of all 
    required parts. Failure to use the proper 
    parts may cause the blade or head to fly 
    off and seriously injure the operator or 
    The cutting attachment must be properly 
    tightened and in safe operating 
    condition. Inspect for loose parts (nuts, 
    screws, etc.) and for cracked or 
    damaged heads or cracked, bent, 
    warped or damaged blades. Replace 
    damaged heads or blades before using 
    the power tool. Always keep blades 
    Keep the handles clean and dry at all 
    times; it is particularly important to keep 
    them free of moisture, pitch, oil, fuel mix, 
    grease or resin in order for you to 
    maintain a firm grip and properly control 
    your power tool.
    Check that the spark plug boot is 
    securely mounted on the spark plug – a 
    loose boot may cause arcing that could 
    ignite combustible fumes and cause a 
    As can be seen in that chart, some 
    cutting attachments may require you to 
    change your deflector, limit stop and / or 
    Keep the deflector (and the attached 
    skirt where appropriate) adjusted 
    properly at all times (see chapters on 
    "Mounting the Deflector" and "Mounting 
    the Cutting Attachment" of your 
    instruction manual).Arrows on the deflector (A) and limit 
    stop (B) (as seen from the underside) 
    show the correct direction of rotation of 
    the cutting attachment. When viewed 
    from above, however, the cutting 
    attachment rotates counterclockwise.
    Some of the following symbols may be 
    embossed on the outside of the deflector 
    in order to indicate the approved 
    combination of cutting attachment and 
    deflector. To reduce the risk 
    of personal injury 
    to the operator 
    from blade or line 
    contact and 
    thrown objects, 
    make sure your 
    unit is equipped 
    with the proper 
    deflector, limit stop 
    and harness for 
    the type of cutting 
    attachment being 
    used (see chart in 
    the chapter on 
    "Approved Combi-
    nations of Cutting 
    Deflector, Limit 
    Stop and 
    The deflector may be 
    used in combination with 
    mowing heads.
    The deflector may be 
    used in combination with 
    grass cutting blades.
    000BA006 KN
    000BA007 KN 
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