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Stihl 441 Cm Manual

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    							MS 441 C-M
    29 To meet the requirements of EPA and 
    CARB we recommend to use STIHL HP 
    Ultra oil.
    Do not use BIA or TCW rated (two-
    stroke water cooled) mix oils or other 
    mix oils that state they are for use in both 
    water cooled and air cooled engines 
    (e.g., outboard motors, snowmobiles, 
    chain saws, mopeds, etc.).
    Take care when handling gasoline. 
    Avoid direct contact with the skin and 
    avoid inhaling fuel vapor. When filling at 
    the pump, first remove the container 
    from your vehicle and place the 
    container on the ground before filling. To 
    reduce the risk of sparks from static 
    discharge and resulting fire and/or 
    explosion, do not fill fuel containers that 
    are sitting in or on a vehicle or trailer.
    The container should be kept tightly 
    closed in order to limit the amount of any 
    moisture that gets into the mixture.
    The machine‘s fuel tank should be 
    cleaned as necessary.
    STIHL MotoMix
    STIHL recommends the use of STIHL 
    MotoMix. STIHL MotoMix has a high 
    octane rating and ensures that you 
    always use the right mix ratio. 
    STIHL MotoMix uses STIHL HP Ultra 
    two-stroke engine oil suited for high 
    performance engines.
    For further details, see 
    Fuel mix ages
    Only mix sufficient fuel for a few days 
    work, not to exceed 30 days of storage. 
    Store in approved fuel-containers only. 
    When mixing, pour oil into the container 
    first, and then add gasoline. Close the 
    container and shake it vigorously by 
    hand to ensure proper mixing of the oil 
    with the fuel.
    Dispose of empty mixing-oil containers 
    only at authorized disposal locations.
    NBefore fueling, clean the filler cap 
    and the area around it to ensure that 
    no dirt falls into the tank.
    Always thoroughly shake the mixture in 
    the canister before fueling your 
    NPosition the machine so that the 
    filler cap is facing up.
    In order to reduce the risk of fire and 
    other personal injury from escaping gas 
    vapor and fumes, remove the fuel filler 
    cap carefully so as to allow any pressure 
    build-up in the tank to release slowly
    Filler cap markings
    Filler caps and fuel tanks may be 
    marked in different ways. Gaso-
    lineOil (STIHL 50:1 or equiva-
    lent high-quality oils)
    US gal. US fl.oz.
    2 1/2 6.4
    5 12.8
    001BA229 KN 
    							MS 441 C-M
    30 Depending on the version, your unit may 
    be equipped with a filler cap and fuel 
    tank with or without symbols.
    Filler cap without symbols
    NRaise handle.
    NTwist filler cap counterclockwise 
    (approx. 1/4 turn).NRemove the filler cap.
    Take care not to spill fuel while fueling 
    and do not overfill the tank – leave 
    approx. 1/2" (13 mm) air space.
    Handle is in an upright position:
    NInsert the cap – positioning marks 
    on the cap and the fuel tank opening 
    must line up.
    NThe cap should drop fully into the 
    opening in this position.NPush the filler cap down and twist it 
    clockwise until it engages.
    NFlip the handle down.
    Checking for proper closure
    NThe lug on the grip must engage 
    entirely in the recess (arrow), and 
    the grip must lie completely flush 
    with the top of the cap. Left: Filler cap without symbols.
    Right: Filler cap with markings and 
    symbols on cap and tank.
    001BA240 KN
    001BA218 KN
    001BA219 KN
    001BA224 KN
    001BA220 KN
    001BA221 KN
    001BA222 KN
    001BA223 KN 
    							MS 441 C-M
    31 NGrip the cap and check for 
    NIf the cap can be moved, it is not 
    properly installed.
    Misalignment of the cap parts
    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 rotated out 
    of position vis-à-vis the top.
    NSuch misalignment can result from 
    handling, cleaning or an improper 
    attempt at tightening.NTo correct a misalignment, turn the 
    cap (with the grip up) until it drops 
    fully into the tank opening.
    NTwist 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.
    NTwist the cap clockwise, closing it 
    normally – see the sections 
    "Closing" and "Checking for proper 
    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.
    Filler cap with markings and symbols
    NRaise handle.NTwist filler cap counterclockwise 
    (approx. 1/4 turn).
    Markings on filler cap and housing must 
    NRemove the filler cap.
    Take care not to spill fuel while fueling 
    and do not overfill the tank – leave 
    approx. 1/2" (13 mm) air space. Left: Base of improperly aligned 
    cap (with open space)
    Right: Base of cap correctly posi-
    tioned for installation
    001BA225 KN
    001BA227 KN
    001BA226 KN
    001BA236 KN
    001BA232 KN
    001BA234 KN
    001BA237 KN 
    							MS 441 C-M
    32 Closing
    Handle is in an upright position:
    NPosition filler cap – markings on filler 
    cap and housing must align.
    NPush the filler cap down as far as it 
    will go.
    NPush the filler cap down and twist it 
    clockwise until it engages.
    Then the markings on filler cap and 
    housing will align.NFlip the handle down.
    Filler cap is now closed.
    If the filler cap will not engage into the 
    tank housing
    The base of the filler cap is rotated in 
    relation to the upper part.
    NLook at the black alignment marks 
    on the top of the filler cap.NWith the filler cap in the filling neck, 
    twist it counterclockwise until it 
    drops into its seat.
    NContinue to twist the filler cap 
    counterclockwise (approx. 1/4 turn) 
    – this will twist the base of the cap 
    into the correct position.
    NWhile pushing down on the cap, 
    twist the filler cap clockwise and 
    close it – see section "Closing."
    001BA234 KN
    001BA233 KN
    001BA231 KN
    001BA235 KN
    001BA241 KN
    							MS 441 C-M
    33 For automatic and reliable lubrication of 
    the chain and guide bar – use only an 
    environmentally compatible quality 
    chain and bar lubricant. Rapidly 
    biodegradable STIHL BioPlus is 
    Biological chain oil must be resistant to 
    aging (e.g. STIHL BioPlus),  since it will 
    otherwise quickly turn to resin. This 
    results in hard deposits that are difficult 
    to remove, especially in the area of the 
    chain drive and chain. It may even cause 
    the oil pump to seize.
    The service life of the chain and guide 
    bar depends on the quality of the 
    lubricant. It is therefore essential to use 
    only a specially formulated chain 
    Do not use waste oil. Renewed contact 
    with waste oil can cause skin cancer. 
    Moreover, waste oil is environmentally 
    Waste oil does not have the necessary 
    lubricating properties and is unsuitable 
    for chain lubrication.
    Preparing the machine
    NThoroughly clean the filler cap and 
    the area around it to ensure that no 
    dirt falls into the tank
    NAlways position the machine so that 
    the filler cap is facing upwards
    NOpen the filler cap
    Filling Chain Oil Tank
    Standard oil pump
    NRefill the chain oil tank every time 
    you refuel
    Oil pump with increased delivery rate 
    (available option)
    Frequent checking and refilling of the oil 
    tank is necessary – see "Adjusting oil 
    NRefill the chain oil tank when the fuel 
    tank is approximately half emptyAll versions
    Take care not to spill chain oil during 
    refilling and do not overfill the tank.
    NClose the filler cap
    There must still be a small amount of 
    chain oil in the oil tank when the fuel tank 
    is empty.
    If the oil tank is still partly full, the reason 
    may be a problem in the oil supply 
    system: Check chain lubrication, clean 
    the oil passages, contact your servicing 
    dealer for assistance if necessary. 
    STIHL recommends that maintenance 
    and repair work be carried out only by 
    authorized STIHL dealers.
    Chain LubricantFilling Chain Oil Tank
    001BA158 KN 
    							MS 441 C-M
    34 The saw chain must always throw off a 
    small amount of oil.
    Never operate your saw without chain 
    lubrication. If the chain runs dry, the 
    whole cutting attachment will be 
    irretrievably damaged within a very short 
    time. Always check chain lubrication and 
    the oil level in the tank before starting 
    Every new chain has to be broken in for 
    about 2 to 3 minutes.
    After breaking in the chain, check chain 
    tension and adjust if necessary – see 
    "Checking Chain Tension".
    Locking chain with chain brake
    –in an emergency
    –when starting
    –at idling speed
    The chain is stopped and locked when 
    the hand guard is pushed toward the bar 
    nose by the left hand – or when brake is 
    activated by inertia in certain kickback 
    Releasing the chain brake
    NPull the hand guard back toward the 
    front handle.
    Always disengage chain brake before 
    accelerating engine and before starting 
    cutting work. The only exception to this 
    rule is when you check operation of the 
    chain brake.
    High revs with the chain brake engaged 
    (chain locked) will quickly damage the 
    powerhead and chain drive (clutch, 
    chain brake).
    The chain brake is designed to be 
    activated also by the inertia of the front 
    hand guard
    if the forces are sufficiently high. The 
    hand guard is accelerated toward the 
    bar nose - even if your left hand is not 
    behind the hand guard, e.g. during a 
    Checking Chain Lubrication
    143BA024 KN
    143BA011 KN
    143BA012 KN 
    							MS 441 C-M
    35 felling cut. The chain brake will operate 
    only if it has been properly maintained 
    and the hand guard has not been 
    modified in any way.
    Check operation of chain brake
    Before starting work: Run engine at idle 
    speed, engage the chain brake (push 
    hand guard toward bar nose). 
    Accelerate up to full throttle for no more 
    than 3 seconds – the chain must not 
    rotate. The hand guard must be free 
    from dirt and move freely.
    Chain brake maintenance
    The chain brake is subject to normal 
    wear. It is necessary to have it serviced 
    and maintained regularly by trained 
    personnel, such as your STIHL servicing 
    dealer, at the following intervals:Pre-heat carburetor at temperatures 
    under +50 °F (10 °C)
    Nloosen screw (1) using the 
    combination wrench or a 
    screwdriver - open at least one turn
    Nturn slide (2) from the s position 
    (summer operation) to the r 
    position (winter operation) – the 
    slide must engage audibly
    NTighten screw
    Now the carburetor is pre-heated by the 
    preheater plate – this helps prevent 
    carburetor icing.NAt temperatures above +70 °F 
    (+20 °C): always return the slide to 
    the summer position –
    otherwise risk of engine malfunction due 
    to overheating!
    If engine trouble occurs, first return the 
    slide from winter to summer position.
    Air filter system
    NRetrofit new air filter if necessary – 
    see "Air filter system"
    At temperatures below +14 °F (-10 °C)
    Under extreme winter conditions 
    (temperatures below -10 °C, powdered 
    or drifting snow), it is recommended to 
    use the "cover plate mounting kit" 
    (special accessory). The mounting kit 
    keeps out powdered or drifting snow.
    Nif the chain saw is extremely cold 
    (frost formation) – after starting, 
    bring the engine up to operating 
    temperature at medium speed 
    (disengage chain brake!) Full-time usage: every 3 
    Part-time usage: every 6 
    Occasional usage: every 12 
    Winter Operation
    219BA045 KN
    219BA046 KN 
    							MS 441 C-M
    36 Mounting the cover plate (special 
    NInsert cover plate (1) with both tabs 
    (arrows) and fasten with screws (2)
    When the mounting kit is used, the slide 
    must be in the winter position.
    If engine trouble occurs, first check 
    whether use of the cover plate is 
    necessary.Switching on the handle heating system 
    (depending on equipment version)
    NSet switch to F – to switch off, return 
    switch to the 0 position
    Overheating during continuous use is 
    impossible. The heating system is 
    Positions of Master Control Lever
    Stop 0 – engine off – the ignition is 
    switched off
    Run positionF – a hot engine is started 
    in this position or the engine runs in this 
    Start position } – a cold engine is 
    started in this position.
    Setting the Master Control Lever
    To move the Master Control lever from 
    the run positionF to start}, depress 
    the trigger lockout and the throttle trigger 
    and hold them in that position – set the 
    Electric Handle Heating
    219BA048 KN
    219BA035 KN
    							MS 441 C-M
    37 Master Control lever to start} and let 
    go of the throttle trigger and trigger 
    The Master Control lever moves from 
    the start position (}) to the run 
    position (F) when you press down the 
    throttle trigger lockout and squeeze the 
    throttle trigger at the same time.
    Holding the Saw
    There are two ways of holding the saw 
    when starting.On the ground 
    NPlace your saw on the ground. 
    Make sure you have a firm footing – 
    check that the chain is not touching 
    any object or the ground.
    NHold the saw firmly on the ground 
    with your left hand on the front 
    handle – your thumb should be 
    under the handle.
    NPut your right foot into the rear 
    handle and press down.Between knees or thighs
    NHold the rear handle tightly between 
    your legs, just above the knees.
    NHold the front handle firmly with 
    your left hand – your thumb should 
    be under the handle.
    219BA036 KN219BA037 KN 
    							MS 441 C-M
    NPull the starter grip slowly with your 
    right hand until you feel it engage – 
    and then give it a brisk strong pull 
    and push down the front handle at 
    the same time. Do not pull out the 
    starter rope to full length – it might 
    otherwise break. Do not let the 
    starter grip snap back. Guide it 
    slowly back into the housing so that 
    the starter rope can rewind properly. 
    Machines without additional manual fuel 
    pump: If the engine is new or after a long 
    out-of-service period or if the tank has 
    been run dry (engine stops), it may be 
    necessary to pull the starter rope several 
    times to prime the fuel system.Starting the Saw
    Bystanders must be well clear of the 
    general work area of the saw.
    NPress in the button to open the 
    decompression valve.
    The decompression valve closes as 
    soon as the engine fires. For this reason 
    you must press in the button before each 
    starting attempt.NPush the hand guard (1) forward – 
    the chain is locked.
    NIf the engine is cold: Press down the 
    trigger lockout (2) and pull the 
    throttle trigger (3) at the same time. 
    Hold both levers in that position and 
    set the Master Control lever (4) to 
    start symbol } 
    NHolding the Saw
    NPull the starter grip quickly and 
    firmly as often as necessary until the 
    engine starts.
    NIf the engine does not start: Move 
    the Master Control lever to start 
    position } and repeat starting 
    219BA038 KN
    219BA039 KN
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