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Stihl 201 Tcm Manual

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    							MS 201 TC-M
    Disengaging the Chain Brake
    NPull the hand guard towards the 
    front handle until there is an audible 
    click – the chain brake is 
    Always disengage chain brake before 
    accelerating the engine (except when 
    checking its operation) and before 
    starting cutting work.
    High revs with the chain brake engaged 
    (chain locked) will quickly damage the 
    powerhead and chain drive (clutch, 
    chain brake).
    The chain brake is also activated by the 
    inertia of the front hand guard if the 
    kickback force of the saw is high 
    enough: The hand guard is accelerated 
    toward the bar nose.
    The chain brake will operate only if the 
    hand guard has not been modified in any 
    Checking Operation of the Chain Brake
    Before starting work: Run engine at idle 
    speed, engage the chain brake (push 
    hand guard towards bar nose) and open 
    the throttle wide 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. STIHL recommends that you 
    have servicing and repair work carried 
    out exclusively by an authorized STIHL 
    servicing dealer. Maintain the following 
    servicing intervals:
    At temperatures below +10 °C
    NRemove chain sprocket cover – see 
    "Mounting the bar and chain"
    NSet shutter to "winter operation" r
    In the "winter operation" setting, heated 
    air is drawn in from around the cylinder 
    and mixed with cold air. This prevents air 
    filter and carburetor icing.
    At temperatures above +20 °C
    NAlways return the shutter to the 
    position for "summer operation" s
    Risk of engine malfunction – 
    0012BA033 KN
    3aUWWLPH XVaJH  HYHU\ 6 
    0011BA006 KN 
    							MS 201 TC-M
    Positions of Master Control Lever
    STOP or † – Master Control lever must 
    be pushed in direction of STOP or † to 
    switch off ignition. The Master Control 
    lever springs back to the run positionF 
    when it is released.
    The ignition is switched on again 
    automatically after the engine stops. 
    Engine can be started by operating the 
    rewind starter.
    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 
    Master Control lever to start} and let 
    go of the throttle trigger and trigger 
    lockout. Release the Master Control 
    lever – it then returns automatically to 
    the start position}.
    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.
    To switch off the engine, move the 
    Master Control lever in the direction of 
    STOP o r  † – when released, the Master 
    Control lever springs back to the run 
    positionF.Holding the Saw
    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 with your right 
    hand on the top handle.
    NRest your right knee on the 
    carburetor box cover.Starting / Stopping the 
    0012BA036 KN
    217BA007 KN 
    							MS 201 TC-M
    NPull the starter grip slowly with your 
    left 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, 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.
    NPush the hand guard (1) forward – 
    the chain is locked.
    The Master Control lever (4) is in the 
    normal run positionF.
    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 }.
    NHold your saw firmly.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 (4) to start 
    position} and repeat starting 
    As soon as the engine runs
    NIf the engine was started in the start 
    position}:  Press down trigger 
    lockout (1)  and the pull the throttle 
    trigger (2) at the same time – the 
    Master Control lever (3) moves to 
    the run positionF and the engine 
    settles down to idling speed.
    0012BA008 KN
    0012BA037 KN
    0012BA038 KN
    							MS 201 TC-M
    22 NPull the hand guard back towards 
    the front handle.
    The chain brake is now disengaged – 
    your saw is ready for operation.
    Always disengage chain brake before 
    accelerating the engine. High revs with 
    the chain brake engaged (chain locked) 
    will quickly damage the clutch and chain 
    At very low outside temperatures
    NChange over to winter operation if 
    necessary – see “Winter Operation”.
    Stopping the Engine
    NMove the Master Control lever in the 
    direction of STOP or † – when 
    released, the Master Control lever 
    springs back to the normal run 
    If engine does not start
    NCheck that all settings are correct.
    NCheck that there is fuel in the tank 
    and refuel if necessary.NCheck that the spark plug boot is 
    properly connected.
    NRepeat the starting procedure.
    It is possible that the fuel-air mixture in 
    the combustion chamber is over-rich 
    and has flooded the engine.
    NRemove the spark plug – see 
    "Spark Plug".
    NDry the spark plug.
    NHold the saw on the ground.
    NPush the Master Control lever as far 
    as stop in direction of STOP or † 
    and hold it there.
    An ignition spark may occur if the Master 
    Control lever is not held against STOP 
    or †.
    NOperate the rewind starter several 
    NRelease the Master Control lever – it 
    springs back to the run positionF.
    NInstall the spark plug – see "Spark 
    NHold and start your saw as 
    During the break-in period
    A factory new machine should not be run 
    at high revs (full throttle off load) for the 
    first three tank fillings. This avoids 
    unnecessarily high loads during the 
    break-in period. As all moving parts 
    have to bed in during the break-in 
    period, the frictional resistances in the 
    shortblock are greater during this period. 
    The engine develops its maximum 
    power after about 5 to 15 tank fillings.
    During work
    Open the throttle only when the chain 
    brake is off. Running the engine at high 
    revs with the chain brake engaged 
    (chain locked) will quickly damage the 
    engine and chain drive (clutch, chain 
    Check chain tension frequently
    A new saw chain must be retensioned 
    more frequently than one that has been 
    in use already for an extended period.
    Chain cold
    Tension is correct when the chain fits 
    snugly against the underside of the bar 
    but can still be pulled along the bar by 
    hand. Retension if necessary – see 
    "Tensioning the Saw Chain".
    0012BA033 KN
    							MS 201 TC-M
    23 Chain at operating temperature
    The chain stretches and begins to sag. 
    The drive links must not come out of the 
    bar groove on the underside of the bar – 
    the chain may otherwise jump off the 
    bar. Retension the chain – see 
    "Tensioning the Saw Chain".
    The chain contracts as it cools down. If it 
    is not slackened off, it can damage the 
    crankshaft and bearings.
    After a long period of full-throttle 
    After a long period of full-throttle 
    operation, allow engine to run for a while 
    at idle speed so that the heat in the 
    engine can be dissipated by flow of 
    cooling air. This protects engine-
    mounted components (ignition, 
    carburetor) from thermal overload.
    After finishing work
    NSlacken off the chain if you have 
    retensioned it at operating 
    temperature during work.
    Always slacken off the chain again after 
    finishing work. The chain contracts as it 
    cools down. If it is not slackened off, it 
    can damage the crankshaft and 
    bearings.Short-term storage
    Wait for engine to cool down. Keep the 
    machine with a full tank of fuel in a dry 
    place, well away from sources of 
    ignition, until you need it again.
    Long-term storage
    See "Storing the machine"Varying cutting lengths, types of wood 
    and work techniques require varying 
    amounts of oil.
    The oil flow can be adjusted as needed 
    using the adjusting screw (1) on the top 
    of the machine.
    Ematic position (E), medium oil flow –
    NTurn adjusting screw to "E" (Ematic 
    To increase oil flow –
    Nturn the adjusting screw clockwise
    To reduce oil flow –
    Nturn the adjusting screw 
    The chain must always be coated with 
    Oil Quantity Control
    0011BA034 KN 
    							MS 201 TC-M
    24 NFlip the bar – after each sharpening 
    and each time the chain is changed 
    – to avoid uneven wear, especially 
    at the sprocket nose and on the 
    NPeriodically clean the oil inlet 
    hole (1), oil outlet channel (2) and 
    bar groove (3)
    NMeasure groove depth – using the 
    measuring tool on the file gauge 
    (special accessory) – in the area 
    with the greatest wearIf the groove is not at least this deep:
    NReplace guide bar
    Otherwise the drive links will grind 
    against the base of the groove – the 
    bottoms of the cutters and the tie straps 
    will not lie against the bar.If there is a noticeable loss of engine 
    NTurn the twist lock 90° 
    NRemove the shroud upwards.
    NRemove the air filter upwards.
    NWash the filter in STIHL special 
    cleaner (special accessory) or a 
    clean, non-flammable solution (e.g. 
    warm soapy water) and then dry.
    Do not clean a fleece filter (option) with 
    a brush.
    Always replace a damaged filter.
    Taking Care of the Guide Bar
    Chain type Chain pitch Minimum 
    groove depth
    Picco 1/4“ P 4.0 mm 
    Rapid 1/4“ 4.0 mm
    3 1
    143BA026 KN
    							MS 201 TC-M
    Basic information
    M-Tronic regulates the fuel quantity and 
    ignition timing for all operating states 
    M-Tronic stands for easy, fast starting, 
    constant optimum engine performance, 
    outstanding acceleration and automatic 
    adaptation to changes in operating 
    Manual carburetor adjustments are no 
    longer required – the carburetor does 
    not have any adjusting screws.
    Automatic adjustment
    Under extremely changed operating 
    conditions, attainment of the optimal 
    setting can be accelerated as follows:
    NCarry out five uniform cuts to length 
    under full loadNIf the engine is down on power, 
    difficult to start or runs poorly at idle 
    speed, first check the spark plug.
    NFit a new spark plug after about 100 
    operating hours – or sooner if the 
    electrodes are badly eroded. Install 
    only suppressed spark plugs of the 
    type approved by STIHL – see 
    Removing the Spark Plug
    NMove the Master Control lever to the 
    stop position (0).
    NDisengage the chain brake.NRotate the captive nut (1) 
    counterclockwise until it hangs 
    loosely in the sprocket cover.
    NRemove the sprocket cover (2) with 
    captive nut.
    NPull off the spark plug boot.
    NUnscrew the spark plug.
    M-TronicSpark Plug
    0012BA033 KN
    0011BA002 KN
    0011BA020 KN 
    							MS 201 TC-M
    Checking the Spark Plug
    NClean dirty spark plug.
    NCheck electrode gap (A) and 
    readjust if necessary – see 
    NRectify the problems which have 
    caused fouling of the spark plug.
    Possible causes are:
    –Too much oil in fuel mix.
    –Dirty air filter.
    –Unfavorable running conditions.
    Arcing may occur if the adapter nut (1) is 
    loose or missing. Working in an easily 
    combustible or explosive atmosphere 
    may cause a fire or an explosion. This 
    can result result in serious injuries or 
    damage to property.NUse resistor type spark plugs with a 
    properly tightened adapter nut.
    Installing the spark plug
    NInstall the spark plug and connect 
    the spark plug boot (press it down 
    firmly) – reassembly all other parts 
    in the reverse sequence.For periods of 3 months or longer
    NDrain and clean the fuel tank in a 
    well ventilated area.
    NDispose of fuel properly in 
    accordance with local 
    environmental requirements.
    NRun the engine until the carburetor 
    is dry – this helps prevent the 
    carburetor diaphragms sticking 
    NRemove the saw chain and guide 
    bar, clean them and spray with 
    corrosion inhibiting oil.
    NThoroughly clean the machine – pay 
    special attention to the cylinder fins 
    and air filter.
    NIf you use a biological chain and bar 
    lubricant, e.g. STIHL BioPlus, 
    completely fill the chain oil tank.
    NStore the machine in a dry, high or 
    locked location, out of the reach of 
    children and other unauthorized 
    000BA039 KNA
    000BA045 KN
    							MS 201 TC-M
    27 NRemove chain sprocket cover, saw 
    chain and guide bar
    NRelease chain brake – pull hand 
    guard against the front handle
    Fitting a new chain sprocket
    –after use of two saw chains or 
    –if the wear marks (arrows) are 
    deeper than 0.5 mm – otherwise the 
    service life of the saw chain is 
    reduced – use check gauge (special 
    accessory) to test
    Using two saw chains in alternation 
    helps preserve the chain sprocket.
    For the removal and installation of chain 
    sprocket and clutch described in the 
    following, a locking strip is required to 
    immobilize the piston in the cylinder. The 
    locking strip is included with the 
    replacement chain sprocket.
    STIHL recommends use of original 
    STIHL chain sprockets in order to 
    ensure optimal functioning of the chain 
    NPull off the spark plug boot
    NUnscrew spark plug (1)
    NTurn the clutch until the piston is in 
    the lower part of the cylinder
    NInsert the locking strip (2) through 
    the opening as far as it will go into 
    the cylinderNFasten the locking strip (2) on the 
    cylinder fin
    NTurn the clutch clockwise until the 
    piston rests against the locking strip
    NLoosen the hexagon of the clutch 
    clockwise (left-handed thread)
    NUnscrew clutch
    NRemove chain sprocket (3) and 
    needle cage (4) from the crankshaft
    NClean crankshaft stub and needle 
    cage and lubricate with STIHL 
    lubricant (special accessory)Checking and Replacing the 
    Chain Sprocket
    001BA120 KN
    0011BA031 KN
    0011BA037 KN
    0011BA032 KN
    144BA017 LÄ
    144BA018 LÄ 
    							MS 201 TC-M
    NFit needle cage and chain sprocket 
    on the crankshaft
    NScrew the clutch counterclockwise 
    onto the crankshaft
    NTighten the clutch with a torque of 
    25 Nm
    NRemove the locking strip from the 
    cylinder, screw in and tighten the 
    spark plug
    NPush the spark plug boot onto the 
    spark plugSawing effortlessly with a properly 
    sharpened saw chain
    A properly sharpened saw chain cuts 
    through wood effortlessly even with very 
    little pushing.
    Never use a dull or damaged saw chain 
    – this leads to increased physical strain, 
    increased vibration load, unsatisfactory 
    cutting results and increased wear.
    NClean the saw chain
    NCheck the saw chain for cracks and 
    damaged rivets
    NReplace damaged or worn chain 
    components and adapt these parts 
    to the remaining parts in terms of 
    shape and level of wear – rework 
    Carbide-tipped (Duro) saw chains are 
    especially wear-resistant. For an optimal 
    sharpening result, STIHL recommends 
    STIHL servicing dealers.
    Compliance with the angles and 
    dimensions listed below is absolutely 
    necessary. An improperly sharpened 
    saw chain – especially depth gauges 
    that are too low – can lead to increased 
    kickback tendency of the chain saw – 
    risk of injury!
    Chain pitch
    The chain pitch marking (a) is embossed 
    in the area of the depth gauge of each 
    The diameter of file to be used depends 
    on the chain pitch – see table 
    "Sharpening tools".
    The angles of the cutter must be 
    maintained during resharpening.Maintaining and Sharpening 
    the Saw Chain
    Marking (a) Chain pitch
    Inches mm
    7 1/4 P 6.35
    1 or 1/4 1/4 6.35
    6, P or PM 3/8 P 9.32
    2 or 325 0.325 8.25
    3 or 3/8 3/8 9.32
    4 or 404 0.404 10.26
    689BA027 KN
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