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Istruzioni per l'uso Stihl, Modello MS 311

Produttore : Stihl
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Accelerating the engine while the saw chain is blocked increases the load and will cause the clutch to slip continuously. This may occur if the throttle is depressed for more than a few seconds when the chain is pinched in the cut or the chain brake is engaged. It can result in overheating and damage to important components (e.g. clutch, polymer housing components) – which can then increase the risk of injury, e. g., from the saw chain moving while the engine is idling. Warning! Your chain saw is equipped with a chain catcher. It is designed to reduce the risk of personal injury in the event of a thrown or broken chain. From time to time, the catcher may be damaged or removed. To reduce the risk of personal injury, do not operate a chain saw with a damaged or missing chain catcher. Warning! Inspect antivibration elements periodically. Replace damaged, broken or excessively worn antivibration elements immediately, since they may result in loss of control of the saw. A "sponginess" in the feel of the saw, increased vibration or increased "bottoming" during normal operation may indicate damage, breakage or excessive wear. Antivibration elements should always be replaced in sets. If you have any questions as to whether the antivibration elements should be replaced, consult your STIHL servicing dealer. Warning! Your saw is not designed for prying or shoveling away limbs, roots or other objects. Such use could damage the cutting attachment or AV system. Warning! When sawing, make sure that the saw chain does not touch any foreign materials such as rocks, fences, nails and the like. Such objects may be flung off, damage the saw chain or cause the saw to kickback. Warning! The muffler and other parts of the engine (e. g. fins of the cylinder, spark plug) become hot during operation and remain hot for a while after stopping the engine. To reduce risk of burns do not touch the muffler and other parts while they are hot. Warning! To reduce the risk of fire and burn injury, keep the area around the muffler clean. Remove excess lubricant and all debris such as pine needles, branches or leaves. Let the engine cool down sitting on concrete, metal, bare ground or solid wood (e.g. the trunk of a felled tree) away from any combustible substances. Warning! Never modify your muffler. A modified or damaged muffler could cause an increase in heat radiation or sparks, thereby increasing the risk of fire and burn injury. You may also permanently damage the engine. Have your muffler serviced and repaired by your STIHL servicing dealer only. MS 311, MS 391 English Catalytic converter Warning! Some STIHL power tools are equipped with a catalytic converter, which is designed to reduce the exhaust emissions of the engine by a chemical process in the muffler. Due to this process, the muffler does not cool down as rapidly as conventional mufflers when the engine returns to idle or is shut off. To reduce the risk of fire and burn injuries, the following specific safety precautions must be observed. Warning! Since a muffler with a catalytic converter cools down less rapidly than conventional mufflers, always set your power tool down in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other combustible materials while it is still hot. Warning! of control, which, in turn, may cause stay clean and need no service or Kickback: maintenance. If you experience loss of Kickback may occur performance and you suspect a clogged when the moving saw screen, have your muffler maintained by chain near the upper a STIHL servicing dealer. quadrant of the bar nose Reactive forces including kickback contacts a solid object or is pinched. Warning! Reactive forces may occur any time the chain is rotating. Reactive forces can cause serious personal injury. 001BA093 LA 001BA035 KN The reaction of the cutting force of the chain causes a rotational force on the The powerful force used to cut wood can be reversed and work against the operator. If the rotating chain is suddenly stopped by contact with any solid object such as a log or branch or is pinched, the reactive forces may occur instantly. These reactive forces may result in loss chain saw in the direction opposite to the An improperly mounted or damaged chain movement. This may fling the bar serious or fatal injury. An understanding shroud or a damaged/deformed muffler up and back in a lightning fast reaction in of the causes of these reactive forces shell may interfere with the cooling proc may help you avoid the element of an uncontrolled arc mainly in the plane ess of the catalytic converter. To reduce of the bar. Under some cutting surprise and loss of control. Sudden the risk of fire or burn injury, do not con- circumstances the bar moves towards surprise contributes to accidents. tinue work with a damaged or the operator, who may suffer severe or improperly mounted cylinder shroud or fatal injury. a damaged/deformed muffler shell. The most common reacti...