Chainsaw contained in the working condition of the engine that runs on gasoline. Choosing a chainsaw, consumers are often asked the question regarding the rate of sawing wood chainsaw specific instance (for example, whether you want to "put pressure" on the device at work). The answer: in the first place it is dependent on the technical condition benzopilnoy headsets as well as chains. During the poorly sharpened chain in the unit not only will lower the efficiency of sawing, but also increases the possibility of a chainsaw out of action because the load on the engine increases. Therefore, the use of professional experts advise always "edit" the chain (for example, at the end of the working day). In addition, a large contribution to productivity and makes the configuration of cutting teeth and the step chain. The best result possible in the optimal selection of chain saws as well as the possibility of the engine. Power saws - a 2-nd valuable parameter characterizing the possibility of chainsaws, and determines the limiting conditions of applicability of a particular model. The most insecure moment in the period of chainsaws can be identified such as "kickback" - a sharp garbage unit in the direction of the operator. There he was in the case when most tip benzopilnoy tires in contact with the surface of the wood is cut. The only option not available in such a situation of trauma - a quick stop chain unit. Carries out a given task a certain brake (it is called "inertial"), a drive for him is a shield of the instrument, which is located to the left upper limb of the operator. This shield is a kind of lever, which can hold 2 position. Before you use saws flap switch to "closer to the hand" and it saw "put to the platoon." At the time of the reverse shock of the operator's hand is resting in it, at this time shield enabled, immediately activating the brake benzopilnoy chain. Also, he can change position without contact with the terminal operator, just due to inertia. Another option to protect themselves from the reverse shock can be called the elimination of dangerous sector of the process of sawing. This is achieved by a specialized panel on the chainsaw, closing the end of saw sets and does not allow instrument balk. However, this method is used much less than installing brakes on the circuit. In addition, for example, Husqvarna chainsaw and some other deliberately not fitted with such plates. Reason Sweden inherent safety standards require the ability to work through the end of the bus unit. Felling operation by the operator, a Swede, much like cutting loaves of bread: lumberjack first bites into the barrel end of the saw bar, and then performs a circle around him. This way you can blame the tree two times thicker than the length of the tire. In our country this way is allowed only high-performance fellers.