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Instructions Stihl, Modèle 48

Fabricant : Stihl
Taille : 42.1 mb
Nom Fichier : d5af75a5-0c20-4d6a-ac5c-429d4a2ae6e3.pdf
Langue d'enseignement: en
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Facilité d'utilisation


The use of other bow guides with a STIHL powerhead can be hazardous to the operator due to the absence of safety guards and spurs and necessary unauthorized modifications needed to mount the bow guide to the STIHL powerhead. Do not use a STIHL bow guide on any powerhead except a STIHL powerhead. Unauthorized combinations are dangerous. Warning! Never attempt to operate a chain saw equipped with a bow guide unless the spurs and both guards are in place (ill. 13). Under no circumstances should any of the spurs or guards be removed. Keep the nuts which hold these items in place tightened at all times. The guards at the top and bottom of the bow guide are required to reduce the possibility of injury caused by contact with the chain. These guards are slotted to allow positioning as close to the powerhead as possible. After the bow guide is mounted on the chain saw, slide the guards as close to the powerhead as possible. The spurs should always be placed firmly against the wood before starting a cut (ill. 14) and should be kept against the wood until the cut is completed. Failure to keep the spurs firmly against the wood during the entire cut could cause the saw to react violently and could result in serious injury or death to the operator. Warning! Be sure to keep the chain properly tensioned. A chain which “sags” or is too loose could jump off the bow and result In serious injury to the operator. Felling with a bow bar is dangerous, because it is more difficult to follow safe felling techniques. Cut only one log at a time. A chain catcher which has been removed to allow mounting of a bow guide must be reattached when remounting the regular guide bar. Devices for reducing the risk of kickback injury STIHL recommends the use of the STIHL Quickstop chain brake on your powerhead with green labeled reduced kickback bars and low kickback chains. 13 Quickstop chain brake STIHL has developed a chain stopping system designed to reduce the risk of injury in certain kickback situations. It is called a Quickstop chain brake. The Quickstop is available as standard equipment on your STIHL chain saw and is available for installation on most older STIHL saws. Ask your dealer to retrofit your older model saw with a chain brake. When a kickback occurs, the guide bar may rotate around the front handle. If the cutting position is such that the operator’s left hand is gripping the front handle behind the hand guard, and if the left hand rotates around the front handle and contacts the front hand guard, which is the Quickstop activating lever, this contact will activate the Quickstop (see ill. 15). The chain brake on some new model STIHL chain saws can also be activated by inertia. See the chapter entitled “Chain Brake” of your Owner’s Manual. Warning! Never operate your chain saw without a front hand guard. In a kickback situation this guard helps protect your left hand or other parts of your body. In addition, removal of the hand guard on a saw equipped with a chain brake will deactivate the chain brake. Warning! No Quickstop or other chain brake device prevents kick-back. These devices are designed to reduce the risk of kickback injury, if activated, in certain kickback situations. In order for the Quickstop to reduce the risk of kickback injury, it must be properly maintained and in good working order. See the chapter entitled “Chain Brake” of your Owner’s Manual. In addition, there must be enough distance between the bar and the operator to ensure that the Quickstop has sufficient time to activate and stop the chain before potential contact with the operator. Warning! An improperly maintained chain brake may increase the time needed to stop the chain after activation, or may not activate at all. Reduced kickback bar STIHL green labeled reduced kickback bars are designed to reduce the risk of kickback injury when used with STIHL green labeled low kickback chains. Warning! When used with other, more aggressive chains, these bars may be less effective in reducing kickback, and may result in higher kickback forces. Low kickback chain Some types of saw chain have specially designed components to reduce the force of nose contact kickback. STIHL has developed low kickback chain for your powerhead. Warning! A dull or improperly sharpened chain may reduce or negate the effects of the design features intended to reduce kickback energy. Improper lowering or sharpening of the depth gauges or shaping of the cutters may increase the chance and the potential energy of a kickback. Always cut with a properly sharpened chain. ----- Warning! Reduced kickback bars and low kickback chains do not prevent kickback, but they are designed to reduce the risk of kickback injury. They are available from your STIHL dealer. Warning! Even if your saw is equipped with a Quickstop, a reduced kickback bar and/or low kickback chain, this does not eliminate the risk of injury by kickback. Therefore always observe all safety precau...


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