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Instruções de Operação Stihl, Modelo 310

Fabricante : Stihl
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Arquivo Nome : 0458_209_8221_A_01.pdf

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MS 290, MS 310, MS 390 English 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. "Low kickback saw chain" is a chain which has met the kickback performance requirements of § 4.1.3.2 of CSA Standard Z 62.3-04 Chain Saw Kickback when tested in its original condition on a selected representative sample of chainsaws. !Warning! There are potential powerhead and bar combinations with which low kickback saw chains can be used which have not been specifically certified to comply with the 60 ° / 45 ° computer derived kickback angle of § 4.1.3 of CSA Standard Z 62.304 Chain Saw Kickback. Some low kickback chains have not been tested with all powerhead and bar combinations. !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. Reduced kickback bars 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. Bow Guides !Warning! Do not mount a bow guide on any STIHL chainsaw. Any chainsaw equipped with a bow guide is potentially very dangerous. The risk of kickback is increased with a bow guide because of the increased kickback contact area. Low kickback chain will not significantly reduce the risk of kickback injury when used on a bow guide. To avoid kickback The best protection from personal injury that may result from kickback is to avoid kickback situations: 1. Hold the chainsaw firmly with both hands and maintain a secure grip. Don’t let go. 2. Be aware of the location of the guide bar nose at all times. 3. Never let the nose of the guide bar contact any object. Do not cut limbs with the nose of the guide bar. Be especially careful near wire fences and when cutting small, tough limbs, small size brush and saplings which may easily catch the chain. 4 Don't overreach. 5. Don't cut above shoulder height. 6. Begin cutting and continue at full throttle. 7. Cut only one log at a time. 8. Use extreme caution when reentering a previous cut. 9. Do not attempt to plunge cut if you are not experienced with these cutting techniques. 10. Be alert for shifting of the log or other forces that may cause the cut to close and pinch the chain. 11. Maintain saw chain properly. Cut with a correctly sharpened, properly tensioned chain at all times. 12. Stand to the side of the cutting path of the chainsaw. MS 290, MS 310, MS 390 English A = Pull-in B = Pushback Cutting Techniques Felling Felling is cutting down a tree. Before felling a tree, consider carefully all conditions which may affect the direction of fall. !Warning! 001BA037 KN 001BA038 KN A B There are a number of factors that may affect and change the intended direction of fall, e.g. wind direction and speed, lean of tree, surrounding trees and obstacles, sloping ground, one-sided limb structure, wood structure, decay, snow load, etc. To reduce the risk of severe or fatal injury to yourself or others, look for these conditions prior to beginning the cut, and be alert for a change in direction while the tree is falling. !Warning! Always observe the general condition of the tree. Inexperienced users should never attempt to cut trees which are decayed or rotted inside or which are leaning or otherwise under tension. There is an increased risk that such trees could snap or split while being cut and cause serious or fatal injury to the operator or bystanders. Also look for broken or dead branches which could vibrate loose and fall on the operator. When felling on a slope, the operator should stand on the uphill side if possible. Pull-in occurs when the chain on the bottom of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the chain pulls the saw forward and may cause the operator to lose control. Pull-in frequently occurs when the bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood. !Warning! Use extreme caution when cutting small size brush and saplings which may easily catch the chain, be whipped towards you or pull you off balance. To avoid pull-in 1. Always start a cut with the chain rotating at full speed and the bumper spike in contact with the wood. 2. The risk of pull-in may also be reduced by using wedges to open the kerf or cut. Pushback occurs when the chain on the top of the bar is suddenly stopped when it is pinched, caught or encounters a foreign object in the wood. The reaction of the chain may drive the saw rapide...