Husqvarna 359 Operation Manual - Page 12
Sharpening cutting teeth, General advice on adjusting depth gauge setting - replacement chain
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GENERAL SAFETY PRECAUTIONS • A sharp chain eats its way through the wood and produces long, thick chips or shavings. Sharpening cutting teeth • The cutting part of the chain is called the cutter and consists of a cutting tooth (A) and the depth gauge (B). The cutters cutting depth is determined by the difference in height between the two (depth gauge setting). To sharpen cutting teeth you will need a round file and a file gauge. See instructions under the heading Technical data for information on the size of file and gauge that are recommended for the chain fitted to your chain saw. • Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly. When you sharpen a cutting tooth there are four important factors to remember. 1 Filing angle • Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw and file the teeth on the other side. 2 Cutting angle 3 File position • File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (0.16") the chain is worn out and should be replaced. 4 Round file diameter It is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain. General advice on adjusting depth gauge setting • When you sharpen the cutting tooth (A) the depth gauge setting (C) will decrease. To maintain optimal cutting performance the depth gauge (B) has to be filed down to achieve the recommended depth gauge setting. See instructions under the heading Technical data to find the correct depth gauge setting for your particular chain. See instructions under the heading Technical data for information about sharpening your chain. WARNING! Departure from the sharpening ! instructions considerably increases the risk of kickback. 12 - English WARNING! The risk of kickback is increased ! if the depth gauge setting is too large!