Husqvarna 440 e-series Owner's Manual

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GENERAL SAFETY PRECAUTIONSEnglish – 151153159-95 Rev.2 2010-04-08• The cutting part of the chain is called the cutter andconsists of a cutting tooth (A) and the depth gauge(B). The cutters cutting depth is determined by thedifference in height between the two (depth gaugesetting). (18)When you sharpen a cutting tooth there are four importantfactors to remember.1 Filing angle (19)2 Cutting angle (20)3 File position (21)4 Round file diameterIt is very difficult to sharpen a chain correctly without theright equipment. We recommend that you use our filegauge. This will help you obtain the maximum kickbackreduction and cutting performance from your chain. (22)See instructions under the heading Technical data forinformation about sharpening your chain.Sharpening cutting teethTo sharpen cutting teeth you will need a round file and afile gauge. See instructions under the heading Technicaldata for information on the size of file and gauge that arerecommended for the chain fitted to your chain saw.• Check that the chain is correctly tensioned. A slackchain will move sideways, making it more difficult tosharpen correctly.• Always file cutting teeth from the inside face. Reducethe pressure on the return stroke. File all the teeth onone side first, then turn the chain saw and file the teethon the other side.• File all the teeth to the same length. When the lengthof the cutting teeth is reduced to 0.16 inch (4 mm) thechain is worn out and should be replaced. (23)General advice on adjusting depth gauge setting• When you sharpen the cutting tooth (A) the depthgauge setting (C) will decrease. To maintain optimalcutting performance the depth gauge (B) has to befiled down to achieve the recommended depth gaugesetting. See instructions under the heading Technicaldata to find the correct depth gauge setting for yourparticular chain. (24)Adjustment of depth gauge setting• The cutting teeth should be newly sharpened beforeadjusting the depth gauge setting. We recommendthat you adjust the depth gauge setting every thirdtime you sharpen the cutting teeth. NOTE! Thisrecommendation assumes that the length of thecutting teeth is not reduced excessively.• You will need a flat file and a depth gauge tool. Werecommend that you use our depth gauge tool toacheive the correct depth gauge setting and bevel forthe depth gauge.• Place the depth gauge tool over the chain. Detailedinformation regarding the use of the depth gauge tool,will be found on the package for the depth gauge tool.Use the flat file to file off the tip of the depth gauge thatprotrudes through the depth gauge tool. The depthgauge setting is correct when you no longer feelresistance as you draw the file along the depth gaugetool. (25)Tensioning the chainThe more you use a chain the longer it becomes. It istherefore important to adjust the chain regularly to take upthe slack.Check the chain tension every time you refuel. NOTE! Anew chain has a running-in period during which youshould check the tension more frequently.Tension the chain as tightly as possible, but not so tightthat you cannot pull it round freely by hand. (26)• Release the knob by folding it out. (30)• Turn the knob anti clockwise to loosen the bar cover.(31)• Adjust the tension on the chain by turning the wheeldown (+) for tighter tension and up (-) to loosen thetension. (32)• Tighten the bar clutch by turning the knob clockwise.(33)• Fold the knob back in to lock the tensioning. (34)! WARNING! Departure from thesharpening instructions considerablyincreases the risk of kickback.! WARNING! The risk of kickback isincreased if the depth gauge setting istoo large!! WARNING! A slack chain may jump offthe bar and cause serious or even fatalinjury.