Makita EA3500S Instruction Manual

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261 24/5Chain typ290Chain typ492Files and how to work with themUse a special saw chain round file for sharpening. Standardround files are unsuitable.Type 492: Saw chain round file, dia. 4.0 mmType 290: Saw chain round file, dia. 4.5 mm.The file should cut only when pushed forwards (arrow). Lift thefile when leading it backwards.First sharpen the shortest cutter. The length of this cutter is thenthe standerd for all other cutters of the chain.New saw teeth must be filed to the exact same shape as theused teeth, including on their running surfaces.File depending on chain type (90∞ or 10∞ to the guide bar).A file holder makes file guidance easier. It is marked for thecorrect sharpening angle of:α = 25∞α = 30∞α = 35∞(keep the marks parallel with the chain when filing, see illustration)and limits the cut depth to the correct 4/5 of the file diameter.After having sharpened the chain, the height of the depth limitermust be checked by means of a chain gauge. See ÑAccessoriesìfor the order number.Correct even the smallest excess height with a special flatfile (1).Round off the front of the depth limiter (2).α