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Hersteller: Poulan Dateigröße: 2.33 mb Dateiname: Unterrichtssprache:

Do not work with a dull or damaged chain as it will increase the physical effort required, produce unsatisfactory results and a higher rate of wear. N Clean the chain. N Check the chain for cracks in the links and damaged rivets. N Replace any damaged or worn parts of the chain and match the new parts to the shape and size of the original parts. Carbide-tipped saw chains (Duro) are particularly wear resistant. STIHL recommends you have your chain resharpened by a STIHL servicing dealer. It is absolutely essential to comply with the angles and dimensions The chain pitch (a) is marked on the depth gauge end of each cutter. Mark (a) Chain pitch inch mm 1/4 or 1 1/4 6,35 P, PM or 6 3/8 P 9,32 Use only special saw chain sharpening files. Other files have the wrong shape and cut. Select file diameter according to chain pitch – see table “Sharpening Tools”. You must observe certain angles when resharpening the chain cutter. A specified below. If the saw chain is incorrectly sharpened – and in particular if the depth gauge is set too low – there is an increased risk of kickback, with resulting risk of injury. The saw chain cannot be locked in place on the guide bar. Therefore, it is best to remove the chain from the bar and resharpen it on a workshop sharpening tool (FG 2, HOS, USG). B A B Filing angle Side plate angle Chain type Rapid Micro (RM) Picco Micro (PM) Angle (°) A B 30 75 30 75 689BA021 KN HT 100, HT 101, HT 130, HT 131 English For checking angles Cutter shapes 689BA018 KN90° 689BA043 KN 001BA203 KN Micro = Semi-chisel The specified angles A and B are obtained automatically if the recommended files or sharpening tools and correct settings are used. The angles must be the same on all cutters. If the angles are uneven: Chain will run roughly, not in a straight line, wear quickly and finally break. Use a STlHL filing gauge (special accessory, see table "Sharpening Tools"). This is a universal tool for checking the filing and side plate angles, depth gauge setting, cutter length and groove depth. It also cleans the guide bar groove and oil inlet holes. 689BA025 KN N Hold the file horizontally (at a right File correctly angle to the side of the guide bar) and file according to the angles As these requirements can be met only marked on the file holder. Rest the file holder on the top plate and depth after sufficient and constant practice: N Select sharpening tools according N Use a file holder to chain pitch. gauge. A file holder must be used for manual resharpening (see table "Sharpening Tools"). The correct filing angles are marked on the file holder. N If you use an FG 2, HOS or USG sharpener: Remove the chain from the bar and sharpen according to the instructions supplied with the tool. N Clamp the bar in a vise if necessary. N Sharpen the chain frequently, take away as little metal as possible – two or three strokes of the file are usually enough. N Always file from the inside to the outside of the cutter. N The file only sharpens on the forward stroke – lift the file off the cutter on the backstroke. N Avoid touching the tie straps and drive links with the file. N Rotate the file at regular intervals while filing to avoid one-sided wear. N Use a piece of hardwood to remove burrs from the cutting edge. N Check angles with the filing gauge. All cutters must be the same length. HT 100, HT 101, HT 130, HT 131 English If the cutters are not the same length, they will have different heights. This makes the chain run roughly and can cause it to break. NFind the shortest cutter and then file all other cutters back to the same length. It is best to have this work done in the workshop on an electric grinder. Depth gauge setting Lowering depth gauges The depth gauge setting is reduced when the chain is sharpened. NUse a filing gauge to check the setting every time you sharpen the chain. NPlace a filing gauge (1) that matches the chain pitch on the chain and press it against the cutter – if the depth gauge projects from the filing gauge, the depth gauge has to be lowered. NFile the top of the depth gauge parallel to the stamped service marking (see arrow) – but do not lower the highest point of the depth gauge in this process. NPlace the filing gauge on the chain – the highest point of the depth gauge must be level with the filing gauge. PMC3, PMMC3 The upper part of the humped drive link Chain pitch Depth gauge setting (a) inch (mm) mm (inch) 1/4 (6,35) 0,65 (0,026) 3/8 P (9,32) 0,65 (0,026) 689BA023 KN a 689BA047 KN1 689BA051 KN The kickback tendency of the machine is increased if the depth gauges are too low. 689BA044 KN689BA052 KN The depth gauge determines the height at which the cutter enters the wood and thus the thickness of the chip removed. a Specified distance or setting between depth gauge and cutting edge. This setting may be increased by 0.2 mm (0.008 in.) for cutting softwood in the mild weather season – no frost. N File down the depth gauge until it is (with service marking) is lowered along level wi...

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