Stihl MS 211 C-BE Product Instruction Manual - Page 51
Use a file holder, For checking angles, File correctly, horizontally
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Chain type Rapid Micro (RM) Rapid Super (RS) Picco Micro (PM) Rapid Micro X (RMX, ripping chain) Rapid Micro X (RMX, ripping chain) Angle (°) AB 30 75 30 60 30 75 10 75 10 75 Cutter shapes Micro = Semi-chisel Super = Full 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. As these requirements can be met only after sufficient and constant practice: N Use a file holder A file holder must be used for manual resharpening (see table "Sharpening Tools"). The correct filing angles are marked on the file holder. 689BA025 KN For checking angles English 90° 689BA018 KN 001BA203 KN 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. File correctly N Select sharpening tools according to chain pitch. N Clamp the bar in a vise if necessary. N Lock the chain - push hand guard forward. N To rotate the chain - pull hand guard against handle to disengage the chain brake On models with Quickstop Plus, also press down the throttle trigger lockout lever. N Sharpen the chain frequently, take away as little metal as possible - two or three strokes of the file are usually enough. N Hold the file horizontally (at a right angle to the side of the guide bar) and file according to the angles marked on the file holder. Rest the file holder on the top plate and depth gauge. 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. 689BA043 KN MS 171, MS 181, MS 181 C, MS 211, MS 211 C 49