Stihl MS 171 Product Instruction Manual - Page 52

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. N Find 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 a 689BA023 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") for cutting softwood in the mild weather season - no frost. Chain pitch inch 1/4 3/8 P 0.325 3/8 0.404 (mm) (6,35) (9,32) (8,25) (9,32) (10,26) Depth gauge setting (a) mm (inch) 0,65 (0.026) 0,65 (0.026) 0,65 (0.026) 0,65 (0.026) 0,80 (0.031) Lowering depth gauges The depth gauge setting is reduced when the chain is sharpened. N Use a filing gauge to check the setting every time you sharpen the chain. 1 N Place 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. N File down the depth gauge until it is level with the filing gauge. 689BA051 KN 689BA047 KN N File 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. The kickback tendency of the saw is increased if the depth gauges are too low. N Place the filing gauge on the chain - the highest point of the depth gauge must be level with the filing gauge. RSC3, RMC3, PMC3, PMMC3 The upper part of the humped drive link (with service marking) is lowered along with the depth gauge. The other parts of the humped drive link must not be filed since this may increase the kickback tendency of the saw. 689BA052 KN 689BA044 KN 50 MS 171, MS 181, MS 181 C, MS 211, MS 211 C