Stihl MS 150 C-E Instruction Manual - Page 33

NOTICE Always slacken off the chain again after finishing work. The chain contracts as it cools down. If it is not slackened off, it can damage the crankshaft and bearings. Short-term storage Wait for engine to cool down. Keep the machine with a full tank of fuel in a dry place, well away from sources of ignition, until you need it again. Long-term storage See "Storing the machine" English Taking Care of the Guide Bar 2 Chain type Picco Rapid Picco Rapid Rapid Chain pitch 1/4" P 1/4" 3/8" P 3/8"; 0.325" 0.404" Minimum groove depth 0.16" (4.0 mm) 0.16" (4.0 mm) 0.20" (5.0 mm) 0.24" (6.0 mm) 0.28" (7.0 mm) If groove depth is less than specified: N Replace the guide bar. The drive link tangs will otherwise scrape along the bottom of the groove - the cutters and tie straps will not ride on the bar rails. 143BA026 KN 1 3 N Turn the guide bar over - every time you sharpen the chain and every time you replace the chain - this helps avoid one-sided wear, especially at the nose and underside of the bar. N Regularly clean the oil inlet hole (1), the oilway (2) and the bar groove (3). N Measure the groove depth - with the scale on the filing gauge (special accessory) - in the area used most for cutting. MS 150 TC 31