Stihl 017 Instruction Manual - Page 40

Cleaning Air Filter Taking Care of Guide Bar 2 143BA022 KN 143BA054 ST 143BA055 KN Dirty air filters reduce engine power, increase fuel consumption and make starting more difficult. Clean the air filter when there is a noticeable loss of engine power. • Press down the interlock lever and set Master Control lever to "Cold Start" l • Turn the twist lock above the rear handle 90° counterclockwise • Lift off the shroud vertically. Lift filter off vertically. •• Wash filter element in a clean, non-flammable cleaning solution (e.g. warm soapy water) and then dry. Always replace a damaged filter element. • Reinstall the filter. 38 13 • Turn the bar over every time you sharpen the chain and every time you replace the chain - this avoids one-sided wear, especiallly at nose and underside of the bar. Regulary clean 1 = oil inlet hole 2 = oilway 3 = bar groove. • Measure groove depth with scale on filing gauge*or in area used most for cutting on Rollomatic bars - Chain type Chain Minimum pitch groove depth Picco-Mini 3/8" 5.0 mm (0.20") If groove depth is less than specified: • 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 rails. * Special accessory 017, 018