Stihl MS 261 C-Q Product Instruction Manual - Page 48
Storing the Machine, Checking and Replacing the, Chain Sprocket
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English Storing the Machine For periods of 3 months or longer N Drain and clean the fuel tank in a well ventilated area. N Dispose of fuel properly in accordance with local environmental requirements. N Run the engine until the carburetor is dry - this helps prevent the carburetor diaphragms sticking together. N Remove the saw chain and guide bar, clean them and spray with corrosion inhibiting oil. N Thoroughly clean the machine - pay special attention to the cylinder fins and air filter. N If you use a biological chain and bar lubricant, e.g. STIHL BioPlus, completely fill the chain oil tank. N Store the machine in a dry, high or locked location, out of the reach of children and other unauthorized persons. Checking and Replacing the Chain Sprocket N Remove chain sprocket cover, saw chain and guide bar. N Release chain brake - pull hand guard against the front handle Fit new chain sprocket - after use of two saw chains or earlier - if the wear marks (arrows) are deeper than 0.02 in (0.5 mm) - otherwise the service life of the saw chain is reduced - use check gauge (special accessory) to test Using two saw chains in alternation helps preserve the chain sprocket. Use only STIHL original chain sprockets to help ensure reliable functioning of the chain brake. 001BA121 KN 001BA122 KN 5 62 1 4 3 62 1 N Use a screwdriver to remove the Eclip (1) N Remove the washer (2) N Remove rim sprocket (3) (if so equipped), clutch drum (4) and needle cage (6). N Inspect transport profile for rim sprocket on the clutch drum (4) - if there are also heavy signs of wear, also replace the clutch drum N Remove clutch drum with integrated spur chain sprocket (5) (if so equipped) including needle cage (6) from the crankshaft - for powerheads with Quickstop Plus chain brake system, depress throttle trigger lockout beforehand 46 MS 261 C-Q