Stihl MS 311 User Manual - Page 33
Installing, Cylinder / Crankshaft
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4903RA069 TG 4903RA073 TG 6.5 Cylinder / Crankshaft 1 - Remove the shroud, b 6.4 1 - Pull off the boot and unscrew the spark plug, - Remove the fan housing, b 8.2 : Use a suitable drift (1) to drive out the screws (arrow). Installing - Remove the filter base, b 12.3 - Remove the carburetor, b 12.5 - Remove the manifold, b 12.9 - Remove the muffler, b 6.1 : Use the lug (arrow) to pry the cylinder (1) upwards. - Remove the cylinder with crankshaft. 2 - Remove the decompression valve, b 6.9 - Remove AV spring from handlebar, b 9.4 1 1 : Use a suitable drift (2) to drive home the screws (1). - Reassemble in the reverse sequence. : Take out the screws (arrows). : Pull the crankshaft (1) out of the bearing seats (arrows). : Carefully pull the crankshaft (1) with piston out of the cylinder. - Check the crankshaft and ball bearings and replace if necessary, b 6.6 - Inspect the piston and piston rings and replace if necessary, b 6.7, b 6.8 4903RA071 TG 4903RA072 TG 4903RA074 TG 32 MS 311, MS 391