The Stihl WTE-9A carburetor (code 1140-120-0601) is an original spare part for Stihl MS 311, MS 391 chainsaws. Includes inlet needle, spring, inlet adjustment rocker, axle, hemispherical head screw, no. 2 gaskets, adjustment diaphragm, pump diaphragm, air shut-off valve body, no. 2 screws, screen, pump cover, throttle shaft reduction with lever, boot, spring with hook, reduction throttle, recessed countersunk screw, minimum adjuster screw, boot, main adjuster screw, spring, disc, sealing ring, idle adjuster stop screw, pump piston set, lock washer, starter throttle, hemispherical head screw, spring with hook, throttle shaft starter with lever, throttle control lever reduction, spring with hook, throttle control lever reduction MN