Patent ID: 6234458
Filing Date: 2001-05-22
Classification: F02B,F02M,Y10S

Abstract:
A carburetor for an internal combustion engine of a hand-held working tool, said carburetor comprising:a housing (1) having an intake channel (2);a fuel-filled control chamber (8) mounted in said housing (1);a fuel channel (14) connected to said control chamber (8) and said intake channel (2);a control valve (15) mounted in said fuel channel (14);said control valve (15) having a valve member (16);a control screw (17) mounted in said housing (1) and acting on said valve member (16) for adjusting said valve member (16);a cap (30) fixedly mounted on said control screw (17); said cap (30) having a stop (40);a counter stop (60) mounted on said housing (1) in a rotational path of said stop (40);an auxiliary locking device (41) for securing said cap (30) relative to said housing (1) positioned between said cap (30) and said housing, said auxiliary locking device (41) having an adjusting range of approximately 270.degree.;said locking device (41) having a locking member (42) and counter locking members (43) cooperating with said locking member (42) for locking said cap (30) in one of various preset positions relative to said housing (1), said locking device adapted to secure said control screw (17) into a plurality of locking positions independently of said stop (40) and said counter stop (60).