Abstract: A working tool (10) includes a gasoline motor (11), a working head (12), and a shaft assembly (14) extending between and mechanically coupling the engine and the working head. The shaft assembly includes a frame tube (18), a flexible drive cable (19), and an elongated coaxial drive cable centering device or support member (20) positioned between the drive cable and the frame tube. The support member includes a sheath (21) and a plurality of centering members (22). The centering members includes contacting elements (23) in the form of spiral or a flexible rubber bushings having a central tube (34) and a plurality of spaced annular rings or flanges (35).

Abstract: A working tool (10) includes a gasoline motor (11), a working head (12), and a shaft assembly (14) extending between and mechanically coupling the engine and the working head. The shaft assembly includes a frame tube (18), a flexible drive cable (19), and an elongated coaxial drive cable centering device or support member (20) positioned between the drive cable and the frame tube. The support member includes a sheath (21) and a plurality of centering members (22). The centering members includes contacting elements (23) in the form of spiral or a flexible rubber bushings having a central tube (34) and a plurality of spaced annular rings or flanges (35).