Connecting piece

An elastic connecting piece for connecting a carburetor to an inlet channel of an internal combustion engine of a portable handheld motor-driven work apparatus, said connecting piece comprising:

• an annular conduit-like member defining a longitudinal direction;
• said annular conduit-like member having an expansion fold for compensating for relative position changes between said carburetor and said engine;
• said expansion fold being changed between a collapsed length (a) whereat said expansion fold is collapsed and an expanded length (b) whereat said expansion fold is open;
• said expansion fold subdividing said conduit-like member into a carburetor-end section and an engine-end section;
• said carburetor-end section having a circular flow cross section and said engine-end section having an end facing toward said engine;
• said engine-end section having a flow cross section at said end which departs from a circularly-shaped flow cross section;
• and,
• said connecting piece having an essentially constant flow cross section over the entire length thereof when said expansion fold is at said collapsed length (a).