Hand-operated tool, e.g. chain saw; has internal combustion engine; has membrane carburetor with fuel-filled regulating chamber and regulating membrane and has engine-operated cooler fan

摘要

The tool has an internal combustion engine with a membrane carburetor (2). The carburetor has a fuel filled regulating chamber with a regulating membrane, which is bordered by a compensation space (7) on the side opposite the regulating chamber, and a cooler fan (4) driven by the engine to generate an air stream (3). The compensation space is connected by a regulating pressure line to an area of the air stream to transmit air pressure.