Work device comprising a combustion motor, wherein - the work device is a tamping apparatus for ground compaction having a tamping unit or a motor-operated drill hammer and/or impact hammer having a tamping unit; and wherein the combustion motor is provided, having - a cylinder in which a piston is movable axially in a reciprocating manner in order to rotationally drive a motor shaft; - a carburettor device for producing an air-fuel mixture for a combustion procedure in the cylinder; - a fan device for producing a cooling air flow; - a cooling air guide for guiding the cooling air flow produced by the fan device; - a flow splitter for splitting the cooling air flow into a cylinder cooling air flow and into a carburettor cooling air flow; - a cylinder cooling air flow guide for guiding the cylinder cooling air flow to an outer wall of the cylinder; and having - a carburettor cooling air flow guide for guiding the carburettor cooling air flow to an outer wall of the carburettor device; wherein - the two cooling air flows (13, 14) are guided separately from one another to the cylinder and the carburettor device such that the cylinder cooling air flow is guided to the cylinder, whereas the carburettor cooling air flow is guided to the carburettor device; - the cooling air guide has a blower cover; - the blower cover encloses the fan device at least partially; - the cylinder cooling air flow guide and the carburettor cooling air flow guide are formed in the blower cover; - the blower cover has a plurality of air inlets in the form of circular segment-shaped air slits, via which ambient air is drawn in by the fan device; and wherein - a partition wall is provided between the cylinder and the carburettor device in order to maintain the separation of the carburettor cooling air flow from the cylinder cooling air flow. - the work device is a tamping apparatus for ground compaction having a tamping unit or a motor-operated drill hammer and/or impact hammer having a tamping unit; and wherein - a cylinder in which a piston is movable axially in a reciprocating manner in order to rotationally drive a motor shaft; - a carburettor device for producing an air-fuel mixture for a combustion procedure in the cylinder; - a fan device for producing a cooling air flow; - a cooling air guide for guiding the cooling air flow produced by the fan device; - a flow splitter for splitting the cooling air flow into a cylinder cooling air flow and into a carburettor cooling air flow; - a cylinder cooling air flow guide for guiding the cylinder cooling air flow to an outer wall of the cylinder; and having - a carburettor cooling air flow guide for guiding the carburettor cooling air flow to an outer wall of the carburettor device; - the two cooling air flows (13, 14) are guided separately from one another to the cylinder and the carburettor device such that the cylinder cooling air flow is guided to the cylinder, whereas the carburettor cooling air flow is guided to the carburettor device; - the cooling air guide has a blower cover; - the blower cover encloses the fan device at least partially; - the cylinder cooling air flow guide and the carburettor cooling air flow guide are formed in the blower cover; - the blower cover has a plurality of air inlets in the form of circular segment-shaped air slits, via which ambient air is drawn in by the fan device; and wherein - a partition wall is provided between the cylinder and the carburettor device in order to maintain the separation of the carburettor cooling air flow from the cylinder cooling air flow.