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 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 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 . <EOS>