Self-propelled agricultural harvester, comprising: a frame which extends in a forward movement direction, is supported by way of means (14, 16) which are situated in engagement with the soil, and can be moved in the forward direction by way of the said means (14, 16), working members (26, 28) for receiving and/or processing crops, which working members (26, 28) can be driven via a drive belt which can be driven by way of a pulley wheel with a rotational axis which is oriented horizontally and transversely with respect to the forward direction, an internal combustion engine (36, 38) which is supported on the frame, with a crankshaft (40, 42) which extends in the forward direction, and an angular gear mechanism (52, 64) which is arranged in front of the internal combustion engine (36, 38) in the forward direction, is fastened to the housing of the internal combustion engine (36, 38), and can be drive-connected or is drive-connected to the crankshaft (40, 42) and to a transversely arranged transverse shaft (54, 58, 80, 90), the transverse shaft (54, 58, 80, 90) being capable of being connected or being connected to the pulley wheel, and a section of the transverse shaft (54, 58, 80, 90) extending through the pulley wheel, and a clutch which serves to connect and disconnect the drive belt being connected on that side of the pulley wheel which faces away from the angular gear mechanism (52, 64) to the section of the transverse shaft (54, 58, 80, 90), and being connected on the output side by way of a hollow shaft, within which the section of the transverse shaft (54, 58, 80, 90) is situated, to the pulley wheel and a drive train of a hydraulic pump for driving a hydraulic motor for driving a draw-in conveyor and/or harvesting attachment. a frame which extends in a forward movement direction, is supported by way of means (14, 16) which are situated in engagement with the soil, and can be moved in the forward direction by way of the said means (14, 16), working members (26, 28) for receiving and/or processing crops, which working members (26, 28) can be driven via a drive belt which can be driven by way of a pulley wheel with a rotational axis which is oriented horizontally and transversely with respect to the forward direction, an internal combustion engine (36, 38) which is supported on the frame, with a crankshaft (40, 42) which extends in the forward direction, and an angular gear mechanism (52, 64) which is arranged in front of the internal combustion engine (36, 38) in the forward direction, is fastened to the housing of the internal combustion engine (36, 38), and can be drive-connected or is drive-connected to the crankshaft (40, 42) and to a transversely arranged transverse shaft (54, 58, 80, 90), the transverse shaft (54, 58, 80, 90) being capable of being connected or being connected to the pulley wheel, and a section of the transverse shaft (54, 58, 80, 90) extending through the pulley wheel, and a clutch which serves to connect and disconnect the drive belt being connected on that side of the pulley wheel which faces away from the angular gear mechanism (52, 64) to the section of the transverse shaft (54, 58, 80, 90), and being connected on the output side by way of a hollow shaft, within which the section of the transverse shaft (54, 58, 80, 90) is situated, to the pulley wheel and a drive train of a hydraulic pump for driving a hydraulic motor for driving a draw-in conveyor and/or harvesting attachment.