A front-mounted attachment (2) for harvester-threshers (1) for harvesting soy-beans and peas has a resiliently mounted additional cutting mechanism (4), whose cutter drive (5) can be derived from the drive of the cutting mechanism of the harvester-thresher (1). To ensure a simple and trouble-free operation, the cutter drive (5) includes an oil-bath transmission (6) to be connected to the drive of the cutting mechanism of the harvester-thresher (1) via a belt drive (7), which oil-bath transmission is mounted on a lateral runner (8) pivotally mounted at the cutting mechanism (10) of the harvester-thresher so as to be swivelled about a horizontal transverse axis (A) by a swivel arm (9).
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