Agricultural vehicle (1) with a header (5) comprising multiple row units each comprising a feed/snapping unit (10) and a chopping unit (11), wherein the header comprises a first power transmission shaft (16) for driving the feed/snapping units (10), the header comprising a second power transmission shaft (17) connected via a drivetrain (18) to a drive (19) at the agricultural vehicle, wherein each chopper unit (11) comprises a safety clutch (22) and is connected via the safety clutch to the second power transmission shaft (17), wherein at least one torque sensor (29) is provided the second power transmission shaft (17), drivetrain (18) or drive (19), which torque sensor (19) is operationally connected to a torque fluctuation monitor adapted to recognize a predetermined change in torque fluctuation indicating a safety clutch (22) slip, the torque fluctuation monitor being operationally connected to a user interface for signaling the safety clutch slip.
