A rotor feeder unit for an agricultural baler. The rotor feeder unit includes a rotor feeder carrying a set of tines, a rotor feeder unit bottom distant from the rotor feeder forming a lower boundary of a conveying channel through the rotor feeder unit, and scrapers placed in conveying direction behind the rotor feeder. The rotor feeder is rotatable about an axis of rotation. The scrapers extend in between the tines and have a leading face cooperating with the tines. The rotor feeder unit also includes a scraper position adjusting arrangement adapted for displacement of the leading face of the scrapers relative to the rotor feeder unit bottom. The scraper position adjusting arrangement is further adapted for rotating the scrapers about the axis of rotation of the rotor feeder for angularly displacing the leading face of the scrapers relative to the rotor feeder unit bottom.
