A root crop harvester apparatus includes a transverse frame, supported to move above ground in a harvesting direction and oriented generally perpendicular to the harvesting direction. A plurality of pairs of generally upright, spaced apart puller wheels are connected to the transverse frame in a trailing orientation, having a substantially common rotational axis, and configured to contact the ground, each pair having a pinch point therebetween. The transverse frame is pivotal about an axis that is substantially aligned with the substantially common rotational axis, whereby rotation of the transverse frame collectively rotates all of the pairs of puller wheels about the common rotational axis and thereby adjusts a location of all of the pinch points with respect to the harvesting direction.
