Caterpillar offers the only wheel feller buncher with ground level servicing, including fuel fill. But whether you choose wheel or track, Caterpillar feller bunchers provide rugged, reliable harvesting operation with easy maintenance and low operating costs. They feature smoother hydraulic performance, increased engine HP, a more comfortable operator station and better right side operator visibility. Many models are zero tail swing machines. A robust undercarriage utilizes proven components, customized for demanding forestry conditions.