This document is a service manual for Case IH Farmall tractors models 80N, 80V, 90N, 90V, 100N, 100V, 110N, and 110V. It provides specifications and repair/maintenance instructions for the tractor engines, transmissions, axles, hydraulics, electrical systems, and other components. The manual is published by CNH Industrial Italia S.p.A and is intended as a reference for tractor service technicians.