This document provides parts information for Massey Ferguson tractors models MF 3315, 3325, 3330, 3340, 3350, and 3355. It includes detailed parts lists and diagrams for the engine, alternator, starter, cylinder block, crankshaft, pistons, and connecting rods of the MF 3315 and 3325 tractors. The parts lists include the part numbers, quantities, descriptions, and any comments or replacement part notes for each component.