This manual covers the Mitsubishi FD80 and FD90 Forklift Trucks, robust internal combustion counterbalance forklift trucks known for their reliability and durability in demanding environments. These models, equipped with the 6D16 Diesel Engine, offer substantial lift capacities, with the FD80 supporting approximately 8,000 lbs and the FD90 approximately 9,000 lbs. The engineering quality of these forklifts ensures consistent performance, making them a dependable choice for various material handling operations. This comprehensive Service Repair Workshop Manual provides essential information for owners, maintenance technicians, and service centers. It details maintenance procedures, including routine service, fluid checks, and filter replacements, alongside in-depth troubleshooting guides and repair instructions for all major systems. Coverage includes the 6D16 Diesel Engine, 2-speed and 3-speed powershift transmissions, chassis, mast and forks, hydraulic system, brake system, and steering system. The manual's original factory content, featuring clear text and high-quality diagrams, is designed to facilitate accurate maintenance and repairs, saving time and money while ensuring the longevity of your equipment.