This workshop service repair manual covers the Clark GPH 50, GPH 60, GPH 70, GPH 75, DPH 50, DPH 60, DPH 70, and DPH 75 forklift models. These industrial machines are engineered for demanding operational environments, offering robust performance and reliability. This manual provides comprehensive technical information to ensure these forklifts operate at peak efficiency. This extensive English-language manual, spanning 794 pages, is designed to assist owners and technicians in maintaining and repairing their Clark forklifts. It includes detailed sections on scheduled maintenance, engines, cooling systems, fuel systems, transmissions, drivetrains, wheels and tires, braking, steering, and hydraulic systems. Furthermore, it covers repair operations such as disassembly, assembly, diagnosing, and troubleshooting, supported by real photo illustrations, diagrams, and schemes to facilitate understanding and execution of tasks.