This manual covers the Hyster Challenger H45XM, H50XM, H55XM, H60XM, and H65XM forklifts. These industrial vehicles are engineered for demanding operational environments, offering robust construction and reliable performance. With various engine options including GM 3.0L, Isuzu 4JB1 (2.8L), Mazda M4-2.0G, GM 2.2L, and Isuzu 4JG2 (3.1L), and fuel system choices such as LPG and gasoline, these forklifts are designed for versatility and efficiency in material handling applications. This comprehensive Service Repair Manual provides detailed information for the repair and maintenance of your Hyster forklift. It includes procedures for periodic and routine preventive maintenance, which are crucial for preventing premature failure and reducing repair costs. The manual covers all major systems and components, including the frame, engines, cooling system, fuel systems, transmission, drive axle, steering, brakes, and hydraulic systems. It is designed to be easily used by anyone, from novice owners to professional technicians, with features like bookmarking for efficient navigation.