This manual covers the HYSTER CHALLENGER H177 series forklifts, including models H45XM, H50XM, H55XM, H60XM, and H65XM. These robust machines are engineered for demanding industrial environments, offering reliable performance for maintenance, assembly, disassembly, and servicing tasks. The forklifts are available with various engine options, including MAZDA M4-2.0G, M4-2.2G, Perkins 704-26 (2.6L), GM 3.0 LITER, and GM 4.3L EPA Compliant, and support both LPG and Gasoline fuel types. Their construction emphasizes durability and operational efficiency, making them a dependable choice for material handling operations. This comprehensive Service Repair Manual and Parts Manual provides detailed information essential for the upkeep and repair of your HYSTER forklift. It includes extensive coverage of maintenance procedures for critical systems such as the engine, cooling, fuel, transmission, drive and steering axles, brakes, and hydraulics, along with mast repair and periodic maintenance schedules. The manual also features troubleshooting guides for specific engine models and electronic control modules, system diagrams, schemes, and actual photo illustrations to aid in diagnosis and repair. Furthermore, it details parts information for various mast types and options, ensuring you have the resources needed to maintain your equipment effectively.