This manual covers the Hyster Challenger D177 forklift, a robust and reliable piece of industrial equipment designed for demanding operational environments. Engineered for exceptional performance and longevity, the Challenger D177 is built to handle a wide range of material handling tasks with efficiency and precision. Its versatile design accommodates various engine options, including GM 3.0L, Isuzu 4JB1 (2.8L), Mazda M4-2.0G, GM 2.2L, and Isuzu 4JG2 (3.1L), and is compatible with both LPG and Gasoline fuel types, offering flexibility for different operational needs. The single-speed powershift transmission ensures smooth power delivery for optimal productivity. The comprehensive Service Repair Manual and Parts Manual provided herein is your definitive guide to maintaining, servicing, and repairing your Hyster Challenger D177 forklift. This English-language manual details critical procedures for all major components, including the frame, engine, cooling and fuel systems, transmission, drive and steering axles, brake and hydraulic systems, and mast assemblies. It also includes essential information on electrical systems, periodic maintenance schedules, capacities, and specifications, supported by detailed diagrams and illustrations. This resource is invaluable for owners, mechanics, and technicians seeking to ensure the continued optimal performance and extended service life of their equipment.