The Hyster A187 series forklifts, including the S40XL, S50XL, and S60XL models, are robust Class 4 internal combustion engine trucks designed for demanding material handling applications. These cushion-tire forklifts are engineered for reliability and efficiency, featuring powerful internal combustion engines from manufacturers such as GM, Isuzu, and Mazda, with options for gasoline carburetor or LPG fuel systems. Their construction incorporates advanced components like single-speed powershift transmissions, robust lift and tilt cylinders, and sophisticated mast designs, ensuring optimal performance and durability in various operational environments. This comprehensive service repair factory manual provides essential information for maintaining and repairing your Hyster A187 forklift. It covers a wide range of topics, including detailed procedures for periodic and preventative maintenance, in-depth system diagnostics, and repair instructions for critical components such as the cooling, brake, hydraulic, and electrical systems. With clear, step-by-step instructions, zoomable illustrations, and detailed component explosions, this manual is an indispensable resource for professional technicians, mechanics, and DIY individuals seeking to service, restore, rebuild, or diagnose these forklifts effectively.