This manual covers the Hyster D135 series of Walkie/Rider Forklifts, including the W40XL, W60XL, B40XL, and B60XL models. These industrial battery-powered forklifts are engineered for robust performance in demanding environments. Their design emphasizes reliability and efficiency, making them suitable for a wide range of material handling tasks. The comprehensive nature of this documentation ensures that operators and technicians have access to the detailed information required to maximize the operational lifespan and productivity of these machines. This Service Repair and Parts Manual provides essential information for the maintenance, assembly, disassembly, and servicing of your Hyster forklift. It includes detailed coverage of critical systems such as the frame, DC motor, master drive unit, steering, brakes, hydraulic system, and various motor controllers. With specifications, diagrams, real photo illustrations, and schemes, this manual is an indispensable resource for troubleshooting, performing periodic maintenance, and understanding the electrical and mechanical components. It also includes fastener information in both inch (SAE) and metric standards.