This manual covers the Hyster C098 series electric motor rider forklifts, including models E3.50XL, E4.00XL, E4.50XL, and E5.50XL, manufactured up to serial number C098V06229X. These Class 1 forklifts are designed for demanding industrial applications, built with a focus on reliable performance and efficient operation. This guide is intended for the Pre-SEM generation of these robust machines, ensuring comprehensive support for their operational longevity. The purpose of this service repair manual is to provide detailed technical information for maintenance, repair, and troubleshooting of your Hyster forklift. It includes coverage for essential systems such as the battery, brake system, DC motor, differential, hydraulic and steering systems, frame, mast, and tilt cylinders. Additionally, this manual offers in-depth guidance on motor controllers, electrical checks, scheduled maintenance, and troubleshooting procedures, supported by schematics and diagrams. It also details specifications for various components, including fasteners, gauges, and control valves, to assist owners, mechanics, and technicians in maintaining optimal vehicle performance and safety.