This Service Repair Shop Manual provides comprehensive information for the Komatsu FB22H-3R, FB25H-3R, FB25HG-3R, and FB30H-3R series forklifts (Series 4024). These electric forklifts are engineered for efficient material handling in various indoor and outdoor environments. Built with Komatsu's commitment to quality and reliability, these models are designed to deliver robust performance and operational longevity, ensuring your material handling needs are met with precision and durability. The purpose of this manual is to serve as a definitive guide for maintaining and repairing these Komatsu forklifts. It covers essential areas including general information, service procedures, diagnostics, and detailed technical specifications for critical components such as the drive motor, gearbox, steering system, brake system, and hydraulic equipment. By following the outlined maintenance schedules and repair instructions, owners, mechanics, and technicians can ensure optimal performance, prevent premature failures, and maximize the operational life of their equipment.