This manual covers the GCS/GCX/GPS/GPX 17-30 Series Forklift, a versatile industrial machine designed for efficient material handling. These forklifts are engineered with robust construction and reliable performance, featuring various engine options including Mitsubishi 4G54, Continental TM27/TMD27, and Waukesha D176GA. The series offers models with capacities ranging from 1700 to 3000 kg, equipped with either cushion or pneumatic tires, and a triple-stage upright mast for enhanced operational flexibility. They are suitable for a wide array of demanding work environments where dependable lifting and transport are essential. This comprehensive Workshop Service Repair Manual in English provides detailed guidance for the maintenance and repair of your forklift. It includes step-by-step instructions, detailed illustrations, and specific procedures for engine tune-ups, adjustments, valve clearance, and ignition timing. The manual also covers the hydraulic system, electrical components, steering, braking, and transmission systems, along with lubrication charts and tightening torque specifications. This resource is an indispensable tool for owners, technicians, and mechanics aiming to ensure the optimal performance, longevity, and safety of the GCS/GCX/GPS/GPX 17-30 Series Forklift.