The Hyster H006 series forklifts, including the H135FT and H155FT models, are robust industrial machines designed for demanding material handling applications. These forklifts feature internal combustion engines and are available with propane, diesel, or gasoline fuel options, depending on the specific configuration. Engineered for reliability and performance, they offer substantial lift capacities, with the H135FT capable of lifting approximately 13,500 lbs and the H155FT supporting around 15,500 lbs. Their durable construction and versatile tire options, including pneumatic and solid types, ensure suitability for various operational environments. This Workshop Service Repair Manual provides comprehensive guidance for the maintenance and repair of Hyster H006 series forklifts. It covers essential procedures for keeping these machines in optimal working condition, detailing aspects of the internal combustion engine, forklift drivetrain, and overall operational systems. The manual is intended to assist owners, technicians, and mechanics in performing routine service, troubleshooting complex issues, and understanding the technical specifications necessary for efficient and safe operation. Refer to the manual for recommended service intervals, oil types, capacities, and inspection schedules to ensure the longevity and performance of your Hyster forklift.