This workshop service manual covers the CLARK ESM Forklift Series, including models ESM12, ESM15, ESM15S, ESM17, ESM20, ESM22, and ESM25. These forklifts are engineered for robust performance and reliability in demanding industrial environments. The series features advanced electrical systems, including various control panels and efficient drive motors, alongside comprehensive hydraulic systems for precise operation. The design emphasizes durability and ease of maintenance, making the ESM Forklift Series a dependable choice for material handling needs. This manual provides essential information for the maintenance, repair, and troubleshooting of your CLARK ESM Forklift. It details periodic maintenance schedules, lubrication charts, and specific procedures for battery handling, brake systems, and hydraulic fluid management. Technical specifications, electrical and hydraulic diagrams, and troubleshooting guides are included to assist owners, mechanics, and technicians. The goal is to ensure optimal performance and longevity of the forklift through proper care and servicing.