This manual covers the Clark EC 90 / EC 120 forklifts, part of the E912 series. These industrial vehicles are designed for demanding operational environments, emphasizing robust engineering and reliable performance. The comprehensive nature of this documentation ensures that users have access to detailed information critical for the upkeep and efficient functioning of their equipment, supporting the longevity and productivity expected from Clark machinery. The purpose of this Factory Service/Repair/Workshop Manual (SM-646) is to provide owners, dealers, and mechanics with essential guidance for maintenance, service, diagnosis, and repair. It includes step-by-step instructions and highly detailed exploded diagrams for all major systems, including electrical, drivetrain, chassis, braking, steering, and hydraulics, as well as structural components and safe maintenance practices. This English-language manual is designed to facilitate a thorough understanding and effective execution of all necessary procedures.