This manual covers the Clark SF20-30D/L/G and CMP20-30D/L/G series of industrial vehicles. These models are engineered for robust performance and reliability in demanding operational environments. The comprehensive coverage within this document ensures that users have access to the detailed information necessary to understand and utilize these machines effectively. This Factory Service/Repair/Workshop Manual, identified as SM-688, provides essential guidance for maintenance and repair. It includes detailed procedures for all repair aspects, covering engine specifications for gasoline, LPG, and specific diesel variants, as well as transaxle, steering, brake, and hydraulic systems. Additionally, mast maintenance, circuit diagrams, and highly detailed exploded pictures and diagrams with step-by-step instructions are included, making it an indispensable resource for local dealer and mechanic equivalent personnel.