The Suzuki DF25 / DF30, manufactured between 2000 and 2003, represents the first generation of these robust four-stroke marine engines. Available in 25 HP and 30 HP configurations, these water-cooled units feature Electronic Fuel Injection (EFI) for efficient power delivery, complemented by ECM-controlled ignition. Designed for reliability and performance, they are engineered to meet the demands of various marine applications, ensuring dependable operation on the water. This comprehensive Service Repair Manual provides detailed information for the Suzuki DF25 / DF30 models. It covers essential maintenance procedures, including critical schedules for compensating for initial wear, lubrication recommendations for engine and gear oil, and tune-up procedures. The manual also includes in-depth guidance on electrical systems, fuel system components like the high-pressure fuel pump and injectors, power unit assemblies, drive shafts, gearcases, and propeller shafts. Troubleshooting common issues such as starting problems, overheating, and rough idling is also thoroughly addressed, making this an indispensable resource for owners and technicians alike.