This service repair workshop manual provides comprehensive information for the Mitsubishi 4G61 engine. This inline-4 cylinder engine, with a displacement of 1.6 liters (1597cc), was available in naturally aspirated or turbocharged variants, and featured either SOHC or DOHC valvetrain configurations depending on the application. Fuel delivery could be via carburetor or fuel injection, and the engine utilized a water-cooled system. The 4G61 engine is known for its robust engineering and adaptability across various vehicle platforms, offering a balance of performance and efficiency. This manual is designed to assist owners, mechanics, and technicians in understanding, maintaining, and repairing vehicles equipped with the 4G61 engine. It covers essential maintenance procedures, including recommended oil types and capacities, as well as details on spark plug specifications and service intervals. Technical specifications, troubleshooting guidance, and information on associated transmission types are also included. By referencing the detailed procedures and data within this English-language manual, users can ensure the optimal performance and longevity of their vehicle.