This service and repair manual covers Suzuki DF90, DF100, DF115, and DF140 outboard motors manufactured between 2001 and 2009. These 4-stroke outboard engines are known for their reliable performance and efficient operation, featuring Electronic Fuel Injection (EFI) and Suzuki's P.E.I. ignition system. The DF90 and DF100 models offer 1502 cc displacement and 90-100 HP respectively, while the DF115 and DF140 models provide 1825 cc displacement and 115-140 HP. With robust construction and engineering, these Suzuki outboards are designed for a wide range of marine applications, ensuring dependable power and smooth operation on the water. This comprehensive manual provides essential information for the diagnosis, repair, and scheduled maintenance of your Suzuki outboard motor. It includes detailed procedures, technical specifications, and manufacturer guidelines to ensure optimal performance and longevity. The content covers critical areas such as lubrication, fluid capacities, recommended oils, and service intervals for engine and gear oil changes, as well as spark plug and fuel filter replacements. With detailed illustrations and diagrams, this manual is an indispensable resource for dealer technicians, mechanics, and individuals seeking to maintain and repair their Suzuki DF series outboard engines.