This Service Repair Manual covers Suzuki Outboard Motors manufactured between 2001 and 2009, specifically the DF90, DF100, DF115, and DF140 models. These 4-stroke engines are renowned for their reliability and advanced engineering, featuring Multi-port Electronic Fuel Injection (EFI) for optimal performance and fuel efficiency. With power outputs ranging from 90 to 140 horsepower and displacements of 1503 cc or 2044 cc, these outboards are designed for a wide array of boating applications, offering robust propulsion and smooth operation. The Suzuki P.E.T. ignition system and water-cooled design further contribute to their dependable performance on the water. This comprehensive manual provides essential information for the maintenance and repair of your Suzuki outboard motor. It details critical procedures, including lubrication requirements, oil capacities, and scheduled maintenance intervals, such as the initial 20-hour or 3-month service and subsequent 100-hour or 6-month intervals. Technical specifications, troubleshooting guidance, and information on the power trim and tilt system are also included. This English-language manual is an indispensable resource for owners, technicians, and mechanics seeking to ensure the longevity and optimal performance of their DF90, DF100, DF115, or DF140 outboard engines.