This manual covers the Suzuki DF90, DF100, DF115, and DF140 outboard motors manufactured between 2001 and 2009. These 4-stroke engines are renowned for their robust engineering and reliable performance, designed to meet the demands of various marine applications. The comprehensive coverage ensures that owners and operators can maintain these powerful units for optimal functionality and longevity. The purpose of this Service Repair Manual is to provide detailed guidance for the maintenance, repair, and troubleshooting of your Suzuki outboard motor. It includes information on general procedures, periodic maintenance schedules, and specific instructions for engine control systems, electrical components, fuel systems, power units, mid-sections, power trim and tilt mechanisms, lower units, and wire/hose routing. With step-by-step instructions and numerous illustrations, this manual serves as an essential resource for anyone responsible for the upkeep of these engines.