This workshop service and repair manual covers the Mercury Marine 250 Optimax Jet Drive, manufactured from 2002 onwards. This powerful 2-stroke direct injection outboard engine features a V6 configuration with 2.5-liter displacement, delivering 250 horsepower. Engineered for performance and reliability, the Optimax series is renowned for its advanced fuel injection system and robust water-cooled design. The integrated jet drive system provides exceptional maneuverability and shallow-water capability, making it suitable for a wide range of marine applications. This comprehensive English-language manual provides detailed information essential for the maintenance and repair of your Mercury Marine 250 Optimax Jet Drive. It includes in-depth coverage of diagnostics, rebuild procedures, wiring diagrams, and torque specifications. Owners, technicians, and mechanics will find clear instructions for routine maintenance, such as recommended lubrication and fluid capacities, along with guidance on troubleshooting and component replacement. This resource is designed to ensure the longevity and optimal performance of your marine engine.