This service repair manual covers Mercury Marine Mariner outboard motors manufactured between 2002 and 2007. These EFI 4-stroke outboard motors are designed for boating applications and are available in 150 HP, 175 HP, and 200 HP models, featuring 3.0 L or 3.3 L displacements respectively. Known for their reliable engineering, these motors are built to provide dependable performance on the water. This comprehensive manual provides essential information for maintaining and repairing your Mercury Marine Mariner outboard motor. It details critical maintenance procedures, including lubrication and recommended service intervals, along with troubleshooting guidance for common engine issues. Technical specifications, such as cooling and ignition system details, are also included. This resource is designed to assist owners, mechanics, and technicians in ensuring the optimal performance and longevity of the motor.