This manual covers the Mercury Mariner, a marine engine designed for a range of watercraft, produced between 2001 and 2008. Featuring a 240 HP Outboard Jet Drive powered by an Electronic Fuel Injection system, this engine is engineered for robust performance and reliability on the water. Its jet drive transmission provides efficient propulsion, making it a suitable choice for various boating applications where powerful and dependable operation is essential. This comprehensive Service Repair Manual in English provides detailed guidance for the maintenance, troubleshooting, and repair of your Mercury Mariner engine. It covers critical areas such as recommended lubricants, service intervals, fuel system maintenance, and ignition system specifics. By following the procedures outlined within this manual, owners and technicians can ensure optimal performance, longevity, and safe operation of their Mercury Mariner jet drive engine.