This manual covers the Mercury Mariner M2 Jet Drive, produced from 1999 to 2004. This first-generation model features a 210 HP outboard engine, a water-cooled system, and an impeller-driven water jet transmission. Designed for reliable performance, the M2 Jet Drive is engineered for a variety of marine applications, offering a robust and capable propulsion solution. This Factory Service Repair Manual in English provides comprehensive guidance for maintaining and repairing your Mercury Mariner M2 Jet Drive. It details essential procedures for lubrication, cooling system maintenance, spark plug replacement, and filter changes, along with technical specifications for engine bore, stroke, compression ratio, and recommended fuel octane. This manual is an indispensable resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of the vessel.