This manual covers Mercury Mariner 45 Jet, 50, 55, and 60 HP 2-stroke outboard engines. These engines are known for their robust engineering and reliability, providing dependable performance for a variety of marine applications. This guide details their operational specifications and maintenance requirements. This comprehensive service manual provides essential information for owners and technicians. It includes detailed procedures for maintenance, repair, and troubleshooting, covering all aspects of the engine's systems such as fuel, ignition, electrical, and lubrication. With clear, step-by-step instructions and zoomable illustrations, this manual is an indispensable resource for ensuring the optimal performance and longevity of your Mercury Mariner outboard engine.