This manual covers the Mercury Mariner 20 HP outboard, a robust and reliable engine designed for a variety of marine applications. Engineered for performance and durability, this water-cooled, two-cylinder outboard features a CDI ignition system and carburetor fuel induction, delivering consistent power for your boating needs. Its compact design and manual tilt system make it user-friendly, while the aluminum alloy propeller ensures efficient propulsion. With a focus on quality and longevity, the Mercury Mariner is built to provide dependable service on the water. This comprehensive Service Repair Workshop Manual in English provides essential information for the maintenance and repair of your Mercury Mariner 20 HP outboard. It details critical procedures, including lubrication requirements with specific gear oil recommendations and capacities, as well as service schedules for initial and regular maintenance. Technical specifications, such as bore, stroke, gear ratio, and weight, are included to aid in understanding the engine's mechanics. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure optimal performance and longevity of the Mercury Mariner.