This manual covers the Mercury Mariner Outboard 70 HP, a 2-stroke, inline-3 cylinder engine likely manufactured in the early to mid-2000s. With a displacement of approximately 1.6 liters and a power output of 70 horsepower, this carbureted outboard is designed for reliable performance on the water. Its robust construction and efficient raw water cooling system ensure durability for various marine applications. The Mariner Outboard is equipped with a CDI ignition system and a lower unit featuring forward, neutral, and reverse gears, making it a versatile choice for boaters. This Factory Service Repair Manual in English provides comprehensive guidance for the maintenance and repair of your Mercury Mariner Outboard. It details essential procedures, including lubrication with TCW3 outboard 2-stroke oil, recommended spark plug types and gaps, and fuel specifications. Technical information on the electrical, cooling, and steering systems, along with detailed specifications for engine performance and drivetrain, are also included. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their 70 HP Mariner Outboard.