This manual covers the Mercury Mariner outboard motor, model Mariner, from the 2002 model year, part of the First Generation (2002-2006). Engineered for reliability and performance, this 4-stroke outboard features Electronic Fuel Injection (EFI) and is available in the 30-40 HP range. With a displacement of 767cc, a bore and stroke of 67mm x 73mm, and a compression ratio of 9.5:1, it is designed for efficient operation within a maximum RPM range of 5000-6000 RPM. The water-cooled system ensures optimal operating temperatures, while the CDI ignition system provides reliable spark. This outboard is equipped with an Outboard Drive system featuring a typical 2.15:1 gear ratio and Forward-Neutral-Reverse shifting. This Service Repair Manual in English provides comprehensive guidance for maintaining and repairing your Mercury Mariner outboard. It details essential procedures for lubrication, including recommended NMMA Certified FC-W Outboard Oil (SAE 25W-40) and an approximate oil capacity of 2.1 liters. The manual outlines crucial maintenance intervals, such as the initial 10-hour break-in period and regular 100-hour or annual service. Technical specifications cover engine configuration, fuel requirements (unleaded gasoline, 87 octane minimum), electrical system details like the 10 Amp alternator output, and propulsion features such as likely Power Trim and Tilt. This resource is invaluable for owners and technicians seeking to ensure the longevity and optimal performance of their Mariner outboard.