The Mercury Mariner 8 HP 2-Stroke outboard motor, produced from 1986 to 2003, represents a reliable and robust option for various watercraft applications. Engineered for durability and consistent performance, this single-cylinder, water-cooled engine features a CDI ignition system and a carburetor for fuel delivery, utilizing a pre-mix fuel/oil lubrication system with a recommended 50:1 ratio. Its outboard lower unit provides forward, neutral, and reverse gear selection, making it versatile for maneuvering in different conditions. This model is known for its straightforward design and dependable operation, making it a popular choice for recreational boating and auxiliary power needs. This Factory Service Repair Manual provides comprehensive guidance for the maintenance, repair, and troubleshooting of your Mercury Mariner 8 HP 2-Stroke outboard motor. Covering the production years from 1986 through 2003, this English-language manual details essential procedures, including recommended fuel types, gearcase oil specifications, and propeller information. It is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance and longevity of their engine, offering detailed technical specifications and safety guidelines.