This workshop service repair manual provides comprehensive information for the Mercury Mariner, a water-cooled jet outboard engine designed for propulsion. This manual details the engine's jet drive system and its 45 HP output. The engineering of the Mercury Mariner is focused on reliable performance in its intended marine applications. This English-language manual, spanning hundreds of pages, is an essential resource for maintaining and repairing your Mercury Mariner. It covers critical areas such as scheduled maintenance, lubrication requirements, and detailed procedures for the electrical and ignition systems. Owners, technicians, and mechanics will find the information within this manual invaluable for ensuring the longevity and optimal performance of their vessel's propulsion system.