This manual covers the Mercury Mariner 75/90 Hp 4-stroke outboard engines, starting from model year 2000. These engines are engineered for reliability and performance, offering robust power output for various marine applications. The design emphasizes durability and efficient operation, making them a dependable choice for boat owners and operators. This service repair manual provides comprehensive information to ensure these outboards continue to perform at their best. The purpose of this English-language service repair manual is to provide detailed guidance for the maintenance, repair, and diagnosis of your Mercury Mariner 75/90 Hp 4-stroke outboard. It includes information on all major components, from the powerhead and mid-section to the lower unit and electrical systems. With clear, step-by-step instructions, zoomable illustrations, exploded views, and color diagrams, this manual is an essential resource for professional technicians, mechanics, workshops, and DIY enthusiasts seeking to service, restore, rebuild, or maintain their engines.