This service repair manual covers the Mercury Mariner Outboard, a powerful 115 HP marine engine. Engineered for reliability and performance, the Mariner Outboard is designed to meet the demands of various watercraft applications. Its robust construction and advanced engineering ensure consistent operation and durability, making it a trusted choice for boaters seeking dependable propulsion. This comprehensive manual provides detailed instructions and specifications for maintaining and repairing your Mercury Mariner Outboard. It covers essential areas including general maintenance, engine and transmission service, brake systems, electrical and cooling systems, fuel injection, and chassis components. With this guide, owners and technicians can perform diagnostics, troubleshooting, and repairs efficiently, ensuring the longevity and optimal performance of the outboard.