This manual covers the Mercury Mariner 4 HP 4-stroke outboard engine. Designed for reliable performance and efficiency, this engine is a robust choice for various marine applications. Its 4-stroke design ensures cleaner operation and better fuel economy compared to older 2-stroke models. The Mariner 4 HP is engineered for durability, making it a dependable power source for smaller boats and tenders. This comprehensive Workshop Service Repair Manual provides detailed information for the maintenance and repair of your Mercury Mariner 4 HP 4-stroke outboard. It includes essential procedures for servicing, troubleshooting, and technical specifications to ensure optimal performance and longevity. Whether you are a seasoned technician or an owner performing routine maintenance, this manual serves as an indispensable guide for keeping your engine in peak condition.