This Service Repair Manual covers the Mercury Mariner outboard motor, designed for reliable performance. This engine family is known for its robust engineering and efficient operation, making it a dependable choice for various marine applications. The 100 HP gasoline-powered, water-cooled engine is built to provide consistent power and longevity. This manual provides comprehensive guidance for maintaining and repairing your Mercury Mariner outboard motor. It includes detailed repair and maintenance procedures, troubleshooting assistance, and essential technical specifications. By following the information within this document, owners and technicians can ensure the optimal performance and extended service life of the engine.