This workshop service repair manual covers the Mercury Mariner Sea Pro 15 HP outboard motor. Engineered for reliability and performance, this outboard motor is designed for a variety of marine applications. Its robust construction and efficient 15 HP power output make it a dependable choice for boaters. The manual provides comprehensive information to ensure the optimal functioning of your Mercury Mariner outboard. This manual serves as an essential resource for maintaining and repairing your Mercury Mariner Sea Pro 15 HP outboard motor. It includes detailed step-by-step instructions, hundreds of photos and illustrations, and critical notes, cautions, and warnings to guide you through every procedure. Coverage encompasses fuel system, electrical and ignition systems, powerhead, mid-section, lower unit, manual starter, and attachments/control linkage. Troubleshooting and electrical diagnostics are also thoroughly addressed, ensuring you can effectively maintain and service your outboard.