This workshop service repair manual covers the Mercury Mariner 30 HP outboard motor, a 2-cylinder engine designed for reliable performance. Engineered with quality and durability in mind, this outboard motor is built to provide consistent power and efficiency for various marine applications. Its robust construction and straightforward design ensure dependable operation, making it a practical choice for boaters seeking a capable and trustworthy propulsion system. This comprehensive manual provides detailed information essential for the maintenance, repair, and understanding of your Mercury Mariner 30 HP outboard motor. It includes full maintenance procedures, electrical system troubleshooting, and technical specifications. With step-by-step instructions, hundreds of photos and illustrations, and clear guidance through numbered instructions, cautions, and warnings, this manual is an indispensable resource for owners and technicians alike to ensure optimal performance and longevity of the engine.