This workshop service repair manual covers the Mercury Mariner outboard motor, produced between 1987 and 1993. This 3-cylinder, 75 HP engine features carburetion, standard ignition, and an included oil injection system, representing a robust option for marine propulsion. Its engineering prioritizes reliability and performance, making it a dependable choice for various boating applications. This comprehensive manual provides detailed information essential for the maintenance and repair of your Mercury Mariner outboard. It includes general maintenance procedures, troubleshooting guides, diagnostic information, and step-by-step repair instructions, all supported by diagrams, drawings, and photos. Coverage extends to critical systems such as electrical ignition, battery charging and starting, timing, wiring diagrams, powerhead, lower unit, gear housing, mid-section, shock absorber, power trim, installation, and tiller handle operation, ensuring owners and technicians have the resources to keep the engine in optimal condition.