Your complete guide to keeping your OMC stern drive running strong. This Seloc manual covers 1986–1998 models with Ford and GM engines, giving you everything from routine maintenance to full overhauls. Step-by-step photos, exploded diagrams, and wiring schematics walk you through every job. Skill ratings show you what's easy versus what takes experience, and special tool icons tell you exactly what you'll need. Trusted by boat owners and marine schools for over 50 years.