Your complete guide to maintaining and repairing Mercury outboard engines from 2012–2020. This Seloc repair manual covers all four-stroke models from 2.5 to 350 HP, including single to 8-cylinder engines and jet drives. Learn how to handle routine maintenance like oil changes and tune-ups, to keep your engine running smoothly. Dive into detailed system breakdowns, plus step-by-step powerhead overhaul instructions. Perfect for DIY boaters who want to save money on service and understand their engine inside and out. Built on real engine teardowns, this is the same manual used by marine schools and professionals for 50 years.