C-90-92235 Service Manual – Mercury 18-25HP Outboards

This Mercury 18/25HP Service Manual (part number C-90-92235) is the factory guide for early-1980s 18HP and 25HP outboards. Written by Mercury engineers, it provides authentic service instructions, illustrated repair procedures and detailed part diagrams.

It covers every core system including powerhead, ignition, fuel, mid-section and gearbox. Clear torque tables, photos and step-by-step service notes make troubleshooting and repair efficient for mechanics and owners.

This genuine manual ensures you maintain or rebuild your classic Mercury engines to factory standards. Arizona Outboard Dismantlers supplies only original manuals like this Mercury 18/25HP Service Manual to help preserve, repair, and tune vintage outboards with confidence.