90-828631 Service Manual – Mercury/Mariner 50 HP (4-Stroke)

The 90‑828631 Service Manual is the official factory-issued guide for Mercury/Mariner 50 HP (4‑Stroke) outboard engines (U.S. serial numbers 0G231123 and up). Published by Brunswick Corporation in 1995, this comprehensive OEM manual delivers precise details across engine systems.

System Coverage & Models

Though centered on the 50 HP 4‑stroke model, this manual also includes servicing information for 45 HP variants, making it adaptable across similar mechanical platforms.

Technical Content & Features

The 90‑828631 Service Manual offers:

• Clear exploded diagrams and system schematics

• Step-by-step servicing for powerhead, fuel delivery, ignition, electrical systems, wiring, and diagnostic routines

• Specific torque values, maintenance intervals, and repair workflows
  These features ensure both clarity and completeness for professional mechanics and DIY users alike.

Condition & Format Options

This manual is available in two formats:

• Printed, original factory copy—used, but complete and fully functional.

• Digital PDF download, where available, providing bookmarked and searchable access for convenience.

Arizona Outboard Dismantlers supplies authentic marine manuals trusted by pros and DIY enthusiasts alike. The 90-828631 Service Manual delivers factory-level detail to confidently guide thorough, reliable engine servicing.