The 90-828631R2 Mercury Mariner 40-50HP Bigfoot Service Manual (1997 edition) is the official factory guide for maintaining and repairing 4-stroke outboards, including 40HP, 45HP, and 50HP Bigfoot models. It covers U.S. engines starting from serial number 0G231123 and newer.
Inside, you’ll find step-by-step instructions, wiring diagrams, exploded views, and torque specifications. The manual walks you through essential procedures for the powerhead, ignition system, fuel components, and gearcase, helping you handle both routine service and advanced repairs.
Mercury Marine designed this manual to simplify troubleshooting with precise, factory-tested repair methods. Whether you’re adjusting timing, inspecting a gearcase, or rebuilding the carburetor, you’ll have detailed specifications and illustrations to complete the job correctly.
This service manual is indispensable for professional mechanics and DIY boat owners who want their Mercury/Mariner Bigfoot outboards to perform at their best. It ensures reliability on the water by giving you direct access to accurate, factory-approved repair information.
Arizona Outboard Dismantlers provides genuine manuals like this one, helping you maintain your Mercury engine with confidence and factory accuracy.
Additional information
Weight | 1500 g |
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