812777-1 Mercury Flywheel Cover | Genuine Used Part

🔧 Product Description

Genuine Mercury / Mariner Outboard Flywheel and Stator Cover - Part Number: 812777-1

A genuine used protective flywheel cover for selected Mercury and Mariner two-stroke outboards.

Part number 812777-1 is an earlier hyphenated version of the current 812777T1 service reference. The cover fits above the flywheel and stator, helping prevent accidental contact with rotating components while protecting the ignition and charging system from loose objects.

⚙️ Key Features

• Genuine Mercury / Mariner flywheel cover

• Earlier reference 812777-1

• Current service reference 812777T1

• Protects the flywheel, stator and starter area

• Broad 30HP-125HP two-stroke application coverage

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 812777T1 → Supersedes 812777T

• 812777T → Supersedes 812777A1 and 812777-1

• 812777-1 earlier Mercury cover reference

OEM / Related Numbers:

• 812777-1

• 812777T1

• 812777T

• 812777A1

• 812777 A1

• Mercury assembly reference: 812777

• Matching cover screws from the applicable flywheel and starter-motor assembly

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• Mercury and Mariner two-stroke outboards

• Three-cylinder and four-cylinder flywheel assemblies

• Electric-start engines requiring a protective stator cover

Typically suits:

• Engine models:

• Mercury / Mariner 30HP two-stroke applications

• Mercury / Mariner 40HP two-stroke applications

• Mercury / Mariner 45 Jet

• Mercury / Mariner 50HP three-cylinder

• Mercury / Mariner 55HP

• Mercury / Mariner 60HP three-cylinder

• Mercury / Mariner 65 Jet

• Mercury / Mariner 75HP three-cylinder

• Mercury / Mariner 90HP three-cylinder

• Mercury / Mariner 100HP four-cylinder

• Mercury / Mariner 115HP four-cylinder

• Mercury / Mariner 125HP four-cylinder

• Engines whose flywheel and starter diagram specifies 812777-1, 812777T, 812777A1 or 812777T1

• HP Range: 30HP - 125HP

• Engine Type: Mercury / Mariner carburetted or oil-injected two-stroke outboard

• Year Range: Approximately 1994 - 2006, dependent on model and serial number

🔌 Function

The cover creates a protective barrier above the rotating flywheel and stator while still allowing removal for ignition, charging and starter-system servicing.

Common signs of failure:

• Cover is cracked or broken

• Screw holes are enlarged or damaged

• Cover vibrates or rattles at certain rpm

• Cover contacts the flywheel

• Ignition wiring is no longer properly shielded

• Cover is missing after previous repair work

• Heat or impact damage is visible

📦 Condition

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated