Carburetor Repair Seal Kit for Evinrude/Johnson 6–20 HP Outboards — Replaces 777722, 439073, 431897
Carburetor Repair Seal Kit for Evinrude/Johnson 6–20 HP Outboards — Replaces 777722, 439073, 431897 is backordered and will ship as soon as it is back in stock.
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Carburetor Repair Seal Kit for Evinrude/Johnson 6–20 HP Outboards —...
Carburetor Repair Seal Kit for Evinrude/Johnson 6–20 HP Outboards — Replaces 777722, 439073, 431897 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Carburetor Repair Seal Kit is designed for selected Evinrude and Johnson BRP/OMC outboard carburetors. It helps renew sealing surfaces during carburetor service and is intended for gasoline marine fuel systems.
The company fitment data covers Evinrude and Johnson outboards in the following applications: 6 HP and 8 HP models from 1986 onward, 9.9 HP and 15 HP models from 1989 onward, and 20 HP models from 1991 through 1997. Always compare the exact engine model and the existing carburetor before ordering.
- Carburetor repair seal kit for selected Evinrude/Johnson outboards.
- Supplied as a seal kit; the package contents are limited to the seals and gaskets applicable to the covered carburetor applications.
- Common replacement and reference numbers include 777722, 439073, and 431897.
- Cross-reference listings also include additional Evinrude/Johnson, Sierra, Mallory, and GLM numbers shown below.
Part Number Matrix
These numbers are provided as manufacturer or aftermarket reference numbers. Verify the complete engine and carburetor application before purchase.
| Brand | Reference Number |
|---|---|
| Evinrude / Johnson / OMC / BRP | 777722 |
| Evinrude / Johnson / OMC / BRP | 439073 |
| Evinrude / Johnson / OMC / BRP | 431897 |
| Evinrude / Johnson / OMC / BRP | 436359 |
| Evinrude / Johnson / OMC / BRP | 438397 |
| Evinrude / Johnson / OMC / BRP | 398508 |
| Evinrude / Johnson / OMC / BRP | 398230 |
| Sierra Marine | 18-7219 |
| Mallory Marine | 9-37109 |
| GLM | 40600 |
Engine & Model Compatibility
Fitment is based on the engine family, horsepower, and year ranges below. Model-code variations may exist within each range, so confirm the complete model designation and carburetor configuration before installation.
| Brand | Engine family | Rated HP | Stroke | Year range | Application |
|---|---|---|---|---|---|
| Evinrude / Johnson | Selected outboard models | 6 HP | Not specified in company data | 1986 and later | Carburetor repair seal kit |
| Evinrude / Johnson | Selected outboard models | 8 HP | Not specified in company data | 1986 and later | Carburetor repair seal kit |
| Evinrude / Johnson | Selected outboard models | 9.9 HP | Not specified in company data | 1989 and later | Carburetor repair seal kit |
| Evinrude / Johnson | Selected outboard models | 15 HP | Not specified in company data | 1989 and later | Carburetor repair seal kit |
| Evinrude / Johnson | Selected outboard models | 20 HP | Not specified in company data | 1991–1997 | Carburetor repair seal kit |
Important: The company data does not specify individual model codes, shaft length, serial-number ranges, or stroke for this product. Do not rely on horsepower alone; compare the carburetor, gasket layout, and original reference number before ordering.
Technical Specs
- Product Type
- Carburetor Repair Seal Kit
- Application
- Selected Evinrude and Johnson outboard carburetors
- Engine Range
- 6 HP, 8 HP, 9.9 HP, 15 HP, and 20 HP applications within the listed year ranges
- Fuel System
- Gasoline marine fuel systems
- Construction
- Seal and gasket components; specific material is not stated in the company data
- Product Status
- Aftermarket replacement seal kit
What’s in the Box
- Carburetor repair seals and gaskets for the covered applications
The company record does not specify an exact component count or identify a needle-and-seat assembly, float bowl gasket, float, key, or other hard parts. Package contents may vary by the carburetor application; use only the components that match your original assembly.
Installation Notes
- Shut off the fuel supply and allow the engine to cool completely before servicing.
- Remove the engine cover and gain access to the carburetor according to the engine service procedure.
- Photograph or mark fuel-line and linkage routing before disconnecting them.
- Remove the carburetor and disassemble it on a clean, organized work surface.
- Clean reusable metal components and all gasket surfaces with a suitable carburetor cleaner. Keep solvent away from components that may be damaged by it.
- Compare each replacement seal and gasket with the removed part before installation.
- Install the matching seals and gaskets in their original locations. Do not force a component or use a part that does not match the carburetor.
- Reassemble the carburetor using the engine manufacturer’s service specifications, then reconnect the fuel lines and linkages.
- Check for fuel leaks before starting the engine.
- Start and test the engine in a safe, properly ventilated location, and verify stable operation before returning the engine to service.
Troubleshooting & FAQ
How do I verify fitment?
Confirm the Evinrude or Johnson brand, horsepower, model year, complete model designation, and carburetor reference number. The listed horsepower and year range are not sufficient by themselves because carburetor configurations can vary.
What symptoms may indicate worn carburetor seals?
Possible symptoms include fuel leakage, hard starting, unstable idle, poor acceleration, or an inconsistent fuel mixture. These symptoms can also be caused by blocked passages, incorrect adjustment, damaged hard parts, or ignition problems.
Does this kit include a needle and seat?
No needle-and-seat assembly is confirmed in the company package data. This product is identified as a carburetor repair seal kit, so do not assume that hard parts are included.
Will every seal in the package be used?
Not necessarily. A seal kit may cover related carburetor applications, so use only the components that match your specific carburetor and retain unused components for identification until the installation is complete.
Is this a genuine OEM part?
This is an aftermarket replacement seal kit. The listed manufacturer and reference numbers are provided for application and cross-reference purposes and do not mean that the product is a genuine Evinrude, Johnson, OMC, BRP, Sierra, Mallory, or GLM part.
Do I need special tools?
Basic mechanic’s hand tools and suitable carburetor-cleaning supplies are generally required. Follow the service procedure for your exact engine and use the manufacturer’s specifications for reassembly and adjustment.
What warranty is included?
A product-specific warranty term is not stated in the available company data. Refer to the seller’s current warranty and return policy before purchase.
Safety & Important Information
- Work in a well-ventilated area away from flames, sparks, and other ignition sources.
- Use appropriate eye protection and fuel-resistant gloves when handling gasoline and cleaning solvents.
- Verify the parts against the original carburetor before installation. Do not use a seal or gasket that does not match.
- Professional installation is recommended when the correct carburetor specifications or adjustment procedures are uncertain.
About Sea Sierra
- Marine Parts Focus — Replacement components for marine engines and fuel systems.
- Application-Based Listings — Product information is organized around engine families, reference numbers, and fitment ranges.
- Support Before Installation — Confirm the exact engine and carburetor application before ordering or disassembling the engine.
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