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FLASHSALE26

Carburetor Repair Seal Kit for Yamaha 25/30 HP and Mariner 25/28/30 HP Outboards

Regular price $26.95

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Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


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If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Carburetor Repair Seal Kit is intended for servicing specified Yamaha outboard carburetors and Mariner carburetors. It is a seal kit for carburetor repair and is not a complete carburetor assembly.

The kit is listed for Yamaha 25 HP models from 1984–1987, Yamaha C25 models from 1990–1997, Yamaha 30 HP models from 1984–1986, Yamaha C30 models from 1990–1992, and selected Mariner 25 HP A/C, 28 HP, and 30 HP applications. Confirm the exact model and year before ordering.

  • Designed for carburetor repair and resealing.
  • Aftermarket replacement for the specified application references.
  • Use the model, horsepower, and year information below to verify compatibility.

Part Number References

These manufacturer and aftermarket references are supplied for identification and cross-reference purposes. A part-number match should be confirmed against the engine model and year.

Brand Reference Application
Yamaha 689-W0093-01 Carburetor repair seal kit reference
Yamaha 689-W0093-02 Carburetor repair seal kit reference
Sierra 18-7770 Aftermarket carburetor kit reference
Mariner 84456M Mariner carburetor repair reference

Engine Compatibility

Compatibility is based on the company catalog application range. Model suffixes, production details, and carburetor configurations can vary, so compare your engine identification information and the existing carburetor components before installation.

Brand Engine family Rated HP Years Reference
Yamaha Outboard 25 HP models 25 1984–1987 689-W0093-01; 689-W0093-02
Yamaha Outboard C25 models 25 1990–1997 689-W0093-01; 689-W0093-02
Yamaha Outboard 30 HP models 30 1984–1986 689-W0093-01; 689-W0093-02
Yamaha Outboard C30 models 30 1990–1992 689-W0093-01; 689-W0093-02
Brand Engine family Rated HP Reference Fitment note
Mariner 25 HP A/C 25 84456M Verify the complete model identification.
Mariner 28 HP 28 84456M Verify the complete model identification.
Mariner 30 HP 30 84456M Verify the complete model identification.

Technical Specifications

Product Type
Carburetor repair seal kit
Part Category
Fuel system and carburetor service
Construction
Replacement seals and carburetor service components
Application
Selected Yamaha and Mariner outboard carburetors
Replacement Type
Aftermarket replacement

What's in the Box

One carburetor repair seal kit containing the seals and related service components specified for the applicable carburetor.

Individual seal types and quantities are application-specific and are not separately itemized in the company catalog. Compare the kit contents with the original carburetor before installation.

Installation Notes

  1. Confirm the engine brand, model family, horsepower, and year before beginning work.
  2. Disconnect the fuel supply and follow the engine manufacturer's safety procedures.
  3. Remove and disassemble the carburetor on a clean work surface.
  4. Clean the mating surfaces and passages, and remove all remnants of the old seals.
  5. Install the replacement seals in the correct locations without damaging or twisting them.
  6. Reassemble the carburetor using the manufacturer's service specifications for tightening and adjustment.
  7. Check for fuel leaks and verify proper operation after installation.

Troubleshooting & FAQ

How do I confirm that this seal kit fits my engine?

Match your engine brand, model family, horsepower, and year with the compatibility tables. Also compare the reference number and the shape of the original seals. When details differ, consult the engine or carburetor service information before ordering.

Is this a complete carburetor?

No. This product is a carburetor repair seal kit. It is intended to replace the applicable seals and related service components, not the carburetor body or a complete carburetor assembly.

Does the kit include a float or needle valve?

The company catalog identifies this product as a carburetor repair seal kit and does not specify a float or needle valve as included. Do not assume those components are included.

What are common reasons to service a carburetor?

Worn or damaged seals can contribute to fuel leakage or poor sealing during carburetor operation. Cleaning, adjustment, and inspection of the other carburetor components may also be required.

Can I use this kit on another Yamaha or Mariner engine?

Only if the engine model and year fall within the listed application range and the carburetor reference and seal configuration match. Similar horsepower alone does not confirm fitment.

Safety & Important Information

  • Fuel-system work should be performed with the engine stopped, cool, and away from ignition sources.
  • Verify the engine model, year, horsepower, and existing part references before installation.
  • This is an aftermarket replacement product and is not an original manufacturer component.
  • Professional installation is recommended if you are unfamiliar with carburetor service.

About Sea Sierra

Sea Sierra supplies aftermarket marine replacement parts for maintenance and repair applications. Product fitment should always be confirmed using the engine identification information and the application details provided on the product page.

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