Carburetor Repair Seal Kit for Yamaha 20/25HP and Tohatsu/Nissan 40/50HP Outboards

Product Details

This aftermarket carburetor repair seal kit is intended for selected Yamaha 20HP and 25HP two-cylinder, 2-stroke outboards and selected Tohatsu/Nissan Marine 40HP and 50HP outboards. It is designed to renew the carburetor sealing components and help restore a reliable seal during carburetor service.

Verify the engine brand, horsepower, model, year, and the original part number before ordering. Carburetor configurations can vary within the same horsepower range.

• Aftermarket carburetor repair seal kit.
• For selected 2-stroke outboard applications listed below.
• Use during carburetor disassembly and resealing service.
• Does not include a complete carburetor assembly.

Part Number References

The following manufacturer and aftermarket references are associated with this seal-kit application. Number references are provided for identification and cross-reference purposes; confirm the application before purchase.

Engine and Model Compatibility

Compatibility is separated by engine family because the listed Yamaha and Tohatsu/Nissan applications use different reference-number groups. Confirm the exact model and original carburetor part number before installation.

Yamaha Outboards

Tohatsu/Nissan Marine Outboards

Technical Specifications

Product type

Carburetor repair seal kit

Part type

Aftermarket replacement sealing components

Application

Selected Yamaha, Tohatsu, and Nissan Marine 2-stroke outboards

Installation

Carburetor service and resealing; professional installation is recommended

Fuel system

Carburetor-equipped gasoline outboard engines

What's in the Box

One aftermarket carburetor repair seal kit is supplied. The company product information identifies the product as a seal kit but does not provide a complete itemized component list or quantities. Do not assume that floats, needle valves, screws, or other hardware are included unless they are shown in the product images or confirmed before ordering.

Installation Notes

1. Confirm the engine model, horsepower, year, stroke, cylinder configuration, and reference number before beginning work.
2. Disconnect the battery where applicable and shut off the fuel supply.
3. Remove the airbox or silencer components as required to access the carburetor.
4. Label fuel lines, throttle linkages, and choke linkages before disconnecting them.
5. Remove the carburetor and place it on a clean work surface.
6. Disassemble the carburetor carefully and retain reusable components in an organized manner.
7. Clean the mating surfaces and carburetor passages with a suitable carburetor cleaner.
8. Remove the old seals and install the replacement sealing components in the corresponding locations.
9. Reassemble the carburetor using the engine manufacturer's service procedure and torque specifications.
10. Reconnect the carburetor, fuel lines, and linkages, then check for fuel leaks before starting the engine.
11. After installation, verify idle operation and adjust the carburetor only according to the applicable service manual.

Troubleshooting and FAQ

Safety and Important Information

• Work in a well-ventilated area away from ignition sources when handling gasoline and carburetor cleaner.
• Follow the engine manufacturer's service procedures and safety instructions.
• Verify the original part and application before purchase; horsepower alone is not sufficient to confirm fitment.
• Inspect all removed components and replace any worn parts not included in this seal kit.
• Professional installation is recommended for safe and reliable operation.

About Sea Sierra

• Marine Parts Selection — Replacement components for a range of outboard service applications.
• Application-Focused Listings — Product references and compatibility details are provided to support part identification.
• Aftermarket Value — Practical replacement options for routine marine maintenance and repair.