Carburetor Rebuild Kit – Fits Yamaha 25-30HP 2-Stroke (Replaces 689-W0093-00-00, 689-W0093-01-00, 689-W0093-02-00)

Product Details

This Carburetor Rebuild Kit – Fits Yamaha 25-30HP 2-Stroke Outboards is designed for comprehensive carburetor servicing on a range of Yamaha and Mercury/Mariner engines. It is compatible with Yamaha 25-30 HP 2-Stroke models from 1984–1997, including C25, C30, CV25, and CV30 series, as well as various 25-30 HP 2-Stroke Mercury/Mariner models based on specific serial number ranges.

This kit provides a direct interchange for Yamaha part numbers 689-W0093-00-00, 689-W0093-01-00, and 689-W0093-02-00; Mercury/Mariner 84456M; and Sierra 18-7770.

• Installs as a direct replacement for original carburetor components.
• Includes all necessary gaskets, a float, and a needle valve for a complete overhaul.
• Restores fuel delivery and engine performance.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Yamaha models, this kit fits various 25 HP and 30 HP 2-stroke outboards manufactured between 1984 and 1997.

For Mercury/Mariner models, compatibility is determined by the engine's serial number. Please verify your serial number falls within the specified ranges.

Technical Specs

Product Type

Carburetor Rebuild Kit

Installation

Direct replacement

Fuel Type

Gasoline

Fitting Type

Engine specific

Thread Size

Various (per component)

Warranty

1 Year (based on aftermarket offering)

Other Technical Attributes

Contains gaskets, float, needle valve, and other carburetor components

What’s in the Box

• 1 x Float (648-14385-00, 80591M, Sierra 18-7066)
• 1 x Carburetor Mounting Gasket (648-14198-00, 648-14198-A0, 27-80572M, Sierra 18-0775)
• 1 x Float Chamber Gasket (648-14384-01)
• 1 x Needle Valve Assembly (61K-14390-00)
• 1 x Washer & Spring (92990-04100-00)
• 2 x O-Rings (646-14397-00)
• 1 x Pan Head Screw (98517-04012-00)
• 1 x Air Adjusting Screw (647-14323-00)
• 2 x Bushings (90386-05002-00)

Installation Notes

1. Disconnect the battery and fuel lines to ensure safety.
2. Carefully remove the carburetor from the engine, taking note of all linkage and hose connections.
3. Disassemble the carburetor on a clean workbench, organizing all parts.
4. Clean all metal components with a dedicated carburetor cleaner, ensuring all jets and passages are clear.
5. Replace old gaskets, seals, the needle valve, and the float with the new parts from the kit.
6. Reassemble the carburetor, ensuring the float height is set to the manufacturer's specification.
7. Mount the newly rebuilt carburetor back onto the engine, reconnecting all linkages and fuel lines.
8. Adjust the idle speed and mixture screws as needed once the engine is running.

Troubleshooting & FAQ

Safety & Important Info

• Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.