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

Carburetor Rebuild Kit – Fits Yamaha 25-30HP 2-Stroke Outboards

This carburetor rebuild kit is designed for a wide range of Yamaha 25 HP and 30 HP 2-Stroke outboards manufactured between 1984 and 1997, including C25, C30, CV25, and CV30 models. It also fits various 2-stroke Mercury/Mariner 25 HP and 30 HP engines, depending on the serial number.

It serves as a direct replacement for Yamaha OEM part numbers 689-W0093-00-00, 689-W0093-01-00, and 689-W0093-02-00, as well as Mercury/Mariner 84456M and Sierra 18-7770.

• Complete Kit: Contains all necessary gaskets, o-rings, float, and needle valve for a full carburetor overhaul.
• Direct Replacement: Engineered to meet or exceed OEM specifications for a direct, hassle-free installation.
• Broad Compatibility: Covers dozens of specific Yamaha and Mercury/Mariner engine models.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Yamaha Models

Mercury/Mariner Models

Technical Specifications

Package Contents

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

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area and have a fire extinguisher nearby.
2. Remove the Cowling: Take off the engine cover to access the carburetor.
3. Disconnect Lines: Carefully disconnect the fuel line from the carburetor. Note the location of any other hoses or linkages connected to it.
4. Remove Carburetor: Unscrew the mounting bolts holding the carburetor to the engine block and carefully remove it.
5. Disassemble Carburetor: Place the carburetor on a clean workbench. Carefully disassemble it, paying close attention to the order and orientation of each component. Taking pictures can help with reassembly.
6. Clean Components: Thoroughly clean all metal parts with a quality carburetor cleaner. Do not use cleaner on non-metal parts like gaskets and O-rings.
7. Install New Parts: Carefully install the new components from the rebuild kit, including gaskets, seals, the needle valve, and float. Ensure the float height is set to your engine's specification.
8. Reassemble and Mount: Reassemble the carburetor and mount it back onto the engine block, ensuring a secure fit.
9. Reconnect and Test: Reconnect the fuel line and any other linkages. Prime the fuel system and check for leaks before starting the engine.
10. Adjust Idle: Once the engine is running, you may need to adjust the air and idle screws to achieve a smooth idle.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine?
A: The best way is to match your engine's model and year to our compatibility tables. For Yamaha and Mercury/Mariner models, it is critical to also check your engine's serial number range. Cross-referencing the OEM part number (e.g., 689-W0093-02-00 for Yamaha) from your engine's service manual or parts diagram is the most reliable method.

Q: What are the signs that my carburetor needs to be rebuilt?
A: Common symptoms include difficulty starting, rough idling, stalling at low speeds, engine hesitation upon acceleration, or black smoke from the exhaust. Visible fuel leaks around the carburetor body are also a clear indicator.

Q: Is it necessary to replace all parts included in the kit?
A: Yes, for a complete and reliable rebuild, it is highly recommended to replace all included gaskets, seals, and the needle valve. These components degrade over time due to fuel exposure and age, and failing to replace them can lead to persistent performance issues or fuel leaks.

Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.