66T-W0093-00-00 Carburetor Repair Kit for Yamaha E40X 40XMH 40XW E40MLH E40XMH | JLM Marine

Carburetor Repair Kit – Fits Yamaha 2-Stroke 40 HP E40X, 40XMH, 40XW, E40MLH, E40XMH (2000-2013)

This comprehensive carburetor repair kit is engineered for Yamaha 2-stroke 40 HP outboard engines, including the E40X, 40XMH, 40XW, E40MLH, and E40XMH models manufactured between 2000 and 2013. Designed to restore optimal carburetor performance, this kit provides all essential seals, gaskets, and components needed for a complete rebuild.

This aftermarket kit directly replaces Yamaha OEM part number 66T-W0093-00-00 and supersedes part number 66T-W0093-00. It is specifically designed to repair Yamaha carburetors with part numbers 66T-14301-02, 66T-14301-12, 66T-14301-22, 66T-14301-40, and 66T-14301-50.

• Complete rebuild kit with 15 precision-engineered components including O-rings, gaskets, float assembly, and mixture screw
• Compatible with Yamaha 2-stroke 40 HP X-series models from 2000-2013
• Direct replacement for OEM part 66T-W0093-00-00, ensuring proper fit and function

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.

Technical Specifications

Package Contents

This complete carburetor repair kit includes 15 precision components:

• 1 x 93210-46M16 O-Ring
• 1 x 93210-54M54 O-Ring
• 1 x 66T-14384-01 Float Chamber Gasket
• 1 x 66T-14536-00 Gasket
• 1 x 6E5-14323-03 Mixture Screw
• 1 x 6E5-14546-00 Needle Valve
• 1 x 6E5-14385-02 Float
• 1 x 6E5-14386-02 Float Pin
• 1 x 66T-14984-00 Float Chamber Gasket
• 1 x 66T-14992-00 Plug
• 2 x 66T-14959-00 Gasket
• 4 x 97980-05125 Screw

Note: This kit is designed for Yamaha 2-stroke 40 HP X models including 40X and E40X.

Installation Guide

1. Preparation: Disconnect the fuel line and remove the carburetor from the engine. Clean the exterior thoroughly before disassembly.
2. Disassemble Carburetor: Remove the float chamber by unscrewing the retaining screws. Carefully note the position of all components for reassembly.
3. Remove Old Components: Take out the float assembly, needle valve, and float pin. Remove all old gaskets and O-rings from sealing surfaces.
4. Clean Thoroughly: Use carburetor cleaner to clean all passages, jets, and surfaces. Ensure all fuel residue and debris are removed completely.
5. Install New O-Rings: Replace the old O-rings (93210-46M16 and 93210-54M54) with the new ones from the kit. Lightly lubricate with clean fuel before installation.
6. Install Float Assembly: Insert the new float pin (6E5-14386-02), attach the new float (6E5-14385-02), and install the new needle valve (6E5-14546-00).
7. Replace Mixture Screw: Install the new mixture screw (6E5-14323-03). Turn it in gently until seated, then back out 1.5 turns as a starting point for adjustment.
8. Install Gaskets: Replace all gaskets including the float chamber gaskets (66T-14384-01, 66T-14984-00), main gasket (66T-14536-00), and small gaskets (66T-14959-00).
9. Install Plug: Insert the new plug (66T-14992-00) in its designated position ensuring proper seating.
10. Reassemble Float Chamber: Carefully reattach the float chamber using the new screws (97980-05125). Tighten in a cross pattern to ensure even sealing.
11. Reinstall Carburetor: Mount the carburetor back onto the engine, reconnect the fuel line, and ensure all connections are secure.
12. Test and Adjust: Start the engine and allow it to warm up. Adjust the mixture screw as needed for smooth idle and optimal performance.

Troubleshooting & FAQ

Q: How do I confirm this carburetor repair kit fits my Yamaha outboard?
A: Verify that your engine is a Yamaha 2-stroke 40 HP model (40XMH, 40XW, E40X, E40MLH, or E40XMH) manufactured between 2000 and 2013. Check your existing carburetor part number against the compatible list: 66T-14301-02, 66T-14301-12, 66T-14301-22, 66T-14301-40, or 66T-14301-50. You can also cross-reference the OEM part number 66T-W0093-00-00 with your service manual.

Q: What are the signs that my carburetor needs rebuilding?
A: Common symptoms include rough or inconsistent idling, difficulty starting, poor fuel economy, fuel leaking from the carburetor, and reduced engine performance at various throttle positions. If your engine has been sitting for extended periods or runs poorly after storage, a carburetor rebuild is often necessary.

Q: How often should I rebuild my carburetor?
A: Rebuild intervals depend on usage and fuel quality. For engines in regular use with fresh fuel and proper storage, carburetor rebuilding is typically needed every 3-5 years. If your engine sits unused for long periods or you use ethanol-blended fuels, more frequent rebuilding may be necessary.

Q: Can I reuse any of the old gaskets or O-rings during installation?
A: No, all gaskets and O-rings should be replaced during a carburetor rebuild. Reusing old sealing components can lead to fuel leaks, air leaks, and poor performance. This kit includes all necessary seals and gaskets for a complete rebuild.

Q: What is the difference between this aftermarket kit and the OEM Yamaha kit?
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.