Carburetor Repair Kit – Fits Yamaha 40HP Two-Stroke Outboards (Replaces 66T-W0093-00, 66T-W0093-01)
Carburetor Repair Kit – Fits Yamaha 40HP Two-Stroke Outboards (Replaces 66T-W0093-00, 66T-W0093-01) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Product Details
This Carburetor Repair Kit – Fits Yamaha 40HP Two-Stroke Outboards (Replaces 66T-W0093-00, 66T-W0093-01) is designed to restore the performance of Yamaha 2-stroke 40HP outboard engines. It is compatible with models 40X, 40XMH, 40XW, E40X, E40MLH, and E40XMH manufactured between 1998 and 2013.
The kit serves as a direct replacement for Yamaha OEM part numbers 66T-W0093-00-00 and 66T-W0093-01-00, as well as Sierra 18-7750 and JLM Marine 66T-W0093 aftermarket equivalents.
- Provides all necessary gaskets, seals, and hardware for a complete carburetor overhaul.
- Engineered for direct OEM replacement fit and function.
- Components are produced in an ISO9002 certified factory to ensure quality and reliability.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 66T-W0093-00-00 |
| Yamaha | 66T-W0093-01-00 |
| Sierra | 18-7750 |
| JLM Marine | 66T-W0093 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 40X | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 | |
| Yamaha | 40XMH | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 | |
| Yamaha | 40XW | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 | |
| Yamaha | E40X | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 | |
| Yamaha | E40MLH | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 | |
| Yamaha | E40XMH | 40 | 2-Stroke | 1998–2013 | 66T-W0093-00-00 |
Technical Specs
- Product Type
- Carburetor Rebuild Kit
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline
- Dimensions
- 15.0" x 11.0" x 2.0"
- Weight
- 37g (1.3 oz)
- Warranty
- 1-year against manufacturing defects (aftermarket)
- Other Technical Attributes
- Produced in ISO9002 certified factory
What’s in the Box
- 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
Installation Notes
- Ensure the engine is cool. Disconnect the negative battery terminal and turn off the fuel supply.
- Carefully remove the engine cowling and air silencer box to access the carburetor.
- Label and disconnect all fuel lines, linkages, and electrical connections from the carburetor.
- Remove the mounting bolts and carefully detach the carburetor from the intake manifold.
- Disassemble the carburetor on a clean workbench, taking photos to remember the order of components.
- Clean all jets, passageways, and metal components with a quality carburetor cleaner. Do not use cleaner on rubber or plastic parts.
- Using the kit, replace all gaskets, O-rings, the needle valve, and float assembly. Ensure parts are seated correctly.
- Reassemble the carburetor, making sure the float height is set to your engine's service manual specifications.
- Reinstall the carburetor, reconnecting all lines and linkages. Do not overtighten bolts.
- Turn on the fuel supply, check for leaks, and reconnect the battery.
- Start the engine and perform idle mixture and speed adjustments as specified in the service manual.
Troubleshooting & FAQ
How do I confirm this kit fits my specific engine?
The best way is to match your engine's model and year to the "Engine & Model Compatibility" table. You can also verify the OEM part number stamped on your existing carburetor or listed in your owner's manual against our "Part Number Matrix."
What are common signs that a carburetor rebuild is needed?
Symptoms include hard starting, rough idling, stalling, poor acceleration, black smoke from the exhaust (running rich), or visible fuel leaks. These issues are often caused by degraded gaskets, clogged jets, or a stuck float or needle valve.
Is a service manual necessary for this installation?
While our kit is straightforward, we highly recommend using your engine's official service manual. It provides critical specifications for float height, jet sizes, and mixture screw settings that are essential for optimal performance and safety.
How often should a carburetor be rebuilt?
There is no fixed service interval. It depends on usage, fuel quality, and storage conditions. If your engine is used in saltwater or sits for long periods (especially with ethanol-blended fuel), expect to rebuild the carburetor every 2-4 years as a preventative measure.
Can I install just a few parts from the kit?
For a reliable and lasting repair, it is critical to use all the new gaskets, O-rings, and seals provided. Components wear out at similar rates, and reusing an old gasket can cause fuel or air leaks, defeating the purpose of the rebuild.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
