Carburetor Repair Kit – Fits Yamaha 40-50HP Outboards (Replaces 6H4-W0093-03-00)
Carburetor Repair Kit – Fits Yamaha 40-50HP Outboards (Replaces 6H4-W0093-03-00) is backordered and will ship as soon as it is back in stock.
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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 40-50HP Outboards (Replaces 6H4-W0093-03-00) is designed for Yamaha 40-50HP 3-cylinder 2-stroke outboards from 1988–2014. It provides the necessary components to rebuild a single carburetor and restore engine performance.
It serves as a direct replacement for Yamaha 6H4-W0093-03-00 and 6H4-W0093-02-00; Mercruiser 8M0175366; Tohatsu 3F3-87122-1; and Sierra 18-7768.
- One kit is required per carburetor for a complete overhaul.
- Includes essential components like the float, inlet needle, and seat.
- Built to meet or exceed original equipment specifications for reliable service.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | 6H4-W0093-02-00 | Superseded by 6H4-W0093-03-00 |
| Mercruiser | 8M0175366 | |
| Tohatsu | 3F3-87122-1 | |
| Sierra | 18-7768 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This kit is verified for the following Yamaha outboard models. Ensure your model and year range match before ordering.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 40HP | 40 | 2-Stroke | 1989–2004 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | C40 | 40 | 2-Stroke | 1997–2002 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | P40 | 40 | 2-Stroke | 1998 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | 50HP | 50 | 2-Stroke | 1989–2004 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | C50 | 50 | 2-Stroke | 1998–2001 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
| Yamaha | P50 | 50 | 2-Stroke | 1991–1996 | 6H4-W0093-03-00 | Supersedes 6H4-W0093-02-00 |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Installation
- One kit required per carburetor
- Fuel Type
- Gasoline
- Dimensions
- 17.0" L x 13.0" W x 6.0" H
- Warranty
- 1 Year (UP Marine aftermarket version)
- Other Technical Attributes
- Includes float, inlet needle and seat
What’s in the Box
- Float Assembly
- Inlet Needle and Seat
- Gaskets and Seals
Installation Notes
- Disconnect the fuel line and battery. Ensure the engine is cool and work in a well-ventilated area.
- Carefully remove the carburetor(s) from the engine, noting all cable and hose connections.
- Disassemble the carburetor on a clean workbench, keeping track of all small parts.
- Remove the old float, needle, gaskets, and seals. Clean the carburetor body and jets with carburetor cleaner.
- Install the new components from the kit, ensuring the float height is set to manufacturer specifications.
- Reassemble the carburetor and reinstall it on the engine, reconnecting all linkages and fuel lines.
- Reconnect the battery, prime the fuel system, and test the engine for proper operation. Adjust idle as needed.
Troubleshooting & FAQ
How do I know if this kit fits my specific engine model?
The surest way is to match the OEM part number from your engine's service manual to the numbers listed in our Part Number Matrix. You can also check our Engine & Model Compatibility table for verified applications. If you see your model and year, the kit is compatible.
What are the signs of a failing carburetor that this kit can fix?
Common symptoms include rough idling, engine stalling, poor acceleration, fuel leaks, or difficulty starting. This kit replaces the most common wear items to resolve these issues.
How many kits do I need for my engine?
This kit services one carburetor. The Yamaha 3-cylinder engines this kit fits have three carburetors, so you would typically need to purchase three kits to service the entire engine.
Is a special tool required to set the float height?
While a specialty float gauge is recommended for precise measurement, you can often get close with a small ruler or caliper. Setting the correct float height is critical for preventing fuel starvation or flooding, so follow the service manual's specifications closely.
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
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