Carburetor Rebuild Kit – Fits Yamaha 40-50 HP (Replaces 6H4-W0093-03-00, 6H4-W0093-04-00)
Carburetor Rebuild Kit – Fits Yamaha 40-50 HP (Replaces 6H4-W0093-03-00, 6H4-W0093-04-00) is backordered and will ship as soon as it is back in stock.
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Carburetor Rebuild Kit – Fits Yamaha 40-50 HP (Replaces 6H4-W0093-0...
Carburetor Rebuild Kit – Fits Yamaha 40-50 HP (Replaces 6H4-W0093-03-00, 6H4-W0093-04-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Carburetor Rebuild Kit – Fits Yamaha 40-50 HP (Replaces 6H4-W0093-03-00, 6H4-W0093-04-00) provides all the necessary components to restore one set of three carburetors on Yamaha 2-stroke 40-50 HP outboard engines from 1989–2009. It covers P40, P50, C40, C50, and PRO50 models.
It serves as a direct replacement for Yamaha part number 6H4-W0093-04-00 (which supersedes 6H4-W0093-03-00), Sierra 18-7768, and Aftermarket AM6H4-W0093-02.
- Restores all three carburetors on three-cylinder engines.
- Engineered for direct-fit installation, no modifications required.
- Includes floats, needle valves, gaskets, and O-rings for a complete overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 6H4-W0093-03-00 | 6H4-W0093-04-00 |
| Yamaha | 6H4-W0093-04-00 | |
| Sierra | 18-7768 | |
| Aftermarket | AM6H4-W0093-02 | |
| Tohatsu | 3F3-87122-1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 40HP 2-Stroke | 40 | 2-Stroke | 1989–2009 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | 50HP 2-Stroke | 50 | 2-Stroke | 1989–2006 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | P40 | 40 | 2-Stroke | 1989–2009 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | C40 | 40 | 2-Stroke | 1989–2009 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | P50 | 50 | 2-Stroke | 1989–2006 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | C50 | 50 | 2-Stroke | 1989–2006 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | PRO50 | 50 | 2-Stroke | 1989–2006 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | 40V/VM/VE | 40 | 4-Stroke | 1995–2014 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | 40YET | 40 | 4-Stroke | 2005–2007 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | C40T/TL | 40 | 4-Stroke | 1995–2002 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
| Yamaha | 50H/HR/HM/HW/HE | 50 | 4-Stroke | 1995–2003 | 6H4-W0093-04-00 | Supersedes 6H4-W0093-03-00 |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Fitment Type
- Three-cylinder carburetors
- Compatible With
- Yamaha 40HP, 50HP 2-stroke outboard engines
- OEM Part Number
- 6H4-W0093-04-00 (superseded from 6H4-W0093-03-00)
- Installation
- Direct replacement
- Manufacturer
- Aftermarket equivalent
What’s in the Box
This kit includes the following components to rebuild all 3 (THREE) carburetors:
- 1 x Gasket (6H4-14198-09-00)
- 3 x Cap (679-14966-00-00)
- 3 x Needle Valve Assembly (6H3-14590-01-00)
- 3 x Clip (633-14159-00-00)
- 3 x Pin, Float (676-14186-00-00)
- 3 x Float (6G1-14985-00-00)
- 3 x Pin, Float Arm (688-14548-00-00)
- 3 x O-Ring (6G1-14984-00-00)
- 3 x Screw, With Washer (97980-04114-00)
- 3 x O-Ring (93210-04230-00)
- 3 x Gasket (663-14126-00-00)
- 3 x Gasket (688-14126-00-00)
- 3 x Screw, Pilot (692-14923-00-00)
- 3 x O-Ring (93210-15M52-00)
Installation Notes
- Disconnect the battery and shut off the fuel supply. Place a rag under the carburetors to catch any spilled fuel.
- Carefully disconnect fuel lines, throttle linkages, and any other connections. Label them to ensure correct reassembly.
- Remove the mounting bolts and detach the carburetor bank from the engine intake.
- Disassemble one carburetor at a time to avoid mixing parts. Lay out components on a clean surface in the order of removal.
- Clean all metal parts with a dedicated carburetor cleaner. Never use wire to clean jets or passages, as this can damage them.
- Replace old gaskets, seals, O-rings, the needle valve, and the float with the new components from the kit.
- Reassemble the carburetor, ensuring the float height is set to your engine's specifications (refer to a service manual).
- Repeat the process for the remaining carburetors, then reinstall the assembly onto the engine. Reconnect all linkages and fuel lines.
Troubleshooting & FAQ
How do I know if this kit will fit my engine?
This kit is designed for Yamaha 3-cylinder 40HP and 50HP models listed in the Engine & Model Compatibility table. Always cross-reference your engine's model and year with the table and verify your carburetor looks identical to product images before purchasing.
Is this one kit for all three carburetors?
Yes. This is a complete kit containing all the necessary parts, including floats, needles, and gaskets, to rebuild a full bank of three carburetors on your Yamaha engine.
What are common signs that my carburetors need a rebuild?
Symptoms include hard starting, rough idling, stalling, poor acceleration, fuel leaks, or black smoke from the exhaust. These issues are often caused by degraded gaskets, clogged jets, or an incorrect float level, which this kit is designed to fix.
Why does the fitment list include some 4-stroke models?
While this kit is primarily for 2-stroke engines, some Yamaha 4-stroke models from the specified years used carburetors that shared the same internal components. Please verify that your carburetor's part number or appearance matches the references provided.
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.
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