Carburetor Rebuild Kit – Fits Mercury Mariner, Yamaha, Tohatsu 3HP-8HP (Replaces 369-87122-1)
Carburetor Rebuild Kit – Fits Mercury Mariner, Yamaha, Tohatsu 3HP-8HP (Replaces 369-87122-1) 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
Carburetor Rebuild Kit – Fits Mercury Mariner, Yamaha, Tohatsu 3HP-...
Product Details
This Carburetor Rebuild Kit – Fits Mercury Mariner, Yamaha, Tohatsu 3HP-8HP contains all the standard parts needed to overhaul the carburetor on a wide range of 2-stroke outboard motors. It is designed for Mercury/Mariner 4–8 HP (1984–2006), Yamaha 3–8 HP (1984–2002), and select Tohatsu/Nissan 4–5 HP models that use a WMC-series or KB-series carburetor.
It serves as a direct replacement for Mercury part 11502M, Yamaha 6G1-W0093-00-00, Tohatsu 369-87122-1, and Sierra 18-7765, ensuring broad interchange compatibility.
- Installs as a direct OEM-spec replacement for a perfect fit.
- Includes essential components like the float, needle valve, gaskets, and seals.
- All parts are produced in an ISO 9002 certified factory for quality assurance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mariner | 11502M |
| Yamaha | 6G1-W0093-00 / 6G1-W0093-01-00 |
| Tohatsu/Nissan | 369-87122-1 / 369-871221 / 3590-87122-1 |
| Sierra | 18-7765 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury and Mariner, this kit fits various 4–8 HP 2-stroke models manufactured between 1984 and 2006, specifically covering 6C, 6D, and 8C models with WMC series carburetors.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 6HP | 6 | 2-Stroke | 1984–2006 | 11502M | Models: 6C, 6D - Codes 6H8 & 6H6 |
| Mercury | 8HP | 8 | 2-Stroke | 1984–2006 | 11502M | Model: 8C - Code 6G1 |
| Mariner | 4HP | 4 | 2-Stroke | 1984–2006 | 11502M | |
| Mariner | 5HP | 5 | 2-Stroke | 1984–2006 | 11502M | |
| Mariner | 6HP | 6 | 2-Stroke | 1984–2006 | 11502M | Models: C, D |
| Mariner | 8HP | 8 | 2-Stroke | 1984–2006 | 11502M | Model: C |
For Yamaha, this kit covers popular 3–8 HP 2-stroke engines made between 1984 and 2002.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 3HP | 3 | 2-Stroke | 1988–2002 | 6G1-W0093-00-00 | |
| Yamaha | 4HP | 4 | 2-Stroke | 1984–1996 | 6G1-W0093-00-00 | |
| Yamaha | 5HP | 5 | 2-Stroke | 1984–1996 | 6G1-W0093-00-00 | |
| Yamaha | 6HP | 6 | 2-Stroke | 1984–1996 | 6G1-W0093-00-00 | |
| Yamaha | 8HP | 8 | 2-Stroke | 1984–1996 | 6G1-W0093-00-00 |
Technical Specs
- Product Type
- Carburetor Repair/Rebuild Kit
- Installation
- Direct OEM replacement
- Fuel Type
- Gasoline (petrol)
- Package Dimensions
- 19 × 12 × 2 cm
- Weight
- 15–26 g (package weight varies)
- Warranty
- 1-year manufacturer against defects
- Compatible Carburetors
- WMC-series, KB-series
- Other Technical Attributes
- ISO9002 certified factory production
What’s in the Box
- 1 x Screw, Pilot (679-14923-00-00)
- 1 x Cap (6G1-14966-00-00)
- 1 x Gasket (6G1-14126-00-00)
- 1 x Cap (679-14966-00-00)
- 1 x O-Ring (6G1-14984-00-00)
- 4 x Screw, With Washer (97980-04114-00)
- 1 x Float (6G1-14985-00-00)
- 1 x Valve, Needle (6G1-14546-01-00)
- 1 x Pin, Float (676-14186-00-00)
- 1 x Pin, Float Arm (688-14548-00-00)
Installation Notes
- Turn off the fuel supply and safely disconnect the fuel line from the carburetor.
- Remove the carburetor assembly from the engine.
- Disassemble the carburetor on a clean, organized surface, taking photos as you go to remember the order of components.
- Clean all metal parts thoroughly with a dedicated carburetor cleaner spray. Never spray cleaner on rubber or plastic parts.
- Carefully replace the old gaskets, O-rings, seals, needle valve, and other wear items with the new parts provided in the kit.
- Reassemble all components, ensuring the float is set to the correct height as specified in your engine's service manual.
- Reinstall the rebuilt carburetor onto the engine and securely reconnect the fuel line.
- Start the engine and, once warm, perform final adjustments to the idle speed and air/fuel mixture screws for smooth operation.
Troubleshooting & FAQ
How do I know if this kit fits my engine?
This kit is designed for specific Mercury, Mariner, and Yamaha models. It is critical to verify your engine's model, horsepower, and year against our compatibility charts. This kit is only confirmed to fit WMC-series and KB-series carburetors.
My engine bogs down or won't idle. Will this kit fix it?
A faulty carburetor is a common cause of poor idling, stalling, and hesitation. This rebuild kit replaces the most common wear items—such as gaskets, O-rings, and the needle valve—that degrade over time and cause fuel delivery problems.
What are the signs of a failing carburetor?
Common symptoms include difficulty starting, rough idling, engine stalling at low speeds, black smoke from the exhaust (running rich), or a noticeable decrease in engine performance and fuel efficiency. Fuel leaks around the carburetor body are also a clear sign it needs service.
How often should a carburetor be rebuilt?
For preventative maintenance, it is good practice to rebuild the carburetor every 1-2 seasons, especially if the engine is used in saltwater, if you notice performance issues, or if fuel has been left in the carburetor for extended periods.
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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