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Carburetor Repair Kit – Fits Yamaha 3-8HP, Tohatsu/Nissan 4-5HP, Mercury 6-8HP (Replaces 6G1-W0093-00, 369-87122-1)

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Carburetor Repair Kit – Fits Yamaha 3-8HP, Tohatsu/Nissan 4-5HP, Mercury 6-8HP (Replaces 6G1-W0093-00, 369-87122-1) is backordered and will ship as soon as it is back in stock.


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

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This Carburetor Repair Kit – Fits Yamaha 3HP/6HP/8HP, Tohatsu/Nissan 4HP/5HP, Mercury 6HP/8HP (Replaces 6G1-W0093-00, 369-87122-1) restores performance to small and mid-sized 2-stroke outboard engines. It provides a reliable solution for Yamaha 3HP, 6HP, and 8HP models (1984–2002), Tohatsu/Nissan 4HP, 5HP, 8HP, and 9.8HP models (1990s–2000s), and compatible Mercury Marine 6HP and 8HP outboards.

The kit is a direct aftermarket replacement for Yamaha 6G1-W0093-00 / 6G1-W0093-00-00 / 6G1-14301-01, Tohatsu 369-87122-1 / 3B2-87122-0, Mercury Marine 11502M, Sierra 18-7765, and Mallory 9-37505.

  • Engineered for direct installation on compatible 2-stroke outboard motors.
  • Restores original carburetor function using new gaskets, seals, and critical components.
  • Includes essentials like the float, needle valve, and O-rings for a comprehensive overhaul.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand Part Number
Yamaha 6G1-W0093-00
Yamaha 6G1-W0093-00-00
Yamaha 6G1-14301-01
Tohatsu 369-87122-1
Tohatsu 3B2-87122-0
Mercury Marine 11502M
Sierra 18-7765
Mallory 9-37505

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Yamaha: This kit fits a wide range of Yamaha 3HP, 6HP, and 8HP 2-stroke models manufactured from 1984 to 2002. Please verify your specific model code and year.

Tohatsu/Nissan: Compatible with various 2-stroke 4HP, 5HP, 8HP, and 9.8HP outboards. Ensure your carburetor matches the OEM part number 369-87122-1.

Mercury Marine: Fits specific 6HP and 8HP 2-stroke models that use OEM part number 11502M. This includes some models designated as 6C, 6D, 8C, 6H6, and 6H8.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Yamaha 3MLHP, 3MLHR, 3MLHS, 3MLHT, 3MLHU, 3MLHV, 3MLHW, 3MLHX, 3MLHY 3 2-Stroke 1991–2000 6G1-W0093-00
Yamaha 3MSHP, 3MSHR, 3MSHS, 3MSHT, 3MSHU, 3MSHV, 3MSHW, 3MSHX, 3MSHY, 3MSHZ, 3MSHKZ 3 2-Stroke 1991–2001 6G1-W0093-00
Yamaha 3LF, 3LG, 3LD, 3SD, 3SF, 3SG 3 2-Stroke 1988–1990 6G1-W0093-00
Yamaha 6MLHP, 6MLHQ, 6MLHR, 6MLHS, 6MLHT, 6MLHU 6 2-Stroke 1991–1996 6G1-W0093-00
Yamaha 6MSHP, 6MSHQ, 6MSHR, 6MSHS, 6MSHT, 6MSHU 6 2-Stroke 1991–1996 6G1-W0093-00
Yamaha 6LF, 6LG, 6LD, 6SD, 6SF, 6SG 6 2-Stroke 1988–1990 6G1-W0093-00
Yamaha 6C, 6CMH, 6CMHS, 6CMHL, 6CMHG, 6MH, 6MHL 6 2-Stroke 1984–2012 6G1-W0093-00 Models 6M8, 6M80-6M91 variants
Yamaha 8MLHP, 8MLHQ, 8MLHR, 8MLHS, 8MLHT, 8MLHU 8 2-Stroke 1991–1996 6G1-W0093-00
Yamaha 8MSHP, 8MSHQ, 8MSHR, 8MSHS, 8MSHT, 8MSHU 8 2-Stroke 1991–1996 6G1-W0093-00
Yamaha 8LF, 8LG, 8LD, 8LK, 8LN, 8SD, 8SF, 8SG, 8SK, 8SN 8 2-Stroke 1984–1990 6G1-W0093-00
Yamaha 8C, 8CMH, 8CMHS, 8CMHL 8 2-Stroke 1984–2012 6G1-W0093-00 Models 6N0, 6N00-6N09, 6N0A-6N0C variants
Tohatsu M4, M5, M8, M9.8 4/5/8/9.8 2-Stroke 369-87122-1
Nissan NS4, NS5, NS8, NS9.8 4/5/8/9.8 2-Stroke 369-87122-1
Mercury 6C, 6D models 6 2-Stroke 11502M
Mercury 6H6, 6H8 6 2-Stroke 11502M
Mercury 8C 8 2-Stroke 11502M
Mercury 6G1 8 2-Stroke 11502M

Technical Specs

Product Type
Carburetor Repair Kit
Installation
Direct replacement
Fuel Type
Gasoline (2-stroke engines)
Weight
Approx. 36g (0.08 lb)
Application
For small to mid-sized 2-stroke outboard engines

What’s in the Box

  • 1 x Screw, Pilot (679-14923-01-00)
  • 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 (6G1-14546-00-00)
  • 1 x Pin, Float (676-14186-00-00)
  • 1 x Pin, Float Arm (688-14548-00-00)

Installation Notes

  1. Disconnect the fuel line and safely drain all fuel from the carburetor.
  2. Remove the carburetor from the engine, taking care to label vacuum and fuel lines.
  3. Disassemble the carburetor on a clean surface, organizing parts neatly.
  4. Thoroughly clean all metal components with a quality carburetor cleaner, ensuring all jets and passages are clear of debris.
  5. Carefully replace the old gaskets, seals, float, and needle valve with the new components from the kit.
  6. Reassemble the carburetor components. Check your service manual for the correct float height specification, as this is critical for proper function.
  7. Reinstall the fully assembled carburetor onto the engine, reattaching all lines and linkages.
  8. Start the engine and adjust the idle speed and mixture screws according to your engine's service manual for smooth operation.

Troubleshooting & FAQ

How do I know if this kit will fit my engine?

Your engine model, year, and OEM carburetor part number are the most reliable confirmation. This kit is designed for the specific models listed in the compatibility table. If your engine is not listed, or if your original carburetor part number does not match the cross-references, do not purchase this kit.

What are the signs that my carburetor needs a rebuild?

Common symptoms include hard starting, rough or erratic idling, stalling at low speeds, fuel leaking from the carburetor, and poor acceleration. These issues are often caused by degraded seals, clogged passages, or a malfunctioning float valve, all of which are addressed by this kit.

Does this kit include main or pilot jets?

This kit contains the primary components for a standard rebuild: gaskets, seals, O-rings, a float, and the needle valve assembly. It does not include brass jets (e.g., main or pilot jets), as their sizes differ based on specific engine tuning and model variations. Please review the "What’s in the Box" list for all included parts.

What is the most common mistake during installation?

The most frequent error is an incorrect float height setting after installing the new float and needle valve. An incorrect setting can cause the engine to run too rich (flooding) or too lean (starving for fuel). Always refer to your engine's official service manual for the precise float height specification.

How often should a carburetor be rebuilt?

For preventative maintenance, rebuilding the carburetor every 2-3 seasons is a good guideline, especially for engines used in saltwater environments. If the outboard is stored for long periods with untreated fuel in the carburetor, a rebuild may be needed sooner.

Are any special tools needed to use this kit?

Standard workshop hand tools like screwdrivers, pliers, and wrenches are sufficient for most installations. A can of carburetor cleaner and compressed air are essential for cleaning small passages. A service manual for your specific engine is highly recommended for torque specs and adjustment procedures.

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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