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Carburetor Rebuild Kit – Fits Mercury/Yamaha 75-100HP 4-Stroke (Replaces 804346T1, 67F-W0093-00-00)

Regular price $26.50

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Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.


If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

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 Rebuild Kit – Fits Mercury/Yamaha 75-100HP 4-Stroke restores carburetor performance and efficiency. It is designed for Mercury/Mariner 75-90HP 4-Stroke models (2000 and up) and Yamaha F75, F80, F90, and F100 4-Stroke outboards (1999–2002).

It serves as a direct interchange for Sierra 18-7743, Mallory 9-37512, Mercury 804346T1, 804346T02, and Yamaha 67F-W0093-00-00.

  • Engineered for a direct OEM replacement fit and function.
  • Includes a new float for a complete carburetor overhaul.
  • Designed for use with standard gasoline fuel systems.

Part Number Matrix

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

Brand Part Number Notes
Mercury 804346T1 OEM
Mercury 804346T02 OEM
Yamaha 67F-W0093-00-00 OEM
Sierra 18-7743 Aftermarket
Mallory 9-37512 Aftermarket

Engine & Model Compatibility

Confirm your engine model and year in the table below.

For Mercury/Mariner outboards, this kit is verified for 75HP and 90HP 4-stroke models from 2000 to 2005.

For Yamaha outboards, this kit fits various F75, F80, F90, and F100 4-stroke models manufactured between 1999 and 2002.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury F75 75 HP 4-Stroke 2000–2005 804346T1, 804346T02
Mercury F90 90 HP 4-Stroke 2000–2005 804346T1, 804346T02
Yamaha F75 75 HP 4-Stroke 1999–2002 67F-W0093-00-00
Yamaha F80 80 HP 4-Stroke 1999–2002 67F-W0093-00-00 Including F80A models
Yamaha F80 TLR 80 HP 4-Stroke 1999–2001 67F-W0093-00-00
Yamaha F90 90 HP 4-Stroke 1999–2002 67F-W0093-00-00
Yamaha F100 100 HP 4-Stroke 1999–2002 67F-W0093-00-00 Including F100A models
Yamaha F100 TLR 100 HP 4-Stroke 1999–2001 67F-W0093-00-00
Yamaha F100 TRZ 100 HP 4-Stroke 1999–2001 67F-W0093-00-00

Technical Specs

Product Type
Carburetor Repair Kit with Float
Installation
Direct OEM replacement
Fuel Type
Gasoline
Connection
Direct fit to OEM carburetor
Weight
48g (1.7 oz)
Warranty
1 Year
Included Components
Complete carburetor rebuild kit with float

What’s in the Box

  • 1 x Complete Carburetor Repair Kit with Float

Installation Notes

  1. Safety First: Disconnect the battery and fuel supply in a well-ventilated area before starting.
  2. Removal: Carefully detach the carburetor assembly from the engine manifold.
  3. Disassembly: Take the carburetor apart on a clean, organized surface. Taking photos as you go can help with reassembly.
  4. Cleaning: Thoroughly clean all metal components with a dedicated carburetor cleaning solvent. Do not use cleaner on non-metallic parts.
  5. Inspection: Examine the old parts for signs of significant wear, cracks, or blockages.
  6. Rebuild: Systematically replace the old gaskets, seals, needle valve, and float with the new components from this kit.
  7. Reassembly: Carefully put the carburetor back together, ensuring all parts are correctly seated and secured.
  8. Final Steps: Re-install the carburetor, reconnect all lines, and check for fuel leaks before starting the engine. Adjust idle as needed per your engine's service manual.

Troubleshooting & FAQ

How do I know if my carburetor needs to be rebuilt?

Common signs include difficulty starting, rough idling, stalling, poor acceleration, hesitation, or black smoke from the exhaust. Visible fuel leaks are also a clear indicator that service is required.

Will this kit fit an engine model not listed in the compatibility chart?

We can only guarantee fitment for the specific Mercury, Mariner, and Yamaha models, years, and horsepower ratings listed in the compatibility table. To avoid ordering the wrong part, please verify your OEM part number against our Part Number Matrix.

Does this carburetor kit include new jets?

This is a standard repair kit containing essential wearable components like gaskets, seals, O-rings, a needle-valve assembly, and a float. Main and pilot jets are not included and should be cleaned and inspected separately during the rebuild.

Is the included float pre-adjusted?

The float is manufactured to precise OEM specifications. However, we always recommend verifying the float height against your engine's service manual during installation to ensure optimal fuel levels.

How often should a marine carburetor be rebuilt?

There is no fixed service interval. Rebuild frequency depends on factors like hours of use, fuel quality (especially with ethanol-blended fuels), and off-season storage procedures. Rebuild when performance issues arise.

Is this the same as an OEM part?

This is an aftermarket replacement part, not an OEM component. It is built to meet or exceed OEM-level specifications using comparable materials. All our parts are manufactured in an ISO 9002 certified facility and are batch-inspected for quality control.

What are the shipping speed and cost?

We ship worldwide. Standard shipping is typically free, with transit times averaging 5–15 days to most regions. Expedited shipping options and exact costs are displayed at checkout where available.

What is the warranty and return policy?

This kit is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter any issues, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition.

Safety & Important Info

  • Verify images and specifications against your original part before ordering. If anything differs—even if your model appears on the compatibility list—do not purchase.
  • This is an aftermarket replacement part, not an OEM component. Brand names and part numbers are used for reference purposes only.
  • Professional installation is highly recommended for safety and optimal performance. Improper installation can lead to fuel leaks or poor engine function.

About Sea Sierra

  • Pro-Grade Standards: We supply marine parts engineered to OEM-level tolerances and rigorously tested for real-world reliability.
  • Fast Global Fulfillment: We offer free standard delivery to most regions, with typical transit times of just 5–15 days.
  • Manufacturer-Direct Value: By removing middlemen, we deliver fair pricing without ever compromising on materials or quality control.

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