Carburetor Repair Kit – Fits Yamaha 75/85/90HP, Tohatsu/Mercury 25/30/40HP (Replaces 6H1-W0093-01-00, 346-87122-0)

Carburetor Repair Kit – Fits Yamaha 75/85/90HP, Tohatsu/Mercury 25/30/40HP

This carburetor repair kit provides the essential components to rebuild and restore the function of carburetors on a range of Yamaha, Tohatsu/Nissan, and Mercury/Mariner outboard motors. It is designed to fit 2-stroke Yamaha engines from 75HP to 90HP (1984–2000), 2-stroke Tohatsu/Nissan engines from 25HP to 30HP (1996, 2002–2005), and specific 40HP Mercury/Mariner outboards.

This kit serves as a direct replacement for Yamaha part numbers 6H1-W0093-00-00 and 6H1-W0093-01-00; Tohatsu 346-87122-0 and 346871220M; Mercury 84475M; and Sierra 18-7291.

• Installation Method: Direct replacement of internal carburetor components.
• Fuel Compatibility: Designed for gasoline-fueled engines.
• Complete Kit: Includes gaskets, seals, and other necessary parts for a standard carburetor overhaul.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Carburetor Repair Kit (Replaces 6H1-W0093-01-00 / 346-87122-0 / 84475M)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Shut off the fuel supply and safely disconnect the fuel lines from the carburetor.
2. Remove Carburetor: Carefully unbolt and remove the carburetor assembly from the intake manifold. Note the position of any linkages or hoses.
3. Disassemble: Working on a clean bench, gently disassemble the carburetor. Keep parts organized and take photos if needed for reassembly reference.
4. Clean Components: Thoroughly clean all non-replaceable metal parts with a quality carburetor cleaner to remove varnish, dirt, and deposits. Do not use cleaner on rubber or plastic parts.
5. Install New Parts: Carefully replace the old gaskets, O-rings, needle, and other components with the new parts from the kit. Ensure the float height is set to your engine's specifications.
6. Reassemble: Reassemble the carburetor components in the reverse order of disassembly. Ensure all screws are tightened to the correct torque.
7. Reinstall and Test: Mount the carburetor back onto the engine, reconnecting all linkages and fuel lines. Turn the fuel supply on, check for leaks, reconnect the battery, and start the engine to test for proper function. Adjust idle settings as needed.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?
First, check the "Compatible Engine Models" table on this page. It is critical to match your engine's brand, model, horsepower, and year range. Second, use the "Part Number Cross-Reference" table to verify that this kit replaces your existing carburetor kit's part number. If your part number isn't listed, this kit may not be compatible.

What are the common signs that a carburetor needs to be rebuilt?
Common symptoms include difficulty starting, rough idling, stalling at low speeds, engine hesitation or sputtering upon acceleration, black smoke from the exhaust, and increased fuel consumption. These issues often indicate that internal passages are clogged or components like gaskets and seals have worn out.

Does this repair kit contain every part for my carburetor?
This kit includes all the standard components needed for a typical carburetor rebuild, such as gaskets, seals, and needles. However, specific models can have variations. We strongly recommend comparing the parts shown in the product images to what is currently in your carburetor before ordering.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.