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)

This complete carburetor rebuild kit is designed for Yamaha 2-Stroke 40-50 HP (1989–2009) three-cylinder outboard engines, including P40, P50, C40, C50, and PRO50 models. It provides the necessary components to restore fuel delivery and engine performance.

This kit is a direct replacement for Yamaha part numbers 6H4-W0093-04-00 (which supersedes 6H4-W0093-03-00), Sierra 18-7768, and other aftermarket equivalents.

• Includes all components needed to service all three carburetors.
• Engineered for a direct fit to ensure straightforward installation.
• Restores original carburetor function and efficiency.

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.

Technical Specifications

Package Contents

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)

Explosion Diagram

Installation Guide

1. Disconnect the battery terminals and detach the fuel lines, ensuring the fuel supply is shut off.
2. Carefully detach the carburetors from the engine intake manifold.
3. Working on one carburetor at a time, disassemble it on a clean surface. Note the orientation of all parts.
4. Thoroughly clean all non-replaceable metal components with a quality carburetor cleaner to remove varnish and deposits.
5. Systematically replace the old gaskets, seals, O-rings, needle valve, and float with the new components from the kit.
6. Carefully reassemble the carburetor, making sure the float is set to the correct height.
7. Repeat the process for the remaining two carburetors.
8. Reinstall the rebuilt carburetors onto the engine and securely reconnect all linkages and fuel lines.
9. Reconnect the battery, prime the fuel system, and start the engine to test for leaks and proper idle.

Troubleshooting & FAQ

How do I confirm this kit fits my engine?

First, check your engine model and year against the "Compatible Engine Models" table. Second, cross-reference your existing part number with the "Part Number Cross-Reference" table. Pay close attention to the notes regarding engine stroke and part supersessions.

Does this kit service all of my engine's carburetors?

Yes. This kit contains all the necessary components to perform a complete rebuild on all three carburetors for compatible three-cylinder engines.

What are common signs that my carburetors need rebuilding?

Key symptoms include difficulty starting, poor or rough idling, stalling at low speeds, engine hesitation or sputtering, fuel leaking from the carburetors, and a general decrease in engine performance and fuel economy.

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.