Carburetor Assembly for Yamaha 90HP Outboard – OEM Reference 6H1-14301/14302/14303

Product Details

This carburetor assembly is intended for Yamaha 90HP outboard applications. It is supplied as one replacement carburetor assembly, not as a three-piece carburetor kit. The company catalog identifies the product for Yamaha 90HP outboard engines and lists the Yamaha reference numbers below for position and application comparison.

Use the reference numbers, engine model, year, and the original carburetor configuration to confirm compatibility before ordering. The listed references identify top, middle, and bottom application positions; they do not indicate that three carburetors are included in the package.

• Replacement carburetor assembly for Yamaha 90HP outboard applications
• Single assembly supplied per package
• Reference numbers provided for application and position comparison
• Aftermarket replacement; not a Yamaha-branded OEM component

Part Number Matrix

The following Yamaha numbers are reference numbers associated with the applicable carburetor positions. Confirm the exact number and position against your original part before installation.

Engine & Model Compatibility

The company catalog identifies this carburetor assembly for Yamaha 90HP outboard engines. Exact model, year, serial number, stroke, and carburetor position are not specified in the company record, so verify those details before purchase.

Technical Specs

Item Type

Outboard carburetor assembly

Application

Yamaha 90HP outboard

Configuration

Single replacement assembly

Reference Numbers

6H1-14301-04-00, 6H1-14302-02-00, and 6H1-14303-05-00

Brand Status

Aftermarket replacement; not Yamaha OEM-branded

What's in the Box

• 1× Carburetor assembly

Three carburetors are not included. Gaskets, hardware, linkages, cables, and other installation components are included only if specifically shown or stated in the package contents supplied with the product.

Installation Notes

1. Disconnect the battery and shut off the fuel supply before beginning work.
2. Remove the engine cowling and identify the carburetor requiring replacement.
3. Record the original carburetor position and disconnect the applicable fuel lines, throttle linkages, choke components, and other connections.
4. Remove the mounting fasteners and take off the original carburetor assembly.
5. Clean the mating surfaces and inspect the intake area, fuel lines, linkages, and fasteners for damage or contamination.
6. Install suitable new gaskets or seals where required by the engine service procedure.
7. Install the replacement carburetor in the same position and orientation as the original unit.
8. Tighten the mounting fasteners evenly according to the applicable Yamaha service specifications.
9. Reconnect all fuel lines, linkages, and cables, and confirm that the throttle operates freely through its full range.
10. Restore the fuel supply, prime the system, and check carefully for leaks before starting the engine.
11. After installation, check idle speed, throttle operation, fuel delivery, and carburetor synchronization where required by the engine service manual.

Troubleshooting & FAQ

Is this a three-carburetor set?

No. This listing is for one carburetor assembly. The top, middle, and bottom numbers are application reference numbers and do not mean that three assemblies are included.

How do I determine which reference applies to my engine?

Compare the position, physical design, mounting arrangement, and number on your original carburetor with the reference matrix. Also confirm the complete Yamaha engine model, year, serial number, and stroke using the engine identification label and service documentation.

Can I replace only one carburetor?

A single carburetor can be replaced when only one unit is damaged or unsuitable, provided the replacement matches the engine application and position. After installation, inspect fuel delivery and perform any adjustment or synchronization required by the service manual.

Do I need to adjust or synchronize the carburetor after installation?

Adjustment or synchronization may be required after replacement. Follow the procedure and specifications for your exact Yamaha engine model rather than relying on a general setting.

What symptoms may indicate a carburetor problem?

Possible symptoms include hard starting, rough idle, poor acceleration, uneven running, fuel leakage, excessive fuel consumption, or visible corrosion and damage. Fuel-system problems, ignition faults, and linkage issues can produce similar symptoms, so diagnose the engine before replacing parts.

Does the package include gaskets or installation hardware?

Only one carburetor assembly is specified for this product. Gaskets, seals, hardware, and other accessories should not be assumed to be included unless they are explicitly shown or listed with the package.

Is this an OEM Yamaha part?

No. This is an aftermarket replacement. The Yamaha numbers are reference numbers used to compare the application and position; the product is not a Yamaha-branded OEM component.

Shipping speed & cost

We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Warranty and return eligibility are governed by the current store policies. Contact support with your order details before installing a part if you believe it is incorrect or damaged.

Safety & Important Info

• Verify the complete engine model, year, serial number, stroke, carburetor position, and reference number before ordering.
• Do not assume that all Yamaha 90HP outboards use the same carburetor assembly.
• This listing is for one aftermarket carburetor assembly, not a three-piece set.
• Do not operate the engine if fuel leaks are present.
• Professional installation is recommended when fuel-system service or carburetor adjustment is outside your experience.

About Sea Sierra

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