6H1-14301-04-00 Carburetor Assembly Set

Product Overview

XR MARINE · CARBURETORS & REPAIR KITS

6H1-14301-04-00 Carburetor Assembly Set Fits Yamaha Outboard (90 HP) - XR Marine

This XR Marine carburetor assembly set is intended for replacing a matching carburetor assembly configuration on a Yamaha 90 HP outboard application. It is associated with distinct position-specific primary OEM references: Top (6H1-14301-04-00), Middle (6H1-14302-02-00) and Bottom (6H1-14303-05-00). Because top, middle and bottom references designate different carburetor positions rather than interchangeable numbers for one identical unit, confirm your engine details and full OEM reference numbers including suffixes before ordering.

Product Specifications

Key product details for identification and comparison.

Fitment

The 6H1-14301-04-00 Carburetor Assembly Set from XR Marine fits Yamaha 90 HP outboard applications only when the carburetor version matches the position-specific OEM references listed below.

Verify the complete engine model designation on your engine identification plate and compare the full OEM reference numbers, including all suffixes and position designations (Top, Middle, Bottom), against your service manual or parts catalog. Horsepower or an abbreviated prefix alone cannot confirm compatibility when exact engine model, stroke, year and serial range are not specified.

• Brand: Yamaha Outboard | Model: Outboard; exact model unspecified | Power: 90 HP | Condition: Carburetor version must match the position-specific OEM references (Top: 6H1-14301-04-00; Middle: 6H1-14302-02-00; Bottom: 6H1-14303-05-00); exact model, stroke, year and serial number unspecified
  ! Check conditions

OEM & Part Number References

Use the complete reference number, including its suffix, when comparing parts. Reference numbers do not confirm that every version is interchangeable.

The top, middle and bottom reference numbers identify different carburetor positions; they are not interchangeable identifiers for a single identical component. Do not select solely by the abbreviated reference 6H1-14301/14302/14303 or by 90 HP alone. Available product data does not confirm that these reference numbers are stamped on the product itself.

Installation Guide

General installation overview. Follow the service manual for your exact engine and carburetor configuration. Fuel-system work requires the appropriate skills and precautions.

1. Verify identification and position assignments: Before starting work, compare your engine model plate and factory parts catalog against the position-specific OEM references (Top: 6H1-14301-04-00, Middle: 6H1-14302-02-00, Bottom: 6H1-14303-05-00) and inspect the supplied assemblies.
2. Prepare the outboard safely: Shut off the engine, allow it to cool completely, disconnect the battery or disable the ignition system, and isolate the fuel supply in a well-ventilated workspace away from ignition sources.
3. Label positions, linkages and fuel hoses: Clearly tag the top, middle and bottom carburetor positions along with all fuel lines, vacuum or enrichment hoses, and throttle/choke linkage rods so each component returns to its designated cylinder position.
4. Remove the existing carburetor assemblies: Follow the Yamaha service manual procedure to detach the intake silencer or airbox, disconnect linkages and fuel lines while catching residual fuel safely, and unbolt each carburetor from the intake manifold.
5. Compare mounting flanges and linkage arms: Place each replacement carburetor beside the removed unit from the corresponding top, middle or bottom position to verify throttle shaft orientation, linkage pickup points, fuel inlet routing and mounting surfaces.
6. Install in the correct position order: Mount the matching top, middle and bottom carburetor assemblies with appropriate sealing gaskets in the sequence specified by your service manual, ensuring flanges seat evenly without binding.
7. Reconnect linkages and synchronize: Reattach all fuel lines with secure clamps and connect the throttle and choke linkages. Check that all shutters open and close smoothly and perform multi-carburetor synchronization and adjustments according to the service manual.
8. Check for fuel leaks and test with cooling water: Prime the fuel system and inspect every hose connection and bowl joint for leaks before starting. Run the outboard only with a proper cooling water supply attached, and shut down immediately if any fuel leak, throttle sticking or abnormal running occurs.

Before You Order

A careful fitment check helps you choose the right part the first time.

• Match the full engine model designation on the identification plate.
• Verify your engine year, stroke and serial number in your official Yamaha parts catalog, as specific model-year and serial boundaries are not listed on this page.
• Compare the complete OEM reference number, including its suffix. Horsepower or appearance alone is not enough.
• Confirm the package contents and the quantity needed for your repair.
• Match all three position-specific references—Top (6H1-14301-04-00), Middle (6H1-14302-02-00) and Bottom (6H1-14303-05-00)—rather than relying on the abbreviated prefix 6H1-14301/14302/14303.

Need help checking fitment? Have your engine identification details, the existing part number and clear photos ready when you contact XR Marine.

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Frequently Asked Questions

Answers to common questions about this product and its application.