21-149126 Carburetor Repair Seal Kit

Product Overview

XR MARINE · CARBURETORS & REPAIR KITS

21-149126 Carburetor Repair Seal Kit

This XR Marine product is listed as a Carburetor Repair Seal Kit associated with Mercury Mariner OEM reference 21-149126. It is intended for localized service rather than complete carburetor assembly replacement. In engine parts diagrams for reference 21-149126, the catalog position is commonly identified as “Check Valve” or “Check Valve (Double End)” in the cylinder-block or bleed-system area. Always verify the exact diagram location, serial-number notes, and supplied contents before beginning your repair.

Product Specifications

Key product details for identification and comparison.

Fitment

The 21-149126 Carburetor Repair Seal Kit from XR Marine requires verification against your Mercury Mariner parts diagram and engine serial number before ordering.

Match the full model designation and serial number on your engine identification plate, and compare the complete OEM reference number 21-149126 in your official Mercury Mariner parts catalog. Check the cylinder-block or bleed-system diagram for “Check Valve” or “Check Valve (Double End)” and review any serial-number restrictions; horsepower alone cannot confirm compatibility.

Fitment to Confirm

• Brand: Mercury Mariner | OEM Reference: 21-149126 | Note: Verify “Check Valve” or “Check Valve (Double End)” in the cylinder-block or bleed-system parts diagram and check engine serial-number notes before ordering.
  ? Confirm fitment

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.

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 parts diagram location: Confirm your engine model and serial number against the official Mercury Mariner parts catalog. Locate OEM reference 21-149126 in the carburetor, cylinder-block, or bleed-system diagram and compare the supplied components with the existing part before disassembly.
2. Prepare a safe workspace: Shut off the engine, allow it to cool completely, disconnect the battery or ignition source, and isolate the fuel supply as specified in your service manual. Work in a well-ventilated area away from open flames or sparks.
3. Document hose routing and orientation: Before removing any fuel lines, bleed hoses, or check-valve fittings, take clear photos and note the exact flow direction or port connections shown in your service manual.
4. Remove the old component carefully: Detach the surrounding hoses or fasteners according to the service manual without damaging mating ports, hose barbs, or sealing surfaces.
5. Inspect mating passages and compare parts: Clean the mounting area and inspect connecting hoses for cracks or blockages. Verify that the replacement part matches the original configuration and replace only the components supplied and confirmed for your application.
6. Reinstall according to service manual procedures: Install the new part in the proper orientation, reconnect all lines and linkages securely, and follow your engine service manual for any required adjustments.
7. Check for leaks and test with cooling water supplied: Restore the fuel supply and inspect all connections for fuel or air leaks. Only test-run the engine with the proper cooling water supply connected; shut the engine down immediately if any leak, binding, or irregular operation 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.
• Check the engine serial number and any version restrictions in the official Mercury Mariner parts catalog for your specific engine.
• 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.
• For OEM reference 21-149126, look for “Check Valve” or “Check Valve (Double End)” in the cylinder-block or bleed-system section of the engine parts diagram to verify how the reference is used on your engine.

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

Why XR Marine

Frequently Asked Questions

Answers to common questions about this product and its application.