3301-9012A14 Carburetor Fits Mercury Mariner

Product Overview

XR MARINE · CARBURETORS & REPAIR KITS

3301-9012A14 Carburetor Fits Mercury Mariner

This XR Marine product is a complete carburetor unit intended for replacing the top-position carburetor on compatible 1987–1989 Mercury Mariner 2-stroke outboard engines (70 HP, 75 HP, 80 HP and 90 HP). It is a replacement carburetor rather than a carburetor repair kit. Because multi-carburetor outboards use position-specific configurations, verify that your repair requires the top mounting position and match your original part reference before ordering.

Product Specifications

Key product details for identification and comparison.

Fitment

The 3301-9012A14 Carburetor from XR Marine fits Mercury Mariner 70 HP, 75 HP, 80 HP and 90 HP 2-Stroke outboard engines as the top-position carburetor in the model-year applications listed below.

Verify your engine identification plate against the individual year entries below, compare the complete OEM reference number including its suffix, and confirm that the carburetor is for the top mounting position. Horsepower alone is not sufficient to confirm compatibility.

• Brand: Mercury Mariner | Power: 70 HP | Year: 1987 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 70 HP | Year: 1988 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
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• Brand: Mercury Mariner | Power: 70 HP | Year: 1989 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 75 HP | Year: 1987 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 75 HP | Year: 1988 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 75 HP | Year: 1989 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 80 HP | Year: 1987 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 80 HP | Year: 1988 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 80 HP | Year: 1989 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 90 HP | Year: 1987 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 90 HP | Year: 1988 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! Check conditions
• Brand: Mercury Mariner | Power: 90 HP | Year: 1989 | Stroke: 2-Stroke | Condition: Carburetor position: Top; confirm the original part reference before purchase
  ! 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.

What's Included

Check the supplied components before planning your repair.

• Carburetor — Quantity: 1 (Reference: 3301-9012A14)

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 Part Identification and Prepare the Engine: Before beginning removal, confirm that the engine is switched off, cool, and properly ventilated away from ignition sources. Isolate the fuel supply and ignition system according to your service manual. Compare the replacement unit against the existing top-position carburetor on your engine—checking the casting markings, full reference suffix, throttle/choke linkage orientation, and fuel line routing.
2. Remove the Old Unit and Install the Top Carburetor: Document or photograph the routing of hoses and synchronization linkages connected to the top carburetor. Remove the existing top carburetor following your Mercury Mariner service manual procedures, inspect the mounting flange surface, and install the replacement carburetor in the top position. Reconnect the fuel lines and linkage hardware, verifying that the throttle and choke mechanisms move smoothly through their full range without binding against adjacent carburetors.
3. Check for Leaks and Perform Service Manual Adjustments: Prime the fuel system and thoroughly inspect all hose connections, fittings, and gaskets for any signs of fuel leakage before starting the engine. With a proper cooling water supply connected, start the engine and follow your service manual procedures to check carburetor synchronization and idle mixture/speed adjustments. Shut the engine down immediately if any fuel leak, linkage sticking, or abnormal running condition is observed.

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 individual year entry and any serial-number or version restrictions.
• 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.
• Confirm that your repair specifically requires the top-position carburetor on your multi-carburetor 2-stroke outboard.
• Verify that you need a complete replacement carburetor unit rather than a carburetor rebuild or repair kit.

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.