Carburetor Assembly – Fits Mercury/Mariner 8HP & 9.9HP 4-Stroke Outboards

Carburetor Assembly – Fits Mercury/Mariner 8HP & 9.9HP 4-Stroke Outboards

This carburetor assembly is engineered to fit Mercury/Mariner 8HP and 9.9HP 4-stroke outboard engines (2006–present). It also fits equivalent 8HP and 9.8HP 4-stroke Tohatsu models. It serves as a direct replacement, restoring proper fuel and air mixture for reliable performance.

A notable feature of this part is its ability to upgrade a Mercury 8HP 4-stroke engine to a 9.9HP, as the base engine is identical and the carburetor is the primary differentiating component.

• Installation Type: Direct replacement
• Fuel Compatibility: Gasoline
• Package Includes: 1x Carburetor Assembly, 2x Gaskets

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 Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

• 1 x Carburetor Assembly (Replaces 3303-895110T01/8M0176126)
• 2 x Gaskets Included

Installation Guide

1. Safety First: Ensure the engine is off, cool, and disconnected from the battery and fuel supply.
2. Prepare Workspace: Place a clean rag beneath the carburetor to catch any fuel drips.
3. Disconnect Old Unit: Carefully detach the fuel lines, throttle linkage, and any choke or electrical connections.
4. Remove Carburetor: Unfasten the mounting nuts or bolts holding the carburetor to the engine and remove the old unit and gasket.
5. Clean Surface: Thoroughly clean the intake manifold mounting surface to ensure a proper seal.
6. Install New Gasket: Place the new gasket onto the mounting studs or surface.
7. Mount New Carburetor: Position the new carburetor assembly correctly and secure it with the original nuts or bolts.
8. Torque to Spec: Tighten the fasteners evenly to the manufacturer's recommended torque setting.
9. Reconnect Lines: Re-attach the fuel lines, throttle linkage, and any other connections.
10. Check for Leaks: Turn the fuel supply on and carefully inspect for any leaks before starting the engine.
11. Test Operation: Reconnect the battery, start the engine, and allow it to warm up.
12. Adjust Idle: If necessary, adjust the idle speed screw to achieve a smooth idle per your owner's manual.

Troubleshooting & FAQ

Q: How can I be sure this carburetor fits my Mercury outboard?

A: This carburetor fits 8HP and 9.9HP Mercury/Mariner 4-stroke outboards from 2006 to the present. To ensure compatibility, cross-reference your existing part number with those listed (e.g., 3303-895110T01 or 8M0176126) and check the serial number ranges in the "Compatible Engine Models" table.

Q: Will this carburetor really upgrade my 8HP Mercury to a 9.9HP?

A: Yes. For the specified Mercury/Mariner models, the 8HP and 9.9HP engines share the same base platform. This carburetor is the correct specification for the 9.9HP models and will allow a compatible 8HP engine to achieve its higher horsepower potential.

Q: What are the signs that my old carburetor is failing?

A: Common signs include difficulty starting, rough idling, stalling at low speeds, poor or hesitant acceleration, and excessive black smoke from the exhaust. If you see fuel leaking from the carburetor body, it should be inspected and likely replaced immediately.

Q: OEM vs. Aftermarket?

A: 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.

Q: How fast do you ship and how much does it cost?

A: 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.

Q: What is your warranty and return policy?

A: 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.