3B2-03200 Carburetor for Mercury Mariner Tohatsu Nissan | JLM Marine

3B2-03200 Carburetor for Mercury Mariner, Tohatsu & Nissan 2-Stroke Outboards

This aftermarket carburetor assembly is engineered to fit Mercury Mariner 6HP, 8HP, and 9.8HP 2-stroke outboards, as well as Tohatsu and Nissan 8HP and 9.8HP 2-stroke engines. It provides reliable fuel delivery for smooth engine operation and is designed to meet OEM specifications for consistent performance.

This carburetor directly replaces OEM part numbers 3B2-03200, 3K9-03200, and 3G0-03200 across Mercury Mariner, Tohatsu, and Nissan outboard models. It is compatible with both 8HP and 9.8HP engines, with the 9.8HP carburetor design suitable for use on 8HP models as well.

• Includes carburetor assembly with matching gasket (27-16327)
• Designed for 2-stroke outboard engines
• Direct replacement for multiple OEM part numbers

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.

Technical Specifications

Package Contents

• Carburetor Assembly (3B2-03200)
• Matching Gasket (27-16327)

Installation Guide

1. Disconnect the fuel line from the existing carburetor and ensure the engine is cool. Remove the spark plug wire to prevent accidental starting.
2. Remove the old carburetor by loosening the mounting bolts or clamps that secure it to the intake manifold. Note the orientation and position of linkages.
3. Disconnect throttle and choke linkages carefully, taking photos or making notes for reference during reassembly.
4. Clean the mounting surface on the intake manifold, removing any old gasket material or debris to ensure a proper seal.
5. Install the new gasket (27-16327) onto the intake manifold mounting surface. Ensure it is properly aligned.
6. Position the new carburetor onto the intake manifold, aligning it with the mounting holes and gasket.
7. Secure the carburetor with mounting bolts or clamps, tightening evenly to manufacturer's torque specifications (typically hand-tight plus 1/4 turn).
8. Reconnect throttle and choke linkages in the same configuration as the original carburetor, ensuring smooth operation without binding.
9. Attach the fuel line to the carburetor inlet and ensure all connections are secure to prevent leaks.
10. Reconnect the spark plug wire and perform a visual inspection of all connections and fittings.
11. Prime the fuel system by squeezing the primer bulb until firm, then start the engine and check for proper idle and throttle response.
12. Adjust idle speed and mixture screws as needed per your engine's service manual to achieve optimal performance.

Troubleshooting & FAQ

Q: How do I confirm this carburetor fits my specific engine?
A: Cross-reference your engine's model, horsepower, and year with the Compatible Engine Models table above. Verify the OEM part number on your existing carburetor matches 3B2-03200, 3K9-03200, or 3G0-03200. If you have an 8HP Tohatsu or Nissan engine, the 9.8HP carburetor design is compatible.

Q: What are the signs that my carburetor needs replacement?
A: Common symptoms include difficulty starting, rough or inconsistent idle, poor throttle response, black smoke from the exhaust, fuel leaks around the carburetor, or the engine stalling under load. If cleaning and adjusting the existing carburetor doesn't resolve these issues, replacement is recommended.

Q: Can I use the 9.8HP carburetor on my 8HP engine?
A: Yes, the 9.8HP carburetor (3B2-03200) is designed to work with 8HP engines as well. The internal jetting and design are compatible, and this is a common practice for these Tohatsu and Nissan models.

Q: Does the package include the gasket needed for installation?
A: Yes, this carburetor comes with the matching gasket (part number 27-16327) required for proper installation and sealing.

Q: How often should I replace or service my carburetor?
A: Carburetors don't have a set replacement interval but should be cleaned and serviced annually or whenever performance issues arise. Replace the carburetor if internal components are worn, corroded, or damaged beyond cleaning, or if fuel leaks cannot be stopped with new gaskets.

Q: Is this an OEM part or an aftermarket replacement?
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.