Carburetor Assembly – Fits Tohatsu/Nissan 4-Stroke 8HP & 9.8HP (Replaces 3DP-03100-0)

Carburetor Assembly – Fits Tohatsu/Nissan 4-Stroke 8HP & 9.8HP (Replaces 3DP-03100-0)

This carburetor assembly is a direct replacement for Tohatsu and Nissan 4-stroke outboard engines, including 8HP MFS8/NSF8 and 9.8HP MFS9.8B/MFS9.8A3/MFS9.8A2/NSF9.8A models from 2003 and newer. It is also compatible with equivalent 8HP and 9.8HP 4-stroke Mercury/Mariner models that are based on Tohatsu powerheads.

This unit is engineered to directly replace Tohatsu part numbers: 3DP-03100-0, 3DP-03133-0, 3V2-03100-2, 3V2-03133-2, 3V1-03100-2, 3V1-03133-2, 3DN-03100-0, 3DN-03133-0, 3V2-03100-3, and 3FS-03100-0.

• Installation Method: Direct replacement for a hassle-free installation.
• Fuel Compatibility: Designed for use with gasoline.
• Included Parts: Comes as a complete assembly for a comprehensive replacement.

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.

Technical Specifications

Package Contents

• 1 x Carburetor Assembly (Replaces 3DP-03100-0 / 3DP-03100-2 / 3V2-03100-2 / 3V2-03100-3 / 3FS-03100-0)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Shut off the fuel supply line.
2. Remove Cowling: Take off the engine cover to access the carburetor.
3. Document Connections: Before disconnecting, take a clear photo of the old carburetor, noting the routing of fuel lines, throttle linkage, and choke linkage.
4. Disconnect Hoses & Linkages: Carefully disconnect the fuel hoses, throttle cable, and any other electrical or mechanical linkages attached to the carburetor.
5. Remove Old Carburetor: Unbolt the carburetor from the intake manifold. Be careful not to drop any nuts or bolts into the engine bay.
6. Clean Mounting Surface: Thoroughly clean the gasket surface on the intake manifold to ensure a proper seal.
7. Install New Gasket: Place the new gasket (if included) onto the intake manifold.
8. Mount New Carburetor: Position the new carburetor and tighten the mounting bolts evenly. Do not overtighten.
9. Reconnect: Using your photo as a guide, reconnect all fuel lines, linkages, and electrical connectors. Ensure all connections are secure.
10. Check for Leaks: Turn the fuel supply back on and carefully inspect for any leaks around the carburetor and fuel lines.
11. Test the Engine: Reconnect the battery. Start the engine in a well-ventilated area. Check for smooth idling and response.
12. Adjust if Necessary: Minor adjustments to the idle speed or air/fuel mixture may be required for optimal performance. Reinstall the engine cowling once complete.

Troubleshooting & FAQ

Q: How do I confirm this carburetor fits my engine?
A: We strongly recommend checking your engine's model, horsepower, and year against the "Compatible Engine Models" table. Additionally, cross-reference your existing part number with our list under "Part Number Cross-Reference" to ensure a perfect match.

Q: What are the signs my old carburetor is failing?
A: Common symptoms of a faulty carburetor include difficulty starting the engine, rough or unstable idling, stalling at low speeds, poor acceleration, increased fuel consumption, black smoke from the exhaust, or visible fuel leaks from the carburetor body.

Q: Is this a direct replacement for my OEM carburetor?
A: Yes, this is an aftermarket carburetor designed to be a direct-fit replacement for the original Tohatsu and Nissan models listed. It meets or exceeds OEM specifications for fit and function, requiring no modifications for installation.

Q: Will I need to adjust this carburetor after installation?
A: Our carburetors are pre-adjusted at the factory to standard specifications. However, minor fine-tuning of the idle speed or air-fuel mixture may be necessary to match your specific engine's characteristics and local environmental conditions for peak performance.

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.