Carburetor Assembly – Fits Tohatsu/Nissan 9.9HP, 15HP, 18HP Two-Stroke (Replaces 3G2-03100-0)

Carburetor Assembly – Fits Tohatsu/Nissan 9.9HP, 15HP, 18HP Two-Stroke (Replaces 3G2-03100-0)

This carburetor assembly is a direct-fit replacement for two-stroke Tohatsu and Nissan outboard motors, including 9.9HP, 15HP, and 18HP models. It is designed to restore original engine performance and fuel efficiency by replacing a worn or faulty carburetor.

This component directly replaces Tohatsu part numbers 3G2-03100-0, 3G2-03100-1, 3G2-03100-2, 3G2-03100-3, 3G2-03100-4, and 3G2-03100-5, as well as Sierra aftermarket part 18-7848.

• Installation Type: Direct OEM replacement that bolts on with no modifications needed.
• Compatibility: Fits Tohatsu M9.9D2, M15D2, M18E2 and Nissan NS9.9D2, NS15D2, NS18E2 series engines.
• Ready to Install: Includes all necessary internal jets and passages as per original equipment specifications.

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 (3G2-03100-0)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Turn off the fuel supply.
2. Disconnect Lines: Carefully disconnect the fuel line from the carburetor. Note the position of any throttle or choke linkages and disconnect them.
3. Remove Old Carburetor: Unscrew the mounting bolts holding the carburetor to the engine manifold. Remove the old carburetor and the old gasket.
4. Clean Surface: Thoroughly clean the manifold mounting surface to ensure a proper seal. Remove any old gasket material or debris.
5. Mount New Carburetor: Place the new gasket and carburetor onto the manifold, then secure it with the mounting bolts. Tighten them evenly.
6. Reconnect: Reattach the throttle and choke linkages and the fuel line.
7. Test: Turn the fuel supply back on and check for leaks. Start the engine and check for smooth idling and proper throttle response. Adjust idle settings if necessary.

Troubleshooting & FAQ

Q: How do I confirm this carburetor fits my specific engine?

A: The best way is to check your original part number. This carburetor replaces Tohatsu part numbers 3G2-03100-0 through 3G2-03100-5 and Sierra 18-7848. You can also match your engine model (e.g., M15D2, NS18E2) with our compatibility table.

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

A: Common symptoms include difficulty starting, stalling at low speeds, rough idling, engine hesitation on acceleration, black smoke from the exhaust, or visible fuel leaks from the carburetor body.

Q: Are any adjustments needed after installation?

A: Our carburetors are preset to factory specifications, but minor idle speed or air/fuel mixture adjustments may be necessary depending on your specific engine's condition and local altitude.

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.