Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5HP, 3.5HP 2-Stroke (Replaces 3F0-87122-1)

Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5HP, 3.5HP 2-Stroke (Replaces 3F0-87122-1)

This carburetor rebuild kit is designed for Tohatsu and Nissan 2-stroke outboard engines in the 2.5HP and 3.5HP range. It provides a comprehensive solution for restoring carburetor performance and efficiency for models manufactured from approximately 1995 to 2005.

This kit is a direct replacement for Tohatsu part numbers 3F0-87122-1, 3F0-87122-2, and 3F0-W0093-00; Nissan 3F0-87122-1; Sierra 18-7765; and Mercury/Mariner 11502M.

• Comprehensive Kit: Includes essential components such as gaskets, float, needle valve assembly, and float pivot pin.
• Fuel Compatibility: Designed for use with standard gasoline.
• Installation: Suitable for both DIY and professional installation.

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 Repair Kit (3F0-87122-1) including:

• Gaskets
• Float
• Needle valve assembly
• Float pivot pin
• O-rings
• Additional components as shown in original kit

Installation Guide

1. Safety First: Work in a well-ventilated area and disconnect the engine's fuel line and spark plug wire.
2. Remove Carburetor: Carefully detach the carburetor from the engine block, taking note of any linkage and hose connections.
3. Disassemble: Place the carburetor on a clean surface. Methodically disassemble it, laying out parts in order to simplify reassembly.
4. Clean Components: Thoroughly clean all non-replaceable metal parts with a quality carburetor cleaner to remove varnish, dirt, and fuel residue.
5. Install New Parts: Carefully replace the old gaskets, seals, float, and needle valve with the new components from the kit.
6. Reassemble Carburetor: Rebuild the carburetor, ensuring the float height is set to the correct specification. Do not overtighten screws.
7. Reinstall: Mount the rebuilt carburetor back onto the engine, reattaching all linkages and fuel lines securely.
8. Test: Reconnect the spark plug wire, start the engine, and check for fuel leaks and proper idle/throttle response. Adjust as necessary.

Troubleshooting & FAQ

How do I confirm this fits my engine?
Verify your engine's model and year by checking the compatibility tables provided. It is also critical to cross-reference your existing part number with those listed, including Tohatsu 3F0-87122-1 and its equivalents, to ensure a correct match.

What are common signs that my carburetor needs a rebuild?
Symptoms include difficulty starting, rough or unstable idling, stalling at low speeds, engine hesitation upon acceleration, fuel leaking from the carburetor body, and a general decline in fuel economy and performance.

Does this kit include instructions?
This kit includes all the necessary parts for a rebuild. While it does not come with a printed manual, our generic installation guide above provides a clear step-by-step process. For model-specific details, consulting your engine's service manual is recommended.

OEM vs. Aftermarket?
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.

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

What is your warranty and return policy?
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.