Carburetor Repair Kit – Fits Tohatsu/Nissan 8HP/9.8HP 4-Stroke Outboards (Replaces 3V1-87122-0)

Carburetor Repair Kit – Fits Tohatsu/Nissan 8HP/9.8HP 4-Stroke Outboards (Replaces 3V1-87122-0)

This carburetor repair kit provides the essential components needed to rebuild and service carburetors on Tohatsu/Nissan 4-stroke outboard engines in the 8–9.8HP range. The kit is designed as a direct replacement for OEM part 3V1-87122-0, restoring fuel delivery and engine performance.

This kit is also a direct replacement for Tohatsu 3V1-87122-0/3V1871220M, Mercury 802706A1, Yamaha 66M-W0093-01-00/66M-W0093-00-00, Sierra 18-7738, and Mallory 9-37510.

• Comprehensive Kit: Includes gaskets, O-rings, a float, a needle valve, and other critical components for a full carburetor overhaul.
• Fuel Type: Compatible with standard gasoline.
• Installation: Suitable for both DIY mechanics 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.

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

Technical Specifications

Package Contents

• 1 x Gasket (66M-14398-00-00)
• 1 x Gasket (6L2-14398-00-00)
• 1 x Stopper (66M-14377-00-00)
• 1 x Gasket, Float Chamber (66M-14384-00-00)
• 1 x Float (6L2-14385-00-00)
• 1 x Pin, Float (6E5-14386-01-00)
• 1 x Valve, Needle (6L2-14392-00-00)
• 1 x Gasket (62Y-14399-00-00)
• 1 x Screw, Air Adjusting (12V-14105-00-00)
• 4 x Screw, With Washer (97980-04112-00)
• 1 x O-Ring (5H0-14397-00-00)
• 1 x O-Ring (6F5-14397-00-00)
• 1 x Filter (66M-14827-00-00)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area away from open flames.
2. Disconnect Fuel Line: Carefully disconnect the fuel line from the carburetor, having a rag ready to catch any residual fuel.
3. Remove Airbox: Detach the engine’s airbox or flame arrestor cover to access the carburetor.
4. Remove Carburetor: Disconnect any throttle linkages or hoses. Remove the mounting bolts or nuts holding the carburetor to the intake manifold.
5. Disassemble Carburetor: Place the carburetor on a clean workbench. Carefully disassemble it, taking note of the location of all jets, screws, and gaskets.
6. Clean Components: Thoroughly clean all metal parts with a quality carburetor cleaner. Do not use cleaner on rubber or plastic parts.
7. Install New Parts: Carefully replace the old gaskets, seals, float, needle valve, and other components with the new parts from the kit.
8. Reassemble Carburetor: Reassemble the carburetor in the reverse order of disassembly. Ensure all screws are tightened to the correct torque.
9. Reinstall Carburetor: Mount the rebuilt carburetor back onto the engine, reattaching linkages and fuel lines.
10. Test and Adjust: Reconnect the battery. Start the engine and check for leaks. Adjust the idle and air/fuel mixture screws as needed for smooth operation.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my outboard?
A: Start by checking your original part number against our cross-reference list. Then, verify your engine's model, HP, and year in the "Compatible Engine Models" table. If you are unsure, use the provided guides for Mercury and Yamaha to find your engine details.

Q: What are the common signs my carburetor needs a rebuild?
A: Symptoms include difficulty starting, rough idling, stalling at low speeds, engine hesitation upon acceleration, black smoke from the exhaust, and visible fuel leaks around the carburetor body.

Q: How often should I rebuild my carburetor?
A: There is no fixed interval. A rebuild is necessary when performance degrades or if the engine has been sitting for a long time, especially with old fuel. Ethanol in modern fuels can also accelerate the deterioration of rubber components.

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.