Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5-3.5HP 2-Stroke (Replaces 3F0-87122-1, 18-7765, 11502M)
Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5-3.5HP 2-Stroke (Replaces 3F0-87122-1, 18-7765, 11502M) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5-3.5HP 2-Stroke (Rep...
Product Details
This Carburetor Repair Kit – Fits Tohatsu/Nissan 2.5HP, 3.5HP 2-Stroke (Replaces 3F0-87122-1) is designed to restore the function of carburetors on Tohatsu and Nissan 2-stroke outboard engines in the 2.5HP and 3.5HP range. It is compatible with a wide variety of models manufactured from approximately 1995 to 2005.
This kit provides a direct interchange for Tohatsu 3F0-87122-1, 3F0-87122-2, and 3F0-W0093-00; Nissan 3F0-87122-1; Sierra 18-7765; and Mercury/Mariner 11502M.
- Installation can be performed by a DIY enthusiast or a professional mechanic.
- Includes all essential components for a standard rebuild, such as gaskets, float, and needle valve assembly.
- Engineered for use with standard gasoline fuel systems.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| Tohatsu | 3F0-87122-1 |
| Tohatsu | 3F0-87122-2 |
| Tohatsu | 3F0-W0093-00 |
| Nissan | 3F0-87122-1 |
| Sierra | 18-7765 |
| Mercury/Mariner | 11502M |
Engine & Model Compatibility
Confirm your engine model and year in the table below to ensure accurate fitment.
Tohatsu Models: This kit fits select M2.5 and M3.5 series 2-stroke outboards from the mid-1990s through the mid-2000s.
Nissan Models: Fits various NS2.5 and NS3.5 series 2-stroke models, primarily from 1995–2005.
Mercury/Mariner Models: Cross-referenced for some 2.5HP 2-stroke models, but specific year and model data is limited. Please verify your OEM part number is 11502M.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Tohatsu | M2.5A2 | 2.5 | 2-Stroke | 2002–2004 | 3F0-87122-1 | |
| Tohatsu | M3.5A | 3.5 | 2-Stroke | 2002 and earlier | 3F0-87122-1 | |
| Tohatsu | M3.5A2 | 3.5 | 2-Stroke | 2002–2005 | 3F0-87122-1 | |
| Tohatsu | M3.5B | 3.5 | 2-Stroke | 2002 and earlier | 3F0-87122-1 | |
| Tohatsu | M3.5B2 | 3.5 | 2-Stroke | 2002–2005 | 3F0-87122-1 | |
| Nissan | NS2.5A2 | 2.5 | 2-Stroke | 1995–2005 | 3F0-87122-1 | |
| Nissan | NS3.5A2 | 3.5 | 2-Stroke | 1995–2005 | 3F0-87122-1 | |
| Nissan | NS3.5B | 3.5 | 2-Stroke | 1995–2005 | 3F0-87122-1 | |
| Nissan | NS3.5B2 | 3.5 | 2-Stroke | 1995–2005 | 3F0-87122-1 | |
| Mercury/Mariner | Various | 2.5 | 2-Stroke | 11502M | Limited model information available |
Technical Specs
- Product Type
- Carburetor Repair/Rebuild Kit
- Installation
- DIY or Professional
- Fuel Type
- Gasoline
- Weight
- 36g
- Warranty
- 1-year against manufacturing defects
- Included Components
- Includes gaskets, float, needle valve assembly, and float pivot pin
What’s in the Box
- Gaskets
- Float
- Needle valve assembly
- Float pivot pin
- O-rings
- Additional components as shown in original kit
Installation Notes
- Shut off the fuel supply and safely disconnect the fuel line from the carburetor.
- Carefully remove the carburetor from the engine, taking note of all linkage and hose connections.
- Disassemble the carburetor on a clean surface, methodically organizing all parts.
- Thoroughly clean all non-replaceable metal components with a quality carburetor cleaner.
- Carefully remove old gaskets and O-rings, ensuring sealing surfaces are clean and free of debris.
- Install the new components from the kit, including the float and needle valve assembly.
- Reassemble the carburetor, ensuring all parts are correctly seated and screws are properly tightened.
- Reinstall the carburetor onto the engine, reconnecting all linkages and fuel lines. Check for leaks before starting.
Troubleshooting & FAQ
How do I know if this kit will fit my engine?
This kit is specifically designed for Tohatsu and Nissan 2.5HP and 3.5HP 2-stroke outboards, primarily from 1995–2005. The best way to ensure compatibility is to match your engine's model and year to our Engine Compatibility table. Some sources indicate the kit may not fit very old models (pre-1990), so verifying part numbers is critical.
What are common signs that my carburetor needs to be rebuilt?
Symptoms of a failing carburetor include difficulty starting the engine, rough or inconsistent idling, stalling at low speeds, engine hesitation upon acceleration, and visible fuel leakage from the carburetor body.
Does this kit include a new float jet (needle valve)?
p>Yes, this kit includes the essential needle valve assembly and corresponding float, which are critical for regulating fuel flow into the carburetor bowl.My engine is a Mercury 2.5HP. Will this kit work?
This kit is a direct cross-reference to Mercury/Mariner part number 11502M. However, detailed model and year information for Mercury is limited. We strongly recommend you verify that 11502M is the correct OEM part number for your specific engine before purchasing.
Is it difficult to rebuild a carburetor with this kit?
For individuals with mechanical experience, rebuilding a small outboard carburetor is a straightforward task. If you are unfamiliar with the process, we recommend consulting a service manual for your specific engine or seeking assistance from a qualified marine mechanic.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
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