Carburetor Repair Kit – Fits Tohatsu/Nissan 8HP/9.8HP 4-Stroke (Replaces 3V1-87122-0)
Carburetor Repair Kit – Fits Tohatsu/Nissan 8HP/9.8HP 4-Stroke (Replaces 3V1-87122-0) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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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 8HP/9.8HP 4-Stroke (Rep...
Product Details
This Carburetor Repair Kit – Fits Tohatsu/Nissan 8HP/9.8HP 4-Stroke Outboards contains all essential components to rebuild and restore your outboard's carburetor. It is designed for Tohatsu and Nissan 4-stroke engines in the 8HP to 9.8HP range, ensuring reliable fuel delivery and optimal performance.
The kit serves as a direct interchange for multiple OEM and aftermarket part numbers, including Tohatsu 3V1-87122-0, Mercury 802706A1, Sierra 18-7738, and Yamaha 66M-W0093-01-00.
- Designed for DIY or professional installation.
- Restores fuel delivery by replacing worn gaskets, seals, and needles.
- Aftermarket part engineered to meet or exceed OEM specifications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Tohatsu | 3V1-87122-0 | Also listed as 3V1871220M |
| Mercury | 802706A1 | |
| Yamaha | 66M-W0093-01-00 | Supersedes 66M-W0093-00-00 |
| Sierra | 18-7738 | |
| Mallory | 9-37510 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Tohatsu/Nissan owners: This kit fits specific MFS and NSF 4-stroke models from 2004–2014. Verify your model designation and year range.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Tohatsu | MFS8A2 | 8 | 4-Stroke | 2004 | 3V1-87122-0 |
| Tohatsu | MFS8A3 | 8 | 4-Stroke | 2006–2014 | 3V1-87122-0 |
| Tohatsu | MFS9.8A2 | 9.8 | 4-Stroke | 2004 | 3V1-87122-0 |
| Tohatsu | MFS9.8A3 | 9.8 | 4-Stroke | 2006–2014 | 3V1-87122-0 |
| Nissan | NSF8A2 | 8 | 4-Stroke | 2004 | 3V1-87122-0 |
| Nissan | NSF8A3 | 8 | 4-Stroke | 2006–2014 | 3V1-87122-0 |
| Nissan | NSF9.8A2 | 9.8 | 4-Stroke | 2004 | 3V1-87122-0 |
| Nissan | NSF9.8A3 | 9.8 | 4-Stroke | 2006–2014 | 3V1-87122-0 |
For Mercury/Mariner owners: This kit is listed as compatible with various 8HP and 9.9HP 4-stroke models. Exact year ranges are not specified, so please verify compatibility using the OEM part number 802706A1 before ordering.
| Brand | Model | Rated HP | Stroke | OEM Part No. | Notes |
|---|---|---|---|---|---|
| Mercury | Various 8HP models | 8 | 4-Stroke | 802706A1 | Verify model compatibility |
| Mercury | Various 9.9HP models | 9.9 | 4-Stroke | 802706A1 | Verify model compatibility |
For Yamaha owners: Fits select 9.9HP and 15HP 4-stroke models from the mid-2000s. See the table for specific models.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F9.9 | 9.9 | 4-Stroke | 2005–2007 | 66M-W0093-01-00 | |
| Yamaha | T9.9 | 9.9 | 4-Stroke | 2005–2007 | 66M-W0093-01-00 | |
| Yamaha | F15 | 15 | 4-Stroke | 1998–2007 | 66M-W0093-01-00 | Including F15A, ELH, MHZ, PL variants |
Technical Specs
- Product Type
- Carburetor Repair Kit
- Installation
- DIY or Professional Installation
- Fuel Type
- Gasoline
- Fitting Type
- Direct replacement fits OEM carburetor
- Other Technical Attributes
- Aftermarket replacement part designed to OEM specifications
- Package Dimensions
- ~19 × 12 × 3 cm
- Weight
- ~25-35g with packaging
- Warranty
- 1 year against manufacturing defects (JLM Marine)
What’s in the Box
- 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 Notes
- Disconnect the battery and shut off the fuel supply for safety.
- Carefully remove the carburetor from the engine.
- Disassemble the carburetor on a clean workbench. Take photos during disassembly to track component placement.
- Thoroughly clean all metal parts with a quality carburetor cleaner. Do not soak plastic or rubber parts in harsh solvents.
- Remove the old gaskets, seals, and needle valve.
- Install the new components from the kit, referencing your disassembly photos.
- Ensure the float height is set according to your engine's service manual specifications.
- Reassemble and reinstall the carburetor onto the engine.
- Reconnect the fuel line and battery.
- Start the engine and adjust the idle and air/fuel mixture settings as required by your service manual.
Troubleshooting & FAQ
How do I confirm this kit fits my engine?
The best way is to match the part number from your old carburetor to one listed in the Part Number Matrix. Additionally, verify your engine’s model and year in the compatibility tables. If you are unsure, visually compare our product photos with your existing parts.
What are the signs my carburetor needs rebuilding?
Common symptoms include hard starting, rough idling, stalling at low speeds, fuel leaks, black smoke from exhaust, or a general loss of engine power. These often point to clogged passages or degraded seals that this kit is designed to replace.
Will I need special tools for this installation?
Basic hand tools like screwdrivers, sockets, and wrenches are generally sufficient. A dedicated carburetor cleaner spray is essential. For precise tuning, you may need a float gauge to set the float level to your engine's service manual specifications.
How often should a carburetor be rebuilt?
There's no fixed schedule, as it depends on usage, fuel quality, and storage conditions. A rebuild is recommended every few seasons as preventative maintenance or whenever performance issues appear.
My engine runs rough after installing the kit. What's wrong?
First, confirm all parts were installed correctly. The most common issues are an incorrectly set float level or an improperly adjusted idle mixture screw. Always refer to your engine's official service manual for the correct specifications and adjustment procedures.
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.
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