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Carburetor Assembly for Tohatsu/Nissan 2-Stroke Outboards – 3LD-03100-1, 3LD-03100-2, 3LD03100M

Regular price $98.00

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Product Details

This is a single carburetor assembly for selected Tohatsu and Nissan marine outboards. The assembly is intended as a replacement fuel-system component for compatible 2-stroke engines and is supplied as one carburetor assembly.

The listed manufacturer reference numbers are Tohatsu 3LD-03100-1, Tohatsu 3LD-03100-2, and Nissan 3LD03100M. Always compare the number on your original component and the engine model before ordering.

  • Replacement carburetor assembly for compatible Tohatsu/Nissan outboards.
  • Catalog applications include the Tohatsu MX18E2 and MX15/18E2 2-stroke model families.
  • Supplied as a single carburetor assembly; no separate gasket, hardware, or additional accessories are specified as included.

Part Number Matrix

Use the following manufacturer reference numbers to compare your existing carburetor. These references should be checked together with the engine model and year.

Brand Part Number Application Information
Tohatsu 3LD-03100-1 Listed in parts catalogs for MX18E2 and MX15/18E2 2-stroke applications from 2013–2017, with the specific model and year varying by catalog entry.
Tohatsu 3LD-03100-2 Listed in parts catalogs for MX15/18E2 2-stroke applications from 2018–2026.
Nissan 3LD03100M Manufacturer reference number listed for this product.

Engine & Model Compatibility

Compatibility depends on the exact model, year, and original carburetor number. The catalog applications below keep those conditions together and should be used as a reference rather than as a substitute for checking the engine identification plate.

Brand Model Rated HP Stroke Year Manufacturer Part No.
Tohatsu MX18E2 18 2-Stroke 2013 3LD-03100-0
Tohatsu MX18E2 18 2-Stroke 2014 3LD-03100-1
Tohatsu MX15/18E2 15–18 2-Stroke 2015–2017 3LD-03100-1
Tohatsu MX15/18E2 15–18 2-Stroke 2018–2026 3LD-03100-2

Technical Specifications

Product Type
Carburetor assembly
Product Configuration
Single replacement component; not a kit
Engine Type
Selected 2-stroke Tohatsu/Nissan marine outboards
Reference Numbers
3LD-03100-1, 3LD-03100-2, 3LD03100M
Installation
Replacement installation using the engine’s existing mounting, fuel, and throttle-linkage interfaces where compatible
Fuel System
Carbureted gasoline outboard fuel system

What’s in the Box

  • 1 × Carburetor assembly

Separate gaskets, seals, mounting hardware, and adjustment tools are not specified as included. Confirm the package contents against the product images before installation.

Installation Notes

  1. Turn off the engine, allow it to cool completely, and work in a well-ventilated area away from ignition sources.
  2. Disconnect the battery or otherwise prevent accidental starting, following the engine service manual.
  3. Remove the engine cover and identify the carburetor, fuel lines, throttle linkage, and choke linkage.
  4. Label each hose and linkage before disconnecting it so it can be returned to the correct position.
  5. Remove the existing carburetor and inspect the mounting surface, gasket, fuel lines, and linkage components.
  6. Install the replacement assembly with the correct gasket or seal for your engine. A gasket is not specified as included with this product.
  7. Reconnect all fuel lines and linkages, then check that the throttle and choke operate freely through their full range.
  8. Prime the fuel system and inspect carefully for leaks before starting the engine.
  9. Start and test the engine in accordance with the service manual. Verify idle and operating performance before returning the boat to service.

Troubleshooting & FAQ

How do I confirm this carburetor fits my outboard?

Match your engine brand, model, year, stroke, and the number on your original carburetor. The documented applications include Tohatsu MX18E2 and MX15/18E2 2-stroke models, with different reference numbers used across different years. Do not rely on horsepower alone.

Which reference numbers should I compare?

Compare your original component with Tohatsu 3LD-03100-1, Tohatsu 3LD-03100-2, or Nissan 3LD03100M. The earlier 3LD-03100-0 reference appears in the catalog for a 2013 Tohatsu MX18E2 application but is not listed in the company reference-number field for this product, so confirm that application carefully before ordering.

Is this product a kit?

No. The company product record identifies it as a single carburetor product, and the package contents are one carburetor assembly. Gaskets, seals, and mounting hardware are not specified as included.

Will adjustment be required after installation?

Any adjustment or synchronization requirement depends on the engine and service procedure. Follow the applicable engine service manual rather than assuming a universal preset or adjustment specification.

What are common signs of a carburetor problem?

Hard starting, unstable idle, stalling, poor acceleration, fuel leakage, or abnormal exhaust smoke can indicate a carburetor or related fuel-system problem. Inspect the fuel supply, lines, filter, ignition system, and engine settings before replacing components.

Are gaskets or seals included?

They are not specified as included. Inspect the existing gasket and replace it with the correct application-specific gasket or seal if required.

What maintenance is recommended?

Use clean, fresh fuel, keep the fuel system free of contamination, and follow the engine manufacturer’s storage procedure. If the engine will be stored, stabilize or drain the fuel system as directed by the service manual.

Safety & Important Information

  • Verify the engine model, year, stroke, original part number, and connector or linkage arrangement before purchase.
  • Fuel-system work should be performed with the engine cool and in a well-ventilated area away from sparks and open flames.
  • Do not operate the engine if fuel leaks are present.
  • Professional installation is recommended when the correct fuel-system procedure or adjustment is uncertain.
  • This listing identifies a replacement carburetor assembly and does not claim that the product is manufactured by Tohatsu or Nissan.

About Sea Sierra

  • We provide marine replacement components with product information focused on reference-number and application matching.
  • Review the compatibility details and product images carefully before ordering.
  • Contact support if you need help comparing your original carburetor or engine identification details.

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