Carburetor – Fits Tohatsu/Nissan 4–5 HP 4-Stroke Outboards (Replaces 3R1-03200-1)

Carburetor – Fits Tohatsu/Nissan 4–5 HP 4-Stroke Outboards (Replaces 3R1-03200-1)

This carburetor assembly is designed for Tohatsu and Nissan 4-stroke outboard motors in the 3.5–6 HP range, primarily focusing on 4-5 HP models manufactured from the late 2000s through current production.

Replaces Tohatsu 3R1-03200-1, 3AS-03200-0, 3GV-03200-0, Sierra 18-7608, 18-7365, Mallory 9-34001, and Mercury 803522T.

• Installation Method: Direct OEM replacement for easy installation.
• Gasket Compatibility: Compatible with standard OEM gaskets.
• Material: Constructed from die-cast aluminum for durability.

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.

Technical Specifications

Package Contents

• 1 x Carburetor Assembly (3R1-03200-1)

Explosion Diagram

Installation Guide

1. Shut off the fuel supply and disconnect the battery for safety.
2. Carefully label and disconnect all fuel lines, throttle linkages, and electrical connectors from the old carburetor.
3. Remove the mounting bolts or nuts securing the carburetor to the intake manifold.
4. Gently lift the old carburetor off the engine. Note the orientation of any gaskets.
5. Clean the manifold mounting surface of any old gasket material or debris.
6. Position a new gasket and the new carburetor onto the intake manifold.
7. Hand-tighten the mounting bolts, then torque them to the manufacturer's specified value in a crisscross pattern.
8. Reconnect the fuel lines, throttle linkages, and electrical connectors to their original positions.
9. Turn on the fuel supply and carefully check for any leaks around the carburetor and fuel lines.
10. Start the engine. You may need to adjust the idle and air/fuel mixture screws for smooth operation.

Troubleshooting & FAQ

Q: How can I confirm this carburetor fits my Tohatsu/Nissan engine?

A: Check your engine's model, HP, and year against the "Compatible Engine Models" table. Verifying your original part number against our "Part Number Cross-Reference" table is the most reliable method to ensure an exact match.

Q: What are the signs my old carburetor needs replacement?

A: Common signs of a failing carburetor include difficulty starting, rough idling, engine stalling, poor acceleration, fuel leaks, and black smoke from the exhaust, which indicates a rich fuel mixture.

Q: Is a new gasket required for installation?

A: Yes, it is highly recommended to use a new mounting gasket during installation. This ensures a proper air-tight seal, preventing performance-robbing vacuum leaks and potential fuel leaks.

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.