Carburetor Rebuild Kit – Fits Johnson/Evinrude 18-75 HP 2-Stroke Outboards (Replaces 396701, 398729, 392061)

This carburetor rebuild kit provides the essential components to restore performance to Johnson/Evinrude 18-75 HP 2-stroke outboard engines. It is designed as a direct-fit replacement for numerous OEM part numbers, ensuring a reliable repair for 2-cylinder and 3-cylinder engines. The kit is also compatible with select Mercury/Mariner models that use the interchangeable BRP/OMC part 879054A1.

This kit directly replaces Johnson/Evinrude part numbers 396701, 398729, 392061, 384413, 390134, 777717, 383317, 383892, 390075, 390077, 387856, 384412, 388524, 88796; Mercury/Mariner part number 879054A1; Sierra part numbers 18-7042, 18-7222; Mallory part numbers 9-37105, 9-37107; and GLM part number 40560.

• Installation: Direct replacement for original components.
• Fuel Compatibility: Designed for use with standard gasoline.
• Complete Kit: Includes all necessary gaskets, seals, float, and needle valve assembly for a full rebuild.

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. Models highlighted in red are NOT compatible with this kit.

For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson/Evinrude Serial Number Guide.

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.

Johnson/Evinrude Models

Mercury/Mariner Models

Technical Specifications

Package Contents

• 1 x Gasket, Bowl (OEM 0338880)
• 1 x Gasket, Cover
• 1 x Washer, Screw Plug
• 1 x Washer, Idle Passage
• 1 x Hinge Pin, Float
• 1 x Float Valve & Seat Assembly (OEM 0396522)
• 1 x Washer
• 1 x Spring Clip
• 1 x Float Assembly
• 1 x Additional Gasket

Installation Guide

1. Safety First: Before starting, disconnect the battery and fuel lines to prevent accidents. Work in a well-ventilated area.
2. Remove Carburetor: Carefully detach the carburetor from the engine, taking note of all linkage and hose connections.
3. Disassemble: Place the carburetor on a clean workbench. Systematically disassemble it, laying out all parts in order to ensure correct reassembly.
4. Clean Components: Thoroughly clean all metal components with a quality carburetor cleaner to remove varnish, grime, and deposits. Do not use cleaner on non-metal parts.
5. Replace Parts: Install the new gaskets, O-rings, and seals from the kit. Ensure all surfaces are clean and dry before installing new gaskets.
6. Install Needle & Seat: Carefully install the new needle valve and seat assembly. This is critical for proper fuel flow control.
7. Install Float: Attach the new float and verify its height is set to your engine's specifications. Proper float level is essential for engine performance.
8. Reassemble Carburetor: Carefully reassemble the carburetor, referring to your notes or a service manual to ensure all parts are correctly placed.
9. Reinstall Carburetor: Mount the rebuilt carburetor back onto the engine and reconnect all linkages and fuel lines.
10. Final Checks: Reconnect the battery. Start the engine and carefully check for any fuel leaks. Let the engine warm up and adjust the idle mixture and speed screws as needed.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific engine model?

A: The best way is to match your engine's original part number to the numbers listed in our "Part Number Cross-Reference" table. You should also check your engine's horsepower and year against the "Compatible Engine Models" chart to ensure it falls within the specified range. IMPORTANT: If you have a 1989-1992 model year 40HP, 48HP, or 50HP engine, this kit will NOT fit. Please check the warning box at the top of this page.

Q: I have a 1989-1992 Evinrude/Johnson 40/48/50HP engine. What kit do I need?

A: Your engine requires a carburetor kit containing the OEM 0338884 float bowl gasket (irregular shape) and OEM 0396521 needle valve assembly. This standard kit does NOT include these parts. Please contact us for alternative solutions or search for specialized kits for your model year.

Q: What are common signs that my carburetor needs to be rebuilt?

A: Symptoms indicating a needed rebuild include difficulty starting the engine, rough or unstable idling, stalling at low speeds, hesitation or bogging on acceleration, and excessive black smoke from the exhaust, which can indicate a rich fuel mixture.

Q: Is it necessary to replace the float when rebuilding the carburetor?

A: Yes, this kit includes a new float and it is highly recommended to replace it. Over time, original floats can absorb fuel, develop pinhole leaks, or degrade, which alters the fuel level in the bowl and can cause persistent flooding or starving issues.

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

• ⚠️ This kit is NOT compatible with 1989-1992 Johnson/Evinrude 40HP, 48HP, and 50HP engines. These models require different gasket and needle valve specifications.
• 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.