18-7223 Carburetor Repair Kit for Johnson Evinrude OMC | JLM Marine

18-7223 Carburetor Repair Kit for Johnson Evinrude OMC | JLM Marine

This carburetor repair kit is engineered to restore optimal fuel delivery and performance for Johnson, Evinrude, and OMC outboard motors ranging from 4 HP to 15 HP, covering model years 1968–1993. Whether you're rebuilding a classic 1968 14 HP or maintaining a 1990s-era 4 HP, this kit provides the essential gaskets, seals, and components needed to refresh your carburetor.

This kit directly replaces OEM part numbers 0398453, 398453, 765574, 391305, 398452, 439072, 391937, and aftermarket number 18-7223, ensuring broad compatibility across multiple Johnson/Evinrude carburetor assemblies.

• Complete rebuild solution: Includes all necessary gaskets, seals, and float for comprehensive carburetor restoration
• Wide horsepower range: Fits engines from 4 HP up to 15 HP across two decades of production
• Brand new components: Each kit is quality-tested before shipping to ensure reliable performance

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

Technical Specifications

Package Contents

This carburetor repair kit includes:

• 1 × Complete Carburetor Repair Kit with Float
• All necessary gaskets and seals for carburetor rebuild

Installation Guide

1. Preparation: Disconnect the fuel line and remove the carburetor from the engine. Clean the exterior thoroughly before disassembly.
2. Disassembly: Carefully remove the float bowl, noting the position of jets, needles, and springs. Take photos if needed for reference during reassembly.
3. Remove Old Components: Extract all old gaskets, seals, and the worn float assembly. Use carburetor cleaner to remove deposits from all metal surfaces.
4. Inspect Jets and Passages: Clean all fuel passages and jets with carburetor cleaner and compressed air. Ensure no blockages remain in any orifice.
5. Install New Gaskets: Place new gaskets from the kit in their proper positions. Do not reuse any old seals or gaskets.
6. Install New Float: Install the new float assembly, ensuring the float pin is properly seated. Check that the float moves freely without binding.
7. Set Float Level: Adjust the float height to manufacturer specifications (typically 13/64" or as specified in your service manual). Bend the float tab carefully if adjustment is needed.
8. Reassemble Carburetor: Reinstall jets, needles, and springs in their original positions. Tighten the float bowl using new gaskets from the kit.
9. Reinstall on Engine: Mount the rebuilt carburetor to the engine using a new mounting gasket. Torque fasteners to specification.
10. Reconnect Fuel System: Attach the fuel line and prime the carburetor. Check for any fuel leaks around gasket surfaces.
11. Initial Start: Start the engine and allow it to warm up. Adjust idle mixture and speed screws as needed for smooth operation.
12. Final Inspection: Run the engine through various RPM ranges and verify proper throttle response. Recheck all connections for leaks.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my specific Johnson or Evinrude motor?
A: Check the compatibility table above for your engine's HP rating and year. Cross-reference your original carburetor part number with the numbers listed (0398453, 398453, 765574, 391305, 398452, 439072, or 391937). If your numbers match, this kit will fit.

Q: My engine runs rough after installing the kit. What should I check?
A: First verify that the float level is correctly adjusted—incorrect float height is the most common cause of poor performance. Ensure all jets and passages were thoroughly cleaned before reassembly. Check that all gaskets are seated properly and that no air leaks exist around the carburetor mounting surfaces.

Q: How often should I rebuild my carburetor with this kit?
A: Rebuild intervals depend on usage and fuel quality. For engines used regularly with fresh fuel, rebuild every 2-3 years. If your engine sits for extended periods or uses ethanol-blended fuel, inspect annually and rebuild when you notice hard starting, rough idle, or fuel leaks.

Q: Does this kit include the main jet and needle valve?
A: This kit focuses on gaskets, seals, and the float assembly—the wear items that typically require replacement. If your jets or needle valve are damaged or worn, they should be ordered separately or cleaned and reused if in good condition.

Q: Will this work if my carburetor has corrosion or damage?
A: This repair kit is designed for carburetors with worn gaskets and seals but structurally sound bodies. If your carburetor has significant corrosion, warped surfaces, or cracked castings, a complete carburetor replacement may be necessary instead of a rebuild.

Q: Is this an OEM or aftermarket part?
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.