Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G Engines (Replaces 146-0657)

Carburetor Repair Kit – Fits Onan P216G, P218G, P220G, P224G Engines (Replaces 146-0657)

This carburetor repair kit is designed for Nikki carburetors used on Onan P-series engines, including the P216G, P218G, P220G, and P224G models. The kit provides the necessary components to rebuild your carburetor and restore it to optimal function.

This kit is a direct replacement for Onan part numbers 146-0657 and 146-0650.

• Compatible with a wide range of Onan P-series, B-series, and OL-series engines.
• Manufactured in an ISO9002-certified facility to meet or exceed OEM specifications.
• Important: This kit is not compatible with generator set (genset) applications.

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.

Compatible Carburetors

This repair kit is specifically designed for the following Nikki carburetor models:

Technical Specifications

Package Contents

• 1 x Mounting Gasket
• 1 x Air Horn Gasket
• 4 x Set Screws
• 1 x Float Valve
• 1 x Float Pin
• 1 x Float Assembly
• 1 x Main Plug Gasket
• 1 x O-Ring (carb to air cleaner)

Note: The accelerator pump kit, if needed, is sold separately as part number 146-0649/146-0658.

Installation Guide

1. Safety First: Disconnect the battery and shut off the fuel supply.
2. Remove Air Cleaner: Take off the air cleaner assembly to access the carburetor.
3. Detach Carburetor: Carefully disconnect fuel lines and linkages, then remove the carburetor from the engine.
4. Disassemble: Take apart the carburetor on a clean surface. Pay close attention to the orientation of the old bowl/cover gasket.
5. Verify Gasket Match: Critically important: Compare your old gasket to the new one. One corner of the gasket in this kit is shaped differently from the other three. If yours does not match, you may need kit 146-0356.
6. Clean Components: Thoroughly clean all metal parts with carburetor cleaner.
7. Install New Parts: Carefully install the new components from this kit, including the float, valve, gaskets, and O-ring.
8. Reassemble: Put the carburetor back together.
9. Reinstall Carburetor: Mount the rebuilt carburetor onto the engine, reattaching linkages and fuel lines.
10. Final Steps: Reinstall the air cleaner, reconnect the battery, and restore the fuel supply.
11. Test and Adjust: Start the engine, check carefully for any fuel leaks, and adjust the idle if necessary.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my carburetor?

A: This kit fits Nikki-branded carburetors only. The most critical step is to visually compare the large bowl/cover gasket with your original part. The gasket in this kit has one corner that is shaped differently from the other three. If the corners of your old gasket are all identical, this kit will not fit, and you should check repair kit 146-0356 instead.

Q: Will this kit work for my Onan generator engine?

A: No, this kit is not intended for generator set (genset) applications. It is designed for the specific P-series, OL-series, and industrial engines listed in the compatibility table.

Q: What is the difference between this kit (146-0657) and kit 146-0437?

A: This kit (146-0657) contains the same float, float valve, and float pin found in kit #146-0437. However, it also includes additional essential items like the main air horn gasket, making it a more comprehensive kit for a full rebuild.

Q: Is the accelerator pump included?

A: No, the accelerator pump and its related components are not included. If your carburetor has an accelerator pump that needs service, that kit is sold separately as part number 146-0649 or 146-0658.

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.