Natural Gas to Propane Generator Conversion: A Step-by-Step Guide

[MikePhua]

Converting a generator from natural gas (NG) to propane can offer several advantages, including portability, convenience, and ease of fuel availability. This article explores the process of converting a natural gas-powered generator to propane, the necessary steps involved, and important considerations to keep in mind.
Why Convert from Natural Gas to Propane?
There are several reasons why someone might consider converting a generator from natural gas to propane:

• Fuel Availability: Propane is widely available and can be stored in tanks, making it ideal for remote locations or areas where natural gas is not available.
  
• Portability: Propane tanks can be easily transported, which is beneficial for portable generators used in different locations.
  
• Backup Power: Propane is a reliable backup fuel in case natural gas supply lines are disrupted due to weather events or other factors.
  

Necessary Components for Conversion
To successfully convert a natural gas generator to propane, the following components are typically required:

1. Propane Conversion Kit: This is the most important item in the conversion process. The kit usually includes a propane carburetor, regulator, and the necessary hoses.
   
2. Propane Regulator: A regulator is required to control the pressure of propane gas going to the engine.
   
3. Fuel Lines and Hoses: Depending on the generator model, you may need to replace or modify the fuel lines to accommodate propane.
   
4. Carburetor: In many cases, the existing carburetor used for natural gas will need to be replaced or modified to handle propane.
   
5. Spark Plugs: Propane burns differently than natural gas, and in some cases, you may need spark plugs that are designed for propane to ensure optimal combustion.
   
6. Throttle Kit: Some conversions may require modifications to the throttle system to ensure proper control and air-fuel mixture.
   

Step-by-Step Process for Conversion
Step 1: Safety First
Before beginning any work on the generator, ensure the engine is turned off, disconnected from its power source, and cooled down. Safety should always be the top priority, so work in a well-ventilated area and wear protective gear such as gloves and goggles.
Step 2: Remove Existing Natural Gas Components

• Disconnect the natural gas line from the generator. Be sure to close the gas valve to prevent any leaks during the disconnection.
  
• Remove the natural gas carburetor or modify it if you’re using a conversion kit that allows for the existing carburetor to be retained.
  

Step 3: Install the Propane Conversion Kit

• Mount the new carburetor that comes with the propane conversion kit. This will replace the existing carburetor and ensure that the generator gets the correct fuel mixture for propane.
  
• Attach the propane regulator to the carburetor and connect it to the fuel line. Ensure that the regulator is set to the appropriate pressure for your engine.
  
• Connect the propane tank to the regulator using the appropriate hoses. Make sure all connections are secure and there are no leaks. This is critical for safety.
  

Step 4: Modify Fuel Lines (if necessary)

• If your conversion kit requires new fuel lines, replace the old natural gas lines with the new propane lines. Ensure that they are tightly fitted and resistant to propane gas. Any leaks can lead to dangerous situations, so check carefully for leaks before proceeding.
  

Step 5: Install Spark Plugs (if required)
If your conversion kit recommends new spark plugs for propane, install them as directed. Propane has different combustion characteristics, and using the correct spark plugs can ensure the engine runs smoothly.
Step 6: Adjust the Throttle and Air-Fuel Mixture
Some conversions require modifications to the throttle system. This is done to make sure the engine receives the right air-fuel mixture for optimal performance while using propane. Adjust the air-fuel mixture if your kit provides instructions for doing so.
Step 7: Test the Generator
Once all parts are installed and secured, perform a test run of the generator. Start the engine and check for smooth operation. Pay attention to any unusual sounds, leaks, or performance issues. If everything appears normal, you can proceed to use the generator with propane.
Considerations Before and After Conversion

• Compatibility: Not all generators are suitable for a conversion to propane. Ensure that your generator’s engine is compatible with propane before beginning the conversion. Some engines may require additional modifications.
  
• Fuel Efficiency: Propane burns differently than natural gas, so the generator may consume propane at a different rate. You may need to adjust your fuel tank size accordingly.
  
• Regular Maintenance: After the conversion, perform regular maintenance on the generator to ensure that the propane system continues to function optimally. Check the fuel lines, regulator, and carburetor periodically for wear and tear.
  
• Safety Checks: As with any fuel system, propane systems require regular safety checks. Check for leaks, ensure that all components are in good working order, and keep the propane tank away from heat sources.
  

Conclusion
Converting a natural gas-powered generator to propane can be a straightforward process with the right tools and components. It offers several benefits, including fuel availability and portability. However, it’s essential to carefully follow the installation steps and ensure that all components are properly installed and leak-free to maintain safety. If done correctly, the conversion can extend the functionality and versatility of your generator for various applications.