Champion dual fuel generator, convert to nat gas?

ktmrfs wrote:

Gdetrailer wrote:

ktmrfs wrote:

bgum wrote:
It is my understanding that nothing other than piping in natural gas. The change will have a slight effect on watts produced vs fuel consumption.

NOPE. you will need to change the orifice (jet) to go from propane to NG. Same as you would for a BBQ, patio heater, stove, oven etc.

My honda generators have been converted to tri-fuel, The NG orifice is definitely different than the propane orifice.

ktmrfs has it right, even though you are using gas "vapors" with propane or natural, they have differences which changes the fuel to air ratio and pressure delivery will be different between the two..

On carbed small engines, it would be better to add a natural gas conversion kit or specifically designed trifuel carb since there may not be any "orifice" to change like BBQ grills and other "appliances".

See HERE

Per link above ..

"Champion 76533 Natural Gas Kit. This kit fits the Champion 76533 Dual Fuel generator and adds the ability to run it on Natural Gas."

That PN kit is from CENTURY FUEL PRODUCTS and is add on kit including a special natural gas demand regulator..

Additional mods to gen frame may also be required and at $169 is not cheap either.

I did find a "Trifuel" carb made specifically for ability to use gas, propane or natural gas HERE for $28 and typically should fit most Honda "clone" engines 6.5HP-7.5HP (GX170-GX200) which is most likely your better way to go!

It IS a "replacement" carb so you will have to remove your existing dual fuel carb.

Found a YouTube video HERE showing a Champion gen conversion using this carb from Amazon..

yup, when I did my honda conversions the purchase options were dual fuel (gas or propane) or tri fuel (gas, propane, natural gas). switching between propane and natural gas requires changing the orifice as well as adjusting the demand regulator. the kit I have uses the stock carb along with adapter plate and an external Century KN low pressure demand regulator.

The kit I have allows tri fuel use without messing with the carb once the kit was installed, but it uses the same century pressure demand regulator.

Actually the replacement carb I linked does not require "re-jetting" or adjustment of the regulator..

A simple twist of the Orange plastic knob switches from propane to natural gas and with a under $30 price tag a very nice, cheap and easy way to have all three fuels.



According to one review they mentioned..

"Works great. It took about 15-20 minutes to install it on my Wen 4750 generator. I hooked it up to natural gas outlet on my house, turn the gas on, press the prime button for about a second then fired right up. Just a note. Use a minimum of 1/2" hose to insure you have enough volume to run the generator under load. Other wise it will starve for fuel when put under load. Sure beats paying $170-200 for a natural gas conversion kit and don't have to cut the frame. You can still run on gasoline. It does not come with instructions but very easy to install. The orange valve is for switching between LPG (Vertical Position) and NG (Horizontal Position). Also comes with two gaskets. Awesome product. "

The reviewer also mentioned using 1/2" hose for natural gas, do not skimp on that, it WILL need a good source of gas and using too small of hose will affect performance and operation. 3/8" or 1/4" isn't going to cut it for fuel source connection so you will also need to tap into 1/2" natural gas pipe or larger.

Had that carb been available a few yrs ago I would have bought one for my 4Kw gen then.. I bought a spare carb just in case I was not able to get the clogged emulsion tube clean..