3500XL Kits

natural gas generator conversion kit

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We have Professionally Equipped Yamaha Generators Ready to run on Propane, Natural Gas and Gasoline. Click here to learn more . . .      Want help figuring out which kit to order?  First try our "What Kit Do I Need?" page and

also the new "Simple Explanation" page!





Some Kit Order Links on individual pages are no longer functioning.  We apologize for the inconvenience during this website update.  If the ones on your page are not functioning, please verify what kit is available for your unit and then

click this link "KIT LIST PAGE FOR ALL GENERATORS AND ENGINES" to go to this temporary kit listing page.


Search for any Generator or Engine number. See results below:


Help Links


ALL ENGINES 12hp or smaller use

A & C Kits


ALL ENGINES 13hp or Larger use

Type 1 Kits

Dedicated High Pressure Propane


Type 2 Kits

Bi-Fuel Propane and Gasoline


Type 3 Kits
Dedicated Natural Gas and Low Pressure Propane

Type 4 Kits
Tri-Fuel Natural Gas, Propane, and Gasoline


Remote Start
The parts needed to start a generator remotely by wire or even wireless


What Kit do I need?

Don't know what kit is best for your application?

Click this link for a Simple Chart that should help you decide what is your best kit choice.

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Thursday August 05, 2010

News & Features

Kit Production Update:


 is currently at:

1-3 days

As always, some kits take a little longer due to heavy order volume. 

Kit Center Regular Hours of Operation:

Monday thru Friday

9:00 am - 4:30 pm

Eastern Time.


If you require assistance please fill out a request form using this link

Tech Help

 or the email address found in your Master Conversion Instruction Booklet.




Use your credit card and safely and securely  order on-line.  Or call our office toll free at :


 Monday thru Friday 9-4:30 Eastern time.  You can place your order over the phone if you feel more comfortable doing that or if you would like to speak with a company  representative to answer any further questions you may have. 

Please check our BASIC INFO page first.




For our Canada customers call us here in the U.S. toll free at




If you're not sure what each type of kit means, click on the Quick Help Links to the left for more details.

IF Yes  is in the TYPE column below, that type kit is available for your Generator and clicking on it will allow you to add it to your shopping cart.

If ANR is in the column, please read the information at the bottom of the page.

 Accessories can be ordered using this link: ACCESSORIES



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Type 1


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Type 2


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Type 3


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Type 4









Electric start generators use the same Kits as pull start


We have the correct parts for the engine and they work fine so it is not a performance issue. However, there are two things you should know.
First, using bi-fuel with the single cylinder Generac engines requires that an adapter be installed between the carburetor and the air cleaner.  When installed, the air cleaner is moved out one and one quarter inches (1-1/4").  

As designed, the gasoline choke lever that operates the choke passes through the housing for easy access at the front of the housing.  When the adapter is added, the little plastic button on the tip of the choke lever must be removed and lever must be cut off or bent up to allow the closing and opening of the choke during use on gasoline while the adapter is installed.  It may be inconvenient but there is another option.  If the adapter was removed whenever gasoline was used, the modification of the choke lever would not be necessary. 

Secondly, the little rubber crank case vent hose must be extended by adding a tube to make up for the increased distance.  The rubber is cut, and a tube is added.

Because of these extra requirements necessary to use adapters on these engines, we list them as ANR so that you are aware of the issues prior to ordering.

Please use these links to order the kits listed as ANR




Type 2


Type 4


3500XL thru 5500XL Yes Yes

Use this link to CONTACT US by filling out a request form or contact us

in the U.S. at 1-800-553-5608

or toll free from Canada to our US office 1-800-486-0077.

US Carburetion Kit Center

416 Main Street * Summersville * West Virginia * 26651

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