Hopefully this video is helpful to anyone looking to convert their Kawasaki KFX, KFX90, Arctic Cat DVX50, DVX90 or Kymco Mongoose 50, 70 or 90 ATV to a manual choke carb with adjustable idle mixture. Want to rejet your stock carb? (I’m testing different combinations now so stay tuned)

After dealing with carburetor issues on both my son and daughter’s ATVs I started to research replacements. Unfortunately there wasn’t as much information as I expected.

I was lucky enough to find this bolt in carburetor here:
http://dratv.com/ca20kakfx.html.

The carburetor comes with factory sized jets for a 2007 and up 90cc machine which are 40 and 80. After trying a few combinations, the one that worked the best for me were the factory jets from a 2006 Arctic Cat DVX90 which are a 40 pilot and a 95 main jet. The new jets can be ordered here:
http://www.jetsrus.com/a_jet_kit_atv/...

Please note that you MUST transfer the needle from the new carburetor onto your machine. The slide, cable, top set and everything else will work with the new carburetor except the needle. If you do not change the needle, your machine will not run. The best clip setting for me was 2nd from the lowest position.

(If you have a 50cc machine your ATV will most likely have a size 40 pilot jet and a sized 85-95 main jet depending on the year. I will be testing a few jet sizes on the 50cc machine and will create a separate video with the results.)