I want to change the main jet. The carburetor doesn't want to cooperate. I have never saw so many cables and hoses in such a small area. I have changed the jets on Harleys, but never an ATV.

 

Not much different than the H-D, you should be able to loosen the carb up enough to rotate it around to get at the float bowl. Main jet is in the same place as on the newer Twin Cam Keihin carb.
No doubt the float bowl is easier to get at between two cylinders on the Harley than tucked behind one on the Honda!
My 400EX has one of the most buried spark plugs I've ever run across on ANY engine! [img]i/expressions/face-icon-small-disgusted.gif[/img]