Go to
http://www.HondaForeman.com. They have alot of threads about changing the jets and a details diagram as well.
Also, take for about a 30 minute test ride and if your jetting is off, it will sputter at full throttle. Honda Foreman.com will tell you how to do a plug check. You're basically putting in a new spark plug, riding it, and then checking the color of the plug to see if your running rich or lean.