I have a new 08 Foreman 500. The only thing I have noticed so far is that the choke doesn't want to stay out. I pull it out and it creeps back in. I noticed that it would not want to idle and giving it more gas just caused it to run ragged. That was when i noticed the choke was not staying when pulled out. Now I just hold it open until it warms up. Gosh, so many new things to learn about an atv...
There is an adjustment nut you can tighten up with your fingers that clamps down on the cable itslef that will keep the choke cable from drifting close on you.
Look at the choke handle, right below that is a rubber protective cover with a spring clamp. Inside of this rubber is the adjustment nut. Slide the spring type clamp up toward the choke handle about 1/2" from where it was, squeese the rubber hard enough with your fingers and turn it clockwise (this tightens it). Trust me, there is a plastic nut directly under the rubber. I'm guessing Honda put the rubber over the choke cable to keep water from going down and inside of the cable itself?
You're going to have to look at this so you can get the general idea. But if you were to slide the rubber up you'd see the plastic nut I'm talking about. Every Honda I've owned does this same exact thing, so I always turn the nut in and this keeps the choke from creeping back to the off position before the engine is warmed up.
Oh, it's too bad the Honda Service Manual doesn't show this at all (at least mine doesn't). Once you finish adjusting the nut in, remember to make sure the rubber is back into place and the spring clamp is where it came from.
Don't use plyers either. The sharp edges will cut through the protective rubber and water will leak through. And plyers or wrenches will tighten the cable too much and may cause the plastic nut to either strip, or break. It's designed to tighten by hand only.
Good Luck. (Bustamove)