Glad I found this forum. I am also new here and I just inherited this 4 wheeler from my dad who passed away. He never rode it and it was just parked in the garage, only 500 miles on it. 2002 King Quad 300.
Anyway, just bought a new carb and put it on this weekend. It's a decent project but worth it because the old carb was so gunked up I didn't think a rebuild was possible. Like an idiot, I didn't take pictures of the carb before I took it off so it was just a bunch of guessing to get the vacuum hoses hooked back up. By some stroke of luck I got the quad to fire up and idle like a champ. Took it down the road and it runs really good through the gears.
Only issue I have is after running it down the road and back, it seems to want to die upon approach/downshifting to a stop. I shut it off for a few minutes then fired it right back up and it idles great. For some reason, it ran a little funny after getting warm so I am wondering if its getting too hot? I am unsure the best way to diagnose this as I haven't ran it much.