Hi, I recently purchased this atv, and it seems to have a hiccup. When starting it with the choke it sounds fine, however when I try to turn the choke off it begins to hiccup before shutting down. Is this a timing issue? If so, how do I go about adjusting the timing? Any help, ideas, advice would be greatly appreciated!

 

timing is all right take the carburetor and clean it also check the fuel tank for dirt drain all the gas out and put in new.the carb has some very small passages that the fuel flows through. budd68.

 

check to see what colour the exhaust is glowing red is to rich orange is to lean