I have a 2005 Rancher 350 TRX350TE which gets ridden very little. The machine only has 1,100 miles on it and it has always operated fine in all areas. Just recently, and suddenly, it would start smoothly and run fine for 3 or 4 minutes and quit. After a short wait, it would do the same. I have investigated to the length of my skills, ie: complete fuel flow check including pulling the tank and opening the carb. The fan works fine and all things are clean. I'm at a loss. Any thoughts?