I bought a 1992 yfs 200 that had been sitting for 5+ years. The carb, gas tank, and crankcase were gunk up with sediment. I ordered a carb from ebay. But, it came without the tors switch on top of carb, and wouldn't work on my quad. So, I just took the carb off, took the bottom reservoir cover off, and cleaned it up real good, changed crankcase oil, cleaned out gas tank, and it fired right up. So I would definitely try cleaning the carb 1st before you go and buy the carburetor off ebay. This is the 2nd carb I bought off eBay the 1st one I bought was for a zuki LTZ50. It was Almost a match but I had to do some rigging up to make it Fit on that quad, And it didn't run like a new carburetor should. No matter how many adjustments i made