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550 fan owners BEWARE

244K views 84 replies 52 participants last post by  northstarrick  
An important thing to note: Most sleds older than a year or two were jetted for non ethenol fuel. Now almost all fuel contains 10%. Ethenol makes your engine run leanner. It would be a good idea to richen the needle and mains on all sleds and a fan cooled engine will burn down easier when being a little lean than a liquid cooled one. Next year may have up to 20% ethenol and if people don't jet up there will be massive number of meltdowns. Check your gas pumps to see how much ethenol content.