Re: Yamaha 250hp 2 Cycle - Bogging Down?
Jeff, if you think you have suspect fuel try running off a seperate 6 or 12 gallon tank. I just had similar problems with my engine and when I ran on six gallon tank the engine ran great. Also I have had luck with a quicksilver product called power tune in an carburated engine a couple years ago. Hope this helps and good lick.
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