Yamaha 250hp 2 Cycle - Bogging Down?

[bbh57]

I just worked thru a problem on my 98 carbed yamaha 200. It needed constant bumps on the choke to idle and it would bog down while running and again using the choke I could get it to preform for a short distance then id need to pump it again. I pulled the carbs cleaned them no help. ran a seperate tank nothing, I also took apart one of the fuel pumps it looked fine. finialy I decided to de-carb(I have not ever done this to this motor.) using sea foam. It did the trick. although the seafoam may have cleaned somthing I missed besides the carbon, Its running great now.

Here is the seafoam de-carb procedure I used.

Also Yamaha wanted 53.00 each for new bowl gaskets!

http://www.switchbait.com/forums/showthread.php?t=159