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I have a '90 model with 4500 miles on it. It's sputtering and hesitating at the higher end of the power band. Any thoughts. Main jet issues?
 

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Get a brand new #114 high speed jet and maybe even a #112 if you want to experiment a little. It cured my TW's WOT high speed miss / sputtering. A brand new jet no matter how good the old one looks.
 

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could be dirty but i would check for an air leak at the carb.thats what happened on my 89.Ijust tightened the clamp and it cured it.
 

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Did this problem just start? Check the running condition (color) of your spark plug and clean your air filter.
 
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