i have a problem with my yamaha aerox 50?

[pascoe]

hi i've got a yamaha Aerox 50, had it for 3-4months and its been fine, love it! recently it has been dying back and jolting from start and when at a high speed. i have cleaned the spark plug. I've still got guarantee on it so would be help full for a yamaha dealer or some friendly advise as i don't want to lose the guarantee trying to sort it myself. thank you

 

[Timbo is here]

If you have a guarantee then let the ones guaranteeing it sort it for you - that is what the guarantee is for!