salam,
@daodi
yes he is right u must go to Showroom to fix this problem if ur bike is in warranty, if it is not in, then u must again go to showroom to fix this by themselves, then if nothing happening u can try by ur self.
about Petrol, its true that Shell gives the best milage. and Caltex Techron, i don't feel there is any advantage, that is just there marketing sologan. Caltex Engine Oil is good but Patrol is useless.
i also saw new model of GS150, the only thing good is the Finishing and shining of Fuel tank etc (feel good like Honda now), otherwise nothing so good, even they have put a ordinary Silencer in it....
The good thing is Price, no doubt
but, removing accecories is not the right policy!!!!