Hey, I am a begginer with bikes and i bought a 07 CBR 125. It has driven about 40000km. Since i bought it there were many problems with it. About 2 months ago it just stopped starting. I had to change the piston rod as well as the whole piston. I got it back from mechanic like 1 week ago and when he gave it to me it was working fine. I rode it home and everything worked just fine. But when I tried to start it one day later, it was doing the same thing as before - just making starting sounds but won´t start. I asked my mechanic what it might be, but he told me he doesn´t really know - he said there might be problem with the fuel pump.
What do you think? Did anyone experience something simillar?
Thanks for your ideas and sorry for my bad english.

 

Being new to bikes, check the basics. Is it in neutral? Is the kill switch turned on? Is there fuel in it? Much beyond that will require some mechanical ability and much more information. If you are not comfortable with getting that involved, then you might consider bringing back to the mechanic to help you.