Sniper HC Engine Problem

Sirs, I had a problem with my 1 week old Yamaha Sniper HC. It has an unusual engine noise when it is idling. the sound is similar to marbles knocking the wall of my crankcase. Is it natural for a new sniper to have this sound? The noise is more pronounced when my bike is idling. I am doubtful that the distributor gave the unit to me with defects. I just want to gather info regarding my problem. I'll bring it the dealer this monday to be checked. I just want to have your opinions. Thank you.



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