Sudden vibrations in YBR G engine!

[pwuser159543339055]

I bought new Yamaha YBR G in August 2020, the bike is going perfectly fine. Changed oil after 500km kept, RPM below or on 6000 rev/min.
After 900 kilometers in the break in period, im feeling sudden vibration in the foot rest area of the bike and the engine is making some kind of noise like something is grinding inside, this sound was not there before 900 kilometer nor the vibrations. Can anyone help me in this matter.

[amjad635]

You should visit authorize mechanic. It could be loose nuts & bolts and regarding engine noise it may be loose valves but valves noise is like tik tik like sewing machine. Loose valves also produce vibrations in engine. I hope some thing is not badly wrong specially what you are saying all of sudden grinding type noise.

where did you go for oil change? which oil did you buy?

[SER_GTR]

Get it Fixed under warranty .900km is nothing....

[hamikhan]

If there is engine is over heating then its engine oil fault

[usman_haider84]

Brother can you share that what was the issue???