Engine noise

[adeejaysdelight]

Hello Everyone,
Just new to the forum and looking forward to getting involved.
I bought an 00' plate Fazer 600 a few months ago and I plan to take her off the road at the end of the month to serve up some overdue TLC. One of the issues I plan to address is a noise coming from the engine. I think it is the cam chain on account of the type of noise. It sounds like a metalic slap rather than a tapping.
Is there a common fault with these machines?
Any help would be appreciated and hopefully save me some time.
Cheers