Hi arab , welcome aboard mate

I moved your "general tech" question into the 600F section where it will be seen a bit quicker perhaps..
Weird sounds can be hard to track reading just a post ..lolol.. by yes , quite often , prolly more often than not , it will just be the tensioner had chit it's self ...
From memory the tensioners on those are not too big a job to do ...but om sure a 600 Member will verify that for you very soon ...

please try not to duplicate questions around the boards ...it gets a bit messy ...LOLOL

have fun here , put yu pics up , and take care ...