Thank you for mentioning the Spacer, I found it on the ground. (on the left , photo 1). I would still be scratching my head .
The tensioner (photo 2) would be that long screw. So I think technically I wasnt supposed to actually remove the pulley, I would just need to untighten its screw then turn the tensioner screw that will move the whole pulley up and down as needed.
It sounds too good to work though.
So now the job is done, no more burning rubber smell. There was a funny squealing that would increase volume as I increase the RPM. So I simply untightened the belt a little bit , using the tensioner!
Bye until next time!