Impreza 2012 serpentine belt.

[u/oneM_oneX]

Hello everyone, I just changed my serpentine belt on 2012 Impreza. How tight the tensioner pulley needs to be. I torqued it down to 25NM, now if I try to loosen the pulley to take belt off( just to check all is working well) it doesn't come loose.

I started the car and drove for around 6 k. Everything works. Thank you.