washer stopped spinning

I noticed the belt was off, first, then pulled it back on. Washer worked, but very noisily, as belt continued slippage. I bought new belt after reading how to repair, then when it arrived, I read how someone installed it without having to remove bolt, etc. I tried and succeeded. It agitates just fine, but stalls when spinning. It's like the belt is too tight, now. i am gonna try rotating the rotating parts to see if that will help loosen it.