Thanks for using JA
Using your thumb a your pointer finger hold the edge of the belt and turn it up should slightly flex up, then using just the pointer finger push down in the middle of the belt it should also slightly move. too much movement is no good no movement is also no good.
in the case of loose and over tight belt belt squealing may occur, also over tight belt will leave lots of black residue due to faster wear.
thanks for the reply.
twist would be right.
no two separate actions. twist up let go then push down in the center.
you should feel a bit of flex and resistance. if the belt doesn't twist or flex down a bit then it's too tight.