Look at the inside (V groove) of the engine/deck drive pulley and make sure there's no film of rubber from the old belt present on the faces, This will cause the new belt to grab. If you find nothing post the model and serial numbers.....
Originally Posted by piston slapper
You never learn anything until you admit you don't know it all...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!