Basically new toilet tank and fixtures water running in toilet all the time how do I adjust arm and ball to make this stop
Thank you

Which type do you have? If there is a brass rod with a brass ball on it you can slightly bend the arm down or adjust the screw at the pivot. A fluidmaster 400a adjusted by sliding the clip down on the rod by the float.. http://www.fluidmaster.com/html/fill_products_400a.html