cub cadet lt1045 keeps blowing the ignition fuse 20amp need help?

cub cadet lt1045 blows the fuse that gives power to the mower from the ingnition switch i need to know if this is a constant problem with the cub wiring and if there has been any service bullitens on this and if there is any wiring diagrams so this can be fixed? model#LT1045 13AX11CH710 year 1/2006