I have a JD 325 with a 17hp Kawasaki that started blowing one of the 15 amp fuses (there are only two)located on the circuit board beside the battery. It started out that you could run it for a while than shut it off and attempt to restart it again at which time the fuse would be blown. It would only do it after the mower got warmed up. Now the fuse blows immediately when the motor is cold while cranking. Don't know if the circuit board has a short or something else. Appreciate any help.