I have a 3 year old Bad Boy MZ 54 with a Briggs 27 HP motor. I have 93 hours on the mower and it's been serviced right on schedule since new. This last week since I have serviced, the main fuse is blowing after an hour of mowing. As the mower cooled I was able to replace the 25 amp fuse and finish. The battey is reading 12.5 volts and I have jumped out the 4 sensors. Something is causing an overload when in use...I hate to start throwing random parts at this problem. Has anybody had this issue ????