I put the mower up in my metal building while I was replacing the two rear wheels. Because of problems getting the new tires to seat it took about three weeks before I was ready to run the mower again. When I started the mower it was hard to get started, but after a few minutes it started. After running about 35/40 seconds it shutdown and it turned out that the top fuse had blown. I replaced the fuse and turned on the switch. The fuse blew in about 10/15 seconds. I know this means I have a short, but don't know where to start looking because I don't know which systems are fed by that fuse. Any help would be appreciated. Thanks.