I was cutting grass on my Toro 52 inch ZT model # 74415. and all of a sudden eveything just went dead like I ran out of gas.Checked tank it was half full. tried starting back up but it did nothing. I checked the fuse and found 30amp blown(I replaced).I tried starting and still nothing. I took gaurd off top of engine and could not turn over engine by hand. I checked oil level it was full. Would the clutch cause this not to turn over? Is there a way to test the clutch?