My GC 2300 overheats after about 3 hrs of mowing. Obviously I shut it off, clean all of the screens, leave the hood open and let cool off before attempting to continue mowing. Sadly, it then won't start until the next morning! When I attempt to start after it overheating, the fuel pump clicks, so current is flowing, but the solenoid won't engage, no click or grunt from the motor, just nothing until the next day. The ground strap is clean, the battery measures 12v so this appears to be just plain weird. Does this machine have a thermal cutoff somewhere? If so, where is it located? I don't see one listed on the schematic that came with the tractor new. I've read the entire thread and tried all of the suggestions but other than pouring gasoline on it and tossing a match I'm clueless. Any help will be most appreciated. BTW, flushing the radiator and refilling with new coolant doesn't solve the overheating problem. SamO