Excel Hustler

Excel Hustler 440 Mower overheating. everything checks out fine. What's up?

I recently moved and bought a Hustler Excel 440 of the former owner. It was all service and everything checked fine. All fluid levels are good. And yet, after mowing for about 45 minutes, the "Hot" lights and warning (beep) sounds until I turn it off and let cool. I restart after an hour and if the process is repeated and a half. Keep in mind this model has three warning lights - ALT (alternator) HOT, and OIL. It is just the warm light that comes. Maybe even if you do not have Hustler 440, you may be familiar with this type of mower and have an idea of what might be wrong here. Thank you for any help and advice.

Is this a water-cooled engine? If yes look at the radiator system and cooling. If she could be overheated hydraulic hyd. system due to low oil cooler or a problem ul. If it is air cooled, then the system of air circulation or ventilation does not work.

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