The answer to 'generator gets hot' is that a generator getting hot can be caused by a few common issues. Overloading the generator, a malfunctioning cooling system, or a problem with the alternator or engine can all lead to the generator overheating. Symptoms may include the generator housing feeling very hot to the touch, the engine running rough, or the generator shutting down due to high temperature. Solutions can include reducing the electrical load, checking and replacing the cooling system, or servicing the alternator or engine components.
If the generator is getting dangerously hot or you're unsure of the cause, it's best to have a professional electrical technician inspect and diagnose the issue. Attempting to service the generator yourself without proper training and equipment can be unsafe. A qualified technician will be able to properly identify and fix the problem to get your generator running safely and efficiently again.