Are you having problems with overheating? Because just removing a thermostat won't always make the engine run cooler. There is nothing wrong with a hot running engine as long as its within normal range, its designed to run that way. It important for proper warm up to insure the oil can circulate to bring the engine up to proper temp. A cooler running engine will also use more gas and could cause damage to the engine because the oil isn't circulating properly. If it is over heating, make sure your cooling fan is working, and the radiator is clear of bugs and leaves, then flush the system, and replace the thermostat.
I know some engines don't have thermoststs anymore, I'm not sure about yours.