How do i Change the themostst in a Ford Laser KH 92 model?

To change the thermostat in a 1992 Ford Laser KH, first ensure the engine is cool. Drain the coolant from the radiator and remove the upper radiator hose. Locate the thermostat housing, unbolt it, and take out the old thermostat. Install the new thermostat with the correct orientation, reassemble the housing, and refill the coolant.