12. COOLING SYSTEM K-XCT 125i INSPECTION Suspend the thermostat in a pan of water over a burner and gradually raise the water temperature to check its operation. Thermostat Technical Data Thermometer Begins to open 71 1.5°C Full-open 80°C Valve lift 3.5 mm (0.14 in) minimum Do not let the thermostat touch the pan as it will give a false reading. Replace the thermostat if the valve stays open at room temperature. Test the thermostat after it is opened for about 5 minutes and holds the temperature at 70. ASSEMBLY Thermostat assembly is in the reverse order of disassembly. Thermostat Housing 12-20