The cooling system transfers heat from the walls and cylinder head through the coolant through the radiator to the environment. Anti-corrosion coolant is used for cooling. The water pump is driven by a V-belt from the crankshaft and directs coolant through various hoses and passages. The coolant is degassed in the expansion tank. The radiator, designed to cool the liquid, under normal conditions is ventilated by the oncoming air flow, and with a large thermal load, an electric fan is additionally turned on. Fan operation is controlled by a thermal switch located on the side wall of the radiator. To quickly reach engine operating temperature after starting (about 80°C), the thermostat valve closes and stops the circulation of fluid through the radiator.