·Replacing thermostat and precautions for handling
(1) Precautions for handling
The wax pallet type thermostat does not react as quickly as bellows type one to a variation of
temperature of coolant. Such relatively slow reaction is mainly due to the large heat capacity of the wax
pellet type thermostat. Therefore, to avoid a sharp rise of coolant temperature, it is essential to idle the
engine sufficiently before running it. In cold weather, do not run the engine at overload or overspeed it
immediately after starting off.
(2) When draining out or replenishing coolant, do it slowly so that air is bled sufficiently from the entire
cooling system.
(3) Replacing thermostat
If the thermostat is detected defective, replace with a new one.
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