1. When the engine is running, it is forbidden to open the top cover of the heat
exchanger. There is a high pressure in the high-temperature heat exchanger, and the
overflow of the high-temperature liquid will cause injuries to people.
2. You must wait for the temperature of the heat exchanger to drop to the point where it
is not harmful to humans.
3. The engine coolant level is shown in the above figure. When the coolant level is too
high, the coolant is easily to overflow at engine high temperature. When coolant level
is too low, the engine will be easily damaged during running.