immediately after the engine is started. At this time, the key will automatically return to "ON" position.
Preheat starting (only for models with preheat circuits):
Preheat starting can be used when cold starting is difficult at low temperature [-5°C (Celsius degree)
below]. Place the hand accelerator in the large throttle position, turn the starting switch clockwise to the
"Preheat" position and hold for 10~15s, and then turn to the "ST" position to start the engine; Release the hand
immediately after the engine is started. In this case, the key will rebound automatically. Then place the hand
accelerator in the small throttle position again.
For tractors without preheating circuit, before starting the engine in severe cold weather, add hot water
above 90℃ (Celsius) into the water tank, close the water drain valve at the water drain valve of the cylinder
block, and then fill the whole cooling system with hot water. Drain the engine oil in the oil sump (it is best to
drain it while it is hot during the last shutdown), put it in a container with cover and heat to (70~90)℃ (Celsius),
and then add it into the oil sump. Do not bake the oil sump with fire.
Immediately after starting the engine, reduce the throttle to idle the engine, check the engine oil pressure at
this time, and ensure that the pointer of the oil pressure gauge point is between 0.25 and 0.4. Stop the
engine and check it in the case of too high or too low oil pressure.
After the engine is started, it shall not be operated at full load immediately, but shall be heated at medium
speed and unloaded. The engine is not allowed to increase to the highest speed and put into full load
operation until the coolant temperature reaches above 60℃ (Celsius).
The speed and load of the engine shall be slowly increased or decreased, especially for the newly started
engine, it is not allowed to run at high speed by slamming the throttle.
Check the oil pressure and coolant temperature frequently while the engine is running.
Important matters: When the engine is running, the oil pressure indicator on the instrument shall not
light up; Find out the cause and troubleshoot in time otherwise.
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