2. Remove the control panel.
3. Separate the cable fixed on the left side of the heating device and remove the screw on the terminal.
4. Remove the connector behind the explosion-proof motor.
5. Remove the vacuum tube and light tube behind the heating risk control device.
6. Place a container under the engine and under the heating pipe behind the cylinder head.
7. Remove the heating pipe behind the cylinder head and replace it with a new one.