Is it easy to change the water tank of Magotan b7 heater?

I don't recommend you to replace what can be repaired, let alone what can be repaired, unless it is too old or can't be repaired. Generally, just remove the heater and take out the small water tank inside. Replacing the heater box requires removing the instrument panel and the heater box assembly, which is convenient for professionals to replace. Hope to adopt @