Cover all exposed hardware with a towel or paper
towels. Put a container under reservoirs inlet and
outlet ports.
Unscrew one of the G1/4 fitting rings on the
pump/reservoir combo.
Gently pull the tube off the fitting and direct it into the
container.
Let the water run away into the container
Keep one tube in the container and gently blow into
the other tube to additionally drain the system.
You may need to tilt the whole case in order to get all
the fluid out of the system.
The best would be to unplug the pipe from the
fitting on the radiator. Repeat
Keep the tubes over the towel to prevent water to
spill over the hardware
Dry the tubes and pump with paper towel