This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to fill a vape
Disassemble the vaporizer's tank.
Unscrew the airflow base located at the bottom of the vaporizer. Then, pull the coil out from inside.

Choose your answer from:
[+] The crankshell is a piece of wood that connects the vaporizer and crankcase together. Once you've detached each coil, inspect it for cracks and other problems.;
[+] Insert the hose hose into its vent. Bend it into an l shape to prevent bent parts from blowing loose.;
[+] There should be three coils at the top, which will hold the tank in place. There may also be one coil at the bottom that doubles as a pump.;
[+] Leave the tank, top connector, and mouthpiece attached for now. If you're changing flavors, clean out your tank before you refill it.;
The answer is:
Leave the tank, top connector, and mouthpiece attached for now. If you're changing flavors, clean out your tank before you refill it.