See this piece? It's the piece in the bottom, just unscrew that, replace with a new one, put a few drops of juice in it (priming it) then replace the base. Let it sit a couple minutes for the juice to soak up, then vape.
Sometimes they are REALLY difficult to take disassemble.
The part you are looking for starts @ 9:00 to 10:40
0:00 - Intro 1:47 - Unboxing and Overview 11:47 - Looks on Mods 13:04 - Comparison with other Atomizers 13:42 - Charts, Graphs and Tests 14:56 - Final Thoughts
Yup Tobeco's are know for the bases being difficult to remove you may have to use the provided allen wrench
slide it through the airflow slot to loosen the base