Cleaning of LULZBOT TAZ-4 nozzle

Hello Everyone!
I am new here so forgive me If I made a mistake!

I am actually trying to clean the nozzle of the TAZ-4 3D Printer and While Trying to do so, I was able to take up the cover but observe the inner portion which I was not able to take out, I would like to know if you guys have any suggestions for the nozzle cleaning. I looked into videos but found none, particularly for TAZ-4.
Thanking in advance

regards
Ketan

Seeing as im not familiar with which toolhead in particular you are using you might take a look around ohai.lulzbot.com to find the build instructions. This might give you some insight.