Outdoor Power Equipment and Small Engines - Homelite super2 automatic oiling chainsaw issues.

So i recieved this chainsaw from a relative for free...I recently
tried to get it running using new fuel, it would fire up but as soon as i give it some throttle it bogs out and dies.I noticed it seems to be leaking some fuel from a black metal piece on the side of the chainsaw that has a nut or bolt in the middle of the particular piece.When i finally did get it to fire up the final time, a buddy was watching and quickly told me to shut it down because he seen flames inside this black almost square shaped thingy where the fuel seemed to leak from.Yeah im a noob what can i say....Can anyone tell me why all this is happening and if there is an easy fix?

May be some excess fuel build up in the muffler that ignited??

Carburetor may have stiff diaphragms, may need a rebuild kit installed in the carb.