Euro-pro sewing machine manual for model 150

Question

my dad bought me a second hand euro-pro model 150. no instructions came with it and it has been a long time for me. I am not able to remove the bobin case from the inside of the sewing machine. It seems to be held in by a couple of small screws. I am worried if I remove these screws I will dismantle something I do not know how to put back together. Not sure I even need to but?? My objective was to just to figure out how the machine works, but I am already stumped. Will you please help me?