I would say that if you have to ask the question, then there is at least part of you that makes you not the right person to be there. It's an analysis thing. The sign on the door tells you how many pounds the door is, there are instructions on either bringing the door into the cabin or putting it outside the aircraft and there are instructions on how to unlatch the door. If you analyze your known capabilities (I can lift 34lbs unassisted) vs. the listed requirements and cannot come to the conclusion that you are able, then you should move.

TBH, the analysis doesn't seem that hard. YMMV.