I wouldn't even bother with it...
But, if you do want to test it, pull it out of the cabinet so you can inspect the rear of it before trying to start it. When we pulled the old refer out of our '72, the chimney and other plumbing lines on the rear of it were all totally packed with fiberglass insulation by the mice that had been living in the trailer over the years. That's not something you could easily see from the rear access door behind the fridge, if there even is one. You would want to make sure it was all fairly clear of debris before trying to start it to see if it works.