My accordion!

I received an accordion from my dad not too long ago, it is a very old model that he received from one of his patients (he's a neurologist) who was a polka player. I've been teaching myself by ear and can play a few songs already using the keyboard side. The other side has 120 bass buttons that confuzzle me. Since the accordion is older is takes a lot more pumping when I'm trying to learn songs by ear so I was wondering if there was a way to attach a vacuum pump or something to make it work without the pumping motion while I'm trying to figure out notes. The accordion has various holes on it that I believe let air in and out.

Picture of My accordion!
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