Vintage Synth Repair

Hello, wondering if anyone has any advice on how to take apart a 
Wurlitzer 4500 organ so it can be moved. It won't fit through the door 
but needs to be moved out of the house. I guess it is doable (?) to 
partially take it apart, but I do not know that much about organs and 
need to move it after my grandmother passed away. 

I also have a picture of the organ and specs on it if this would help. 
It is *not* a theater organ, has two keyboards, pedal board, etc. 

Any advice or links to resources appreciated. 

Thanks!
Eve in Denver