I noticed the motor pulley/sheeve only has one step. They originally came with a four step pulley. you will only be able to change speeds buy moving motor up or down which may not be much fun or even possible.
Walker Turner does make great presses though. They pop on CL pretty often. I have seen this one listed on e-bay and it is high in price for its shape. If it were me I would keep looking for one with original motor and third pulley. They do come up for sale.
good luck
let me know if you have any other questions. I have recently cleaned up some of these great machines.