Arcade Game/PCB Collecting: A Thread for Gamers With More Money Than Sense

Can anyone read Japanese? Or is pretty knowledgeable about electronics?

I’m trying to get a replacement knob/pot for the power supply on this Super Neo 29. It’s #6 in the manual below. I’m guessing it adjusts the 5V, but I don’t know what type of replacement potentiometer to get. This one used to allow for a philips head to adjust it, but the spinning portion fell out.