crank removal

HI,
This sounds like a silly question, but how do you remove cotterless cranks from a unicycle? I want to change them.
Cathy

It is NOT a stupid question but it has been asked many times.HERE IS ONE THREAD ON CRANK REMOVAL . You can find several more by searching.

Thank you.
There was i in my total naivity thinking I could do it with bruit force and tools from the garage.
Oh well, better go and order the proper tool and put the unicycle back together.
Cathy