I need some mechanical help

I need to know what size socket I would need to manually crank my 88 b22. I don't have the socket but need to know what size to buy.

Im taking a stab in the dark here but i think i used an 11/16". Somebody can confirm

Oh and dont be mad if im waaay off lol

It's metric. 21mm if I recall correctly.

It was a 21mm. Unfortunately the motor is ceased. Thanks for the help guys

No prob. Yup that sounds right