How to remove crank arm?

Question

i am trying to remove a crank arm from my mongoose xr 250 but i need to know how many mm is it so i can buy the correct crank arm puller does anyone know or know the most common one

Answer 1

ya the mm does not matter for crank pullers.

all you need to know is whether you crank is splined or square taper.

yours just so happens to be a square taper so the puller you are looking for is the one with the smaller head.