i was told 35mm & 40mm would work. 2015 570 sportsman which they did but i had to remove the axle. wouldn't think I should have to remove axle. Or was I told wrong size?

Hello, I'm a newbie to the forum so please forgive my general lack of knowledge about the polaris machines. I've searched here and online in general and can't find anything on my year of machine...a few posts for newer ones but the info I have seen there doesn't seem to jive with what i've got...

Does anyone know the thread size and size of bolt required to remove the clutch on this little 50. Im not sure if its the same as the bigger ones or not. Also i have heard this can be accomplished by the correct size bolt, putting the quad on its side and filling the hole with hydraulic fluid...