You can get circlip pliers that work with the the type of circlips with the 2 small holes in them
i just use a small screwdriver, its "fiddly" and easy for the circlip to ping into oblivion or fall down the back of the engine never to be seen again, so if you can figure out a way of catching it/ holding on to it (long nose pliers/ a plastic bag under it )
Some of these jobs need the skill/ seady hands of a surgeon (which a lot of good mechanics seem to have)














