Originally Posted by
cyccommute
The best way is with a
Park HCW-11 (or similar). The less better way (but still doable) is with a
pin spanner . The least best way is with screwdriver pushing on the slots. It’s not the easiest way but
will work. It’s just usually a lot of work.
A word of warning, however: If that is your bike it looks kind of new and, based on the bottom bracket, it’s on a very low end bike. Lots of those parts are made from Chinesium which is a substance that looks like steel but has the strength of wet toilet paper. Often those pull apart when you try to unscrew them and become a nightmare to extract.
If you can get it out, I wouldn’t put it back. Get a cartridge bearing bottom bracket as a replacement. They are much more robust.
OP, this is some sage advice. Reading further through the thread, even though our highly experienced colleague here has offered three possible ways, only one is right (do it right). Follow his advice further down. This is the kind of learning I need to do more of myself.