Look at the crank pulley; theres a big hex-shape hole in the front. The tool for holding the pulley has a big (55mm?) hex-lug that goes in there. Then there's a hole big enough for a socket for the center bolt.

But a lot of people use an impact wrench instead. A powerful impact can loosen the bolt without turning the crankshaft - that's the important thing.

The ones that I've done, once the bolt is loose, the pulley slides off the shaft easily so you don't need a puller. Same way, it slides back on without a tool.

Just don't lose that little key that fits in the grooves of the crankshaft & the pulley.