You unbolt the pressure plate one bolt at a time and turn the flywheel until you can get at the next one. When the pressure plate is off, you should be able to remove the flywheel bolts from the rear. But as I said, you don't need to remove the flywheel to change the clutch; inspect it visually with the pressure plate off. You shouldn't need a hammer to remove the bellhousing if you decide to do so, but I believe you will find at least four bolts behind the flywheel rather than just two.