Mmm makes me think twice about doing it myself.
In the past have just swapped old bedknife for new one. Need a impact screw driver to get the screws out and back in again. I have always left the sole plate in the mower frame when I have done it.
Then usually clamp the assembled bed knife and sole plate to the table on my milling machine and skim it to ensure the bedknife is flat in relation to the sole plate.
