Ok so this bloke turned up today and he wants me to fit a new pump to his Honda. I don't understand why all these replacement pumps take a 1 inch shaft and the Honda shaft is 25mm. I am going to have to set this pump up carefully so I can drill and tap the mounting bolts. The shaft being 25mm leaves me with a bit of slop of .4mm. Looks like I have to get some .2mm shim brass
