Hi Max,
One thing I forgot with the 13hp motors is they don't come with a fuel tank so I'm guessing I would have to fit a tank from a Victa 24 or something like that and then I have to make up a battery box and battery leads. It keeps going on. And now I am struggling to get the grub screw out off the pulley on the old motor. Have you ever tried drilling one out?I might try heating it with the oxy today, hopefully that will free it up.