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before you go swapping the wheels you need to check the diameter of the wheel and tooth form is identical. I am not sure without seeing pictures of the parts but sometimes you can just drive the arbor though the wheel using a split stake and a punch resting on the shoulder of the arbor, make sure the hole in the punch is deep enough to clear the pivot. The only issue with is is when you come to fit it on the arbor you will be using the fit of the wheel may not be tight enough. Hopefully someone with a bit of experience here might help?