With instructions showing pulleys not installed, but yours are, it's sounding like like there's a possibility that you got a demo or floor model. Could also be that you just got a unit that was partially assembled for owner's or user's manual pics.
If a puller is required, I'm sure you can fabricate it in your shop. If owner's manual shows pulleys off, shouldn't be an issue to install them.
Throat dimension?
Like Rick, would love to see a pic or two.