The jack base actually sits up side down on top of the spare tire rim center hole. There is a threaded rod that comes through the rim and jack base and tightened up with a big wing nut. The jack base shown on the pic is just laying there and not in the right place.
You will likely need a longer spring than a snowmobile exhaust spring. A longer spring need to be loose enough to get it on and then you use the jacking lift function to tighten it.
