There should be a crank handle that inserts into a hole and connects to a keyway / gear unit to raise and lower the tire. I had mine installed, under warranty, as the dealer, Richardson's RV, told me that SPARES were no longer standard equipment. #@&*@@# those guys. The shop installed ours up front, most seem to be mounted in the rear. I prefer the front so if it drops you can feel it when you drive over it!
All kidding aside get to know your spare and the procedure for changing out a flat. We have had two with the Trail America brand, the first was I-5 @ Lodi, easy to call AAA. The second one was in Death Valley, AAA was no where to be found......