How to lower the spare tire 2015 Spree 262RKS?

There is indeed a hex rod to lower the spare under the trailer/ It leads to the right side of the coach near to and just forward of the leading trailer tire, somewhat near the propane access tube. It is not in a very convenient location to work with a normal crank or wrench. I would suggest a ratchet handle and socket as a lot of cranking will be needed. Personally, I'm hoping I never need to get to it...

Thank you for the replies.  I appreciate your inputs.

I did find the crank rod beneath the side panel to the rear of the passenger side rear tire.  It is in a ridiculus place, as is the spare tire itself.  It appears whoever designed the locations never intended himself to change a tire. 

It takes a socket wrench while laying down under the side of the trailer behind the right side tires and many partial cycles with the wrench.  The tire comes down very slowly.  On top of that, the 50 lbs prox tire is hung over in the center of the trailer and is very difficult to get to.  Once the tire is down, you have to raise one side of it 6 or 8" with one arm (while you laying face down under the trailer and prone), to release the cable bracket that holds it (with the other arm).  You have to crawl just about completely under the trailer to get at it.  I'm a fairly healthy 77 year old, but I found it quite an exercise in lowering, releasing and pulling the tire out.  I did so, and re-mounted it on the back bumper for any possible future need. 

I'm just glad I went thru this exercise in my drive way and not out somewhere on a muddy shoulder. 

If KZ marketing felt it was really necessary to hide the spare, (at questionable decision), at least they could have had it hung it much nearer the side of the trailer for easier dismounting and provided a 1" hole in the lower side fairing, to get a socket/wrench thru to enable lowering the tire from the side, instead of from under the trailer. 

There is much to like about the KZ 262RKS I have, but: 
In an email, I suggested they require their design engineers go out in the field and use each of their trailer designs for a week or two.  This would likely change much of what they do in the final designs.  Things like reasonably locating AC outlets, system monitor locations, lack of shelving in tall cabinets, etc., would likely be provided and in much more convenient places.