The antenna on the MPG, I believe has been changed to an omni-directional style that is always deployed, therefore requires no hand-cranking. The way to tell is to step out of your unit and look for some sort of white disk-like antenna on the roof. If you have one like that, then you have the newer style antenna.
If this is the case, then the manual needs to be revised to add the words "if so equipped with an antenna that raises....."
Jim