Originally Posted by JohnBurke
It would be helpful if you will go ahead and contact the manufacturers so that they can have their errant direction removed from their publications, to avoid further future confusion.
I cannot recall any of the piston aircraft I've flown having an AFM Section 2 or Section 8 prohibition on moving the aircraft using the propeller.
EDIT:
Because I can admit when I'm wrong, I went back and looked at the AFM of the last piston I flew and in Section 8 there is a caution to not pull or push on control services or propeller while moving the airplane. I'm curious exactly how the manufacturer would have someone moving the aircraft by hand towbar impart enough force to get the aircraft rolling without placing their hand on the base of the prop (or the cowl)...but Burke is right, its there in the book.