As BB said, I believe the earlier blue45 Lawn kings had the 2 h.p. decal ...
However, The B&S 6 series engine did appear as a 2hp or 2.5 hp - as Deejay said. My records show the later green 45 Lawn Kings (and Craftsman) machines had the 2.5 decal.
All very interesting. ------------------------------- JACK