I have a nice, original Scott Atwater OEM service manual available. It covers all models, 3.6 to 33 horsepower, from 1946 to 1956. Number on the manual is A52-615. It was printed by McCulloch, so it was made after the takeover. It's in pretty nice, used shape with minimal finger smudges, no tears noted, cover is nice but has some bends at the edges. Asking $130.00, shipping in the U.S. included.
Can send jpeg pics upon request.
PM or E-mail: csr112-n AT twcny DOT rr DOT com