You must disengage the ratchet on the star wheel adjuster to turn it "backwards". A small-diameter, long screwdriver works for me
cm
Agreed, but only on trucks with self adjusters. Earlier trucks (I bleive '65 was the first year for them) do not have self adjusters, and should be able to be turned back with just the adjuster spoon. As far as using a hammer, I prefer a brass headed hammer over a rubber mallet, puts more force where you need it and won't damage the drum.
