Hello all.
Can't see the cylinder numbers/letters yet as I need to throw a 100 psi around the cylinder base and blow all the sawdust out but, I can see "made in Italy" on one side of the cylinder bolting flange, and the 4 square corners of the bolting flange have half radii corners machined on half the thickness of the bolting flange.
Would it be a Gilardoni cylinder, it has a "B" stamped near the spark plug, hope that it is not a Meteor. Chainsaw model is a 1997 42 special s/n 7350580
Thanks all
Phil