Hi.
I have Micro-fiches that cover parts and specs for this saw. Built from 1948 to 1949, Mac's first chainsaw, 7.9 CI , 49# and 2.250" bore x 2.000 stroke. I have one to be rebuilt, but can't seem to get to it. Too many other saws that interest me more right now.
Too many saws, too little time. Larry
thanks for the info. but i do hear you about the time thing. i am currently rebuilding the one that i have. i had to rework the crank a little bit cause of rust pitting. but i should have the crank done tomorrow.