It unthawed in the garage overnight and ran as well as a 5HP engine can that was never rebuilt, and probably can't be now, due to federal regulations.
Heh, that reminds us of our neighbor’s lawn mower. He had just moved in and bought a old mower at a garage sale for a few bucks. It popped, backfired, smoked but it ran after a fashion, and ran that way for the 12 years he lived there and he took it with him to his new home.