From this info, you can not get a date of manufacture. You need to post the DOM number which is found in the same area as the model & serial number.Trying to find out how old this tecumseh 3hp model # H30-35311M
serial # 0085B
Comes off a craftsman edger/trimmer Model #536.870542
Nice. When I worked for a Central, we had a distributor go out of bus. in Nyack, NY in the mid-90's. He still had brand-new Clinton engines in the box. Never know what you'll find out there!Found one last week , New in the box .