Trying to find when this mower was made model #TMO33876A A272D THANK'S

Hi,
Off the bat I would say the 1980's. If you get the numbers off the engine, and it is original; I can tell you when it was made.
There are some old manuals at:
Free lawn and garden product owners manuals, user guides & how-to instructions | ManualsOnline (http://lawnandgarden.manualsonline.com/)
Under Montgomery Ward, Lawn Mowers.
Peace,
Clarke