Hi All. Looking to find information on a brand new engine, but old. I was given a 4 cycle Tecumseh engine, new in the box. I think it is over 20 years old, and has never been used. The serial number is 143.622082, model 1336E. I tried looking on Tecumseh home page, but nothing came up. I also tried on Sears parts.com again, nothing. Does anyone know where I can find information on this engine?