What ever we know would have to go by factory records that may or may not exist.If it is a post 2004 engine, the instructions will be in the next post on this thread.We are going to find out the age of an engine using a five digit serial number code. That style would have been certainly used in the early days of the Lauson/Power Products swap to Tecumseh, up until at least the mid 1960's.
That would be a code with four numbers followed by a one letter suffix.If it is an early engine (and I do not know when the cutoff is) it will have a long serial number, up to 8 or 9 digits. I decided to go ahead and make it easy to follow it in hopes of being able to help some folks out.First of all, these instructions only apply to engines using a five digit serial number code. I had to answer the question again tonight and realized that I did not have the information that I do have written in a nice way. I have been asked to give the year on a Tecumseh dozens of times. I think we all have been fed the story once or twice that Tecumseh had no engine records and thus there is no way to accurately date a Tecumseh engine.
