Re: Engine Number 1961 40 hp evinrude lark?
Model number and serial number should be on a plate on the transom clamp bracket. On older models the two numbers are often run together as one. However the plate is often missing.
Sometimes, but not always by any means, the number is stamped on a core plug on the powerhead but often the number stamped there is not the model/serial number either.
If the plate is still on the transom bracket you have it. If it isnt, is illegible or been painted over you probably don't have it.