Small Engines (Lawn Mowers, etc.): leaking oil, spec number, choler

Question
My 1970 sears rider runs but I just noticed it leaking oil from the right side of the motor. it is an old choler .


Answer
You need to determine where it is coming from, like from a seal
under the flywheel, or where the pulleys mount, or if it is a
gasket, etc.  Under the carb is a tag with a model and spec number on it, give me those numbers and we can look at a blowup.