Giday , tecumseh prisma 40 / pri 156. E-37254L. This is all I could find ond the mower case so I don't know if it is the model number or not . [Linked Image]
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I spent a day in cleaning it up and give a little run with 600 ml oil in the sump but it shows on the dip stick that it can take more not much though . What id like to know is how much oil it should take , what hp and where can I get a air filter (foam I guess) from .first time on a tecumseh 4 stroke which seems a good little motor and runs quite smooth. [Linked Image]
And year of manufacture would be great.