Here are the numbers from the cowling. I found them eventually
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2016/06/full-9912-28671-img_20160601_143045.jpg)
obviously this engine was built 20 March 1981 (my birthday is 20 March 1984).
After some thought and an offer of a recently rebuilt 3hp briggs motor for free (more the later

) I've decided to put a whole new engine on there. Here it is now. Sorry about the quality of the photo, the sun was too bright so I had to shut the shged door and my phone doesn't take brillian low light photos.