Hello bUd540

I feel you are very astute in this purchase. This must be a lucky find.
The images seem to depict an extremely low mileage 33.

A Kirby Workshop Manual is here: -
https://www.outdoorking-forum.com.au/forum/u...-mechanics-handbook-c1963.html#Post96100

Related: -
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/93780/model-33-16-bonmow-c1960.html

Quote
I've read a little on motors "hunting" having an erratic surge type idol due maybe to a lean situation and if the kinked line isn't the culprit I may have to look further into it.
The manual should provide guidance here.

Please keep us informed.

Hope this helps.
---------------------------------
Jack.

P.s. Is it possible to get a close-up of the maker's plate?