I hope that this does not add to the confusion but I have a parts book from the early 80s and the numbers are nothing like those that you have , so I’m guessing that your machine is a much later version. If it has not been re- engined the BS Model, Type And Code Numbers will give an indication of the machines date . The Code Number indicating when the engine was made.
Forgot that I already had a scan in a dropbox file !
https://www.dropbox.com/s/ea4zkfv4wfcogqm/Mountfield%20M1%20Cultivator0001.pdf?dl=0
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