Hi Kye

Sorry I can't help with interpreting the engine code.
I guess the 'V' is for vertical; as this engine also appeared in
horizontal shaft configuration on reel lawnmowers in the late 1950s.
Example: https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=34395

I guess the manual is an operator's one, rather than a parts list.
Any illustrations, or is it all text?

All very interesting.
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Jack