Given time, eventually I thought I would find a similar machine to get a part number. :-)
In this case, I found the part number for the Air Filter Cover I am looking for, which is D13010150. Using this part number, I found (in Spain and Poland) the part number relates to an engine model DG1P61F, DG1P65F and DG1P70F-A, but there is also a model DG1P70F-B. The IPL for the 1P70F-A shows under DG1P73F-A from a UK website. I was also able to get an IPL for these engines with a list of part numbers.
Air Filter is an oval sponge type with part number D15040010.
I now have the Operators Manual for the DG1P61F and DG165F and an IPL for engine 1P65F both in PDF format along with the IPL for engine DG1P61F in excel format (from Poland, but in English).
Haven't been able to find the filter (with photo to confirm item is right) online, but did locate a the cover in Spain. :-O
This information may help others.
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