Well, not much is know about this one. For me it represents a domestic Everyman from the 1960/70s. My best guess is that it's an early to mid-1970s machine.
The Model, Type and Code on the tinware starter housing [located near carby] should give a fairly accurate date.
Could you tell us those numbers? Could we also have the serial number for provenance?
Note that this has a Briggs PulsaJet carby the model will be something like 80202 ...
I attach images from two 2018 auctions that show your model: -
