SYM Fiddle III Bogging, Surging, Bogging Surging, Rinse, Repeat

[Pgcorky]

Just bought a 2017 Sym Fiddle III 200i with just 65 miles on the clock. Previous owner was up front about this issue - the engine starts fine, idles well - but applying power is a mixed bag. Usually from a cold start she'll accelerate okay, but quickly begins to bog down to the point where the engine feels like she might die. Then I'll get a sudden surge of power, but then it bogs down again. This continues until I shut it down - no improvement if I let it warm up a bit. I do see the "engine" light flashing at start up - 7 flashes - but can't find anything in my owners manual that talks about the codes, nor do I see how I can connect an OBD2 reader to the scoot. I'm open to suggestions!

Pgcorky