I was not supplied the P/N, so don't know if its the AVGAS or Unleaded version
There is a serial no. on the side CI605E 4.0 151, Dan, wondering if yours have this type of marking?
Also, a close up of the black sticker signifying its HRC rather than standard.
Again, wonder if the sticker is different for different fuels. If anyone could take a close up of their's, I can compare Japanese text
If I can't work it out, maybe I'll adopt Fontyyy's neat fuel procedure of 50/50 Avgas & Unleaded
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Rich
MC21 Track Bike / RS250 NF5 'Spencer', NX5 'Cadalora' & NXA 'Aoyama' / RS500 / Two Brothers Racing RC30