Mike
yet to find out.
the original carb was missing , only rusted cable and slide, no decompressor or parts, the rear drum is the deeper cast sprocket one with a larger sprocket around the outside. my guess it was bump started ala speedway, bearing in mind it was a flat tracker. wouldnt be surprised if it were run on Castrol R and methanol, apart from the fact there wasnt any lacquer from R in the cases.