eagle8 Posted June 29, 2018 Report Share Posted June 29, 2018 I remember when i got my Bultaco, bought new plug gaped it to specks didn't even look like starting, went around to see a mate who raced go carts with Bulty motors in them. He said half the plug gap because the electrics don't throw a strong spark, started 2 kick Quote Link to comment Share on other sites More sharing options...
stevem75 Posted June 29, 2018 Report Share Posted June 29, 2018 We don’t know exactly what model your bike is. You haven’t told us what the numbers are. You mentioned on the motor you see M and the frame you see B. What are the numbers after the letters ? Those numbers are a reference to what model it is. A M85 is an alpina 250. An M99 is a 350. So let’s say it is an M8500123. That would mean it is a 250cc alpina and that it was the 123’rd alpina built. Roughly that bike was produced from 71-73 but there’s no way of knowing. So write down your number and check the model reference list that was mentioned a few posts back. As mentioned the number will correlate to a model, a displacement , and rough year of manufacture. But without either checking it or posting here we can’t tell you for sure what it is steve 1 Quote Link to comment Share on other sites More sharing options...
Art Posted July 1, 2018 Author Report Share Posted July 1, 2018 Sorry the number is M-8502239 Quote Link to comment Share on other sites More sharing options...
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