monty_jon Posted May 23, 2012 Report Share Posted May 23, 2012 Can anyone tell me what the timing (fully advanced) should be on a BSA B25? I can’t remember what I used to set it too! I’ve set it to 33° but not starting very well (seems ok when running but backfires when I close the throttle) its always been a good starter Quote Link to comment Share on other sites More sharing options...
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