G'day speedy, Here's an IPL download for the Super 250, which may be of some help; http://www.smallenginediscount.com/Super_250_May_70.pdfIf you're not getting a good spark at 0.017" flywheel air gap, try 0.010" - that seems to be a common spec for Macs of that vintage.
Cheers,
Gadge
"ODK Mods can explain it to you, but they can't understand it for you..."
"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."
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